aboutsummaryrefslogtreecommitdiffstats
path: root/lib/compiler/src
diff options
context:
space:
mode:
Diffstat (limited to 'lib/compiler/src')
-rw-r--r--lib/compiler/src/Makefile30
-rw-r--r--lib/compiler/src/beam_a.erl34
-rw-r--r--lib/compiler/src/beam_asm.erl88
-rw-r--r--lib/compiler/src/beam_block.erl570
-rw-r--r--lib/compiler/src/beam_bool.erl183
-rw-r--r--lib/compiler/src/beam_bs.erl278
-rw-r--r--lib/compiler/src/beam_bsm.erl49
-rw-r--r--lib/compiler/src/beam_clean.erl60
-rw-r--r--lib/compiler/src/beam_dead.erl819
-rw-r--r--lib/compiler/src/beam_dict.erl120
-rw-r--r--lib/compiler/src/beam_disasm.erl79
-rw-r--r--lib/compiler/src/beam_disasm.hrl29
-rw-r--r--lib/compiler/src/beam_except.erl33
-rw-r--r--lib/compiler/src/beam_flatten.erl25
-rw-r--r--lib/compiler/src/beam_jump.erl202
-rw-r--r--lib/compiler/src/beam_listing.erl36
-rw-r--r--lib/compiler/src/beam_peep.erl83
-rw-r--r--lib/compiler/src/beam_receive.erl24
-rw-r--r--lib/compiler/src/beam_reorder.erl148
-rw-r--r--lib/compiler/src/beam_split.erl34
-rw-r--r--lib/compiler/src/beam_trim.erl29
-rw-r--r--lib/compiler/src/beam_type.erl325
-rw-r--r--lib/compiler/src/beam_utils.erl220
-rw-r--r--lib/compiler/src/beam_validator.erl770
-rw-r--r--lib/compiler/src/beam_z.erl48
-rw-r--r--lib/compiler/src/cerl.erl284
-rw-r--r--lib/compiler/src/cerl_clauses.erl44
-rw-r--r--lib/compiler/src/cerl_inline.erl182
-rw-r--r--lib/compiler/src/cerl_sets.erl207
-rw-r--r--lib/compiler/src/cerl_trees.erl288
-rw-r--r--lib/compiler/src/compile.erl374
-rw-r--r--lib/compiler/src/compiler.app.src29
-rw-r--r--lib/compiler/src/compiler.appup.src23
-rw-r--r--lib/compiler/src/core_lib.erl98
-rw-r--r--lib/compiler/src/core_lint.erl149
-rw-r--r--lib/compiler/src/core_parse.hrl35
-rw-r--r--lib/compiler/src/core_parse.yrl177
-rw-r--r--lib/compiler/src/core_pp.erl206
-rw-r--r--lib/compiler/src/core_scan.erl32
-rw-r--r--lib/compiler/src/erl_bifs.erl23
-rwxr-xr-x[-rw-r--r--]lib/compiler/src/genop.tab275
-rw-r--r--lib/compiler/src/rec_env.erl208
-rw-r--r--lib/compiler/src/sys_core_dsetel.erl69
-rw-r--r--lib/compiler/src/sys_core_fold.erl2539
-rw-r--r--lib/compiler/src/sys_core_fold_lists.erl387
-rw-r--r--lib/compiler/src/sys_core_inline.erl29
-rw-r--r--lib/compiler/src/sys_pre_attributes.erl23
-rw-r--r--lib/compiler/src/sys_pre_expand.erl290
-rw-r--r--lib/compiler/src/v3_codegen.erl434
-rw-r--r--lib/compiler/src/v3_core.erl1554
-rw-r--r--lib/compiler/src/v3_kernel.erl282
-rw-r--r--lib/compiler/src/v3_kernel.hrl25
-rw-r--r--lib/compiler/src/v3_kernel_pp.erl45
-rw-r--r--lib/compiler/src/v3_life.erl204
-rw-r--r--lib/compiler/src/v3_life.hrl23
55 files changed, 8205 insertions, 4649 deletions
diff --git a/lib/compiler/src/Makefile b/lib/compiler/src/Makefile
index c6d09d85eb..518c89d044 100644
--- a/lib/compiler/src/Makefile
+++ b/lib/compiler/src/Makefile
@@ -1,18 +1,19 @@
#
# %CopyrightBegin%
#
-# Copyright Ericsson AB 1996-2013. All Rights Reserved.
+# Copyright Ericsson AB 1996-2016. All Rights Reserved.
#
-# The contents of this file are subject to the Erlang Public License,
-# Version 1.1, (the "License"); you may not use this file except in
-# compliance with the License. You should have received a copy of the
-# Erlang Public License along with this software. If not, it can be
-# retrieved online at http://www.erlang.org/.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
#
-# Software distributed under the License is distributed on an "AS IS"
-# basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-# the License for the specific language governing rights and limitations
-# under the License.
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
#
# %CopyrightEnd%
#
@@ -49,6 +50,7 @@ MODULES = \
beam_asm \
beam_block \
beam_bool \
+ beam_bs \
beam_bsm \
beam_clean \
beam_dead \
@@ -61,6 +63,7 @@ MODULES = \
beam_opcodes \
beam_peep \
beam_receive \
+ beam_reorder \
beam_split \
beam_trim \
beam_type \
@@ -70,6 +73,7 @@ MODULES = \
cerl \
cerl_clauses \
cerl_inline \
+ cerl_sets \
cerl_trees \
compile \
core_lib \
@@ -81,6 +85,7 @@ MODULES = \
rec_env \
sys_core_dsetel \
sys_core_fold \
+ sys_core_fold_lists \
sys_core_inline \
sys_pre_attributes \
sys_pre_expand \
@@ -158,6 +163,10 @@ $(EBIN)/beam_asm.beam: $(ESRC)/beam_asm.erl $(EGEN)/beam_opcodes.hrl
$(EBIN)/cerl_inline.beam: $(ESRC)/cerl_inline.erl
$(V_ERLC) $(ERL_COMPILE_FLAGS) +nowarn_shadow_vars -o$(EBIN) $<
+# Inlining core_parse is slow and has no benefit.
+$(EBIN)/core_parse.beam: $(EGEN)/core_parse.erl
+ $(V_ERLC) $(subst +inline,,$(ERL_COMPILE_FLAGS)) -o$(EBIN) $<
+
# ----------------------------------------------------
# Release Target
# ----------------------------------------------------
@@ -187,6 +196,7 @@ $(EBIN)/core_parse.beam: core_parse.hrl $(EGEN)/core_parse.erl
$(EBIN)/core_pp.beam: core_parse.hrl
$(EBIN)/sys_core_dsetel.beam: core_parse.hrl
$(EBIN)/sys_core_fold.beam: core_parse.hrl
+$(EBIN)/sys_core_fold_lists.beam: core_parse.hrl
$(EBIN)/sys_core_inline.beam: core_parse.hrl
$(EBIN)/sys_pre_expand.beam: ../../stdlib/include/erl_bits.hrl
$(EBIN)/v3_codegen.beam: v3_life.hrl
diff --git a/lib/compiler/src/beam_a.erl b/lib/compiler/src/beam_a.erl
index c590c5e35b..91e6d80da3 100644
--- a/lib/compiler/src/beam_a.erl
+++ b/lib/compiler/src/beam_a.erl
@@ -1,18 +1,19 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2012-2013. All Rights Reserved.
+%% Copyright Ericsson AB 2012-2016. All Rights Reserved.
%%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
%%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
%%
%% %CopyrightEnd%
%%
@@ -54,6 +55,9 @@ rename_instrs([{call_only,A,F}|Is]) ->
[{call,A,F},return|rename_instrs(Is)];
rename_instrs([{call_ext_only,A,F}|Is]) ->
[{call_ext,A,F},return|rename_instrs(Is)];
+rename_instrs([{'%live',_}|Is]) ->
+ %% When compiling from old .S files.
+ rename_instrs(Is);
rename_instrs([I|Is]) ->
[rename_instr(I)|rename_instrs(Is)];
rename_instrs([]) -> [].
@@ -88,6 +92,16 @@ rename_instr({bs_private_append=I,F,Sz,U,Src,Flags,Dst}) ->
{bs_init,F,{I,U,Flags},none,[Sz,Src],Dst};
rename_instr(bs_init_writable=I) ->
{bs_init,{f,0},I,1,[{x,0}],{x,0}};
+rename_instr({test,Op,F,[Ctx,Bits,{string,Str}]}) ->
+ %% When compiling from a .S file.
+ <<Bs:Bits/bits,_/bits>> = list_to_binary(Str),
+ {test,Op,F,[Ctx,Bs]};
+rename_instr({put_map_assoc,Fail,S,D,R,L}) ->
+ {put_map,Fail,assoc,S,D,R,L};
+rename_instr({put_map_exact,Fail,S,D,R,L}) ->
+ {put_map,Fail,exact,S,D,R,L};
+rename_instr({test,has_map_fields,Fail,Src,{list,List}}) ->
+ {test,has_map_fields,Fail,[Src|List]};
rename_instr({select_val=I,Reg,Fail,{list,List}}) ->
{select,I,Reg,Fail,List};
rename_instr({select_tuple_arity=I,Reg,Fail,{list,List}}) ->
diff --git a/lib/compiler/src/beam_asm.erl b/lib/compiler/src/beam_asm.erl
index 112b087f3c..f6ca7a0afb 100644
--- a/lib/compiler/src/beam_asm.erl
+++ b/lib/compiler/src/beam_asm.erl
@@ -1,18 +1,19 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1996-2013. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2016. All Rights Reserved.
%%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
%%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
%%
%% %CopyrightEnd%
%%
@@ -29,11 +30,12 @@
module(Code, Abst, SourceFile, Opts) ->
{ok,assemble(Code, Abst, SourceFile, Opts)}.
-assemble({Mod,Exp,Attr0,Asm0,NumLabels}, Abst, SourceFile, Opts) ->
+assemble({Mod,Exp0,Attr0,Asm0,NumLabels}, Abst, SourceFile, Opts) ->
{1,Dict0} = beam_dict:atom(Mod, beam_dict:new()),
{0,Dict1} = beam_dict:fname(atom_to_list(Mod) ++ ".erl", Dict0),
NumFuncs = length(Asm0),
{Asm,Attr} = on_load(Asm0, Attr0),
+ Exp = cerl_sets:from_list(Exp0),
{Code,Dict2} = assemble_1(Asm, Exp, Dict1, []),
build_file(Code, Attr, Dict2, NumLabels, NumFuncs, Abst, SourceFile, Opts).
@@ -60,7 +62,7 @@ insert_on_load_instruction(Is0, Entry) ->
Bef ++ [El,on_load|Is].
assemble_1([{function,Name,Arity,Entry,Asm}|T], Exp, Dict0, Acc) ->
- Dict1 = case member({Name,Arity}, Exp) of
+ Dict1 = case cerl_sets:is_element({Name,Arity}, Exp) of
true ->
beam_dict:export(Name, Arity, Entry, Dict0);
false ->
@@ -132,10 +134,10 @@ build_file(Code, Attr, Dict, NumLabels, NumFuncs, Abst, SourceFile, Opts) ->
LiteralChunk = case beam_dict:literal_table(Dict) of
{0,[]} -> [];
{NumLiterals,LitTab0} ->
- LitTab1 = iolist_to_binary(LitTab0),
- LitTab2 = <<NumLiterals:32,LitTab1/binary>>,
- LitTab = iolist_to_binary(zlib:compress(LitTab2)),
- chunk(<<"LitT">>, <<(byte_size(LitTab2)):32>>, LitTab)
+ LitTab1 = [<<NumLiterals:32>>,LitTab0],
+ LitTab = zlib:compress(LitTab1),
+ chunk(<<"LitT">>, <<(iolist_size(LitTab1)):32>>,
+ LitTab)
end,
%% Create the line chunk.
@@ -223,10 +225,12 @@ flatten_imports(Imps) ->
list_to_binary(map(fun({M,F,A}) -> <<M:32,F:32,A:32>> end, Imps)).
build_attributes(Opts, SourceFile, Attr, MD5) ->
+ Misc0 = case SourceFile of
+ [] -> [];
+ [_|_] -> [{source,SourceFile}]
+ end,
Misc = case member(slim, Opts) of
- false ->
- {{Y,Mo,D},{H,Mi,S}} = erlang:universaltime(),
- [{time,{Y,Mo,D,H,Mi,S}},{source,SourceFile}];
+ false -> Misc0;
true -> []
end,
Compile = [{options,Opts},{version,?COMPILER_VSN}|Misc],
@@ -324,6 +328,8 @@ make_op({gc_bif,Bif,Fail,Live,Args,Dest}, Dict) ->
encode_op(BifOp, [Fail,Live,{extfunc,erlang,Bif,Arity}|Args++[Dest]],Dict);
make_op({bs_add=Op,Fail,[Src1,Src2,Unit],Dest}, Dict) ->
encode_op(Op, [Fail,Src1,Src2,Unit,Dest], Dict);
+make_op({test,Cond,Fail,Src,{list,_}=Ops}, Dict) ->
+ encode_op(Cond, [Fail,Src,Ops], Dict);
make_op({test,Cond,Fail,Ops}, Dict) when is_list(Ops) ->
encode_op(Cond, [Fail|Ops], Dict);
make_op({test,Cond,Fail,Live,[Op|Ops],Dst}, Dict) when is_list(Ops) ->
@@ -429,45 +435,35 @@ encode_alloc_list_1([], Dict, Acc) ->
{iolist_to_binary(Acc),Dict}.
encode(Tag, N) when N < 0 ->
- encode1(Tag, negative_to_bytes(N, []));
+ encode1(Tag, negative_to_bytes(N));
encode(Tag, N) when N < 16 ->
(N bsl 4) bor Tag;
encode(Tag, N) when N < 16#800 ->
[((N bsr 3) band 2#11100000) bor Tag bor 2#00001000, N band 16#ff];
encode(Tag, N) ->
- encode1(Tag, to_bytes(N, [])).
+ encode1(Tag, to_bytes(N)).
encode1(Tag, Bytes) ->
- case length(Bytes) of
+ case iolist_size(Bytes) of
Num when 2 =< Num, Num =< 8 ->
[((Num-2) bsl 5) bor 2#00011000 bor Tag| Bytes];
Num when 8 < Num ->
[2#11111000 bor Tag, encode(?tag_u, Num-9)| Bytes]
end.
-
-to_bytes(N0, Acc) ->
- Bits = 3*128,
- case N0 bsr Bits of
- 0 ->
- to_bytes_1(N0, Acc);
- N ->
- to_bytes(N, binary_to_list(<<N0:Bits>>) ++ Acc)
- end.
-
-to_bytes_1(0, [B|_]=Done) when B < 128 -> Done;
-to_bytes_1(N, Acc) -> to_bytes(N bsr 8, [N band 16#ff|Acc]).
-
-negative_to_bytes(N0, Acc) ->
- Bits = 3*128,
- case N0 bsr Bits of
- -1 ->
- negative_to_bytes_1(N0, Acc);
- N ->
- negative_to_bytes_1(N, binary_to_list(<<N0:Bits>>) ++ Acc)
+to_bytes(N) ->
+ Bin = binary:encode_unsigned(N),
+ case Bin of
+ <<0:1,_/bits>> -> Bin;
+ <<1:1,_/bits>> -> [0,Bin]
end.
-negative_to_bytes_1(-1, [B1,_B2|_]=Done) when B1 > 127 ->
- Done;
-negative_to_bytes_1(N, Acc) ->
- negative_to_bytes_1(N bsr 8, [N band 16#ff|Acc]).
+negative_to_bytes(N) when N >= -16#8000 ->
+ <<N:16>>;
+negative_to_bytes(N) ->
+ Bytes = byte_size(binary:encode_unsigned(-N)),
+ Bin = <<N:Bytes/unit:8>>,
+ case Bin of
+ <<0:1,_/bits>> -> [16#ff,Bin];
+ <<1:1,_/bits>> -> Bin
+ end.
diff --git a/lib/compiler/src/beam_block.erl b/lib/compiler/src/beam_block.erl
index cf5244e1ce..85d332c56e 100644
--- a/lib/compiler/src/beam_block.erl
+++ b/lib/compiler/src/beam_block.erl
@@ -1,18 +1,19 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1999-2013. All Rights Reserved.
+%% Copyright Ericsson AB 1999-2016. All Rights Reserved.
%%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
%%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
%%
%% %CopyrightEnd%
%%
@@ -22,14 +23,13 @@
-module(beam_block).
-export([module/2]).
--import(lists, [mapfoldl/3,reverse/1,reverse/2,foldl/3,member/2]).
--define(MAXREG, 1024).
+-import(lists, [reverse/1,reverse/2,foldl/3,member/2]).
-module({Mod,Exp,Attr,Fs0,Lc0}, _Opt) ->
- {Fs,Lc} = mapfoldl(fun function/2, Lc0, Fs0),
+module({Mod,Exp,Attr,Fs0,Lc}, _Opt) ->
+ Fs = [function(F) || F <- Fs0],
{ok,{Mod,Exp,Attr,Fs,Lc}}.
-function({function,Name,Arity,CLabel,Is0}, Lc0) ->
+function({function,Name,Arity,CLabel,Is0}) ->
try
%% Collect basic blocks and optimize them.
Is1 = blockify(Is0),
@@ -39,11 +39,8 @@ function({function,Name,Arity,CLabel,Is0}, Lc0) ->
Is5 = opt_blocks(Is4),
Is6 = beam_utils:delete_live_annos(Is5),
- %% Optimize bit syntax.
- {Is,Lc} = bsm_opt(Is6, Lc0),
-
%% Done.
- {{function,Name,Arity,CLabel,Is},Lc}
+ {function,Name,Arity,CLabel,Is6}
catch
Class:Error ->
Stack = erlang:get_stacktrace(),
@@ -61,77 +58,45 @@ blockify(Is) ->
blockify([{loop_rec,{f,Fail},{x,0}},{loop_rec_end,_Lbl},{label,Fail}|Is], Acc) ->
%% Useless instruction sequence.
blockify(Is, Acc);
-
-%% New bit syntax matching.
-blockify([{bs_save2,R,Point}=I,{bs_restore2,R,Point}|Is], Acc) ->
- blockify([I|Is], Acc);
-blockify([{bs_save2,R,Point}=I,{test,is_eq_exact,_,_}=Test,
- {bs_restore2,R,Point}|Is], Acc) ->
- blockify([I,Test|Is], Acc);
-
-%% Do other peep-hole optimizations.
-blockify([{test,is_atom,{f,Fail},[Reg]}=I|
- [{select,select_val,Reg,{f,Fail},
- [{atom,false},{f,_}=BrFalse,
- {atom,true}=AtomTrue,{f,_}=BrTrue]}|Is]=Is0],
- [{block,Bl}|_]=Acc) ->
- case is_last_bool(Bl, Reg) of
- false ->
- blockify(Is0, [I|Acc]);
- true ->
- %% The last instruction is a boolean operator/guard BIF that can't fail.
- %% We can convert the three-way branch to a two-way branch (eliminating
- %% the reference to the failure label).
- blockify(Is, [{jump,BrTrue},
- {test,is_eq_exact,BrFalse,[Reg,AtomTrue]}|Acc])
- end;
-blockify([{test,is_atom,{f,Fail},[Reg]}=I|
- [{select,select_val,Reg,{f,Fail},
- [{atom,true}=AtomTrue,{f,_}=BrTrue,
- {atom,false},{f,_}=BrFalse]}|Is]=Is0],
- [{block,Bl}|_]=Acc) ->
- case is_last_bool(Bl, Reg) of
- false ->
- blockify(Is0, [I|Acc]);
- true ->
- blockify(Is, [{jump,BrTrue},
- {test,is_eq_exact,BrFalse,[Reg,AtomTrue]}|Acc])
- end;
+blockify([{get_map_elements,F,S,{list,Gets}}|Is0], Acc) ->
+ %% A get_map_elements instruction is only safe at the beginning of
+ %% a block because of the failure label.
+ {Ss,Ds} = beam_utils:split_even(Gets),
+ I = {set,Ds,[S|Ss],{get_map_elements,F}},
+ {Block,Is} = collect_block(Is0, [I]),
+ blockify(Is, [{block,Block}|Acc]);
blockify([I|Is0]=IsAll, Acc) ->
- case is_bs_put(I) of
- true ->
- {BsPuts0,Is} = collect_bs_puts(IsAll),
- BsPuts = opt_bs_puts(BsPuts0),
- blockify(Is, reverse(BsPuts, Acc));
- false ->
- case collect(I) of
- error -> blockify(Is0, [I|Acc]);
- Instr when is_tuple(Instr) ->
- {Block,Is} = collect_block(IsAll),
- blockify(Is, [{block,Block}|Acc])
- end
+ case collect(I) of
+ error -> blockify(Is0, [I|Acc]);
+ Instr when is_tuple(Instr) ->
+ {Block,Is} = collect_block(IsAll),
+ blockify(Is, [{block,Block}|Acc])
end;
blockify([], Acc) -> reverse(Acc).
-is_last_bool([{set,[Reg],As,{bif,N,_}}], Reg) ->
- Ar = length(As),
- erl_internal:new_type_test(N, Ar) orelse erl_internal:comp_op(N, Ar)
- orelse erl_internal:bool_op(N, Ar);
-is_last_bool([_|Is], Reg) -> is_last_bool(Is, Reg);
-is_last_bool([], _) -> false.
-
collect_block(Is) ->
collect_block(Is, []).
+collect_block([{allocate,N,R}|Is0], Acc) ->
+ {Inits,Is} = lists:splitwith(fun ({init,{y,_}}) -> true;
+ (_) -> false
+ end, Is0),
+ collect_block(Is, [{set,[],[],{alloc,R,{nozero,N,0,Inits}}}|Acc]);
collect_block([{allocate_zero,Ns,R},{test_heap,Nh,R}|Is], Acc) ->
- collect_block(Is, [{set,[],[],{alloc,R,{no_opt,Ns,Nh,[]}}}|Acc]);
+ collect_block(Is, [{set,[],[],{alloc,R,{zero,Ns,Nh,[]}}}|Acc]);
collect_block([I|Is]=Is0, Acc) ->
case collect(I) of
error -> {reverse(Acc),Is0};
Instr -> collect_block(Is, [Instr|Acc])
- end.
+ end;
+collect_block([], Acc) ->
+ {reverse(Acc),[]}.
+collect({allocate,N,R}) -> {set,[],[],{alloc,R,{nozero,N,0,[]}}};
collect({allocate_zero,N,R}) -> {set,[],[],{alloc,R,{zero,N,0,[]}}};
+collect({allocate_heap,Ns,Nh,R}) -> {set,[],[],{alloc,R,{nozero,Ns,Nh,[]}}};
+collect({allocate_heap_zero,Ns,Nh,R}) -> {set,[],[],{alloc,R,{zero,Ns,Nh,[]}}};
+collect({init,D}) -> {set,[D],[],init};
collect({test_heap,N,R}) -> {set,[],[],{alloc,R,{nozero,nostack,N,[]}}};
collect({bif,N,F,As,D}) -> {set,[D],As,{bif,N,F}};
collect({gc_bif,N,F,R,As,D}) -> {set,[D],As,{alloc,R,{gc_bif,N,F}}};
@@ -143,7 +108,16 @@ collect({get_tuple_element,S,I,D}) -> {set,[D],[S],{get_tuple_element,I}};
collect({set_tuple_element,S,D,I}) -> {set,[],[S,D],{set_tuple_element,I}};
collect({get_list,S,D1,D2}) -> {set,[D1,D2],[S],get_list};
collect(remove_message) -> {set,[],[],remove_message};
-collect({'catch',R,L}) -> {set,[R],[],{'catch',L}};
+collect({put_map,F,Op,S,D,R,{list,Puts}}) ->
+ {set,[D],[S|Puts],{alloc,R,{put_map,Op,F}}};
+collect({'catch'=Op,R,L}) ->
+ {set,[R],[],{try_catch,Op,L}};
+collect({'try'=Op,R,L}) ->
+ {set,[R],[],{try_catch,Op,L}};
+collect(fclearerror) -> {set,[],[],fclearerror};
+collect({fcheckerror,{f,0}}) -> {set,[],[],fcheckerror};
+collect({fmove,S,D}) -> {set,[D],[S],fmove};
+collect({fconv,S,D}) -> {set,[D],[S],fconv};
collect(_) -> error.
%% embed_lines([Instruction]) -> [Instruction]
@@ -166,14 +140,16 @@ embed_lines([], Acc) -> Acc.
opt_blocks([{block,Bl0}|Is]) ->
%% The live annotation at the beginning is not useful.
- [{'%live',_}|Bl] = Bl0,
+ [{'%live',_,_}|Bl] = Bl0,
[{block,opt_block(Bl)}|opt_blocks(Is)];
opt_blocks([I|Is]) ->
[I|opt_blocks(Is)];
opt_blocks([]) -> [].
opt_block(Is0) ->
- Is = find_fixpoint(fun opt/1, Is0),
+ Is = find_fixpoint(fun(Is) ->
+ opt_tuple_element(opt(Is))
+ end, Is0),
opt_alloc(Is).
find_fixpoint(OptFun, Is0) ->
@@ -223,6 +199,7 @@ move_allocates_2(Alloc, [], Acc) ->
alloc_may_pass({set,_,_,{alloc,_,_}}) -> false;
alloc_may_pass({set,_,_,{set_tuple_element,_}}) -> false;
+alloc_may_pass({set,_,_,{get_map_elements,_}}) -> false;
alloc_may_pass({set,_,_,put_list}) -> false;
alloc_may_pass({set,_,_,put}) -> false;
alloc_may_pass({set,_,_,_}) -> true.
@@ -233,13 +210,6 @@ combine_alloc({_,Ns,Nh1,Init}, {_,nostack,Nh2,[]}) ->
%% opt([Instruction]) -> [Instruction]
%% Optimize the instruction stream inside a basic block.
-opt([{set,[Dst],As,{bif,Bif,Fail}}=I1,
- {set,[Dst],[Dst],{bif,'not',Fail}}=I2|Is]) ->
- %% Get rid of the 'not' if the operation can be inverted.
- case inverse_comp_op(Bif) of
- none -> [I1,I2|opt(Is)];
- RevBif -> [{set,[Dst],As,{bif,RevBif,Fail}}|opt(Is)]
- end;
opt([{set,[X],[X],move}|Is]) -> opt(Is);
opt([{set,_,_,{line,_}}=Line1,
{set,[D1],[{integer,Idx1},Reg],{bif,element,{f,0}}}=I1,
@@ -247,10 +217,12 @@ opt([{set,_,_,{line,_}}=Line1,
{set,[D2],[{integer,Idx2},Reg],{bif,element,{f,0}}}=I2|Is])
when Idx1 < Idx2, D1 =/= D2, D1 =/= Reg, D2 =/= Reg ->
opt([Line2,I2,Line1,I1|Is]);
-opt([{set,Ds0,Ss,Op}|Is0]) ->
+opt([{set,[_|_],_Ss,{get_map_elements,_F}}=I|Is]) ->
+ [I|opt(Is)];
+opt([{set,Ds0,Ss,Op}|Is0]) ->
{Ds,Is} = opt_moves(Ds0, Is0),
[{set,Ds,Ss,Op}|opt(Is)];
-opt([{'%live',_}=I|Is]) ->
+opt([{'%live',_,_}=I|Is]) ->
[I|opt(Is)];
opt([]) -> [].
@@ -279,66 +251,150 @@ opt_moves([X0,Y0], Is0) ->
%% If there is a {move,Dest,FinalDest} instruction
%% in the instruction stream, remove the move instruction
%% and let FinalDest be the destination.
-%%
-%% For this optimization to be safe, we must be sure that
-%% Dest will not be referenced in any other by other instructions
-%% in the rest of the instruction stream. Not even the indirect
-%% reference by an instruction that may allocate (such as
-%% test_heap/2 or a GC Bif) is allowed.
opt_move(Dest, Is) ->
- opt_move_1(Dest, Is, ?MAXREG, []).
-
-opt_move_1(R, [{set,_,_,{alloc,Live,_}}|_]=Is, SafeRegs, Acc) when Live < SafeRegs ->
- %% Downgrade number of safe regs and rescan the instruction, as it most probably
- %% is a gc_bif instruction.
- opt_move_1(R, Is, Live, Acc);
-opt_move_1(R, [{set,[{x,X}=D],[R],move}|Is], SafeRegs, Acc) ->
- case X < SafeRegs andalso beam_utils:is_killed_block(R, Is) of
- true -> opt_move_2(D, Acc, Is);
- false -> not_possible
+ opt_move_1(Dest, Is, []).
+
+opt_move_1(R, [{set,[D],[R],move}|Is0], Acc) ->
+ %% Provided that the source register is killed by instructions
+ %% that follow, the optimization is safe.
+ case eliminate_use_of_from_reg(Is0, R, D, []) of
+ {yes,Is} -> opt_move_rev(D, Acc, Is);
+ no -> not_possible
end;
-opt_move_1(R, [{set,[D],[R],move}|Is], _SafeRegs, Acc) ->
- case beam_utils:is_killed_block(R, Is) of
- true -> opt_move_2(D, Acc, Is);
- false -> not_possible
+opt_move_1(_R, [{set,_,_,{alloc,_,_}}|_], _) ->
+ %% The optimization is either not possible or not safe.
+ %%
+ %% If R is an X register killed by allocation, the optimization is
+ %% not safe. On the other hand, if the X register is killed, there
+ %% will not follow a 'move' instruction with this X register as
+ %% the source.
+ %%
+ %% If R is a Y register, the optimization is still not safe
+ %% because the new target register is an X register that cannot
+ %% safely pass the alloc instruction.
+ not_possible;
+opt_move_1(R, [{set,_,_,_}=I|Is], Acc) ->
+ %% If the source register is either killed or used by this
+ %% instruction, the optimimization is not possible.
+ case is_killed_or_used(R, I) of
+ true -> not_possible;
+ false -> opt_move_1(R, Is, [I|Acc])
end;
-opt_move_1(R, [I|Is], SafeRegs, Acc) ->
- case is_transparent(R, I) of
- false -> not_possible;
- true -> opt_move_1(R, Is, SafeRegs, [I|Acc])
- end.
+opt_move_1(_, _, _) ->
+ not_possible.
-%% Reverse the instructions, while checking that there are no instructions that
-%% would interfere with using the new destination register chosen.
+%% opt_tuple_element([Instruction]) -> [Instruction]
+%% If possible, move get_tuple_element instructions forward
+%% in the instruction stream to a move instruction, eliminating
+%% the move instruction. Example:
+%%
+%% get_tuple_element Tuple Pos Dst1
+%% ...
+%% move Dst1 Dst2
+%%
+%% This code may be possible to rewrite to:
+%%
+%% %%(Moved get_tuple_element instruction)
+%% ...
+%% get_tuple_element Tuple Pos Dst2
+%%
-opt_move_2(D, [I|Is], Acc) ->
- case is_transparent(D, I) of
- false -> not_possible;
- true -> opt_move_2(D, Is, [I|Acc])
+opt_tuple_element([{set,[D],[S],{get_tuple_element,_}}=I|Is0]) ->
+ case opt_tuple_element_1(Is0, I, {S,D}, []) of
+ no ->
+ [I|opt_tuple_element(Is0)];
+ {yes,Is} ->
+ opt_tuple_element(Is)
end;
-opt_move_2(D, [], Acc) -> {D,Acc}.
-
-%% is_transparent(Register, Instruction) -> true | false
-%% Returns true if Instruction does not in any way references Register
-%% (even indirectly by an allocation instruction).
-%% Returns false if Instruction does reference Register, or we are
-%% not sure.
-
-is_transparent({x,X}, {set,_,_,{alloc,Live,_}}) when X < Live ->
- false;
-is_transparent(R, {set,Ds,Ss,_Op}) ->
- case member(R, Ds) of
- true -> false;
- false -> not member(R, Ss)
+opt_tuple_element([I|Is]) ->
+ [I|opt_tuple_element(Is)];
+opt_tuple_element([]) -> [].
+
+opt_tuple_element_1([{set,_,_,{alloc,_,_}}|_], _, _, _) ->
+ no;
+opt_tuple_element_1([{set,_,_,{try_catch,_,_}}|_], _, _, _) ->
+ no;
+opt_tuple_element_1([{set,[D],[S],move}|Is0], I0, {_,S}, Acc) ->
+ case eliminate_use_of_from_reg(Is0, S, D, []) of
+ no ->
+ no;
+ {yes,Is} ->
+ {set,[S],Ss,Op} = I0,
+ I = {set,[D],Ss,Op},
+ {yes,reverse(Acc, [I|Is])}
end;
-is_transparent(_, _) -> false.
+opt_tuple_element_1([{set,Ds,Ss,_}=I|Is], MovedI, {S,D}=Regs, Acc) ->
+ case member(S, Ds) orelse member(D, Ss) of
+ true ->
+ no;
+ false ->
+ opt_tuple_element_1(Is, MovedI, Regs, [I|Acc])
+ end;
+opt_tuple_element_1(_, _, _, _) -> no.
+
+%% Reverse the instructions, while checking that there are no
+%% instructions that would interfere with using the new destination
+%% register (D).
+
+opt_move_rev(D, [I|Is], Acc) ->
+ case is_killed_or_used(D, I) of
+ true -> not_possible;
+ false -> opt_move_rev(D, Is, [I|Acc])
+ end;
+opt_move_rev(D, [], Acc) -> {D,Acc}.
+
+%% is_killed_or_used(Register, {set,_,_,_}) -> bool()
+%% Test whether the register is used by the instruction.
+
+is_killed_or_used(R, {set,Ss,Ds,_}) ->
+ member(R, Ds) orelse member(R, Ss).
+
+%% eliminate_use_of_from_reg([Instruction], FromRegister, ToRegister, Acc) ->
+%% {yes,Is} | no
+%% Eliminate any use of FromRegister in the instruction sequence
+%% by replacing uses of FromRegister with ToRegister. If FromRegister
+%% is referenced by an allocation instruction, return 'no' to indicate
+%% that FromRegister is still used and that the optimization is not
+%% possible.
+
+eliminate_use_of_from_reg([{set,_,_,{alloc,Live,_}}|_]=Is0, {x,X}, _, Acc) ->
+ if
+ X < Live ->
+ no;
+ true ->
+ {yes,reverse(Acc, Is0)}
+ end;
+eliminate_use_of_from_reg([{set,Ds,Ss0,Op}=I0|Is], From, To, Acc) ->
+ I = case member(From, Ss0) of
+ true ->
+ Ss = [case S of
+ From -> To;
+ _ -> S
+ end || S <- Ss0],
+ {set,Ds,Ss,Op};
+ false ->
+ I0
+ end,
+ case member(From, Ds) of
+ true ->
+ {yes,reverse(Acc, [I|Is])};
+ false ->
+ eliminate_use_of_from_reg(Is, From, To, [I|Acc])
+ end;
+eliminate_use_of_from_reg([I]=Is, From, _To, Acc) ->
+ case beam_utils:is_killed_block(From, [I]) of
+ true ->
+ {yes,reverse(Acc, Is)};
+ false ->
+ no
+ end.
%% opt_alloc(Instructions) -> Instructions'
%% Optimises all allocate instructions.
opt_alloc([{set,[],[],{alloc,R,{_,Ns,Nh,[]}}}|Is]) ->
- [{set,[],[],opt_alloc(Is, Ns, Nh, R)}|opt(Is)];
+ [{set,[],[],opt_alloc(Is, Ns, Nh, R)}|Is];
opt_alloc([I|Is]) -> [I|opt_alloc(Is)];
opt_alloc([]) -> [].
@@ -370,6 +426,7 @@ gen_init(Fs, Regs, Y, Acc) ->
init_yreg([{set,_,_,{bif,_,_}}|_], Reg) -> Reg;
init_yreg([{set,_,_,{alloc,_,{gc_bif,_,_}}}|_], Reg) -> Reg;
+init_yreg([{set,_,_,{alloc,_,{put_map,_,_}}}|_], Reg) -> Reg;
init_yreg([{set,Ds,_,_}|Is], Reg) -> init_yreg(Is, add_yregs(Ds, Reg));
init_yreg(_Is, Reg) -> Reg.
@@ -403,246 +460,3 @@ x_dead([], Regs) -> Regs.
x_live([{x,N}|Rs], Regs) -> x_live(Rs, Regs bor (1 bsl N));
x_live([_|Rs], Regs) -> x_live(Rs, Regs);
x_live([], Regs) -> Regs.
-
-%% inverse_comp_op(Op) -> none|RevOp
-
-inverse_comp_op('=:=') -> '=/=';
-inverse_comp_op('=/=') -> '=:=';
-inverse_comp_op('==') -> '/=';
-inverse_comp_op('/=') -> '==';
-inverse_comp_op('>') -> '=<';
-inverse_comp_op('<') -> '>=';
-inverse_comp_op('>=') -> '<';
-inverse_comp_op('=<') -> '>';
-inverse_comp_op(_) -> none.
-
-%%%
-%%% Evaluation of constant bit fields.
-%%%
-
-is_bs_put({bs_put,_,{bs_put_integer,_,_},_}) -> true;
-is_bs_put({bs_put,_,{bs_put_float,_,_},_}) -> true;
-is_bs_put(_) -> false.
-
-collect_bs_puts(Is) ->
- collect_bs_puts_1(Is, []).
-
-collect_bs_puts_1([I|Is]=Is0, Acc) ->
- case is_bs_put(I) of
- false -> {reverse(Acc),Is0};
- true -> collect_bs_puts_1(Is, [I|Acc])
- end.
-
-opt_bs_puts(Is) ->
- opt_bs_1(Is, []).
-
-opt_bs_1([{bs_put,Fail,
- {bs_put_float,1,Flags0},[{integer,Sz},Src]}=I0|Is], Acc) ->
- try eval_put_float(Src, Sz, Flags0) of
- <<Int:Sz>> ->
- Flags = force_big(Flags0),
- I = {bs_put,Fail,{bs_put_integer,1,Flags},
- [{integer,Sz},{integer,Int}]},
- opt_bs_1([I|Is], Acc)
- catch
- error:_ ->
- opt_bs_1(Is, [I0|Acc])
- end;
-opt_bs_1([{bs_put,_,{bs_put_integer,1,_},[{integer,8},{integer,_}]}|_]=IsAll,
- Acc0) ->
- {Is,Acc} = bs_collect_string(IsAll, Acc0),
- opt_bs_1(Is, Acc);
-opt_bs_1([{bs_put,Fail,{bs_put_integer,1,F},[{integer,Sz},{integer,N}]}=I|Is0],
- Acc) when Sz > 8 ->
- case field_endian(F) of
- big ->
- %% We can do this optimization for any field size without risk
- %% for code explosion.
- case bs_split_int(N, Sz, Fail, Is0) of
- no_split -> opt_bs_1(Is0, [I|Acc]);
- Is -> opt_bs_1(Is, Acc)
- end;
- little when Sz < 128 ->
- %% We only try to optimize relatively small fields, to avoid
- %% an explosion in code size.
- <<Int:Sz>> = <<N:Sz/little>>,
- Flags = force_big(F),
- Is = [{bs_put,Fail,{bs_put_integer,1,Flags},
- [{integer,Sz},{integer,Int}]}|Is0],
- opt_bs_1(Is, Acc);
- _ -> %native or too wide little field
- opt_bs_1(Is0, [I|Acc])
- end;
-opt_bs_1([{bs_put,Fail,{Op,U,F},[{integer,Sz},Src]}|Is], Acc) when U > 1 ->
- opt_bs_1([{bs_put,Fail,{Op,1,F},[{integer,U*Sz},Src]}|Is], Acc);
-opt_bs_1([I|Is], Acc) ->
- opt_bs_1(Is, [I|Acc]);
-opt_bs_1([], Acc) -> reverse(Acc).
-
-eval_put_float(Src, Sz, Flags) when Sz =< 256 -> %Only evaluate if Sz is reasonable.
- Val = value(Src),
- case field_endian(Flags) of
- little -> <<Val:Sz/little-float-unit:1>>;
- big -> <<Val:Sz/big-float-unit:1>>
- %% native intentionally not handled here - we can't optimize it.
- end.
-
-value({integer,I}) -> I;
-value({float,F}) -> F.
-
-bs_collect_string(Is, [{bs_put,_,{bs_put_string,Len,{string,Str}},[]}|Acc]) ->
- bs_coll_str_1(Is, Len, reverse(Str), Acc);
-bs_collect_string(Is, Acc) ->
- bs_coll_str_1(Is, 0, [], Acc).
-
-bs_coll_str_1([{bs_put,_,{bs_put_integer,U,_},[{integer,Sz},{integer,V}]}|Is],
- Len, StrAcc, IsAcc) when U*Sz =:= 8 ->
- Byte = V band 16#FF,
- bs_coll_str_1(Is, Len+1, [Byte|StrAcc], IsAcc);
-bs_coll_str_1(Is, Len, StrAcc, IsAcc) ->
- {Is,[{bs_put,{f,0},{bs_put_string,Len,{string,reverse(StrAcc)}},[]}|IsAcc]}.
-
-field_endian({field_flags,F}) -> field_endian_1(F).
-
-field_endian_1([big=E|_]) -> E;
-field_endian_1([little=E|_]) -> E;
-field_endian_1([native=E|_]) -> E;
-field_endian_1([_|Fs]) -> field_endian_1(Fs).
-
-force_big({field_flags,F}) ->
- {field_flags,force_big_1(F)}.
-
-force_big_1([big|_]=Fs) -> Fs;
-force_big_1([little|Fs]) -> [big|Fs];
-force_big_1([F|Fs]) -> [F|force_big_1(Fs)].
-
-bs_split_int(0, Sz, _, _) when Sz > 64 ->
- %% We don't want to split in this case because the
- %% string will consist of only zeroes.
- no_split;
-bs_split_int(-1, Sz, _, _) when Sz > 64 ->
- %% We don't want to split in this case because the
- %% string will consist of only 255 bytes.
- no_split;
-bs_split_int(N, Sz, Fail, Acc) ->
- FirstByteSz = case Sz rem 8 of
- 0 -> 8;
- Rem -> Rem
- end,
- bs_split_int_1(N, FirstByteSz, Sz, Fail, Acc).
-
-bs_split_int_1(-1, _, Sz, Fail, Acc) when Sz > 64 ->
- I = {bs_put,Fail,{bs_put_integer,1,{field_flags,[big]}},
- [{integer,Sz},{integer,-1}]},
- [I|Acc];
-bs_split_int_1(0, _, Sz, Fail, Acc) when Sz > 64 ->
- I = {bs_put,Fail,{bs_put_integer,1,{field_flags,[big]}},
- [{integer,Sz},{integer,0}]},
- [I|Acc];
-bs_split_int_1(N, ByteSz, Sz, Fail, Acc) when Sz > 0 ->
- Mask = (1 bsl ByteSz) - 1,
- I = {bs_put,Fail,{bs_put_integer,1,{field_flags,[big]}},
- [{integer,ByteSz},{integer,N band Mask}]},
- bs_split_int_1(N bsr ByteSz, 8, Sz-ByteSz, Fail, [I|Acc]);
-bs_split_int_1(_, _, _, _, Acc) -> Acc.
-
-
-%%%
-%%% Optimization of new bit syntax matching: get rid
-%%% of redundant bs_restore2/2 instructions across select_val
-%%% instructions, as well as a few other simple peep-hole optimizations.
-%%%
-
-bsm_opt(Is0, Lc0) ->
- {Is1,D0,Lc} = bsm_scan(Is0, [], Lc0, []),
- Is2 = case D0 of
- [] ->
- Is1;
- _ ->
- D = gb_trees:from_orddict(orddict:from_list(D0)),
- bsm_reroute(Is1, D, none, [])
- end,
- Is = beam_clean:bs_clean_saves(Is2),
- {bsm_opt_2(Is, []),Lc}.
-
-bsm_scan([{label,L}=Lbl,{bs_restore2,_,Save}=R|Is], D0, Lc, Acc0) ->
- D = [{{L,Save},Lc}|D0],
- Acc = [{label,Lc},R,Lbl|Acc0],
- bsm_scan(Is, D, Lc+1, Acc);
-bsm_scan([I|Is], D, Lc, Acc) ->
- bsm_scan(Is, D, Lc, [I|Acc]);
-bsm_scan([], D, Lc, Acc) ->
- {reverse(Acc),D,Lc}.
-
-bsm_reroute([{bs_save2,Reg,Save}=I|Is], D, _, Acc) ->
- bsm_reroute(Is, D, {Reg,Save}, [I|Acc]);
-bsm_reroute([{bs_restore2,Reg,Save}=I|Is], D, _, Acc) ->
- bsm_reroute(Is, D, {Reg,Save}, [I|Acc]);
-bsm_reroute([{label,_}=I|Is], D, S, Acc) ->
- bsm_reroute(Is, D, S, [I|Acc]);
-bsm_reroute([{select,select_val,Reg,F0,Lbls0}|Is], D, {_,Save}=S, Acc0) ->
- [F|Lbls] = bsm_subst_labels([F0|Lbls0], Save, D),
- Acc = [{select,select_val,Reg,F,Lbls}|Acc0],
- bsm_reroute(Is, D, S, Acc);
-bsm_reroute([{test,TestOp,F0,TestArgs}=I|Is], D, {_,Save}=S, Acc0) ->
- F = bsm_subst_label(F0, Save, D),
- Acc = [{test,TestOp,F,TestArgs}|Acc0],
- case bsm_not_bs_test(I) of
- true ->
- %% The test instruction will not update the bit offset for the
- %% binary being matched. Therefore the save position can be kept.
- bsm_reroute(Is, D, S, Acc);
- false ->
- %% The test instruction might update the bit offset. Kill our
- %% remembered Save position.
- bsm_reroute(Is, D, none, Acc)
- end;
-bsm_reroute([{test,TestOp,F0,Live,TestArgs,Dst}|Is], D, {_,Save}, Acc0) ->
- F = bsm_subst_label(F0, Save, D),
- Acc = [{test,TestOp,F,Live,TestArgs,Dst}|Acc0],
- %% The test instruction will update the bit offset. Kill our
- %% remembered Save position.
- bsm_reroute(Is, D, none, Acc);
-bsm_reroute([{block,[{set,[],[],{alloc,_,_}}]}=Bl,
- {bs_context_to_binary,_}=I|Is], D, S, Acc) ->
- %% To help further bit syntax optimizations.
- bsm_reroute([I,Bl|Is], D, S, Acc);
-bsm_reroute([I|Is], D, _, Acc) ->
- bsm_reroute(Is, D, none, [I|Acc]);
-bsm_reroute([], _, _, Acc) -> reverse(Acc).
-
-bsm_opt_2([{test,bs_test_tail2,F,[Ctx,Bits]}|Is],
- [{test,bs_skip_bits2,F,[Ctx,{integer,I},Unit,_Flags]}|Acc]) ->
- bsm_opt_2(Is, [{test,bs_test_tail2,F,[Ctx,Bits+I*Unit]}|Acc]);
-bsm_opt_2([{test,bs_skip_bits2,F,[Ctx,{integer,I1},Unit1,_]}|Is],
- [{test,bs_skip_bits2,F,[Ctx,{integer,I2},Unit2,Flags]}|Acc]) ->
- bsm_opt_2(Is, [{test,bs_skip_bits2,F,
- [Ctx,{integer,I1*Unit1+I2*Unit2},1,Flags]}|Acc]);
-bsm_opt_2([I|Is], Acc) ->
- bsm_opt_2(Is, [I|Acc]);
-bsm_opt_2([], Acc) -> reverse(Acc).
-
-%% bsm_not_bs_test({test,Name,_,Operands}) -> true|false.
-%% Test whether is the test is a "safe", i.e. does not move the
-%% bit offset for a binary.
-%%
-%% 'true' means that the test is safe, 'false' that we don't know or
-%% that the test moves the offset (e.g. bs_get_integer2).
-
-bsm_not_bs_test({test,bs_test_tail2,_,[_,_]}) -> true;
-bsm_not_bs_test(Test) -> beam_utils:is_pure_test(Test).
-
-bsm_subst_labels(Fs, Save, D) ->
- bsm_subst_labels_1(Fs, Save, D, []).
-
-bsm_subst_labels_1([F|Fs], Save, D, Acc) ->
- bsm_subst_labels_1(Fs, Save, D, [bsm_subst_label(F, Save, D)|Acc]);
-bsm_subst_labels_1([], _, _, Acc) ->
- reverse(Acc).
-
-bsm_subst_label({f,Lbl0}=F, Save, D) ->
- case gb_trees:lookup({Lbl0,Save}, D) of
- {value,Lbl} -> {f,Lbl};
- none -> F
- end;
-bsm_subst_label(Other, _, _) -> Other.
diff --git a/lib/compiler/src/beam_bool.erl b/lib/compiler/src/beam_bool.erl
index cf5455dfde..99e4ccb1e9 100644
--- a/lib/compiler/src/beam_bool.erl
+++ b/lib/compiler/src/beam_bool.erl
@@ -1,18 +1,19 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2004-2013. All Rights Reserved.
+%% Copyright Ericsson AB 2004-2016. All Rights Reserved.
%%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
%%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
%%
%% %CopyrightEnd%
%%
@@ -24,8 +25,6 @@
-import(lists, [reverse/1,reverse/2,foldl/3,mapfoldl/3,map/2]).
--define(MAXREG, 1024).
-
-record(st,
{next, %Next label number.
ll %Live regs at labels.
@@ -126,44 +125,48 @@ bopt_block(Reg, Fail, OldIs, [{block,Bl0}|Acc0], St0) ->
%% There was a reference to a boolean expression
%% from inside a protected block (try/catch), to
%% a boolean expression outside.
- throw:protected_barrier ->
+ throw:protected_barrier ->
failed;
- %% The 'xor' operator was used. We currently don't
- %% find it worthwile to translate 'xor' operators
- %% (the code would be clumsy).
- throw:'xor' ->
+ %% The 'xor' operator was used. We currently don't
+ %% find it worthwile to translate 'xor' operators
+ %% (the code would be clumsy).
+ throw:'xor' ->
failed;
- %% The block does not contain a boolean expression,
- %% but only a call to a guard BIF.
- %% For instance: ... when element(1, T) ->
- throw:not_boolean_expr ->
- failed;
-
- %% The block contains a 'move' instruction that could
- %% not be handled.
- throw:move ->
+ %% The block does not contain a boolean expression,
+ %% but only a call to a guard BIF.
+ %% For instance: ... when element(1, T) ->
+ throw:not_boolean_expr ->
failed;
- %% The optimization is not safe. (A register
- %% used by the instructions following the
- %% optimized code is either not assigned a
- %% value at all or assigned a different value.)
- throw:all_registers_not_killed ->
+ %% The optimization is not safe. (A register
+ %% used by the instructions following the
+ %% optimized code is either not assigned a
+ %% value at all or assigned a different value.)
+ throw:all_registers_not_killed ->
+ failed;
+ throw:registers_used ->
failed;
- throw:registers_used ->
+
+ %% A protected block refered to the value
+ %% returned by another protected block,
+ %% probably because the Core Erlang code
+ %% used nested try/catches in the guard.
+ %% (v3_core never produces nested try/catches
+ %% in guards, so it must have been another
+ %% Core Erlang translator.)
+ throw:protected_violation ->
failed;
- %% A protected block refered to the value
- %% returned by another protected block,
- %% probably because the Core Erlang code
- %% used nested try/catches in the guard.
- %% (v3_core never produces nested try/catches
- %% in guards, so it must have been another
- %% Core Erlang translator.)
- throw:protected_violation ->
+ %% Failed to work out the live registers for a GC
+ %% BIF. For example, if the number of live registers
+ %% needed to be 4 because {x,3} was a source register,
+ %% but {x,2} was not known to be initialized, this
+ %% exception would be thrown.
+ throw:gc_bif_alloc_failure ->
failed
+
end
end.
@@ -205,37 +208,14 @@ ensure_opt_safe(Bl, NewCode, OldIs, Fail, PrecedingCode, St) ->
false -> throw(all_registers_not_killed);
true -> ok
end,
- Same = assigned_same_value(Bl, NewCode),
MustBeUnused = ordsets:subtract(ordsets:union(NotSet, NewDst),
- ordsets:union(MustBeKilled, Same)),
+ MustBeKilled),
case none_used(MustBeUnused, OldIs, Fail, St) of
false -> throw(registers_used);
true -> ok
end,
ok.
-%% assigned_same_value(OldCode, NewCodeReversed) -> [DestinationRegs]
-%% Return an ordset with a list of all y registers that are always
-%% assigned the same value in the old and new code. Currently, we
-%% are very conservative in that we only consider identical move
-%% instructions in the same order.
-%%
-assigned_same_value(Old, New) ->
- case reverse(New) of
- [{block,Bl}|_] ->
- assigned_same_value(Old, Bl, []);
- _ ->
- ordsets:new()
- end.
-
-assigned_same_value([{set,[{y,_}=D],[S],move}|T1],
- [{set,[{y,_}=D],[S],move}|T2], Acc) ->
- assigned_same_value(T1, T2, [D|Acc]);
-assigned_same_value(_, _, Acc) ->
- ordsets:from_list(Acc).
-
-update_fail_label([{set,_,_,move}=I|Is], Fail, Acc) ->
- update_fail_label(Is, Fail, [I|Acc]);
update_fail_label([{set,Ds,As,{bif,N,{f,_}}}|Is], Fail, Acc) ->
update_fail_label(Is, Fail, [{set,Ds,As,{bif,N,{f,Fail}}}|Acc]);
update_fail_label([{set,Ds,As,{alloc,Regs,{gc_bif,N,{f,_}}}}|Is], Fail, Acc) ->
@@ -258,9 +238,9 @@ extend_block(BlAcc0, Fail, [{block,Is0}|OldAcc]) ->
end;
extend_block(BlAcc, _, OldAcc) -> {BlAcc,OldAcc}.
-extend_block_1([{set,[_],_,{bif,_,{f,Fail}}}=I|Is], Fail, Acc) ->
+extend_block_1([{set,[{x,_}],_,{bif,_,{f,Fail}}}=I|Is], Fail, Acc) ->
extend_block_1(Is, Fail, [I|Acc]);
-extend_block_1([{set,[_],As,{bif,Bif,_}}=I|Is]=Is0, Fail, Acc) ->
+extend_block_1([{set,[{x,_}],As,{bif,Bif,_}}=I|Is]=Is0, Fail, Acc) ->
case safe_bool_op(Bif, length(As)) of
false -> {Acc,reverse(Is0)};
true -> extend_block_1(Is, Fail, [I|Acc])
@@ -304,8 +284,6 @@ split_block_1(Is, Fail, ProhibitFailLabel) ->
end
end.
-split_block_2([{set,_,_,move}=I|Is], Fail, Acc) ->
- split_block_2(Is, Fail, [I|Acc]);
split_block_2([{set,[_],_,{bif,_,{f,Fail}}}=I|Is], Fail, Acc) ->
split_block_2(Is, Fail, [I|Acc]);
split_block_2([{set,[_],_,{alloc,_,{gc_bif,_,{f,Fail}}}}=I|Is], Fail, Acc) ->
@@ -318,6 +296,8 @@ split_block_label_used([{set,[_],_,{bif,_,{f,Fail}}}|_], Fail) ->
true;
split_block_label_used([{set,[_],_,{alloc,_,{gc_bif,_,{f,Fail}}}}|_], Fail) ->
true;
+split_block_label_used([{set,[_],_,{alloc,_,{put_map,_,{f,Fail}}}}|_], Fail) ->
+ true;
split_block_label_used([_|Is], Fail) ->
split_block_label_used(Is, Fail);
split_block_label_used([], _) -> false.
@@ -331,8 +311,8 @@ dst_regs([{set,[D],_,{bif,_,{f,_}}}|Is], Acc) ->
dst_regs(Is, [D|Acc]);
dst_regs([{set,[D],_,{alloc,_,{gc_bif,_,{f,_}}}}|Is], Acc) ->
dst_regs(Is, [D|Acc]);
-dst_regs([{set,[D],_,move}|Is], Acc) ->
- dst_regs(Is, [D|Acc]);
+dst_regs([{protected,_,Bl,_}|Is], Acc) ->
+ dst_regs(Bl, dst_regs(Is, Acc));
dst_regs([_|Is], Acc) ->
dst_regs(Is, Acc);
dst_regs([], Acc) -> ordsets:from_list(Acc).
@@ -391,17 +371,14 @@ bopt_tree([{set,_,_,{bif,'xor',_}}|_], _, _) ->
throw('xor');
bopt_tree([{protected,[Dst],Code,_}|Is], Forest0, Pre) ->
ProtForest0 = gb_trees:from_orddict([P || {_,any}=P <- gb_trees:to_list(Forest0)]),
- {ProtPre,[{_,ProtTree}]} = bopt_tree(Code, ProtForest0, []),
- Prot = {prot,ProtPre,ProtTree},
- Forest = gb_trees:enter(Dst, Prot, Forest0),
- bopt_tree(Is, Forest, Pre);
-bopt_tree([{set,[Dst],[Src],move}=Move|Is], Forest, Pre) ->
- case {Src,Dst} of
- {{tmp,_},_} -> throw(move);
- {_,{tmp,_}} -> throw(move);
- _ -> ok
- end,
- bopt_tree(Is, Forest, [Move|Pre]);
+ case bopt_tree(Code, ProtForest0, []) of
+ {ProtPre,[{_,ProtTree}]} ->
+ Prot = {prot,ProtPre,ProtTree},
+ Forest = gb_trees:enter(Dst, Prot, Forest0),
+ bopt_tree(Is, Forest, Pre);
+ _Res ->
+ throw(not_boolean_expr)
+ end;
bopt_tree([{set,[Dst],As,{bif,N,_}}=Bif|Is], Forest0, Pre) ->
Ar = length(As),
case safe_bool_op(N, Ar) of
@@ -425,13 +402,17 @@ bopt_tree([], Forest, Pre) ->
safe_bool_op(N, Ar) ->
erl_internal:new_type_test(N, Ar) orelse erl_internal:comp_op(N, Ar).
+bopt_bool_args([V0,V0], Forest0) ->
+ {V,Forest} = bopt_bool_arg(V0, Forest0),
+ {[V,V],Forest};
bopt_bool_args(As, Forest) ->
mapfoldl(fun bopt_bool_arg/2, Forest, As).
bopt_bool_arg({T,_}=R, Forest) when T =:= x; T =:= y; T =:= tmp ->
- Val = case gb_trees:get(R, Forest) of
- any -> {test,is_eq_exact,fail,[R,{atom,true}]};
- Val0 -> Val0
+ Val = case gb_trees:lookup(R, Forest) of
+ {value,any} -> {test,is_eq_exact,fail,[R,{atom,true}]};
+ {value,Val0} -> Val0;
+ none -> throw(mixed)
end,
{Val,gb_trees:delete(R, Forest)};
bopt_bool_arg(Term, Forest) ->
@@ -522,7 +503,9 @@ bopt_cg({prot,Pre0,Tree}, Fail, Rs0, Acc, St0) ->
bopt_cg({atom,true}, _Fail, _Rs, Acc, St) ->
{Acc,St};
bopt_cg({atom,false}, Fail, _Rs, Acc, St) ->
- {[{jump,{f,Fail}}|Acc],St}.
+ {[{jump,{f,Fail}}|Acc],St};
+bopt_cg(_, _, _, _, _) ->
+ throw(not_boolean_expr).
bopt_cg_not({'and',As0}) ->
As = [bopt_cg_not(A) || A <- As0],
@@ -535,7 +518,9 @@ bopt_cg_not({'not',Arg}) ->
bopt_cg_not({test,Test,Fail,As}) ->
{inverted_test,Test,Fail,As};
bopt_cg_not({atom,Bool}) when is_boolean(Bool) ->
- {atom,not Bool}.
+ {atom,not Bool};
+bopt_cg_not(_) ->
+ throw(not_boolean_expr).
bopt_cg_not_not({'and',As}) ->
{'and',[bopt_cg_not_not(A) || A <- As]};
@@ -565,10 +550,6 @@ free_variables(Is) ->
E = gb_sets:empty(),
free_vars_1(Is, E, E, E).
-free_vars_1([{set,Ds,As,move}|Is], F0, N0, A) ->
- F = gb_sets:union(F0, gb_sets:difference(var_list(As), N0)),
- N = gb_sets:union(N0, var_list(Ds)),
- free_vars_1(Is, F, N, A);
free_vars_1([{set,Ds,As,{bif,_,_}}|Is], F0, N0, A) ->
F = gb_sets:union(F0, gb_sets:difference(var_list(As), N0)),
N = gb_sets:union(N0, var_list(Ds)),
@@ -608,8 +589,6 @@ free_vars_regs(X) -> [{x,X-1}|free_vars_regs(X-1)].
rename_regs(Is, Regs) ->
rename_regs(Is, Regs, []).
-rename_regs([{set,_,_,move}=I|Is], Regs, Acc) ->
- rename_regs(Is, Regs, [I|Acc]);
rename_regs([{set,[Dst0],Ss0,{alloc,_,Info}}|Is], Regs0, Acc) ->
Live = live_regs(Regs0),
Ss = rename_sources(Ss0, Regs0),
@@ -651,10 +630,16 @@ put_reg_1(V, [], I) -> [{I,V}].
fetch_reg(V, [{I,V}|_]) -> {x,I};
fetch_reg(V, [_|SRs]) -> fetch_reg(V, SRs).
-live_regs(Regs) ->
- foldl(fun ({I,_}, _) ->
- I
- end, -1, Regs)+1.
+live_regs([{_,reserved}|_]) ->
+ %% We are not sure that this register is initialized, so we must
+ %% abort the optimization.
+ throw(gc_bif_alloc_failure);
+live_regs([{I,_}]) ->
+ I+1;
+live_regs([{_,_}|Regs]) ->
+ live_regs(Regs);
+live_regs([]) ->
+ 0.
%%%
@@ -707,8 +692,7 @@ ssa_assign({x,_}=R, #ssa{sub=Sub0}=Ssa0) ->
Sub1 = gb_trees:update(R, NewReg, Sub0),
Sub = gb_trees:insert(NewReg, NewReg, Sub1),
Ssa#ssa{sub=Sub}
- end;
-ssa_assign(_, Ssa) -> Ssa.
+ end.
ssa_sub_list(List, Sub) ->
[ssa_sub(E, Sub) || E <- List].
@@ -758,6 +742,9 @@ is_not_used(R, Is, Label, #st{ll=Ll}) ->
initialized_regs(Is) ->
initialized_regs(Is, ordsets:new()).
+initialized_regs([{set,Dst,_Src,{alloc,Live,_}}|_], Regs0) ->
+ Regs = add_init_regs(free_vars_regs(Live), Regs0),
+ add_init_regs(Dst, Regs);
initialized_regs([{set,Dst,Src,_}|Is], Regs) ->
initialized_regs(Is, add_init_regs(Dst, add_init_regs(Src, Regs)));
initialized_regs([{test,_,_,Src}|Is], Regs) ->
diff --git a/lib/compiler/src/beam_bs.erl b/lib/compiler/src/beam_bs.erl
new file mode 100644
index 0000000000..2aed98d4e7
--- /dev/null
+++ b/lib/compiler/src/beam_bs.erl
@@ -0,0 +1,278 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 1999-2016. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+%% Purpose : Partitions assembly instructions into basic blocks and
+%% optimizes them.
+
+-module(beam_bs).
+
+-export([module/2]).
+-import(lists, [mapfoldl/3,reverse/1]).
+
+module({Mod,Exp,Attr,Fs0,Lc0}, _Opt) ->
+ {Fs,Lc} = mapfoldl(fun function/2, Lc0, Fs0),
+ {ok,{Mod,Exp,Attr,Fs,Lc}}.
+
+function({function,Name,Arity,CLabel,Is0}, Lc0) ->
+ try
+ Is1 = bs_put_opt(Is0),
+ {Is,Lc} = bsm_opt(Is1, Lc0),
+ {{function,Name,Arity,CLabel,Is},Lc}
+ catch
+ Class:Error ->
+ Stack = erlang:get_stacktrace(),
+ io:fwrite("Function: ~w/~w\n", [Name,Arity]),
+ erlang:raise(Class, Error, Stack)
+ end.
+
+%%%
+%%% Evaluation of constant bit fields.
+%%%
+
+bs_put_opt([{bs_put,_,_,_}=I|Is0]) ->
+ {BsPuts0,Is} = collect_bs_puts(Is0, [I]),
+ BsPuts = opt_bs_puts(BsPuts0),
+ BsPuts ++ bs_put_opt(Is);
+bs_put_opt([I|Is]) ->
+ [I|bs_put_opt(Is)];
+bs_put_opt([]) -> [].
+
+collect_bs_puts([{bs_put,_,_,_}=I|Is], Acc) ->
+ collect_bs_puts(Is, [I|Acc]);
+collect_bs_puts([_|_]=Is, Acc) ->
+ {reverse(Acc),Is}.
+
+opt_bs_puts(Is) ->
+ opt_bs_1(Is, []).
+
+opt_bs_1([{bs_put,Fail,
+ {bs_put_float,1,Flags0},[{integer,Sz},Src]}=I0|Is], Acc) ->
+ try eval_put_float(Src, Sz, Flags0) of
+ <<Int:Sz>> ->
+ Flags = force_big(Flags0),
+ I = {bs_put,Fail,{bs_put_integer,1,Flags},
+ [{integer,Sz},{integer,Int}]},
+ opt_bs_1([I|Is], Acc)
+ catch
+ error:_ ->
+ opt_bs_1(Is, [I0|Acc])
+ end;
+opt_bs_1([{bs_put,_,{bs_put_integer,1,_},[{integer,8},{integer,_}]}|_]=IsAll,
+ Acc0) ->
+ {Is,Acc} = bs_collect_string(IsAll, Acc0),
+ opt_bs_1(Is, Acc);
+opt_bs_1([{bs_put,Fail,{bs_put_integer,1,F},[{integer,Sz},{integer,N}]}=I|Is0],
+ Acc) when Sz > 8 ->
+ case field_endian(F) of
+ big ->
+ %% We can do this optimization for any field size without
+ %% risk for code explosion.
+ case bs_split_int(N, Sz, Fail, Is0) of
+ no_split -> opt_bs_1(Is0, [I|Acc]);
+ Is -> opt_bs_1(Is, Acc)
+ end;
+ little when Sz < 128 ->
+ %% We only try to optimize relatively small fields, to
+ %% avoid an explosion in code size.
+ <<Int:Sz>> = <<N:Sz/little>>,
+ Flags = force_big(F),
+ Is = [{bs_put,Fail,{bs_put_integer,1,Flags},
+ [{integer,Sz},{integer,Int}]}|Is0],
+ opt_bs_1(Is, Acc);
+ _ -> %native or too wide little field
+ opt_bs_1(Is0, [I|Acc])
+ end;
+opt_bs_1([{bs_put,Fail,{Op,U,F},[{integer,Sz},Src]}|Is], Acc) when U > 1 ->
+ opt_bs_1([{bs_put,Fail,{Op,1,F},[{integer,U*Sz},Src]}|Is], Acc);
+opt_bs_1([I|Is], Acc) ->
+ opt_bs_1(Is, [I|Acc]);
+opt_bs_1([], Acc) -> reverse(Acc).
+
+eval_put_float(Src, Sz, Flags) when Sz =< 256 ->
+ %%Only evaluate if Sz is reasonable.
+ Val = value(Src),
+ case field_endian(Flags) of
+ little -> <<Val:Sz/little-float-unit:1>>;
+ big -> <<Val:Sz/big-float-unit:1>>
+ %% native intentionally not handled here - we can't optimize
+ %% it.
+ end.
+
+value({integer,I}) -> I;
+value({float,F}) -> F.
+
+bs_collect_string(Is, [{bs_put,_,{bs_put_string,Len,{string,Str}},[]}|Acc]) ->
+ bs_coll_str_1(Is, Len, reverse(Str), Acc);
+bs_collect_string(Is, Acc) ->
+ bs_coll_str_1(Is, 0, [], Acc).
+
+bs_coll_str_1([{bs_put,_,{bs_put_integer,U,_},[{integer,Sz},{integer,V}]}|Is],
+ Len, StrAcc, IsAcc) when U*Sz =:= 8 ->
+ Byte = V band 16#FF,
+ bs_coll_str_1(Is, Len+1, [Byte|StrAcc], IsAcc);
+bs_coll_str_1(Is, Len, StrAcc, IsAcc) ->
+ {Is,[{bs_put,{f,0},{bs_put_string,Len,{string,reverse(StrAcc)}},[]}|IsAcc]}.
+
+field_endian({field_flags,F}) -> field_endian_1(F).
+
+field_endian_1([big=E|_]) -> E;
+field_endian_1([little=E|_]) -> E;
+field_endian_1([native=E|_]) -> E;
+field_endian_1([_|Fs]) -> field_endian_1(Fs).
+
+force_big({field_flags,F}) ->
+ {field_flags,force_big_1(F)}.
+
+force_big_1([big|_]=Fs) -> Fs;
+force_big_1([little|Fs]) -> [big|Fs];
+force_big_1([F|Fs]) -> [F|force_big_1(Fs)].
+
+bs_split_int(0, Sz, _, _) when Sz > 64 ->
+ %% We don't want to split in this case because the
+ %% string will consist of only zeroes.
+ no_split;
+bs_split_int(-1, Sz, _, _) when Sz > 64 ->
+ %% We don't want to split in this case because the
+ %% string will consist of only 255 bytes.
+ no_split;
+bs_split_int(N, Sz, Fail, Acc) ->
+ FirstByteSz = case Sz rem 8 of
+ 0 -> 8;
+ Rem -> Rem
+ end,
+ bs_split_int_1(N, FirstByteSz, Sz, Fail, Acc).
+
+bs_split_int_1(-1, _, Sz, Fail, Acc) when Sz > 64 ->
+ I = {bs_put,Fail,{bs_put_integer,1,{field_flags,[big]}},
+ [{integer,Sz},{integer,-1}]},
+ [I|Acc];
+bs_split_int_1(0, _, Sz, Fail, Acc) when Sz > 64 ->
+ I = {bs_put,Fail,{bs_put_integer,1,{field_flags,[big]}},
+ [{integer,Sz},{integer,0}]},
+ [I|Acc];
+bs_split_int_1(N, ByteSz, Sz, Fail, Acc) when Sz > 0 ->
+ Mask = (1 bsl ByteSz) - 1,
+ I = {bs_put,Fail,{bs_put_integer,1,{field_flags,[big]}},
+ [{integer,ByteSz},{integer,N band Mask}]},
+ bs_split_int_1(N bsr ByteSz, 8, Sz-ByteSz, Fail, [I|Acc]);
+bs_split_int_1(_, _, _, _, Acc) -> Acc.
+
+%%%
+%%% Optimization of bit syntax matching: get rid
+%%% of redundant bs_restore2/2 instructions across select_val
+%%% instructions, as well as a few other simple peep-hole
+%%% optimizations.
+%%%
+
+bsm_opt(Is0, Lc0) ->
+ {Is1,D0,Lc} = bsm_scan(Is0, [], Lc0, []),
+ Is2 = case D0 of
+ [] ->
+ %% No bit syntax matching in this function.
+ Is1;
+ [_|_] ->
+ %% Optimize the bit syntax matching.
+ D = gb_trees:from_orddict(orddict:from_list(D0)),
+ bsm_reroute(Is1, D, none, [])
+ end,
+ Is = beam_clean:bs_clean_saves(Is2),
+ {bsm_opt_2(Is, []),Lc}.
+
+bsm_scan([{label,L}=Lbl,{bs_restore2,_,Save}=R|Is], D0, Lc, Acc0) ->
+ D = [{{L,Save},Lc}|D0],
+ Acc = [{label,Lc},R,Lbl|Acc0],
+ bsm_scan(Is, D, Lc+1, Acc);
+bsm_scan([I|Is], D, Lc, Acc) ->
+ bsm_scan(Is, D, Lc, [I|Acc]);
+bsm_scan([], D, Lc, Acc) ->
+ {reverse(Acc),D,Lc}.
+
+bsm_reroute([{bs_save2,Reg,Save}=I|Is], D, _, Acc) ->
+ bsm_reroute(Is, D, {Reg,Save}, [I|Acc]);
+bsm_reroute([{bs_restore2,Reg,Save}=I|Is], D, _, Acc) ->
+ bsm_reroute(Is, D, {Reg,Save}, [I|Acc]);
+bsm_reroute([{label,_}=I|Is], D, S, Acc) ->
+ bsm_reroute(Is, D, S, [I|Acc]);
+bsm_reroute([{select,select_val,Reg,F0,Lbls0}|Is], D, {_,Save}=S, Acc0) ->
+ [F|Lbls] = bsm_subst_labels([F0|Lbls0], Save, D),
+ Acc = [{select,select_val,Reg,F,Lbls}|Acc0],
+ bsm_reroute(Is, D, S, Acc);
+bsm_reroute([{test,TestOp,F0,TestArgs}=I|Is], D, {_,Save}=S, Acc0) ->
+ F = bsm_subst_label(F0, Save, D),
+ Acc = [{test,TestOp,F,TestArgs}|Acc0],
+ case bsm_not_bs_test(I) of
+ true ->
+ %% The test instruction will not update the bit offset for
+ %% the binary being matched. Therefore the save position
+ %% can be kept.
+ bsm_reroute(Is, D, S, Acc);
+ false ->
+ %% The test instruction might update the bit offset. Kill
+ %% our remembered Save position.
+ bsm_reroute(Is, D, none, Acc)
+ end;
+bsm_reroute([{test,TestOp,F0,Live,TestArgs,Dst}|Is], D, {_,Save}, Acc0) ->
+ F = bsm_subst_label(F0, Save, D),
+ Acc = [{test,TestOp,F,Live,TestArgs,Dst}|Acc0],
+ %% The test instruction will update the bit offset. Kill our
+ %% remembered Save position.
+ bsm_reroute(Is, D, none, Acc);
+bsm_reroute([{block,[{set,[],[],{alloc,_,_}}]}=Bl,
+ {bs_context_to_binary,_}=I|Is], D, S, Acc) ->
+ %% To help further bit syntax optimizations.
+ bsm_reroute([I,Bl|Is], D, S, Acc);
+bsm_reroute([I|Is], D, _, Acc) ->
+ bsm_reroute(Is, D, none, [I|Acc]);
+bsm_reroute([], _, _, Acc) -> reverse(Acc).
+
+bsm_opt_2([{test,bs_test_tail2,F,[Ctx,Bits]}|Is],
+ [{test,bs_skip_bits2,F,[Ctx,{integer,I},Unit,_Flags]}|Acc]) ->
+ bsm_opt_2(Is, [{test,bs_test_tail2,F,[Ctx,Bits+I*Unit]}|Acc]);
+bsm_opt_2([{test,bs_skip_bits2,F,[Ctx,{integer,I1},Unit1,_]}|Is],
+ [{test,bs_skip_bits2,F,[Ctx,{integer,I2},Unit2,Flags]}|Acc]) ->
+ bsm_opt_2(Is, [{test,bs_skip_bits2,F,
+ [Ctx,{integer,I1*Unit1+I2*Unit2},1,Flags]}|Acc]);
+bsm_opt_2([I|Is], Acc) ->
+ bsm_opt_2(Is, [I|Acc]);
+bsm_opt_2([], Acc) -> reverse(Acc).
+
+%% bsm_not_bs_test({test,Name,_,Operands}) -> true|false.
+%% Test whether is the test is a "safe", i.e. does not move the
+%% bit offset for a binary.
+%%
+%% 'true' means that the test is safe, 'false' that we don't know or
+%% that the test moves the offset (e.g. bs_get_integer2).
+
+bsm_not_bs_test({test,bs_test_tail2,_,[_,_]}) -> true;
+bsm_not_bs_test(Test) -> beam_utils:is_pure_test(Test).
+
+bsm_subst_labels(Fs, Save, D) ->
+ bsm_subst_labels_1(Fs, Save, D, []).
+
+bsm_subst_labels_1([F|Fs], Save, D, Acc) ->
+ bsm_subst_labels_1(Fs, Save, D, [bsm_subst_label(F, Save, D)|Acc]);
+bsm_subst_labels_1([], _, _, Acc) ->
+ reverse(Acc).
+
+bsm_subst_label({f,Lbl0}=F, Save, D) ->
+ case gb_trees:lookup({Lbl0,Save}, D) of
+ {value,Lbl} -> {f,Lbl};
+ none -> F
+ end;
+bsm_subst_label(Other, _, _) -> Other.
diff --git a/lib/compiler/src/beam_bsm.erl b/lib/compiler/src/beam_bsm.erl
index fdfcb08125..286307a4be 100644
--- a/lib/compiler/src/beam_bsm.erl
+++ b/lib/compiler/src/beam_bsm.erl
@@ -1,18 +1,19 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2007-2013. All Rights Reserved.
+%% Copyright Ericsson AB 2007-2016. All Rights Reserved.
%%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
%%
%% %CopyrightEnd%
%%
@@ -20,7 +21,7 @@
-module(beam_bsm).
-export([module/2,format_error/1]).
--import(lists, [member/2,foldl/3,reverse/1,sort/1,all/2,dropwhile/2]).
+-import(lists, [member/2,foldl/3,reverse/1,sort/1,all/2]).
%%%
%%% We optimize bit syntax matching where the tail end of a binary is
@@ -209,6 +210,7 @@ btb_reaches_match_2([{call,Arity,{f,Lbl}}|Is], Regs, D) ->
btb_reaches_match_2([{apply,Arity}|Is], Regs, D) ->
btb_call(Arity+2, apply, Regs, Is, D);
btb_reaches_match_2([{call_fun,Live}=I|Is], Regs, D) ->
+ btb_ensure_not_used([{x,Live}], I, Regs),
btb_call(Live, I, Regs, Is, D);
btb_reaches_match_2([{make_fun2,_,_,_,Live}|Is], Regs, D) ->
btb_call(Live, make_fun2, Regs, Is, D);
@@ -241,6 +243,12 @@ btb_reaches_match_2([{bif,_,{f,F},Ss,Dst}=I|Is], Regs0, D0) ->
Regs = btb_kill([Dst], Regs0),
D = btb_follow_branch(F, Regs, D0),
btb_reaches_match_1(Is, Regs, D);
+btb_reaches_match_2([{get_map_elements,{f,F},Src,{list,Ls}}=I|Is], Regs0, D0) ->
+ {Ss,Ds} = beam_utils:split_even(Ls),
+ btb_ensure_not_used([Src|Ss], I, Regs0),
+ Regs = btb_kill(Ds, Regs0),
+ D = btb_follow_branch(F, Regs, D0),
+ btb_reaches_match_1(Is, Regs, D);
btb_reaches_match_2([{test,bs_start_match2,{f,F},Live,[Ctx,_],Ctx}=I|Is],
Regs0, D0) ->
CtxRegs = btb_context_regs(Regs0),
@@ -413,7 +421,8 @@ btb_follow_branches([], _, D) -> D.
btb_follow_branch(0, _Regs, D) -> D;
btb_follow_branch(Lbl, Regs, #btb{ok_br=Br0,index=Li}=D) ->
- case gb_sets:is_member(Lbl, Br0) of
+ Key = {Lbl,Regs},
+ case gb_sets:is_member(Key, Br0) of
true ->
%% We have already followed this branch and it was OK.
D;
@@ -424,7 +433,7 @@ btb_follow_branch(Lbl, Regs, #btb{ok_br=Br0,index=Li}=D) ->
btb_reaches_match_1(Is, Regs, D),
%% Since we got back, this branch is OK.
- D#btb{ok_br=gb_sets:insert(Lbl, Br),must_not_save=MustNotSave,
+ D#btb{ok_br=gb_sets:insert(Key, Br),must_not_save=MustNotSave,
must_save=MustSave}
end.
@@ -541,16 +550,13 @@ btb_context_regs_1(Regs, N, Tag, Acc) ->
%% a binary. MustSave is true if the function may pass the match
%% context to the bs_context_to_binary instruction (in which case
%% the current position in the binary must have saved into the
-%% start position using "bs_save_2 Ctx start".
+%% start position using "bs_save_2 Ctx start").
btb_index(Fs) ->
btb_index_1(Fs, []).
btb_index_1([{function,_,_,Entry,Is0}|Fs], Acc0) ->
- [{label,Entry}|Is] =
- dropwhile(fun({label,L}) when L =:= Entry -> false;
- (_) -> true
- end, Is0),
+ Is = drop_to_label(Is0, Entry),
Acc = btb_index_2(Is, Entry, false, Acc0),
btb_index_1(Fs, Acc);
btb_index_1([], Acc) -> gb_trees:from_orddict(sort(Acc)).
@@ -565,6 +571,9 @@ btb_index_2(Is0, Entry, _, Acc) ->
throw:none -> Acc
end.
+drop_to_label([{label,L}|Is], L) -> Is;
+drop_to_label([_|Is], L) -> drop_to_label(Is, L).
+
btb_index_find_start_match([{test,_,{f,F},_},{bs_context_to_binary,_}|Is]) ->
btb_index_find_label(Is, F);
btb_index_find_start_match(_) ->
@@ -614,7 +623,7 @@ collect_warnings_instr([_|Is], D, Acc) ->
collect_warnings_instr([], _, Acc) -> Acc.
add_warning(Term, Anno, Ws) ->
- Line = abs(get_line(Anno)),
+ Line = get_line(Anno),
File = get_file(Anno),
[{File,[{Line,?MODULE,Term}]}|Ws].
diff --git a/lib/compiler/src/beam_clean.erl b/lib/compiler/src/beam_clean.erl
index e208ffec1f..10805a3c36 100644
--- a/lib/compiler/src/beam_clean.erl
+++ b/lib/compiler/src/beam_clean.erl
@@ -1,18 +1,19 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2000-2013. All Rights Reserved.
+%% Copyright Ericsson AB 2000-2016. All Rights Reserved.
%%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
%%
%% %CopyrightEnd%
%%
@@ -86,7 +87,7 @@ add_to_work_list(F, {Fs,Used}=Sets) ->
false -> {[F|Fs],sets:add_element(F, Used)}
end.
-
+
%%%
%%% Coalesce adjacent labels. Renumber all labels to eliminate gaps.
%%% This cleanup will slightly reduce file size and slightly speed up loading.
@@ -140,7 +141,7 @@ renumber_labels([{bif,is_record,{f,_},
renumber_labels(Is, Acc, St);
renumber_labels([{test,is_record,{f,_}=Fail,
[Term,{atom,Tag}=TagAtom,{integer,Arity}]}|Is0], Acc, St) ->
- Tmp = {x,1023},
+ Tmp = {x,1022},
Is = case is_record_tuple(Term, Tag, Arity) of
yes ->
Is0;
@@ -184,30 +185,16 @@ function_replace([{function,Name,Arity,Entry,Asm0}|Fs], Dict, Acc) ->
function_replace(Fs, Dict, [{function,Name,Arity,Entry,Asm}|Acc]);
function_replace([], _, Acc) -> Acc.
-replace([{test,bs_match_string=Op,{f,Lbl},[Ctx,Bin0]}|Is], Acc, D) ->
- Bits = bit_size(Bin0),
- Bin = case Bits rem 8 of
- 0 -> Bin0;
- Rem -> <<Bin0/bitstring,0:(8-Rem)>>
- end,
- I = {test,Op,{f,label(Lbl, D)},[Ctx,Bits,{string,binary_to_list(Bin)}]},
- replace(Is, [I|Acc], D);
replace([{test,Test,{f,Lbl},Ops}|Is], Acc, D) ->
replace(Is, [{test,Test,{f,label(Lbl, D)},Ops}|Acc], D);
replace([{test,Test,{f,Lbl},Live,Ops,Dst}|Is], Acc, D) ->
replace(Is, [{test,Test,{f,label(Lbl, D)},Live,Ops,Dst}|Acc], D);
replace([{select,I,R,{f,Fail0},Vls0}|Is], Acc, D) ->
- Vls1 = map(fun ({f,L}) -> {f,label(L, D)};
- (Other) -> Other end, Vls0),
+ Vls = map(fun ({f,L}) -> {f,label(L, D)};
+ (Other) -> Other
+ end, Vls0),
Fail = label(Fail0, D),
- case redundant_values(Vls1, Fail, []) of
- [] ->
- %% Oops, no choices left. The loader will not accept that.
- %% Convert to a plain jump.
- replace(Is, [{jump,{f,Fail}}|Acc], D);
- Vls ->
- replace(Is, [{select,I,R,{f,Fail},Vls}|Acc], D)
- end;
+ replace(Is, [{select,I,R,{f,Fail},Vls}|Acc], D);
replace([{'try',R,{f,Lbl}}|Is], Acc, D) ->
replace(Is, [{'try',R,{f,label(Lbl, D)}}|Acc], D);
replace([{'catch',R,{f,Lbl}}|Is], Acc, D) ->
@@ -234,6 +221,11 @@ replace([{bs_init,{f,Lbl},Info,Live,Ss,Dst}|Is], Acc, D) when Lbl =/= 0 ->
replace(Is, [{bs_init,{f,label(Lbl, D)},Info,Live,Ss,Dst}|Acc], D);
replace([{bs_put,{f,Lbl},Info,Ss}|Is], Acc, D) when Lbl =/= 0 ->
replace(Is, [{bs_put,{f,label(Lbl, D)},Info,Ss}|Acc], D);
+replace([{put_map=I,{f,Lbl},Op,Src,Dst,Live,List}|Is], Acc, D)
+ when Lbl =/= 0 ->
+ replace(Is, [{I,{f,label(Lbl, D)},Op,Src,Dst,Live,List}|Acc], D);
+replace([{get_map_elements=I,{f,Lbl},Src,List}|Is], Acc, D) when Lbl =/= 0 ->
+ replace(Is, [{I,{f,label(Lbl, D)},Src,List}|Acc], D);
replace([I|Is], Acc, D) ->
replace(Is, [I|Acc], D);
replace([], Acc, _) -> Acc.
@@ -243,12 +235,6 @@ label(Old, D) ->
{value,Val} -> Val;
none -> throw({error,{undefined_label,Old}})
end.
-
-redundant_values([_,{f,Fail}|Vls], Fail, Acc) ->
- redundant_values(Vls, Fail, Acc);
-redundant_values([Val,Lbl|Vls], Fail, Acc) ->
- redundant_values(Vls, Fail, [Lbl,Val|Acc]);
-redundant_values([], _, Acc) -> reverse(Acc).
%%%
%%% Final fixup of bs_start_match2/5,bs_save2/bs_restore2 instructions for
diff --git a/lib/compiler/src/beam_dead.erl b/lib/compiler/src/beam_dead.erl
index b15adfa889..b01f58f683 100644
--- a/lib/compiler/src/beam_dead.erl
+++ b/lib/compiler/src/beam_dead.erl
@@ -1,18 +1,19 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2002-2013. All Rights Reserved.
+%% Copyright Ericsson AB 2002-2016. All Rights Reserved.
%%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
%%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
%%
%% %CopyrightEnd%
%%
@@ -21,112 +22,10 @@
-export([module/2]).
-%%% The following optimisations are done:
-%%%
-%%% (1) In this code
-%%%
-%%% move DeadValue {x,0}
-%%% jump L2
-%%% .
-%%% .
-%%% .
-%%% L2: move Anything {x,0}
-%%% .
-%%% .
-%%% .
-%%%
-%%% the first assignment to {x,0} has no effect (is dead),
-%%% so it can be removed. Besides removing a move instruction,
-%%% if the move was preceeded by a label, the resulting code
-%%% will look this
-%%%
-%%% L1: jump L2
-%%% .
-%%% .
-%%% .
-%%% L2: move Anything {x,0}
-%%% .
-%%% .
-%%% .
-%%%
-%%% which can be further optimized by the jump optimizer (beam_jump).
-%%%
-%%% (2) In this code
-%%%
-%%% L1: move AtomLiteral {x,0}
-%%% jump L2
-%%% .
-%%% .
-%%% .
-%%% L2: test is_atom FailLabel {x,0}
-%%% select_val {x,0}, FailLabel [... AtomLiteral => L3...]
-%%% .
-%%% .
-%%% .
-%%% L3: ...
-%%%
-%%% FailLabel: ...
-%%%
-%%% the first code fragment can be changed to
-%%%
-%%% L1: move AtomLiteral {x,0}
-%%% jump L3
-%%%
-%%% If the literal is not included in the table of literals in the
-%%% select_val instruction, the first code fragment will instead be
-%%% rewritten as:
-%%%
-%%% L1: move AtomLiteral {x,0}
-%%% jump FailLabel
-%%%
-%%% The move instruction will be removed by optimization (1) above,
-%%% if the code following the L3 label overwrites {x,0}.
-%%%
-%%% The code following the L2 label will be kept, but it will be removed later
-%%% by the jump optimizer.
-%%%
-%%% (3) In this code
-%%%
-%%% test is_eq_exact ALabel Src Dst
-%%% move Src Dst
-%%%
-%%% the move instruction can be removed.
-%%% Same thing for
-%%%
-%%% test is_nil ALabel Dst
-%%% move [] Dst
-%%%
-%%%
-%%% (4) In this code
-%%%
-%%% select_val {x,Reg}, ALabel [... Literal => L1...]
-%%% .
-%%% .
-%%% .
-%%% L1: move Literal {x,Reg}
-%%%
-%%% we can remove the move instruction.
-%%%
-%%% (5) In the following code
-%%%
-%%% bif '=:=' Fail Src1 Src2 {x,0}
-%%% jump L1
-%%% .
-%%% .
-%%% .
-%%% L1: select_val {x,0}, ALabel [... true => L2..., ...false => L3...]
-%%% .
-%%% .
-%%% .
-%%% L2: .... L3: ....
-%%%
-%%% the first two instructions can be replaced with
-%%%
-%%% test is_eq_exact L3 Src1 Src2
-%%% jump L2
-%%%
-%%% provided that {x,0} is killed at both L2 and L3.
-%%%
+%%% Dead code is code that is executed but has no effect. This
+%%% optimization pass either removes dead code or jumps around it,
+%%% potentially making it unreachable and a target for the
+%%% the beam_jump pass.
-import(lists, [mapfoldl/3,reverse/1]).
@@ -173,12 +72,39 @@ move_move_into_block([I|Is], Acc) ->
move_move_into_block([], Acc) -> reverse(Acc).
%%%
-%%% Scan instructions in execution order and remove dead code.
+%%% Scan instructions in execution order and remove redundant 'move'
+%%% instructions. 'move' instructions are redundant if we know that
+%%% the register already contains the value being assigned, as in the
+%%% following code:
+%%%
+%%% test is_eq_exact SomeLabel Src Dst
+%%% move Src Dst
+%%%
+%%% or in:
+%%%
+%%% test is_nil SomeLabel Dst
+%%% move nil Dst
+%%%
+%%% or in:
+%%%
+%%% select_val Register FailLabel [... Literal => L1...]
+%%% .
+%%% .
+%%% .
+%%% L1: move Literal Register
+%%%
+%%% Also add extra labels to help the second backward pass.
%%%
forward(Is, Lc) ->
- forward(Is, gb_trees:empty(), Lc, []).
-
+ forward(Is, #{}, Lc, []).
+
+forward([{move,_,_}=Move|[{label,L}|_]=Is], D, Lc, Acc) ->
+ %% move/2 followed by jump/1 is optimized by backward/3.
+ forward([Move,{jump,{f,L}}|Is], D, Lc, Acc);
+forward([{bif,_,_,_,_}=Bif|[{label,L}|_]=Is], D, Lc, Acc) ->
+ %% bif/4 followed by jump/1 is optimized by backward/3.
+ forward([Bif,{jump,{f,L}}|Is], D, Lc, Acc);
forward([{block,[]}|Is], D, Lc, Acc) ->
%% Empty blocks can prevent optimizations.
forward(Is, D, Lc, Acc);
@@ -190,21 +116,24 @@ forward([{label,Lbl}=LblI,{block,[{set,[Dst],[Lit],move}|BlkIs]}=Blk|Is], D, Lc,
%% cannot be reached in any other way than through the select_val/3
%% instruction (i.e. there can be no fallthrough to such label and
%% it cannot be referenced by, for example, a jump/1 instruction).
- Block = case gb_trees:lookup({Lbl,Dst}, D) of
- {value,Lit} -> {block,BlkIs}; %Safe to remove move instruction.
- _ -> Blk %Must keep move instruction.
- end,
+ Key = {Lbl,Dst},
+ Block = case D of
+ #{Key := Lit} -> {block,BlkIs}; %Safe to remove move instruction.
+ _ -> Blk %Must keep move instruction.
+ end,
forward([Block|Is], D, Lc, [LblI|Acc]);
forward([{label,Lbl}=LblI|[{move,Lit,Dst}|Is1]=Is0], D, Lc, Acc) ->
%% Assumption: The target labels in a select_val/3 instruction
%% cannot be reached in any other way than through the select_val/3
%% instruction (i.e. there can be no fallthrough to such label and
%% it cannot be referenced by, for example, a jump/1 instruction).
- Is = case gb_trees:lookup({Lbl,Dst}, D) of
- {value,Lit} -> Is1; %Safe to remove move instruction.
- _ -> Is0 %Keep move instruction.
+ Is = case maps:find({Lbl,Dst}, D) of
+ {ok,Lit} -> Is1; %Safe to remove move instruction.
+ _ -> Is0 %Keep move instruction.
end,
forward(Is, D, Lc, [LblI|Acc]);
+forward([{test,is_eq_exact,_,[Same,Same]}|Is], D, Lc, Acc) ->
+ forward(Is, D, Lc, Acc);
forward([{test,is_eq_exact,_,[Dst,Src]}=I,
{block,[{set,[Dst],[Src],move}|Bl]}|Is], D, Lc, Acc) ->
forward([I,{block,Bl}|Is], D, Lc, Acc);
@@ -215,15 +144,13 @@ forward([{test,is_eq_exact,_,[Dst,Src]}=I,{move,Src,Dst}|Is], D, Lc, Acc) ->
forward([I|Is], D, Lc, Acc);
forward([{test,is_nil,_,[Dst]}=I,{move,nil,Dst}|Is], D, Lc, Acc) ->
forward([I|Is], D, Lc, Acc);
-forward([{test,is_eq_exact,_,_}=I|Is], D, Lc, Acc) ->
- case Is of
- [{label,_}|_] -> forward(Is, D, Lc, [I|Acc]);
- _ -> forward(Is, D, Lc+1, [{label,Lc},I|Acc])
- end;
-forward([{test,is_ne_exact,_,_}=I|Is], D, Lc, Acc) ->
- case Is of
- [{label,_}|_] -> forward(Is, D, Lc, [I|Acc]);
- _ -> forward(Is, D, Lc+1, [{label,Lc},I|Acc])
+forward([{test,_,_,_}=I|Is]=Is0, D, Lc, Acc) ->
+ %% Help the second, backward pass to by inserting labels after
+ %% relational operators so that they can be skipped if they are
+ %% known to be true.
+ case useful_to_insert_label(Is0) of
+ false -> forward(Is, D, Lc, [I|Acc]);
+ true -> forward(Is, D, Lc+1, [{label,Lc},I|Acc])
end;
forward([I|Is], D, Lc, Acc) ->
forward(Is, D, Lc, [I|Acc]);
@@ -231,17 +158,57 @@ forward([], _, Lc, Acc) -> {Acc,Lc}.
update_value_dict([Lit,{f,Lbl}|T], Reg, D0) ->
Key = {Lbl,Reg},
- D = case gb_trees:lookup(Key, D0) of
- none -> gb_trees:insert(Key, Lit, D0); %New.
- {value,inconsistent} -> D0; %Inconsistent.
- {value,_} -> gb_trees:update(Key, inconsistent, D0)
- end,
+ D = case D0 of
+ #{Key := inconsistent} -> D0;
+ #{Key := _} -> D0#{Key := inconsistent};
+ _ -> D0#{Key => Lit}
+ end,
update_value_dict(T, Reg, D);
update_value_dict([], _, D) -> D.
+useful_to_insert_label([_,{label,_}|_]) ->
+ false;
+useful_to_insert_label([{test,Op,_,_}|_]) ->
+ case Op of
+ is_lt -> true;
+ is_ge -> true;
+ is_eq_exact -> true;
+ is_ne_exact -> true;
+ _ -> false
+ end.
+
+%%%
+%%% Scan instructions in reverse execution order and try to
+%%% shortcut branch instructions.
+%%%
+%%% For example, in this code:
+%%%
+%%% move Literal Register
+%%% jump L1
+%%% .
+%%% .
+%%% .
+%%% L1: test is_{integer,atom} FailLabel Register
+%%% select_val {x,0} FailLabel [... Literal => L2...]
+%%% .
+%%% .
+%%% .
+%%% L2: ...
%%%
-%%% Scan instructions in reverse execution order and remove dead code.
+%%% the 'selectval' instruction will always transfer control to L2,
+%%% so we can just as well jump to L2 directly by rewriting the
+%%% first part of the sequence like this:
%%%
+%%% move Literal Register
+%%% jump L2
+%%%
+%%% If register Register is killed at label L2, we can remove the
+%%% 'move' instruction, leaving just the 'jump' instruction:
+%%%
+%%% jump L2
+%%%
+%%% These transformations may leave parts of the code unreachable.
+%%% The beam_jump pass will remove the unreachable code.
backward(Is, D) ->
backward(Is, D, []).
@@ -272,22 +239,30 @@ backward([{test,is_eq_exact,Fail,[Dst,{integer,Arity}]}=I|
backward([{label,Lbl}=L|Is], D, Acc) ->
backward(Is, beam_utils:index_label(Lbl, Acc, D), [L|Acc]);
backward([{select,select_val,Reg,{f,Fail0},List0}|Is], D, Acc) ->
- List = shortcut_select_list(List0, Reg, D, []),
+ List1 = shortcut_select_list(List0, Reg, D, []),
Fail1 = shortcut_label(Fail0, D),
Fail = shortcut_bs_test(Fail1, Is, D),
- Sel = {select,select_val,Reg,{f,Fail},List},
- backward(Is, D, [Sel|Acc]);
-backward([{jump,{f,To0}},{move,Src,Reg}=Move0|Is], D, Acc) ->
- {To,Move} = case Src of
- {atom,Val0} ->
- To1 = shortcut_select_label(To0, Reg, Val0, D),
- {To2,Val} = shortcut_boolean_label(To1, Reg, Val0, D),
- {To2,{move,{atom,Val},Reg}};
- _ ->
- {shortcut_label(To0, D),Move0}
- end,
+ List = prune_redundant(List1, Fail),
+ case List of
+ [] ->
+ Jump = {jump,{f,Fail}},
+ backward([Jump|Is], D, Acc);
+ [V,F] ->
+ Test = {test,is_eq_exact,{f,Fail},[Reg,V]},
+ Jump = {jump,F},
+ backward([Jump,Test|Is], D, Acc);
+ [{atom,B1},F,{atom,B2},F] when B1 =:= not B2 ->
+ Test = {test,is_boolean,{f,Fail},[Reg]},
+ Jump = {jump,F},
+ backward([Jump,Test|Is], D, Acc);
+ [_|_] ->
+ Sel = {select,select_val,Reg,{f,Fail},List},
+ backward(Is, D, [Sel|Acc])
+ end;
+backward([{jump,{f,To0}},{move,Src,Reg}=Move|Is], D, Acc) ->
+ To = shortcut_select_label(To0, Reg, Src, D),
Jump = {jump,{f,To}},
- case beam_utils:is_killed_at(Reg, To, D) of
+ case is_killed_at(Reg, To, D) of
false -> backward([Move|Is], D, [Jump|Acc]);
true -> backward([Jump|Is], D, Acc)
end;
@@ -297,38 +272,69 @@ backward([{jump,{f,To}}=J|[{bif,Op,_,Ops,Reg}|Is]=Is0], D, Acc) ->
catch
throw:not_possible -> backward(Is0, D, [J|Acc])
end;
+backward([{test,bs_start_match2,F,Live,[R,_]=Args,Ctxt}|Is], D,
+ [{test,bs_match_string,F,[Ctxt,Bs]},
+ {test,bs_test_tail2,F,[Ctxt,0]}|Acc0]=Acc) ->
+ {f,To0} = F,
+ To = shortcut_bs_start_match(To0, R, D),
+ case beam_utils:is_killed(Ctxt, Acc0, D) of
+ true ->
+ Eq = {test,is_eq_exact,{f,To},[R,{literal,Bs}]},
+ backward(Is, D, [Eq|Acc0]);
+ false ->
+ I = {test,bs_start_match2,{f,To},Live,Args,Ctxt},
+ backward(Is, D, [I|Acc])
+ end;
backward([{test,bs_start_match2,{f,To0},Live,[Src|_]=Info,Dst}|Is], D, Acc) ->
To = shortcut_bs_start_match(To0, Src, D),
I = {test,bs_start_match2,{f,To},Live,Info,Dst},
backward(Is, D, [I|Acc]);
-backward([{test,is_eq_exact,{f,To0},[Reg,{atom,Val}]=Ops}|Is], D, Acc) ->
- To1 = shortcut_bs_test(To0, Is, D),
- To = shortcut_fail_label(To1, Reg, Val, D),
- I = combine_eqs(To, Ops, D, Acc),
- backward(Is, D, [I|Acc]);
backward([{test,Op,{f,To0},Ops0}|Is], D, Acc) ->
To1 = shortcut_bs_test(To0, Is, D),
To2 = shortcut_label(To1, D),
+ To3 = shortcut_rel_op(To2, Op, Ops0, D),
+
%% Try to shortcut a repeated test:
%%
%% test Op {f,Fail1} Operands test Op {f,Fail2} Operands
%% . . . ==> ...
%% Fail1: test Op {f,Fail2} Operands Fail1: test Op {f,Fail2} Operands
%%
- To = case beam_utils:code_at(To2, D) of
- [{test,Op,{f,To3},Ops}|_] ->
+ To = case beam_utils:code_at(To3, D) of
+ [{test,Op,{f,To4},Ops}|_] ->
case equal_ops(Ops0, Ops) of
- true -> To3;
- false -> To2
+ true -> To4;
+ false -> To3
end;
_Code ->
- To2
+ To3
end,
I = case Op of
is_eq_exact -> combine_eqs(To, Ops0, D, Acc);
_ -> {test,Op,{f,To},Ops0}
end,
- backward(Is, D, [I|Acc]);
+ case {I,Acc} of
+ {{test,is_atom,Fail,Ops0},[{test,is_boolean,Fail,Ops0}|_]} ->
+ %% An is_atom test before an is_boolean test (with the
+ %% same failure label) is redundant.
+ backward(Is, D, Acc);
+ {{test,is_atom,Fail,[R]},
+ [{test,is_eq_exact,Fail,[R,{atom,_}]}|_]} ->
+ %% An is_atom test before a comparison with an atom (with
+ %% the same failure label) is redundant.
+ backward(Is, D, Acc);
+ {{test,is_integer,Fail,[R]},
+ [{test,is_eq_exact,Fail,[R,{integer,_}]}|_]} ->
+ %% An is_integer test before a comparison with an integer
+ %% (with the same failure label) is redundant.
+ backward(Is, D, Acc);
+ {{test,_,_,_},_} ->
+ %% Still a test instruction. Done.
+ backward(Is, D, [I|Acc]);
+ {_,_} ->
+ %% Rewritten to a select_val. Rescan.
+ backward([I|Is], D, Acc)
+ end;
backward([{test,Op,{f,To0},Live,Ops0,Dst}|Is], D, Acc) ->
To1 = shortcut_bs_test(To0, Is, D),
To2 = shortcut_label(To1, D),
@@ -367,8 +373,8 @@ equal_ops([Op|T0], [Op|T1]) ->
equal_ops([], []) -> true;
equal_ops(_, _) -> false.
-shortcut_select_list([{_,Val}=Lit,{f,To0}|T], Reg, D, Acc) ->
- To = shortcut_select_label(To0, Reg, Val, D),
+shortcut_select_list([Lit,{f,To0}|T], Reg, D, Acc) ->
+ To = shortcut_select_label(To0, Reg, Lit, D),
shortcut_select_list(T, Reg, D, [{f,To},Lit|Acc]);
shortcut_select_list([], _, _, Acc) -> reverse(Acc).
@@ -378,58 +384,35 @@ shortcut_label(To0, D) ->
_ -> To0
end.
-shortcut_select_label(To0, Reg, Val, D) ->
- case beam_utils:code_at(To0, D) of
- [{jump,{f,To}}|_] ->
- shortcut_select_label(To, Reg, Val, D);
- [{test,is_atom,_,[Reg]},{select,select_val,Reg,{f,Fail},Map}|_] ->
- To = find_select_val(Map, Val, Fail),
- shortcut_select_label(To, Reg, Val, D);
- [{test,is_eq_exact,{f,_},[Reg,{atom,Val}]},{label,To}|_] when is_atom(Val) ->
- shortcut_select_label(To, Reg, Val, D);
- [{test,is_eq_exact,{f,_},[Reg,{atom,Val}]},{jump,{f,To}}|_] when is_atom(Val) ->
- shortcut_select_label(To, Reg, Val, D);
- [{test,is_eq_exact,{f,To},[Reg,{atom,AnotherVal}]}|_]
- when is_atom(Val), Val =/= AnotherVal ->
- shortcut_select_label(To, Reg, Val, D);
- [{test,is_ne_exact,{f,To},[Reg,{atom,Val}]}|_] when is_atom(Val) ->
- shortcut_select_label(To, Reg, Val, D);
- [{test,is_ne_exact,{f,_},[Reg,{atom,_}]},{label,To}|_] when is_atom(Val) ->
- shortcut_select_label(To, Reg, Val, D);
- [{test,is_tuple,{f,To},[Reg]}|_] when is_atom(Val) ->
- shortcut_select_label(To, Reg, Val, D);
- _ ->
- To0
- end.
+shortcut_select_label(To, Reg, Lit, D) ->
+ shortcut_rel_op(To, is_ne_exact, [Reg,Lit], D).
-shortcut_fail_label(To0, Reg, Val, D) ->
- case beam_utils:code_at(To0, D) of
- [{jump,{f,To}}|_] ->
- shortcut_fail_label(To, Reg, Val, D);
- [{test,is_eq_exact,{f,To},[Reg,{atom,Val}]}|_] when is_atom(Val) ->
- shortcut_fail_label(To, Reg, Val, D);
- _ ->
- To0
- end.
+prune_redundant([_,{f,Fail}|T], Fail) ->
+ prune_redundant(T, Fail);
+prune_redundant([V,F|T], Fail) ->
+ [V,F|prune_redundant(T, Fail)];
+prune_redundant([], _) -> [].
-shortcut_boolean_label(To0, Reg, Bool0, D) when is_boolean(Bool0) ->
- case beam_utils:code_at(To0, D) of
- [{line,_},{bif,'not',_,[Reg],Reg},{jump,{f,To}}|_] ->
- Bool = not Bool0,
- {shortcut_select_label(To, Reg, Bool, D),Bool};
- _ ->
- {To0,Bool0}
- end;
-shortcut_boolean_label(To, _, Bool, _) -> {To,Bool}.
-
-find_select_val([{_,Val},{f,To}|_], Val, _) -> To;
-find_select_val([{_,_}, {f,_}|T], Val, Fail) ->
- find_select_val(T, Val, Fail);
-find_select_val([], _, Fail) -> Fail.
+%% Replace a comparison operator with a test instruction and a jump.
+%% For example, if we have this code:
+%%
+%% bif '=:=' Fail Src1 Src2 {x,0}
+%% jump L1
+%% .
+%% .
+%% .
+%% L1: select_val {x,0} FailLabel [... true => L2..., ...false => L3...]
+%%
+%% the first two instructions can be replaced with
+%%
+%% test is_eq_exact L3 Src1 Src2
+%% jump L2
+%%
+%% provided that {x,0} is killed at both L2 and L3.
replace_comp_op(To, Reg, Op, Ops, D) ->
- False = comp_op_find_shortcut(To, Reg, false, D),
- True = comp_op_find_shortcut(To, Reg, true, D),
+ False = comp_op_find_shortcut(To, Reg, {atom,false}, D),
+ True = comp_op_find_shortcut(To, Reg, {atom,true}, D),
[bif_to_test(Op, Ops, False),{jump,{f,True}}].
comp_op_find_shortcut(To0, Reg, Val, D) ->
@@ -437,7 +420,7 @@ comp_op_find_shortcut(To0, Reg, Val, D) ->
To0 ->
not_possible();
To ->
- case beam_utils:is_killed_at(Reg, To, D) of
+ case is_killed_at(Reg, To, D) of
false -> not_possible();
true -> To
end
@@ -461,9 +444,9 @@ not_possible() -> throw(not_possible).
%%
%% is_eq_exact F1 Reg Lit1 select_val Reg F2 [ Lit1 L1
%% L1: . Lit2 L2 ]
-%% .
-%% . ==>
-%% .
+%% .
+%% . ==>
+%% .
%% F1: is_eq_exact F2 Reg Lit2 F1: is_eq_exact F2 Reg Lit2
%% L2: .... L2:
%%
@@ -488,31 +471,26 @@ remove_from_list(Lit, [Val,{f,_}=Fail|T]) ->
[Val,Fail|remove_from_list(Lit, T)];
remove_from_list(_, []) -> [].
-%% shortcut_bs_test(TargetLabel, [Instruction], D) -> TargetLabel'
-%% Try to shortcut the failure label for a bit syntax matching.
-%% We know that the binary contains at least Bits bits after
-%% the latest save point.
+%% shortcut_bs_test(TargetLabel, ReversedInstructions, D) -> TargetLabel'
+%% Try to shortcut the failure label for bit syntax matching.
shortcut_bs_test(To, Is, D) ->
shortcut_bs_test_1(beam_utils:code_at(To, D), Is, To, D).
-shortcut_bs_test_1([{bs_restore2,Reg,SavePoint}|Is], PrevIs, To, D) ->
- shortcut_bs_test_2(Is, {Reg,SavePoint}, PrevIs, To, D);
-shortcut_bs_test_1([_|_], _, To, _) -> To.
-
-shortcut_bs_test_2([{label,_}|Is], Save, PrevIs, To, D) ->
- shortcut_bs_test_2(Is, Save, PrevIs, To, D);
-shortcut_bs_test_2([{test,bs_test_tail2,{f,To},[_,TailBits]}|_],
- {Reg,_Point} = RP, PrevIs, To0, D) ->
- case count_bits_matched(PrevIs, RP, 0) of
+shortcut_bs_test_1([{bs_restore2,Reg,SavePoint},
+ {label,_},
+ {test,bs_test_tail2,{f,To},[_,TailBits]}|_],
+ PrevIs, To0, D) ->
+ case count_bits_matched(PrevIs, {Reg,SavePoint}, 0) of
Bits when Bits > TailBits ->
%% This instruction will fail. We know because a restore has been
- %% done from the previous point SavePoint in the binary, and we also know
- %% that the binary contains at least Bits bits from SavePoint.
+ %% done from the previous point SavePoint in the binary, and we
+ %% also know that the binary contains at least Bits bits from
+ %% SavePoint.
%%
%% Since we will skip a bs_restore2 if we shortcut to label To,
- %% we must now make sure that code at To does not depend on the position
- %% in the context in any way.
+ %% we must now make sure that code at To does not depend on
+ %% the position in the context in any way.
case shortcut_bs_pos_used(To, Reg, D) of
false -> To;
true -> To0
@@ -520,15 +498,26 @@ shortcut_bs_test_2([{test,bs_test_tail2,{f,To},[_,TailBits]}|_],
_Bits ->
To0
end;
-shortcut_bs_test_2([_|_], _, _, To, _) -> To.
+shortcut_bs_test_1([_|_], _, To, _) -> To.
+%% counts_bits_matched(ReversedInstructions, SavePoint, Bits) -> Bits'
+%% Given a reversed instruction stream, determine the minimum number
+%% of bits that will be matched by bit syntax instructions up to the
+%% given save point.
+
+count_bits_matched([{test,bs_get_utf8,{f,_},_,_,_}|Is], SavePoint, Bits) ->
+ count_bits_matched(Is, SavePoint, Bits+8);
+count_bits_matched([{test,bs_get_utf16,{f,_},_,_,_}|Is], SavePoint, Bits) ->
+ count_bits_matched(Is, SavePoint, Bits+16);
+count_bits_matched([{test,bs_get_utf32,{f,_},_,_,_}|Is], SavePoint, Bits) ->
+ count_bits_matched(Is, SavePoint, Bits+32);
count_bits_matched([{test,_,_,_,[_,Sz,U,{field_flags,_}],_}|Is], SavePoint, Bits) ->
case Sz of
{integer,N} -> count_bits_matched(Is, SavePoint, Bits+N*U);
_ -> count_bits_matched(Is, SavePoint, Bits)
end;
-count_bits_matched([{test,bs_match_string,_,[_,Bits,_]}|Is], SavePoint, Bits0) ->
- count_bits_matched(Is, SavePoint, Bits0+Bits);
+count_bits_matched([{test,bs_match_string,_,[_,Bs]}|Is], SavePoint, Bits) ->
+ count_bits_matched(Is, SavePoint, Bits+bit_size(Bs));
count_bits_matched([{test,_,_,_}|Is], SavePoint, Bits) ->
count_bits_matched(Is, SavePoint, Bits);
count_bits_matched([{bs_save2,Reg,SavePoint}|_], {Reg,SavePoint}, Bits) ->
@@ -545,20 +534,346 @@ shortcut_bs_pos_used_1(Is, Reg, D) ->
not beam_utils:is_killed(Reg, Is, D).
%% shortcut_bs_start_match(TargetLabel, Reg) -> TargetLabel
-%% A failing bs_start_match2 instruction means that the source
-%% cannot be a binary, so there is no need to jump bs_context_to_binary/1
-%% or another bs_start_match2 instruction.
+%% A failing bs_start_match2 instruction means that the source (Reg)
+%% cannot be a binary. That means that it is safe to skip
+%% bs_context_to_binary instructions operating on Reg, and
+%% bs_start_match2 instructions operating on Reg.
shortcut_bs_start_match(To, Reg, D) ->
- shortcut_bs_start_match_1(beam_utils:code_at(To, D), Reg, To).
+ shortcut_bs_start_match_1(beam_utils:code_at(To, D), Reg, To, D).
+
+shortcut_bs_start_match_1([{bs_context_to_binary,Reg}|Is], Reg, To, D) ->
+ shortcut_bs_start_match_1(Is, Reg, To, D);
+shortcut_bs_start_match_1([{jump,{f,To}}|_], Reg, _, D) ->
+ Code = beam_utils:code_at(To, D),
+ shortcut_bs_start_match_1(Code, Reg, To, D);
+shortcut_bs_start_match_1([{test,bs_start_match2,{f,To},_,[Reg|_],_}|_],
+ Reg, _, D) ->
+ Code = beam_utils:code_at(To, D),
+ shortcut_bs_start_match_1(Code, Reg, To, D);
+shortcut_bs_start_match_1(_, _, To, _) ->
+ To.
+
+%% shortcut_rel_op(FailLabel, Operator, [Operand], D) -> FailLabel'
+%% Try to shortcut the given test instruction. Example:
+%%
+%% is_ge L1 {x,0} 48
+%% .
+%% .
+%% .
+%% L1: is_ge L2 {x,0} 65
+%%
+%% The first test instruction can be rewritten to "is_ge L2 {x,0} 48"
+%% since the instruction at L1 will also fail.
+%%
+%% If there are instructions between L1 and the other test instruction
+%% it may still be possible to do the shortcut. For example:
+%%
+%% L1: is_eq_exact L3 {x,0} 92
+%% is_ge L2 {x,0} 65
+%%
+%% Since the first test instruction failed, we know that {x,0} must
+%% be less than 48; therefore, we know that {x,0} cannot be equal to
+%% 92 and the jump to L3 cannot happen.
+
+shortcut_rel_op(To, Op, Ops, D) ->
+ case normalize_op({test,Op,{f,To},Ops}) of
+ {{NormOp,A,B},_} ->
+ Normalized = {negate_op(NormOp),A,B},
+ shortcut_rel_op_fp(To, Normalized, D);
+ {_,_} ->
+ To;
+ error ->
+ To
+ end.
-shortcut_bs_start_match_1([{bs_context_to_binary,Reg}|Is], Reg, To) ->
- shortcut_bs_start_match_2(Is, Reg, To);
-shortcut_bs_start_match_1(_, _, To) -> To.
+shortcut_rel_op_fp(To0, Normalized, D) ->
+ Code = beam_utils:code_at(To0, D),
+ case shortcut_any_label(Code, Normalized) of
+ error ->
+ To0;
+ To ->
+ shortcut_rel_op_fp(To, Normalized, D)
+ end.
-shortcut_bs_start_match_2([{jump,{f,To}}|_], _, _) ->
- To;
-shortcut_bs_start_match_2([{test,bs_start_match2,{f,To},_,[Reg|_],_}|_], Reg, _) ->
- To;
-shortcut_bs_start_match_2(_Is, _Reg, To) ->
- To.
+%% shortcut_any_label([Instruction], PrevCondition) -> FailLabel | error
+%% Using PrevCondition (a previous condition known to be true),
+%% try to shortcut to another failure label.
+
+shortcut_any_label([{jump,{f,Lbl}}|_], _Prev) ->
+ Lbl;
+shortcut_any_label([{label,Lbl}|_], _Prev) ->
+ Lbl;
+shortcut_any_label([{select,select_val,R,{f,Fail},L}|_], Prev) ->
+ shortcut_selectval(L, R, Fail, Prev);
+shortcut_any_label([I|Is], Prev) ->
+ case normalize_op(I) of
+ error ->
+ error;
+ {Normalized,Fail} ->
+ %% We have a relational operator.
+ case will_succeed(Prev, Normalized) of
+ no ->
+ %% This test instruction will always branch
+ %% to Fail.
+ Fail;
+ yes ->
+ %% This test instruction will never branch,
+ %% so we will look at the next instruction.
+ shortcut_any_label(Is, Prev);
+ maybe ->
+ %% May or may not branch. From now on, we can only
+ %% shortcut to the this specific failure label
+ %% Fail.
+ shortcut_specific_label(Is, Fail, Prev)
+ end
+ end.
+
+%% shortcut_specific_label([Instruction], FailLabel, PrevCondition) ->
+%% FailLabel | error
+%% We have previously encountered a test instruction that may or
+%% may not branch to FailLabel. Therefore we are only allowed
+%% to do the shortcut to the same fail label (FailLabel).
+
+shortcut_specific_label([{label,_}|Is], Fail, Prev) ->
+ shortcut_specific_label(Is, Fail, Prev);
+shortcut_specific_label([{select,select_val,R,{f,F},L}|_], Fail, Prev) ->
+ case shortcut_selectval(L, R, F, Prev) of
+ Fail -> Fail;
+ _ -> error
+ end;
+shortcut_specific_label([I|Is], Fail, Prev) ->
+ case normalize_op(I) of
+ error ->
+ error;
+ {Normalized,Fail} ->
+ case will_succeed(Prev, Normalized) of
+ no ->
+ %% Will branch to FailLabel.
+ Fail;
+ yes ->
+ %% Will definitely never branch.
+ shortcut_specific_label(Is, Fail, Prev);
+ maybe ->
+ %% May branch, but still OK since it will branch
+ %% to FailLabel.
+ shortcut_specific_label(Is, Fail, Prev)
+ end;
+ {Normalized,_} ->
+ %% This test instruction will branch to a different
+ %% fail label, if it branches at all.
+ case will_succeed(Prev, Normalized) of
+ yes ->
+ %% Still OK, since the branch will never be
+ %% taken.
+ shortcut_specific_label(Is, Fail, Prev);
+ no ->
+ %% Give up. The branch will definitely be taken
+ %% to a different fail label.
+ error;
+ maybe ->
+ %% Give up. If the branch is taken, it will be
+ %% to a different fail label.
+ error
+ end
+ end.
+
+
+%% shortcut_selectval(List, Reg, Fail, PrevCond) -> FailLabel | error
+%% Try to shortcut a selectval instruction. A selectval instruction
+%% is equivalent to the following instruction sequence:
+%%
+%% is_ne_exact L1 Reg Value1
+%% .
+%% .
+%% .
+%% is_ne_exact LN Reg ValueN
+%% jump DefaultFailLabel
+%%
+shortcut_selectval([Val,{f,Lbl}|T], R, Fail, Prev) ->
+ case will_succeed(Prev, {'=/=',R,get_literal(Val)}) of
+ yes -> shortcut_selectval(T, R, Fail, Prev);
+ no -> Lbl;
+ maybe -> error
+ end;
+shortcut_selectval([], _, Fail, _) -> Fail.
+
+%% will_succeed(PrevCondition, Condition) -> yes | no | maybe
+%% PrevCondition is a condition known to be true. This function
+%% will tell whether Condition will succeed.
+
+will_succeed({Op1,Reg,A}, {Op2,Reg,B}) ->
+ will_succeed_1(Op1, A, Op2, B);
+will_succeed({'=:=',Reg,{literal,A}}, {TypeTest,Reg}) ->
+ case erlang:TypeTest(A) of
+ false -> no;
+ true -> yes
+ end;
+will_succeed({_,_,_}, maybe) ->
+ maybe;
+will_succeed({_,_,_}, Test) when is_tuple(Test) ->
+ maybe.
+
+will_succeed_1('=:=', A, '<', B) ->
+ if
+ B =< A -> no;
+ true -> yes
+ end;
+will_succeed_1('=:=', A, '=<', B) ->
+ if
+ B < A -> no;
+ true -> yes
+ end;
+will_succeed_1('=:=', A, '=:=', B) ->
+ if
+ A =:= B -> yes;
+ true -> no
+ end;
+will_succeed_1('=:=', A, '=/=', B) ->
+ if
+ A =:= B -> no;
+ true -> yes
+ end;
+will_succeed_1('=:=', A, '>=', B) ->
+ if
+ B > A -> no;
+ true -> yes
+ end;
+will_succeed_1('=:=', A, '>', B) ->
+ if
+ B >= A -> no;
+ true -> yes
+ end;
+
+will_succeed_1('=/=', A, '=/=', B) when A =:= B -> yes;
+will_succeed_1('=/=', A, '=:=', B) when A =:= B -> no;
+
+will_succeed_1('<', A, '=:=', B) when B >= A -> no;
+will_succeed_1('<', A, '=/=', B) when B >= A -> yes;
+will_succeed_1('<', A, '<', B) when B >= A -> yes;
+will_succeed_1('<', A, '=<', B) when B > A -> yes;
+will_succeed_1('<', A, '>=', B) when B > A -> no;
+will_succeed_1('<', A, '>', B) when B >= A -> no;
+
+will_succeed_1('=<', A, '=:=', B) when B > A -> no;
+will_succeed_1('=<', A, '=/=', B) when B > A -> yes;
+will_succeed_1('=<', A, '<', B) when B > A -> yes;
+will_succeed_1('=<', A, '=<', B) when B >= A -> yes;
+will_succeed_1('=<', A, '>=', B) when B > A -> no;
+will_succeed_1('=<', A, '>', B) when B >= A -> no;
+
+will_succeed_1('>=', A, '=:=', B) when B < A -> no;
+will_succeed_1('>=', A, '=/=', B) when B < A -> yes;
+will_succeed_1('>=', A, '<', B) when B =< A -> no;
+will_succeed_1('>=', A, '=<', B) when B < A -> no;
+will_succeed_1('>=', A, '>=', B) when B =< A -> yes;
+will_succeed_1('>=', A, '>', B) when B < A -> yes;
+
+will_succeed_1('>', A, '=:=', B) when B =< A -> no;
+will_succeed_1('>', A, '=/=', B) when B =< A -> yes;
+will_succeed_1('>', A, '<', B) when B =< A -> no;
+will_succeed_1('>', A, '=<', B) when B < A -> no;
+will_succeed_1('>', A, '>=', B) when B =< A -> yes;
+will_succeed_1('>', A, '>', B) when B < A -> yes;
+
+will_succeed_1(_, _, _, _) -> maybe.
+
+%% normalize_op(Instruction) -> {Normalized,FailLabel} | error
+%% Normalized = {Operator,Register,Literal} |
+%% {TypeTest,Register} |
+%% maybe
+%% Operation = '<' | '=<' | '=:=' | '=/=' | '>=' | '>'
+%% TypeTest = is_atom | is_integer ...
+%% Literal = {literal,Term}
+%%
+%% Normalize a relational operator to facilitate further
+%% comparisons between operators. Always make the register
+%% operand the first operand. Thus the following instruction:
+%%
+%% {test,is_ge,{f,99},{integer,13},{x,0}}
+%%
+%% will be normalized to:
+%%
+%% {'=<',{x,0},{literal,13}}
+%%
+%% NOTE: Bit syntax test instructions are scary. They may change the
+%% state of match contexts and update registers, so we don't dare
+%% mess with them.
+
+normalize_op({test,is_ge,{f,Fail},Ops}) ->
+ normalize_op_1('>=', Ops, Fail);
+normalize_op({test,is_lt,{f,Fail},Ops}) ->
+ normalize_op_1('<', Ops, Fail);
+normalize_op({test,is_eq_exact,{f,Fail},Ops}) ->
+ normalize_op_1('=:=', Ops, Fail);
+normalize_op({test,is_ne_exact,{f,Fail},Ops}) ->
+ normalize_op_1('=/=', Ops, Fail);
+normalize_op({test,is_nil,{f,Fail},[R]}) ->
+ normalize_op_1('=:=', [R,nil], Fail);
+normalize_op({test,Op,{f,Fail},[R]}) ->
+ case erl_internal:new_type_test(Op, 1) of
+ true -> {{Op,R},Fail};
+ false -> {maybe,Fail}
+ end;
+normalize_op({test,_,{f,Fail},_}=I) ->
+ case beam_utils:is_pure_test(I) of
+ true -> {maybe,Fail};
+ false -> error
+ end;
+normalize_op(_) ->
+ error.
+
+normalize_op_1(Op, [Op1,Op2], Fail) ->
+ case {get_literal(Op1),get_literal(Op2)} of
+ {error,error} ->
+ %% Both operands are registers.
+ {maybe,Fail};
+ {error,Lit} ->
+ {{Op,Op1,Lit},Fail};
+ {Lit,error} ->
+ {{turn_op(Op),Op2,Lit},Fail};
+ {_,_} ->
+ %% Both operands are literals. Can probably only
+ %% happen if the Core Erlang optimizations passes were
+ %% turned off, so don't bother trying to do something
+ %% smart here.
+ {maybe,Fail}
+ end.
+
+turn_op('<') -> '>';
+turn_op('>=') -> '=<';
+turn_op('=:='=Op) -> Op;
+turn_op('=/='=Op) -> Op.
+
+negate_op('>=') -> '<';
+negate_op('<') -> '>=';
+negate_op('=<') -> '>';
+negate_op('>') -> '=<';
+negate_op('=:=') -> '=/=';
+negate_op('=/=') -> '=:='.
+
+get_literal({atom,Val}) ->
+ {literal,Val};
+get_literal({integer,Val}) ->
+ {literal,Val};
+get_literal({float,Val}) ->
+ {literal,Val};
+get_literal(nil) ->
+ {literal,[]};
+get_literal({literal,_}=Lit) ->
+ Lit;
+get_literal({_,_}) -> error.
+
+
+%%%
+%%% Removing stores to Y registers is not always safe
+%%% if there is an instruction that causes an exception
+%%% within a catch. In practice, there are few or no
+%%% opportunities for removing stores to Y registers anyway
+%%% if sys_core_fold has been run.
+%%%
+
+is_killed_at({x,_}=Reg, Lbl, D) ->
+ beam_utils:is_killed_at(Reg, Lbl, D);
+is_killed_at({y,_}, _, _) ->
+ false.
diff --git a/lib/compiler/src/beam_dict.erl b/lib/compiler/src/beam_dict.erl
index 212b9fb03a..9565ab74c4 100644
--- a/lib/compiler/src/beam_dict.erl
+++ b/lib/compiler/src/beam_dict.erl
@@ -1,18 +1,19 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1998-2013. All Rights Reserved.
+%% Copyright Ericsson AB 1998-2016. All Rights Reserved.
%%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
%%
%% %CopyrightEnd%
%%
@@ -29,16 +30,24 @@
-type label() :: non_neg_integer().
+-type index() :: non_neg_integer().
+
+-type atom_tab() :: #{atom() => index()}.
+-type import_tab() :: gb_trees:tree(mfa(), index()).
+-type fname_tab() :: #{Name :: term() => index()}.
+-type line_tab() :: #{{Fname :: index(), Line :: term()} => index()}.
+-type literal_tab() :: dict:dict(Literal :: term(), index()).
+
-record(asm,
- {atoms = gb_trees:empty() :: gb_tree(), %{Atom,Index}
+ {atoms = #{} :: atom_tab(),
exports = [] :: [{label(), arity(), label()}],
locals = [] :: [{label(), arity(), label()}],
- imports = gb_trees:empty() :: gb_tree(), %{{M,F,A},Index}
+ imports = gb_trees:empty() :: import_tab(),
strings = <<>> :: binary(), %String pool
- lambdas = [], %[{...}]
- literals = dict:new() :: dict(), %Format: {Literal,Number}
- fnames = gb_trees:empty() :: gb_tree(), %{Name,Index}
- lines = gb_trees:empty() :: gb_tree(), %{{Fname,Line},Index}
+ lambdas = {0,[]}, %[{...}]
+ literals = dict:new() :: literal_tab(),
+ fnames = #{} :: fname_tab(),
+ lines = #{} :: line_tab(),
num_lines = 0 :: non_neg_integer(), %Number of line instructions
next_import = 0 :: non_neg_integer(),
string_offset = 0 :: non_neg_integer(),
@@ -57,7 +66,7 @@ new() ->
%% Remember the highest opcode.
-spec opcode(non_neg_integer(), bdict()) -> bdict().
-opcode(Op, Dict) when Dict#asm.highest_opcode > Op -> Dict;
+opcode(Op, Dict) when Dict#asm.highest_opcode >= Op -> Dict;
opcode(Op, Dict) -> Dict#asm{highest_opcode=Op}.
%% Returns the highest opcode encountered.
@@ -69,14 +78,12 @@ highest_opcode(#asm{highest_opcode=Op}) -> Op.
%% atom(Atom, Dict) -> {Index,Dict'}
-spec atom(atom(), bdict()) -> {pos_integer(), bdict()}.
-atom(Atom, #asm{atoms=Atoms0}=Dict) when is_atom(Atom) ->
- case gb_trees:lookup(Atom, Atoms0) of
- {value,Index} ->
- {Index,Dict};
- none ->
- NextIndex = gb_trees:size(Atoms0) + 1,
- Atoms = gb_trees:insert(Atom, NextIndex, Atoms0),
- {NextIndex,Dict#asm{atoms=Atoms}}
+atom(Atom, #asm{atoms=Atoms}=Dict) when is_atom(Atom) ->
+ case Atoms of
+ #{ Atom := Index} -> {Index,Dict};
+ _ ->
+ NextIndex = maps:size(Atoms) + 1,
+ {NextIndex,Dict#asm{atoms=Atoms#{Atom=>NextIndex}}}
end.
%% Remembers an exported function.
@@ -138,15 +145,14 @@ string(Str, Dict) when is_list(Str) ->
-spec lambda(label(), non_neg_integer(), bdict()) ->
{non_neg_integer(), bdict()}.
-lambda(Lbl, NumFree, #asm{lambdas=Lambdas0}=Dict) ->
- OldIndex = length(Lambdas0),
+lambda(Lbl, NumFree, #asm{lambdas={OldIndex,Lambdas0}}=Dict) ->
%% Set Index the same as OldIndex.
Index = OldIndex,
%% Initialize OldUniq to 0. It will be set to an unique value
%% based on the MD5 checksum of the BEAM code for the module.
OldUniq = 0,
Lambdas = [{Lbl,{OldIndex,Lbl,Index,NumFree,OldUniq}}|Lambdas0],
- {OldIndex,Dict#asm{lambdas=Lambdas}}.
+ {OldIndex,Dict#asm{lambdas={OldIndex+1,Lambdas}}}.
%% Returns the index for a literal (adding it to the literal table if necessary).
%% literal(Literal, Dict) -> {Index,Dict'}
@@ -169,26 +175,22 @@ line([], #asm{num_lines=N}=Dict) ->
%% No location available. Return the special pre-defined
%% index 0.
{0,Dict#asm{num_lines=N+1}};
-line([{location,Name,Line}], #asm{lines=Lines0,num_lines=N}=Dict0) ->
+line([{location,Name,Line}], #asm{lines=Lines,num_lines=N}=Dict0) ->
{FnameIndex,Dict1} = fname(Name, Dict0),
- case gb_trees:lookup({FnameIndex,Line}, Lines0) of
- {value,Index} ->
- {Index,Dict1#asm{num_lines=N+1}};
- none ->
- Index = gb_trees:size(Lines0) + 1,
- Lines = gb_trees:insert({FnameIndex,Line}, Index, Lines0),
- Dict = Dict1#asm{lines=Lines,num_lines=N+1},
- {Index,Dict}
+ Key = {FnameIndex,Line},
+ case Lines of
+ #{Key := Index} -> {Index,Dict1#asm{num_lines=N+1}};
+ _ ->
+ Index = maps:size(Lines) + 1,
+ {Index, Dict1#asm{lines=Lines#{Key=>Index},num_lines=N+1}}
end.
-fname(Name, #asm{fnames=Fnames0}=Dict) ->
- case gb_trees:lookup(Name, Fnames0) of
- {value,Index} ->
- {Index,Dict};
- none ->
- Index = gb_trees:size(Fnames0),
- Fnames = gb_trees:insert(Name, Index, Fnames0),
- {Index,Dict#asm{fnames=Fnames}}
+fname(Name, #asm{fnames=Fnames}=Dict) ->
+ case Fnames of
+ #{Name := Index} -> {Index,Dict};
+ _ ->
+ Index = maps:size(Fnames),
+ {Index,Dict#asm{fnames=Fnames#{Name=>Index}}}
end.
%% Returns the atom table.
@@ -196,14 +198,12 @@ fname(Name, #asm{fnames=Fnames0}=Dict) ->
-spec atom_table(bdict()) -> {non_neg_integer(), [[non_neg_integer(),...]]}.
atom_table(#asm{atoms=Atoms}) ->
- NumAtoms = gb_trees:size(Atoms),
- Sorted = lists:keysort(2, gb_trees:to_list(Atoms)),
- Fun = fun({A,_}) ->
- L = atom_to_list(A),
- [length(L)|L]
- end,
- AtomTab = lists:map(Fun, Sorted),
- {NumAtoms,AtomTab}.
+ NumAtoms = maps:size(Atoms),
+ Sorted = lists:keysort(2, maps:to_list(Atoms)),
+ {NumAtoms,[begin
+ L = atom_to_list(A),
+ [length(L)|L]
+ end || {A,_} <- Sorted]}.
%% Returns the table of local functions.
%% local_table(Dict) -> {NumLocals, [{Function, Arity, Label}...]}
@@ -235,13 +235,13 @@ string_table(#asm{strings=Strings,string_offset=Size}) ->
-spec lambda_table(bdict()) -> {non_neg_integer(), [<<_:192>>]}.
-lambda_table(#asm{locals=Loc0,lambdas=Lambdas0}) ->
+lambda_table(#asm{locals=Loc0,lambdas={NumLambdas,Lambdas0}}) ->
Lambdas1 = sofs:relation(Lambdas0),
Loc = sofs:relation([{Lbl,{F,A}} || {F,A,Lbl} <- Loc0]),
Lambdas2 = sofs:relative_product1(Lambdas1, Loc),
Lambdas = [<<F:32,A:32,Lbl:32,Index:32,NumFree:32,OldUniq:32>> ||
{{_,Lbl,Index,NumFree,OldUniq},{F,A}} <- sofs:to_external(Lambdas2)],
- {length(Lambdas),Lambdas}.
+ {NumLambdas,Lambdas}.
%% Returns the literal table.
%% literal_table(Dict) -> {NumLiterals, [<<TermSize>>,TermInExternalFormat]}
@@ -265,11 +265,11 @@ my_term_to_binary(Term) ->
non_neg_integer(),[{non_neg_integer(),non_neg_integer()}]}.
line_table(#asm{fnames=Fnames0,lines=Lines0,num_lines=NumLineInstrs}) ->
- NumFnames = gb_trees:size(Fnames0),
- Fnames1 = lists:keysort(2, gb_trees:to_list(Fnames0)),
+ NumFnames = maps:size(Fnames0),
+ Fnames1 = lists:keysort(2, maps:to_list(Fnames0)),
Fnames = [Name || {Name,_} <- Fnames1],
- NumLines = gb_trees:size(Lines0),
- Lines1 = lists:keysort(2, gb_trees:to_list(Lines0)),
+ NumLines = maps:size(Lines0),
+ Lines1 = lists:keysort(2, maps:to_list(Lines0)),
Lines = [L || {L,_} <- Lines1],
{NumLineInstrs,NumFnames,Fnames,NumLines,Lines}.
diff --git a/lib/compiler/src/beam_disasm.erl b/lib/compiler/src/beam_disasm.erl
index 1a8bbcee22..c699672db1 100644
--- a/lib/compiler/src/beam_disasm.erl
+++ b/lib/compiler/src/beam_disasm.erl
@@ -1,18 +1,19 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2000-2013. All Rights Reserved.
+%% Copyright Ericsson AB 2000-2016. All Rights Reserved.
%%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
%%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
%%
%% %CopyrightEnd%
%%=======================================================================
@@ -37,7 +38,8 @@
%%-----------------------------------------------------------------------
--type literals() :: 'none' | gb_tree().
+-type index() :: non_neg_integer().
+-type literals() :: 'none' | gb_trees:tree(index(), term()).
-type symbolic_tag() :: 'a' | 'f' | 'h' | 'i' | 'u' | 'x' | 'y' | 'z'.
-type disasm_tag() :: symbolic_tag() | 'fr' | 'atom' | 'float' | 'literal'.
-type disasm_term() :: 'nil' | {disasm_tag(), _}.
@@ -216,7 +218,8 @@ optional_chunk(F, ChunkTag) ->
%%-----------------------------------------------------------------------
-type l_info() :: {non_neg_integer(), {_,_,_,_,_,_}}.
--spec beam_disasm_lambdas('none' | binary(), gb_tree()) -> 'none' | [l_info()].
+-spec beam_disasm_lambdas('none' | binary(), gb_trees:tree(index(), _)) ->
+ 'none' | [l_info()].
beam_disasm_lambdas(none, _) -> none;
beam_disasm_lambdas(<<_:32,Tab/binary>>, Atoms) ->
@@ -311,10 +314,7 @@ get_funs({LsR0,[{func_info,[{atom,M}=AtomM,{atom,F}=AtomF,ArityArg]}|Code0]})
when is_atom(M), is_atom(F) ->
Arity = resolve_arg_unsigned(ArityArg),
{LsR,Code,RestCode} = get_fun(Code0, []),
- Entry = case Code of
- [{label,[{u,E}]}|_] -> E;
- _ -> undefined
- end,
+ [{label,[{u,Entry}]}|_] = Code,
[#function{name=F,
arity=Arity,
entry=Entry,
@@ -365,6 +365,14 @@ disasm_instr(B, Bs, Atoms, Literals) ->
disasm_select_inst(select_val, Bs, Atoms, Literals);
select_tuple_arity ->
disasm_select_inst(select_tuple_arity, Bs, Atoms, Literals);
+ put_map_assoc ->
+ disasm_map_inst(put_map_assoc, Arity, Bs, Atoms, Literals);
+ put_map_exact ->
+ disasm_map_inst(put_map_exact, Arity, Bs, Atoms, Literals);
+ get_map_elements ->
+ disasm_map_inst(get_map_elements, Arity, Bs, Atoms, Literals);
+ has_map_fields ->
+ disasm_map_inst(has_map_fields, Arity, Bs, Atoms, Literals);
_ ->
try decode_n_args(Arity, Bs, Atoms, Literals) of
{Args, RestBs} ->
@@ -395,6 +403,16 @@ disasm_select_inst(Inst, Bs, Atoms, Literals) ->
{List, RestBs} = decode_n_args(Len, Bs4, Atoms, Literals),
{{Inst, [X,F,{Z,U,List}]}, RestBs}.
+disasm_map_inst(Inst, Arity, Bs0, Atoms, Literals) ->
+ {Args0,Bs1} = decode_n_args(Arity, Bs0, Atoms, Literals),
+ %% no droplast ..
+ [Z|Args1] = lists:reverse(Args0),
+ Args = lists:reverse(Args1),
+ {U, Bs2} = decode_arg(Bs1, Atoms, Literals),
+ {u, Len} = U,
+ {List, RestBs} = decode_n_args(Len, Bs2, Atoms, Literals),
+ {{Inst, Args ++ [{Z,U,List}]}, RestBs}.
+
%%-----------------------------------------------------------------------
%% decode_arg([Byte]) -> {Arg, [Byte]}
%%
@@ -417,11 +435,12 @@ decode_arg([B|Bs]) ->
decode_int(Tag, B, Bs)
end.
--spec decode_arg([byte(),...], gb_tree(), literals()) -> {disasm_term(), [byte()]}.
+-spec decode_arg([byte(),...], gb_trees:tree(index(), _), literals()) ->
+ {disasm_term(), [byte()]}.
decode_arg([B|Bs0], Atoms, Literals) ->
Tag = decode_tag(B band 2#111),
- ?NO_DEBUG('Tag = ~p, B = ~p, Bs = ~p~n', [Tag, B, Bs]),
+ ?NO_DEBUG('Tag = ~p, B = ~p, Bs = ~p~n', [Tag, B, Bs0]),
case Tag of
z ->
decode_z_tagged(Tag, B, Bs0, Literals);
@@ -1009,6 +1028,7 @@ resolve_inst({gc_bif2,Args},Imports,_,_) ->
[F,Live,Bif,A1,A2,Reg] = resolve_args(Args),
{extfunc,_Mod,BifName,_Arity} = lookup(Bif+1,Imports),
{gc_bif,BifName,F,Live,[A1,A2],Reg};
+
%%
%% New instruction in R14, gc_bif with 3 arguments
%%
@@ -1119,6 +1139,29 @@ resolve_inst({line,[Index]},_,_,_) ->
{line,resolve_arg(Index)};
%%
+%% 17.0
+%%
+resolve_inst({put_map_assoc,Args},_,_,_) ->
+ [FLbl,Src,Dst,{u,N},{{z,1},{u,_Len},List0}] = Args,
+ List = resolve_args(List0),
+ {put_map_assoc,FLbl,Src,Dst,N,{list,List}};
+resolve_inst({put_map_exact,Args},_,_,_) ->
+ [FLbl,Src,Dst,{u,N},{{z,1},{u,_Len},List0}] = Args,
+ List = resolve_args(List0),
+ {put_map_exact,FLbl,Src,Dst,N,{list,List}};
+resolve_inst({is_map=I,Args0},_,_,_) ->
+ [FLbl|Args] = resolve_args(Args0),
+ {test,I,FLbl,Args};
+resolve_inst({has_map_fields,Args0},_,_,_) ->
+ [FLbl,Src,{{z,1},{u,_Len},List0}] = Args0,
+ List = resolve_args(List0),
+ {test,has_map_fields,FLbl,Src,{list,List}};
+resolve_inst({get_map_elements,Args0},_,_,_) ->
+ [FLbl,Src,{{z,1},{u,_Len},List0}] = Args0,
+ List = resolve_args(List0),
+ {get_map_elements,FLbl,Src,{list,List}};
+
+%%
%% Catches instructions that are not yet handled.
%%
resolve_inst(X,_,_,_) -> ?exit({resolve_inst,X}).
diff --git a/lib/compiler/src/beam_disasm.hrl b/lib/compiler/src/beam_disasm.hrl
index c2aca1199e..d968cd9587 100644
--- a/lib/compiler/src/beam_disasm.hrl
+++ b/lib/compiler/src/beam_disasm.hrl
@@ -2,18 +2,19 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2007-2009. All Rights Reserved.
+%% Copyright Ericsson AB 2007-2016. All Rights Reserved.
%%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
%%
%% %CopyrightEnd%
%%
@@ -21,7 +22,9 @@
%% the system (e.g. in the translation from Beam to Icode).
%%
-%% XXX: THE FOLLOWING TYPE DECLARATION DOES NOT BELONG HERE...
+%% XXX: THE FOLLOWING TYPE DECLARATION DOES NOT BELONG HERE.
+%% IT SHOULD BE MOVED TO A FILE THAT DEFINES (AND EXPORTS)
+%% PROPER TYPES FOR THE SET OF BEAM INSTRUCTIONS.
%%
-type beam_instr() :: 'bs_init_writable' | 'fclearerror' | 'if_end'
| 'remove_message' | 'return' | 'send' | 'timeout'
@@ -33,7 +36,7 @@
-record(function, {name :: atom(),
arity :: byte(),
- entry, %% unused ??
+ entry :: beam_lib:label(), %% unnecessary ?
code = [] :: [beam_instr()]}).
-record(beam_file, {module :: module(),
diff --git a/lib/compiler/src/beam_except.erl b/lib/compiler/src/beam_except.erl
index e5ec1bd904..4a181c1923 100644
--- a/lib/compiler/src/beam_except.erl
+++ b/lib/compiler/src/beam_except.erl
@@ -1,18 +1,19 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2011-2013. All Rights Reserved.
+%% Copyright Ericsson AB 2011-2016. All Rights Reserved.
%%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
%%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
%%
%% %CopyrightEnd%
%%
@@ -131,9 +132,15 @@ translate_exception(_, _, _, _) -> no.
fix_block(Is, 0) ->
reverse(Is);
-fix_block(Is0, Words) ->
- [{set,[],[],{alloc,Live,{F1,F2,Needed,F3}}}|Is] = reverse(Is0),
- [{set,[],[],{alloc,Live,{F1,F2,Needed-Words,F3}}}|Is].
+fix_block(Is, Words) ->
+ reverse(fix_block_1(Is, Words)).
+
+fix_block_1([{set,[],[],{alloc,Live,{F1,F2,Needed0,F3}}}|Is], Words) ->
+ Needed = Needed0 - Words,
+ true = Needed >= 0, %Assertion.
+ [{set,[],[],{alloc,Live,{F1,F2,Needed,F3}}}|Is];
+fix_block_1([I|Is], Words) ->
+ [I|fix_block_1(Is, Words)].
dig_out_block_fc([{set,[],[],{alloc,Live,_}}|Bl]) ->
case dig_out_fc(Bl, Live-1, nil) of
diff --git a/lib/compiler/src/beam_flatten.erl b/lib/compiler/src/beam_flatten.erl
index 25428c0c10..36369bd0b4 100644
--- a/lib/compiler/src/beam_flatten.erl
+++ b/lib/compiler/src/beam_flatten.erl
@@ -1,18 +1,19 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1999-2013. All Rights Reserved.
+%% Copyright Ericsson AB 1999-2016. All Rights Reserved.
%%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
%%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
%%
%% %CopyrightEnd%
%%
@@ -51,6 +52,7 @@ norm_block([], Acc) -> Acc.
norm({set,[D],As,{bif,N,F}}) -> {bif,N,F,As,D};
norm({set,[D],As,{alloc,R,{gc_bif,N,F}}}) -> {gc_bif,N,F,R,As,D};
+norm({set,[D],[],init}) -> {init,D};
norm({set,[D],[S],move}) -> {move,S,D};
norm({set,[D],[S],fmove}) -> {fmove,S,D};
norm({set,[D],[S],fconv}) -> {fconv,S,D};
@@ -60,6 +62,9 @@ norm({set,[],[S],put}) -> {put,S};
norm({set,[D],[S],{get_tuple_element,I}}) -> {get_tuple_element,S,I,D};
norm({set,[],[S,D],{set_tuple_element,I}}) -> {set_tuple_element,S,D,I};
norm({set,[D1,D2],[S],get_list}) -> {get_list,S,D1,D2};
+norm({set,[D],[S|Puts],{alloc,R,{put_map,Op,F}}}) ->
+ {put_map,F,Op,S,D,R,{list,Puts}};
+%% get_map_elements is always handled in beam_split (moved out of block)
norm({set,[],[],remove_message}) -> remove_message;
norm({set,[],[],fclearerror}) -> fclearerror;
norm({set,[],[],fcheckerror}) -> {fcheckerror,{f,0}}.
diff --git a/lib/compiler/src/beam_jump.erl b/lib/compiler/src/beam_jump.erl
index b29a3565e4..09cd3aa2d4 100644
--- a/lib/compiler/src/beam_jump.erl
+++ b/lib/compiler/src/beam_jump.erl
@@ -1,18 +1,19 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1999-2013. All Rights Reserved.
+%% Copyright Ericsson AB 1999-2016. All Rights Reserved.
%%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
%%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
%%
%% %CopyrightEnd%
%%
@@ -127,7 +128,7 @@
%%% on the program state.
%%%
--import(lists, [reverse/1,reverse/2,foldl/3,dropwhile/2]).
+-import(lists, [reverse/1,reverse/2,foldl/3]).
module({Mod,Exp,Attr,Fs0,Lc}, _Opt) ->
Fs = [function(F) || F <- Fs0],
@@ -152,20 +153,26 @@ function({function,Name,Arity,CLabel,Asm0}) ->
share(Is0) ->
%% We will get more sharing if we never fall through to a label.
Is = eliminate_fallthroughs(Is0, []),
- share_1(Is, dict:new(), [], []).
+ share_1(Is, #{}, [], []).
share_1([{label,_}=Lbl|Is], Dict, [], Acc) ->
share_1(Is, Dict, [], [Lbl|Acc]);
share_1([{label,L}=Lbl|Is], Dict0, Seq, Acc) ->
- case dict:find(Seq, Dict0) of
+ case maps:find(Seq, Dict0) of
error ->
- Dict = dict:store(Seq, L, Dict0),
+ Dict = maps:put(Seq, L, Dict0),
share_1(Is, Dict, [], [Lbl|Seq ++ Acc]);
{ok,Label} ->
share_1(Is, Dict0, [], [Lbl,{jump,{f,Label}}|Acc])
end;
share_1([{func_info,_,_,_}=I|Is], _, [], Acc) ->
reverse(Is, [I|Acc]);
+share_1([{'try',_,_}=I|Is], Dict0, Seq, Acc) ->
+ Dict = clean_non_sharable(Dict0),
+ share_1(Is, Dict, [I|Seq], Acc);
+share_1([{try_case,_}=I|Is], Dict0, Seq, Acc) ->
+ Dict = clean_non_sharable(Dict0),
+ share_1(Is, Dict, [I|Seq], Acc);
share_1([I|Is], Dict, Seq, Acc) ->
case is_unreachable_after(I) of
false ->
@@ -174,6 +181,24 @@ share_1([I|Is], Dict, Seq, Acc) ->
share_1(Is, Dict, [I], Acc)
end.
+clean_non_sharable(Dict) ->
+ %% We are passing in or out of a 'try' block. Remove
+ %% sequences that should not shared over the boundaries
+ %% of a 'try' block. Since the end of the sequence must match,
+ %% the only possible match between a sequence outside and
+ %% a sequence inside the 'try' block is a sequence that ends
+ %% with an instruction that causes an exception. Any sequence
+ %% that causes an exception must contain a line/1 instruction.
+ maps:filter(fun(K, _V) -> sharable_with_try(K) end, Dict).
+
+sharable_with_try([{line,_}|_]) ->
+ %% This sequence may cause an exception and may potentially
+ %% match a sequence on the other side of the 'try' block
+ %% boundary.
+ false;
+sharable_with_try([_|Is]) ->
+ sharable_with_try(Is);
+sharable_with_try([]) -> true.
%% Eliminate all fallthroughs. Return the result reversed.
@@ -202,19 +227,19 @@ is_label(_) -> false.
move(Is) ->
move_1(Is, [], []).
-move_1([I|Is], End0, Acc0) ->
+move_1([I|Is], Ends, Acc0) ->
case is_exit_instruction(I) of
false ->
- move_1(Is, End0, [I|Acc0]);
+ move_1(Is, Ends, [I|Acc0]);
true ->
- case extract_seq(Acc0, [I|End0]) of
+ case extract_seq(Acc0, [I]) of
no ->
- move_1(Is, End0, [I|Acc0]);
+ move_1(Is, Ends, [I|Acc0]);
{yes,End,Acc} ->
- move_1(Is, End, Acc)
+ move_1(Is, [End|Ends], Acc)
end
end;
-move_1([], End, Acc) -> reverse(Acc, End).
+move_1([], Ends, Acc) -> reverse(Acc, lists:append(reverse(Ends))).
extract_seq([{line,_}=Line|Is], Acc) ->
extract_seq(Is, [Line|Acc]);
@@ -241,17 +266,17 @@ extract_seq_1(_, _) -> no.
%%% (3) (4) (5) (6) Jump and unreachable code optimizations.
%%%
--record(st, {fc, %Label for function class errors.
- entry, %Entry label (must not be moved).
- mlbl, %Moved labels.
- labels %Set of referenced labels.
- }).
+-record(st,
+ {
+ entry, %Entry label (must not be moved).
+ mlbl, %Moved labels.
+ labels :: cerl_sets:set() %Set of referenced labels.
+ }).
-opt([{label,Fc}|_]=Is0, CLabel) ->
- Lbls = initial_labels(Is0),
+opt(Is0, CLabel) ->
find_fixpoint(fun(Is) ->
- St = #st{fc=Fc,entry=CLabel,mlbl=dict:new(),
- labels=Lbls},
+ Lbls = initial_labels(Is),
+ St = #st{entry=CLabel,mlbl=#{},labels=Lbls},
opt(Is, [], St)
end, Is0).
@@ -295,24 +320,30 @@ opt([{test,_,{f,_}=Lbl,_,_,_}=I|Is], Acc, St) ->
opt(Is, [I|Acc], label_used(Lbl, St));
opt([{select,_,_R,Fail,Vls}=I|Is], Acc, St) ->
skip_unreachable(Is, [I|Acc], label_used([Fail|Vls], St));
-opt([{label,L}=I|Is], Acc, #st{entry=L}=St) ->
- %% NEVER move the entry label.
- opt(Is, [I|Acc], St);
-opt([{label,L1},{jump,{f,L2}}=I|Is], [Prev|Acc], St0) ->
- St = St0#st{mlbl=dict:append(L2, L1, St0#st.mlbl)},
- opt([Prev,I|Is], Acc, label_used({f,L2}, St));
opt([{label,Lbl}=I|Is], Acc, #st{mlbl=Mlbl}=St0) ->
- case dict:find(Lbl, Mlbl) of
+ case maps:find(Lbl, Mlbl) of
{ok,Lbls} ->
%% Essential to remove the list of labels from the dictionary,
%% since we will rescan the inserted labels. We MUST rescan.
- St = St0#st{mlbl=dict:erase(Lbl, Mlbl)},
+ St = St0#st{mlbl=maps:remove(Lbl, Mlbl)},
insert_labels([Lbl|Lbls], Is, Acc, St);
- error -> opt(Is, [I|Acc], St0)
+ error ->
+ opt(Is, [I|Acc], St0)
end;
-opt([{jump,{f,Lbl}},{label,Lbl}=I|Is], Acc, St) ->
- opt([I|Is], Acc, St);
-opt([{jump,Lbl}=I|Is], Acc, St) ->
+opt([{jump,{f,_}=X}|[{label,_},{jump,X}|_]=Is], Acc, St) ->
+ opt(Is, Acc, St);
+opt([{jump,{f,Lbl}}|[{label,Lbl}|_]=Is], Acc, St) ->
+ opt(Is, Acc, St);
+opt([{jump,{f,L}=Lbl}=I|Is], Acc0, #st{mlbl=Mlbl0}=St0) ->
+ %% All labels before this jump instruction should now be
+ %% moved to the location of the jump's target.
+ {Lbls,Acc} = collect_labels(Acc0, St0),
+ St = case Lbls of
+ [] -> St0;
+ [_|_] ->
+ Mlbl = maps_append_list(L, Lbls, Mlbl0),
+ St0#st{mlbl=Mlbl}
+ end,
skip_unreachable(Is, [I|Acc], label_used(Lbl, St));
%% Optimization: quickly handle some common instructions that don't
%% have any failure labels and where is_unreachable_after(I) =:= false.
@@ -332,22 +363,36 @@ opt([I|Is], Acc, #st{labels=Used0}=St0) ->
true -> skip_unreachable(Is, [I|Acc], St);
false -> opt(Is, [I|Acc], St)
end;
-opt([], Acc, #st{fc=Fc,mlbl=Mlbl}) ->
+opt([], Acc, #st{mlbl=Mlbl}) ->
Code = reverse(Acc),
- case dict:find(Fc, Mlbl) of
- {ok,Lbls} -> insert_fc_labels(Lbls, Mlbl, Code);
- error -> Code
- end.
+ insert_fc_labels(Code, Mlbl).
-insert_fc_labels([L|Ls], Mlbl, Acc0) ->
- Acc = [{label,L}|Acc0],
- case dict:find(L, Mlbl) of
+insert_fc_labels([{label,L}=I|Is0], Mlbl) ->
+ case maps:find(L, Mlbl) of
error ->
- insert_fc_labels(Ls, Mlbl, Acc);
+ [I|insert_fc_labels(Is0, Mlbl)];
{ok,Lbls} ->
- insert_fc_labels(Lbls++Ls, Mlbl, Acc)
+ Is = [{label,Lb} || Lb <- Lbls] ++ Is0,
+ [I|insert_fc_labels(Is, maps:remove(L, Mlbl))]
end;
-insert_fc_labels([], _, Acc) -> Acc.
+insert_fc_labels([_|_]=Is, _) -> Is.
+
+maps_append_list(K,Vs,M) ->
+ case M of
+ #{K:=Vs0} -> M#{K:=Vs0++Vs}; % same order as dict
+ _ -> M#{K => Vs}
+ end.
+
+collect_labels(Is, #st{entry=Entry}) ->
+ collect_labels_1(Is, Entry, []).
+
+collect_labels_1([{label,Entry}|_]=Is, Entry, Acc) ->
+ %% Never move the entry label.
+ {Acc,Is};
+collect_labels_1([{label,L}|Is], Entry, Acc) ->
+ collect_labels_1(Is, Entry, [L|Acc]);
+collect_labels_1(Is, _Entry, Acc) ->
+ {Acc,Is}.
%% label_defined(Is, Label) -> true | false.
%% Test whether the label Label is defined at the start of the instruction
@@ -394,7 +439,7 @@ skip_unreachable([], Acc, St) ->
%% Add one or more label to the set of used labels.
-label_used({f,L}, St) -> St#st{labels=gb_sets:add(L, St#st.labels)};
+label_used({f,L}, St) -> St#st{labels=cerl_sets:add_element(L,St#st.labels)};
label_used([H|T], St0) -> label_used(T, label_used(H, St0));
label_used([], St) -> St;
label_used(_Other, St) -> St.
@@ -402,7 +447,7 @@ label_used(_Other, St) -> St.
%% Test if label is used.
is_label_used(L, St) ->
- gb_sets:is_member(L, St#st.labels).
+ cerl_sets:is_element(L, St#st.labels).
%% is_unreachable_after(Instruction) -> boolean()
%% Test whether the code after Instruction is unreachable.
@@ -432,27 +477,29 @@ is_exit_instruction(_) -> false.
%% (including inside blocks).
is_label_used_in(Lbl, Is) ->
- is_label_used_in_1(Is, Lbl, gb_sets:empty()).
+ is_label_used_in_1(Is, Lbl, cerl_sets:new()).
is_label_used_in_1([{block,Block}|Is], Lbl, Empty) ->
- lists:any(fun(I) -> is_label_used_in_2(I, Lbl) end, Block)
+ lists:any(fun(I) -> is_label_used_in_block(I, Lbl) end, Block)
orelse is_label_used_in_1(Is, Lbl, Empty);
is_label_used_in_1([I|Is], Lbl, Empty) ->
Used = ulbl(I, Empty),
- gb_sets:is_member(Lbl, Used) orelse is_label_used_in_1(Is, Lbl, Empty);
+ cerl_sets:is_element(Lbl, Used) orelse is_label_used_in_1(Is, Lbl, Empty);
is_label_used_in_1([], _, _) -> false.
-is_label_used_in_2({set,_,_,Info}, Lbl) ->
+is_label_used_in_block({set,_,_,Info}, Lbl) ->
case Info of
- {bif,_,{f,F}} -> F =:= Lbl;
- {alloc,_,{gc_bif,_,{f,F}}} -> F =:= Lbl;
- {'catch',{f,F}} -> F =:= Lbl;
- {alloc,_,_} -> false;
- {put_tuple,_} -> false;
- {get_tuple_element,_} -> false;
- {set_tuple_element,_} -> false;
- {line,_} -> false;
- _ when is_atom(Info) -> false
+ {bif,_,{f,F}} -> F =:= Lbl;
+ {alloc,_,{gc_bif,_,{f,F}}} -> F =:= Lbl;
+ {alloc,_,{put_map,_,{f,F}}} -> F =:= Lbl;
+ {get_map_elements,{f,F}} -> F =:= Lbl;
+ {try_catch,_,{f,F}} -> F =:= Lbl;
+ {alloc,_,_} -> false;
+ {put_tuple,_} -> false;
+ {get_tuple_element,_} -> false;
+ {set_tuple_element,_} -> false;
+ {line,_} -> false;
+ _ when is_atom(Info) -> false
end.
%% remove_unused_labels(Instructions0) -> Instructions
@@ -465,13 +512,10 @@ remove_unused_labels(Is) ->
rem_unused(Is, Used, []).
rem_unused([{label,Lbl}=I|Is0], Used, [Prev|_]=Acc) ->
- case gb_sets:is_member(Lbl, Used) of
+ case cerl_sets:is_element(Lbl, Used) of
false ->
Is = case is_unreachable_after(Prev) of
- true ->
- dropwhile(fun({label,_}) -> false;
- (_) -> true
- end, Is0);
+ true -> drop_upto_label(Is0);
false -> Is0
end,
rem_unused(Is, Used, Acc);
@@ -490,7 +534,11 @@ initial_labels([{line,_}|Is], Acc) ->
initial_labels([{label,Lbl}|Is], Acc) ->
initial_labels(Is, [Lbl|Acc]);
initial_labels([{func_info,_,_,_},{label,Lbl}|_], Acc) ->
- gb_sets:from_list([Lbl|Acc]).
+ cerl_sets:from_list([Lbl|Acc]).
+
+drop_upto_label([{label,_}|_]=Is) -> Is;
+drop_upto_label([_|Is]) -> drop_upto_label(Is);
+drop_upto_label([]) -> [].
%% ulbl(Instruction, UsedGbSet) -> UsedGbSet'
%% Update the gb_set UsedGbSet with any function-local labels
@@ -527,13 +575,17 @@ ulbl({bs_init,Lbl,_,_,_,_}, Used) ->
mark_used(Lbl, Used);
ulbl({bs_put,Lbl,_,_}, Used) ->
mark_used(Lbl, Used);
+ulbl({put_map,Lbl,_Op,_Src,_Dst,_Live,_List}, Used) ->
+ mark_used(Lbl, Used);
+ulbl({get_map_elements,Lbl,_Src,_List}, Used) ->
+ mark_used(Lbl, Used);
ulbl(_, Used) -> Used.
mark_used({f,0}, Used) -> Used;
-mark_used({f,L}, Used) -> gb_sets:add(L, Used).
+mark_used({f,L}, Used) -> cerl_sets:add_element(L, Used).
mark_used_list([{f,L}|T], Used) ->
- mark_used_list(T, gb_sets:add(L, Used));
+ mark_used_list(T, cerl_sets:add_element(L, Used));
mark_used_list([_|T], Used) ->
mark_used_list(T, Used);
mark_used_list([], Used) -> Used.
diff --git a/lib/compiler/src/beam_listing.erl b/lib/compiler/src/beam_listing.erl
index 50d1f3cdb1..ce566373bb 100644
--- a/lib/compiler/src/beam_listing.erl
+++ b/lib/compiler/src/beam_listing.erl
@@ -1,18 +1,19 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1997-2011. All Rights Reserved.
+%% Copyright Ericsson AB 1997-2016. All Rights Reserved.
%%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
%%
%% %CopyrightEnd%
%%
@@ -46,8 +47,8 @@ module(Stream, {Mod,Exp,Attr,Code,NumLabels}) ->
fun ({function,Name,Arity,Entry,Asm}) ->
io:format(Stream, "\n\n{function, ~w, ~w, ~w}.\n",
[Name, Arity, Entry]),
- foreach(fun(Op) -> print_op(Stream, Op) end, Asm) end,
- Code);
+ io:put_chars(Stream, format_asm(Asm))
+ end, Code);
module(Stream, {Mod,Exp,Inter}) ->
%% Other kinds of intermediate formats.
io:fwrite(Stream, "~w.~n~p.~n", [Mod,Exp]),
@@ -56,10 +57,11 @@ module(Stream, [_|_]=Fs) ->
%% Form-based abstract format.
foreach(fun (F) -> io:format(Stream, "~p.\n", [F]) end, Fs).
-print_op(Stream, Label) when element(1, Label) == label ->
- io:format(Stream, " ~p.\n", [Label]);
-print_op(Stream, Op) ->
- io:format(Stream, " ~p.\n", [Op]).
+format_asm([{label,L}|Is]) ->
+ [" {label,",integer_to_list(L),"}.\n"|format_asm(Is)];
+format_asm([I|Is]) ->
+ [io_lib:format(" ~p", [I]),".\n"|format_asm(Is)];
+format_asm([]) -> [].
function(File, {function,Name,Arity,Args,Body,Vdb,_Anno}) ->
io:nl(File),
diff --git a/lib/compiler/src/beam_peep.erl b/lib/compiler/src/beam_peep.erl
index 97a8c7ba70..c8bef31824 100644
--- a/lib/compiler/src/beam_peep.erl
+++ b/lib/compiler/src/beam_peep.erl
@@ -1,18 +1,19 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2008-2013. All Rights Reserved.
+%% Copyright Ericsson AB 2008-2016. All Rights Reserved.
%%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
%%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
%%
%% %CopyrightEnd%
%%
@@ -64,18 +65,6 @@ function({function,Name,Arity,CLabel,Is0}) ->
%% InEncoding =:= latin1, OutEncoding =:= unicode;
%% InEncoding =:= latin1, OutEncoding =:= utf8 ->
%%
-%% (2) A select_val/4 instruction that only verifies that
-%% its argument is either 'true' or 'false' can be
-%% be replaced with an is_boolean/2 instruction. That is:
-%%
-%% select_val Reg Fail [ true Next false Next ]
-%% Next: ...
-%%
-%% can be rewritten to
-%%
-%% is_boolean Fail Reg
-%% Next: ...
-%%
peep(Is) ->
peep(Is, gb_sets:empty(), []).
@@ -94,12 +83,19 @@ peep([{gc_bif,_,_,_,_,Dst}=I|Is], SeenTests0, Acc) ->
%% Kill all remembered tests that depend on the destination register.
SeenTests = kill_seen(Dst, SeenTests0),
peep(Is, SeenTests, [I|Acc]);
-peep([{test,is_boolean,{f,Fail},Ops}|_]=Is, SeenTests,
- [{test,is_atom,{f,Fail},Ops}|Acc]) ->
- %% The previous is_atom/2 test (with the same failure label) is redundant.
- %% (If is_boolean(Src) is true, is_atom(Src) is also true, so it is
- %% OK to still remember that we have seen is_atom/1.)
- peep(Is, SeenTests, Acc);
+peep([{jump,{f,L}},{label,L}=I|Is], _, Acc) ->
+ %% Sometimes beam_jump has missed this optimization.
+ peep(Is, gb_sets:empty(), [I|Acc]);
+peep([{select,Op,R,F,Vls0}|Is], _, Acc) ->
+ case prune_redundant_values(Vls0, F) of
+ [] ->
+ %% No values left. Must convert to plain jump.
+ I = {jump,F},
+ peep(Is, gb_sets:empty(), [I|Acc]);
+ [_|_]=Vls ->
+ I = {select,Op,R,F,Vls},
+ peep(Is, gb_sets:empty(), [I|Acc])
+ end;
peep([{test,Op,_,Ops}=I|Is], SeenTests0, Acc) ->
case beam_utils:is_pure_test(I) of
false ->
@@ -108,34 +104,33 @@ peep([{test,Op,_,Ops}=I|Is], SeenTests0, Acc) ->
%% has succeeded.
peep(Is, gb_sets:empty(), [I|Acc]);
true ->
- Test = {Op,Ops},
- case gb_sets:is_element(Test, SeenTests0) of
+ case is_test_redundant(Op, Ops, SeenTests0) of
true ->
- %% This test has already succeeded and
+ %% This test or a similar test has already succeeded and
%% is therefore redundant.
peep(Is, SeenTests0, Acc);
false ->
%% Remember that we have seen this test.
+ Test = {Op,Ops},
SeenTests = gb_sets:insert(Test, SeenTests0),
peep(Is, SeenTests, [I|Acc])
end
end;
-peep([{select,select_val,Src,Fail,
- [{atom,false},{f,L},{atom,true},{f,L}]}|
- [{label,L}|_]=Is], SeenTests, Acc) ->
- I = {test,is_boolean,Fail,[Src]},
- peep([I|Is], SeenTests, Acc);
-peep([{select,select_val,Src,Fail,
- [{atom,true},{f,L},{atom,false},{f,L}]}|
- [{label,L}|_]=Is], SeenTests, Acc) ->
- I = {test,is_boolean,Fail,[Src]},
- peep([I|Is], SeenTests, Acc);
peep([I|Is], _, Acc) ->
%% An unknown instruction. Throw away all information we
%% have collected about test instructions.
peep(Is, gb_sets:empty(), [I|Acc]);
peep([], _, Acc) -> reverse(Acc).
+is_test_redundant(Op, Ops, Seen) ->
+ gb_sets:is_element({Op,Ops}, Seen) orelse
+ is_test_redundant_1(Op, Ops, Seen).
+
+is_test_redundant_1(is_boolean, [R], Seen) ->
+ gb_sets:is_element({is_eq_exact,[R,{atom,false}]}, Seen) orelse
+ gb_sets:is_element({is_eq_exact,[R,{atom,true}]}, Seen);
+is_test_redundant_1(_, _, _) -> false.
+
kill_seen(Dst, Seen0) ->
gb_sets:from_ordset(kill_seen_1(gb_sets:to_list(Seen0), Dst)).
@@ -145,3 +140,9 @@ kill_seen_1([{_,Ops}=Test|T], Dst) ->
false -> [Test|kill_seen_1(T, Dst)]
end;
kill_seen_1([], _) -> [].
+
+prune_redundant_values([_Val,F|Vls], F) ->
+ prune_redundant_values(Vls, F);
+prune_redundant_values([Val,Lbl|Vls], F) ->
+ [Val,Lbl|prune_redundant_values(Vls, F)];
+prune_redundant_values([], _) -> [].
diff --git a/lib/compiler/src/beam_receive.erl b/lib/compiler/src/beam_receive.erl
index 97a9188ee7..89cafe27ce 100644
--- a/lib/compiler/src/beam_receive.erl
+++ b/lib/compiler/src/beam_receive.erl
@@ -1,18 +1,19 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2010-2013. All Rights Reserved.
+%% Copyright Ericsson AB 2010-2016. All Rights Reserved.
%%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
%%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
%%
%% %CopyrightEnd%
%%
@@ -176,7 +177,8 @@ opt_recv([I|Is], D, R0, L0, Acc) ->
no;
false ->
opt_recv(Is, D, R, L, [I|Acc])
- end.
+ end;
+opt_recv([], _, _, _, _) -> no.
opt_update_regs({block,Bl}, R, L) ->
{opt_update_regs_bl(Bl, R),L};
diff --git a/lib/compiler/src/beam_reorder.erl b/lib/compiler/src/beam_reorder.erl
new file mode 100644
index 0000000000..6a7c033ec6
--- /dev/null
+++ b/lib/compiler/src/beam_reorder.erl
@@ -0,0 +1,148 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 1999-2016. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+
+-module(beam_reorder).
+
+-export([module/2]).
+-import(lists, [member/2,reverse/1]).
+
+module({Mod,Exp,Attr,Fs0,Lc}, _Opt) ->
+ Fs = [function(F) || F <- Fs0],
+ {ok,{Mod,Exp,Attr,Fs,Lc}}.
+
+function({function,Name,Arity,CLabel,Is0}) ->
+ try
+ Is = reorder(Is0),
+ {function,Name,Arity,CLabel,Is}
+ catch
+ Class:Error ->
+ Stack = erlang:get_stacktrace(),
+ io:fwrite("Function: ~w/~w\n", [Name,Arity]),
+ erlang:raise(Class, Error, Stack)
+ end.
+
+%% reorder(Instructions0) -> Instructions
+%% Reorder instructions before the beam_block pass, because reordering
+%% will be more cumbersome when the blocks are in place.
+%%
+%% Execution of get_tuple_element instructions can be delayed until
+%% they are actually needed. Consider the sequence:
+%%
+%% get_tuple_element Tuple Pos Dst
+%% test Test Fail Operands
+%%
+%% If Dst is killed at label Fail (and not referenced in Operands),
+%% we can can swap the instructions:
+%%
+%% test Test Fail Operands
+%% get_tuple_element Tuple Pos Dst
+%%
+%% That can be beneficial in two ways: Firstly, if the branch is taken
+%% we have avoided execution of the get_tuple_element instruction.
+%% Secondly, even if the branch is not taken, subsequent optimization
+%% (opt_blocks/1) may be able to change Dst to the final destination
+%% register and eliminate a 'move' instruction.
+
+reorder(Is) ->
+ D = beam_utils:index_labels(Is),
+ reorder_1(Is, D, []).
+
+reorder_1([{Op,_,_}=TryCatch|[I|Is]=Is0], D, Acc)
+ when Op =:= 'catch'; Op =:= 'try' ->
+ %% Don't allow 'try' or 'catch' instructions to split blocks if
+ %% it can be avoided.
+ case is_safe(I) of
+ false ->
+ reorder_1(Is0, D, [TryCatch|Acc]);
+ true ->
+ reorder_1([TryCatch|Is], D, [I|Acc])
+ end;
+reorder_1([{label,L}=I|_], D, Acc) ->
+ Is = beam_utils:code_at(L, D),
+ reorder_1(Is, D, [I|Acc]);
+reorder_1([{test,is_nonempty_list,_,_}=I|Is], D, Acc) ->
+ %% The run-time system may combine the is_nonempty_list test with
+ %% the following get_list instruction.
+ reorder_1(Is, D, [I|Acc]);
+reorder_1([{test,_,_,_}=I,
+ {select,_,_,_,_}=S|Is], D, Acc) ->
+ %% There is nothing to gain by inserting a get_tuple_element
+ %% instruction between the test instruction and the select
+ %% instruction.
+ reorder_1(Is, D, [S,I|Acc]);
+reorder_1([{test,_,{f,_},[Src|_]}=I|Is], D,
+ [{get_tuple_element,Src,_,_}|_]=Acc) ->
+ %% We want to avoid code that can confuse beam_validator such as:
+ %% is_tuple Fail Src
+ %% test_arity Fail Src Arity
+ %% is_map Fail Src
+ %% get_tuple_element Src Pos Dst
+ %% Therefore, don't reorder the instructions in such cases.
+ reorder_1(Is, D, [I|Acc]);
+reorder_1([{test,_,{f,L},Ss}=I|Is0], D0,
+ [{get_tuple_element,_,_,El}=G|Acc0]=Acc) ->
+ case member(El, Ss) of
+ true ->
+ reorder_1(Is0, D0, [I|Acc]);
+ false ->
+ case beam_utils:is_killed_at(El, L, D0) of
+ true ->
+ Is = [I,G|Is0],
+ reorder_1(Is, D0, Acc0);
+ false ->
+ case beam_utils:is_killed(El, Is0, D0) of
+ true ->
+ Code0 = beam_utils:code_at(L, D0),
+ Code = [G|Code0],
+ D = beam_utils:index_label(L, Code, D0),
+ Is = [I|Is0],
+ reorder_1(Is, D, Acc0);
+ false ->
+ reorder_1(Is0, D0, [I|Acc])
+ end
+ end
+ end;
+reorder_1([{allocate_zero,N,Live}=I0|Is], D,
+ [{get_tuple_element,{x,Tup},_,{x,Dst}}=G|Acc]=Acc0) ->
+ case Tup < Dst andalso Dst+1 =:= Live of
+ true ->
+ %% Move allocation instruction upwards past
+ %% get_tuple_element instructions to create more
+ %% opportunities for moving get_tuple_element
+ %% instructions.
+ I = {allocate_zero,N,Dst},
+ reorder_1([I,G|Is], D, Acc);
+ false ->
+ reorder_1(Is, D, [I0|Acc0])
+ end;
+reorder_1([I|Is], D, Acc) ->
+ reorder_1(Is, D, [I|Acc]);
+reorder_1([], _, Acc) -> reverse(Acc).
+
+%% is_safe(Instruction) -> true|false
+%% Test whether an instruction is safe (cannot cause an exception).
+
+is_safe({kill,_}) -> true;
+is_safe({move,_,_}) -> true;
+is_safe({put,_}) -> true;
+is_safe({put_list,_,_,_}) -> true;
+is_safe({put_tuple,_,_}) -> true;
+is_safe({test_heap,_,_}) -> true;
+is_safe(_) -> false.
diff --git a/lib/compiler/src/beam_split.erl b/lib/compiler/src/beam_split.erl
index cacaaebffe..c83c686953 100644
--- a/lib/compiler/src/beam_split.erl
+++ b/lib/compiler/src/beam_split.erl
@@ -1,18 +1,19 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2011. All Rights Reserved.
+%% Copyright Ericsson AB 2011-2016. All Rights Reserved.
%%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
%%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
%%
%% %CopyrightEnd%
%%
@@ -46,11 +47,20 @@ split_block([{set,[R],[_,_,_]=As,{bif,is_record,{f,Lbl}}}|Is], Bl, Acc) ->
split_block(Is, [], [{bif,is_record,{f,Lbl},As,R}|make_block(Bl, Acc)]);
split_block([{set,[R],As,{bif,N,{f,Lbl}=Fail}}|Is], Bl, Acc) when Lbl =/= 0 ->
split_block(Is, [], [{bif,N,Fail,As,R}|make_block(Bl, Acc)]);
+split_block([{set,[R],As,{bif,raise,{f,_}=Fail}}|Is], Bl, Acc) ->
+ split_block(Is, [], [{bif,raise,Fail,As,R}|make_block(Bl, Acc)]);
split_block([{set,[R],As,{alloc,Live,{gc_bif,N,{f,Lbl}=Fail}}}|Is], Bl, Acc)
when Lbl =/= 0 ->
split_block(Is, [], [{gc_bif,N,Fail,Live,As,R}|make_block(Bl, Acc)]);
-split_block([{set,[R],[],{'catch',L}}|Is], Bl, Acc) ->
- split_block(Is, [], [{'catch',R,L}|make_block(Bl, Acc)]);
+split_block([{set,[D],[S|Puts],{alloc,R,{put_map,Op,{f,Lbl}=Fail}}}|Is],
+ Bl, Acc) when Lbl =/= 0 ->
+ split_block(Is, [], [{put_map,Fail,Op,S,D,R,{list,Puts}}|
+ make_block(Bl, Acc)]);
+split_block([{set,Ds,[S|Ss],{get_map_elements,Fail}}|Is], Bl, Acc) ->
+ Gets = beam_utils:join_even(Ss,Ds),
+ split_block(Is, [], [{get_map_elements,Fail,S,{list,Gets}}|make_block(Bl, Acc)]);
+split_block([{set,[R],[],{try_catch,Op,L}}|Is], Bl, Acc) ->
+ split_block(Is, [], [{Op,R,L}|make_block(Bl, Acc)]);
split_block([{set,[],[],{line,_}=Line}|Is], Bl, Acc) ->
split_block(Is, [], [Line|make_block(Bl, Acc)]);
split_block([I|Is], Bl, Acc) ->
diff --git a/lib/compiler/src/beam_trim.erl b/lib/compiler/src/beam_trim.erl
index fad9c42584..a8dc6805bc 100644
--- a/lib/compiler/src/beam_trim.erl
+++ b/lib/compiler/src/beam_trim.erl
@@ -1,18 +1,19 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2007-2013. All Rights Reserved.
+%% Copyright Ericsson AB 2007-2016. All Rights Reserved.
%%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
%%
%% %CopyrightEnd%
%%
@@ -172,6 +173,10 @@ remap([{bif,Name,Fail,Ss,D}|Is], Map, Acc) ->
remap([{gc_bif,Name,Fail,Live,Ss,D}|Is], Map, Acc) ->
I = {gc_bif,Name,Fail,Live,[Map(S) || S <- Ss],Map(D)},
remap(Is, Map, [I|Acc]);
+remap([{get_map_elements,Fail,M,{list,L0}}|Is], Map, Acc) ->
+ L = [Map(E) || E <- L0],
+ I = {get_map_elements,Fail,Map(M),{list,L}},
+ remap(Is, Map, [I|Acc]);
remap([{bs_init,Fail,Info,Live,Ss0,Dst0}|Is], Map, Acc) ->
Ss = [Map(Src) || Src <- Ss0],
Dst = Map(Dst0),
@@ -275,6 +280,8 @@ frame_size([{kill,_}|Is], Safe) ->
frame_size(Is, Safe);
frame_size([{make_fun2,_,_,_,_}|Is], Safe) ->
frame_size(Is, Safe);
+frame_size([{get_map_elements,{f,L},_,_}|Is], Safe) ->
+ frame_size_branch(L, Is, Safe);
frame_size([{deallocate,N}|_], _) -> N;
frame_size([{line,_}|Is], Safe) ->
frame_size(Is, Safe);
diff --git a/lib/compiler/src/beam_type.erl b/lib/compiler/src/beam_type.erl
index 3b51216a6c..acaf3ede66 100644
--- a/lib/compiler/src/beam_type.erl
+++ b/lib/compiler/src/beam_type.erl
@@ -1,18 +1,19 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1999-2013. All Rights Reserved.
+%% Copyright Ericsson AB 1999-2016. All Rights Reserved.
%%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
%%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
%%
%% %CopyrightEnd%
%%
@@ -22,7 +23,8 @@
-export([module/2]).
--import(lists, [foldl/3,reverse/1,filter/2]).
+-import(lists, [filter/2,foldl/3,keyfind/3,member/2,
+ reverse/1,reverse/2,sort/1]).
module({Mod,Exp,Attr,Fs0,Lc}, _Opts) ->
Fs = [function(F) || F <- Fs0],
@@ -91,8 +93,19 @@ simplify_basic_1([{set,[D],[TupleReg],{get_tuple_element,0}}=I|Is0], Ts0, Acc) -
Ts = update(I, Ts0),
simplify_basic_1(Is0, Ts, [I|Acc])
end;
-simplify_basic_1([{set,_,_,{'catch',_}}=I|Is], _Ts, Acc) ->
+simplify_basic_1([{set,_,_,{try_catch,_,_}}=I|Is], _Ts, Acc) ->
simplify_basic_1(Is, tdb_new(), [I|Acc]);
+simplify_basic_1([{test,is_atom,_,[R]}=I|Is], Ts, Acc) ->
+ case tdb_find(R, Ts) of
+ boolean -> simplify_basic_1(Is, Ts, Acc);
+ _ -> simplify_basic_1(Is, Ts, [I|Acc])
+ end;
+simplify_basic_1([{test,is_integer,_,[R]}=I|Is], Ts, Acc) ->
+ case tdb_find(R, Ts) of
+ integer -> simplify_basic_1(Is, Ts, Acc);
+ {integer,_} -> simplify_basic_1(Is, Ts, Acc);
+ _ -> simplify_basic_1(Is, Ts, [I|Acc])
+ end;
simplify_basic_1([{test,is_tuple,_,[R]}=I|Is], Ts, Acc) ->
case tdb_find(R, Ts) of
{tuple,_,_} -> simplify_basic_1(Is, Ts, Acc);
@@ -106,6 +119,20 @@ simplify_basic_1([{test,test_arity,_,[R,Arity]}=I|Is], Ts0, Acc) ->
Ts = update(I, Ts0),
simplify_basic_1(Is, Ts, [I|Acc])
end;
+simplify_basic_1([{test,is_map,_,[R]}=I|Is], Ts0, Acc) ->
+ case tdb_find(R, Ts0) of
+ map -> simplify_basic_1(Is, Ts0, Acc);
+ _Other ->
+ Ts = update(I, Ts0),
+ simplify_basic_1(Is, Ts, [I|Acc])
+ end;
+simplify_basic_1([{test,is_nonempty_list,_,[R]}=I|Is], Ts0, Acc) ->
+ case tdb_find(R, Ts0) of
+ nonempty_list -> simplify_basic_1(Is, Ts0, Acc);
+ _Other ->
+ Ts = update(I, Ts0),
+ simplify_basic_1(Is, Ts, [I|Acc])
+ end;
simplify_basic_1([{test,is_eq_exact,Fail,[R,{atom,_}=Atom]}=I|Is0], Ts0, Acc0) ->
Acc = case tdb_find(R, Ts0) of
{atom,_}=Atom -> Acc0;
@@ -122,6 +149,16 @@ simplify_basic_1([{test,is_record,_,[R,{atom,_}=Tag,{integer,Arity}]}=I|Is], Ts0
Ts = update(I, Ts0),
simplify_basic_1(Is, Ts, [I|Acc])
end;
+simplify_basic_1([{select,select_val,Reg,_,_}=I0|Is], Ts, Acc) ->
+ I = case tdb_find(Reg, Ts) of
+ {integer,Range} ->
+ simplify_select_val_int(I0, Range);
+ boolean ->
+ simplify_select_val_bool(I0);
+ _ ->
+ I0
+ end,
+ simplify_basic_1(Is, tdb_new(), [I|Acc]);
simplify_basic_1([I|Is], Ts0, Acc) ->
Ts = update(I, Ts0),
simplify_basic_1(Is, Ts, [I|Acc]);
@@ -129,19 +166,52 @@ simplify_basic_1([], Ts, Acc) ->
Is = reverse(Acc),
{Is,Ts}.
+simplify_select_val_int({select,select_val,R,_,L0}=I, {Min,Max}) ->
+ Vs = sort([V || {integer,V} <- L0]),
+ case eq_ranges(Vs, Min, Max) of
+ false -> I;
+ true -> simplify_select_val_1(L0, {integer,Max}, R, [])
+ end.
+
+simplify_select_val_bool({select,select_val,R,_,L}=I) ->
+ Vs = sort([V || {atom,V} <- L]),
+ case Vs of
+ [false,true] ->
+ simplify_select_val_1(L, {atom,false}, R, []);
+ _ ->
+ I
+ end.
+
+simplify_select_val_1([Val,F|T], Val, R, Acc) ->
+ L = reverse(Acc, T),
+ {select,select_val,R,F,L};
+simplify_select_val_1([V,F|T], Val, R, Acc) ->
+ simplify_select_val_1(T, Val, R, [F,V|Acc]).
+
+eq_ranges([H], H, H) -> true;
+eq_ranges([H|T], H, Max) -> eq_ranges(T, H+1, Max);
+eq_ranges(_, _, _) -> false.
+
%% simplify_float([Instruction], TypeDatabase) ->
%% {[Instruction],TypeDatabase'} | not_possible
%% Simplify floating point operations in blocks.
%%
simplify_float(Is0, Ts0) ->
{Is1,Ts} = simplify_float_1(Is0, Ts0, [], []),
- Is2 = flt_need_heap(Is1),
+ Is2 = opt_fmoves(Is1, []),
+ Is3 = flt_need_heap(Is2),
try
- {flt_liveness(Is2),Ts}
+ {flt_liveness(Is3),Ts}
catch
throw:not_possible -> not_possible
end.
+simplify_float_1([{set,[],[],fclearerror}|Is], Ts, Rs, Acc) ->
+ simplify_float_1(Is, Ts, Rs, clearerror(Acc));
+simplify_float_1([{set,[],[],fcheckerror}|Is], Ts, Rs, Acc) ->
+ simplify_float_1(Is, Ts, Rs, checkerror(Acc));
+simplify_float_1([{set,[{fr,_}],_,_}=I|Is], Ts, Rs, Acc) ->
+ simplify_float_1(Is, Ts, Rs, [I|Acc]);
simplify_float_1([{set,[D0],[A0],{alloc,_,{gc_bif,'-',{f,0}}}}=I|Is]=Is0,
Ts0, Rs0, Acc0) ->
case tdb_find(A0, Ts0) of
@@ -177,19 +247,20 @@ simplify_float_1([{set,[D0],[A0,B0],{alloc,_,{gc_bif,Op0,{f,0}}}}=I|Is]=Is0,
Ts = tdb_update([{D0,float}], Ts0),
simplify_float_1(Is, Ts, Rs, Acc)
end;
-simplify_float_1([{set,_,_,{'catch',_}}=I|Is]=Is0, _Ts, Rs0, Acc0) ->
+simplify_float_1([{set,_,_,{try_catch,_,_}}=I|Is]=Is0, _Ts, Rs0, Acc0) ->
Acc = flush_all(Rs0, Is0, Acc0),
simplify_float_1(Is, tdb_new(), Rs0, [I|Acc]);
simplify_float_1([{set,_,_,{line,_}}=I|Is], Ts, Rs, Acc) ->
simplify_float_1(Is, Ts, Rs, [I|Acc]);
+simplify_float_1([I|Is], Ts0, [], Acc) ->
+ Ts = update(I, Ts0),
+ simplify_float_1(Is, Ts, [], [I|Acc]);
simplify_float_1([I|Is]=Is0, Ts0, Rs0, Acc0) ->
Ts = update(I, Ts0),
{Rs,Acc} = flush(Rs0, Is0, Acc0),
simplify_float_1(Is, Ts, Rs, [I|checkerror(Acc)]);
-simplify_float_1([], Ts, Rs, Acc0) ->
- Acc = checkerror(Acc0),
- Is0 = reverse(flush_all(Rs, [], Acc)),
- Is = opt_fmoves(Is0, []),
+simplify_float_1([], Ts, [], Acc) ->
+ Is = reverse(Acc),
{Is,Ts}.
coerce_to_float({integer,I}=Int) ->
@@ -224,7 +295,7 @@ clearerror([], OrigIs) -> [{set,[],[],fclearerror}|OrigIs].
%% Combine two blocks and eliminate any move instructions that assign
%% to registers that are killed later in the block.
%%
-merge_blocks(B1, [{'%live',_}|B2]) ->
+merge_blocks(B1, [{'%live',_,_}|B2]) ->
merge_blocks_1(B1++[{set,[],[],stop_here}|B2]).
merge_blocks_1([{set,[],_,stop_here}|Is]) -> Is;
@@ -288,7 +359,7 @@ flt_need_heap_2({set,_,_,{get_tuple_element,_}}, H, Fl) ->
{[],H,Fl};
flt_need_heap_2({set,_,_,get_list}, H, Fl) ->
{[],H,Fl};
-flt_need_heap_2({set,_,_,{'catch',_}}, H, Fl) ->
+flt_need_heap_2({set,_,_,{try_catch,_,_}}, H, Fl) ->
{[],H,Fl};
%% All other instructions should cause the insertion of an allocation
%% instruction if needed.
@@ -309,27 +380,27 @@ build_alloc(Words, Floats) -> {alloc,[{words,Words},{floats,Floats}]}.
%% flt_liveness([Instruction]) -> [Instruction]
%% (Re)calculate the number of live registers for each heap allocation
-%% function. We base liveness of the number of live registers at
-%% entry to the instruction sequence.
+%% function. We base liveness of the number of register map at the
+%% beginning of the instruction sequence.
%%
%% A 'not_possible' term will be thrown if the set of live registers
%% is not continous at an allocation function (e.g. if {x,0} and {x,2}
%% are live, but not {x,1}).
-flt_liveness([{'%live',Live}=LiveInstr|Is]) ->
- flt_liveness_1(Is, init_regs(Live), [LiveInstr]).
+flt_liveness([{'%live',_Live,Regs}=LiveInstr|Is]) ->
+ flt_liveness_1(Is, Regs, [LiveInstr]).
-flt_liveness_1([{set,Ds,Ss,{alloc,_,Alloc}}|Is], Regs0, Acc) ->
- Live = live_regs(Regs0),
+flt_liveness_1([{set,Ds,Ss,{alloc,Live0,Alloc}}|Is], Regs0, Acc) ->
+ Live = min(Live0, live_regs(Regs0)),
I = {set,Ds,Ss,{alloc,Live,Alloc}},
- Regs = foldl(fun(R, A) -> set_live(R, A) end, Regs0, Ds),
+ Regs1 = init_regs(Live),
+ Regs = x_live(Ds, Regs1),
flt_liveness_1(Is, Regs, [I|Acc]);
flt_liveness_1([{set,Ds,_,_}=I|Is], Regs0, Acc) ->
- Regs = foldl(fun(R, A) -> set_live(R, A) end, Regs0, Ds),
- flt_liveness_1(Is, Regs, [I|Acc]);
-flt_liveness_1([{'%live',_}=I|Is], Regs, Acc) ->
+ Regs = x_live(Ds, Regs0),
flt_liveness_1(Is, Regs, [I|Acc]);
-flt_liveness_1([], _Regs, Acc) -> reverse(Acc).
+flt_liveness_1([{'%live',_,_}], _Regs, Acc) ->
+ reverse(Acc).
init_regs(Live) ->
(1 bsl Live) - 1.
@@ -344,20 +415,32 @@ live_regs_1(R, N) ->
1 -> live_regs_1(R bsr 1, N+1)
end.
-set_live({x,X}, Regs) -> Regs bor (1 bsl X);
-set_live(_, Regs) -> Regs.
+x_live([{x,N}|Rs], Regs) -> x_live(Rs, Regs bor (1 bsl N));
+x_live([_|Rs], Regs) -> x_live(Rs, Regs);
+x_live([], Regs) -> Regs.
%% update(Instruction, TypeDb) -> NewTypeDb
%% Update the type database to account for executing an instruction.
%%
%% First the cases for instructions inside basic blocks.
-update({'%live',_}, Ts) -> Ts;
+update({'%live',_,_}, Ts) -> Ts;
update({set,[D],[S],move}, Ts) ->
tdb_copy(S, D, Ts);
update({set,[D],[{integer,I},Reg],{bif,element,_}}, Ts0) ->
tdb_update([{Reg,{tuple,I,[]}},{D,kill}], Ts0);
update({set,[D],[_Index,Reg],{bif,element,_}}, Ts0) ->
tdb_update([{Reg,{tuple,0,[]}},{D,kill}], Ts0);
+update({set,[D],Args,{bif,N,_}}, Ts0) ->
+ Ar = length(Args),
+ BoolOp = erl_internal:new_type_test(N, Ar) orelse
+ erl_internal:comp_op(N, Ar) orelse
+ erl_internal:bool_op(N, Ar),
+ case BoolOp of
+ true ->
+ tdb_update([{D,boolean}], Ts0);
+ false ->
+ tdb_update([{D,kill}], Ts0)
+ end;
update({set,[D],[S],{get_tuple_element,0}}, Ts) ->
tdb_update([{D,{tuple_element,S,0}}], Ts);
update({set,[D],[S],{alloc,_,{gc_bif,float,{f,0}}}}, Ts0) ->
@@ -366,6 +449,13 @@ update({set,[D],[S],{alloc,_,{gc_bif,float,{f,0}}}}, Ts0) ->
true -> tdb_update([{D,float}], Ts0);
false -> Ts0
end;
+update({set,[D],[S1,S2],{alloc,_,{gc_bif,'band',{f,0}}}}, Ts) ->
+ case keyfind(integer, 1, [S1,S2]) of
+ {integer,N} ->
+ update_band(N, D, Ts);
+ false ->
+ tdb_update([{D,integer}], Ts)
+ end;
update({set,[D],[S1,S2],{alloc,_,{gc_bif,'/',{f,0}}}}, Ts0) ->
%% Make sure we reject non-numeric literals.
case possibly_numeric(S1) andalso possibly_numeric(S2) of
@@ -373,15 +463,17 @@ update({set,[D],[S1,S2],{alloc,_,{gc_bif,'/',{f,0}}}}, Ts0) ->
false -> Ts0
end;
update({set,[D],[S1,S2],{alloc,_,{gc_bif,Op,{f,0}}}}, Ts0) ->
- case arith_op(Op) of
- no ->
- tdb_update([{D,kill}], Ts0);
- {yes,_} ->
+ case op_type(Op) of
+ integer ->
+ tdb_update([{D,integer}], Ts0);
+ {float,_} ->
case {tdb_find(S1, Ts0),tdb_find(S2, Ts0)} of
{float,_} -> tdb_update([{D,float}], Ts0);
{_,float} -> tdb_update([{D,float}], Ts0);
{_,_} -> tdb_update([{D,kill}], Ts0)
- end
+ end;
+ unknown ->
+ tdb_update([{D,kill}], Ts0)
end;
update({set,[],_Src,_Op}, Ts0) -> Ts0;
update({set,[D],_Src,_Op}, Ts0) ->
@@ -396,6 +488,10 @@ update({test,is_float,_Fail,[Src]}, Ts0) ->
tdb_update([{Src,float}], Ts0);
update({test,test_arity,_Fail,[Src,Arity]}, Ts0) ->
tdb_update([{Src,{tuple,Arity,[]}}], Ts0);
+update({test,is_map,_Fail,[Src]}, Ts0) ->
+ tdb_update([{Src,map}], Ts0);
+update({test,is_nonempty_list,_Fail,[Src]}, Ts0) ->
+ tdb_update([{Src,nonempty_list}], Ts0);
update({test,is_eq_exact,_,[Reg,{atom,_}=Atom]}, Ts) ->
case tdb_find(Reg, Ts) of
error ->
@@ -409,26 +505,72 @@ update({test,is_record,_Fail,[Src,Tag,{integer,Arity}]}, Ts) ->
tdb_update([{Src,{tuple,Arity,[Tag]}}], Ts);
update({test,_Test,_Fail,_Other}, Ts) ->
Ts;
+update({test,bs_get_integer2,_,_,Args,Dst}, Ts) ->
+ tdb_update([{Dst,get_bs_integer_type(Args)}], Ts);
update({call_ext,Ar,{extfunc,math,Math,Ar}}, Ts) ->
case is_math_bif(Math, Ar) of
true -> tdb_update([{{x,0},float}], Ts);
false -> tdb_kill_xregs(Ts)
end;
update({call_ext,3,{extfunc,erlang,setelement,3}}, Ts0) ->
- Op = case tdb_find({x,1}, Ts0) of
- error -> kill;
- Info -> Info
- end,
- Ts1 = tdb_kill_xregs(Ts0),
- tdb_update([{{x,0},Op}], Ts1);
+ Ts = tdb_kill_xregs(Ts0),
+ case tdb_find({x,1}, Ts0) of
+ {tuple,Sz,_}=T0 ->
+ T = case tdb_find({x,0}, Ts0) of
+ {integer,{I,I}} when I > 1 ->
+ %% First element is not changed. The result
+ %% will have the same type.
+ T0;
+ _ ->
+ %% Position is 1 or unknown. May change the
+ %% first element of the tuple.
+ {tuple,Sz,[]}
+ end,
+ tdb_update([{{x,0},T}], Ts);
+ _ ->
+ Ts
+ end;
update({call,_Arity,_Func}, Ts) -> tdb_kill_xregs(Ts);
update({call_ext,_Arity,_Func}, Ts) -> tdb_kill_xregs(Ts);
update({make_fun2,_,_,_,_}, Ts) -> tdb_kill_xregs(Ts);
update({line,_}, Ts) -> Ts;
+update({bs_save2,_,_}, Ts) -> Ts;
+update({bs_restore2,_,_}, Ts) -> Ts;
%% The instruction is unknown. Kill all information.
update(_I, _Ts) -> tdb_new().
+update_band(N, Reg, Ts) ->
+ Type = update_band_1(N, 0),
+ tdb_update([{Reg,Type}], Ts).
+
+update_band_1(N, Bits) when Bits < 64 ->
+ case 1 bsl Bits of
+ P when P =:= N + 1 ->
+ {integer,{0,N}};
+ P when P > N + 1 ->
+ integer;
+ _ ->
+ update_band_1(N, Bits+1)
+ end;
+update_band_1(_, _) ->
+ %% Negative or large positive number. Give up.
+ integer.
+
+get_bs_integer_type([_,{integer,N},U,{field_flags,Fl}])
+ when N*U < 64 ->
+ NumBits = N*U,
+ case member(unsigned, Fl) of
+ true ->
+ {integer,{0,(1 bsl NumBits)-1}};
+ false ->
+ %% Signed integer. Don't bother.
+ integer
+ end;
+get_bs_integer_type(_) ->
+ %% Avoid creating ranges with a huge upper limit.
+ integer.
+
is_math_bif(cos, 1) -> true;
is_math_bif(cosh, 1) -> true;
is_math_bif(sin, 1) -> true;
@@ -445,6 +587,7 @@ is_math_bif(erf, 1) -> true;
is_math_bif(erfc, 1) -> true;
is_math_bif(exp, 1) -> true;
is_math_bif(log, 1) -> true;
+is_math_bif(log2, 1) -> true;
is_math_bif(log10, 1) -> true;
is_math_bif(sqrt, 1) -> true;
is_math_bif(atan2, 2) -> true;
@@ -516,20 +659,31 @@ load_reg(V, Ts, Rs0, Is0) ->
{Rs,Is}
end.
-arith_op('+') -> {yes,fadd};
-arith_op('-') -> {yes,fsub};
-arith_op('*') -> {yes,fmul};
-arith_op('/') -> {yes,fdiv};
-arith_op(_) -> no.
+arith_op(Op) ->
+ case op_type(Op) of
+ {float,Instr} -> {yes,Instr};
+ _ -> no
+ end.
+
+op_type('+') -> {float,fadd};
+op_type('-') -> {float,fsub};
+op_type('*') -> {float,fmul};
+%% '/' and 'band' are specially handled.
+op_type('bor') -> integer;
+op_type('bxor') -> integer;
+op_type('bsl') -> integer;
+op_type('bsr') -> integer;
+op_type('div') -> integer;
+op_type(_) -> unknown.
flush(Rs, [{set,[_],[],{put_tuple,_}}|_]=Is0, Acc0) ->
Acc = flush_all(Rs, Is0, Acc0),
{[],Acc};
flush(Rs0, [{set,Ds,Ss,_Op}|_], Acc0) ->
- Save = gb_sets:from_list(Ss),
+ Save = cerl_sets:from_list(Ss),
Acc = save_regs(Rs0, Save, Acc0),
Rs1 = foldl(fun(S, A) -> mark(S, A, clean) end, Rs0, Ss),
- Kill = gb_sets:from_list(Ds),
+ Kill = cerl_sets:from_list(Ds),
Rs = kill_regs(Rs1, Kill),
{Rs,Acc};
flush(Rs0, Is, Acc0) ->
@@ -552,7 +706,7 @@ save_regs(Rs, Save, Acc) ->
foldl(fun(R, A) -> save_reg(R, Save, A) end, Acc, Rs).
save_reg({I,V,dirty}, Save, Acc) ->
- case gb_sets:is_member(V, Save) of
+ case cerl_sets:is_element(V, Save) of
true -> [{set,[V],[{fr,I}],fmove}|checkerror(Acc)];
false -> Acc
end;
@@ -562,7 +716,7 @@ kill_regs(Rs, Kill) ->
[kill_reg(R, Kill) || R <- Rs].
kill_reg({_,V,_}=R, Kill) ->
- case gb_sets:is_member(V, Kill) of
+ case cerl_sets:is_element(V, Kill) of
true -> free;
false -> R
end;
@@ -589,7 +743,6 @@ checkerror(Is) ->
checkerror_1(Is, Is).
checkerror_1([{set,[],[],fcheckerror}|_], OrigIs) -> OrigIs;
-checkerror_1([{set,[],[],fclearerror}|_], OrigIs) -> OrigIs;
checkerror_1([{set,_,_,{bif,fadd,_}}|_], OrigIs) -> checkerror_2(OrigIs);
checkerror_1([{set,_,_,{bif,fsub,_}}|_], OrigIs) -> checkerror_2(OrigIs);
checkerror_1([{set,_,_,{bif,fmul,_}}|_], OrigIs) -> checkerror_2(OrigIs);
@@ -600,17 +753,20 @@ checkerror_1([], OrigIs) -> OrigIs.
checkerror_2(OrigIs) -> [{set,[],[],fcheckerror}|OrigIs].
-
+
%%% Routines for maintaining a type database. The type database
%%% associates type information with registers.
%%%
%%% {tuple,Size,First} means that the corresponding register contains a
%%% tuple with *at least* Size elements. An tuple with unknown
-%%% size is represented as {tuple,0}. First is either [] (meaning that
+%%% size is represented as {tuple,0,[]}. First is either [] (meaning that
%%% the tuple's first element is unknown) or [FirstElement] (the contents
%%% of the first element).
%%%
%%% 'float' means that the register contains a float.
+%%%
+%%% 'integer' or {integer,{Min,Max}} that the register contains an
+%%% integer.
%% tdb_new() -> EmptyDataBase
%% Creates a new, empty type database.
@@ -640,21 +796,45 @@ tdb_copy({Tag,_}=S, D, Ts) when Tag =:= x; Tag =:= y ->
error -> orddict:erase(D, Ts);
Type -> orddict:store(D, Type, Ts)
end;
-tdb_copy(Literal, D, Ts) -> orddict:store(D, Literal, Ts).
+tdb_copy(Literal, D, Ts) ->
+ Type = case Literal of
+ {atom,_} -> Literal;
+ {float,_} -> float;
+ {integer,Int} -> {integer,{Int,Int}};
+ {literal,[_|_]} -> nonempty_list;
+ {literal,#{}} -> map;
+ {literal,Tuple} when tuple_size(Tuple) >= 1 ->
+ Lit = tag_literal(element(1, Tuple)),
+ {tuple,tuple_size(Tuple),[Lit]};
+ _ -> term
+ end,
+ if
+ Type =:= term ->
+ orddict:erase(D, Ts);
+ true ->
+ verify_type(Type),
+ orddict:store(D, Type, Ts)
+ end.
+
+tag_literal(A) when is_atom(A) -> {atom,A};
+tag_literal(F) when is_float(F) -> {float,F};
+tag_literal(I) when is_integer(I) -> {integer,I};
+tag_literal([]) -> nil;
+tag_literal(Lit) -> {literal,Lit}.
%% tdb_update([UpdateOp], Db) -> NewDb
%% UpdateOp = {Register,kill}|{Register,NewInfo}
%% Updates a type database. If a 'kill' operation is given, the type
%% information for that register will be removed from the database.
%% A kill operation takes precedence over other operations for the same
-%% register (i.e. [{{x,0},kill},{{x,0},{tuple,5}}] means that the
+%% register (i.e. [{{x,0},kill},{{x,0},{tuple,5,[]}}] means that the
%% the existing type information, if any, will be discarded, and the
-%% the '{tuple,5}' information ignored.
+%% the '{tuple,5,[]}' information ignored.
%%
%% If NewInfo information is given and there exists information about
%% the register, the old and new type information will be merged.
-%% For instance, {tuple,5} and {tuple,10} will be merged to produce
-%% {tuple,10}.
+%% For instance, {tuple,5,_} and {tuple,10,_} will be merged to produce
+%% {tuple,10,_}.
tdb_update(Uis0, Ts0) ->
Uis1 = filter(fun ({{x,_},_Op}) -> true;
@@ -665,7 +845,8 @@ tdb_update(Uis0, Ts0) ->
tdb_update1([{Key,kill}|Ops], [{K,_Old}|_]=Db) when Key < K ->
tdb_update1(remove_key(Key, Ops), Db);
-tdb_update1([{Key,_New}=New|Ops], [{K,_Old}|_]=Db) when Key < K ->
+tdb_update1([{Key,Type}=New|Ops], [{K,_Old}|_]=Db) when Key < K ->
+ verify_type(Type),
[New|tdb_update1(Ops, Db)];
tdb_update1([{Key,kill}|Ops], [{Key,_}|Db]) ->
tdb_update1(remove_key(Key, Ops), Db);
@@ -675,7 +856,8 @@ tdb_update1([{_,_}|_]=Ops, [Old|Db]) ->
[Old|tdb_update1(Ops, Db)];
tdb_update1([{Key,kill}|Ops], []) ->
tdb_update1(remove_key(Key, Ops), []);
-tdb_update1([{_,_}=New|Ops], []) ->
+tdb_update1([{_,Type}=New|Ops], []) ->
+ verify_type(Type),
[New|tdb_update1(Ops, [])];
tdb_update1([], Db) -> Db.
@@ -700,10 +882,23 @@ merge_type_info({tuple,Sz1,[]}, {tuple,_Sz2,First}=Tuple2) ->
merge_type_info({tuple,Sz1,First}, Tuple2);
merge_type_info({tuple,_Sz1,First}=Tuple1, {tuple,Sz2,_}) ->
merge_type_info(Tuple1, {tuple,Sz2,First});
+merge_type_info(integer, {integer,_}=Int) ->
+ Int;
+merge_type_info({integer,_}=Int, integer) ->
+ Int;
+merge_type_info({integer,{Min1,Max1}}, {integer,{Min2,Max2}}) ->
+ {integer,{max(Min1, Min2),min(Max1, Max2)}};
merge_type_info(NewType, _) ->
verify_type(NewType),
NewType.
+verify_type({atom,_}) -> ok;
+verify_type(boolean) -> ok;
+verify_type(integer) -> ok;
+verify_type({integer,{Min,Max}})
+ when is_integer(Min), is_integer(Max) -> ok;
+verify_type(map) -> ok;
+verify_type(nonempty_list) -> ok;
verify_type({tuple,Sz,[]}) when is_integer(Sz) -> ok;
verify_type({tuple,Sz,[_]}) when is_integer(Sz) -> ok;
verify_type({tuple_element,_,_}) -> ok;
diff --git a/lib/compiler/src/beam_utils.erl b/lib/compiler/src/beam_utils.erl
index e9911fefd9..a15ecf633e 100644
--- a/lib/compiler/src/beam_utils.erl
+++ b/lib/compiler/src/beam_utils.erl
@@ -1,18 +1,19 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2007-2013. All Rights Reserved.
+%% Copyright Ericsson AB 2007-2016. All Rights Reserved.
%%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
%%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
%%
%% %CopyrightEnd%
%%
@@ -24,7 +25,8 @@
is_not_used/3,is_not_used_at/3,
empty_label_index/0,index_label/3,index_labels/1,
code_at/2,bif_to_test/3,is_pure_test/1,
- live_opt/1,delete_live_annos/1,combine_heap_needs/2]).
+ live_opt/1,delete_live_annos/1,combine_heap_needs/2,
+ join_even/2,split_even/1]).
-import(lists, [member/2,sort/1,reverse/1,splitwith/2]).
@@ -64,8 +66,7 @@ is_killed(R, Is, D) ->
St = #live{bl=check_killed_block_fun(),lbl=D,res=gb_trees:empty()},
case check_liveness(R, Is, St) of
{killed,_} -> true;
- {used,_} -> false;
- {unknown,_} -> false
+ {used,_} -> false
end.
%% is_killed_at(Reg, Lbl, State) -> true|false
@@ -75,8 +76,7 @@ is_killed_at(R, Lbl, D) when is_integer(Lbl) ->
St0 = #live{bl=check_killed_block_fun(),lbl=D,res=gb_trees:empty()},
case check_liveness_at(R, Lbl, St0) of
{killed,_} -> true;
- {used,_} -> false;
- {unknown,_} -> false
+ {used,_} -> false
end.
%% is_not_used(Register, [Instruction], State) -> true|false
@@ -90,8 +90,7 @@ is_not_used(R, Is, D) ->
St = #live{bl=fun check_used_block/3,lbl=D,res=gb_trees:empty()},
case check_liveness(R, Is, St) of
{killed,_} -> true;
- {used,_} -> false;
- {unknown,_} -> false
+ {used,_} -> false
end.
%% is_not_used(Register, [Instruction], State) -> true|false
@@ -105,8 +104,7 @@ is_not_used_at(R, Lbl, D) ->
St = #live{bl=fun check_used_block/3,lbl=D,res=gb_trees:empty()},
case check_liveness_at(R, Lbl, St) of
{killed,_} -> true;
- {used,_} -> false;
- {unknown,_} -> false
+ {used,_} -> false
end.
%% index_labels(FunctionIs) -> State
@@ -126,8 +124,7 @@ empty_label_index() ->
%% Add an index for a label.
index_label(Lbl, Is0, Acc) ->
- Is = lists:dropwhile(fun({label,_}) -> true;
- (_) -> false end, Is0),
+ Is = drop_labels(Is0),
gb_trees:enter(Lbl, Is, Acc).
@@ -135,10 +132,7 @@ index_label(Lbl, Is0, Acc) ->
%% Retrieve the code at the given label.
code_at(L, Ll) ->
- case gb_trees:lookup(L, Ll) of
- {value,Code} -> Code;
- none -> none
- end.
+ gb_trees:get(L, Ll).
%% bif_to_test(Bif, [Op], Fail) -> {test,Test,Fail,[Op]}
%% Convert a BIF to a test. Fail if not possible.
@@ -152,6 +146,7 @@ bif_to_test(is_function, [_]=Ops, Fail) -> {test,is_function,Fail,Ops};
bif_to_test(is_function, [_,_]=Ops, Fail) -> {test,is_function2,Fail,Ops};
bif_to_test(is_integer, [_]=Ops, Fail) -> {test,is_integer,Fail,Ops};
bif_to_test(is_list, [_]=Ops, Fail) -> {test,is_list,Fail,Ops};
+bif_to_test(is_map, [_]=Ops, Fail) -> {test,is_map,Fail,Ops};
bif_to_test(is_number, [_]=Ops, Fail) -> {test,is_number,Fail,Ops};
bif_to_test(is_pid, [_]=Ops, Fail) -> {test,is_pid,Fail,Ops};
bif_to_test(is_port, [_]=Ops, Fail) -> {test,is_port,Fail,Ops};
@@ -161,10 +156,10 @@ bif_to_test('=<', [A,B], Fail) -> {test,is_ge,Fail,[B,A]};
bif_to_test('>', [A,B], Fail) -> {test,is_lt,Fail,[B,A]};
bif_to_test('<', [_,_]=Ops, Fail) -> {test,is_lt,Fail,Ops};
bif_to_test('>=', [_,_]=Ops, Fail) -> {test,is_ge,Fail,Ops};
-bif_to_test('==', [A,[]], Fail) -> {test,is_nil,Fail,[A]};
+bif_to_test('==', [A,nil], Fail) -> {test,is_nil,Fail,[A]};
bif_to_test('==', [_,_]=Ops, Fail) -> {test,is_eq,Fail,Ops};
bif_to_test('/=', [_,_]=Ops, Fail) -> {test,is_ne,Fail,Ops};
-bif_to_test('=:=', [A,[]], Fail) -> {test,is_nil,Fail,[A]};
+bif_to_test('=:=', [A,nil], Fail) -> {test,is_nil,Fail,[A]};
bif_to_test('=:=', [_,_]=Ops, Fail) -> {test,is_eq_exact,Fail,Ops};
bif_to_test('=/=', [_,_]=Ops, Fail) -> {test,is_ne_exact,Fail,Ops};
bif_to_test(is_record, [_,_,_]=Ops, Fail) -> {test,is_record,Fail,Ops}.
@@ -172,8 +167,7 @@ bif_to_test(is_record, [_,_,_]=Ops, Fail) -> {test,is_record,Fail,Ops}.
%% is_pure_test({test,Op,Fail,Ops}) -> true|false.
%% Return 'true' if the test instruction does not modify any
-%% registers and/or bit syntax matching state, nor modifies
-%% any bit syntax matching state.
+%% registers and/or bit syntax matching state.
%%
is_pure_test({test,is_eq,_,[_,_]}) -> true;
is_pure_test({test,is_ne,_,[_,_]}) -> true;
@@ -184,6 +178,9 @@ is_pure_test({test,is_lt,_,[_,_]}) -> true;
is_pure_test({test,is_nil,_,[_]}) -> true;
is_pure_test({test,is_nonempty_list,_,[_]}) -> true;
is_pure_test({test,test_arity,_,[_,_]}) -> true;
+is_pure_test({test,has_map_fields,_,[_|_]}) -> true;
+is_pure_test({test,is_bitstr,_,[_]}) -> true;
+is_pure_test({test,is_function2,_,[_,_]}) -> true;
is_pure_test({test,Op,_,Ops}) ->
erl_internal:new_type_test(Op, length(Ops)).
@@ -192,7 +189,7 @@ is_pure_test({test,Op,_,Ops}) ->
%% Go through the instruction sequence in reverse execution
%% order, keep track of liveness and remove 'move' instructions
%% whose destination is a register that will not be used.
-%% Also insert {'%live',Live} annotations at the beginning
+%% Also insert {'%live',Live,Regs} annotations at the beginning
%% and end of each block.
%%
live_opt(Is0) ->
@@ -213,7 +210,7 @@ delete_live_annos([{block,Bl0}|Is]) ->
[] -> delete_live_annos(Is);
[_|_]=Bl -> [{block,Bl}|delete_live_annos(Is)]
end;
-delete_live_annos([{'%live',_}|Is]) ->
+delete_live_annos([{'%live',_,_}|Is]) ->
delete_live_annos(Is);
delete_live_annos([I|Is]) ->
[I|delete_live_annos(Is)];
@@ -231,21 +228,28 @@ combine_heap_needs(Words, {alloc,Alloc}) when is_integer(Words) ->
combine_heap_needs(H1, H2) when is_integer(H1), is_integer(H2) ->
H1+H2.
+%% split_even/1
+%% [1,2,3,4,5,6] -> {[1,3,5],[2,4,6]}
+
+split_even(Rs) -> split_even(Rs, [], []).
+
+%% join_even/1
+%% {[1,3,5],[2,4,6]} -> [1,2,3,4,5,6]
+
+join_even([], []) -> [];
+join_even([S|Ss], [D|Ds]) -> [S,D|join_even(Ss, Ds)].
+
%%%
%%% Local functions.
%%%
-%% check_liveness(Reg, [Instruction], {State,BlockCheckFun}) ->
-%% {killed | used | unknown,UpdateState}
-%% Finds out how Reg is used in the instruction sequence. Returns one of:
-%% killed - Reg is assigned a new value or killed by an allocation instruction
-%% used - Reg is used (or possibly referenced by an allocation instruction)
-%% unknown - not possible to determine (perhaps because of an instruction
-%% that we don't recognize)
+%% check_liveness(Reg, [Instruction], #live{}) ->
+%% {killed | used, #live{}}
+%% Find out whether Reg is used or killed in instruction sequence.
+%% 'killed' means that Reg is assigned a new value or killed by an
+%% allocation instruction. 'used' means that Reg is used in some way.
-check_liveness(R, [{set,_,_,_}=I|_], St) ->
- erlang:error(only_allowed_in_blocks, [R,I,St]);
check_liveness(R, [{block,Blk}|Is], #live{bl=BlockCheck}=St0) ->
case BlockCheck(R, Blk, St0) of
{transparent,St} -> check_liveness(R, Is, St);
@@ -321,8 +325,11 @@ check_liveness(R, [{deallocate,_}|Is], St) ->
{y,_} -> {killed,St};
_ -> check_liveness(R, Is, St)
end;
-check_liveness(R, [return|_], St) ->
- check_liveness_live_ret(R, 1, St);
+check_liveness({x,_}=R, [return|_], St) ->
+ case R of
+ {x,0} -> {used,St};
+ {x,_} -> {killed,St}
+ end;
check_liveness(R, [{call,Live,_}|Is], St) ->
case R of
{x,X} when X < Live -> {used,St};
@@ -340,14 +347,10 @@ check_liveness(R, [{call_ext,Live,_}=I|Is], St) ->
false ->
check_liveness(R, Is, St);
true ->
- %% We must make sure we don't check beyond this instruction
- %% or we will fall through into random unrelated code and
- %% get stuck in a loop.
- %%
- %% We don't want to overwrite a 'catch', so consider this
- %% register in use.
- %%
- {used,St}
+ %% We must make sure we don't check beyond this
+ %% instruction or we will fall through into random
+ %% unrelated code and get stuck in a loop.
+ {killed,St}
end
end;
check_liveness(R, [{call_fun,Live}|Is], St) ->
@@ -362,11 +365,6 @@ check_liveness(R, [{apply,Args}|Is], St) ->
{x,_} -> {killed,St};
{y,_} -> check_liveness(R, Is, St)
end;
-check_liveness({x,R}, [{'%live',Live}|Is], St) ->
- if
- R < Live -> check_liveness(R, Is, St);
- true -> {killed,St}
- end;
check_liveness(R, [{bif,Op,{f,Fail},Ss,D}|Is], St0) ->
case check_liveness_fail(R, Op, Ss, Fail, St0) of
{killed,St} = Killed ->
@@ -466,20 +464,54 @@ check_liveness(R, [{loop_rec,{f,_},{x,0}}|_], St) ->
{x,_} ->
{killed,St};
_ ->
- %% y register. Rarely happens. Be very conversative.
- {unknown,St}
+ %% y register. Rarely happens. Be very conversative and
+ %% assume it's used.
+ {used,St}
end;
check_liveness(R, [{loop_rec_end,{f,Fail}}|_], St) ->
check_liveness_at(R, Fail, St);
check_liveness(R, [{line,_}|Is], St) ->
check_liveness(R, Is, St);
+check_liveness(R, [{get_map_elements,{f,Fail},S,{list,L}}|Is], St0) ->
+ {Ss,Ds} = split_even(L),
+ case member(R, [S|Ss]) of
+ true ->
+ {used,St0};
+ false ->
+ case check_liveness_at(R, Fail, St0) of
+ {killed,St}=Killed ->
+ case member(R, Ds) of
+ true -> Killed;
+ false -> check_liveness(R, Is, St)
+ end;
+ Other ->
+ Other
+ end
+ end;
+check_liveness(R, [{put_map,{f,_},_,Src,_D,Live,{list,_}}|_], St0) ->
+ case R of
+ Src ->
+ {used,St0};
+ {x,X} when X < Live ->
+ {used,St0};
+ {x,_} ->
+ {killed,St0};
+ {y,_} ->
+ %% Conservatively mark it as used.
+ {used,St0}
+ end;
+check_liveness(R, [{test_heap,N,Live}|Is], St) ->
+ I = {block,[{set,[],[],{alloc,Live,{nozero,nostack,N,[]}}}]},
+ check_liveness(R, [I|Is], St);
+check_liveness(R, [{allocate_zero,N,Live}|Is], St) ->
+ I = {block,[{set,[],[],{alloc,Live,{zero,N,0,[]}}}]},
+ check_liveness(R, [I|Is], St);
+check_liveness(R, [{get_list,S,D1,D2}|Is], St) ->
+ I = {block,[{set,[D1,D2],[S],get_list}]},
+ check_liveness(R, [I|Is], St);
check_liveness(_R, Is, St) when is_list(Is) ->
-%% case Is of
-%% [I|_] ->
-%% io:format("~p ~p\n", [_R,I]);
-%% _ -> ok
-%% end,
- {unknown,St}.
+ %% Not implemented. Conservatively assume that the register is used.
+ {used,St}.
check_liveness_everywhere(R, [{f,Lbl}|T], St0) ->
case check_liveness_at(R, Lbl, St0) of
@@ -498,7 +530,7 @@ check_liveness_at(R, Lbl, #live{lbl=Ll,res=ResMemorized}=St0) ->
none ->
{Res,St} = case gb_trees:lookup(Lbl, Ll) of
{value,Is} -> check_liveness(R, Is, St0);
- none -> {unknown,St0}
+ none -> {used,St0}
end,
{Res,St#live{res=gb_trees:insert(Lbl, Res, St#live.res)}}
end.
@@ -506,14 +538,6 @@ check_liveness_at(R, Lbl, #live{lbl=Ll,res=ResMemorized}=St0) ->
check_liveness_ret(R, R, St) -> {used,St};
check_liveness_ret(_, _, St) -> {killed,St}.
-check_liveness_live_ret({x,R}, Live, St) ->
- if
- R < Live -> {used,St};
- true -> {killed,St}
- end;
-check_liveness_live_ret({y,_}, _, St) ->
- {killed,St}.
-
check_liveness_fail(_, _, _, 0, St) ->
{killed,St};
check_liveness_fail(R, Op, Args, Fail, St) ->
@@ -550,9 +574,9 @@ check_killed_block(R, [{set,Ds,Ss,_Op}|Is]) ->
false -> check_killed_block(R, Is)
end
end;
-check_killed_block(R, [{'%live',Live}|Is]) ->
+check_killed_block(R, [{'%live',_,Regs}|Is]) ->
case R of
- {x,X} when X >= Live -> killed;
+ {x,X} when (Regs bsr X) band 1 =:= 0 -> killed;
_ -> check_killed_block(R, Is)
end;
check_killed_block(_, []) -> transparent.
@@ -563,8 +587,10 @@ check_killed_block(_, []) -> transparent.
%% killed - Reg is assigned a new value or killed by an allocation instruction
%% transparent - Reg is neither used nor killed
%% used - Reg is explicitly used by an instruction
-%%
-%% (Unknown instructions will cause an exception.)
+%%
+%% '%live' annotations are not allowed.
+%%
+%% (Unknown instructions will cause an exception.)
check_used_block({x,X}=R, [{set,Ds,Ss,{alloc,Live,Op}}|Is], St) ->
if
@@ -573,11 +599,6 @@ check_used_block({x,X}=R, [{set,Ds,Ss,{alloc,Live,Op}}|Is], St) ->
end;
check_used_block(R, [{set,Ds,Ss,Op}|Is], St) ->
check_used_block_1(R, Ss, Ds, Op, Is, St);
-check_used_block(R, [{'%live',Live}|Is], St) ->
- case R of
- {x,X} when X >= Live -> {killed,St};
- _ -> check_used_block(R, Is, St)
- end;
check_used_block(_, [], St) -> {transparent,St}.
check_used_block_1(R, Ss, Ds, Op, Is, St0) ->
@@ -608,18 +629,19 @@ is_reg_used_at_1(_, 0, St) ->
is_reg_used_at_1(R, Lbl, St0) ->
case check_liveness_at(R, Lbl, St0) of
{killed,St} -> {false,St};
- {used,St} -> {true,St};
- {unknown,St} -> {true,St}
+ {used,St} -> {true,St}
end.
index_labels_1([{label,Lbl}|Is0], Acc) ->
- Is = lists:dropwhile(fun({label,_}) -> true;
- (_) -> false end, Is0),
+ Is = drop_labels(Is0),
index_labels_1(Is0, [{Lbl,Is}|Acc]);
index_labels_1([_|Is], Acc) ->
index_labels_1(Is, Acc);
index_labels_1([], Acc) -> gb_trees:from_orddict(sort(Acc)).
+drop_labels([{label,_}|Is]) -> drop_labels(Is);
+drop_labels(Is) -> Is.
+
%% Help functions for combine_heap_needs.
combine_alloc_lists(Al1, Al2) ->
@@ -674,9 +696,9 @@ live_opt([{test,bs_start_match2,Fail,Live,[Src,_],_}=I|Is], _, D, Acc) ->
%% Other instructions.
live_opt([{block,Bl0}|Is], Regs0, D, Acc) ->
- Live0 = {'%live',live_regs(Regs0)},
+ Live0 = {'%live',live_regs(Regs0),Regs0},
{Bl,Regs} = live_opt_block(reverse(Bl0), Regs0, D, [Live0]),
- Live = {'%live',live_regs(Regs)},
+ Live = {'%live',live_regs(Regs),Regs},
live_opt(Is, Regs, D, [{block,[Live|Bl]}|Acc]);
live_opt([{label,L}=I|Is], Regs, D0, Acc) ->
D = gb_trees:insert(L, Regs, D0),
@@ -723,11 +745,6 @@ live_opt([{select,_,Src,Fail,List}=I|Is], Regs0, D, Acc) ->
Regs1 = x_live([Src], Regs0),
Regs = live_join_labels([Fail|List], D, Regs1),
live_opt(Is, Regs, D, [I|Acc]);
-live_opt([{'try',_,_}=I|Is], Regs, D, Acc) ->
- %% If an exeption happens, all x registers will be killed.
- %% Therefore, we should only base liveness of the code inside
- %% the try.
- live_opt(Is, Regs, D, [I|Acc]);
live_opt([{try_case,_}=I|Is], _, D, Acc) ->
live_opt(Is, live_call(1), D, [I|Acc]);
live_opt([{loop_rec,_Fail,_Dst}=I|Is], _, D, Acc) ->
@@ -746,19 +763,23 @@ live_opt([{try_end,_}=I|Is], Regs, D, Acc) ->
live_opt(Is, Regs, D, [I|Acc]);
live_opt([{loop_rec_end,_}=I|Is], Regs, D, Acc) ->
live_opt(Is, Regs, D, [I|Acc]);
+live_opt([{wait_timeout,_,nil}=I|Is], Regs, D, Acc) ->
+ live_opt(Is, Regs, D, [I|Acc]);
live_opt([{wait_timeout,_,{Tag,_}}=I|Is], Regs, D, Acc) when Tag =/= x ->
live_opt(Is, Regs, D, [I|Acc]);
live_opt([{line,_}=I|Is], Regs, D, Acc) ->
live_opt(Is, Regs, D, [I|Acc]);
%% The following instructions can occur if the "compilation" has been
-%% started from a .S file using the 'asm' option.
+%% started from a .S file using the 'from_asm' option.
live_opt([{trim,_,_}=I|Is], Regs, D, Acc) ->
live_opt(Is, Regs, D, [I|Acc]);
-live_opt([{allocate,_,Live}=I|Is], _, D, Acc) ->
- live_opt(Is, live_call(Live), D, [I|Acc]);
-live_opt([{allocate_heap,_,_,Live}=I|Is], _, D, Acc) ->
- live_opt(Is, live_call(Live), D, [I|Acc]);
+live_opt([{'%',_}=I|Is], Regs, D, Acc) ->
+ live_opt(Is, Regs, D, [I|Acc]);
+live_opt([{recv_set,_}=I|Is], Regs, D, Acc) ->
+ live_opt(Is, Regs, D, [I|Acc]);
+live_opt([{recv_mark,_}=I|Is], Regs, D, Acc) ->
+ live_opt(Is, Regs, D, [I|Acc]);
live_opt([], _, _, Acc) -> Acc.
@@ -822,3 +843,8 @@ x_live([_|Rs], Regs) -> x_live(Rs, Regs);
x_live([], Regs) -> Regs.
is_live(X, Regs) -> ((Regs bsr X) band 1) =:= 1.
+
+split_even([], Ss, Ds) ->
+ {reverse(Ss),reverse(Ds)};
+split_even([S,D|Rs], Ss, Ds) ->
+ split_even(Rs, [S|Ss], [D|Ds]).
diff --git a/lib/compiler/src/beam_validator.erl b/lib/compiler/src/beam_validator.erl
index eb72290306..4c0cb6780a 100644
--- a/lib/compiler/src/beam_validator.erl
+++ b/lib/compiler/src/beam_validator.erl
@@ -1,18 +1,19 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2004-2013. All Rights Reserved.
+%% Copyright Ericsson AB 2004-2016. All Rights Reserved.
%%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
%%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
%%
%% %CopyrightEnd%
@@ -22,56 +23,20 @@
%% Avoid warning for local function error/1 clashing with autoimported BIF.
-compile({no_auto_import,[error/1]}).
--export([file/1, files/1]).
%% Interface for compiler.
-export([module/2, format_error/1]).
-include("beam_disasm.hrl").
--import(lists, [reverse/1,foldl/3,foreach/2,member/2,dropwhile/2]).
-
--define(MAXREG, 1024).
-
-%%-define(DEBUG, 1).
--ifdef(DEBUG).
--define(DBG_FORMAT(F, D), (io:format((F), (D)))).
--else.
--define(DBG_FORMAT(F, D), ok).
--endif.
-
-%%%
-%%% API functions.
-%%%
-
--spec file(file:filename()) -> 'ok' | {'error', term()}.
-
-file(Name) when is_list(Name) ->
- case case filename:extension(Name) of
- ".S" -> s_file(Name);
- ".beam" -> beam_file(Name)
- end of
- [] -> ok;
- Es -> {error,Es}
- end.
-
--spec files([file:filename()]) -> 'ok'.
-
-files([F|Fs]) ->
- ?DBG_FORMAT("# Verifying: ~p~n", [F]),
- case file(F) of
- ok -> ok;
- {error,Es} ->
- io:format("~tp:~n~ts~n", [F,format_error(Es)])
- end,
- files(Fs);
-files([]) -> ok.
+-import(lists, [reverse/1,foldl/3,foreach/2,dropwhile/2]).
%% To be called by the compiler.
module({Mod,Exp,Attr,Fs,Lc}=Code, _Opts)
when is_atom(Mod), is_list(Exp), is_list(Attr), is_integer(Lc) ->
case validate(Mod, Fs) of
- [] -> {ok,Code};
+ [] ->
+ {ok,Code};
Es0 ->
Es = [{?MODULE,E} || E <- Es0],
{error,[{atom_to_list(Mod),Es}]}
@@ -79,12 +44,6 @@ module({Mod,Exp,Attr,Fs,Lc}=Code, _Opts)
-spec format_error(term()) -> iolist().
-format_error([]) -> [];
-format_error([{{M,F,A},{I,Off,Desc}}|Es]) ->
- [io_lib:format(" ~p:~p/~p+~p:~n ~p - ~p~n",
- [M,F,A,Off,I,Desc])|format_error(Es)];
-format_error([Error|Es]) ->
- [format_error(Error)|format_error(Es)];
format_error({{_M,F,A},{I,Off,limit}}) ->
io_lib:format(
"function ~p/~p+~p:~n"
@@ -103,8 +62,6 @@ format_error({{_M,F,A},{I,Off,Desc}}) ->
" Internal consistency check failed - please report this bug.~n"
" Instruction: ~p~n"
" Error: ~p:~n", [F,A,Off,I,Desc]);
-format_error({Module,Error}) ->
- [Module:format_error(Error)];
format_error(Error) ->
io_lib:format("~p~n", [Error]).
@@ -112,36 +69,6 @@ format_error(Error) ->
%%% Local functions follow.
%%%
-s_file(Name) ->
- {ok,Is} = file:consult(Name),
- {module,Module} = lists:keyfind(module, 1, Is),
- Fs = find_functions(Is),
- validate(Module, Fs).
-
-find_functions(Fs) ->
- find_functions_1(Fs, none, [], []).
-
-find_functions_1([{function,Name,Arity,Entry}|Is], Func, FuncAcc, Acc0) ->
- Acc = add_func(Func, FuncAcc, Acc0),
- find_functions_1(Is, {Name,Arity,Entry}, [], Acc);
-find_functions_1([I|Is], Func, FuncAcc, Acc) ->
- find_functions_1(Is, Func, [I|FuncAcc], Acc);
-find_functions_1([], Func, FuncAcc, Acc) ->
- reverse(add_func(Func, FuncAcc, Acc)).
-
-add_func(none, _, Acc) -> Acc;
-add_func({Name,Arity,Entry}, Is, Acc) ->
- [{function,Name,Arity,Entry,reverse(Is)}|Acc].
-
-beam_file(Name) ->
- try beam_disasm:file(Name) of
- {error,beam_lib,Reason} -> [{beam_lib,Reason}];
- #beam_file{module=Module, code=Code0} ->
- Code = normalize_disassembled_code(Code0),
- validate(Module, Code)
- catch _:_ -> [disassembly_failed]
- end.
-
%%%
%%% The validator follows.
%%%
@@ -196,68 +123,63 @@ validate_0(Module, [{function,Name,Ar,Entry,Code}|Fs], Ft) ->
try validate_1(Code, Name, Ar, Entry, Ft) of
_ -> validate_0(Module, Fs, Ft)
catch
- Error ->
+ throw:Error ->
+ %% Controlled error.
[Error|validate_0(Module, Fs, Ft)];
- error:Error ->
- [validate_error(Error, Module, Name, Ar)|validate_0(Module, Fs, Ft)]
+ Class:Error ->
+ %% Crash.
+ Stack = erlang:get_stacktrace(),
+ io:fwrite("Function: ~w/~w\n", [Name,Ar]),
+ erlang:raise(Class, Error, Stack)
end.
--ifdef(DEBUG).
-validate_error(Error, Module, Name, Ar) ->
- exit(validate_error_1(Error, Module, Name, Ar)).
--else.
-validate_error(Error, Module, Name, Ar) ->
- validate_error_1(Error, Module, Name, Ar).
--endif.
-validate_error_1(Error, Module, Name, Ar) ->
- {{Module,Name,Ar},
- {internal_error,'_',{Error,erlang:get_stacktrace()}}}.
+-type index() :: non_neg_integer().
+-type reg_tab() :: gb_trees:tree(index(), 'none' | {'value', _}).
-record(st, %Emulation state
- {x=init_regs(0, term) :: gb_tree(), %x register info.
- y=init_regs(0, initialized) :: gb_tree(), %y register info.
+ {x=init_regs(0, term) :: reg_tab(),%x register info.
+ y=init_regs(0, initialized) :: reg_tab(),%y register info.
f=init_fregs(), %
numy=none, %Number of y registers.
h=0, %Available heap size.
hf=0, %Available heap size for floats.
fls=undefined, %Floating point state.
ct=[], %List of hot catch/try labels
- bsm=undefined, %Bit syntax matching state.
- bits=undefined, %Number of bits in bit syntax binary.
setelem=false %Previous instruction was setelement/3.
}).
+-type label() :: integer().
+-type label_set() :: gb_sets:set(label()).
+-type branched_tab() :: gb_trees:tree(label(), #st{}).
+-type ft_tab() :: gb_trees:tree().
+
-record(vst, %Validator state
{current=none :: #st{} | 'none', %Current state
- branched=gb_trees:empty() :: gb_tree(), %States at jumps
- labels=gb_sets:empty() :: gb_set(), %All defined labels
- ft=gb_trees:empty() :: gb_tree() %Some other functions
+ branched=gb_trees:empty() :: branched_tab(), %States at jumps
+ labels=gb_sets:empty() :: label_set(), %All defined labels
+ ft=gb_trees:empty() :: ft_tab() %Some other functions
% in the module (those that start with bs_start_match2).
}).
--ifdef(DEBUG).
-print_st(#st{x=Xs,y=Ys,numy=NumY,h=H,ct=Ct}) ->
- io:format(" #st{x=~p~n"
- " y=~p~n"
- " numy=~p,h=~p,ct=~w~n",
- [gb_trees:to_list(Xs),gb_trees:to_list(Ys),NumY,H,Ct]).
--endif.
+%% Match context type.
+-record(ms,
+ {id=make_ref() :: reference(), %Unique ID.
+ valid=0 :: non_neg_integer(), %Valid slots
+ slots=0 :: non_neg_integer() %Number of slots
+ }).
validate_1(Is, Name, Arity, Entry, Ft) ->
validate_2(labels(Is), Name, Arity, Entry, Ft).
validate_2({Ls1,[{func_info,{atom,Mod},{atom,Name},Arity}=_F|Is]},
Name, Arity, Entry, Ft) ->
- lists:foreach(fun (_L) -> ?DBG_FORMAT(" ~p.~n", [{label,_L}]) end, Ls1),
- ?DBG_FORMAT(" ~p.~n", [_F]),
validate_3(labels(Is), Name, Arity, Entry, Mod, Ls1, Ft);
validate_2({Ls1,Is}, Name, Arity, _Entry, _Ft) ->
error({{'_',Name,Arity},{first(Is),length(Ls1),illegal_instruction}}).
validate_3({Ls2,Is}, Name, Arity, Entry, Mod, Ls1, Ft) ->
- lists:foreach(fun (_L) -> ?DBG_FORMAT(" ~p.~n", [{label,_L}]) end, Ls2),
Offset = 1 + length(Ls1) + 1 + length(Ls2),
- EntryOK = (Entry =:= undefined) orelse lists:member(Entry, Ls2),
+ EntryOK = lists:member(Entry, Ls2),
if
EntryOK ->
St = init_state(Arity),
@@ -300,7 +222,7 @@ labels_1([{label,L}|Is], R) ->
labels_1([{line,_}|Is], R) ->
labels_1(Is, R);
labels_1(Is, R) ->
- {lists:reverse(R),Is}.
+ {reverse(R),Is}.
init_state(Arity) ->
Xs = init_regs(Arity, term),
@@ -325,7 +247,6 @@ valfun([], MFA, _Offset, #vst{branched=Targets0,labels=Labels0}=Vst) ->
error({MFA,Error})
end;
valfun([I|Is], MFA, Offset, Vst0) ->
- ?DBG_FORMAT(" ~p.\n", [I]),
valfun(Is, MFA, Offset+1,
try
Vst = val_dsetel(I, Vst0),
@@ -343,7 +264,6 @@ valfun_1({label,Lbl}, #vst{current=St0,branched=B,labels=Lbls}=Vst) ->
valfun_1(_I, #vst{current=none}=Vst) ->
%% Ignore instructions after erlang:error/1,2, which
%% the original R10B compiler thought would return.
- ?DBG_FORMAT("Ignoring ~p\n", [_I]),
Vst;
valfun_1({badmatch,Src}, Vst) ->
assert_term(Src, Vst),
@@ -361,7 +281,7 @@ valfun_1({bs_context_to_binary,Ctx}, #vst{current=#st{x=Xs}}=Vst) ->
case Ctx of
{Tag,X} when Tag =:= x; Tag =:= y ->
Type = case gb_trees:lookup(X, Xs) of
- {value,{match_context,_,_}} -> term;
+ {value,#ms{}} -> term;
_ -> get_term_type(Ctx, Vst)
end,
set_type_reg(Type, Ctx, Vst);
@@ -395,10 +315,6 @@ valfun_1({init,{y,_}=Reg}, Vst) ->
set_type_y(initialized, Reg, Vst);
valfun_1({test_heap,Heap,Live}, Vst) ->
test_heap(Heap, Live, Vst);
-valfun_1({bif,_Op,nofail,Src,Dst}, Vst) ->
- %% The 'nofail' atom only occurs in disassembled code.
- validate_src(Src, Vst),
- set_type_reg(term, Dst, Vst);
valfun_1({bif,Op,{f,_},Src,Dst}=I, Vst) ->
case is_bif_safe(Op, length(Src)) of
false ->
@@ -424,18 +340,12 @@ valfun_1({put_tuple,Sz,Dst}, Vst0) when is_integer(Sz) ->
valfun_1({put,Src}, Vst) ->
assert_term(Src, Vst),
eat_heap(1, Vst);
-valfun_1({put_string,Sz,_,Dst}, Vst0) when is_integer(Sz) ->
- Vst = eat_heap(2*Sz, Vst0),
- set_type_reg(cons, Dst, Vst);
%% Instructions for optimization of selective receives.
valfun_1({recv_mark,{f,Fail}}, Vst) when is_integer(Fail) ->
Vst;
valfun_1({recv_set,{f,Fail}}, Vst) when is_integer(Fail) ->
Vst;
%% Misc.
-valfun_1({'%live',Live}, Vst) ->
- verify_live(Live, Vst),
- Vst;
valfun_1(remove_message, Vst) ->
Vst;
valfun_1({'%',_}, Vst) ->
@@ -486,37 +396,33 @@ valfun_1({'try',Dst,{f,Fail}}, Vst0) ->
Vst = #vst{current=#st{ct=Fails}=St} =
set_type_y({trytag,[Fail]}, Dst, Vst0),
Vst#vst{current=St#st{ct=[[Fail]|Fails]}};
-valfun_1({catch_end,Reg}, #vst{current=#st{ct=[Fail|Fails]}=St0}=Vst0) ->
+valfun_1({catch_end,Reg}, #vst{current=#st{ct=[Fail|Fails]}}=Vst0) ->
case get_special_y_type(Reg, Vst0) of
{catchtag,Fail} ->
- Vst = #vst{current=St} =
- set_type_y(initialized_ct, Reg,
- Vst0#vst{current=St0#st{ct=Fails}}),
+ Vst = #vst{current=St} = set_catch_end(Reg, Vst0),
Xs = gb_trees_from_list([{0,term}]),
- Vst#vst{current=St#st{x=Xs,fls=undefined}};
+ Vst#vst{current=St#st{x=Xs,ct=Fails,fls=undefined}};
Type ->
error({bad_type,Type})
end;
-valfun_1({try_end,Reg}, #vst{current=#st{ct=[Fail|Fails]}=St}=Vst0) ->
+valfun_1({try_end,Reg}, #vst{current=#st{ct=[Fail|Fails]}=St0}=Vst0) ->
case get_special_y_type(Reg, Vst0) of
{trytag,Fail} ->
Vst = case Fail of
[FailLabel] -> branch_state(FailLabel, Vst0);
_ -> Vst0
end,
- set_type_reg(initialized_ct, Reg,
- Vst#vst{current=St#st{ct=Fails,fls=undefined}});
+ St = St0#st{ct=Fails,fls=undefined},
+ set_catch_end(Reg, Vst#vst{current=St});
Type ->
error({bad_type,Type})
end;
-valfun_1({try_case,Reg}, #vst{current=#st{ct=[Fail|Fails]}=St0}=Vst0) ->
+valfun_1({try_case,Reg}, #vst{current=#st{ct=[Fail|Fails]}}=Vst0) ->
case get_special_y_type(Reg, Vst0) of
{trytag,Fail} ->
- Vst = #vst{current=St} =
- set_type_y(initialized_ct, Reg,
- Vst0#vst{current=St0#st{ct=Fails}}),
- Xs = gb_trees_from_list([{0,{atom,[]}},{1,term},{2,term}]), %XXX
- Vst#vst{current=St#st{x=Xs,fls=undefined}};
+ Vst = #vst{current=St} = set_catch_end(Reg, Vst0),
+ Xs = gb_trees_from_list([{0,{atom,[]}},{1,term},{2,term}]),
+ Vst#vst{current=St#st{x=Xs,ct=Fails,fls=undefined}};
Type ->
error({bad_type,Type})
end;
@@ -530,7 +436,7 @@ valfun_2(I, #vst{current=#st{ct=[[Fail]|_]}}=Vst) when is_integer(Fail) ->
%% Update branched state
valfun_3(I, branch_state(Fail, Vst));
valfun_2(_, _) ->
- error(ambigous_catch_try_state).
+ error(ambiguous_catch_try_state).
%% Handle the remaining floating point instructions here.
%% Floating point.
@@ -574,6 +480,7 @@ valfun_4({apply,Live}, Vst) ->
valfun_4({apply_last,Live,_}, Vst) ->
tail_call(apply, Live+2, Vst);
valfun_4({call_fun,Live}, Vst) ->
+ validate_src([{x,Live}], Vst),
call('fun', Live+1, Vst);
valfun_4({call,Live,Func}, Vst) ->
call(Func, Live, Vst);
@@ -593,8 +500,6 @@ valfun_4({call_ext_last,Live,Func,StkSize},
tail_call(Func, Live, Vst);
valfun_4({call_ext_last,_,_,_}, #vst{current=#st{numy=NumY}}) ->
error({allocated,NumY});
-valfun_4({make_fun,_,_,Live}, Vst) ->
- call('fun', Live, Vst);
valfun_4({make_fun2,_,_,_,Live}, Vst) ->
call(make_fun, Live, Vst);
%% Other BIFs
@@ -611,8 +516,9 @@ valfun_4({bif,element,{f,Fail},[Pos,Tuple],Dst}, Vst0) ->
TupleType = upgrade_tuple_type({tuple,[get_tuple_size(PosType)]}, TupleType0),
Vst = set_type(TupleType, Tuple, Vst1),
set_type_reg(term, Dst, Vst);
-valfun_4({raise,{f,_}=Fail,Src,Dst}, Vst) ->
- valfun_4({bif,raise,Fail,Src,Dst}, Vst);
+valfun_4({bif,raise,{f,0},Src,_Dst}, Vst) ->
+ validate_src(Src, Vst),
+ kill_state(Vst);
valfun_4({bif,Op,{f,Fail},Src,Dst}, Vst0) ->
validate_src(Src, Vst0),
Vst = branch_state(Fail, Vst0),
@@ -628,6 +534,7 @@ valfun_4({gc_bif,Op,{f,Fail},Live,Src,Dst}, #vst{current=St0}=Vst0) ->
Type = bif_type(Op, Src, Vst),
set_type_reg(Type, Dst, Vst);
valfun_4(return, #vst{current=#st{numy=none}}=Vst) ->
+ assert_term({x,0}, Vst),
kill_state(Vst);
valfun_4(return, #vst{current=#st{numy=NumY}}) ->
error({stack_frame,NumY});
@@ -675,7 +582,7 @@ valfun_4({test,bs_start_match2,{f,Fail},Live,[Ctx,NeedSlots],Ctx}, Vst0) ->
verify_live(Live, Vst0),
Vst1 = prune_x_regs(Live, Vst0),
BranchVst = case CtxType of
- {match_context,_,_} ->
+ #ms{} ->
%% The failure branch will never be taken when Ctx
%% is a match context. Therefore, the type for Ctx
%% at the failure label must not be match_context
@@ -728,32 +635,6 @@ valfun_4({bs_save2,Ctx,SavePoint}, Vst) ->
valfun_4({bs_restore2,Ctx,SavePoint}, Vst) ->
bsm_restore(Ctx, SavePoint, Vst);
-%% Bit syntax instructions.
-valfun_4({bs_start_match,{f,_Fail}=F,Src}, Vst) ->
- valfun_4({test,bs_start_match,F,[Src]}, Vst);
-valfun_4({test,bs_start_match,{f,Fail},[Src]}, Vst) ->
- assert_term(Src, Vst),
- bs_start_match(branch_state(Fail, Vst));
-
-valfun_4({bs_save,SavePoint}, Vst) ->
- bs_assert_state(Vst),
- bs_save(SavePoint, Vst);
-valfun_4({bs_restore,SavePoint}, Vst) ->
- bs_assert_state(Vst),
- bs_assert_savepoint(SavePoint, Vst),
- Vst;
-valfun_4({test,bs_skip_bits,{f,Fail},[Src,_,_]}, Vst) ->
- bs_assert_state(Vst),
- assert_term(Src, Vst),
- branch_state(Fail, Vst);
-valfun_4({test,bs_test_tail,{f,Fail},_}, Vst) ->
- bs_assert_state(Vst),
- branch_state(Fail, Vst);
-valfun_4({test,_,{f,Fail},[_,_,_,Dst]}, Vst0) ->
- bs_assert_state(Vst0),
- Vst = branch_state(Fail, Vst0),
- set_type_reg({integer,[]}, Dst, Vst);
-
%% Other test instructions.
valfun_4({test,is_float,{f,Lbl},[Float]}, Vst) ->
assert_term(Float, Vst),
@@ -768,6 +649,20 @@ valfun_4({test,is_nonempty_list,{f,Lbl},[Cons]}, Vst) ->
valfun_4({test,test_arity,{f,Lbl},[Tuple,Sz]}, Vst) when is_integer(Sz) ->
assert_type(tuple, Tuple, Vst),
set_type_reg({tuple,Sz}, Tuple, branch_state(Lbl, Vst));
+valfun_4({test,has_map_fields,{f,Lbl},Src,{list,List}}, Vst) ->
+ assert_type(map, Src, Vst),
+ assert_unique_map_keys(List),
+ branch_state(Lbl, Vst);
+valfun_4({test,is_map,{f,Lbl},[Src]}, Vst0) ->
+ Vst = branch_state(Lbl, Vst0),
+ case Src of
+ {Tag,_} when Tag =:= x; Tag =:= y ->
+ set_type_reg(map, Src, Vst);
+ {literal,Map} when is_map(Map) ->
+ Vst;
+ _ ->
+ kill_state(Vst)
+ end;
valfun_4({test,_Op,{f,Lbl},Src}, Vst) ->
validate_src(Src, Vst),
branch_state(Lbl, Vst);
@@ -781,9 +676,6 @@ valfun_4({bs_utf8_size,{f,Fail},A,Dst}, Vst) ->
valfun_4({bs_utf16_size,{f,Fail},A,Dst}, Vst) ->
assert_term(A, Vst),
set_type_reg({integer,[]}, Dst, branch_state(Fail, Vst));
-valfun_4({bs_bits_to_bytes,{f,Fail},Src,Dst}, Vst) ->
- assert_term(Src, Vst),
- set_type_reg({integer,[]}, Dst, branch_state(Fail, Vst));
valfun_4({bs_init2,{f,Fail},Sz,Heap,Live,_,Dst}, Vst0) ->
verify_live(Live, Vst0),
if
@@ -794,8 +686,7 @@ valfun_4({bs_init2,{f,Fail},Sz,Heap,Live,_,Dst}, Vst0) ->
end,
Vst1 = heap_alloc(Heap, Vst0),
Vst2 = branch_state(Fail, Vst1),
- Vst3 = prune_x_regs(Live, Vst2),
- Vst = bs_zero_bits(Vst3),
+ Vst = prune_x_regs(Live, Vst2),
set_type_reg(binary, Dst, Vst);
valfun_4({bs_init_bits,{f,Fail},Sz,Heap,Live,_,Dst}, Vst0) ->
verify_live(Live, Vst0),
@@ -807,8 +698,7 @@ valfun_4({bs_init_bits,{f,Fail},Sz,Heap,Live,_,Dst}, Vst0) ->
end,
Vst1 = heap_alloc(Heap, Vst0),
Vst2 = branch_state(Fail, Vst1),
- Vst3 = prune_x_regs(Live, Vst2),
- Vst = bs_zero_bits(Vst3),
+ Vst = prune_x_regs(Live, Vst2),
set_type_reg(binary, Dst, Vst);
valfun_4({bs_append,{f,Fail},Bits,Heap,Live,_Unit,Bin,_Flags,Dst}, Vst0) ->
verify_live(Live, Vst0),
@@ -816,57 +706,84 @@ valfun_4({bs_append,{f,Fail},Bits,Heap,Live,_Unit,Bin,_Flags,Dst}, Vst0) ->
assert_term(Bin, Vst0),
Vst1 = heap_alloc(Heap, Vst0),
Vst2 = branch_state(Fail, Vst1),
- Vst3 = prune_x_regs(Live, Vst2),
- Vst = bs_zero_bits(Vst3),
+ Vst = prune_x_regs(Live, Vst2),
set_type_reg(binary, Dst, Vst);
valfun_4({bs_private_append,{f,Fail},Bits,_Unit,Bin,_Flags,Dst}, Vst0) ->
assert_term(Bits, Vst0),
assert_term(Bin, Vst0),
- Vst1 = branch_state(Fail, Vst0),
- Vst = bs_zero_bits(Vst1),
+ Vst = branch_state(Fail, Vst0),
set_type_reg(binary, Dst, Vst);
valfun_4({bs_put_string,Sz,_}, Vst) when is_integer(Sz) ->
Vst;
-valfun_4({bs_put_binary,{f,Fail},Sz,_,_,Src}=I, Vst0) ->
- assert_term(Sz, Vst0),
- assert_term(Src, Vst0),
- Vst = bs_align_check(I, Vst0),
+valfun_4({bs_put_binary,{f,Fail},Sz,_,_,Src}, Vst) ->
+ assert_term(Sz, Vst),
+ assert_term(Src, Vst),
branch_state(Fail, Vst);
-valfun_4({bs_put_float,{f,Fail},Sz,_,_,Src}=I, Vst0) ->
- assert_term(Sz, Vst0),
- assert_term(Src, Vst0),
- Vst = bs_align_check(I, Vst0),
+valfun_4({bs_put_float,{f,Fail},Sz,_,_,Src}, Vst) ->
+ assert_term(Sz, Vst),
+ assert_term(Src, Vst),
branch_state(Fail, Vst);
-valfun_4({bs_put_integer,{f,Fail},Sz,_,_,Src}=I, Vst0) ->
- assert_term(Sz, Vst0),
- assert_term(Src, Vst0),
- Vst = bs_align_check(I, Vst0),
+valfun_4({bs_put_integer,{f,Fail},Sz,_,_,Src}, Vst) ->
+ assert_term(Sz, Vst),
+ assert_term(Src, Vst),
branch_state(Fail, Vst);
-valfun_4({bs_put_utf8,{f,Fail},_,Src}=I, Vst0) ->
- assert_term(Src, Vst0),
- Vst = bs_align_check(I, Vst0),
+valfun_4({bs_put_utf8,{f,Fail},_,Src}, Vst) ->
+ assert_term(Src, Vst),
branch_state(Fail, Vst);
-valfun_4({bs_put_utf16,{f,Fail},_,Src}=I, Vst0) ->
- assert_term(Src, Vst0),
- Vst = bs_align_check(I, Vst0),
+valfun_4({bs_put_utf16,{f,Fail},_,Src}, Vst) ->
+ assert_term(Src, Vst),
branch_state(Fail, Vst);
-valfun_4({bs_put_utf32,{f,Fail},_,Src}=I, Vst0) ->
- assert_term(Src, Vst0),
- Vst = bs_align_check(I, Vst0),
+valfun_4({bs_put_utf32,{f,Fail},_,Src}, Vst) ->
+ assert_term(Src, Vst),
branch_state(Fail, Vst);
-%% Old bit syntax construction (before R10B).
-valfun_4({bs_init,_,_}, Vst) ->
- bs_zero_bits(Vst);
-valfun_4({bs_need_buf,_}, Vst) -> Vst;
-valfun_4({bs_final,{f,Fail},Dst}, Vst0) ->
- Vst = branch_state(Fail, Vst0),
- set_type_reg(binary, Dst, Vst);
-valfun_4({bs_final2,Src,Dst}, Vst0) ->
- assert_term(Src, Vst0),
- set_type_reg(binary, Dst, Vst0);
+%% Map instructions.
+valfun_4({put_map_assoc,{f,Fail},Src,Dst,Live,{list,List}}, Vst) ->
+ verify_put_map(Fail, Src, Dst, Live, List, Vst);
+valfun_4({put_map_exact,{f,Fail},Src,Dst,Live,{list,List}}, Vst) ->
+ verify_put_map(Fail, Src, Dst, Live, List, Vst);
+valfun_4({get_map_elements,{f,Fail},Src,{list,List}}, Vst) ->
+ verify_get_map(Fail, Src, List, Vst);
valfun_4(_, _) ->
error(unknown_instruction).
+verify_get_map(Fail, Src, List, Vst0) ->
+ assert_type(map, Src, Vst0),
+ Vst1 = foldl(fun(D, Vsti) ->
+ case is_reg_defined(D,Vsti) of
+ true -> set_type_reg(term,D,Vsti);
+ false -> Vsti
+ end
+ end, Vst0, extract_map_vals(List)),
+ Vst2 = branch_state(Fail, Vst1),
+ Keys = extract_map_keys(List),
+ assert_unique_map_keys(Keys),
+ verify_get_map_pair(List,Vst0,Vst2).
+
+extract_map_vals([_Key,Val|T]) ->
+ [Val|extract_map_vals(T)];
+extract_map_vals([]) -> [].
+
+extract_map_keys([Key,_Val|T]) ->
+ [Key|extract_map_keys(T)];
+extract_map_keys([]) -> [].
+
+verify_get_map_pair([],_,Vst) -> Vst;
+verify_get_map_pair([Src,Dst|Vs],Vst0,Vsti) ->
+ assert_term(Src, Vst0),
+ verify_get_map_pair(Vs,Vst0,set_type_reg(term,Dst,Vsti)).
+
+verify_put_map(Fail, Src, Dst, Live, List, Vst0) ->
+ assert_type(map, Src, Vst0),
+ verify_live(Live, Vst0),
+ verify_y_init(Vst0),
+ foreach(fun (Term) -> assert_term(Term, Vst0) end, List),
+ Vst1 = heap_alloc(0, Vst0),
+ Vst2 = branch_state(Fail, Vst1),
+ Vst = prune_x_regs(Live, Vst2),
+ Keys = extract_map_keys(List),
+ assert_unique_map_keys(Keys),
+ set_type_reg(map, Dst, Vst).
+
%%
%% Common code for validating bs_get* instructions.
%%
@@ -887,15 +804,12 @@ validate_bs_skip_utf(Fail, Ctx, Live, Vst0) ->
branch_state(Fail, Vst).
%%
-%% Special state handling for setelement/3 and the set_tuple_element/3 instruction.
+%% Special state handling for setelement/3 and set_tuple_element/3 instructions.
%% A possibility for garbage collection must not occur between setelement/3 and
%% set_tuple_element/3.
%%
val_dsetel({move,_,_}, Vst) ->
Vst;
-val_dsetel({put_string,0,{string,""},_}, Vst) ->
- %% An empty string is OK since it doesn't build anything.
- Vst;
val_dsetel({call_ext,3,{extfunc,erlang,setelement,3}}, #vst{current=St}=Vst) ->
Vst#vst{current=St#st{setelem=true}};
val_dsetel({set_tuple_element,_,_,_}, #vst{current=#st{setelem=false}}) ->
@@ -923,56 +837,86 @@ kill_state_1(Vst) ->
%% The stackframe must be initialized.
%% The instruction will return to the instruction following the call.
call(Name, Live, #vst{current=St}=Vst) ->
- verify_live(Live, Vst),
+ verify_call_args(Name, Live, Vst),
verify_y_init(Vst),
case return_type(Name, Vst) of
Type when Type =/= exception ->
%% Type is never 'exception' because it has been handled earlier.
Xs = gb_trees_from_list([{0,Type}]),
- Vst#vst{current=St#st{x=Xs,f=init_fregs(),bsm=undefined}}
+ Vst#vst{current=St#st{x=Xs,f=init_fregs()}}
end.
%% Tail call.
%% The stackframe must have a known size and be initialized.
%% Does not return to the instruction following the call.
-tail_call(Name, Live, Vst) ->
+tail_call(Name, Live, Vst0) ->
+ verify_y_init(Vst0),
+ Vst = deallocate(Vst0),
verify_call_args(Name, Live, Vst),
- verify_y_init(Vst),
verify_no_ct(Vst),
kill_state(Vst).
verify_call_args(_, 0, #vst{}) ->
ok;
verify_call_args({f,Lbl}, Live, Vst) when is_integer(Live)->
- Verify = fun(R) ->
- case get_move_term_type(R, Vst) of
- {match_context,_,_} ->
- verify_call_match_context(Lbl, Vst);
- _ ->
- ok
- end
- end,
- verify_call_args_1(Live, Verify, Vst);
+ verify_local_call(Lbl, Live, Vst);
verify_call_args(_, Live, Vst) when is_integer(Live)->
- Verify = fun(R) -> get_term_type(R, Vst) end,
- verify_call_args_1(Live, Verify, Vst);
+ verify_call_args_1(Live, Vst);
verify_call_args(_, Live, _) ->
error({bad_number_of_live_regs,Live}).
-verify_call_args_1(0, _, _) -> ok;
-verify_call_args_1(N, Verify, Vst) ->
+verify_call_args_1(0, _) -> ok;
+verify_call_args_1(N, Vst) ->
X = N - 1,
- Verify({x,X}),
- verify_call_args_1(X, Verify, Vst).
+ get_term_type({x,X}, Vst),
+ verify_call_args_1(X, Vst).
+
+verify_local_call(Lbl, Live, Vst) ->
+ case all_ms_in_x_regs(Live, Vst) of
+ [{R,Ctx}] ->
+ %% Verify that there is a suitable bs_start_match2 instruction.
+ verify_call_match_context(Lbl, R, Vst),
+
+ %% Since the callee has consumed the match context,
+ %% there must be no additional copies in Y registers.
+ #ms{id=Id} = Ctx,
+ case ms_in_y_regs(Id, Vst) of
+ [] ->
+ ok;
+ [_|_]=Ys ->
+ error({multiple_match_contexts,[R|Ys]})
+ end;
+ [_,_|_]=Xs0 ->
+ Xs = [R || {R,_} <- Xs0],
+ error({multiple_match_contexts,Xs});
+ [] ->
+ ok
+ end.
+
+all_ms_in_x_regs(0, _Vst) ->
+ [];
+all_ms_in_x_regs(Live0, Vst) ->
+ Live = Live0 - 1,
+ R = {x,Live},
+ case get_move_term_type(R, Vst) of
+ #ms{}=M ->
+ [{R,M}|all_ms_in_x_regs(Live, Vst)];
+ _ ->
+ all_ms_in_x_regs(Live, Vst)
+ end.
-verify_call_match_context(Lbl, #vst{ft=Ft}) ->
+ms_in_y_regs(Id, #vst{current=#st{y=Ys0}}) ->
+ Ys = gb_trees:to_list(Ys0),
+ [Y || {Y,#ms{id=OtherId}} <- Ys, OtherId =:= Id].
+
+verify_call_match_context(Lbl, Ctx, #vst{ft=Ft}) ->
case gb_trees:lookup(Lbl, Ft) of
none ->
error(no_bs_start_match2);
{value,[{test,bs_start_match2,_,_,[Ctx,_],Ctx}|_]} ->
ok;
- {value,[{test,bs_start_match2,_,_,[Bin,_,_],Ctx}|_]} ->
- error({binary_and_context_regs_different,Bin,Ctx})
+ {value,[{test,bs_start_match2,_,_,_,_}=I|_]} ->
+ error({unsuitable_bs_start_match2,I})
end.
allocate(Zero, Stk, Heap, Live, #vst{current=#st{numy=none}=St}=Vst0) ->
@@ -987,7 +931,7 @@ allocate(_, _, _, _, #vst{current=#st{numy=Numy}}) ->
error({existing_stack_frame,{size,Numy}}).
deallocate(#vst{current=St}=Vst) ->
- Vst#vst{current=St#st{y=init_regs(0, initialized),numy=none,bsm=undefined}}.
+ Vst#vst{current=St#st{y=init_regs(0, initialized),numy=none}}.
test_heap(Heap, Live, Vst0) ->
verify_live(Live, Vst0),
@@ -995,7 +939,7 @@ test_heap(Heap, Live, Vst0) ->
heap_alloc(Heap, Vst).
heap_alloc(Heap, #vst{current=St0}=Vst) ->
- St1 = kill_heap_allocation(St0#st{bsm=undefined}),
+ St1 = kill_heap_allocation(St0),
St = heap_alloc_1(Heap, St1),
Vst#vst{current=St}.
@@ -1056,9 +1000,9 @@ get_fls(#vst{current=#st{fls=Fls}}) when is_atom(Fls) -> Fls.
init_fregs() -> 0.
-set_freg({fr,Fr}, #vst{current=#st{f=Fregs0}=St}=Vst)
+set_freg({fr,Fr}=Freg, #vst{current=#st{f=Fregs0}=St}=Vst)
when is_integer(Fr), 0 =< Fr ->
- limit_check(Fr),
+ check_limit(Freg),
Bit = 1 bsl Fr,
if
Fregs0 band Bit =:= 0 ->
@@ -1071,54 +1015,40 @@ set_freg(Fr, _) -> error({bad_target,Fr}).
assert_freg_set({fr,Fr}=Freg, #vst{current=#st{f=Fregs}})
when is_integer(Fr), 0 =< Fr ->
if
- Fregs band (1 bsl Fr) =/= 0 ->
- limit_check(Fr);
- true -> error({uninitialized_reg,Freg})
+ (Fregs bsr Fr) band 1 =:= 0 ->
+ error({uninitialized_reg,Freg});
+ true ->
+ ok
end;
assert_freg_set(Fr, _) -> error({bad_source,Fr}).
-%%%
-%%% Binary matching.
-%%%
-%%% Possible values for the bsm field (=bit syntax matching state).
-%%%
-%%% undefined - Undefined (initial state). No matching instructions allowed.
-%%%
-%%% (gb set) - The gb set contains the defined save points.
-%%%
-%%% The bsm field is reset to 'undefined' by instructions that may cause a
-%%% a garbage collection (might move the binary) and/or context switch
-%%% (may invalidate the save points).
-
-bs_start_match(#vst{current=#st{bsm=undefined}=St}=Vst) ->
- Vst#vst{current=St#st{bsm=gb_sets:empty()}};
-bs_start_match(Vst) ->
- %% Must retain save points here - it is possible to restore back
- %% to a previous binary.
- Vst.
-
-bs_save(Reg, #vst{current=#st{bsm=Saved}=St}=Vst)
- when is_integer(Reg), Reg < ?MAXREG ->
- Vst#vst{current=St#st{bsm=gb_sets:add(Reg, Saved)}};
-bs_save(_, _) -> error(limit).
-
-bs_assert_savepoint(Reg, #vst{current=#st{bsm=Saved}}) ->
- case gb_sets:is_member(Reg, Saved) of
- false -> error({no_save_point,Reg});
- true -> ok
- end.
+%%% Maps
-bs_assert_state(#vst{current=#st{bsm=undefined}}) ->
- error(no_bs_match_state);
-bs_assert_state(_) -> ok.
+%% A single item list may be either a list or a register.
+%%
+%% A list with more than item must contain unique literals.
+%%
+%% An empty list is not allowed.
+assert_unique_map_keys([]) ->
+ %% There is no reason to use the get_map_elements and
+ %% has_map_fields instructions with empty lists.
+ error(empty_field_list);
+assert_unique_map_keys([_]) ->
+ ok;
+assert_unique_map_keys([_,_|_]=Ls) ->
+ Vs = [get_literal(L) || L <- Ls],
+ case length(Vs) =:= sets:size(sets:from_list(Vs)) of
+ true -> ok;
+ false -> error(keys_not_unique)
+ end.
%%%
%%% New binary matching instructions.
%%%
bsm_match_state(Slots) ->
- {match_context,0,Slots}.
+ #ms{slots=Slots}.
bsm_validate_context(Reg, Vst) ->
_ = bsm_get_context(Reg, Vst),
@@ -1126,7 +1056,7 @@ bsm_validate_context(Reg, Vst) ->
bsm_get_context({x,X}=Reg, #vst{current=#st{x=Xs}}=_Vst) when is_integer(X) ->
case gb_trees:lookup(X, Xs) of
- {value,{match_context,_,_}=Ctx} -> Ctx;
+ {value,#ms{}=Ctx} -> Ctx;
_ -> error({no_bsm_context,Reg})
end;
bsm_get_context(Reg, _) -> error({bad_source,Reg}).
@@ -1138,8 +1068,8 @@ bsm_save(Reg, {atom,start}, Vst) ->
Vst;
bsm_save(Reg, SavePoint, Vst) ->
case bsm_get_context(Reg, Vst) of
- {match_context,Bits,Slots} when SavePoint < Slots ->
- Ctx = {match_context,Bits bor (1 bsl SavePoint),Slots},
+ #ms{valid=Bits,slots=Slots}=Ctxt0 when SavePoint < Slots ->
+ Ctx = Ctxt0#ms{valid=Bits bor (1 bsl SavePoint),slots=Slots},
set_type_reg(Ctx, Reg, Vst);
_ -> error({illegal_save,SavePoint})
end.
@@ -1151,63 +1081,15 @@ bsm_restore(Reg, {atom,start}, Vst) ->
Vst;
bsm_restore(Reg, SavePoint, Vst) ->
case bsm_get_context(Reg, Vst) of
- {match_context,Bits,Slots} when SavePoint < Slots ->
+ #ms{valid=Bits,slots=Slots} when SavePoint < Slots ->
case Bits band (1 bsl SavePoint) of
0 -> error({illegal_restore,SavePoint,not_set});
_ -> Vst
end;
_ -> error({illegal_restore,SavePoint,range})
end.
-
%%%
-%%% Validation of alignment in the bit syntax. (Currently, construction only.)
-%%%
-%%% We make sure that the aligned flag is only set when we can be sure of the
-%%% aligment.
-%%%
-
-bs_zero_bits(#vst{current=St}=Vst) ->
- Vst#vst{current=St#st{bits=0}}.
-
-bs_align_check({bs_put_utf8,_,Flags,_}, #vst{current=#st{}=St}=Vst) ->
- bs_verify_flags(Flags, St),
- Vst;
-bs_align_check({bs_put_utf16,_,Flags,_}, #vst{current=#st{}=St}=Vst) ->
- bs_verify_flags(Flags, St),
- Vst;
-bs_align_check({bs_put_utf32,_,Flags,_}, #vst{current=#st{}=St}=Vst) ->
- bs_verify_flags(Flags, St),
- Vst;
-bs_align_check({_,_,Sz,U,Flags,_}, #vst{current=#st{bits=Bits}=St}=Vst) ->
- bs_verify_flags(Flags, St),
- bs_update_bits(Bits, Sz, U, St, Vst).
-
-bs_update_bits(undefined, _, _, _, Vst) -> Vst;
-bs_update_bits(Bits0, {integer,Sz}, U, St, Vst) ->
- Bits = Bits0 + U*Sz,
- Vst#vst{current=St#st{bits=Bits}};
-bs_update_bits(_, {atom,all}, _, _, Vst) ->
- %% A binary will not change the alignment.
- Vst;
-bs_update_bits(_, _, U, _, Vst) when U rem 8 =:= 0 ->
- %% Units of 8, 16, and so on will not change the aligment.
- Vst;
-bs_update_bits(_, _, _, St, Vst) ->
- %% We can no longer be sure about aligment.
- Vst#vst{current=St#st{bits=undefined}}.
-
-bs_verify_flags({field_flags,Fl}, #st{bits=Bits}) ->
- case bs_is_aligned(Fl) of
- false -> ok;
- true when is_integer(Bits), Bits rem 8 =:= 0 -> ok;
- true -> error({aligned_flag_set,{bits,Bits}})
- end.
-
-bs_is_aligned(Fl) when is_integer(Fl) -> Fl band 1 =:= 1;
-bs_is_aligned(Fl) when is_list(Fl) -> member(aligned, Fl).
-
-%%%
%%% Keeping track of types.
%%%
@@ -1215,42 +1097,44 @@ set_type(Type, {x,_}=Reg, Vst) -> set_type_reg(Type, Reg, Vst);
set_type(Type, {y,_}=Reg, Vst) -> set_type_y(Type, Reg, Vst);
set_type(_, _, #vst{}=Vst) -> Vst.
-set_type_reg(Type, {x,X}, #vst{current=#st{x=Xs}=St}=Vst)
+set_type_reg(Type, {x,X}=Reg, #vst{current=#st{x=Xs}=St}=Vst)
when is_integer(X), 0 =< X ->
- limit_check(X),
+ check_limit(Reg),
Vst#vst{current=St#st{x=gb_trees:enter(X, Type, Xs)}};
set_type_reg(Type, Reg, Vst) ->
set_type_y(Type, Reg, Vst).
-set_type_y(Type, {y,Y}=Reg, #vst{current=#st{y=Ys0,numy=NumY}=St}=Vst)
+set_type_y(Type, {y,Y}=Reg, #vst{current=#st{y=Ys0}=St}=Vst)
when is_integer(Y), 0 =< Y ->
- limit_check(Y),
- case {Y,NumY} of
- {_,none} ->
- error({no_stack_frame,Reg});
- {_,_} when Y > NumY ->
- error({y_reg_out_of_range,Reg,NumY});
- {_,_} ->
- Ys = if Type =:= initialized_ct ->
- gb_trees:enter(Y, initialized, Ys0);
- true ->
- case gb_trees:lookup(Y, Ys0) of
- none ->
- gb_trees:insert(Y, Type, Ys0);
- {value,uinitialized} ->
- gb_trees:insert(Y, Type, Ys0);
- {value,{catchtag,_}=Tag} ->
- error(Tag);
- {value,{trytag,_}=Tag} ->
- error(Tag);
- {value,_} ->
- gb_trees:update(Y, Type, Ys0)
- end
- end,
- Vst#vst{current=St#st{y=Ys}}
- end;
+ check_limit(Reg),
+ Ys = case gb_trees:lookup(Y, Ys0) of
+ none ->
+ error({invalid_store,Reg,Type});
+ {value,{catchtag,_}=Tag} ->
+ error(Tag);
+ {value,{trytag,_}=Tag} ->
+ error(Tag);
+ {value,_} ->
+ gb_trees:update(Y, Type, Ys0)
+ end,
+ Vst#vst{current=St#st{y=Ys}};
set_type_y(Type, Reg, #vst{}) -> error({invalid_store,Reg,Type}).
+set_catch_end({y,Y}, #vst{current=#st{y=Ys0}=St}=Vst) ->
+ Ys = gb_trees:update(Y, initialized, Ys0),
+ Vst#vst{current=St#st{y=Ys}}.
+
+
+is_reg_defined({x,_}=Reg, Vst) -> is_type_defined_x(Reg, Vst);
+is_reg_defined({y,_}=Reg, Vst) -> is_type_defined_y(Reg, Vst);
+is_reg_defined(V, #vst{}) -> error({not_a_register, V}).
+
+is_type_defined_x({x,X}, #vst{current=#st{x=Xs}}) ->
+ gb_trees:is_defined(X,Xs).
+
+is_type_defined_y({y,Y}, #vst{current=#st{y=Ys}}) ->
+ gb_trees:is_defined(Y,Ys).
+
assert_term(Src, Vst) ->
get_term_type(Src, Vst),
ok.
@@ -1278,7 +1162,7 @@ assert_term(Src, Vst) ->
%% Thus 'exception' is never stored as type descriptor
%% for a register.
%%
-%% {match_context,_,_} A matching context for bit syntax matching. We do allow
+%% #ms{} A match context for bit syntax matching. We do allow
%% it to moved/to from stack, but otherwise it must only
%% be accessed by bit syntax matching instructions.
%%
@@ -1311,6 +1195,8 @@ assert_term(Src, Vst) ->
%%
%% number Integer or Float of unknown value
%%
+%% map Map.
+%%
assert_type(WantedType, Term, Vst) ->
assert_type(WantedType, get_term_type(Term, Vst)).
@@ -1318,16 +1204,20 @@ assert_type(WantedType, Term, Vst) ->
assert_type(Correct, Correct) -> ok;
assert_type(float, {float,_}) -> ok;
assert_type(tuple, {tuple,_}) -> ok;
+assert_type(tuple, {literal,Tuple}) when is_tuple(Tuple) -> ok;
assert_type({tuple_element,I}, {tuple,[Sz]})
when 1 =< I, I =< Sz ->
ok;
assert_type({tuple_element,I}, {tuple,Sz})
when is_integer(Sz), 1 =< I, I =< Sz ->
ok;
+assert_type({tuple_element,I}, {literal,Lit}) when I =< tuple_size(Lit) ->
+ ok;
+assert_type(cons, {literal,[_|_]}) ->
+ ok;
assert_type(Needed, Actual) ->
error({bad_type,{needed,Needed},{actual,Actual}}).
-
%% upgrade_tuple_type(NewTupleType, OldType) -> TupleType.
%% upgrade_tuple_type/2 is used when linear code finds out more and
%% more information about a tuple type, so that the type gets more
@@ -1379,7 +1269,7 @@ get_term_type(Src, Vst) ->
initialized -> error({unassigned,Src});
{catchtag,_} -> error({catchtag,Src});
{trytag,_} -> error({trytag,Src});
- {match_context,_,_} -> error({match_context,Src});
+ #ms{} -> error({match_context,Src});
Type -> Type
end.
@@ -1393,6 +1283,7 @@ get_term_type_1(nil=T, _) -> T;
get_term_type_1({atom,A}=T, _) when is_atom(A) -> T;
get_term_type_1({float,F}=T, _) when is_float(F) -> T;
get_term_type_1({integer,I}=T, _) when is_integer(I) -> T;
+get_term_type_1({literal,Map}, _) when is_map(Map) -> map;
get_term_type_1({literal,_}=T, _) -> T;
get_term_type_1({x,X}=Reg, #vst{current=#st{x=Xs}}) when is_integer(X) ->
case gb_trees:lookup(X, Xs) of
@@ -1408,6 +1299,15 @@ get_term_type_1({y,Y}=Reg, #vst{current=#st{y=Ys}}) when is_integer(Y) ->
get_term_type_1(Src, _) -> error({bad_source,Src}).
+%% get_literal(Src) -> literal_value().
+get_literal(nil) -> [];
+get_literal({atom,A}) when is_atom(A) -> A;
+get_literal({float,F}) when is_float(F) -> F;
+get_literal({integer,I}) when is_integer(I) -> I;
+get_literal({literal,L}) -> L;
+get_literal(T) -> error({not_literal,T}).
+
+
branch_arities([], _, #vst{}=Vst) -> Vst;
branch_arities([Sz,{f,L}|T], Tuple, #vst{current=St}=Vst0)
when is_integer(Sz) ->
@@ -1438,14 +1338,13 @@ merge_states(L, St, Branched) when L =/= 0 ->
{value,OtherSt} -> merge_states_1(St, OtherSt)
end.
-merge_states_1(#st{x=Xs0,y=Ys0,numy=NumY0,h=H0,ct=Ct0,bsm=Bsm0}=St,
- #st{x=Xs1,y=Ys1,numy=NumY1,h=H1,ct=Ct1,bsm=Bsm1}) ->
+merge_states_1(#st{x=Xs0,y=Ys0,numy=NumY0,h=H0,ct=Ct0},
+ #st{x=Xs1,y=Ys1,numy=NumY1,h=H1,ct=Ct1}) ->
NumY = merge_stk(NumY0, NumY1),
Xs = merge_regs(Xs0, Xs1),
Ys = merge_y_regs(Ys0, Ys1),
Ct = merge_ct(Ct0, Ct1),
- Bsm = merge_bsm(Bsm0, Bsm1),
- St#st{x=Xs,y=Ys,numy=NumY,h=min(H0, H1),ct=Ct,bsm=Bsm}.
+ #st{x=Xs,y=Ys,numy=NumY,h=min(H0, H1),ct=Ct}.
merge_stk(S, S) -> S;
merge_stk(_, _) -> undecided.
@@ -1475,20 +1374,24 @@ merge_regs_1([], [_|_]) -> [];
merge_regs_1([_|_], []) -> [].
merge_y_regs(Rs0, Rs1) ->
- Rs = merge_y_regs_1(gb_trees:to_list(Rs0), gb_trees:to_list(Rs1)),
- gb_trees_from_list(Rs).
+ case {gb_trees:size(Rs0),gb_trees:size(Rs1)} of
+ {Sz0,Sz1} when Sz0 < Sz1 ->
+ merge_y_regs_1(Sz0-1, Rs1, Rs0);
+ {_,Sz1} ->
+ merge_y_regs_1(Sz1-1, Rs0, Rs1)
+ end.
-merge_y_regs_1([Same|Rs1], [Same|Rs2]) ->
- [Same|merge_y_regs_1(Rs1, Rs2)];
-merge_y_regs_1([{R1,_}|Rs1], [{R2,_}|_]=Rs2) when R1 < R2 ->
- [{R1,uninitialized}|merge_y_regs_1(Rs1, Rs2)];
-merge_y_regs_1([{R1,_}|_]=Rs1, [{R2,_}|Rs2]) when R1 > R2 ->
- [{R2,uninitialized}|merge_y_regs_1(Rs1, Rs2)];
-merge_y_regs_1([{R,Type1}|Rs1], [{R,Type2}|Rs2]) ->
- [{R,merge_types(Type1, Type2)}|merge_y_regs_1(Rs1, Rs2)];
-merge_y_regs_1([], []) -> [];
-merge_y_regs_1([], [_|_]=Rs) -> Rs;
-merge_y_regs_1([_|_]=Rs, []) -> Rs.
+merge_y_regs_1(Y, S, Regs0) when Y >= 0 ->
+ Type0 = gb_trees:get(Y, Regs0),
+ case gb_trees:get(Y, S) of
+ Type0 ->
+ merge_y_regs_1(Y-1, S, Regs0);
+ Type1 ->
+ Type = merge_types(Type0, Type1),
+ Regs = gb_trees:update(Y, Type, Regs0),
+ merge_y_regs_1(Y-1, S, Regs)
+ end;
+merge_y_regs_1(_, _, Regs) -> Regs.
%% merge_types(Type1, Type2) -> Type
%% Return the most specific type possible.
@@ -1518,20 +1421,17 @@ merge_types(bool, {atom,A}) ->
merge_bool(A);
merge_types({atom,A}, bool) ->
merge_bool(A);
-merge_types({match_context,B0,Slots},{match_context,B1,Slots}) ->
- {match_context,B0 bor B1,Slots};
-merge_types({match_context,_,_}=M, _) ->
+merge_types(#ms{id=Id,valid=B0,slots=Slots}=M,
+ #ms{id=Id,valid=B1,slots=Slots}) ->
+ M#ms{valid=B0 bor B1,slots=Slots};
+merge_types(#ms{}=M, _) ->
M;
-merge_types(_, {match_context,_,_}=M) ->
+merge_types(_, #ms{}=M) ->
M;
merge_types(T1, T2) when T1 =/= T2 ->
%% Too different. All we know is that the type is a 'term'.
term.
-merge_bsm(undefined, _) -> undefined;
-merge_bsm(_, undefined) -> undefined;
-merge_bsm(Bsm0, Bsm1) -> gb_sets:intersection(Bsm0, Bsm1).
-
tuple_sz([Sz]) -> Sz;
tuple_sz(Sz) -> Sz.
@@ -1638,6 +1538,7 @@ bif_type(is_float, [_], _) -> bool;
bif_type(is_function, [_], _) -> bool;
bif_type(is_integer, [_], _) -> bool;
bif_type(is_list, [_], _) -> bool;
+bif_type(is_map, [_], _) -> bool;
bif_type(is_number, [_], _) -> bool;
bif_type(is_pid, [_], _) -> bool;
bif_type(is_port, [_], _) -> bool;
@@ -1649,7 +1550,6 @@ bif_type(node, [_], _) -> {atom,[]};
bif_type(hd, [_], _) -> term;
bif_type(tl, [_], _) -> term;
bif_type(get, [_], _) -> term;
-bif_type(raise, [_,_], _) -> exception;
bif_type(Bif, _, _) when is_atom(Bif) -> term.
is_bif_safe('/=', 2) -> true;
@@ -1663,10 +1563,12 @@ is_bif_safe('>=', 2) -> true;
is_bif_safe(is_atom, 1) -> true;
is_bif_safe(is_boolean, 1) -> true;
is_bif_safe(is_binary, 1) -> true;
+is_bif_safe(is_bitstring, 1) -> true;
is_bif_safe(is_float, 1) -> true;
is_bif_safe(is_function, 1) -> true;
is_bif_safe(is_integer, 1) -> true;
is_bif_safe(is_list, 1) -> true;
+is_bif_safe(is_map, 1) -> true;
is_bif_safe(is_number, 1) -> true;
is_bif_safe(is_pid, 1) -> true;
is_bif_safe(is_port, 1) -> true;
@@ -1692,8 +1594,12 @@ return_type_1(erlang, setelement, 3, Vst) ->
Tuple = {x,1},
TupleType =
case get_term_type(Tuple, Vst) of
- {tuple,_}=TT -> TT;
- _ -> {tuple,[0]}
+ {tuple,_}=TT ->
+ TT;
+ {literal,Lit} when is_tuple(Lit) ->
+ {tuple,tuple_size(Lit)};
+ _ ->
+ {tuple,[0]}
end,
case get_term_type({x,0}, Vst) of
{integer,[]} -> TupleType;
@@ -1709,8 +1615,6 @@ return_type_1(M, F, A, _) when is_atom(M), is_atom(F), is_integer(A), A >= 0 ->
return_type_erl(exit, 1) -> exception;
return_type_erl(throw, 1) -> exception;
-return_type_erl(fault, 1) -> exception;
-return_type_erl(fault, 2) -> exception;
return_type_erl(error, 1) -> exception;
return_type_erl(error, 2) -> exception;
return_type_erl(F, A) when is_atom(F), is_integer(A), A >= 0 -> term.
@@ -1731,6 +1635,7 @@ return_type_math(erf, 1) -> {float,[]};
return_type_math(erfc, 1) -> {float,[]};
return_type_math(exp, 1) -> {float,[]};
return_type_math(log, 1) -> {float,[]};
+return_type_math(log2, 1) -> {float,[]};
return_type_math(log10, 1) -> {float,[]};
return_type_math(sqrt, 1) -> {float,[]};
return_type_math(atan2, 2) -> {float,[]};
@@ -1738,66 +1643,19 @@ return_type_math(pow, 2) -> {float,[]};
return_type_math(pi, 0) -> {float,[]};
return_type_math(F, A) when is_atom(F), is_integer(A), A >= 0 -> term.
-limit_check(Num) when is_integer(Num), Num >= ?MAXREG ->
- error(limit);
-limit_check(_) -> ok.
+check_limit({x,X}) when is_integer(X), X < 1023 ->
+ %% Note: x(1023) is reserved for use by the BEAM loader.
+ ok;
+check_limit({y,Y}) when is_integer(Y), Y < 1024 ->
+ ok;
+check_limit({fr,Fr}) when is_integer(Fr), Fr < 1024 ->
+ ok;
+check_limit(_) ->
+ error(limit).
min(A, B) when is_integer(A), is_integer(B), A < B -> A;
min(A, B) when is_integer(A), is_integer(B) -> B.
gb_trees_from_list(L) -> gb_trees:from_orddict(lists:sort(L)).
--ifdef(DEBUG).
-error(Error) -> exit(Error).
--else.
error(Error) -> throw(Error).
--endif.
-
-
-%%%
-%%% Rewrite disassembled code to the same format as we used internally
-%%% to not have to worry later.
-%%%
-
-normalize_disassembled_code(Fs) ->
- Index = ndc_index(Fs, []),
- ndc(Fs, Index, []).
-
-ndc_index([{function,Name,Arity,Entry,_Code}|Fs], Acc) ->
- ndc_index(Fs, [{{Name,Arity},Entry}|Acc]);
-ndc_index([], Acc) ->
- gb_trees:from_orddict(lists:sort(Acc)).
-
-ndc([{function,Name,Arity,Entry,Code0}|Fs], D, Acc) ->
- Code = ndc_1(Code0, D, []),
- ndc(Fs, D, [{function,Name,Arity,Entry,Code}|Acc]);
-ndc([], _, Acc) -> reverse(Acc).
-
-ndc_1([{call=Op,A,{_,F,A}}|Is], D, Acc) ->
- ndc_1(Is, D, [{Op,A,{f,gb_trees:get({F,A}, D)}}|Acc]);
-ndc_1([{call_only=Op,A,{_,F,A}}|Is], D, Acc) ->
- ndc_1(Is, D, [{Op,A,{f,gb_trees:get({F,A}, D)}}|Acc]);
-ndc_1([{call_last=Op,A,{_,F,A},Sz}|Is], D, Acc) ->
- ndc_1(Is, D, [{Op,A,{f,gb_trees:get({F,A}, D)},Sz}|Acc]);
-ndc_1([{arithbif,Op,F,Src,Dst}|Is], D, Acc) ->
- ndc_1(Is, D, [{bif,Op,F,Src,Dst}|Acc]);
-ndc_1([{arithfbif,Op,F,Src,Dst}|Is], D, Acc) ->
- ndc_1(Is, D, [{bif,Op,F,Src,Dst}|Acc]);
-ndc_1([{test,bs_start_match2=Op,F,[A1,Live,A3,Dst]}|Is], D, Acc) ->
- ndc_1(Is, D, [{test,Op,F,Live,[A1,A3],Dst}|Acc]);
-ndc_1([{test,bs_get_binary2=Op,F,[A1,Live,A3,A4,A5,Dst]}|Is], D, Acc) ->
- ndc_1(Is, D, [{test,Op,F,Live,[A1,A3,A4,A5],Dst}|Acc]);
-ndc_1([{test,bs_get_float2=Op,F,[A1,Live,A3,A4,A5,Dst]}|Is], D, Acc) ->
- ndc_1(Is, D, [{test,Op,F,Live,[A1,A3,A4,A5],Dst}|Acc]);
-ndc_1([{test,bs_get_integer2=Op,F,[A1,Live,A3,A4,A5,Dst]}|Is], D, Acc) ->
- ndc_1(Is, D, [{test,Op,F,Live,[A1,A3,A4,A5],Dst}|Acc]);
-ndc_1([{test,bs_get_utf8=Op,F,[A1,Live,A3,Dst]}|Is], D, Acc) ->
- ndc_1(Is, D, [{test,Op,F,Live,[A1,A3],Dst}|Acc]);
-ndc_1([{test,bs_get_utf16=Op,F,[A1,Live,A3,Dst]}|Is], D, Acc) ->
- ndc_1(Is, D, [{test,Op,F,Live,[A1,A3],Dst}|Acc]);
-ndc_1([{test,bs_get_utf32=Op,F,[A1,Live,A3,Dst]}|Is], D, Acc) ->
- ndc_1(Is, D, [{test,Op,F,Live,[A1,A3],Dst}|Acc]);
-ndc_1([I|Is], D, Acc) ->
- ndc_1(Is, D, [I|Acc]);
-ndc_1([], _, Acc) ->
- reverse(Acc).
diff --git a/lib/compiler/src/beam_z.erl b/lib/compiler/src/beam_z.erl
index 8c6b0c916d..6c7f8543c2 100644
--- a/lib/compiler/src/beam_z.erl
+++ b/lib/compiler/src/beam_z.erl
@@ -1,18 +1,19 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2012. All Rights Reserved.
+%% Copyright Ericsson AB 2012-2016. All Rights Reserved.
%%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
%%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
%%
%% %CopyrightEnd%
%%
@@ -23,6 +24,8 @@
-export([module/2]).
+-import(lists, [dropwhile/2]).
+
module({Mod,Exp,Attr,Fs0,Lc}, _Opt) ->
Fs = [function(F) || F <- Fs0],
{ok,{Mod,Exp,Attr,Fs,Lc}}.
@@ -50,6 +53,16 @@ undo_renames([{call,A,F},return|Is]) ->
[{call_only,A,F}|undo_renames(Is)];
undo_renames([{call_ext,A,F},return|Is]) ->
[{call_ext_only,A,F}|undo_renames(Is)];
+undo_renames([{bif,raise,_,_,_}=I|Is0]) ->
+ %% A minor optimization. Done here because:
+ %% (1) beam_jump may move or share 'raise' instructions, and that
+ %% may confuse beam_validator.
+ %% (2) beam_trim cannot do its optimization if the 'deallocate'
+ %% instruction after 'raise' has been removed.
+ Is = dropwhile(fun({label,_}) -> false;
+ (_) -> true
+ end, Is0),
+ [I|undo_renames(Is)];
undo_renames([I|Is]) ->
[undo_rename(I)|undo_renames(Is)];
undo_renames([]) -> [].
@@ -74,6 +87,21 @@ undo_rename({bs_init,F,{I,Extra,U,Flags},Live,[Sz,Src],Dst}) ->
{I,F,Sz,Extra,Live,U,Src,Flags,Dst};
undo_rename({bs_init,_,bs_init_writable=I,_,_,_}) ->
I;
+undo_rename({test,bs_match_string=Op,F,[Ctx,Bin0]}) ->
+ Bits = bit_size(Bin0),
+ Bin = case Bits rem 8 of
+ 0 -> Bin0;
+ Rem -> <<Bin0/bitstring,0:(8-Rem)>>
+ end,
+ {test,Op,F,[Ctx,Bits,{string,binary_to_list(Bin)}]};
+undo_rename({put_map,Fail,assoc,S,D,R,L}) ->
+ {put_map_assoc,Fail,S,D,R,L};
+undo_rename({put_map,Fail,exact,S,D,R,L}) ->
+ {put_map_exact,Fail,S,D,R,L};
+undo_rename({test,has_map_fields,Fail,[Src|List]}) ->
+ {test,has_map_fields,Fail,Src,{list,List}};
+undo_rename({get_map_elements,Fail,Src,{list,List}}) ->
+ {get_map_elements,Fail,Src,{list,List}};
undo_rename({select,I,Reg,Fail,List}) ->
{I,Reg,Fail,{list,List}};
undo_rename(I) -> I.
diff --git a/lib/compiler/src/cerl.erl b/lib/compiler/src/cerl.erl
index 4b74d60e9f..61abae344c 100644
--- a/lib/compiler/src/cerl.erl
+++ b/lib/compiler/src/cerl.erl
@@ -1,18 +1,19 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2001-2010. All Rights Reserved.
+%% Copyright Ericsson AB 2001-2016. All Rights Reserved.
%%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
%%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
%%
%% %CopyrightEnd%
@@ -120,15 +121,28 @@
update_c_bitstr/5, update_c_bitstr/6, ann_c_bitstr/5,
ann_c_bitstr/6, is_c_bitstr/1, bitstr_val/1, bitstr_size/1,
bitstr_bitsize/1, bitstr_unit/1, bitstr_type/1,
- bitstr_flags/1]).
-
--export_type([c_binary/0, c_call/0, c_clause/0, c_cons/0, c_fun/0, c_literal/0,
- c_module/0, c_tuple/0, c_values/0, c_var/0, cerl/0, var_name/0]).
-
-%%
-%% needed by the include file below -- do not move
-%%
--type var_name() :: integer() | atom() | {atom(), integer()}.
+ bitstr_flags/1,
+
+ %% keep map exports here for now
+ c_map_pattern/1,
+ is_c_map/1,
+ is_c_map_pattern/1,
+ map_es/1,
+ map_arg/1,
+ update_c_map/3,
+ c_map/1, is_c_map_empty/1,
+ ann_c_map/2, ann_c_map/3,
+ ann_c_map_pattern/2,
+ map_pair_op/1,map_pair_key/1,map_pair_val/1,
+ update_c_map_pair/4,
+ c_map_pair/2, c_map_pair_exact/2,
+ ann_c_map_pair/4
+ ]).
+
+-export_type([c_binary/0, c_bitstr/0, c_call/0, c_clause/0, c_cons/0, c_fun/0,
+ c_let/0, c_literal/0, c_map/0, c_map_pair/0,
+ c_module/0, c_tuple/0,
+ c_values/0, c_var/0, cerl/0, var_name/0]).
-include("core_parse.hrl").
@@ -145,6 +159,8 @@
-type c_let() :: #c_let{}.
-type c_letrec() :: #c_letrec{}.
-type c_literal() :: #c_literal{}.
+-type c_map() :: #c_map{}.
+-type c_map_pair() :: #c_map_pair{}.
-type c_module() :: #c_module{}.
-type c_primop() :: #c_primop{}.
-type c_receive() :: #c_receive{}.
@@ -155,11 +171,14 @@
-type c_var() :: #c_var{}.
-type cerl() :: c_alias() | c_apply() | c_binary() | c_bitstr()
- | c_call() | c_case() | c_catch() | c_clause() | c_cons()
+ | c_call() | c_case() | c_catch() | c_clause() | c_cons()
| c_fun() | c_let() | c_letrec() | c_literal()
- | c_module() | c_primop() | c_receive() | c_seq()
+ | c_map() | c_map_pair()
+ | c_module() | c_primop() | c_receive() | c_seq()
| c_try() | c_tuple() | c_values() | c_var().
+-type var_name() :: integer() | atom() | {atom(), integer()}.
+
%% =====================================================================
%% Representation (general)
%%
@@ -191,13 +210,15 @@
%% <td>call</td>
%% <td>case</td>
%% <td>catch</td>
-%% </tr><tr>
%% <td>clause</td>
+%% </tr><tr>
%% <td>cons</td>
%% <td>fun</td>
%% <td>let</td>
%% <td>letrec</td>
%% <td>literal</td>
+%% <td>map</td>
+%% <td>map_pair</td>
%% <td>module</td>
%% </tr><tr>
%% <td>primop</td>
@@ -237,7 +258,7 @@
%% @see c_primop/2
%% @see c_receive/1
%% @see c_seq/2
-%% @see c_try/3
+%% @see c_try/5
%% @see c_tuple/1
%% @see c_values/1
%% @see c_var/1
@@ -248,10 +269,10 @@
%% @see subtrees/1
%% @see meta/1
--type ctype() :: 'alias' | 'apply' | 'binary' | 'bitrst' | 'call' | 'case'
- | 'catch' | 'clause' | 'cons' | 'fun' | 'let' | 'letrec'
- | 'literal' | 'module' | 'primop' | 'receive' | 'seq' | 'try'
- | 'tuple' | 'values' | 'var'.
+-type ctype() :: 'alias' | 'apply' | 'binary' | 'bitrst' | 'call' | 'case'
+ | 'catch' | 'clause' | 'cons' | 'fun' | 'let' | 'letrec'
+ | 'literal' | 'map' | 'map_pair' | 'module' | 'primop'
+ | 'receive' | 'seq' | 'try' | 'tuple' | 'values' | 'var'.
-spec type(cerl()) -> ctype().
@@ -268,6 +289,8 @@ type(#c_fun{}) -> 'fun';
type(#c_let{}) -> 'let';
type(#c_letrec{}) -> letrec;
type(#c_literal{}) -> literal;
+type(#c_map{}) -> map;
+type(#c_map_pair{}) -> map_pair;
type(#c_module{}) -> module;
type(#c_primop{}) -> primop;
type(#c_receive{}) -> 'receive';
@@ -414,6 +437,8 @@ is_literal_term([H | T]) ->
is_literal_term(T) when is_tuple(T) ->
is_literal_term_list(tuple_to_list(T));
is_literal_term(B) when is_bitstring(B) -> true;
+is_literal_term(M) when is_map(M) ->
+ is_literal_term_list(maps:to_list(M));
is_literal_term(_) ->
false.
@@ -1433,7 +1458,7 @@ is_proper_list(_) ->
%% X4]</code>.
%%
%% @see c_cons/2
-%% @see c_nil/1
+%% @see c_nil/0
%% @see is_c_list/1
%% @see list_length/1
%% @see make_list/2
@@ -1464,7 +1489,7 @@ abstract_list([]) ->
%% efficient.</p>
%%
%% @see c_cons/2
-%% @see c_nil/1
+%% @see c_nil/0
%% @see is_c_list/1
%% @see list_elements/1
@@ -1558,6 +1583,133 @@ ann_make_list(_, [], Node) ->
%% ---------------------------------------------------------------------
+%% maps
+
+%% @spec is_c_map(Node::cerl()) -> boolean()
+%%
+%% @doc Returns <code>true</code> if <code>Node</code> is an abstract
+%% map constructor, otherwise <code>false</code>.
+
+-spec is_c_map(cerl()) -> boolean().
+
+is_c_map(#c_map{}) ->
+ true;
+is_c_map(#c_literal{val = V}) when is_map(V) ->
+ true;
+is_c_map(_) ->
+ false.
+
+-spec map_es(c_map() | c_literal()) -> [c_map_pair()].
+
+map_es(#c_literal{anno=As,val=M}) when is_map(M) ->
+ [ann_c_map_pair(As,
+ #c_literal{anno=As,val='assoc'},
+ #c_literal{anno=As,val=K},
+ #c_literal{anno=As,val=V}) || {K,V} <- maps:to_list(M)];
+map_es(#c_map{es = Es}) ->
+ Es.
+
+-spec map_arg(c_map() | c_literal()) -> c_map() | c_literal().
+
+map_arg(#c_literal{anno=As,val=M}) when is_map(M) ->
+ #c_literal{anno=As,val=#{}};
+map_arg(#c_map{arg=M}) ->
+ M.
+
+-spec c_map([c_map_pair()]) -> c_map().
+
+c_map(Pairs) ->
+ ann_c_map([], Pairs).
+
+-spec c_map_pattern([c_map_pair()]) -> c_map().
+
+c_map_pattern(Pairs) ->
+ #c_map{es=Pairs, is_pat=true}.
+
+-spec ann_c_map_pattern([term()], [c_map_pair()]) -> c_map().
+
+ann_c_map_pattern(As, Pairs) ->
+ #c_map{anno=As, es=Pairs, is_pat=true}.
+
+-spec is_c_map_empty(c_map() | c_literal()) -> boolean().
+
+is_c_map_empty(#c_map{ es=[] }) -> true;
+is_c_map_empty(#c_literal{val=M}) when is_map(M),map_size(M) =:= 0 -> true;
+is_c_map_empty(_) -> false.
+
+-spec is_c_map_pattern(c_map()) -> boolean().
+
+is_c_map_pattern(#c_map{is_pat=IsPat}) ->
+ IsPat.
+
+-spec ann_c_map([term()], [c_map_pair()]) -> c_map() | c_literal().
+
+ann_c_map(As, Es) ->
+ ann_c_map(As, #c_literal{val=#{}}, Es).
+
+-spec ann_c_map([term()], c_map() | c_literal(), [c_map_pair()]) -> c_map() | c_literal().
+
+ann_c_map(As,#c_literal{val=M},Es) when is_map(M) ->
+ fold_map_pairs(As,Es,M);
+ann_c_map(As,M,Es) ->
+ #c_map{arg=M, es=Es, anno=As }.
+
+fold_map_pairs(As,[],M) -> #c_literal{anno=As,val=M};
+%% M#{ K => V}
+fold_map_pairs(As,[#c_map_pair{op=#c_literal{val=assoc},key=Ck,val=Cv}=E|Es],M) ->
+ case is_lit_list([Ck,Cv]) of
+ true ->
+ [K,V] = lit_list_vals([Ck,Cv]),
+ fold_map_pairs(As,Es,maps:put(K,V,M));
+ false ->
+ #c_map{arg=#c_literal{val=M,anno=As}, es=[E|Es], anno=As }
+ end;
+%% M#{ K := V}
+fold_map_pairs(As,[#c_map_pair{op=#c_literal{val=exact},key=Ck,val=Cv}=E|Es],M) ->
+ case is_lit_list([Ck,Cv]) of
+ true ->
+ [K,V] = lit_list_vals([Ck,Cv]),
+ case maps:is_key(K,M) of
+ true -> fold_map_pairs(As,Es,maps:put(K,V,M));
+ false ->
+ #c_map{arg=#c_literal{val=M,anno=As}, es=[E|Es], anno=As }
+ end;
+ false ->
+ #c_map{arg=#c_literal{val=M,anno=As}, es=[E|Es], anno=As }
+ end.
+
+-spec update_c_map(c_map(), cerl(), [cerl()]) -> c_map() | c_literal().
+
+update_c_map(#c_map{is_pat=true}=Old, M, Es) ->
+ Old#c_map{arg=M, es=Es};
+update_c_map(#c_map{is_pat=false}=Old, M, Es) ->
+ ann_c_map(get_ann(Old), M, Es).
+
+map_pair_key(#c_map_pair{key=K}) -> K.
+map_pair_val(#c_map_pair{val=V}) -> V.
+map_pair_op(#c_map_pair{op=Op}) -> Op.
+
+-spec c_map_pair(cerl(), cerl()) -> c_map_pair().
+
+c_map_pair(Key,Val) ->
+ #c_map_pair{op=#c_literal{val=assoc},key=Key,val=Val}.
+
+-spec c_map_pair_exact(cerl(), cerl()) -> c_map_pair().
+
+c_map_pair_exact(Key,Val) ->
+ #c_map_pair{op=#c_literal{val=exact},key=Key,val=Val}.
+
+-spec ann_c_map_pair([term()], cerl(), cerl(), cerl()) ->
+ c_map_pair().
+
+ann_c_map_pair(As,Op,K,V) ->
+ #c_map_pair{op=Op, key = K, val=V, anno = As}.
+
+update_c_map_pair(Old,Op,K,V) ->
+ #c_map_pair{op=Op, key=K, val=V, anno = get_ann(Old)}.
+
+
+%% ---------------------------------------------------------------------
%% @spec c_tuple(Elements::[cerl()]) -> cerl()
%%
@@ -1803,7 +1955,7 @@ is_c_var(_) ->
false.
-%% @spec c_fname(Name::atom(), Arity::integer()) -> cerl()
+%% @spec c_fname(Name::atom(), Arity::arity()) -> cerl()
%% @equiv c_var({Name, Arity})
%% @see fname_id/1
%% @see fname_arity/1
@@ -1811,18 +1963,18 @@ is_c_var(_) ->
%% @see ann_c_fname/3
%% @see update_c_fname/3
--spec c_fname(atom(), non_neg_integer()) -> c_var().
+-spec c_fname(atom(), arity()) -> c_var().
c_fname(Atom, Arity) ->
c_var({Atom, Arity}).
-%% @spec ann_c_fname(As::[term()], Name::atom(), Arity::integer()) ->
+%% @spec ann_c_fname(As::[term()], Name::atom(), Arity::arity()) ->
%% cerl()
%% @equiv ann_c_var(As, {Atom, Arity})
%% @see c_fname/2
--spec ann_c_fname([term()], atom(), non_neg_integer()) -> c_var().
+-spec ann_c_fname([term()], atom(), arity()) -> c_var().
ann_c_fname(As, Atom, Arity) ->
ann_c_var(As, {Atom, Arity}).
@@ -1840,13 +1992,13 @@ update_c_fname(#c_var{name = {_, Arity}, anno = As}, Atom) ->
#c_var{name = {Atom, Arity}, anno = As}.
-%% @spec update_c_fname(Old::cerl(), Name::atom(), Arity::integer()) ->
+%% @spec update_c_fname(Old::cerl(), Name::atom(), Arity::arity()) ->
%% cerl()
%% @equiv update_c_var(Old, {Atom, Arity})
%% @see update_c_fname/2
%% @see c_fname/2
--spec update_c_fname(c_var(), atom(), integer()) -> c_var().
+-spec update_c_fname(c_var(), atom(), arity()) -> c_var().
update_c_fname(Node, Atom, Arity) ->
update_c_var(Node, {Atom, Arity}).
@@ -1859,7 +2011,7 @@ update_c_fname(Node, Atom, Arity) ->
%%
%% @see c_fname/2
%% @see c_var/1
-%% @see c_var_name/1
+%% @see var_name/1
-spec is_c_fname(cerl()) -> boolean().
@@ -1895,14 +2047,14 @@ fname_id(#c_var{name={A,_}}) ->
A.
-%% @spec fname_arity(cerl()) -> byte()
+%% @spec fname_arity(cerl()) -> arity()
%%
%% @doc Returns the arity part of an abstract function name variable.
%%
%% @see fname_id/1
%% @see c_fname/2
--spec fname_arity(c_var()) -> byte().
+-spec fname_arity(c_var()) -> arity().
fname_arity(#c_var{name={_,N}}) ->
N.
@@ -2348,7 +2500,7 @@ fun_body(Node) ->
Node#c_fun.body.
-%% @spec fun_arity(Node::cerl()) -> integer()
+%% @spec fun_arity(Node::cerl()) -> arity()
%%
%% @doc Returns the number of parameter subtrees of an abstract
%% fun-expression.
@@ -2359,7 +2511,7 @@ fun_body(Node) ->
%% @see c_fun/2
%% @see fun_vars/1
--spec fun_arity(c_fun()) -> non_neg_integer().
+-spec fun_arity(c_fun()) -> arity().
fun_arity(Node) ->
length(fun_vars(Node)).
@@ -2945,9 +3097,15 @@ pat_vars(Node, Vs) ->
pat_vars(cons_hd(Node), pat_vars(cons_tl(Node), Vs));
tuple ->
pat_list_vars(tuple_es(Node), Vs);
+ map ->
+ pat_list_vars(map_es(Node), Vs);
+ map_pair ->
+ %% map_pair_key is not a pattern var, excluded
+ pat_list_vars([map_pair_op(Node),map_pair_val(Node)],Vs);
binary ->
pat_list_vars(binary_segments(Node), Vs);
bitstr ->
+ %% bitstr_size is not a pattern var, excluded
pat_vars(bitstr_val(Node), Vs);
alias ->
pat_vars(alias_pat(Node), [alias_var(Node) | Vs])
@@ -3260,7 +3418,7 @@ apply_args(Node) ->
Node#c_apply.args.
-%% @spec apply_arity(Node::cerl()) -> integer()
+%% @spec apply_arity(Node::cerl()) -> arity()
%%
%% @doc Returns the number of argument subtrees of an abstract
%% function application.
@@ -3272,7 +3430,7 @@ apply_args(Node) ->
%% @see c_apply/2
%% @see apply_args/1
--spec apply_arity(c_apply()) -> non_neg_integer().
+-spec apply_arity(c_apply()) -> arity().
apply_arity(Node) ->
length(apply_args(Node)).
@@ -3378,7 +3536,7 @@ call_args(Node) ->
Node#c_call.args.
-%% @spec call_arity(Node::cerl()) -> integer()
+%% @spec call_arity(Node::cerl()) -> arity()
%%
%% @doc Returns the number of argument subtrees of an abstract
%% inter-module call.
@@ -3390,7 +3548,7 @@ call_args(Node) ->
%% @see c_call/3
%% @see call_args/1
--spec call_arity(c_call()) -> non_neg_integer().
+-spec call_arity(c_call()) -> arity().
call_arity(Node) ->
length(call_args(Node)).
@@ -3482,7 +3640,7 @@ primop_args(Node) ->
Node#c_primop.args.
-%% @spec primop_arity(Node::cerl()) -> integer()
+%% @spec primop_arity(Node::cerl()) -> arity()
%%
%% @doc Returns the number of argument subtrees of an abstract
%% primitive operation call.
@@ -3494,7 +3652,7 @@ primop_args(Node) ->
%% @see c_primop/2
%% @see primop_args/1
--spec primop_arity(c_primop()) -> non_neg_integer().
+-spec primop_arity(c_primop()) -> arity().
primop_arity(Node) ->
length(primop_args(Node)).
@@ -3531,7 +3689,7 @@ c_try(Expr, Vs, Body, Evs, Handler) ->
%% @spec ann_c_try(As::[term()], Expression::cerl(),
%% Variables::[cerl()], Body::cerl(),
%% EVars::[cerl()], Handler::cerl()) -> cerl()
-%% @see c_try/3
+%% @see c_try/5
-spec ann_c_try([term()], cerl(), [cerl()], cerl(), [cerl()], cerl()) ->
c_try().
@@ -3544,7 +3702,7 @@ ann_c_try(As, Expr, Vs, Body, Evs, Handler) ->
%% @spec update_c_try(Old::cerl(), Expression::cerl(),
%% Variables::[cerl()], Body::cerl(),
%% EVars::[cerl()], Handler::cerl()) -> cerl()
-%% @see c_try/3
+%% @see c_try/5
-spec update_c_try(c_try(), cerl(), [cerl()], cerl(), [cerl()], cerl()) ->
c_try().
@@ -3559,7 +3717,7 @@ update_c_try(Node, Expr, Vs, Body, Evs, Handler) ->
%% @doc Returns <code>true</code> if <code>Node</code> is an abstract
%% try-expression, otherwise <code>false</code>.
%%
-%% @see c_try/3
+%% @see c_try/5
-spec is_c_try(cerl()) -> boolean().
@@ -3573,7 +3731,7 @@ is_c_try(_) ->
%%
%% @doc Returns the expression subtree of an abstract try-expression.
%%
-%% @see c_try/3
+%% @see c_try/5
-spec try_arg(c_try()) -> cerl().
@@ -3586,7 +3744,7 @@ try_arg(Node) ->
%% @doc Returns the list of success variable subtrees of an abstract
%% try-expression.
%%
-%% @see c_try/3
+%% @see c_try/5
-spec try_vars(c_try()) -> [cerl()].
@@ -3598,7 +3756,7 @@ try_vars(Node) ->
%%
%% @doc Returns the success body subtree of an abstract try-expression.
%%
-%% @see c_try/3
+%% @see c_try/5
-spec try_body(c_try()) -> cerl().
@@ -3611,7 +3769,7 @@ try_body(Node) ->
%% @doc Returns the list of exception variable subtrees of an abstract
%% try-expression.
%%
-%% @see c_try/3
+%% @see c_try/5
-spec try_evars(c_try()) -> [cerl()].
@@ -3624,7 +3782,7 @@ try_evars(Node) ->
%% @doc Returns the exception body subtree of an abstract
%% try-expression.
%%
-%% @see c_try/3
+%% @see c_try/5
-spec try_handler(c_try()) -> cerl().
@@ -3646,7 +3804,7 @@ try_handler(Node) ->
%% @see update_c_catch/2
%% @see is_c_catch/1
%% @see catch_body/1
-%% @see c_try/3
+%% @see c_try/5
-spec c_catch(cerl()) -> c_catch().
@@ -3803,7 +3961,6 @@ data_type(#c_cons{}) ->
data_type(#c_tuple{}) ->
tuple.
-
%% @spec data_es(Node::cerl()) -> [cerl()]
%%
%% @doc Returns the list of subtrees of a data constructor node. If
@@ -3835,7 +3992,6 @@ data_es(#c_cons{hd = H, tl = T}) ->
data_es(#c_tuple{es = Es}) ->
Es.
-
%% @spec data_arity(Node::cerl()) -> integer()
%%
%% @doc Returns the number of subtrees of a data constructor
@@ -3892,7 +4048,6 @@ ann_make_data(As, {atomic, V}, []) -> #c_literal{val = V, anno = As};
ann_make_data(As, cons, [H, T]) -> ann_c_cons(As, H, T);
ann_make_data(As, tuple, Es) -> ann_c_tuple(As, Es).
-
%% @spec update_data(Old::cerl(), Type::dtype(),
%% Elements::[cerl()]) -> cerl()
%% @see make_data/2
@@ -4022,6 +4177,10 @@ subtrees(T) ->
[[cons_hd(T)], [cons_tl(T)]];
tuple ->
[tuple_es(T)];
+ map ->
+ [map_es(T)];
+ map_pair ->
+ [[map_pair_op(T)],[map_pair_key(T)],[map_pair_val(T)]];
'let' ->
[let_vars(T), [let_arg(T)], [let_body(T)]];
seq ->
@@ -4143,6 +4302,9 @@ ann_make_tree(As, bitstr, [[V],[S],[U],[T],[Fs]]) ->
ann_c_bitstr(As, V, S, U, T, Fs);
ann_make_tree(As, cons, [[H], [T]]) -> ann_c_cons(As, H, T);
ann_make_tree(As, tuple, [Es]) -> ann_c_tuple(As, Es);
+ann_make_tree(As, map, [Es]) -> ann_c_map(As, Es);
+ann_make_tree(As, map, [[A], Es]) -> ann_c_map(As, A, Es);
+ann_make_tree(As, map_pair, [[Op], [K], [V]]) -> ann_c_map_pair(As, Op, K, V);
ann_make_tree(As, 'let', [Vs, [A], [B]]) -> ann_c_let(As, Vs, A, B);
ann_make_tree(As, seq, [[A], [B]]) -> ann_c_seq(As, A, B);
ann_make_tree(As, apply, [[Op], Es]) -> ann_c_apply(As, Op, Es);
@@ -4272,12 +4434,8 @@ meta_1(cons, Node) ->
%% we get exactly one element, we generate a 'c_cons' call
%% instead of 'make_list' to reconstruct the node.
case split_list(Node) of
- {[H], none} ->
- meta_call(c_cons, [meta(H), meta(c_nil())]);
{[H], Node1} ->
meta_call(c_cons, [meta(H), meta(Node1)]);
- {L, none} ->
- meta_call(make_list, [make_list(meta_list(L))]);
{L, Node1} ->
meta_call(make_list,
[make_list(meta_list(L)), meta(Node1)])
@@ -4364,8 +4522,6 @@ split_list(Node, L) ->
case type(Node) of
cons when A =:= [] ->
split_list(cons_tl(Node), [cons_hd(Node) | L]);
- nil when A =:= [] ->
- {lists:reverse(L), none};
_ ->
{lists:reverse(L), Node}
end.
diff --git a/lib/compiler/src/cerl_clauses.erl b/lib/compiler/src/cerl_clauses.erl
index 99fa8dd9d5..805095e30c 100644
--- a/lib/compiler/src/cerl_clauses.erl
+++ b/lib/compiler/src/cerl_clauses.erl
@@ -1,18 +1,19 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2001-2010. All Rights Reserved.
+%% Copyright Ericsson AB 2001-2016. All Rights Reserved.
%%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
%%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
%%
%% %CopyrightEnd%
@@ -354,6 +355,29 @@ match(P, E, Bs) ->
{false, Bs}
end
end;
+ map ->
+ %% The most we can do is to say "definitely no match" if a
+ %% map pattern is matched against non-map data.
+ case E of
+ any ->
+ {false, Bs};
+ _ ->
+ case type(E) of
+ literal ->
+ case is_map(concrete(E)) of
+ false ->
+ none;
+ true ->
+ {false, Bs}
+ end;
+ cons ->
+ none;
+ tuple ->
+ none;
+ _ ->
+ {false, Bs}
+ end
+ end;
_ ->
match_1(P, E, Bs)
end.
diff --git a/lib/compiler/src/cerl_inline.erl b/lib/compiler/src/cerl_inline.erl
index 2e7554c1ff..2a8cf2e758 100644
--- a/lib/compiler/src/cerl_inline.erl
+++ b/lib/compiler/src/cerl_inline.erl
@@ -1,18 +1,19 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2001-2012. All Rights Reserved.
+%% Copyright Ericsson AB 2001-2016. All Rights Reserved.
%%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
%%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
%%
%% %CopyrightEnd%
%%
@@ -42,7 +43,7 @@
bitstr_flags/1, binary_segments/1, update_c_alias/3,
update_c_apply/3, update_c_binary/2, update_c_bitstr/6,
update_c_call/4, update_c_case/3, update_c_catch/2,
- update_c_clause/4, c_fun/2, c_int/1, c_let/3,
+ update_c_clause/4, c_fun/2, c_int/1, c_let/3, ann_c_let/4,
update_c_let/4, update_c_letrec/3, update_c_module/5,
update_c_primop/3, update_c_receive/4, update_c_seq/3,
c_seq/2, update_c_try/6, c_tuple/1, update_c_values/2,
@@ -51,8 +52,8 @@
catch_body/1, clause_body/1, clause_guard/1,
clause_pats/1, clause_vars/1, concrete/1, cons_hd/1,
cons_tl/1, data_arity/1, data_es/1, data_type/1,
- fun_body/1, fun_vars/1, get_ann/1, int_val/1,
- is_c_atom/1, is_c_cons/1, is_c_fun/1, is_c_int/1,
+ fname_arity/1, fun_body/1, fun_vars/1, get_ann/1, int_val/1,
+ is_c_atom/1, is_c_cons/1, is_c_fname/1, is_c_int/1,
is_c_list/1, is_c_seq/1, is_c_tuple/1, is_c_var/1,
is_data/1, is_literal/1, is_literal_term/1, let_arg/1,
let_body/1, let_vars/1, letrec_body/1, letrec_defs/1,
@@ -63,7 +64,11 @@
receive_clauses/1, receive_timeout/1, seq_arg/1,
seq_body/1, set_ann/2, try_arg/1, try_body/1, try_vars/1,
try_evars/1, try_handler/1, tuple_es/1, tuple_arity/1,
- type/1, values_es/1, var_name/1]).
+ type/1, values_es/1, var_name/1,
+ map_arg/1, map_es/1, update_c_map/3,
+ update_c_map_pair/4,
+ map_pair_op/1, map_pair_key/1, map_pair_val/1
+ ]).
-import(lists, [foldl/3, foldr/3, mapfoldl/3, reverse/1]).
@@ -128,6 +133,8 @@ weight(call) -> 3; % Assume remote-calls as efficient as `apply'.
weight(primop) -> 2; % Assume more efficient than `apply'.
weight(binary) -> 4; % Initialisation base cost.
weight(bitstr) -> 3; % Coding/decoding a value; like a primop.
+weight(map) -> 4; % Initialisation base cost.
+weight(map_pair) -> 3; % Coding/decoding a value; like a primop.
weight(module) -> 1. % Like a letrec with a constant body
%% These "reference" structures are used for variables and function
@@ -333,6 +340,8 @@ i(E, Ctxt, Ren, Env, S0) ->
i_catch(E, Ctxt, Ren, Env, S);
binary ->
i_binary(E, Ren, Env, S);
+ map ->
+ i_map(E, Ctxt, Ren, Env, S);
module ->
i_module(E, Ctxt, Ren, Env, S)
end
@@ -437,15 +446,14 @@ i_var_1(R, Opnd, Ctxt, Env, S) ->
residualize_var(R, S);
false ->
S1 = st__mark_inner_pending(L, S),
- case catch {ok, visit(Opnd, S1)} of
- {ok, {E, S2}} ->
+ try visit(Opnd, S1) of
+ {E, S2} ->
%% Note that we pass the current environment and
%% context to `copy', but not the current renaming.
S3 = st__clear_inner_pending(L, S2),
- copy(R, Opnd, E, Ctxt, Env, S3);
- {'EXIT', X} ->
- exit(X);
- X ->
+ copy(R, Opnd, E, Ctxt, Env, S3)
+ catch
+ throw:X ->
%% If we use destructive update for the
%% `inner-pending' flag, we must make sure to clear
%% it also if we make a nonlocal return.
@@ -1022,8 +1030,17 @@ i_apply(E, Ctxt, Ren, Env, S) ->
visit_and_count_size(Opnd, S)
end,
S3, Opnds),
- N = apply_size(length(Es)),
- {update_c_apply(E, E1, Es), count_size(N, S4)}
+ Arity = length(Es),
+ E2 = case is_c_fname(E1) andalso length(Es) =/= fname_arity(E1) of
+ true ->
+ V = new_var(Env),
+ ann_c_let(get_ann(E), [V], E1,
+ update_c_apply(E, V, Es));
+ false ->
+ update_c_apply(E, E1, Es)
+ end,
+ N = apply_size(Arity),
+ {E2, count_size(N, S4)}
end.
apply_size(A) ->
@@ -1111,8 +1128,8 @@ i_call_3(M, F, As, E, Ctxt, Env, S) ->
%% Note that we extract the results of argument expessions here; the
%% expressions could still be sequences with side effects.
Vs = [concrete(result(A)) || A <- As],
- case catch {ok, apply(atom_val(M), atom_val(F), Vs)} of
- {ok, V} ->
+ try apply(atom_val(M), atom_val(F), Vs) of
+ V ->
%% Evaluation completed normally - try to turn the result
%% back into a syntax tree (representing a literal).
case is_literal_term(V) of
@@ -1125,8 +1142,9 @@ i_call_3(M, F, As, E, Ctxt, Env, S) ->
false ->
%% The result could not be represented as a literal.
i_call_4(M, F, As, E, Ctxt, Env, S)
- end;
- _ ->
+ end
+ catch
+ error:_ ->
%% The evaluation attempt did not complete normally.
i_call_4(M, F, As, E, Ctxt, Env, S)
end.
@@ -1324,6 +1342,25 @@ i_bitstr(E, Ren, Env, S) ->
S3 = count_size(weight(bitstr), S2),
{update_c_bitstr(E, Val, Size, Unit, Type, Flags), S3}.
+i_map(E, Ctx, Ren, Env, S0) ->
+ %% Visit the segments for value.
+ {M1, S1} = i(map_arg(E), value, Ren, Env, S0),
+ {Es, S2} = mapfoldl(fun (E, S) ->
+ i_map_pair(E, Ctx, Ren, Env, S)
+ end, S1, map_es(E)),
+ S3 = count_size(weight(map), S2),
+ {update_c_map(E, M1,Es), S3}.
+
+i_map_pair(E, Ctx, Ren, Env, S0) ->
+ %% It is not necessary to visit the Op field
+ %% since it is always a literal.
+ {Key, S1} = i(map_pair_key(E), value, Ren, Env, S0),
+ {Val, S2} = i(map_pair_val(E), Ctx, Ren, Env, S1),
+ Op = map_pair_op(E),
+ S3 = count_size(weight(map_pair), S2),
+ {update_c_map_pair(E, Op, Key, Val), S3}.
+
+
%% This is a simplified version of `i_pattern', for lists of parameter
%% variables only. It does not modify the state.
@@ -1383,6 +1420,12 @@ i_pattern(E, Ren, Env, Ren0, Env0, S) ->
S, binary_segments(E)),
S2 = count_size(weight(binary), S1),
{update_c_binary(E, Es), S2};
+ map ->
+ {Es, S1} = mapfoldl(fun (E, S) ->
+ i_map_pair_pattern(E, Ren, Env, Ren0, Env0, S)
+ end, S, map_es(E)),
+ S2 = count_size(weight(map), S1),
+ {update_c_map(E, map_arg(E), Es), S2};
_ ->
case is_literal(E) of
true ->
@@ -1416,6 +1459,15 @@ i_bitstr_pattern(E, Ren, Env, Ren0, Env0, S) ->
S3 = count_size(weight(bitstr), S2),
{update_c_bitstr(E, Val, Size, Unit, Type, Flags), S3}.
+i_map_pair_pattern(E, Ren, Env, Ren0, Env0, S) ->
+ %% It is not necessary to visit the Op it is always a literal.
+ %% Key is an expression
+ {Key, S1} = i(map_pair_key(E), value, Ren0, Env0, S),
+ {Val, S2} = i_pattern(map_pair_val(E), Ren, Env, Ren0, Env0, S1),
+ Op = map_pair_op(E), %% should be 'exact' literal
+ S3 = count_size(weight(map_pair), S2),
+ {update_c_map_pair(E, Op, Key, Val), S3}.
+
%% ---------------------------------------------------------------------
%% Other central inlining functions
@@ -1578,7 +1630,7 @@ make_let_binding_1(R, E, S) ->
%% completely.
copy(R, Opnd, E, Ctxt, Env, S) ->
- case is_c_var(E) of
+ case is_c_var(E) andalso not is_c_fname(E) of
true ->
%% The operand reduces to another variable - get its
%% ref-structure and attempt to propagate further.
@@ -1628,12 +1680,12 @@ copy_var(R, Ctxt, Env, S) ->
end.
copy_1(R, Opnd, E, Ctxt, Env, S) ->
- %% Fun-expression (lambdas) are a bit special; they are copyable,
- %% but should preferably not be duplicated, so they should not be
- %% copy propagated except into application contexts, where they can
- %% be inlined.
- case is_c_fun(E) of
- true ->
+ case type(E) of
+ 'fun' ->
+ %% Fun-expression (lambdas) are a bit special; they are copyable,
+ %% but should preferably not be duplicated, so they should not be
+ %% copy propagated except into application contexts, where they can
+ %% be inlined.
case Ctxt of
#app{} ->
%% First test if the operand is "outer-pending"; if
@@ -1649,7 +1701,28 @@ copy_1(R, Opnd, E, Ctxt, Env, S) ->
_ ->
residualize_var(R, S)
end;
- false ->
+ var ->
+ %% Variables at this point only refer to local functions; they are
+ %% copyable but can't appear in guards, so they should not be
+ %% copy propagated except into application contexts, where they can
+ %% be inlined.
+ case Ctxt of
+ #app{} ->
+ %% First test if the operand is "outer-pending"; if
+ %% so, don't inline.
+ case st__test_outer_pending(Opnd#opnd.loc, S) of
+ false ->
+ R1 = env__get(var_name(E), Opnd#opnd.env),
+ copy_var(R1, Ctxt, Env, S);
+ true ->
+ %% Cyclic reference forced inlining to stop
+ %% (avoiding infinite unfolding).
+ residualize_var(R, S)
+ end;
+ _ ->
+ residualize_var(R, S)
+ end;
+ _ ->
%% We have no other cases to handle here
residualize_var(R, S)
end.
@@ -1664,12 +1737,11 @@ copy_1(R, Opnd, E, Ctxt, Env, S) ->
copy_inline(R, Opnd, E, Ctxt, Env, S) ->
S1 = st__mark_outer_pending(Opnd#opnd.loc, S),
- case catch {ok, copy_inline_1(R, E, Ctxt, Env, S1)} of
- {ok, {E1, S2}} ->
- {E1, st__clear_outer_pending(Opnd#opnd.loc, S2)};
- {'EXIT', X} ->
- exit(X);
- X ->
+ try copy_inline_1(R, E, Ctxt, Env, S1) of
+ {E1, S2} ->
+ {E1, st__clear_outer_pending(Opnd#opnd.loc, S2)}
+ catch
+ throw:X ->
%% If we use destructive update for the `outer-pending'
%% flag, we must make sure to clear it upon a nonlocal
%% return.
@@ -1686,19 +1758,16 @@ copy_inline_1(R, E, Ctxt, Env, S) ->
copy_inline_2(R, E, Ctxt, Env, S);
false ->
S1 = new_active_effort(get_effort_limit(S), S),
- case catch {ok, copy_inline_2(R, E, Ctxt, Env, S1)} of
- {ok, {E1, S2}} ->
+ try copy_inline_2(R, E, Ctxt, Env, S1) of
+ {E1, S2} ->
%% Revert to the old effort counter.
- {E1, revert_effort(S, S2)};
- {counter_exceeded, effort, _} ->
+ {E1, revert_effort(S, S2)}
+ catch
+ throw:{counter_exceeded, effort, _} ->
%% Aborted this inlining attempt because too much
%% effort was spent. Residualize the variable and
%% revert to the previous state.
- residualize_var(R, S);
- {'EXIT', X} ->
- exit(X);
- X ->
- throw(X)
+ residualize_var(R, S)
end
end.
@@ -1724,11 +1793,12 @@ copy_inline_2(R, E, Ctxt, Env, S) ->
%% close to zero at this point. (This is an extension to the
%% original algorithm.)
S1 = new_active_size(Limit + apply_size(length(Ctxt#app.opnds)), S),
- case catch {ok, inline(E, Ctxt, ren__identity(), Env, S1)} of
- {ok, {E1, S2}} ->
+ try inline(E, Ctxt, ren__identity(), Env, S1) of
+ {E1, S2} ->
%% Revert to the old size counter.
- {E1, revert_size(S, S2)};
- {counter_exceeded, size, S2} ->
+ {E1, revert_size(S, S2)}
+ catch
+ throw:{counter_exceeded, size, S2} ->
%% Aborted this inlining attempt because it got too big.
%% Residualize the variable and revert to the old size
%% counter. (It is important that we do not also revert the
@@ -1741,11 +1811,7 @@ copy_inline_2(R, E, Ctxt, Env, S) ->
%% must make sure to clear the flags of any nested
%% app-contexts upon aborting; see `inline' for details.
S4 = reset_nested_apps(Ctxt, S3), % for effect
- residualize_var(R, S4);
- {'EXIT', X} ->
- exit(X);
- X ->
- throw(X)
+ residualize_var(R, S4)
end.
reset_nested_apps(#app{ctxt = Ctxt, loc = L}, S) ->
diff --git a/lib/compiler/src/cerl_sets.erl b/lib/compiler/src/cerl_sets.erl
new file mode 100644
index 0000000000..0361186713
--- /dev/null
+++ b/lib/compiler/src/cerl_sets.erl
@@ -0,0 +1,207 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2000-2015. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+
+-module(cerl_sets).
+
+%% Standard interface.
+-export([new/0,is_set/1,size/1,to_list/1,from_list/1]).
+-export([is_element/2,add_element/2,del_element/2]).
+-export([union/2,union/1,intersection/2,intersection/1]).
+-export([is_disjoint/2]).
+-export([subtract/2,is_subset/2]).
+-export([fold/3,filter/2]).
+
+-export_type([set/0, set/1]).
+
+%%------------------------------------------------------------------------------
+
+-type set() :: set(_).
+-opaque set(Element) :: #{Element => 'ok'}.
+
+%%------------------------------------------------------------------------------
+
+%% new() -> Set
+-spec new() -> set().
+
+new() -> #{}.
+
+%% is_set(Set) -> boolean().
+%% Return 'true' if Set is a set of elements, else 'false'.
+-spec is_set(Set) -> boolean() when
+ Set :: term().
+
+is_set(S) when is_map(S) -> true;
+is_set(_) -> false.
+
+%% size(Set) -> int().
+%% Return the number of elements in Set.
+-spec size(Set) -> non_neg_integer() when
+ Set :: set().
+
+size(S) -> maps:size(S).
+
+%% to_list(Set) -> [Elem].
+%% Return the elements in Set as a list.
+-spec to_list(Set) -> List when
+ Set :: set(Element),
+ List :: [Element].
+
+to_list(S) -> maps:keys(S).
+
+%% from_list([Elem]) -> Set.
+%% Build a set from the elements in List.
+-spec from_list(List) -> Set when
+ List :: [Element],
+ Set :: set(Element).
+from_list(Ls) -> maps:from_list([{K,ok}||K<-Ls]).
+
+%% is_element(Element, Set) -> boolean().
+%% Return 'true' if Element is an element of Set, else 'false'.
+-spec is_element(Element, Set) -> boolean() when
+ Set :: set(Element).
+
+is_element(E,S) ->
+ case S of
+ #{E := _} -> true;
+ _ -> false
+ end.
+
+%% add_element(Element, Set) -> Set.
+%% Return Set with Element inserted in it.
+-spec add_element(Element, Set1) -> Set2 when
+ Set1 :: set(Element),
+ Set2 :: set(Element).
+
+add_element(E,S) -> S#{E=>ok}.
+
+-spec del_element(Element, Set1) -> Set2 when
+ Set1 :: set(Element),
+ Set2 :: set(Element).
+
+%% del_element(Element, Set) -> Set.
+%% Return Set but with Element removed.
+del_element(E,S) -> maps:remove(E,S).
+
+%% union(Set1, Set2) -> Set
+%% Return the union of Set1 and Set2.
+-spec union(Set1, Set2) -> Set3 when
+ Set1 :: set(Element),
+ Set2 :: set(Element),
+ Set3 :: set(Element).
+
+union(S1,S2) -> maps:merge(S1,S2).
+
+%% union([Set]) -> Set
+%% Return the union of the list of sets.
+-spec union(SetList) -> Set when
+ SetList :: [set(Element)],
+ Set :: set(Element).
+
+union([S1,S2|Ss]) ->
+ union1(union(S1, S2), Ss);
+union([S]) -> S;
+union([]) -> new().
+
+union1(S1, [S2|Ss]) ->
+ union1(union(S1, S2), Ss);
+union1(S1, []) -> S1.
+
+%% intersection(Set1, Set2) -> Set.
+%% Return the intersection of Set1 and Set2.
+-spec intersection(Set1, Set2) -> Set3 when
+ Set1 :: set(Element),
+ Set2 :: set(Element),
+ Set3 :: set(Element).
+
+intersection(S1, S2) ->
+ filter(fun (E) -> is_element(E, S1) end, S2).
+
+%% intersection([Set]) -> Set.
+%% Return the intersection of the list of sets.
+-spec intersection(SetList) -> Set when
+ SetList :: [set(Element),...],
+ Set :: set(Element).
+
+intersection([S1,S2|Ss]) ->
+ intersection1(intersection(S1, S2), Ss);
+intersection([S]) -> S.
+
+intersection1(S1, [S2|Ss]) ->
+ intersection1(intersection(S1, S2), Ss);
+intersection1(S1, []) -> S1.
+
+%% is_disjoint(Set1, Set2) -> boolean().
+%% Check whether Set1 and Set2 are disjoint.
+-spec is_disjoint(Set1, Set2) -> boolean() when
+ Set1 :: set(Element),
+ Set2 :: set(Element).
+
+is_disjoint(S1, S2) when map_size(S1) < map_size(S2) ->
+ fold(fun (_, false) -> false;
+ (E, true) -> not is_element(E, S2)
+ end, true, S1);
+is_disjoint(S1, S2) ->
+ fold(fun (_, false) -> false;
+ (E, true) -> not is_element(E, S1)
+ end, true, S2).
+
+%% subtract(Set1, Set2) -> Set.
+%% Return all and only the elements of Set1 which are not also in
+%% Set2.
+-spec subtract(Set1, Set2) -> Set3 when
+ Set1 :: set(Element),
+ Set2 :: set(Element),
+ Set3 :: set(Element).
+
+subtract(S1, S2) ->
+ filter(fun (E) -> not is_element(E, S2) end, S1).
+
+%% is_subset(Set1, Set2) -> boolean().
+%% Return 'true' when every element of Set1 is also a member of
+%% Set2, else 'false'.
+-spec is_subset(Set1, Set2) -> boolean() when
+ Set1 :: set(Element),
+ Set2 :: set(Element).
+
+is_subset(S1, S2) ->
+ fold(fun (E, Sub) -> Sub andalso is_element(E, S2) end, true, S1).
+
+%% fold(Fun, Accumulator, Set) -> Accumulator.
+%% Fold function Fun over all elements in Set and return Accumulator.
+-spec fold(Function, Acc0, Set) -> Acc1 when
+ Function :: fun((Element, AccIn) -> AccOut),
+ Set :: set(Element),
+ Acc0 :: Acc,
+ Acc1 :: Acc,
+ AccIn :: Acc,
+ AccOut :: Acc.
+
+fold(F, Init, D) ->
+ lists:foldl(fun(E,Acc) -> F(E,Acc) end,Init,maps:keys(D)).
+
+%% filter(Fun, Set) -> Set.
+%% Filter Set with Fun.
+-spec filter(Pred, Set1) -> Set2 when
+ Pred :: fun((Element) -> boolean()),
+ Set1 :: set(Element),
+ Set2 :: set(Element).
+
+filter(F, D) ->
+ maps:from_list(lists:filter(fun({K,_}) -> F(K) end, maps:to_list(D))).
diff --git a/lib/compiler/src/cerl_trees.erl b/lib/compiler/src/cerl_trees.erl
index 1e3755025f..b3decbec1f 100644
--- a/lib/compiler/src/cerl_trees.erl
+++ b/lib/compiler/src/cerl_trees.erl
@@ -1,32 +1,33 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2001-2010. All Rights Reserved.
+%% Copyright Ericsson AB 2001-2016. All Rights Reserved.
%%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
%%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
%%
%% %CopyrightEnd%
%% @doc Basic functions on Core Erlang abstract syntax trees.
%%
%% <p>Syntax trees are defined in the module <a
-%% href=""><code>cerl</code></a>.</p>
+%% href="cerl"><code>cerl</code></a>.</p>
%%
%% @type cerl() = cerl:cerl()
-module(cerl_trees).
-export([depth/1, fold/3, free_variables/1, get_label/1, label/1, label/2,
- map/2, mapfold/3, size/1, variables/1]).
+ map/2, mapfold/3, mapfold/4, size/1, variables/1]).
-import(cerl, [alias_pat/1, alias_var/1, ann_c_alias/3, ann_c_apply/3,
ann_c_binary/2, ann_c_bitstr/6, ann_c_call/4,
@@ -55,7 +56,16 @@
update_c_let/4, update_c_letrec/3, update_c_module/5,
update_c_primop/3, update_c_receive/4, update_c_seq/3,
update_c_try/6, update_c_tuple/2, update_c_tuple_skel/2,
- update_c_values/2, values_es/1, var_name/1]).
+ update_c_values/2, values_es/1, var_name/1,
+
+ map_arg/1, map_es/1,
+ ann_c_map/3,
+ update_c_map/3,
+ is_c_map_pattern/1, ann_c_map_pattern/2,
+ map_pair_key/1,map_pair_val/1,map_pair_op/1,
+ ann_c_map_pair/4,
+ update_c_map_pair/4
+ ]).
%% ---------------------------------------------------------------------
@@ -129,6 +139,12 @@ map_1(F, T) ->
map(F, cons_tl(T)));
tuple ->
update_c_tuple_skel(T, map_list(F, tuple_es(T)));
+ map ->
+ update_c_map(T, map(F, map_arg(T)), map_list(F, map_es(T)));
+ map_pair ->
+ update_c_map_pair(T, map(F, map_pair_op(T)),
+ map(F, map_pair_key(T)),
+ map(F, map_pair_val(T)));
'let' ->
update_c_let(T, map_list(F, let_vars(T)),
map(F, let_arg(T)),
@@ -235,6 +251,14 @@ fold_1(F, S, T) ->
fold(F, fold(F, S, cons_hd(T)), cons_tl(T));
tuple ->
fold_list(F, S, tuple_es(T));
+ map ->
+ fold_list(F, S, map_es(T));
+ map_pair ->
+ fold(F,
+ fold(F,
+ fold(F, S, map_pair_op(T)),
+ map_pair_key(T)),
+ map_pair_val(T));
'let' ->
fold(F, fold(F, fold_list(F, S, let_vars(T)),
let_arg(T)),
@@ -317,127 +341,162 @@ fold_pairs(_, S, []) ->
%% starting with the given value <code>Initial</code>, while doing a
%% post-order traversal of the tree, much like <code>fold/3</code>.
%%
+%% This is the same as mapfold/4, with an identity function as the
+%% pre-operation.
+%%
%% @see map/2
%% @see fold/3
+%% @see mapfold/4
-spec mapfold(fun((cerl:cerl(), term()) -> {cerl:cerl(), term()}),
term(), cerl:cerl()) -> {cerl:cerl(), term()}.
mapfold(F, S0, T) ->
+ mapfold(fun(T0, A) -> {T0, A} end, F, S0, T).
+
+
+%% @spec mapfold(Pre, Post, Initial::term(), Tree::cerl()) ->
+%% {cerl(), term()}
+%%
+%% Pre = Post = (cerl(), term()) -> {cerl(), term()}
+%%
+%% @doc Does a combined map/fold operation on the nodes of the
+%% tree. It begins by calling <code>Pre</code> on the tree, using the
+%% <code>Initial</code> value. It then deconstructs the top node of
+%% the returned tree and recurses on the children, using the returned
+%% value as the new initial and carrying the returned values from one
+%% call to the next. Finally it reassembles the top node from the
+%% children, calls <code>Post</code> on it and returns the result.
+
+-spec mapfold(fun((cerl:cerl(), term()) -> {cerl:cerl(), term()}),
+ fun((cerl:cerl(), term()) -> {cerl:cerl(), term()}),
+ term(), cerl:cerl()) -> {cerl:cerl(), term()}.
+
+mapfold(Pre, Post, S00, T0) ->
+ {T, S0} = Pre(T0, S00),
case type(T) of
literal ->
case concrete(T) of
[_ | _] ->
- {T1, S1} = mapfold(F, S0, cons_hd(T)),
- {T2, S2} = mapfold(F, S1, cons_tl(T)),
- F(update_c_cons(T, T1, T2), S2);
+ {T1, S1} = mapfold(Pre, Post, S0, cons_hd(T)),
+ {T2, S2} = mapfold(Pre, Post, S1, cons_tl(T)),
+ Post(update_c_cons(T, T1, T2), S2);
V when tuple_size(V) > 0 ->
- {Ts, S1} = mapfold_list(F, S0, tuple_es(T)),
- F(update_c_tuple(T, Ts), S1);
+ {Ts, S1} = mapfold_list(Pre, Post, S0, tuple_es(T)),
+ Post(update_c_tuple(T, Ts), S1);
_ ->
- F(T, S0)
+ Post(T, S0)
end;
var ->
- F(T, S0);
+ Post(T, S0);
values ->
- {Ts, S1} = mapfold_list(F, S0, values_es(T)),
- F(update_c_values(T, Ts), S1);
+ {Ts, S1} = mapfold_list(Pre, Post, S0, values_es(T)),
+ Post(update_c_values(T, Ts), S1);
cons ->
- {T1, S1} = mapfold(F, S0, cons_hd(T)),
- {T2, S2} = mapfold(F, S1, cons_tl(T)),
- F(update_c_cons_skel(T, T1, T2), S2);
+ {T1, S1} = mapfold(Pre, Post, S0, cons_hd(T)),
+ {T2, S2} = mapfold(Pre, Post, S1, cons_tl(T)),
+ Post(update_c_cons_skel(T, T1, T2), S2);
tuple ->
- {Ts, S1} = mapfold_list(F, S0, tuple_es(T)),
- F(update_c_tuple_skel(T, Ts), S1);
+ {Ts, S1} = mapfold_list(Pre, Post, S0, tuple_es(T)),
+ Post(update_c_tuple_skel(T, Ts), S1);
+ map ->
+ {M , S1} = mapfold(Pre, Post, S0, map_arg(T)),
+ {Ts, S2} = mapfold_list(Pre, Post, S1, map_es(T)),
+ Post(update_c_map(T, M, Ts), S2);
+ map_pair ->
+ {Op, S1} = mapfold(Pre, Post, S0, map_pair_op(T)),
+ {Key, S2} = mapfold(Pre, Post, S1, map_pair_key(T)),
+ {Val, S3} = mapfold(Pre, Post, S2, map_pair_val(T)),
+ Post(update_c_map_pair(T,Op,Key,Val), S3);
'let' ->
- {Vs, S1} = mapfold_list(F, S0, let_vars(T)),
- {A, S2} = mapfold(F, S1, let_arg(T)),
- {B, S3} = mapfold(F, S2, let_body(T)),
- F(update_c_let(T, Vs, A, B), S3);
+ {Vs, S1} = mapfold_list(Pre, Post, S0, let_vars(T)),
+ {A, S2} = mapfold(Pre, Post, S1, let_arg(T)),
+ {B, S3} = mapfold(Pre, Post, S2, let_body(T)),
+ Post(update_c_let(T, Vs, A, B), S3);
seq ->
- {A, S1} = mapfold(F, S0, seq_arg(T)),
- {B, S2} = mapfold(F, S1, seq_body(T)),
- F(update_c_seq(T, A, B), S2);
+ {A, S1} = mapfold(Pre, Post, S0, seq_arg(T)),
+ {B, S2} = mapfold(Pre, Post, S1, seq_body(T)),
+ Post(update_c_seq(T, A, B), S2);
apply ->
- {E, S1} = mapfold(F, S0, apply_op(T)),
- {As, S2} = mapfold_list(F, S1, apply_args(T)),
- F(update_c_apply(T, E, As), S2);
+ {E, S1} = mapfold(Pre, Post, S0, apply_op(T)),
+ {As, S2} = mapfold_list(Pre, Post, S1, apply_args(T)),
+ Post(update_c_apply(T, E, As), S2);
call ->
- {M, S1} = mapfold(F, S0, call_module(T)),
- {N, S2} = mapfold(F, S1, call_name(T)),
- {As, S3} = mapfold_list(F, S2, call_args(T)),
- F(update_c_call(T, M, N, As), S3);
+ {M, S1} = mapfold(Pre, Post, S0, call_module(T)),
+ {N, S2} = mapfold(Pre, Post, S1, call_name(T)),
+ {As, S3} = mapfold_list(Pre, Post, S2, call_args(T)),
+ Post(update_c_call(T, M, N, As), S3);
primop ->
- {N, S1} = mapfold(F, S0, primop_name(T)),
- {As, S2} = mapfold_list(F, S1, primop_args(T)),
- F(update_c_primop(T, N, As), S2);
+ {N, S1} = mapfold(Pre, Post, S0, primop_name(T)),
+ {As, S2} = mapfold_list(Pre, Post, S1, primop_args(T)),
+ Post(update_c_primop(T, N, As), S2);
'case' ->
- {A, S1} = mapfold(F, S0, case_arg(T)),
- {Cs, S2} = mapfold_list(F, S1, case_clauses(T)),
- F(update_c_case(T, A, Cs), S2);
+ {A, S1} = mapfold(Pre, Post, S0, case_arg(T)),
+ {Cs, S2} = mapfold_list(Pre, Post, S1, case_clauses(T)),
+ Post(update_c_case(T, A, Cs), S2);
clause ->
- {Ps, S1} = mapfold_list(F, S0, clause_pats(T)),
- {G, S2} = mapfold(F, S1, clause_guard(T)),
- {B, S3} = mapfold(F, S2, clause_body(T)),
- F(update_c_clause(T, Ps, G, B), S3);
+ {Ps, S1} = mapfold_list(Pre, Post, S0, clause_pats(T)),
+ {G, S2} = mapfold(Pre, Post, S1, clause_guard(T)),
+ {B, S3} = mapfold(Pre, Post, S2, clause_body(T)),
+ Post(update_c_clause(T, Ps, G, B), S3);
alias ->
- {V, S1} = mapfold(F, S0, alias_var(T)),
- {P, S2} = mapfold(F, S1, alias_pat(T)),
- F(update_c_alias(T, V, P), S2);
+ {V, S1} = mapfold(Pre, Post, S0, alias_var(T)),
+ {P, S2} = mapfold(Pre, Post, S1, alias_pat(T)),
+ Post(update_c_alias(T, V, P), S2);
'fun' ->
- {Vs, S1} = mapfold_list(F, S0, fun_vars(T)),
- {B, S2} = mapfold(F, S1, fun_body(T)),
- F(update_c_fun(T, Vs, B), S2);
+ {Vs, S1} = mapfold_list(Pre, Post, S0, fun_vars(T)),
+ {B, S2} = mapfold(Pre, Post, S1, fun_body(T)),
+ Post(update_c_fun(T, Vs, B), S2);
'receive' ->
- {Cs, S1} = mapfold_list(F, S0, receive_clauses(T)),
- {E, S2} = mapfold(F, S1, receive_timeout(T)),
- {A, S3} = mapfold(F, S2, receive_action(T)),
- F(update_c_receive(T, Cs, E, A), S3);
+ {Cs, S1} = mapfold_list(Pre, Post, S0, receive_clauses(T)),
+ {E, S2} = mapfold(Pre, Post, S1, receive_timeout(T)),
+ {A, S3} = mapfold(Pre, Post, S2, receive_action(T)),
+ Post(update_c_receive(T, Cs, E, A), S3);
'try' ->
- {E, S1} = mapfold(F, S0, try_arg(T)),
- {Vs, S2} = mapfold_list(F, S1, try_vars(T)),
- {B, S3} = mapfold(F, S2, try_body(T)),
- {Evs, S4} = mapfold_list(F, S3, try_evars(T)),
- {H, S5} = mapfold(F, S4, try_handler(T)),
- F(update_c_try(T, E, Vs, B, Evs, H), S5);
+ {E, S1} = mapfold(Pre, Post, S0, try_arg(T)),
+ {Vs, S2} = mapfold_list(Pre, Post, S1, try_vars(T)),
+ {B, S3} = mapfold(Pre, Post, S2, try_body(T)),
+ {Evs, S4} = mapfold_list(Pre, Post, S3, try_evars(T)),
+ {H, S5} = mapfold(Pre, Post, S4, try_handler(T)),
+ Post(update_c_try(T, E, Vs, B, Evs, H), S5);
'catch' ->
- {B, S1} = mapfold(F, S0, catch_body(T)),
- F(update_c_catch(T, B), S1);
+ {B, S1} = mapfold(Pre, Post, S0, catch_body(T)),
+ Post(update_c_catch(T, B), S1);
binary ->
- {Ds, S1} = mapfold_list(F, S0, binary_segments(T)),
- F(update_c_binary(T, Ds), S1);
+ {Ds, S1} = mapfold_list(Pre, Post, S0, binary_segments(T)),
+ Post(update_c_binary(T, Ds), S1);
bitstr ->
- {Val, S1} = mapfold(F, S0, bitstr_val(T)),
- {Size, S2} = mapfold(F, S1, bitstr_size(T)),
- {Unit, S3} = mapfold(F, S2, bitstr_unit(T)),
- {Type, S4} = mapfold(F, S3, bitstr_type(T)),
- {Flags, S5} = mapfold(F, S4, bitstr_flags(T)),
- F(update_c_bitstr(T, Val, Size, Unit, Type, Flags), S5);
+ {Val, S1} = mapfold(Pre, Post, S0, bitstr_val(T)),
+ {Size, S2} = mapfold(Pre, Post, S1, bitstr_size(T)),
+ {Unit, S3} = mapfold(Pre, Post, S2, bitstr_unit(T)),
+ {Type, S4} = mapfold(Pre, Post, S3, bitstr_type(T)),
+ {Flags, S5} = mapfold(Pre, Post, S4, bitstr_flags(T)),
+ Post(update_c_bitstr(T, Val, Size, Unit, Type, Flags), S5);
letrec ->
- {Ds, S1} = mapfold_pairs(F, S0, letrec_defs(T)),
- {B, S2} = mapfold(F, S1, letrec_body(T)),
- F(update_c_letrec(T, Ds, B), S2);
+ {Ds, S1} = mapfold_pairs(Pre, Post, S0, letrec_defs(T)),
+ {B, S2} = mapfold(Pre, Post, S1, letrec_body(T)),
+ Post(update_c_letrec(T, Ds, B), S2);
module ->
- {N, S1} = mapfold(F, S0, module_name(T)),
- {Es, S2} = mapfold_list(F, S1, module_exports(T)),
- {As, S3} = mapfold_pairs(F, S2, module_attrs(T)),
- {Ds, S4} = mapfold_pairs(F, S3, module_defs(T)),
- F(update_c_module(T, N, Es, As, Ds), S4)
+ {N, S1} = mapfold(Pre, Post, S0, module_name(T)),
+ {Es, S2} = mapfold_list(Pre, Post, S1, module_exports(T)),
+ {As, S3} = mapfold_pairs(Pre, Post, S2, module_attrs(T)),
+ {Ds, S4} = mapfold_pairs(Pre, Post, S3, module_defs(T)),
+ Post(update_c_module(T, N, Es, As, Ds), S4)
end.
-mapfold_list(F, S0, [T | Ts]) ->
- {T1, S1} = mapfold(F, S0, T),
- {Ts1, S2} = mapfold_list(F, S1, Ts),
+mapfold_list(Pre, Post, S0, [T | Ts]) ->
+ {T1, S1} = mapfold(Pre, Post, S0, T),
+ {Ts1, S2} = mapfold_list(Pre, Post, S1, Ts),
{[T1 | Ts1], S2};
-mapfold_list(_, S, []) ->
+mapfold_list(_, _, S, []) ->
{[], S}.
-mapfold_pairs(F, S0, [{T1, T2} | Ps]) ->
- {T3, S1} = mapfold(F, S0, T1),
- {T4, S2} = mapfold(F, S1, T2),
- {Ps1, S3} = mapfold_pairs(F, S2, Ps),
+mapfold_pairs(Pre, Post, S0, [{T1, T2} | Ps]) ->
+ {T3, S1} = mapfold(Pre, Post, S0, T1),
+ {T4, S2} = mapfold(Pre, Post, S1, T2),
+ {Ps1, S3} = mapfold_pairs(Pre, Post, S2, Ps),
{[{T3, T4} | Ps1], S3};
-mapfold_pairs(_, S, []) ->
+mapfold_pairs(_, _, S, []) ->
{[], S}.
@@ -488,6 +547,10 @@ variables(T, S) ->
variables(cons_tl(T), S));
tuple ->
vars_in_list(tuple_es(T), S);
+ map ->
+ vars_in_list([map_arg(T)|map_es(T)], S);
+ map_pair ->
+ vars_in_list([map_pair_op(T),map_pair_key(T),map_pair_val(T)], S);
'let' ->
Vs = variables(let_body(T), S),
Vs1 = var_list_names(let_vars(T)),
@@ -604,8 +667,8 @@ vars_in_list([], _, A) ->
vars_in_defs(Ds, S) ->
vars_in_defs(Ds, S, []).
-vars_in_defs([{_, F} | Ds], S, A) ->
- vars_in_defs(Ds, S, ordsets:union(variables(F, S), A));
+vars_in_defs([{_, Post} | Ds], S, A) ->
+ vars_in_defs(Ds, S, ordsets:union(variables(Post, S), A));
vars_in_defs([], _, A) ->
A.
@@ -667,13 +730,14 @@ label(T, N, Env) ->
%% Constant literals are not labeled.
{T, N};
var ->
- case dict:find(var_name(T), Env) of
- {ok, L} ->
- {As, _} = label_ann(T, L),
- N1 = N;
- error ->
- {As, N1} = label_ann(T, N)
- end,
+ {As, N1} =
+ case dict:find(var_name(T), Env) of
+ {ok, L} ->
+ {A, _} = label_ann(T, L),
+ {A, N};
+ error ->
+ label_ann(T, N)
+ end,
{set_ann(T, As), N1};
values ->
{Ts, N1} = label_list(values_es(T), N, Env),
@@ -688,6 +752,24 @@ label(T, N, Env) ->
{Ts, N1} = label_list(tuple_es(T), N, Env),
{As, N2} = label_ann(T, N1),
{ann_c_tuple_skel(As, Ts), N2};
+ map ->
+ case is_c_map_pattern(T) of
+ false ->
+ {M, N1} = label(map_arg(T), N, Env),
+ {Ts, N2} = label_list(map_es(T), N1, Env),
+ {As, N3} = label_ann(T, N2),
+ {ann_c_map(As, M, Ts), N3};
+ true ->
+ {Ts, N1} = label_list(map_es(T), N, Env),
+ {As, N2} = label_ann(T, N1),
+ {ann_c_map_pattern(As, Ts), N2}
+ end;
+ map_pair ->
+ {Op, N1} = label(map_pair_op(T), N, Env),
+ {Key, N2} = label(map_pair_key(T), N1, Env),
+ {Val, N3} = label(map_pair_val(T), N2, Env),
+ {As, N4} = label_ann(T, N3),
+ {ann_c_map_pair(As,Op,Key,Val), N4};
'let' ->
{A, N1} = label(let_arg(T), N, Env),
{Vs, N2, Env1} = label_vars(let_vars(T), N1, Env),
diff --git a/lib/compiler/src/compile.erl b/lib/compiler/src/compile.erl
index 2ca403de54..82ff8a95f3 100644
--- a/lib/compiler/src/compile.erl
+++ b/lib/compiler/src/compile.erl
@@ -1,18 +1,19 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1996-2013. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2015. All Rights Reserved.
%%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
%%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
%%
%% %CopyrightEnd%
%%
@@ -25,6 +26,7 @@
-export([forms/1,forms/2,noenv_forms/2]).
-export([output_generated/1,noenv_output_generated/1]).
-export([options/0]).
+-export([env_compiler_options/0]).
%% Erlc interface.
-export([compile/3,compile_beam/3,compile_asm/3,compile_core/3]).
@@ -39,13 +41,19 @@
%%----------------------------------------------------------------------
+-type abstract_code() :: [erl_parse:abstract_form()].
+
-type option() :: atom() | {atom(), term()} | {'d', atom(), term()}.
--type err_info() :: {erl_scan:line(), module(), term()}. %% ErrorDescriptor
+-type err_info() :: {erl_anno:line() | 'none',
+ module(), term()}. %% ErrorDescriptor
-type errors() :: [{file:filename(), [err_info()]}].
-type warnings() :: [{file:filename(), [err_info()]}].
-type mod_ret() :: {'ok', module()}
| {'ok', module(), cerl:c_module()} %% with option 'to_core'
+ | {'ok', %% with option 'to_pp'
+ module() | [], %% module() if 'to_exp'
+ abstract_code()}
| {'ok', module(), warnings()}.
-type bin_ret() :: {'ok', module(), binary()}
| {'ok', module(), binary(), warnings()}.
@@ -76,7 +84,11 @@ file(File, Opts) when is_list(Opts) ->
file(File, Opt) ->
file(File, [Opt|?DEFAULT_OPTIONS]).
-forms(File) -> forms(File, ?DEFAULT_OPTIONS).
+-spec forms(abstract_code()) -> comp_ret().
+
+forms(Forms) -> forms(Forms, ?DEFAULT_OPTIONS).
+
+-spec forms(abstract_code(), [option()] | option()) -> comp_ret().
forms(Forms, Opts) when is_list(Opts) ->
do_compile({forms,Forms}, [binary|Opts++env_default_opts()]);
@@ -104,6 +116,8 @@ noenv_file(File, Opts) when is_list(Opts) ->
noenv_file(File, Opt) ->
noenv_file(File, [Opt|?DEFAULT_OPTIONS]).
+-spec noenv_forms(abstract_code(), [option()] | option()) -> comp_ret().
+
noenv_forms(Forms, Opts) when is_list(Opts) ->
do_compile({forms,Forms}, [binary|Opts]);
noenv_forms(Forms, Opt) when is_atom(Opt) ->
@@ -118,6 +132,14 @@ noenv_output_generated(Opts) ->
end, Passes).
%%
+%% Retrieve ERL_COMPILER_OPTIONS as a list of terms
+%%
+
+-spec env_compiler_options() -> [term()].
+
+env_compiler_options() -> env_default_opts().
+
+%%
%% Local functions
%%
@@ -131,7 +153,8 @@ env_default_opts() ->
Str when is_list(Str) ->
case erl_scan:string(Str) of
{ok,Tokens,_} ->
- case erl_parse:parse_term(Tokens ++ [{dot, 1}]) of
+ Dot = {dot, erl_anno:new(1)},
+ case erl_parse:parse_term(Tokens ++ [Dot]) of
{ok,List} when is_list(List) -> List;
{ok,Term} -> [Term];
{error,_Reason} ->
@@ -229,12 +252,27 @@ format_error({undef_parse_transform,M}) ->
format_error({core_transform,M,R}) ->
io_lib:format("error in core transform '~s': ~tp", [M, R]);
format_error({crash,Pass,Reason}) ->
- io_lib:format("internal error in ~p;\ncrash reason: ~tp", [Pass,Reason]);
+ io_lib:format("internal error in ~p;\ncrash reason: ~ts", [Pass,format_error_reason(Reason)]);
format_error({bad_return,Pass,Reason}) ->
- io_lib:format("internal error in ~p;\nbad return value: ~tp", [Pass,Reason]);
+ io_lib:format("internal error in ~p;\nbad return value: ~ts", [Pass,format_error_reason(Reason)]);
format_error({module_name,Mod,Filename}) ->
- io_lib:format("Module name '~s' does not match file name '~ts'",
- [Mod,Filename]).
+ io_lib:format("Module name '~s' does not match file name '~ts'", [Mod,Filename]);
+format_error(reparsing_invalid_unicode) ->
+ "Non-UTF-8 character(s) detected, but no encoding declared. Encode the file in UTF-8 or add \"%% coding: latin-1\" at the beginning of the file. Retrying with latin-1 encoding.".
+
+format_error_reason({Reason, Stack}) when is_list(Stack) ->
+ StackFun = fun
+ (escript, run, 2) -> true;
+ (escript, start, 1) -> true;
+ (init, start_it, 1) -> true;
+ (init, start_em, 1) -> true;
+ (_Mod, _Fun, _Arity) -> false
+ end,
+ FormatFun = fun (Term, _) -> io_lib:format("~tp", [Term]) end,
+ [io_lib:format("~tp", [Reason]),"\n\n",
+ lib:format_stacktrace(1, Stack, StackFun, FormatFun)];
+format_error_reason(Reason) ->
+ io_lib:format("~tp", [Reason]).
%% The compile state record.
-record(compile, {filename="" :: file:filename(),
@@ -269,11 +307,20 @@ internal_comp(Passes, File, Suffix, St0) ->
St1 = St0#compile{filename=File, dir=Dir, base=Base,
ifile=erlfile(Dir, Base, Suffix),
ofile=objfile(Base, St0)},
- Run = case member(time, St1#compile.options) of
- true ->
- io:format("Compiling ~tp\n", [File]),
- fun run_tc/2;
- false -> fun({_Name,Fun}, St) -> catch Fun(St) end
+ Opts = St1#compile.options,
+ Run0 = case member(time, Opts) of
+ true ->
+ io:format("Compiling ~tp\n", [File]),
+ fun run_tc/2;
+ false -> fun({_Name,Fun}, St) -> catch Fun(St) end
+ end,
+ Run = case keyfind(eprof, 1, Opts) of
+ {eprof,EprofPass} ->
+ fun(P, St) ->
+ run_eprof(P, EprofPass, St)
+ end;
+ false ->
+ Run0
end,
case fold_comp(Passes, Run, St1) of
{ok,St2} -> comp_ret_ok(St2);
@@ -304,17 +351,26 @@ fold_comp([{Name,Pass}|Ps], Run, St0) ->
fold_comp([], _Run, St) -> {ok,St}.
run_tc({Name,Fun}, St) ->
- Before0 = statistics(runtime),
+ T1 = erlang:monotonic_time(),
Val = (catch Fun(St)),
- After0 = statistics(runtime),
- {Before_c, _} = Before0,
- {After_c, _} = After0,
+ T2 = erlang:monotonic_time(),
+ Elapsed = erlang:convert_time_unit(T2 - T1, native, milli_seconds),
Mem0 = erts_debug:flat_size(Val)*erlang:system_info(wordsize),
Mem = lists:flatten(io_lib:format("~.1f kB", [Mem0/1024])),
- io:format(" ~-30s: ~10.2f s ~12s\n",
- [Name,(After_c-Before_c) / 1000,Mem]),
+ io:format(" ~-30s: ~10.3f s ~12s\n",
+ [Name,Elapsed/1000,Mem]),
Val.
+run_eprof({Name,Fun}, Name, St) ->
+ io:format("~p: Running eprof\n", [Name]),
+ c:appcall(tools, eprof, start_profiling, [[self()]]),
+ Val = (catch Fun(St)),
+ c:appcall(tools, eprof, stop_profiling, []),
+ c:appcall(tools, eprof, analyze, []),
+ Val;
+run_eprof({_,Fun}, _, St) ->
+ catch Fun(St).
+
comp_ret_ok(#compile{code=Code,warnings=Warn0,module=Mod,options=Opts}=St) ->
case werror(St) of
true ->
@@ -415,8 +471,6 @@ pass(from_core) ->
{".core",[?pass(parse_core)|core_passes()]};
pass(from_asm) ->
{".S",[?pass(beam_consult_asm)|asm_passes()]};
-pass(asm) ->
- pass(from_asm);
pass(from_beam) ->
{".beam",[?pass(read_beam_file)|binary_passes()]};
pass(_) -> none.
@@ -592,7 +646,7 @@ standard_passes() ->
{iff,'to_exp',{done,"E"}},
%% Conversion to Core Erlang.
- ?pass(core_module),
+ {pass,v3_core},
{iff,'dcore',{listing,"core"}},
{iff,'to_core0',{done,"core"}}
| core_passes()].
@@ -604,10 +658,12 @@ core_passes() ->
[{unless,no_copt,
[{core_old_inliner,fun test_old_inliner/1,fun core_old_inliner/1},
{iff,doldinline,{listing,"oldinline"}},
- ?pass(core_fold_module),
+ {pass,sys_core_fold},
+ {iff,dcorefold,{listing,"corefold"}},
{core_inline_module,fun test_core_inliner/1,fun core_inline_module/1},
{iff,dinline,{listing,"inline"}},
- {core_fold_after_inline,fun test_core_inliner/1,fun core_fold_module/1},
+ {core_fold_after_inlining,fun test_any_inliner/1,
+ fun core_fold_module_after_inlining/1},
?pass(core_transforms)]},
{iff,dcopt,{listing,"copt"}},
{iff,'to_core',{done,"core"}}]}
@@ -615,14 +671,14 @@ core_passes() ->
kernel_passes() ->
%% Destructive setelement/3 optimization and core lint.
- [?pass(core_dsetel_module),
+ [{pass,sys_core_dsetel},
{iff,dsetel,{listing,"dsetel"}},
{iff,clint,?pass(core_lint_module)},
{iff,core,?pass(save_core_code)},
%% Kernel Erlang and code generation.
- ?pass(kernel_module),
+ {pass,v3_kernel},
{iff,dkern,{listing,"kernel"}},
{iff,'to_kernel',{done,"kernel"}},
{pass,v3_life},
@@ -635,11 +691,16 @@ asm_passes() ->
%% Assembly level optimisations.
[{delay,
[{pass,beam_a},
+ {iff,da,{listing,"a"}},
{unless,no_postopt,
- [{pass,beam_block},
+ [{unless,no_reorder,{pass,beam_reorder}},
+ {iff,dre,{listing,"reorder"}},
+ {pass,beam_block},
{iff,dblk,{listing,"block"}},
{unless,no_except,{pass,beam_except}},
{iff,dexcept,{listing,"except"}},
+ {unless,no_bs_opt,{pass,beam_bs}},
+ {iff,dbs,{listing,"bs"}},
{unless,no_bopt,{pass,beam_bool}},
{iff,dbool,{listing,"bool"}},
{unless,no_topt,{pass,beam_type}},
@@ -667,6 +728,7 @@ asm_passes() ->
{iff,no_postopt,[{pass,beam_clean}]},
{pass,beam_z},
+ {iff,dz,{listing,"z"}},
{iff,dopt,{listing,"optimize"}},
{iff,'S',{listing,"S"}},
{iff,'to_asm',{done,"S"}}]},
@@ -773,20 +835,59 @@ no_native_compilation(BeamFile, #compile{options=Opts0}) ->
_ -> false
end.
-parse_module(St) ->
- Opts = St#compile.options,
- Cwd = ".",
- IncludePath = [Cwd, St#compile.dir|inc_paths(Opts)],
- R = epp:parse_file(St#compile.ifile, IncludePath, pre_defs(Opts)),
+parse_module(St0) ->
+ case do_parse_module(utf8, St0) of
+ {ok,_}=Ret ->
+ Ret;
+ {error,_}=Ret ->
+ Ret;
+ {invalid_unicode,File,Line} ->
+ case do_parse_module(latin1, St0) of
+ {ok,St} ->
+ Es = [{File,[{Line,?MODULE,reparsing_invalid_unicode}]}],
+ {ok,St#compile{warnings=Es++St#compile.warnings}};
+ {error,St} ->
+ Es = [{File,[{Line,?MODULE,reparsing_invalid_unicode}]}],
+ {error,St#compile{errors=Es++St#compile.errors}}
+ end
+ end.
+
+do_parse_module(DefEncoding, #compile{ifile=File,options=Opts,dir=Dir}=St) ->
+ R = epp:parse_file(File,
+ [{includes,[".",Dir|inc_paths(Opts)]},
+ {macros,pre_defs(Opts)},
+ {default_encoding,DefEncoding},
+ extra]),
case R of
- {ok,Forms} ->
- Encoding = epp:read_encoding(St#compile.ifile),
- {ok,St#compile{code=Forms,encoding=Encoding}};
+ {ok,Forms,Extra} ->
+ Encoding = proplists:get_value(encoding, Extra),
+ case find_invalid_unicode(Forms, File) of
+ none ->
+ {ok,St#compile{code=Forms,encoding=Encoding}};
+ {invalid_unicode,_,_}=Ret ->
+ case Encoding of
+ none ->
+ Ret;
+ _ ->
+ {ok,St#compile{code=Forms,encoding=Encoding}}
+ end
+ end;
{error,E} ->
Es = [{St#compile.ifile,[{none,?MODULE,{epp,E}}]}],
{error,St#compile{errors=St#compile.errors ++ Es}}
end.
+find_invalid_unicode([H|T], File0) ->
+ case H of
+ {attribute,_,file,{File,_}} ->
+ find_invalid_unicode(T, File);
+ {error,{Line,file_io_server,invalid_unicode}} ->
+ {invalid_unicode,File0,Line};
+ _Other ->
+ find_invalid_unicode(T, File0)
+ end;
+find_invalid_unicode([], _) -> none.
+
parse_core(St) ->
case file:read_file(St#compile.ifile) of
{ok,Bin} ->
@@ -846,28 +947,35 @@ transform_module(#compile{options=Opt,code=Code0}=St0) ->
foldl_transform(St, [T|Ts]) ->
Name = "transform " ++ atom_to_list(T),
- Fun = fun(S) -> T:parse_transform(S#compile.code, S#compile.options) end,
- Run = case member(time, St#compile.options) of
- true -> fun run_tc/2;
- false -> fun({_Name,F}, S) -> catch F(S) end
- end,
- case Run({Name, Fun}, St) of
- {error,Es,Ws} ->
- {error,St#compile{warnings=St#compile.warnings ++ Ws,
- errors=St#compile.errors ++ Es}};
- {'EXIT',{undef,_}} ->
- Es = [{St#compile.ifile,[{none,compile,
- {undef_parse_transform,T}}]}],
- {error,St#compile{errors=St#compile.errors ++ Es}};
- {'EXIT',R} ->
- Es = [{St#compile.ifile,[{none,compile,{parse_transform,T,R}}]}],
- {error,St#compile{errors=St#compile.errors ++ Es}};
- {warning, Forms, Ws} ->
- foldl_transform(
- St#compile{code=Forms,
- warnings=St#compile.warnings ++ Ws}, Ts);
- Forms ->
- foldl_transform(St#compile{code=Forms}, Ts)
+ case code:ensure_loaded(T) =:= {module,T} andalso
+ erlang:function_exported(T, parse_transform, 2) of
+ true ->
+ Fun = fun(S) ->
+ T:parse_transform(S#compile.code, S#compile.options)
+ end,
+ Run = case member(time, St#compile.options) of
+ true -> fun run_tc/2;
+ false -> fun({_Name,F}, S) -> catch F(S) end
+ end,
+ case Run({Name, Fun}, St) of
+ {error,Es,Ws} ->
+ {error,St#compile{warnings=St#compile.warnings ++ Ws,
+ errors=St#compile.errors ++ Es}};
+ {'EXIT',R} ->
+ Es = [{St#compile.ifile,[{none,compile,
+ {parse_transform,T,R}}]}],
+ {error,St#compile{errors=St#compile.errors ++ Es}};
+ {warning, Forms, Ws} ->
+ foldl_transform(
+ St#compile{code=Forms,
+ warnings=St#compile.warnings ++ Ws}, Ts);
+ Forms ->
+ foldl_transform(St#compile{code=Forms}, Ts)
+ end;
+ false ->
+ Es = [{St#compile.ifile,[{none,compile,
+ {undef_parse_transform,T}}]}],
+ {error,St#compile{errors=St#compile.errors ++ Es}}
end;
foldl_transform(St, []) -> {ok,St}.
@@ -1121,13 +1229,11 @@ expand_module(#compile{code=Code,options=Opts0}=St0) ->
Opts = expand_opts(Opts1),
{ok,St0#compile{module=Mod,options=Opts,code={Mod,Exp,Forms}}}.
-core_module(#compile{code=Code0,options=Opts}=St) ->
- {ok,Code,Ws} = v3_core:module(Code0, Opts),
- {ok,St#compile{code=Code,warnings=St#compile.warnings ++ Ws}}.
-
-core_fold_module(#compile{code=Code0,options=Opts,warnings=Warns}=St) ->
- {ok,Code,Ws} = sys_core_fold:module(Code0, Opts),
- {ok,St#compile{code=Code,warnings=Warns ++ Ws}}.
+core_fold_module_after_inlining(#compile{code=Code0,options=Opts}=St) ->
+ %% Inlining may produce code that generates spurious warnings.
+ %% Ignore all warnings.
+ {ok,Code,_Ws} = sys_core_fold:module(Code0, Opts),
+ {ok,St#compile{code=Code}}.
test_old_inliner(#compile{options=Opts}) ->
%% The point of this test is to avoid loading the old inliner
@@ -1147,6 +1253,9 @@ test_core_inliner(#compile{options=Opts}) ->
end, Opts)
end.
+test_any_inliner(St) ->
+ test_old_inliner(St) orelse test_core_inliner(St).
+
core_old_inliner(#compile{code=Code0,options=Opts}=St) ->
{ok,Code} = sys_core_inline:module(Code0, Opts),
{ok,St#compile{code=Code}}.
@@ -1155,14 +1264,6 @@ core_inline_module(#compile{code=Code0,options=Opts}=St) ->
Code = cerl_inline:core_transform(Code0, Opts),
{ok,St#compile{code=Code}}.
-core_dsetel_module(#compile{code=Code0,options=Opts}=St) ->
- {ok,Code} = sys_core_dsetel:module(Code0, Opts),
- {ok,St#compile{code=Code}}.
-
-kernel_module(#compile{code=Code0,options=Opts}=St) ->
- {ok,Code,Ws} = v3_kernel:module(Code0, Opts),
- {ok,St#compile{code=Code,warnings=St#compile.warnings ++ Ws}}.
-
save_abstract_code(#compile{ifile=File}=St) ->
case abstract_code(St) of
{ok,Code} ->
@@ -1171,7 +1272,8 @@ save_abstract_code(#compile{ifile=File}=St) ->
{error,St#compile{errors=St#compile.errors ++ [{File,Es}]}}
end.
-abstract_code(#compile{code=Code,options=Opts,ofile=OFile}) ->
+abstract_code(#compile{code=Code0,options=Opts,ofile=OFile}) ->
+ Code = erl_parse:anno_to_term(Code0),
Abstr = erlang:term_to_binary({raw_abstract_v1,Code}, [compressed]),
case member(encrypt_debug_info, Opts) of
true ->
@@ -1224,26 +1326,18 @@ generate_key(String) when is_list(String) ->
encrypt({des3_cbc=Type,Key,IVec,BlockSize}, Bin0) ->
Bin1 = case byte_size(Bin0) rem BlockSize of
0 -> Bin0;
- N -> list_to_binary([Bin0,random_bytes(BlockSize-N)])
+ N -> list_to_binary([Bin0,crypto:strong_rand_bytes(BlockSize-N)])
end,
Bin = crypto:block_encrypt(Type, Key, IVec, Bin1),
TypeString = atom_to_list(Type),
list_to_binary([0,length(TypeString),TypeString,Bin]).
-random_bytes(N) ->
- {A,B,C} = now(),
- _ = random:seed(A, B, C),
- random_bytes_1(N, []).
-
-random_bytes_1(0, Acc) -> Acc;
-random_bytes_1(N, Acc) -> random_bytes_1(N-1, [random:uniform(255)|Acc]).
-
save_core_code(St) ->
{ok,St#compile{core_code=cerl:from_records(St#compile.code)}}.
beam_asm(#compile{ifile=File,code=Code0,
abstract_code=Abst,mod_options=Opts0}=St) ->
- Source = filename:absname(File),
+ Source = paranoid_absname(File),
Opts1 = lists:map(fun({debug_info_key,_}) -> {debug_info_key,'********'};
(Other) -> Other
end, Opts0),
@@ -1252,6 +1346,16 @@ beam_asm(#compile{ifile=File,code=Code0,
{ok,Code} -> {ok,St#compile{code=Code,abstract_code=[]}}
end.
+paranoid_absname(""=File) ->
+ File;
+paranoid_absname(File) ->
+ case file:get_cwd() of
+ {ok,Cwd} ->
+ filename:absname(File, Cwd);
+ _ ->
+ File
+ end.
+
test_native(#compile{options=Opts}) ->
%% This test is done late, in case some other option has turned off native.
%% 'native' given on the command line can be overridden by
@@ -1290,10 +1394,10 @@ native_compile_1(St) ->
{error,R} ->
case IgnoreErrors of
true ->
- Ws = [{St#compile.ifile,[{?MODULE,{native,R}}]}],
+ Ws = [{St#compile.ifile,[{none,?MODULE,{native,R}}]}],
{ok,St#compile{warnings=St#compile.warnings ++ Ws}};
false ->
- Es = [{St#compile.ifile,[{?MODULE,{native,R}}]}],
+ Es = [{St#compile.ifile,[{none,?MODULE,{native,R}}]}],
{error,St#compile{errors=St#compile.errors ++ Es}}
end
catch
@@ -1302,7 +1406,7 @@ native_compile_1(St) ->
case IgnoreErrors of
true ->
Ws = [{St#compile.ifile,
- [{?MODULE,{native_crash,R,Stk}}]}],
+ [{none,?MODULE,{native_crash,R,Stk}}]}],
{ok,St#compile{warnings=St#compile.warnings ++ Ws}};
false ->
erlang:raise(Class, R, Stk)
@@ -1349,7 +1453,7 @@ save_binary(#compile{module=Mod,ofile=Outfile,
save_binary_1(St);
_ ->
Es = [{St#compile.ofile,
- [{?MODULE,{module_name,Mod,Base}}]}],
+ [{none,?MODULE,{module_name,Mod,Base}}]}],
{error,St#compile{errors=St#compile.errors ++ Es}}
end
end.
@@ -1363,20 +1467,20 @@ save_binary_1(St) ->
ok ->
{ok,St};
{error,RenameError} ->
- Es0 = [{Ofile,[{?MODULE,{rename,Tfile,Ofile,
- RenameError}}]}],
+ Es0 = [{Ofile,[{none,?MODULE,{rename,Tfile,Ofile,
+ RenameError}}]}],
Es = case file:delete(Tfile) of
ok -> Es0;
{error,DeleteError} ->
Es0 ++
[{Ofile,
- [{?MODULE,{delete_temp,Tfile,
- DeleteError}}]}]
+ [{none,?MODULE,{delete_temp,Tfile,
+ DeleteError}}]}]
end,
{error,St#compile{errors=St#compile.errors ++ Es}}
end;
{error,_Error} ->
- Es = [{Tfile,[{compile,write_error}]}],
+ Es = [{Tfile,[{none,compile,write_error}]}],
{error,St#compile{errors=St#compile.errors ++ Es}}
end.
@@ -1419,6 +1523,9 @@ report_warnings(#compile{options=Opts,warnings=Ws0}) ->
false -> ok
end.
+format_message(F, P, [{none,Mod,E}|Es]) ->
+ M = {none,io_lib:format("~ts: ~s~ts\n", [F,P,Mod:format_error(E)])},
+ [M|format_message(F, P, Es)];
format_message(F, P, [{{Line,Column}=Loc,Mod,E}|Es]) ->
M = {{F,Loc},io_lib:format("~ts:~w:~w ~s~ts\n",
[F,Line,Column,P,Mod:format_error(E)])},
@@ -1428,12 +1535,17 @@ format_message(F, P, [{Line,Mod,E}|Es]) ->
[F,Line,P,Mod:format_error(E)])},
[M|format_message(F, P, Es)];
format_message(F, P, [{Mod,E}|Es]) ->
+ %% Not documented and not expected to be used any more, but
+ %% keep a while just in case.
M = {none,io_lib:format("~ts: ~s~ts\n", [F,P,Mod:format_error(E)])},
[M|format_message(F, P, Es)];
format_message(_, _, []) -> [].
%% list_errors(File, ErrorDescriptors) -> ok
+list_errors(F, [{none,Mod,E}|Es]) ->
+ io:fwrite("~ts: ~ts\n", [F,Mod:format_error(E)]),
+ list_errors(F, Es);
list_errors(F, [{{Line,Column},Mod,E}|Es]) ->
io:fwrite("~ts:~w:~w: ~ts\n", [F,Line,Column,Mod:format_error(E)]),
list_errors(F, Es);
@@ -1441,6 +1553,8 @@ list_errors(F, [{Line,Mod,E}|Es]) ->
io:fwrite("~ts:~w: ~ts\n", [F,Line,Mod:format_error(E)]),
list_errors(F, Es);
list_errors(F, [{Mod,E}|Es]) ->
+ %% Not documented and not expected to be used any more, but
+ %% keep a while just in case.
io:fwrite("~ts: ~ts\n", [F,Mod:format_error(E)]),
list_errors(F, Es);
list_errors(_F, []) -> ok.
@@ -1525,11 +1639,8 @@ output_encoding(F, #compile{encoding = Encoding}) ->
ok = io:setopts(F, [{encoding, Encoding}]),
ok = io:fwrite(F, <<"%% ~s\n">>, [epp:encoding_to_string(Encoding)]).
-restore_expanded_types("P", Fs) ->
- epp:restore_typed_record_fields(Fs);
restore_expanded_types("E", {M,I,Fs0}) ->
- Fs1 = restore_expand_module(Fs0),
- Fs = epp:restore_typed_record_fields(Fs1),
+ Fs = restore_expand_module(Fs0),
{M,I,Fs};
restore_expanded_types(_Ext, Code) -> Code.
@@ -1541,11 +1652,13 @@ restore_expand_module([{attribute,Line,spec,[Arg]}|Fs]) ->
[{attribute,Line,spec,Arg}|restore_expand_module(Fs)];
restore_expand_module([{attribute,Line,callback,[Arg]}|Fs]) ->
[{attribute,Line,callback,Arg}|restore_expand_module(Fs)];
+restore_expand_module([{attribute,Line,record,[R]}|Fs]) ->
+ [{attribute,Line,record,R}|restore_expand_module(Fs)];
restore_expand_module([F|Fs]) ->
[F|restore_expand_module(Fs)];
restore_expand_module([]) -> [].
-
+
-spec options() -> 'ok'.
options() ->
@@ -1582,11 +1695,12 @@ help([_|T]) ->
help(_) ->
ok.
-
+
%% compile(AbsFileName, Outfilename, Options)
%% Compile entry point for erl_compile.
compile(File0, _OutFile, Options) ->
+ pre_load(),
File = shorten_filename(File0),
case file(File, make_erl_options(Options)) of
{ok,_Mod} -> ok;
@@ -1602,7 +1716,7 @@ compile_beam(File0, _OutFile, Opts) ->
compile_asm(File0, _OutFile, Opts) ->
File = shorten_filename(File0),
- case file(File, [asm|make_erl_options(Opts)]) of
+ case file(File, [from_asm|make_erl_options(Opts)]) of
{ok,_Mod} -> ok;
Other -> Other
end.
@@ -1651,3 +1765,47 @@ make_erl_options(Opts) ->
end,
Options ++ [report_errors, {cwd, Cwd}, {outdir, Outdir}|
[{i, Dir} || Dir <- Includes]] ++ Specific.
+
+pre_load() ->
+ L = [beam_a,
+ beam_asm,
+ beam_block,
+ beam_bool,
+ beam_bs,
+ beam_bsm,
+ beam_clean,
+ beam_dead,
+ beam_dict,
+ beam_except,
+ beam_flatten,
+ beam_jump,
+ beam_opcodes,
+ beam_peep,
+ beam_receive,
+ beam_reorder,
+ beam_split,
+ beam_trim,
+ beam_type,
+ beam_utils,
+ beam_validator,
+ beam_z,
+ cerl,
+ cerl_clauses,
+ cerl_sets,
+ cerl_trees,
+ core_lib,
+ epp,
+ erl_bifs,
+ erl_expand_records,
+ erl_lint,
+ erl_parse,
+ erl_scan,
+ sys_core_dsetel,
+ sys_core_fold,
+ sys_pre_expand,
+ v3_codegen,
+ v3_core,
+ v3_kernel,
+ v3_life],
+ _ = code:ensure_modules_loaded(L),
+ ok.
diff --git a/lib/compiler/src/compiler.app.src b/lib/compiler/src/compiler.app.src
index 8775c84698..1fd7800e85 100644
--- a/lib/compiler/src/compiler.app.src
+++ b/lib/compiler/src/compiler.app.src
@@ -1,18 +1,19 @@
% This is an -*- erlang -*- file.
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1997-2013. All Rights Reserved.
+%% Copyright Ericsson AB 1997-2016. All Rights Reserved.
%%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
%%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
%%
%% %CopyrightEnd%
@@ -24,6 +25,7 @@
beam_asm,
beam_block,
beam_bool,
+ beam_bs,
beam_bsm,
beam_clean,
beam_dead,
@@ -36,6 +38,7 @@
beam_opcodes,
beam_peep,
beam_receive,
+ beam_reorder,
beam_split,
beam_trim,
beam_type,
@@ -45,6 +48,7 @@
cerl,
cerl_clauses,
cerl_inline,
+ cerl_sets,
cerl_trees,
compile,
core_scan,
@@ -56,6 +60,7 @@
rec_env,
sys_core_dsetel,
sys_core_fold,
+ sys_core_fold_lists,
sys_core_inline,
sys_pre_attributes,
sys_pre_expand,
@@ -67,4 +72,6 @@
]},
{registered, []},
{applications, [kernel, stdlib]},
- {env, []}]}.
+ {env, []},
+ {runtime_dependencies, ["stdlib-2.5","kernel-4.0","hipe-3.12","erts-7.0",
+ "crypto-3.6"]}]}.
diff --git a/lib/compiler/src/compiler.appup.src b/lib/compiler/src/compiler.appup.src
index 54a63833e6..e9db37e203 100644
--- a/lib/compiler/src/compiler.appup.src
+++ b/lib/compiler/src/compiler.appup.src
@@ -1 +1,22 @@
-{"%VSN%",[],[]}.
+%% -*- erlang -*-
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2014-2016. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+{"%VSN%",
+ [{<<".*">>,[{restart_application, compiler}]}],
+ [{<<".*">>,[{restart_application, compiler}]}]
+}.
diff --git a/lib/compiler/src/core_lib.erl b/lib/compiler/src/core_lib.erl
index 824be9ff7f..c1806272bd 100644
--- a/lib/compiler/src/core_lib.erl
+++ b/lib/compiler/src/core_lib.erl
@@ -1,18 +1,19 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2000-2009. All Rights Reserved.
+%% Copyright Ericsson AB 2000-2016. All Rights Reserved.
%%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
%%
%% %CopyrightEnd%
%%
@@ -20,71 +21,16 @@
-module(core_lib).
--export([get_anno/1,set_anno/2]).
--export([is_literal/1,is_literal_list/1]).
--export([literal_value/1]).
-export([make_values/1]).
-export([is_var_used/2]).
-include("core_parse.hrl").
-%%
-%% Generic get/set annotation that should be used only with cerl() structures.
-%%
--spec get_anno(cerl:cerl()) -> term().
-
-get_anno(C) -> element(2, C).
-
--spec set_anno(cerl:cerl(), term()) -> cerl:cerl().
-
-set_anno(C, A) -> setelement(2, C, A).
-
--spec is_literal(cerl:cerl()) -> boolean().
-
-is_literal(#c_literal{}) -> true;
-is_literal(#c_cons{hd=H,tl=T}) ->
- is_literal(H) andalso is_literal(T);
-is_literal(#c_tuple{es=Es}) -> is_literal_list(Es);
-is_literal(#c_binary{segments=Es}) -> is_lit_bin(Es);
-is_literal(_) -> false.
-
--spec is_literal_list([cerl:cerl()]) -> boolean().
-
-is_literal_list(Es) -> lists:all(fun is_literal/1, Es).
-
-is_lit_bin(Es) ->
- lists:all(fun (#c_bitstr{val=E,size=S}) ->
- is_literal(E) andalso is_literal(S)
- end, Es).
-
-%% Return the value of LitExpr.
--spec literal_value(cerl:c_literal() | cerl:c_binary() |
- cerl:c_cons() | cerl:c_tuple()) -> term().
-
-literal_value(#c_literal{val=V}) -> V;
-literal_value(#c_binary{segments=Es}) ->
- list_to_binary([literal_value_bin(Bit) || Bit <- Es]);
-literal_value(#c_cons{hd=H,tl=T}) ->
- [literal_value(H)|literal_value(T)];
-literal_value(#c_tuple{es=Es}) ->
- list_to_tuple(literal_value_list(Es)).
-
-literal_value_list(Vals) -> [literal_value(V) || V <- Vals].
-
-literal_value_bin(#c_bitstr{val=Val,size=Sz,unit=U,type=T,flags=Fs}) ->
- %% We will only handle literals constructed by make_literal/1.
- %% Could be made more general in the future if the need arises.
- 8 = literal_value(Sz),
- 1 = literal_value(U),
- integer = literal_value(T),
- [unsigned,big] = literal_value(Fs),
- literal_value(Val).
-
%% Make a suitable values structure, expr or values, depending on Expr.
-spec make_values([cerl:cerl()] | cerl:cerl()) -> cerl:cerl().
make_values([E]) -> E;
-make_values([H|_]=Es) -> #c_values{anno=get_anno(H),es=Es};
+make_values([H|_]=Es) -> #c_values{anno=cerl:get_ann(H),es=Es};
make_values([]) -> #c_values{es=[]};
make_values(E) -> E.
@@ -105,6 +51,10 @@ vu_expr(V, #c_cons{hd=H,tl=T}) ->
vu_expr(V, H) orelse vu_expr(V, T);
vu_expr(V, #c_tuple{es=Es}) ->
vu_expr_list(V, Es);
+vu_expr(V, #c_map{arg=M,es=Es}) ->
+ vu_expr(V, M) orelse vu_expr_list(V, Es);
+vu_expr(V, #c_map_pair{key=Key,val=Val}) ->
+ vu_expr_list(V, [Key,Val]);
vu_expr(V, #c_binary{segments=Ss}) ->
vu_seg_list(V, Ss);
vu_expr(V, #c_fun{vars=Vs,body=B}) ->
@@ -201,6 +151,8 @@ vu_pattern(V, #c_tuple{es=Es}, St) ->
vu_pattern_list(V, Es, St);
vu_pattern(V, #c_binary{segments=Ss}, St) ->
vu_pat_seg_list(V, Ss, St);
+vu_pattern(V, #c_map{es=Es}, St) ->
+ vu_map_pairs(V, Es, St);
vu_pattern(V, #c_alias{var=Var,pat=P}, St0) ->
case vu_pattern(V, Var, St0) of
{true,_}=St1 -> St1;
@@ -223,6 +175,18 @@ vu_pat_seg_list(V, Ss, St) ->
end
end, St, Ss).
+vu_map_pairs(V, [#c_map_pair{key=Key,val=Pat}|T], St0) ->
+ case vu_expr(V, Key) of
+ true ->
+ {true,false};
+ false ->
+ case vu_pattern(V, Pat, St0) of
+ {true,_}=St -> St;
+ St -> vu_map_pairs(V, T, St)
+ end
+ end;
+vu_map_pairs(_, [], St) -> St.
+
-spec vu_var_list(cerl:var_name(), [cerl:c_var()]) -> boolean().
vu_var_list(V, Vs) ->
diff --git a/lib/compiler/src/core_lint.erl b/lib/compiler/src/core_lint.erl
index 1e8983f594..7d3513c0ba 100644
--- a/lib/compiler/src/core_lint.erl
+++ b/lib/compiler/src/core_lint.erl
@@ -1,18 +1,19 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1999-2013. All Rights Reserved.
+%% Copyright Ericsson AB 1999-2015. All Rights Reserved.
%%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
%%
%% %CopyrightEnd%
%%
@@ -33,9 +34,6 @@
%% Values only as multiple values/variables/patterns.
%% Return same number of values as requested
%% Correct number of arguments
-%%
-%% Checks to add:
-%%
%% Consistency of values/variables
%% Consistency of function return values/calls.
%%
@@ -68,14 +66,14 @@
| {'undefined_function', fa(), fa()}
| {'tail_segment_not_at_end', fa()}.
--type error() :: {module(), err_desc()}.
+-type error() :: {'none', module(), err_desc()}.
-type warning() :: {module(), term()}.
%%-----------------------------------------------------------------------
%% Define the lint state record.
-record(lint, {module :: module(), % Current module
- func :: fa(), % Current function
+ func :: fa() | 'undefined', % Current function
errors = [] :: [error()], % Errors
warnings= [] :: [warning()]}). % Warnings
@@ -162,7 +160,7 @@ return_status(St) ->
%% add_warning(ErrorDescriptor, State) -> State'
%% Note that we don't use line numbers here.
-add_error(E, St) -> St#lint{errors=[{?MODULE,E}|St#lint.errors]}.
+add_error(E, St) -> St#lint{errors=[{none,?MODULE,E}|St#lint.errors]}.
%%add_warning(W, St) -> St#lint{warnings=[{none,core_lint,W}|St#lint.warnings]}.
@@ -176,7 +174,7 @@ check_exports(Es, St) ->
end.
check_attrs(As, St) ->
- case all(fun ({#c_literal{},V}) -> core_lib:is_literal(V);
+ case all(fun ({#c_literal{},#c_literal{}}) -> true;
(_) -> false
end, As) of
true -> St;
@@ -211,7 +209,7 @@ functions(Fs, Def, St0) ->
function({#c_var{name={_,_}},B}, Def, St) ->
%% Body must be a fun!
case B of
- #c_fun{} -> expr(B, Def, any, St);
+ #c_fun{} -> expr(B, Def, 1, St);
_ -> add_error({illegal_expr,St#lint.func}, St)
end.
@@ -247,26 +245,43 @@ gbody(E, Def, Rt, St0) ->
false -> St1
end.
-gexpr(#c_var{name=N}, Def, _Rt, St) when is_atom(N); is_integer(N) ->
- expr_var(N, Def, St);
-gexpr(#c_literal{}, _Def, _Rt, St) -> St;
-gexpr(#c_cons{hd=H,tl=T}, Def, _Rt, St) ->
- gexpr_list([H,T], Def, St);
-gexpr(#c_tuple{es=Es}, Def, _Rt, St) ->
- gexpr_list(Es, Def, St);
-gexpr(#c_binary{segments=Ss}, Def, _Rt, St) ->
- gbitstr_list(Ss, Def, St);
+gexpr(#c_var{name=N}, Def, Rt, St) when is_atom(N); is_integer(N) ->
+ return_match(Rt, 1, expr_var(N, Def, St));
+gexpr(#c_literal{}, _Def, Rt, St) ->
+ return_match(Rt, 1, St);
+gexpr(#c_cons{hd=H,tl=T}, Def, Rt, St) ->
+ return_match(Rt, 1, gexpr_list([H,T], Def, St));
+gexpr(#c_tuple{es=Es}, Def, Rt, St) ->
+ return_match(Rt, 1, gexpr_list(Es, Def, St));
+gexpr(#c_map{es=Es}, Def, Rt, St) ->
+ return_match(Rt, 1, gexpr_list(Es, Def, St));
+gexpr(#c_map_pair{key=K,val=V}, Def, Rt, St) ->
+ return_match(Rt, 1, gexpr_list([K,V], Def, St));
+gexpr(#c_binary{segments=Ss}, Def, Rt, St) ->
+ return_match(Rt, 1, gbitstr_list(Ss, Def, St));
gexpr(#c_seq{arg=Arg,body=B}, Def, Rt, St0) ->
- St1 = gexpr(Arg, Def, any, St0), %Ignore values
- gbody(B, Def, Rt, St1);
+ St1 = gexpr(Arg, Def, 1, St0),
+ return_match(Rt, 1, gbody(B, Def, Rt, St1));
gexpr(#c_let{vars=Vs,arg=Arg,body=B}, Def, Rt, St0) ->
St1 = gbody(Arg, Def, let_varcount(Vs), St0), %This is a guard body
{Lvs,St2} = variable_list(Vs, St1),
gbody(B, union(Lvs, Def), Rt, St2);
-gexpr(#c_call{module=#c_literal{val=erlang},
- name=#c_literal{},
- args=As}, Def, 1, St) ->
- gexpr_list(As, Def, St);
+gexpr(#c_call{module=#c_literal{val=erlang},name=#c_literal{val=is_record},
+ args=[Arg,#c_literal{val=Tag},#c_literal{val=Size}]},
+ Def, Rt, St) when is_atom(Tag), is_integer(Size) ->
+ return_match(Rt, 1, gexpr(Arg, Def, 1, St));
+gexpr(#c_call{module=#c_literal{val=erlang},name=#c_literal{val=is_record}},
+ _Def, Rt, St) ->
+ return_match(Rt, 1, add_error({illegal_guard,St#lint.func}, St));
+gexpr(#c_call{module=#c_literal{val=erlang},name=#c_literal{val=Name},args=As},
+ Def, Rt, St0) when is_atom(Name) ->
+ St1 = return_match(Rt, 1, St0),
+ case is_guard_bif(Name, length(As)) of
+ true ->
+ gexpr_list(As, Def, St1);
+ false ->
+ add_error({illegal_guard,St1#lint.func}, St1)
+ end;
gexpr(#c_primop{name=#c_literal{val=A},args=As}, Def, _Rt, St0) when is_atom(A) ->
gexpr_list(As, Def, St0);
gexpr(#c_try{arg=E,vars=[#c_var{name=X}],body=#c_var{name=X},
@@ -278,6 +293,7 @@ gexpr(#c_case{arg=Arg,clauses=Cs}, Def, Rt, St0) ->
St1 = gbody(Arg, Def, PatCount, St0),
clauses(Cs, Def, PatCount, Rt, St1);
gexpr(_Core, _, _, St) ->
+ %%io:fwrite("clint gexpr: ~p~n", [_Core]),
add_error({illegal_guard,St#lint.func}, St).
%% gexpr_list([Expr], Defined, State) -> State.
@@ -293,21 +309,35 @@ gbitstr_list(Es, Def, St0) ->
gbitstr(#c_bitstr{val=V,size=S}, Def, St) ->
gexpr_list([V,S], Def, St).
+%% is_guard_bif(Name, Arity) -> Boolean.
+
+is_guard_bif(Name, Arity) ->
+ erl_internal:guard_bif(Name, Arity)
+ orelse erl_internal:arith_op(Name, Arity)
+ orelse erl_internal:bool_op(Name, Arity)
+ orelse erl_internal:comp_op(Name, Arity).
+
%% expr(Expr, Defined, RetCount, State) -> State.
-expr(#c_var{name={_,_}=FA}, Def, _Rt, St) ->
- expr_fname(FA, Def, St);
-expr(#c_var{name=N}, Def, _Rt, St) -> expr_var(N, Def, St);
-expr(#c_literal{}, _Def, _Rt, St) -> St;
-expr(#c_cons{hd=H,tl=T}, Def, _Rt, St) ->
- expr_list([H,T], Def, St);
-expr(#c_tuple{es=Es}, Def, _Rt, St) ->
- expr_list(Es, Def, St);
-expr(#c_binary{segments=Ss}, Def, _Rt, St) ->
- bitstr_list(Ss, Def, St);
+expr(#c_var{name={_,_}=FA}, Def, Rt, St) ->
+ return_match(Rt, 1, expr_fname(FA, Def, St));
+expr(#c_var{name=N}, Def, Rt, St) ->
+ return_match(Rt, 1, expr_var(N, Def, St));
+expr(#c_literal{}, _Def, Rt, St) ->
+ return_match(Rt, 1, St);
+expr(#c_cons{hd=H,tl=T}, Def, Rt, St) ->
+ return_match(Rt, 1, expr_list([H,T], Def, St));
+expr(#c_tuple{es=Es}, Def, Rt, St) ->
+ return_match(Rt, 1, expr_list(Es, Def, St));
+expr(#c_map{es=Es}, Def, Rt, St) ->
+ return_match(Rt, 1, expr_list(Es, Def, St));
+expr(#c_map_pair{key=K,val=V}, Def, Rt, St) ->
+ return_match(Rt, 1, expr_list([K,V], Def, St));
+expr(#c_binary{segments=Ss}, Def, Rt, St) ->
+ return_match(Rt, 1, bitstr_list(Ss, Def, St));
expr(#c_fun{vars=Vs,body=B}, Def, Rt, St0) ->
{Vvs,St1} = variable_list(Vs, St0),
- return_match(Rt, 1, body(B, union(Vvs, Def), any, St1));
+ return_match(Rt, 1, body(B, union(Vvs, Def), 1, St1));
expr(#c_seq{arg=Arg,body=B}, Def, Rt, St0) ->
St1 = expr(Arg, Def, 1, St0),
body(B, Def, Rt, St1);
@@ -333,15 +363,26 @@ expr(#c_receive{clauses=Cs,timeout=T,action=A}, Def, Rt, St0) ->
St1 = expr(T, Def, 1, St0),
St2 = body(A, Def, Rt, St1),
clauses(Cs, Def, 1, Rt, St2);
-expr(#c_apply{op=Op,args=As}, Def, _Rt, St0) ->
+expr(#c_apply{op=Op,args=As}, Def, Rt, St0) ->
St1 = apply_op(Op, Def, length(As), St0),
- expr_list(As, Def, St1);
+ return_match(Rt, 1, expr_list(As, Def, St1));
+expr(#c_call{module=#c_literal{val=erlang},name=#c_literal{val=Name},args=As},
+ Def, Rt, St0) when is_atom(Name) ->
+ St1 = expr_list(As, Def, St0),
+ case erl_bifs:is_exit_bif(erlang, Name, length(As)) of
+ true -> St1;
+ false -> return_match(Rt, 1, St1)
+ end;
expr(#c_call{module=M,name=N,args=As}, Def, _Rt, St0) ->
St1 = expr(M, Def, 1, St0),
St2 = expr(N, Def, 1, St1),
expr_list(As, Def, St2);
-expr(#c_primop{name=#c_literal{val=A},args=As}, Def, _Rt, St0) when is_atom(A) ->
- expr_list(As, Def, St0);
+expr(#c_primop{name=#c_literal{val=A},args=As}, Def, Rt, St0) when is_atom(A) ->
+ St1 = expr_list(As, Def, St0),
+ case A of
+ match_fail -> St1;
+ _ -> return_match(Rt, 1, St1)
+ end;
expr(#c_catch{body=B}, Def, Rt, St) ->
return_match(Rt, 1, body(B, Def, 1, St));
expr(#c_try{arg=A,vars=Vs,body=B,evars=Evs,handler=H}, Def, Rt, St0) ->
@@ -355,7 +396,7 @@ expr(#c_try{arg=A,vars=Vs,body=B,evars=Evs,handler=H}, Def, Rt, St0) ->
{Ens,St5} = variable_list(Evs, St4),
body(H, union(Ens, Def), Rt, St5);
expr(_Other, _, _, St) ->
- %%io:fwrite("clint: ~p~n", [_Other]),
+ %%io:fwrite("clint expr: ~p~n", [_Other]),
add_error({illegal_expr,St#lint.func}, St).
%% expr_list([Expr], Defined, State) -> State.
@@ -454,13 +495,19 @@ pattern(#c_cons{hd=H,tl=T}, Def, Ps, St) ->
pattern_list([H,T], Def, Ps, St);
pattern(#c_tuple{es=Es}, Def, Ps, St) ->
pattern_list(Es, Def, Ps, St);
+pattern(#c_map{es=Es}, Def, Ps, St) ->
+ pattern_list(Es, Def, Ps, St);
+pattern(#c_map_pair{op=#c_literal{val=exact},key=K,val=V},Def,Ps,St) ->
+ pattern_list([K,V],Def,Ps,St);
pattern(#c_binary{segments=Ss}, Def, Ps, St0) ->
St = pat_bin_tail_check(Ss, St0),
pat_bin(Ss, Def, Ps, St);
pattern(#c_alias{var=V,pat=P}, Def, Ps, St0) ->
{Vvs,St1} = variable(V, Ps, St0),
pattern(P, Def, union(Vvs, Ps), St1);
-pattern(_, _, Ps, St) -> {Ps,add_error({not_pattern,St#lint.func}, St)}.
+pattern(_Other, _, Ps, St) ->
+ %%io:fwrite("clint pattern: ~p~n", [_Other]),
+ {Ps,add_error({not_pattern,St#lint.func}, St)}.
pat_var(N, _Def, Ps, St) ->
case is_element(N, Ps) of
diff --git a/lib/compiler/src/core_parse.hrl b/lib/compiler/src/core_parse.hrl
index 0b8f4d8895..83a6f0179c 100644
--- a/lib/compiler/src/core_parse.hrl
+++ b/lib/compiler/src/core_parse.hrl
@@ -1,18 +1,19 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1999-2009. All Rights Reserved.
+%% Copyright Ericsson AB 1999-2016. All Rights Reserved.
%%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
%%
%% %CopyrightEnd%
%%
@@ -34,7 +35,7 @@
-record(c_apply, {anno=[], op, % op :: Tree,
args}). % args :: [Tree]
--record(c_binary, {anno=[], segments}). % segments :: [#c_bitstr{}]
+-record(c_binary, {anno=[], segments :: [cerl:c_bitstr()]}).
-record(c_bitstr, {anno=[], val, % val :: Tree,
size, % size :: Tree,
@@ -70,6 +71,16 @@
-record(c_literal, {anno=[], val}). % val :: literal()
+-record(c_map, {anno=[],
+ arg=#c_literal{val=#{}} :: cerl:c_var() | cerl:c_literal(),
+ es :: [cerl:c_map_pair()],
+ is_pat=false :: boolean()}).
+
+-record(c_map_pair, {anno=[],
+ op :: #c_literal{val::'assoc'} | #c_literal{val::'exact'},
+ key,
+ val}).
+
-record(c_module, {anno=[], name, % name :: Tree,
exports, % exports :: [Tree],
attrs, % attrs :: [#c_def{}],
diff --git a/lib/compiler/src/core_parse.yrl b/lib/compiler/src/core_parse.yrl
index 4e98a8c2da..8028aa99bb 100644
--- a/lib/compiler/src/core_parse.yrl
+++ b/lib/compiler/src/core_parse.yrl
@@ -1,18 +1,19 @@
%% -*-Erlang-*-
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1999-2009. All Rights Reserved.
+%% Copyright Ericsson AB 1999-2016. All Rights Reserved.
%%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
%%
%% %CopyrightEnd%
%%
@@ -21,6 +22,8 @@
%% Have explicit productions for annotated phrases named anno_XXX.
%% This just does an XXX and adds the annotation.
+Expect 0.
+
Nonterminals
module_definition module_export module_attribute module_defs
@@ -44,9 +47,14 @@ receive_expr timeout try_expr
sequence catch_expr
variable clause clause_pattern
-annotation anno_fun anno_expression anno_expressions
+map_expr anno_map_expr map_pairs anno_map_pair map_pair map_pair_assoc map_pair_exact
+map_pattern map_pair_patterns map_pair_pattern
+
+annotation anno_atom anno_fun anno_expression anno_expressions
anno_variable anno_variables anno_pattern anno_patterns
anno_function_name
+anno_literal
+anno_segment anno_segment_pattern
anno_clause anno_clauses.
Terminals
@@ -54,6 +62,7 @@ Terminals
%% Separators
'(' ')' '{' '}' '[' ']' '|' ',' '->' '=' '/' '<' '>' ':' '-|' '#'
+'~' '=>' ':='
%% Keywords (atoms are assumed to always be single-quoted).
@@ -83,7 +92,7 @@ module_definition ->
module_definition ->
'(' 'module' atom module_export module_attribute module_defs 'end'
'-|' annotation ')' :
- #c_module{anno='$9',name=tok_val('$3'),exports='$4',
+ #c_module{anno='$9',name=#c_literal{val=tok_val('$3')},exports='$4',
attrs='$5',defs='$6'}.
module_export -> '[' ']' : [].
@@ -92,7 +101,7 @@ module_export -> '[' exported_names ']' : '$2'.
exported_names -> exported_name ',' exported_names : ['$1' | '$3'].
exported_names -> exported_name : ['$1'].
-exported_name -> function_name : '$1'.
+exported_name -> anno_function_name : '$1'.
module_attribute -> 'attributes' '[' ']' : [].
module_attribute -> 'attributes' '[' attribute_list ']' : '$3'.
@@ -100,8 +109,16 @@ module_attribute -> 'attributes' '[' attribute_list ']' : '$3'.
attribute_list -> attribute ',' attribute_list : ['$1' | '$3'].
attribute_list -> attribute : ['$1'].
-attribute -> atom '=' literal :
- {#c_literal{val=tok_val('$1')},'$3'}.
+attribute -> anno_atom '=' anno_literal :
+ {'$1','$3'}.
+
+anno_atom -> atom :
+ cerl:c_atom(tok_val('$1')).
+anno_atom -> '(' atom '-|' annotation ')' :
+ cerl:ann_c_atom('$4', tok_val('$2')).
+
+anno_literal -> literal : '$1'.
+anno_literal -> '(' literal '-|' annotation ')' : cerl:set_ann('$2', '$4').
module_defs -> function_definitions : '$1'.
@@ -118,7 +135,7 @@ function_definition ->
{'$1','$3'}.
anno_fun -> '(' fun_expr '-|' annotation ')' :
- core_lib:set_anno('$2', '$4').
+ cerl:set_ann('$2', '$4').
anno_fun -> fun_expr : '$1'.
%% Constant terms for annotations and attributes.
@@ -157,7 +174,7 @@ tail_constant -> ',' constant tail_constant : ['$2'|'$3'].
%% ( ( V -| <anno> ) = ( {a} -| <anno> ) -| <anno> )
anno_pattern -> '(' other_pattern '-|' annotation ')' :
- core_lib:set_anno('$2', '$4').
+ cerl:set_ann('$2', '$4').
anno_pattern -> other_pattern : '$1'.
anno_pattern -> anno_variable : '$1'.
@@ -166,6 +183,7 @@ anno_patterns -> anno_pattern : ['$1'].
other_pattern -> atomic_pattern : '$1'.
other_pattern -> tuple_pattern : '$1'.
+other_pattern -> map_pattern : '$1'.
other_pattern -> cons_pattern : '$1'.
other_pattern -> binary_pattern : '$1'.
other_pattern -> anno_variable '=' anno_pattern :
@@ -176,21 +194,41 @@ atomic_pattern -> atomic_literal : '$1'.
tuple_pattern -> '{' '}' : c_tuple([]).
tuple_pattern -> '{' anno_patterns '}' : c_tuple('$2').
+map_pattern -> '~' '{' '}' '~' : c_map_pattern([]).
+map_pattern -> '~' '{' map_pair_patterns '}' '~' :
+ c_map_pattern('$3').
+map_pattern -> '~' '{' map_pair_patterns '|' anno_map_expr '}' '~' :
+ ann_c_map_pattern('$5', '$3').
+
+map_pair_patterns -> map_pair_pattern : ['$1'].
+map_pair_patterns -> map_pair_pattern ',' map_pair_patterns : ['$1' | '$3'].
+
+map_pair_pattern -> anno_expression ':=' anno_pattern :
+ #c_map_pair{op=#c_literal{val=exact},
+ key='$1',val='$3'}.
+map_pair_pattern -> '(' anno_expression ':=' anno_pattern '-|' annotation ')' :
+ #c_map_pair{anno='$6',op=#c_literal{val=exact},
+ key='$2',val='$4'}.
+
cons_pattern -> '[' anno_pattern tail_pattern :
- #c_cons{hd='$2',tl='$3'}.
+ c_cons('$2', '$3').
tail_pattern -> ']' : #c_literal{val=[]}.
tail_pattern -> '|' anno_pattern ']' : '$2'.
tail_pattern -> ',' anno_pattern tail_pattern :
- #c_cons{hd='$2',tl='$3'}.
+ c_cons('$2', '$3').
binary_pattern -> '#' '{' '}' '#' : #c_binary{segments=[]}.
binary_pattern -> '#' '{' segment_patterns '}' '#' : #c_binary{segments='$3'}.
-segment_patterns -> segment_pattern ',' segment_patterns : ['$1' | '$3'].
-segment_patterns -> segment_pattern : ['$1'].
+segment_patterns -> anno_segment_pattern ',' segment_patterns : ['$1' | '$3'].
+segment_patterns -> anno_segment_pattern : ['$1'].
-segment_pattern -> '#' '<' anno_pattern '>' '(' anno_patterns ')':
+anno_segment_pattern -> segment_pattern : '$1'.
+anno_segment_pattern -> '(' segment_pattern '-|' annotation ')' :
+ cerl:set_ann('$2', '$4').
+
+segment_pattern -> '#' '<' anno_pattern '>' '(' anno_expressions ')':
case '$6' of
[S,U,T,Fs] ->
#c_bitstr{val='$3',size=S,unit=U,type=T,flags=Fs};
@@ -206,7 +244,7 @@ anno_variables -> anno_variable : ['$1'].
anno_variable -> variable : '$1'.
anno_variable -> '(' variable '-|' annotation ')' :
- core_lib:set_anno('$2', '$4').
+ cerl:set_ann('$2', '$4').
%% Expressions
%% Must split expressions into two levels as nested value expressions
@@ -214,7 +252,7 @@ anno_variable -> '(' variable '-|' annotation ')' :
anno_expression -> expression : '$1'.
anno_expression -> '(' expression '-|' annotation ')' :
- core_lib:set_anno('$2', '$4').
+ cerl:set_ann('$2', '$4').
anno_expressions -> anno_expression ',' anno_expressions : ['$1' | '$3'].
anno_expressions -> anno_expression : ['$1'].
@@ -240,6 +278,7 @@ single_expression -> primop_expr : '$1'.
single_expression -> try_expr : '$1'.
single_expression -> sequence : '$1'.
single_expression -> catch_expr : '$1'.
+single_expression -> map_expr : '$1'.
literal -> atomic_literal : '$1'.
literal -> tuple_literal : '$1'.
@@ -262,11 +301,33 @@ cons_literal -> '[' literal tail_literal : c_cons('$2', '$3').
tail_literal -> ']' : #c_literal{val=[]}.
tail_literal -> '|' literal ']' : '$2'.
-tail_literal -> ',' literal tail_literal : #c_cons{hd='$2',tl='$3'}.
+tail_literal -> ',' literal tail_literal : c_cons('$2', '$3').
tuple -> '{' '}' : c_tuple([]).
tuple -> '{' anno_expressions '}' : c_tuple('$2').
+map_expr -> '~' '{' '}' '~' : c_map([]).
+map_expr -> '~' '{' map_pairs '}' '~' : c_map('$3').
+map_expr -> '~' '{' map_pairs '|' anno_variable '}' '~' : ann_c_map([], '$5', '$3').
+map_expr -> '~' '{' map_pairs '|' anno_map_expr '}' '~' : ann_c_map([], '$5', '$3').
+
+anno_map_expr -> map_expr : '$1'.
+anno_map_expr -> '(' map_expr '-|' annotation ')' : cerl:set_ann('$2', '$4').
+
+map_pairs -> anno_map_pair : ['$1'].
+map_pairs -> anno_map_pair ',' map_pairs : ['$1' | '$3'].
+
+anno_map_pair -> map_pair : '$1'.
+anno_map_pair -> '(' map_pair '-|' annotation ')' : cerl:set_ann('$2', '$4').
+
+map_pair -> map_pair_assoc : '$1'.
+map_pair -> map_pair_exact : '$1'.
+
+map_pair_assoc -> anno_expression '=>' anno_expression :
+ #c_map_pair{op=#c_literal{val=assoc},key='$1',val='$3'}.
+map_pair_exact -> anno_expression ':=' anno_expression :
+ #c_map_pair{op=#c_literal{val=exact},key='$1',val='$3'}.
+
cons -> '[' anno_expression tail : c_cons('$2', '$3').
tail -> ']' : #c_literal{val=[]}.
@@ -274,10 +335,13 @@ tail -> '|' anno_expression ']' : '$2'.
tail -> ',' anno_expression tail : c_cons('$2', '$3').
binary -> '#' '{' '}' '#' : #c_literal{val = <<>>}.
-binary -> '#' '{' segments '}' '#' : #c_binary{segments='$3'}.
+binary -> '#' '{' segments '}' '#' : make_binary('$3').
+
+segments -> anno_segment ',' segments : ['$1' | '$3'].
+segments -> anno_segment : ['$1'].
-segments -> segment ',' segments : ['$1' | '$3'].
-segments -> segment : ['$1'].
+anno_segment -> segment : '$1'.
+anno_segment -> '(' segment '-|' annotation ')' : cerl:set_ann('$2', '$4').
segment -> '#' '<' anno_expression '>' '(' anno_expressions ')':
case '$6' of
@@ -293,7 +357,7 @@ function_name -> atom '/' integer :
anno_function_name -> function_name : '$1'.
anno_function_name -> '(' function_name '-|' annotation ')' :
- core_lib:set_anno('$2', '$4').
+ cerl:set_ann('$2', '$4').
let_vars -> anno_variable : ['$1'].
let_vars -> '<' '>' : [].
@@ -321,7 +385,7 @@ anno_clauses -> anno_clause : ['$1'].
anno_clause -> clause : '$1'.
anno_clause -> '(' clause '-|' annotation ')' :
- core_lib:set_anno('$2', '$4').
+ cerl:set_ann('$2', '$4').
clause -> clause_pattern 'when' anno_expression '->' anno_expression :
#c_clause{pats='$1',guard='$3',body='$5'}.
@@ -377,7 +441,56 @@ Erlang code.
-include("core_parse.hrl").
--import(cerl, [c_cons/2,c_tuple/1]).
+-import(cerl, [ann_c_map/3,ann_c_map_pattern/2,c_cons/2,c_map/1,
+ c_map_pattern/1,c_tuple/1]).
tok_val(T) -> element(3, T).
tok_line(T) -> element(2, T).
+
+%% make_binary([#c_bitstr{}]) -> #c_binary{} | #c_literal{}
+%% Create either #c_binary{} or #c_literal{} from the binary segments.
+%% In certain contexts, such as keys for maps, only literals and
+%% variables are allowed, so we must not create a #c_binary{}
+%% record in those situation.
+%%
+%% To keep this function simple, we use a crude heuristic. We will
+%% assume that Core Erlang has been produced by core_pp. If the
+%% segments *could* have been output from a literal binary by
+%% core_pp, we will create a #c_literal{}. Otherwise we will create a
+%% #c_binary{} record.
+
+make_binary(Segs) ->
+ try make_lit_bin(<<>>, Segs) of
+ Bs when is_bitstring(Bs) ->
+ #c_literal{val=Bs}
+ catch
+ throw:impossible ->
+ #c_binary{segments=Segs}
+ end.
+
+make_lit_bin(Acc, [#c_bitstr{val=I0,size=Sz0,unit=U0,type=Type0,flags=F0}|T]) ->
+ I = get_lit_val(I0),
+ Sz = get_lit_val(Sz0),
+ U = get_lit_val(U0),
+ Type = get_lit_val(Type0),
+ F = get_lit_val(F0),
+ if
+ is_integer(I), U =:= 1, Type =:= integer, F =:= [unsigned,big] ->
+ ok;
+ true ->
+ throw(impossible)
+ end,
+ if
+ Sz =< 8, T =:= [] ->
+ <<Acc/binary,I:Sz>>;
+ Sz =:= 8 ->
+ make_lit_bin(<<Acc/binary,I:8>>, T);
+ true ->
+ throw(impossible)
+ end;
+make_lit_bin(Acc, []) -> Acc.
+
+get_lit_val(#c_literal{val=Val}) -> Val;
+get_lit_val(_) -> throw(impossible).
+
+%% vim: syntax=erlang
diff --git a/lib/compiler/src/core_pp.erl b/lib/compiler/src/core_pp.erl
index 1f91a52be3..67209d06be 100644
--- a/lib/compiler/src/core_pp.erl
+++ b/lib/compiler/src/core_pp.erl
@@ -1,18 +1,19 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1999-2009. All Rights Reserved.
+%% Copyright Ericsson AB 1999-2016. All Rights Reserved.
%%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
%%
%% %CopyrightEnd%
%%
@@ -20,7 +21,7 @@
-module(core_pp).
--export([format/1]).
+-export([format/1,format_all/1]).
-include("core_parse.hrl").
@@ -32,25 +33,35 @@
%% Prettyprint-formats (naively) an abstract Core Erlang syntax
%% tree.
--record(ctxt, {class = term :: 'clause' | 'def' | 'expr' | 'term',
- indent = 0 :: integer(),
+-record(ctxt, {indent = 0 :: integer(),
item_indent = 2 :: integer(),
body_indent = 4 :: integer(),
- tab_width = 8 :: non_neg_integer(),
- line = 0 :: integer()}).
+ line = 0 :: integer(),
+ clean = true :: boolean()}).
+
+-define(TAB_WIDTH, 8).
-spec format(cerl:cerl()) -> iolist().
format(Node) ->
format(Node, #ctxt{}).
-maybe_anno(Node, Fun, Ctxt) ->
- As = core_lib:get_anno(Node),
- case get_line(As) of
+-spec format_all(cerl:cerl()) -> iolist().
+
+format_all(Node) ->
+ format(Node, #ctxt{clean=false}).
+
+maybe_anno(Node, Fun, #ctxt{clean=false}=Ctxt) ->
+ As = cerl:get_ann(Node),
+ maybe_anno(Node, Fun, Ctxt, As);
+maybe_anno(Node, Fun, #ctxt{clean=true}=Ctxt) ->
+ As0 = cerl:get_ann(Node),
+ case get_line(As0) of
none ->
- maybe_anno(Node, Fun, Ctxt, As);
+ maybe_anno(Node, Fun, Ctxt, As0);
Line ->
- if Line > Ctxt#ctxt.line ->
+ As = strip_line(As0),
+ if Line > Ctxt#ctxt.line ->
[io_lib:format("%% Line ~w",[Line]),
nl_indent(Ctxt),
maybe_anno(Node, Fun, Ctxt#ctxt{line = Line}, As)
@@ -60,22 +71,22 @@ maybe_anno(Node, Fun, Ctxt) ->
end
end.
-maybe_anno(Node, Fun, Ctxt, As) ->
- case strip_line(As) of
- [] ->
- Fun(Node, Ctxt);
- List ->
- Ctxt1 = add_indent(Ctxt, 2),
- Ctxt2 = add_indent(Ctxt1, 3),
- ["( ",
- Fun(Node, Ctxt1),
- nl_indent(Ctxt1),
- "-| ",format_anno(List, Ctxt2)," )"
- ]
- end.
+maybe_anno(Node, Fun, Ctxt, []) ->
+ Fun(Node, Ctxt);
+maybe_anno(Node, Fun, Ctxt, List) ->
+ Ctxt1 = add_indent(Ctxt, 2),
+ Ctxt2 = add_indent(Ctxt1, 3),
+ ["( ",
+ Fun(Node, Ctxt1),
+ nl_indent(Ctxt1),
+ "-| ",format_anno(List, Ctxt2)," )"
+ ].
format_anno([_|_]=List, Ctxt) ->
[$[,format_anno_list(List, Ctxt),$]];
+format_anno({file,Name}, _Ctxt) ->
+ %% Optimization: Reduces file size considerably.
+ io_lib:format("{'file',~p}", [Name]);
format_anno(Tuple, Ctxt) when is_tuple(Tuple) ->
[${,format_anno_list(tuple_to_list(Tuple), Ctxt),$}];
format_anno(Val, Ctxt) when is_atom(Val) ->
@@ -118,6 +129,13 @@ format_1(#c_literal{val=Tuple}, Ctxt) when is_tuple(Tuple) ->
format_1(#c_literal{anno=A,val=Bitstring}, Ctxt) when is_bitstring(Bitstring) ->
Segs = segs_from_bitstring(Bitstring),
format_1(#c_binary{anno=A,segments=Segs}, Ctxt);
+format_1(#c_literal{anno=A,val=M},Ctxt) when is_map(M) ->
+ Pairs = maps:to_list(M),
+ Op = #c_literal{val=assoc},
+ Cpairs = [#c_map_pair{op=Op,
+ key=#c_literal{val=K},
+ val=#c_literal{val=V}} || {K,V} <- Pairs],
+ format_1(#c_map{anno=A,arg=#c_literal{val=#{}},es=Cpairs},Ctxt);
format_1(#c_var{name={I,A}}, _) ->
[core_atom(I),$/,integer_to_list(A)];
format_1(#c_var{name=V}, _) ->
@@ -161,6 +179,22 @@ format_1(#c_tuple{es=Es}, Ctxt) ->
format_hseq(Es, ",", add_indent(Ctxt, 1), fun format/2),
$}
];
+format_1(#c_map{arg=#c_literal{anno=[],val=M},es=Es}, Ctxt)
+ when is_map(M), map_size(M) =:= 0 ->
+ ["~{",
+ format_hseq(Es, ",", add_indent(Ctxt, 1), fun format/2),
+ "}~"
+ ];
+format_1(#c_map{arg=Var,es=Es}, Ctxt) ->
+ ["~{",
+ format_hseq(Es, ",", add_indent(Ctxt, 1), fun format/2),
+ "|",format(Var, add_indent(Ctxt, 1)),
+ "}~"
+ ];
+format_1(#c_map_pair{op=#c_literal{val=assoc},key=K,val=V}, Ctxt) ->
+ format_map_pair("=>", K, V, Ctxt);
+format_1(#c_map_pair{op=#c_literal{val=exact},key=K,val=V}, Ctxt) ->
+ format_map_pair(":=", K, V, Ctxt);
format_1(#c_cons{hd=H,tl=T}, Ctxt) ->
Txt = ["["|format(H, add_indent(Ctxt, 1))],
[Txt|format_list_tail(T, add_indent(Ctxt, width(Txt, Ctxt)))];
@@ -169,9 +203,16 @@ format_1(#c_values{es=Es}, Ctxt) ->
format_1(#c_alias{var=V,pat=P}, Ctxt) ->
Txt = [format(V, Ctxt)|" = "],
[Txt|format(P, add_indent(Ctxt, width(Txt, Ctxt)))];
-format_1(#c_let{vars=Vs0,arg=A,body=B}, Ctxt) ->
- Vs = [core_lib:set_anno(V, []) || V <- Vs0],
- case is_simple_term(A) of
+format_1(#c_let{anno=Anno0,vars=Vs0,arg=A0,body=B}, #ctxt{clean=Clean}=Ctxt) ->
+ {Vs,A,Anno} = case Clean of
+ false ->
+ {Vs0,A0,Anno0};
+ true ->
+ {[cerl:set_ann(V, []) || V <- Vs0],
+ cerl:set_ann(A0, []),
+ []}
+ end,
+ case is_simple_term(A) andalso Anno =:= [] of
false ->
Ctxt1 = add_indent(Ctxt, Ctxt#ctxt.body_indent),
["let ",
@@ -188,7 +229,7 @@ format_1(#c_let{vars=Vs0,arg=A,body=B}, Ctxt) ->
["let ",
format_values(Vs, add_indent(Ctxt, 4)),
" = ",
- format(core_lib:set_anno(A, []), Ctxt1),
+ format(A, Ctxt1),
nl_indent(Ctxt),
"in "
| format(B, add_indent(Ctxt, 4))
@@ -295,35 +336,30 @@ format_1(#c_module{name=N,exports=Es,attrs=As,defs=Ds}, Ctxt) ->
[Mod," [",
format_vseq(Es,
"", ",",
- add_indent(set_class(Ctxt, term), width(Mod, Ctxt)+2),
+ add_indent(Ctxt, width(Mod, Ctxt)+2),
fun format/2),
"]",
nl_indent(Ctxt),
" attributes [",
format_vseq(As,
"", ",",
- add_indent(set_class(Ctxt, def), 16),
+ add_indent(Ctxt, 16),
fun format_def/2),
"]",
nl_indent(Ctxt),
format_funcs(Ds, Ctxt),
nl_indent(Ctxt)
| "end"
- ];
-format_1(Type, _) ->
- ["** Unsupported type: ",
- io_lib:write(Type)
- | " **"
].
format_funcs(Fs, Ctxt) ->
format_vseq(Fs,
"", "",
- set_class(Ctxt, def),
+ Ctxt,
fun format_def/2).
format_def({N,V}, Ctxt0) ->
- Ctxt1 = add_indent(set_class(Ctxt0, expr), Ctxt0#ctxt.body_indent),
+ Ctxt1 = add_indent(Ctxt0, Ctxt0#ctxt.body_indent),
[format(N, Ctxt0),
" =",
nl_indent(Ctxt1)
@@ -336,7 +372,10 @@ format_values(Vs, Ctxt) ->
format_hseq(Vs, ",", add_indent(Ctxt, 1), fun format/2),
$>].
-format_bitstr(#c_bitstr{val=V,size=S,unit=U,type=T,flags=Fs}, Ctxt0) ->
+format_bitstr(Node, Ctxt) ->
+ maybe_anno(Node, fun do_format_bitstr/2, Ctxt).
+
+do_format_bitstr(#c_bitstr{val=V,size=S,unit=U,type=T,flags=Fs}, Ctxt0) ->
Vs = [S, U, T, Fs],
Ctxt1 = add_indent(Ctxt0, 2),
Val = format(V, Ctxt1),
@@ -344,8 +383,7 @@ format_bitstr(#c_bitstr{val=V,size=S,unit=U,type=T,flags=Fs}, Ctxt0) ->
["#<", Val, ">(", format_hseq(Vs,",", Ctxt2, fun format/2), $)].
format_clauses(Cs, Ctxt) ->
- format_vseq(Cs, "", "", set_class(Ctxt, clause),
- fun format_clause/2).
+ format_vseq(Cs, "", "", Ctxt, fun format_clause/2).
format_clause(Node, Ctxt) ->
maybe_anno(Node, fun format_clause_1/2, Ctxt).
@@ -357,15 +395,13 @@ format_clause_1(#c_clause{pats=Ps,guard=G,body=B}, Ctxt) ->
case is_trivial_guard(G) of
true ->
[" when ",
- format_guard(G, add_indent(set_class(Ctxt, expr),
- width(Ptxt, Ctxt) + 6))];
+ format_guard(G, add_indent(Ctxt, width(Ptxt, Ctxt) + 6))];
false ->
[nl_indent(Ctxt2), "when ",
format_guard(G, add_indent(Ctxt2, 2))]
end++
" ->",
- nl_indent(Ctxt2)
- | format(B, set_class(Ctxt2, expr))
+ nl_indent(Ctxt2) | format(B, Ctxt2)
].
is_trivial_guard(#c_literal{val=Val}) when is_atom(Val) -> true;
@@ -417,46 +453,55 @@ format_list_tail(#c_cons{anno=[],hd=H,tl=T}, Ctxt) ->
format_list_tail(Tail, Ctxt) ->
["|",format(Tail, add_indent(Ctxt, 1)),"]"].
-indent(Ctxt) -> indent(Ctxt#ctxt.indent, Ctxt).
+format_map_pair(Op, K, V, Ctxt0) ->
+ Ctxt1 = add_indent(Ctxt0, 1),
+ Txt = format(K, Ctxt1),
+ Ctxt2 = add_indent(Ctxt0, width(Txt, Ctxt1)),
+ [Txt,Op,format(V, Ctxt2)].
-indent(N, _) when N =< 0 -> "";
-indent(N, Ctxt) ->
- T = Ctxt#ctxt.tab_width,
- string:chars($\t, N div T, string:chars($\s, N rem T)).
+indent(#ctxt{indent=N}) ->
+ if
+ N =< 0 ->
+ "";
+ true ->
+ string:chars($\t, N div ?TAB_WIDTH, spaces(N rem ?TAB_WIDTH))
+ end.
nl_indent(Ctxt) -> [$\n|indent(Ctxt)].
+spaces(0) -> "";
+spaces(1) -> " ";
+spaces(2) -> " ";
+spaces(3) -> " ";
+spaces(4) -> " ";
+spaces(5) -> " ";
+spaces(6) -> " ";
+spaces(7) -> " ".
+%% Undo indentation done by nl_indent/1.
unindent(T, Ctxt) ->
- unindent(T, Ctxt#ctxt.indent, Ctxt, []).
+ unindent(T, Ctxt#ctxt.indent, []).
-unindent(T, N, _, C) when N =< 0 ->
+unindent(T, N, C) when N =< 0 ->
[T|C];
-unindent([$\s|T], N, Ctxt, C) ->
- unindent(T, N - 1, Ctxt, C);
-unindent([$\t|T], N, Ctxt, C) ->
- Tab = Ctxt#ctxt.tab_width,
+unindent([$\s|T], N, C) ->
+ unindent(T, N - 1, C);
+unindent([$\t|T], N, C) ->
+ Tab = ?TAB_WIDTH,
if N >= Tab ->
- unindent(T, N - Tab, Ctxt, C);
+ unindent(T, N - Tab, C);
true ->
- unindent([string:chars($\s, Tab - N)|T], 0, Ctxt, C)
+ unindent([spaces(Tab - N)|T], 0, C)
end;
-unindent([L|T], N, Ctxt, C) when is_list(L) ->
- unindent(L, N, Ctxt, [T|C]);
-unindent([H|T], _, _, C) ->
- [H|[T|C]];
-unindent([], N, Ctxt, [H|T]) ->
- unindent(H, N, Ctxt, T);
-unindent([], _, _, []) -> [].
+unindent([L|T], N, C) when is_list(L) ->
+ unindent(L, N, [T|C]).
width(Txt, Ctxt) ->
- try width(Txt, 0, Ctxt, [])
- catch error:_ -> exit({bad_text,Txt})
- end.
+ width(Txt, 0, Ctxt, []).
width([$\t|T], A, Ctxt, C) ->
- width(T, A + Ctxt#ctxt.tab_width, Ctxt, C);
+ width(T, A + ?TAB_WIDTH, Ctxt, C);
width([$\n|T], _, Ctxt, C) ->
width(unindent([T|C], Ctxt), Ctxt);
width([H|T], A, Ctxt, C) when is_list(H) ->
@@ -470,14 +515,9 @@ width([], A, _, []) -> A.
add_indent(Ctxt, Dx) ->
Ctxt#ctxt{indent = Ctxt#ctxt.indent + Dx}.
-set_class(Ctxt, Class) ->
- Ctxt#ctxt{class = Class}.
-
core_atom(A) -> io_lib:write_string(atom_to_list(A), $').
-is_simple_term(#c_values{es=Es}) ->
- length(Es) < 3 andalso lists:all(fun is_simple_term/1, Es);
is_simple_term(#c_tuple{es=Es}) ->
length(Es) < 4 andalso lists:all(fun is_simple_term/1, Es);
is_simple_term(#c_var{}) -> true;
diff --git a/lib/compiler/src/core_scan.erl b/lib/compiler/src/core_scan.erl
index 0ca2f57dde..11b52f6c5f 100644
--- a/lib/compiler/src/core_scan.erl
+++ b/lib/compiler/src/core_scan.erl
@@ -1,19 +1,19 @@
-%% -*- coding: utf-8 -*-
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2000-2012. All Rights Reserved.
+%% Copyright Ericsson AB 2000-2016. All Rights Reserved.
%%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
%%
%% %CopyrightEnd%
%%
@@ -96,7 +96,7 @@ format_error(Other) -> io_lib:write(Other).
string_thing($') -> "atom"; %' stupid emacs
string_thing($") -> "string". %" stupid emacs
-
+
%% Re-entrant pre-scanner.
%%
%% If the input list of characters is insufficient to build a term the
@@ -214,7 +214,7 @@ pre_comment(eof, Sofar, Pos) ->
pre_error(E, Epos, Pos) ->
{error,{Epos,core_scan,E}, Pos}.
-
+
%% scan(CharList, StartPos)
%% This takes a list of characters and tries to tokenise them.
%%
@@ -272,6 +272,10 @@ scan1("->" ++ Cs, Toks, Pos) ->
scan1(Cs, [{'->',Pos}|Toks], Pos);
scan1("-|" ++ Cs, Toks, Pos) ->
scan1(Cs, [{'-|',Pos}|Toks], Pos);
+scan1(":=" ++ Cs, Toks, Pos) ->
+ scan1(Cs, [{':=',Pos}|Toks], Pos);
+scan1("=>" ++ Cs, Toks, Pos) ->
+ scan1(Cs, [{'=>',Pos}|Toks], Pos);
scan1([C|Cs], Toks, Pos) -> %Punctuation character
P = list_to_atom([C]),
scan1(Cs, [{P,Pos}|Toks], Pos);
diff --git a/lib/compiler/src/erl_bifs.erl b/lib/compiler/src/erl_bifs.erl
index 3ad3c8c690..6b2d781a76 100644
--- a/lib/compiler/src/erl_bifs.erl
+++ b/lib/compiler/src/erl_bifs.erl
@@ -1,18 +1,19 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2001-2013. All Rights Reserved.
+%% Copyright Ericsson AB 2001-2016. All Rights Reserved.
%%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
%%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
%%
%% %CopyrightEnd%
%%
@@ -91,6 +92,7 @@ is_pure(erlang, is_float, 1) -> true;
is_pure(erlang, is_function, 1) -> true;
is_pure(erlang, is_integer, 1) -> true;
is_pure(erlang, is_list, 1) -> true;
+is_pure(erlang, is_map, 1) -> true;
is_pure(erlang, is_number, 1) -> true;
is_pure(erlang, is_pid, 1) -> true;
is_pure(erlang, is_port, 1) -> true;
@@ -133,6 +135,7 @@ is_pure(math, erf, 1) -> true;
is_pure(math, erfc, 1) -> true;
is_pure(math, exp, 1) -> true;
is_pure(math, log, 1) -> true;
+is_pure(math, log2, 1) -> true;
is_pure(math, log10, 1) -> true;
is_pure(math, pow, 2) -> true;
is_pure(math, sin, 1) -> true;
diff --git a/lib/compiler/src/genop.tab b/lib/compiler/src/genop.tab
index 75ac91907a..dcbdeb32e6 100644..100755
--- a/lib/compiler/src/genop.tab
+++ b/lib/compiler/src/genop.tab
@@ -1,18 +1,19 @@
#
# %CopyrightBegin%
#
-# Copyright Ericsson AB 1998-2011. All Rights Reserved.
+# Copyright Ericsson AB 1998-2016. All Rights Reserved.
#
-# The contents of this file are subject to the Erlang Public License,
-# Version 1.1, (the "License"); you may not use this file except in
-# compliance with the License. You should have received a copy of the
-# Erlang Public License along with this software. If not, it can be
-# retrieved online at http://www.erlang.org/.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
#
-# Software distributed under the License is distributed on an "AS IS"
-# basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-# the License for the specific language governing rights and limitations
-# under the License.
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
#
# %CopyrightEnd%
#
@@ -23,49 +24,152 @@ BEAM_FORMAT_NUMBER=0
# arity or semantics, the format number above must be bumped.
#
+## @spec label Lbl
+## @doc Specify a module local label.
+## Label gives this code address a name (Lbl) and marks the start of
+## a basic block.
1: label/1
+
+## @spec func_info M F A
+## @doc Define a function M:F/A
2: func_info/3
+
3: int_code_end/0
#
# Function and BIF calls.
#
+
+## @spec call Arity Label
+## @doc Call the function at Label.
+## Save the next instruction as the return address in the CP register.
4: call/2
+
+## @spec call_last Arity Label Deallocate
+## @doc Deallocate and do a tail recursive call to the function at Label.
+## Do not update the CP register.
+## Before the call deallocate Deallocate words of stack.
5: call_last/3
+
+## @spec call_only Arity Label
+## @doc Do a tail recursive call to the function at Label.
+## Do not update the CP register.
6: call_only/2
+## @spec call_ext Arity Destination
+## @doc Call the function of arity Arity pointed to by Destination.
+## Save the next instruction as the return address in the CP register.
7: call_ext/2
+
+## @spec call_ext_last Arity Destination Deallocate
+## @doc Deallocate and do a tail call to function of arity Arity
+## pointed to by Destination.
+## Do not update the CP register.
+## Deallocate Deallocate words from the stack before the call.
8: call_ext_last/3
+## @spec bif0 Bif Reg
+## @doc Call the bif Bif and store the result in Reg.
9: bif0/2
+
+## @spec bif1 Lbl Bif Arg Reg
+## @doc Call the bif Bif with the argument Arg, and store the result in Reg.
+## On failure jump to Lbl.
10: bif1/4
+
+## @spec bif2 Lbl Bif Arg1 Arg2 Reg
+## @doc Call the bif Bif with the arguments Arg1 and Arg2,
+## and store the result in Reg.
+## On failure jump to Lbl.
11: bif2/5
#
# Allocating, deallocating and returning.
#
+
+## @spec allocate StackNeed Live
+## @doc Allocate space for StackNeed words on the stack. If a GC is needed
+## during allocation there are Live number of live X registers.
+## Also save the continuation pointer (CP) on the stack.
12: allocate/2
+
+## @spec allocate_heap StackNeed HeapNeed Live
+## @doc Allocate space for StackNeed words on the stack and ensure there is
+## space for HeapNeed words on the heap. If a GC is needed
+## save Live number of X registers.
+## Also save the continuation pointer (CP) on the stack.
13: allocate_heap/3
+
+## @spec allocate_zero StackNeed Live
+## @doc Allocate space for StackNeed words on the stack. If a GC is needed
+## during allocation there are Live number of live X registers.
+## Clear the new stack words. (By writing NIL.)
+## Also save the continuation pointer (CP) on the stack.
14: allocate_zero/2
+
+## @spec allocate_heap_zero StackNeed HeapNeed Live
+## @doc Allocate space for StackNeed words on the stack and HeapNeed words
+## on the heap. If a GC is needed
+## during allocation there are Live number of live X registers.
+## Clear the new stack words. (By writing NIL.)
+## Also save the continuation pointer (CP) on the stack.
15: allocate_heap_zero/3
+
+## @spec test_heap HeapNeed Live
+## @doc Ensure there is space for HeapNeed words on the heap. If a GC is needed
+## save Live number of X registers.
16: test_heap/2
+
+## @spec init N
+## @doc Clear the Nth stack word. (By writing NIL.)
17: init/1
+
+## @spec deallocate N
+## @doc Restore the continuation pointer (CP) from the stack and deallocate
+## N+1 words from the stack (the + 1 is for the CP).
18: deallocate/1
+
+## @spec return
+## @doc Return to the address in the continuation pointer (CP).
19: return/0
#
# Sending & receiving.
#
+## @spec send
+## @doc Send argument in x(1) as a message to the destination process in x(0).
+## The message in x(1) ends up as the result of the send in x(0).
20: send/0
+
+## @spec remove_message
+## @doc Unlink the current message from the message queue and store a
+## pointer to the message in x(0). Remove any timeout.
21: remove_message/0
+
+## @spec timeout
+## @doc Reset the save point of the mailbox and clear the timeout flag.
22: timeout/0
+
+## @spec loop_rec Label Source
+## @doc Loop over the message queue, if it is empty jump to Label.
23: loop_rec/2
+
+## @spec loop_rec_end Label
+## @doc Advance the save pointer to the next message and jump back to Label.
24: loop_rec_end/1
+
+## @spec wait Label
+## @doc Suspend the processes and set the entry point to the beginning of the
+## receive loop at Label.
25: wait/1
+
+## @spec wait_timeout Lable Time
+## @doc Sets up a timeout of Time milliseconds and saves the address of the
+## following instruction as the entry point if the timeout triggers.
26: wait_timeout/2
#
-# Arithmethic opcodes.
+# Arithmetic opcodes.
#
27: -m_plus/4
28: -m_minus/4
@@ -83,36 +187,106 @@ BEAM_FORMAT_NUMBER=0
#
# Comparision operators.
#
+
+## @spec is_lt Lbl Arg1 Arg2
+## @doc Compare two terms and jump to Lbl if Arg1 is not less than Arg2.
39: is_lt/3
+
+## @spec is_ge Lbl Arg1 Arg2
+## @doc Compare two terms and jump to Lbl if Arg1 is less than Arg2.
40: is_ge/3
+
+## @spec is_eq Lbl Arg1 Arg2
+## @doc Compare two terms and jump to Lbl if Arg1 is not (numerically) equal to Arg2.
41: is_eq/3
+
+## @spec is_ne Lbl Arg1 Arg2
+## @doc Compare two terms and jump to Lbl if Arg1 is (numerically) equal to Arg2.
42: is_ne/3
+
+## @spec is_eq_exact Lbl Arg1 Arg2
+## @doc Compare two terms and jump to Lbl if Arg1 is not exactly equal to Arg2.
43: is_eq_exact/3
+
+## @spec is_ne_exact Lbl Arg1 Arg2
+## @doc Compare two terms and jump to Lbl if Arg1 is exactly equal to Arg2.
44: is_ne_exact/3
#
# Type tests.
#
+
+## @spec is_integer Lbl Arg1
+## @doc Test the type of Arg1 and jump to Lbl if it is not an integer.
45: is_integer/2
+
+## @spec is_float Lbl Arg1
+## @doc Test the type of Arg1 and jump to Lbl if it is not a float.
46: is_float/2
+
+## @spec is_number Lbl Arg1
+## @doc Test the type of Arg1 and jump to Lbl if it is not a number.
47: is_number/2
+
+## @spec is_atom Lbl Arg1
+## @doc Test the type of Arg1 and jump to Lbl if it is not an atom.
48: is_atom/2
+
+## @spec is_pid Lbl Arg1
+## @doc Test the type of Arg1 and jump to Lbl if it is not a pid.
49: is_pid/2
+
+## @spec is_reference Lbl Arg1
+## @doc Test the type of Arg1 and jump to Lbl if it is not a reference.
50: is_reference/2
+
+## @spec is_port Lbl Arg1
+## @doc Test the type of Arg1 and jump to Lbl if it is not a port.
51: is_port/2
+
+## @spec is_nil Lbl Arg1
+## @doc Test the type of Arg1 and jump to Lbl if it is not nil.
52: is_nil/2
+
+## @spec is_binary Lbl Arg1
+## @doc Test the type of Arg1 and jump to Lbl if it is not a binary.
53: is_binary/2
+
54: -is_constant/2
+
+## @spec is_list Lbl Arg1
+## @doc Test the type of Arg1 and jump to Lbl if it is not a cons or nil.
55: is_list/2
+
+## @spec is_nonempty_list Lbl Arg1
+## @doc Test the type of Arg1 and jump to Lbl if it is not a cons.
56: is_nonempty_list/2
+
+## @spec is_tuple Lbl Arg1
+## @doc Test the type of Arg1 and jump to Lbl if it is not a tuple.
57: is_tuple/2
+
+## @spec test_arity Lbl Arg1 Arity
+## @doc Test the arity of (the tuple in) Arg1 and jump
+## to Lbl if it is not equal to Arity.
58: test_arity/3
#
# Indexing & jumping.
#
+
+## @spec select_val Arg FailLabel Destinations
+## @doc Jump to the destination label corresponding to Arg
+## in the Destinations list, if no arity matches, jump to FailLabel.
59: select_val/3
+
+## @spec select_tuple_arity Tuple FailLabel Destinations
+## @doc Check the arity of the tuple Tuple and jump to the corresponding
+## destination label, if no arity matches, jump to FailLabel.
60: select_tuple_arity/3
+
+## @spec jump Label
+## @doc Jump to Label.
61: jump/1
#
@@ -124,9 +298,26 @@ BEAM_FORMAT_NUMBER=0
#
# Moving, extracting, modifying.
#
+
+## @spec move Source Destination
+## @doc Move the source Source (a literal or a register) to
+## the destination register Destination.
64: move/2
+
+## @spec get_list Source Head Tail
+## @doc Get the head and tail (or car and cdr) parts of a list
+## (a cons cell) from Source and put them into the registers
+## Head and Tail.
65: get_list/3
+
+## @spec get_tuple_element Source Element Destination
+## @doc Get element number Element from the tuple in Source and put
+## it in the destination register Destination.
66: get_tuple_element/3
+
+## @spec set_tuple_element NewElement Tuple Position
+## @doc Update the element at position Position of the tuple Tuple
+## with the new element NewElement.
67: set_tuple_element/3
#
@@ -147,13 +338,26 @@ BEAM_FORMAT_NUMBER=0
#
# 'fun' support.
#
+## @spec call_fun Arity
+## @doc Call a fun of arity Arity. Assume arguments in
+## registers x(0) to x(Arity-1) and that the fun is in x(Arity).
+## Save the next instruction as the return address in the CP register.
75: call_fun/1
+
76: -make_fun/3
+
+## @spec is_function Lbl Arg1
+## @doc Test the type of Arg1 and jump to Lbl if it is not a
+## function (i.e. fun or closure).
77: is_function/2
#
# Late additions to R5.
#
+
+## @spec call_ext_only Arity Label
+## Do a tail recursive call to the function at Label.
+## Do not update the CP register.
78: call_ext_only/2
#
@@ -212,9 +416,14 @@ BEAM_FORMAT_NUMBER=0
111: bs_add/5
112: apply/1
113: apply_last/2
+## @spec is_boolean Lbl Arg1
+## @doc Test the type of Arg1 and jump to Lbl if it is not a Boolean.
114: is_boolean/2
# New instructions in R10B-6.
+## @spec is_function2 Lbl Arg1 Arity
+## @doc Test the type of Arg1 and jump to Lbl if it is not a
+## function of arity Arity.
115: is_function2/3
# New bit syntax matching in R11B.
@@ -229,7 +438,20 @@ BEAM_FORMAT_NUMBER=0
123: bs_restore2/2
# New GC bifs introduced in R11B.
+
+## @spec gc_bif1 Lbl Live Bif Arg Reg
+## @doc Call the bif Bif with the argument Arg, and store the result in Reg.
+## On failure jump to Lbl.
+## Do a garbage collection if necessary to allocate space on the heap
+## for the result (saving Live number of X registers).
124: gc_bif1/5
+
+## @spec gc_bif2 Lbl Live Bif Arg1 Arg2 Reg
+## @doc Call the bif Bif with the arguments Arg1 and Arg2,
+## and store the result in Reg.
+## On failure jump to Lbl.
+## Do a garbage collection if necessary to allocate space on the heap
+## for the result (saving Live number of X registers).
125: gc_bif2/6
# Experimental new bit_level bifs introduced in R11B.
@@ -241,6 +463,8 @@ BEAM_FORMAT_NUMBER=0
128: -put_literal/2
# R11B-5
+## @spec is_bitstr Lbl Arg1
+## @doc Test the type of Arg1 and jump to Lbl if it is not a bit string.
129: is_bitstr/2
# R12B
@@ -250,7 +474,12 @@ BEAM_FORMAT_NUMBER=0
133: bs_init_writable/0
134: bs_append/8
135: bs_private_append/6
+
+## @spec trim N Remaining
+## @doc Reduce the stack usage by N words,
+## keeping the CP on the top of the stack.
136: trim/2
+
137: bs_init_bits/6
# R12B-5
@@ -277,10 +506,34 @@ BEAM_FORMAT_NUMBER=0
# R14A
+## @spec recv_mark Label
+## @doc Save the end of the message queue and the address of
+## the label Label so that a recv_set instruction can start
+## scanning the inbox from this position.
150: recv_mark/1
+
+## @spec recv_set Label
+## @doc Check that the saved mark points to Label and set the
+## save pointer in the message queue to the last position
+## of the message queue saved by the recv_mark instruction.
151: recv_set/1
+
+## @spec gc_bif3 Lbl Live Bif Arg1 Arg2 Arg3 Reg
+## @doc Call the bif Bif with the arguments Arg1, Arg2 and Arg3,
+## and store the result in Reg.
+## On failure jump to Lbl.
+## Do a garbage collection if necessary to allocate space on the heap
+## for the result (saving Live number of X registers).
152: gc_bif3/7
# R15A
153: line/1
+
+# R17
+
+154: put_map_assoc/5
+155: put_map_exact/5
+156: is_map/2
+157: has_map_fields/3
+158: get_map_elements/3
diff --git a/lib/compiler/src/rec_env.erl b/lib/compiler/src/rec_env.erl
index 31a1f8b0b7..cdc513e57c 100644
--- a/lib/compiler/src/rec_env.erl
+++ b/lib/compiler/src/rec_env.erl
@@ -1,18 +1,19 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2001-2010. All Rights Reserved.
+%% Copyright Ericsson AB 2001-2016. All Rights Reserved.
%%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
%%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
%%
%% %CopyrightEnd%
%%
@@ -21,8 +22,7 @@
%% @doc Abstract environments, supporting self-referential bindings and
%% automatic new-key generation.
-%% The current implementation is based on Erlang standard library
-%% dictionaries.
+%% The current implementation is based on Erlang standard library maps.
%%% -define(DEBUG, true).
@@ -61,7 +61,7 @@ test_0(Type, N) ->
io:fwrite("\ncalls: ~w.\n", [get(new_key_calls)]),
io:fwrite("\nretries: ~w.\n", [get(new_key_retries)]),
io:fwrite("\nmax: ~w.\n", [get(new_key_max)]),
- dict:to_list(element(1,Env)).
+ maps:to_list(element(1,Env)).
test_1(integer = Type, N, Env) when is_integer(N), N > 0 ->
Key = new_key(Env),
@@ -72,20 +72,20 @@ test_1({custom, F} = Type, N, Env) when is_integer(N), N > 0 ->
test_1(_,0, Env) ->
Env.
-endif.
+%%@clear
%% Representation:
%%
%% environment() = [Mapping]
%%
-%% Mapping = {map, Dict} | {rec, Dict, Dict}
-%% Dict = dict:dictionary()
+%% Mapping = {map, map()} | {rec, map(), map()}
%%
-%% An empty environment is a list containing a single `{map, Dict}'
+%% An empty environment is a list containing a single `{map, map()}'
%% element - empty lists are not valid environments. To find a key in an
%% environment, it is searched for in each mapping in the list, in
%% order, until it the key is found in some mapping, or the end of the
-%% list is reached. In a 'rec' mapping, we keep the original dictionary
+%% list is reached. In a 'rec' mapping, we keep the original map
%% together with a version where entries may have been deleted - this
%% makes it possible to garbage collect the entire 'rec' mapping when
%% all its entries are unused (for example, by being shadowed by later
@@ -95,7 +95,7 @@ test_1(_,0, Env) ->
%% =====================================================================
%% @type environment(). An abstract environment.
--type mapping() :: {'map', dict()} | {'rec', dict(), dict()}.
+-type mapping() :: {'map', map()} | {'rec', map(), map()}.
-type environment() :: [mapping(),...].
%% =====================================================================
@@ -106,7 +106,7 @@ test_1(_,0, Env) ->
-spec empty() -> environment().
empty() ->
- [{map, dict:new()}].
+ [{map, #{}}].
%% =====================================================================
@@ -117,14 +117,14 @@ empty() ->
-spec is_empty(environment()) -> boolean().
-is_empty([{map, Dict} | Es]) ->
- N = dict:size(Dict),
+is_empty([{map, Map} | Es]) ->
+ N = map_size(Map),
if N =/= 0 -> false;
Es =:= [] -> true;
true -> is_empty(Es)
end;
-is_empty([{rec, Dict, _} | Es]) ->
- N = dict:size(Dict),
+is_empty([{rec, Map, _} | Es]) ->
+ N = map_size(Map),
if N =/= 0 -> false;
Es =:= [] -> true;
true -> is_empty(Es)
@@ -144,12 +144,12 @@ is_empty([{rec, Dict, _} | Es]) ->
size(Env) ->
env_size(Env).
-env_size([{map, Dict}]) ->
- dict:size(Dict);
-env_size([{map, Dict} | Env]) ->
- dict:size(Dict) + env_size(Env);
-env_size([{rec, Dict, _Dict0} | Env]) ->
- dict:size(Dict) + env_size(Env).
+env_size([{map, Map}]) ->
+ map_size(Map);
+env_size([{map, Map} | Env]) ->
+ map_size(Map) + env_size(Env);
+env_size([{rec, Map, _Map0} | Env]) ->
+ map_size(Map) + env_size(Env).
%% =====================================================================
@@ -163,8 +163,8 @@ env_size([{rec, Dict, _Dict0} | Env]) ->
-spec is_defined(term(), environment()) -> boolean().
-is_defined(Key, [{map, Dict} | Env]) ->
- case dict:is_key(Key, Dict) of
+is_defined(Key, [{map, Map} | Env]) ->
+ case maps:is_key(Key, Map) of
true ->
true;
false when Env =:= [] ->
@@ -172,8 +172,8 @@ is_defined(Key, [{map, Dict} | Env]) ->
false ->
is_defined(Key, Env)
end;
-is_defined(Key, [{rec, Dict, _Dict0} | Env]) ->
- dict:is_key(Key, Dict) orelse is_defined(Key, Env).
+is_defined(Key, [{rec, Map, _Map0} | Env]) ->
+ maps:is_key(Key, Map) orelse is_defined(Key, Env).
%% =====================================================================
@@ -186,12 +186,12 @@ is_defined(Key, [{rec, Dict, _Dict0} | Env]) ->
keys(Env) ->
lists:sort(keys(Env, [])).
-keys([{map, Dict}], S) ->
- dict:fetch_keys(Dict) ++ S;
-keys([{map, Dict} | Env], S) ->
- keys(Env, dict:fetch_keys(Dict) ++ S);
-keys([{rec, Dict, _Dict0} | Env], S) ->
- keys(Env, dict:fetch_keys(Dict) ++ S).
+keys([{map, Map}], S) ->
+ maps:keys(Map) ++ S;
+keys([{map, Map} | Env], S) ->
+ keys(Env, maps:keys(Map) ++ S);
+keys([{rec, Map, _Map0} | Env], S) ->
+ keys(Env, maps:keys(Map) ++ S).
%% =====================================================================
@@ -210,12 +210,12 @@ keys([{rec, Dict, _Dict0} | Env], S) ->
to_list(Env) ->
lists:sort(to_list(Env, [])).
-to_list([{map, Dict}], S) ->
- dict:to_list(Dict) ++ S;
-to_list([{map, Dict} | Env], S) ->
- to_list(Env, dict:to_list(Dict) ++ S);
-to_list([{rec, Dict, _Dict0} | Env], S) ->
- to_list(Env, dict:to_list(Dict) ++ S).
+to_list([{map, Map}], S) ->
+ maps:to_list(Map) ++ S;
+to_list([{map, Map} | Env], S) ->
+ to_list(Env, maps:to_list(Map) ++ S);
+to_list([{rec, Map, _Map0} | Env], S) ->
+ to_list(Env, maps:to_list(Map) ++ S).
%% =====================================================================
@@ -234,12 +234,12 @@ to_list([{rec, Dict, _Dict0} | Env], S) ->
-spec bind(term(), term(), environment()) -> environment().
-bind(Key, Value, [{map, Dict}]) ->
- [{map, dict:store(Key, Value, Dict)}];
-bind(Key, Value, [{map, Dict} | Env]) ->
- [{map, dict:store(Key, Value, Dict)} | delete_any(Key, Env)];
+bind(Key, Value, [{map, Map}]) ->
+ [{map, maps:put(Key, Value, Map)}];
+bind(Key, Value, [{map, Map} | Env]) ->
+ [{map, maps:put(Key, Value, Map)} | delete_any(Key, Env)];
bind(Key, Value, Env) ->
- [{map, dict:store(Key, Value, dict:new())} | delete_any(Key, Env)].
+ [{map, maps:put(Key, Value, #{})} | delete_any(Key, Env)].
%% =====================================================================
@@ -257,17 +257,17 @@ bind(Key, Value, Env) ->
-spec bind_list([term()], [term()], environment()) -> environment().
-bind_list(Ks, Vs, [{map, Dict}]) ->
- [{map, store_list(Ks, Vs, Dict)}];
-bind_list(Ks, Vs, [{map, Dict} | Env]) ->
- [{map, store_list(Ks, Vs, Dict)} | delete_list(Ks, Env)];
+bind_list(Ks, Vs, [{map, Map}]) ->
+ [{map, store_list(Ks, Vs, Map)}];
+bind_list(Ks, Vs, [{map, Map} | Env]) ->
+ [{map, store_list(Ks, Vs, Map)} | delete_list(Ks, Env)];
bind_list(Ks, Vs, Env) ->
- [{map, store_list(Ks, Vs, dict:new())} | delete_list(Ks, Env)].
+ [{map, store_list(Ks, Vs, #{})} | delete_list(Ks, Env)].
-store_list([K | Ks], [V | Vs], Dict) ->
- store_list(Ks, Vs, dict:store(K, V, Dict));
-store_list([], _, Dict) ->
- Dict.
+store_list([K | Ks], [V | Vs], Map) ->
+ store_list(Ks, Vs, maps:put(K, V, Map));
+store_list([], _, Map) ->
+ Map.
delete_list([K | Ks], Env) ->
delete_list(Ks, delete_any(K, Env));
@@ -296,48 +296,40 @@ delete_any(Key, Env) ->
-spec delete(term(), environment()) -> environment().
-delete(Key, [{map, Dict} = E | Env]) ->
- case dict:is_key(Key, Dict) of
- true ->
- [{map, dict:erase(Key, Dict)} | Env];
- false ->
+delete(Key, [{map, Map} = E | Env]) ->
+ case maps:take(Key, Map) of
+ {_, Map1} ->
+ [{map, Map1} | Env];
+ error ->
delete_1(Key, Env, E)
end;
-delete(Key, [{rec, Dict, Dict0} = E | Env]) ->
- case dict:is_key(Key, Dict) of
- true ->
- %% The Dict0 component must be preserved as it is until all
- %% keys in Dict have been deleted.
- Dict1 = dict:erase(Key, Dict),
- case dict:size(Dict1) of
- 0 ->
- Env; % the whole {rec,...} is now garbage
- _ ->
- [{rec, Dict1, Dict0} | Env]
- end;
- false ->
+delete(Key, [{rec, Map, Map0} = E | Env]) ->
+ case maps:take(Key, Map) of
+ {_, Map1} when map_size(Map1) =:= 0 ->
+ Env; % the whole {rec,...} is now garbage
+ %% The Map0 component must be preserved as it is until all
+ %% keys in Map have been deleted.
+ {_, Map1} ->
+ [{rec, Map1, Map0} | Env];
+ error ->
[E | delete(Key, Env)]
end.
%% This is just like above, except we pass on the preceding 'map'
%% mapping in the list to enable merging when removing 'rec' mappings.
-delete_1(Key, [{rec, Dict, Dict0} = E | Env], E1) ->
- case dict:is_key(Key, Dict) of
- true ->
- Dict1 = dict:erase(Key, Dict),
- case dict:size(Dict1) of
- 0 ->
- concat(E1, Env);
- _ ->
- [E1, {rec, Dict1, Dict0} | Env]
- end;
- false ->
+delete_1(Key, [{rec, Map, Map0} = E | Env], E1) ->
+ case maps:take(Key, Map) of
+ {_, Map1} when map_size(Map1) =:= 0 ->
+ concat(E1, Env);
+ {_, Map1} ->
+ [E1, {rec, Map1, Map0} | Env];
+ error ->
[E1, E | delete(Key, Env)]
end.
-concat({map, D1}, [{map, D2} | Env]) ->
- [dict:merge(fun (_K, V1, _V2) -> V1 end, D1, D2) | Env];
+concat({map, M1}, [{map, M2} | Env]) ->
+ [maps:merge(M2, M1) | Env];
concat(E1, Env) ->
[E1 | Env].
@@ -390,15 +382,15 @@ bind_recursive([], [], _, Env) ->
Env;
bind_recursive(Ks, Vs, F, Env) ->
F1 = fun (V) ->
- fun (Dict) -> F(V, [{rec, Dict, Dict} | Env]) end
+ fun (Map) -> F(V, [{rec, Map, Map} | Env]) end
end,
- Dict = bind_recursive_1(Ks, Vs, F1, dict:new()),
- [{rec, Dict, Dict} | Env].
+ Map = bind_recursive_1(Ks, Vs, F1, #{}),
+ [{rec, Map, Map} | Env].
-bind_recursive_1([K | Ks], [V | Vs], F, Dict) ->
- bind_recursive_1(Ks, Vs, F, dict:store(K, F(V), Dict));
-bind_recursive_1([], [], _, Dict) ->
- Dict.
+bind_recursive_1([K | Ks], [V | Vs], F, Map) ->
+ bind_recursive_1(Ks, Vs, F, maps:put(K, F(V), Map));
+bind_recursive_1([], [], _, Map) ->
+ Map.
%% =====================================================================
@@ -414,8 +406,8 @@ bind_recursive_1([], [], _, Dict) ->
-spec lookup(term(), environment()) -> 'error' | {'ok', term()}.
-lookup(Key, [{map, Dict} | Env]) ->
- case dict:find(Key, Dict) of
+lookup(Key, [{map, Map} | Env]) ->
+ case maps:find(Key, Map) of
{ok, _}=Value ->
Value;
error when Env =:= [] ->
@@ -423,10 +415,10 @@ lookup(Key, [{map, Dict} | Env]) ->
error ->
lookup(Key, Env)
end;
-lookup(Key, [{rec, Dict, Dict0} | Env]) ->
- case dict:find(Key, Dict) of
+lookup(Key, [{rec, Map, Map0} | Env]) ->
+ case maps:find(Key, Map) of
{ok, F} ->
- {ok, F(Dict0)};
+ {ok, F(Map0)};
error ->
lookup(Key, Env)
end.
@@ -596,7 +588,17 @@ start_range(Env) ->
%% (pseudo-)randomly distributed over the range.
generate(_N, Range) ->
- random:uniform(Range). % works well
+ %% We must use the same sequence of random variables to ensure
+ %% that two compilations of the same source code generates the
+ %% same BEAM code.
+ case rand:export_seed() of
+ undefined ->
+ _ = rand:seed(exsplus, {1,42,2053}),
+ ok;
+ _ ->
+ ok
+ end,
+ rand:uniform(Range). % works well
%% =====================================================================
diff --git a/lib/compiler/src/sys_core_dsetel.erl b/lib/compiler/src/sys_core_dsetel.erl
index f6696992b9..bd3eeae238 100644
--- a/lib/compiler/src/sys_core_dsetel.erl
+++ b/lib/compiler/src/sys_core_dsetel.erl
@@ -1,18 +1,19 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2002-2010. All Rights Reserved.
+%% Copyright Ericsson AB 2002-2016. All Rights Reserved.
%%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
%%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
%%
%% %CopyrightEnd%
%%
@@ -71,7 +72,7 @@ module(M0, _Options) ->
{ok,M}.
visit_module(#c_module{defs=Ds0}=R) ->
- Env = dict:new(),
+ Env = #{},
Ds = visit_module_1(Ds0, Env, []),
R#c_module{defs=Ds}.
@@ -94,14 +95,23 @@ visit(Env, #c_var{name={_,_}}=R) ->
{R, Env};
visit(Env0, #c_var{name=X}=R) ->
%% There should not be any free variables. If there are,
- %% the next line will cause an exception.
- {ok, N} = dict:find(X, Env0),
- {R, dict:store(X, N+1, Env0)};
+ %% the case will fail with an exception.
+ case Env0 of
+ #{X:=N} ->
+ {R, Env0#{X:=N+1}}
+ end;
visit(Env, #c_literal{}=R) ->
{R, Env};
visit(Env0, #c_tuple{es=Es0}=R) ->
{Es1,Env1} = visit_list(Env0, Es0),
{R#c_tuple{es=Es1}, Env1};
+visit(Env0, #c_map{es=Es0}=R) ->
+ {Es1,Env1} = visit_list(Env0, Es0),
+ {R#c_map{es=Es1}, Env1};
+visit(Env0, #c_map_pair{key=K0,val=V0}=R) ->
+ {K,Env1} = visit(Env0, K0),
+ {V,Env2} = visit(Env1, V0),
+ {R#c_map_pair{key=K,val=V}, Env2};
visit(Env0, #c_cons{hd=H0,tl=T0}=R) ->
{H1,Env1} = visit(Env0, H0),
{T1,Env2} = visit(Env1, T0),
@@ -195,7 +205,7 @@ bind_vars(Vs, Env) ->
bind_vars(Vs, Env, []).
bind_vars([#c_var{name=X}|Vs], Env0, Xs)->
- bind_vars(Vs, dict:store(X, 0, Env0), [X|Xs]);
+ bind_vars(Vs, Env0#{X=>0}, [X|Xs]);
bind_vars([], Env,Xs) ->
{Xs, Env}.
@@ -209,9 +219,14 @@ visit_pats([], Env, Vs) ->
{Vs, Env}.
visit_pat(Env0, #c_var{name=V}, Vs) ->
- {[V|Vs], dict:store(V, 0, Env0)};
+ {[V|Vs], Env0#{V=>0}};
visit_pat(Env0, #c_tuple{es=Es}, Vs) ->
visit_pats(Es, Env0, Vs);
+visit_pat(Env0, #c_map{es=Es}, Vs) ->
+ visit_pats(Es, Env0, Vs);
+visit_pat(Env0, #c_map_pair{op=#c_literal{val=exact},key=V,val=K}, Vs0) ->
+ {Vs1, Env1} = visit_pat(Env0, V, Vs0),
+ visit_pat(Env1, K, Vs1);
visit_pat(Env0, #c_cons{hd=H,tl=T}, Vs0) ->
{Vs1, Env1} = visit_pat(Env0, H, Vs0),
visit_pat(Env1, T, Vs1);
@@ -222,23 +237,25 @@ visit_pat(Env0, #c_bitstr{val=Val,size=Sz}, Vs0) ->
case Sz of
#c_var{name=V} ->
%% We don't tolerate free variables.
- {ok, N} = dict:find(V, Env0),
- {Vs0, dict:store(V, N+1, Env0)};
+ case Env0 of
+ #{V:=N} ->
+ {Vs0, Env0#{V:=N+1}}
+ end;
_ ->
visit_pat(Env0, Sz, Vs0)
end,
visit_pat(Env1, Val, Vs1);
visit_pat(Env0, #c_alias{pat=P,var=#c_var{name=V}}, Vs) ->
- visit_pat(dict:store(V, 0, Env0), P, [V|Vs]);
+ visit_pat(Env0#{V=>0}, P, [V|Vs]);
visit_pat(Env, #c_literal{}, Vs) ->
{Vs, Env}.
restore_vars([V|Vs], Env0, Env1) ->
- case dict:find(V, Env0) of
- {ok, N} ->
- restore_vars(Vs, Env0, dict:store(V, N, Env1));
- error ->
- restore_vars(Vs, Env0, dict:erase(V, Env1))
+ case Env0 of
+ #{V:=N} ->
+ restore_vars(Vs, Env0, Env1#{V=>N});
+ _ ->
+ restore_vars(Vs, Env0, maps:remove(V, Env1))
end;
restore_vars([], _, Env1) ->
Env1.
@@ -336,8 +353,8 @@ is_safe(#c_literal{}) -> true;
is_safe(_) -> false.
is_single_use(V, Env) ->
- case dict:find(V, Env) of
- {ok, 1} ->
+ case Env of
+ #{V:=1} ->
true;
_ ->
false
diff --git a/lib/compiler/src/sys_core_fold.erl b/lib/compiler/src/sys_core_fold.erl
index cda3f7d81e..e0de50f3ae 100644
--- a/lib/compiler/src/sys_core_fold.erl
+++ b/lib/compiler/src/sys_core_fold.erl
@@ -1,18 +1,19 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1999-2013. All Rights Reserved.
+%% Copyright Ericsson AB 1999-2016. All Rights Reserved.
%%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
%%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
%%
%% %CopyrightEnd%
%%
@@ -70,9 +71,10 @@
-export([module/2,format_error/1]).
-import(lists, [map/2,foldl/3,foldr/3,mapfoldl/3,all/2,any/2,
- reverse/1,reverse/2,member/2,nth/2,flatten/1]).
+ reverse/1,reverse/2,member/2,nth/2,flatten/1,
+ unzip/1,keyfind/3]).
--import(cerl, [ann_c_cons/3,ann_c_tuple/2]).
+-import(cerl, [ann_c_cons/3,ann_c_map/3,ann_c_tuple/2]).
-include("core_parse.hrl").
@@ -91,10 +93,14 @@
-endif.
%% Variable value info.
--record(sub, {v=[], %Variable substitutions
- s=[], %Variables in scope
- t=[], %Types
- in_guard=false}). %In guard or not.
+-record(sub, {v=[], %Variable substitutions
+ s=cerl_sets:new() :: cerl_sets:set(), %Variables in scope
+ t=#{} :: map(), %Types
+ in_guard=false}). %In guard or not.
+
+-type type_info() :: cerl:cerl() | 'bool' | 'integer'.
+-type yes_no_maybe() :: 'yes' | 'no' | 'maybe'.
+-type sub() :: #sub{}.
-spec module(cerl:c_module(), [compile:option()]) ->
{'ok', cerl:c_module(), [_]}.
@@ -246,6 +252,16 @@ expr(#c_tuple{anno=Anno,es=Es0}=Tuple, Ctxt, Sub) ->
value ->
ann_c_tuple(Anno, Es)
end;
+expr(#c_map{anno=Anno,arg=V0,es=Es0}=Map, Ctxt, Sub) ->
+ Es = pair_list(Es0, Ctxt, Sub),
+ case Ctxt of
+ effect ->
+ add_warning(Map, useless_building),
+ expr(make_effect_seq(Es, Sub), Ctxt, Sub);
+ value ->
+ V = expr(V0, Ctxt, Sub),
+ ann_c_map(Anno,V,Es)
+ end;
expr(#c_binary{segments=Ss}=Bin0, Ctxt, Sub) ->
%% Warn for useless building, but always build the binary
%% anyway to preserve a possible exception.
@@ -261,7 +277,7 @@ expr(#c_fun{}=Fun, effect, _) ->
add_warning(Fun, useless_building),
void();
expr(#c_fun{vars=Vs0,body=B0}=Fun, Ctxt0, Sub0) ->
- {Vs1,Sub1} = pattern_list(Vs0, Sub0),
+ {Vs1,Sub1} = var_list(Vs0, Sub0),
Ctxt = case Ctxt0 of
{letrec,Ctxt1} -> Ctxt1;
value -> value
@@ -283,7 +299,8 @@ expr(#c_seq{arg=Arg0,body=B0}=Seq0, Ctxt, Sub) ->
false -> Seq0#c_seq{arg=Arg,body=B1}
end
end;
-expr(#c_let{}=Let, Ctxt, Sub) ->
+expr(#c_let{}=Let0, Ctxt, Sub) ->
+ Let = opt_case_in_let(Let0),
case simplify_let(Let, Sub) of
impossible ->
%% The argument for the let is "simple", i.e. has no
@@ -295,32 +312,83 @@ expr(#c_let{}=Let, Ctxt, Sub) ->
%% Now recursively re-process the new expression.
expr(Expr, Ctxt, sub_new_preserve_types(Sub))
end;
+expr(#c_letrec{body=#c_var{}}=Letrec, effect, _Sub) ->
+ %% This is named fun in an 'effect' context. Warn and ignore.
+ add_warning(Letrec, useless_building),
+ void();
expr(#c_letrec{defs=Fs0,body=B0}=Letrec, Ctxt, Sub) ->
Fs1 = map(fun ({Name,Fb}) ->
{Name,expr(Fb, {letrec,Ctxt}, Sub)}
end, Fs0),
- B1 = body(B0, value, Sub),
+ B1 = body(B0, Ctxt, Sub),
Letrec#c_letrec{defs=Fs1,body=B1};
expr(#c_case{}=Case0, Ctxt, Sub) ->
+ %% Ideally, the compiler should only emit warnings when there is
+ %% a real mistake in the code being compiled. We use the follow
+ %% heuristics in an attempt to approach that ideal:
+ %%
+ %% * If the guard for a clause always fails, we will emit a
+ %% warning.
+ %%
+ %% * If a case expression is a literal, we will emit no warnings
+ %% for clauses that will not match or for clauses that are
+ %% shadowed after a clause that will always match. That means
+ %% that code such as:
+ %%
+ %% case ?DEBUG of
+ %% false -> ok;
+ %% true -> ...
+ %% end
+ %%
+ %% (where ?DEBUG expands to either 'true' or 'false') will not
+ %% produce any warnings.
+ %%
+ %% * If the case expression is not literal, warnings will be
+ %% emitted for every clause that don't match and for all
+ %% clauses following a clause that will always match.
+ %%
+ %% * If no clause will ever match, there will be a warning
+ %% (in addition to any warnings that may have been emitted
+ %% according to the rules above).
+ %%
case opt_bool_case(Case0) of
#c_case{arg=Arg0,clauses=Cs0}=Case1 ->
Arg1 = body(Arg0, value, Sub),
- {Arg2,Cs1} = case_opt(Arg1, Cs0),
- Cs2 = clauses(Arg2, Cs1, Case1, Ctxt, Sub),
- Case = eval_case(Case1#c_case{arg=Arg2,clauses=Cs2}, Sub),
- bsm_an(Case);
+ LitExpr = cerl:is_literal(Arg1),
+ {Arg2,Cs1} = case_opt(Arg1, Cs0, Sub),
+ Cs2 = clauses(Arg2, Cs1, Ctxt, Sub, LitExpr),
+ Case = Case1#c_case{arg=Arg2,clauses=Cs2},
+ warn_no_clause_match(Case1, Case),
+ Expr = eval_case(Case, Sub),
+ case move_case_into_arg(Case, Sub) of
+ impossible ->
+ bsm_an(Expr);
+ Other ->
+ expr(Other, Ctxt, sub_new_preserve_types(Sub))
+ end;
Other ->
expr(Other, Ctxt, Sub)
end;
expr(#c_receive{clauses=Cs0,timeout=T0,action=A0}=Recv, Ctxt, Sub) ->
- Cs1 = clauses(#c_var{name='_'}, Cs0, Recv, Ctxt, Sub), %This is all we know
+ Cs1 = clauses(#c_var{name='_'}, Cs0, Ctxt, Sub, false),
T1 = expr(T0, value, Sub),
A1 = body(A0, Ctxt, Sub),
Recv#c_receive{clauses=Cs1,timeout=T1,action=A1};
-expr(#c_apply{op=Op0,args=As0}=App, _, Sub) ->
+expr(#c_apply{anno=Anno,op=Op0,args=As0}=App, _, Sub) ->
Op1 = expr(Op0, value, Sub),
As1 = expr_list(As0, value, Sub),
- App#c_apply{op=Op1,args=As1};
+ case Op1 of
+ #c_var{} ->
+ App#c_apply{op=Op1,args=As1};
+ _ ->
+ add_warning(App, invalid_call),
+ Err = #c_call{anno=Anno,
+ module=#c_literal{val=erlang},
+ name=#c_literal{val=error},
+ args=[#c_tuple{es=[#c_literal{val='badfun'},
+ Op1]}]},
+ make_effect_seq(As1++[Err], Sub)
+ end;
expr(#c_call{module=M0,name=N0}=Call0, Ctxt, Sub) ->
M1 = expr(M0, value, Sub),
N1 = expr(N0, value, Sub),
@@ -363,13 +431,13 @@ expr(#c_try{anno=A,arg=E0,vars=Vs0,body=B0,evars=Evs0,handler=H0}=Try, _, Sub0)
%% Here is the general try/catch construct outside of guards.
%% We can remove try if the value is simple and replace it with a let.
E1 = body(E0, value, Sub0),
- {Vs1,Sub1} = pattern_list(Vs0, Sub0),
+ {Vs1,Sub1} = var_list(Vs0, Sub0),
B1 = body(B0, value, Sub1),
case is_safe_simple(E1, Sub0) of
true ->
expr(#c_let{anno=A,vars=Vs1,arg=E1,body=B1}, value, Sub0);
false ->
- {Evs1,Sub2} = pattern_list(Evs0, Sub0),
+ {Evs1,Sub2} = var_list(Evs0, Sub0),
H1 = body(H0, value, Sub2),
Try#c_try{arg=E1,vars=Vs1,body=B1,evars=Evs1,handler=H1}
end.
@@ -377,6 +445,16 @@ expr(#c_try{anno=A,arg=E0,vars=Vs0,body=B0,evars=Evs0,handler=H0}=Try, _, Sub0)
expr_list(Es, Ctxt, Sub) ->
[expr(E, Ctxt, Sub) || E <- Es].
+pair_list(Es, Ctxt, Sub) ->
+ [pair(E, Ctxt, Sub) || E <- Es].
+
+pair(#c_map_pair{key=K,val=V}, effect, Sub) ->
+ make_effect_seq([K,V], Sub);
+pair(#c_map_pair{key=K0,val=V0}=Pair, value=Ctxt, Sub) ->
+ K = expr(K0, Ctxt, Sub),
+ V = expr(V0, Ctxt, Sub),
+ Pair#c_map_pair{key=K,val=V}.
+
bitstr_list(Es, Sub) ->
[bitstr(E, Sub) || E <- Es].
@@ -402,10 +480,7 @@ is_safe_simple(#c_call{module=#c_literal{val=erlang},
case erl_internal:bool_op(Name, NumArgs) of
true ->
%% Boolean operators are safe if the arguments are boolean.
- all(fun(#c_var{name=V}) -> is_boolean_type(V, Sub);
- (#c_literal{val=Lit}) -> is_boolean(Lit);
- (_) -> false
- end, Args);
+ all(fun(C) -> is_boolean_type(C, Sub) =:= yes end, Args);
false ->
%% We need a rather complicated test to ensure that
%% we only allow safe calls that are allowed in a guard.
@@ -620,23 +695,15 @@ count_bits_1(Int, Bits) -> count_bits_1(Int bsr 64, Bits+64).
%% a rewritten expression consisting of a sequence of
%% the arguments only is returned.
-useless_call(effect, #c_call{anno=Anno,
- module=#c_literal{val=Mod},
+useless_call(effect, #c_call{module=#c_literal{val=Mod},
name=#c_literal{val=Name},
args=Args}=Call) ->
A = length(Args),
case erl_bifs:is_safe(Mod, Name, A) of
false ->
case erl_bifs:is_pure(Mod, Name, A) of
- true ->
- case member(result_not_wanted, Anno) of
- false ->
- add_warning(Call, result_ignored);
- true ->
- ok
- end;
- false ->
- ok
+ true -> add_warning(Call, result_ignored);
+ false -> ok
end,
no;
true ->
@@ -646,7 +713,7 @@ useless_call(effect, #c_call{anno=Anno,
useless_call(_, _) -> no.
%% make_effect_seq([Expr], Sub) -> #c_seq{}|void()
-%% Convert a list of epressions evaluated in effect context to a chain of
+%% Convert a list of expressions evaluated in effect context to a chain of
%% #c_seq{}. The body in the innermost #c_seq{} will be void().
%% Anything that will not have any effect will be thrown away.
@@ -662,385 +729,23 @@ make_effect_seq([], _) -> void().
call(#c_call{args=As}=Call, #c_literal{val=M}=M0, #c_literal{val=N}=N0, Sub) ->
case get(no_inline_list_funcs) of
true ->
- call_0(Call, M0, N0, As, Sub);
+ call_1(Call, M0, N0, As, Sub);
false ->
- call_1(Call, M, N, As, Sub)
+ case sys_core_fold_lists:call(Call, M, N, As) of
+ none ->
+ call_1(Call, M, N, As, Sub);
+ Core ->
+ expr(Core, Sub)
+ end
+
end;
call(#c_call{args=As}=Call, M, N, Sub) ->
- call_0(Call, M, N, As, Sub).
+ call_1(Call, M, N, As, Sub).
-call_0(Call, M, N, As0, Sub) ->
+call_1(Call, M, N, As0, Sub) ->
As1 = expr_list(As0, value, Sub),
fold_call(Call#c_call{args=As1}, M, N, As1, Sub).
-%% We inline some very common higher order list operations.
-%% We use the same evaluation order as the library function.
-
-call_1(#c_call{anno=Anno}, lists, all, [Arg1,Arg2], Sub) ->
- Loop = #c_var{name={'lists^all',1}},
- F = #c_var{name='F'},
- Xs = #c_var{name='Xs'},
- X = #c_var{name='X'},
- Err1 = #c_tuple{es=[#c_literal{val='case_clause'}, X]},
- CC1 = #c_clause{pats=[#c_literal{val=true}], guard=#c_literal{val=true},
- body=#c_apply{anno=Anno, op=Loop, args=[Xs]}},
- CC2 = #c_clause{pats=[#c_literal{val=false}], guard=#c_literal{val=true},
- body=#c_literal{val=false}},
- CC3 = #c_clause{pats=[X], guard=#c_literal{val=true},
- body=match_fail(Anno, Err1)},
- C1 = #c_clause{pats=[#c_cons{hd=X, tl=Xs}], guard=#c_literal{val=true},
- body=#c_case{arg=#c_apply{anno=Anno, op=F, args=[X]},
- clauses = [CC1, CC2, CC3]}},
- C2 = #c_clause{pats=[#c_literal{val=[]}],
- guard=#c_call{module=#c_literal{val=erlang},
- name=#c_literal{val=is_function},
- args=[F, #c_literal{val=1}]},
- body=#c_literal{val=true}},
- Err2 = #c_tuple{es=[#c_literal{val='function_clause'}, F, Xs]},
- C3 = #c_clause{pats=[Xs], guard=#c_literal{val=true},
- body=match_fail([{function_name,{'lists^all',1}}|Anno], Err2)},
- Fun = #c_fun{vars=[Xs],
- body=#c_case{arg=Xs, clauses=[C1, C2, C3]}},
- L = #c_var{name='L'},
- expr(#c_let{vars=[F, L], arg=#c_values{es=[Arg1, Arg2]},
- body=#c_letrec{defs=[{Loop,Fun}],
- body=#c_apply{anno=Anno, op=Loop, args=[L]}}},
- Sub);
-call_1(#c_call{anno=Anno}, lists, any, [Arg1,Arg2], Sub) ->
- Loop = #c_var{name={'lists^any',1}},
- F = #c_var{name='F'},
- Xs = #c_var{name='Xs'},
- X = #c_var{name='X'},
- Err1 = #c_tuple{es=[#c_literal{val='case_clause'}, X]},
- CC1 = #c_clause{pats=[#c_literal{val=true}], guard=#c_literal{val=true},
- body=#c_literal{val=true}},
- CC2 = #c_clause{pats=[#c_literal{val=false}], guard=#c_literal{val=true},
- body=#c_apply{anno=Anno, op=Loop, args=[Xs]}},
- CC3 = #c_clause{pats=[X], guard=#c_literal{val=true},
- body=match_fail(Anno, Err1)},
- C1 = #c_clause{pats=[#c_cons{hd=X, tl=Xs}], guard=#c_literal{val=true},
- body=#c_case{arg=#c_apply{anno=Anno, op=F, args=[X]},
- clauses = [CC1, CC2, CC3]}},
- C2 = #c_clause{pats=[#c_literal{val=[]}],
- guard=#c_call{module=#c_literal{val=erlang},
- name=#c_literal{val=is_function},
- args=[F, #c_literal{val=1}]},
- body=#c_literal{val=false}},
- Err2 = #c_tuple{es=[#c_literal{val='function_clause'}, F, Xs]},
- C3 = #c_clause{pats=[Xs], guard=#c_literal{val=true},
- body=match_fail([{function_name,{'lists^any',1}}|Anno], Err2)},
- Fun = #c_fun{vars=[Xs],
- body=#c_case{arg=Xs, clauses=[C1, C2, C3]}},
- L = #c_var{name='L'},
- expr(#c_let{vars=[F, L], arg=#c_values{es=[Arg1, Arg2]},
- body=#c_letrec{defs=[{Loop,Fun}],
- body=#c_apply{anno=Anno, op=Loop, args=[L]}}},
- Sub);
-call_1(#c_call{anno=Anno}, lists, foreach, [Arg1,Arg2], Sub) ->
- Loop = #c_var{name={'lists^foreach',1}},
- F = #c_var{name='F'},
- Xs = #c_var{name='Xs'},
- X = #c_var{name='X'},
- C1 = #c_clause{pats=[#c_cons{hd=X, tl=Xs}], guard=#c_literal{val=true},
- body=#c_seq{arg=#c_apply{anno=Anno, op=F, args=[X]},
- body=#c_apply{anno=Anno, op=Loop, args=[Xs]}}},
- C2 = #c_clause{pats=[#c_literal{val=[]}],
- guard=#c_call{module=#c_literal{val=erlang},
- name=#c_literal{val=is_function},
- args=[F, #c_literal{val=1}]},
- body=#c_literal{val=ok}},
- Err = #c_tuple{es=[#c_literal{val='function_clause'}, F, Xs]},
- C3 = #c_clause{pats=[Xs], guard=#c_literal{val=true},
- body=match_fail([{function_name,{'lists^foreach',1}}|Anno], Err)},
- Fun = #c_fun{vars=[Xs],
- body=#c_case{arg=Xs, clauses=[C1, C2, C3]}},
- L = #c_var{name='L'},
- expr(#c_let{vars=[F, L], arg=#c_values{es=[Arg1, Arg2]},
- body=#c_letrec{defs=[{Loop,Fun}],
- body=#c_apply{anno=Anno, op=Loop, args=[L]}}},
- Sub);
-call_1(#c_call{anno=Anno}, lists, map, [Arg1,Arg2], Sub) ->
- Loop = #c_var{name={'lists^map',1}},
- F = #c_var{name='F'},
- Xs = #c_var{name='Xs'},
- X = #c_var{name='X'},
- H = #c_var{name='H'},
- C1 = #c_clause{pats=[#c_cons{hd=X, tl=Xs}], guard=#c_literal{val=true},
- body=#c_let{vars=[H], arg=#c_apply{anno=Anno,
- op=F,
- args=[X]},
- body=#c_cons{hd=H,
- anno=[compiler_generated],
- tl=#c_apply{anno=Anno,
- op=Loop,
- args=[Xs]}}}},
- C2 = #c_clause{pats=[#c_literal{val=[]}],
- guard=#c_call{module=#c_literal{val=erlang},
- name=#c_literal{val=is_function},
- args=[F, #c_literal{val=1}]},
- body=#c_literal{val=[]}},
- Err = #c_tuple{es=[#c_literal{val='function_clause'}, F, Xs]},
- C3 = #c_clause{pats=[Xs], guard=#c_literal{val=true},
- body=match_fail([{function_name,{'lists^map',1}}|Anno], Err)},
- Fun = #c_fun{vars=[Xs],
- body=#c_case{arg=Xs, clauses=[C1, C2, C3]}},
- L = #c_var{name='L'},
- expr(#c_let{vars=[F, L], arg=#c_values{es=[Arg1, Arg2]},
- body=#c_letrec{defs=[{Loop,Fun}],
- body=#c_apply{anno=Anno, op=Loop, args=[L]}}},
- Sub);
-call_1(#c_call{anno=Anno}, lists, flatmap, [Arg1,Arg2], Sub) ->
- Loop = #c_var{name={'lists^flatmap',1}},
- F = #c_var{name='F'},
- Xs = #c_var{name='Xs'},
- X = #c_var{name='X'},
- H = #c_var{name='H'},
- C1 = #c_clause{pats=[#c_cons{hd=X, tl=Xs}], guard=#c_literal{val=true},
- body=#c_let{vars=[H],
- arg=#c_apply{anno=Anno, op=F, args=[X]},
- body=#c_call{anno=[compiler_generated|Anno],
- module=#c_literal{val=erlang},
- name=#c_literal{val='++'},
- args=[H,
- #c_apply{anno=Anno,
- op=Loop,
- args=[Xs]}]}}},
- C2 = #c_clause{pats=[#c_literal{val=[]}],
- guard=#c_call{module=#c_literal{val=erlang},
- name=#c_literal{val=is_function},
- args=[F, #c_literal{val=1}]},
- body=#c_literal{val=[]}},
- Err = #c_tuple{es=[#c_literal{val='function_clause'}, F, Xs]},
- C3 = #c_clause{pats=[Xs], guard=#c_literal{val=true},
- body=match_fail([{function_name,{'lists^flatmap',1}}|Anno], Err)},
- Fun = #c_fun{vars=[Xs],
- body=#c_case{arg=Xs, clauses=[C1, C2, C3]}},
- L = #c_var{name='L'},
- expr(#c_let{vars=[F, L], arg=#c_values{es=[Arg1, Arg2]},
- body=#c_letrec{defs=[{Loop,Fun}],
- body=#c_apply{anno=Anno, op=Loop, args=[L]}}},
- Sub);
-call_1(#c_call{anno=Anno}, lists, filter, [Arg1,Arg2], Sub) ->
- Loop = #c_var{name={'lists^filter',1}},
- F = #c_var{name='F'},
- Xs = #c_var{name='Xs'},
- X = #c_var{name='X'},
- B = #c_var{name='B'},
- Err1 = #c_tuple{es=[#c_literal{val='case_clause'}, X]},
- CC1 = #c_clause{pats=[#c_literal{val=true}], guard=#c_literal{val=true},
- body=#c_cons{anno=[compiler_generated], hd=X, tl=Xs}},
- CC2 = #c_clause{pats=[#c_literal{val=false}], guard=#c_literal{val=true},
- body=Xs},
- CC3 = #c_clause{pats=[X], guard=#c_literal{val=true},
- body=match_fail(Anno, Err1)},
- Case = #c_case{arg=B, clauses = [CC1, CC2, CC3]},
- C1 = #c_clause{pats=[#c_cons{hd=X, tl=Xs}], guard=#c_literal{val=true},
- body=#c_let{vars=[B],
- arg=#c_apply{anno=Anno, op=F, args=[X]},
- body=#c_let{vars=[Xs],
- arg=#c_apply{anno=Anno,
- op=Loop,
- args=[Xs]},
- body=Case}}},
- C2 = #c_clause{pats=[#c_literal{val=[]}],
- guard=#c_call{module=#c_literal{val=erlang},
- name=#c_literal{val=is_function},
- args=[F, #c_literal{val=1}]},
- body=#c_literal{val=[]}},
- Err2 = #c_tuple{es=[#c_literal{val='function_clause'}, F, Xs]},
- C3 = #c_clause{pats=[Xs], guard=#c_literal{val=true},
- body=match_fail([{function_name,{'lists^filter',1}}|Anno], Err2)},
- Fun = #c_fun{vars=[Xs],
- body=#c_case{arg=Xs, clauses=[C1, C2, C3]}},
- L = #c_var{name='L'},
- expr(#c_let{vars=[F, L], arg=#c_values{es=[Arg1, Arg2]},
- body=#c_letrec{defs=[{Loop,Fun}],
- body=#c_apply{anno=Anno, op=Loop, args=[L]}}},
- Sub);
-call_1(#c_call{anno=Anno}, lists, foldl, [Arg1,Arg2,Arg3], Sub) ->
- Loop = #c_var{name={'lists^foldl',2}},
- F = #c_var{name='F'},
- Xs = #c_var{name='Xs'},
- X = #c_var{name='X'},
- A = #c_var{name='A'},
- C1 = #c_clause{pats=[#c_cons{hd=X, tl=Xs}], guard=#c_literal{val=true},
- body=#c_apply{anno=Anno,
- op=Loop,
- args=[Xs, #c_apply{anno=Anno,
- op=F,
- args=[X, A]}]}},
- C2 = #c_clause{pats=[#c_literal{val=[]}],
- guard=#c_call{module=#c_literal{val=erlang},
- name=#c_literal{val=is_function},
- args=[F, #c_literal{val=2}]},
- body=A},
- Err = #c_tuple{es=[#c_literal{val='function_clause'}, F, A, Xs]},
- C3 = #c_clause{pats=[Xs], guard=#c_literal{val=true},
- body=match_fail([{function_name,{'lists^foldl',2}}|Anno], Err)},
- Fun = #c_fun{vars=[Xs, A],
- body=#c_case{arg=Xs, clauses=[C1, C2, C3]}},
- L = #c_var{name='L'},
- expr(#c_let{vars=[F, A, L], arg=#c_values{es=[Arg1, Arg2, Arg3]},
- body=#c_letrec{defs=[{Loop,Fun}],
- body=#c_apply{anno=Anno, op=Loop, args=[L, A]}}},
- Sub);
-call_1(#c_call{anno=Anno}, lists, foldr, [Arg1,Arg2,Arg3], Sub) ->
- Loop = #c_var{name={'lists^foldr',2}},
- F = #c_var{name='F'},
- Xs = #c_var{name='Xs'},
- X = #c_var{name='X'},
- A = #c_var{name='A'},
- C1 = #c_clause{pats=[#c_cons{hd=X, tl=Xs}], guard=#c_literal{val=true},
- body=#c_apply{anno=Anno,
- op=F,
- args=[X, #c_apply{anno=Anno,
- op=Loop,
- args=[Xs, A]}]}},
- C2 = #c_clause{pats=[#c_literal{val=[]}],
- guard=#c_call{module=#c_literal{val=erlang},
- name=#c_literal{val=is_function},
- args=[F, #c_literal{val=2}]},
- body=A},
- Err = #c_tuple{es=[#c_literal{val='function_clause'}, F, A, Xs]},
- C3 = #c_clause{pats=[Xs], guard=#c_literal{val=true},
- body=match_fail([{function_name,{'lists^foldr',2}}|Anno], Err)},
- Fun = #c_fun{vars=[Xs, A],
- body=#c_case{arg=Xs, clauses=[C1, C2, C3]}},
- L = #c_var{name='L'},
- expr(#c_let{vars=[F, A, L], arg=#c_values{es=[Arg1, Arg2, Arg3]},
- body=#c_letrec{defs=[{Loop,Fun}],
- body=#c_apply{anno=Anno, op=Loop, args=[L, A]}}},
- Sub);
-call_1(#c_call{anno=Anno}, lists, mapfoldl, [Arg1,Arg2,Arg3], Sub) ->
- Loop = #c_var{name={'lists^mapfoldl',2}},
- F = #c_var{name='F'},
- Xs = #c_var{name='Xs'},
- X = #c_var{name='X'},
- Avar = #c_var{name='A'},
- Match =
- fun (A, P, E) ->
- C1 = #c_clause{pats=[P], guard=#c_literal{val=true}, body=E},
- Err = #c_tuple{es=[#c_literal{val='badmatch'}, X]},
- C2 = #c_clause{pats=[X], guard=#c_literal{val=true},
- body=match_fail(Anno, Err)},
- #c_case{arg=A, clauses=[C1, C2]}
- end,
- C1 = #c_clause{pats=[#c_cons{hd=X, tl=Xs}], guard=#c_literal{val=true},
- body=Match(#c_apply{anno=Anno, op=F, args=[X, Avar]},
- #c_tuple{es=[X, Avar]},
-%%% Tuple passing version
- Match(#c_apply{anno=Anno,
- op=Loop,
- args=[Xs, Avar]},
- #c_tuple{es=[Xs, Avar]},
- #c_tuple{anno=[compiler_generated],
- es=[#c_cons{anno=[compiler_generated],
- hd=X, tl=Xs},
- Avar]})
-%%% Multiple-value version
-%%% #c_let{vars=[Xs,A],
-%%% %% The tuple here will be optimised
-%%% %% away later; no worries.
-%%% arg=#c_apply{op=Loop, args=[Xs, A]},
-%%% body=#c_values{es=[#c_cons{hd=X, tl=Xs},
-%%% A]}}
- )},
- C2 = #c_clause{pats=[#c_literal{val=[]}],
- guard=#c_call{module=#c_literal{val=erlang},
- name=#c_literal{val=is_function},
- args=[F, #c_literal{val=2}]},
-%%% Tuple passing version
- body=#c_tuple{anno=[compiler_generated],
- es=[#c_literal{val=[]}, Avar]}},
-%%% Multiple-value version
-%%% body=#c_values{es=[#c_literal{val=[]}, A]}},
- Err = #c_tuple{es=[#c_literal{val='function_clause'}, F, Avar, Xs]},
- C3 = #c_clause{pats=[Xs], guard=#c_literal{val=true},
- body=match_fail([{function_name,{'lists^mapfoldl',2}}|Anno], Err)},
- Fun = #c_fun{vars=[Xs, Avar],
- body=#c_case{arg=Xs, clauses=[C1, C2, C3]}},
- L = #c_var{name='L'},
- expr(#c_let{vars=[F, Avar, L], arg=#c_values{es=[Arg1, Arg2, Arg3]},
- body=#c_letrec{defs=[{Loop,Fun}],
-%%% Tuple passing version
- body=#c_apply{anno=Anno,
- op=Loop,
- args=[L, Avar]}}},
-%%% Multiple-value version
-%%% body=#c_let{vars=[Xs, A],
-%%% arg=#c_apply{op=Loop,
-%%% args=[L, A]},
-%%% body=#c_tuple{es=[Xs, A]}}}},
- Sub);
-call_1(#c_call{anno=Anno}, lists, mapfoldr, [Arg1,Arg2,Arg3], Sub) ->
- Loop = #c_var{name={'lists^mapfoldr',2}},
- F = #c_var{name='F'},
- Xs = #c_var{name='Xs'},
- X = #c_var{name='X'},
- Avar = #c_var{name='A'},
- Match =
- fun (A, P, E) ->
- C1 = #c_clause{pats=[P], guard=#c_literal{val=true}, body=E},
- Err = #c_tuple{es=[#c_literal{val='badmatch'}, X]},
- C2 = #c_clause{pats=[X], guard=#c_literal{val=true},
- body=match_fail(Anno, Err)},
- #c_case{arg=A, clauses=[C1, C2]}
- end,
- C1 = #c_clause{pats=[#c_cons{hd=X, tl=Xs}], guard=#c_literal{val=true},
-%%% Tuple passing version
- body=Match(#c_apply{anno=Anno,
- op=Loop,
- args=[Xs, Avar]},
- #c_tuple{es=[Xs, Avar]},
- Match(#c_apply{anno=Anno, op=F, args=[X, Avar]},
- #c_tuple{es=[X, Avar]},
- #c_tuple{anno=[compiler_generated],
- es=[#c_cons{anno=[compiler_generated],
- hd=X, tl=Xs}, Avar]}))
-%%% Multiple-value version
-%%% body=#c_let{vars=[Xs,A],
-%%% %% The tuple will be optimised away
-%%% arg=#c_apply{op=Loop, args=[Xs, A]},
-%%% body=Match(#c_apply{op=F, args=[X, A]},
-%%% #c_tuple{es=[X, A]},
-%%% #c_values{es=[#c_cons{hd=X, tl=Xs},
-%%% A]})}
- },
- C2 = #c_clause{pats=[#c_literal{val=[]}],
- guard=#c_call{module=#c_literal{val=erlang},
- name=#c_literal{val=is_function},
- args=[F, #c_literal{val=2}]},
-%%% Tuple passing version
- body=#c_tuple{anno=[compiler_generated],
- es=[#c_literal{val=[]}, Avar]}},
-%%% Multiple-value version
-%%% body=#c_values{es=[#c_literal{val=[]}, A]}},
- Err = #c_tuple{es=[#c_literal{val='function_clause'}, F, Avar, Xs]},
- C3 = #c_clause{pats=[Xs], guard=#c_literal{val=true},
- body=match_fail([{function_name,{'lists^mapfoldr',2}}|Anno], Err)},
- Fun = #c_fun{vars=[Xs, Avar],
- body=#c_case{arg=Xs, clauses=[C1, C2, C3]}},
- L = #c_var{name='L'},
- expr(#c_let{vars=[F, Avar, L], arg=#c_values{es=[Arg1, Arg2, Arg3]},
- body=#c_letrec{defs=[{Loop,Fun}],
-%%% Tuple passing version
- body=#c_apply{anno=Anno,
- op=Loop,
- args=[L, Avar]}}},
-%%% Multiple-value version
-%%% body=#c_let{vars=[Xs, A],
-%%% arg=#c_apply{op=Loop,
-%%% args=[L, A]},
-%%% body=#c_tuple{es=[Xs, A]}}}},
- Sub);
-call_1(#c_call{module=M, name=N}=Call, _, _, As, Sub) ->
- call_0(Call, M, N, As, Sub).
-
-match_fail(Anno, Arg) ->
- #c_primop{anno=Anno,
- name=#c_literal{val='match_fail'},
- args=[Arg]}.
-
%% fold_call(Call, Mod, Name, Args, Sub) -> Expr.
%% Try to safely evaluate the call. Just try to evaluate arguments,
%% do the call and convert return values to literals. If this
@@ -1065,29 +770,33 @@ fold_call_1(Call, Mod, Name, Args, Sub) ->
true -> fold_call_2(Call, Mod, Name, Args, Sub)
end.
-fold_call_2(Call, Module, Name, Args0, Sub) ->
- try
- Args = [core_lib:literal_value(A) || A <- Args0],
- try apply(Module, Name, Args) of
- Val ->
- case cerl:is_literal_term(Val) of
- true ->
- #c_literal{val=Val};
- false ->
- %% Successful evaluation, but it was not
- %% possible to express the computed value as a literal.
- Call
- end
- catch
- error:Reason ->
- %% Evaluation of the function failed. Warn and replace
- %% the call with a call to erlang:error/1.
- eval_failure(Call, Reason)
- end
+fold_call_2(Call, Module, Name, Args, Sub) ->
+ case all(fun cerl:is_literal/1, Args) of
+ true ->
+ %% All arguments are literals.
+ fold_lit_args(Call, Module, Name, Args);
+ false ->
+ %% At least one non-literal argument.
+ fold_non_lit_args(Call, Module, Name, Args, Sub)
+ end.
+
+fold_lit_args(Call, Module, Name, Args0) ->
+ Args = [cerl:concrete(A) || A <- Args0],
+ try apply(Module, Name, Args) of
+ Val ->
+ case cerl:is_literal_term(Val) of
+ true ->
+ cerl:ann_abstract(cerl:get_ann(Call), Val);
+ false ->
+ %% Successful evaluation, but it was not possible
+ %% to express the computed value as a literal.
+ Call
+ end
catch
- error:_ ->
- %% There was at least one non-literal argument.
- fold_non_lit_args(Call, Module, Name, Args0, Sub)
+ error:Reason ->
+ %% Evaluation of the function failed. Warn and replace
+ %% the call with a call to erlang:error/1.
+ eval_failure(Call, Reason)
end.
%% fold_non_lit_args(Call, Module, Name, Args, Sub) -> Expr.
@@ -1126,41 +835,53 @@ fold_non_lit_args(Call, _, _, _, _) -> Call.
%% Evaluate a relational operation using type information.
eval_rel_op(Call, Op, [#c_var{name=V},#c_var{name=V}], _) ->
Bool = erlang:Op(same, same),
- #c_literal{anno=core_lib:get_anno(Call),val=Bool};
-eval_rel_op(Call, '=:=', [#c_var{name=V}=Var,#c_literal{val=true}], Sub) ->
+ #c_literal{anno=cerl:get_ann(Call),val=Bool};
+eval_rel_op(Call, '=:=', [Term,#c_literal{val=true}], Sub) ->
%% BoolVar =:= true ==> BoolVar
- case is_boolean_type(V, Sub) of
- true -> Var;
- false -> Call
+ case is_boolean_type(Term, Sub) of
+ yes -> Term;
+ maybe -> Call;
+ no -> #c_literal{val=false}
end;
-eval_rel_op(Call, '==', Ops, _Sub) ->
- case is_exact_eq_ok(Ops) of
+eval_rel_op(Call, '==', Ops, Sub) ->
+ case is_exact_eq_ok(Ops, Sub) of
true ->
- Name = #c_literal{anno=core_lib:get_anno(Call),val='=:='},
+ Name = #c_literal{anno=cerl:get_ann(Call),val='=:='},
Call#c_call{name=Name};
false ->
Call
end;
-eval_rel_op(Call, '/=', Ops, _Sub) ->
- case is_exact_eq_ok(Ops) of
+eval_rel_op(Call, '/=', Ops, Sub) ->
+ case is_exact_eq_ok(Ops, Sub) of
true ->
- Name = #c_literal{anno=core_lib:get_anno(Call),val='=/='},
+ Name = #c_literal{anno=cerl:get_ann(Call),val='=/='},
Call#c_call{name=Name};
false ->
Call
end;
eval_rel_op(Call, _, _, _) -> Call.
-is_exact_eq_ok([#c_literal{val=Lit}|_]) ->
+is_exact_eq_ok([A,B]=L, Sub) ->
+ case is_int_type(A, Sub) =:= yes andalso is_int_type(B, Sub) =:= yes of
+ true -> true;
+ false -> is_exact_eq_ok_1(L)
+ end.
+
+is_exact_eq_ok_1([#c_literal{val=Lit}|_]) ->
is_non_numeric(Lit);
-is_exact_eq_ok([_|T]) ->
- is_exact_eq_ok(T);
-is_exact_eq_ok([]) -> false.
+is_exact_eq_ok_1([_|T]) ->
+ is_exact_eq_ok_1(T);
+is_exact_eq_ok_1([]) -> false.
is_non_numeric([H|T]) ->
is_non_numeric(H) andalso is_non_numeric(T);
is_non_numeric(Tuple) when is_tuple(Tuple) ->
is_non_numeric_tuple(Tuple, tuple_size(Tuple));
+is_non_numeric(Map) when is_map(Map) ->
+ %% Note that 17.x and 18.x compare keys in different ways.
+ %% Be very conservative -- require that both keys and values
+ %% are non-numeric.
+ is_non_numeric(maps:to_list(Map));
is_non_numeric(Num) when is_number(Num) ->
false;
is_non_numeric(_) -> true.
@@ -1174,40 +895,31 @@ is_non_numeric_tuple(_Tuple, 0) -> true.
%% there must be at least one non-literal argument (i.e.
%% there is no need to handle the case that all argments
%% are literal).
-eval_bool_op(Call, 'and', [#c_literal{val=true},#c_var{name=V}=Res], Sub) ->
- case is_boolean_type(V, Sub) of
- true -> Res;
- false-> Call
- end;
-eval_bool_op(Call, 'and', [#c_var{name=V}=Res,#c_literal{val=true}], Sub) ->
- case is_boolean_type(V, Sub) of
- true -> Res;
- false-> Call
- end;
-eval_bool_op(Call, 'and', [#c_literal{val=false}=Res,#c_var{name=V}], Sub) ->
- case is_boolean_type(V, Sub) of
- true -> Res;
- false-> Call
- end;
-eval_bool_op(Call, 'and', [#c_var{name=V},#c_literal{val=false}=Res], Sub) ->
- case is_boolean_type(V, Sub) of
- true -> Res;
- false-> Call
- end;
+
+eval_bool_op(Call, 'and', [#c_literal{val=true},Term], Sub) ->
+ eval_bool_op_1(Call, Term, Term, Sub);
+eval_bool_op(Call, 'and', [Term,#c_literal{val=true}], Sub) ->
+ eval_bool_op_1(Call, Term, Term, Sub);
+eval_bool_op(Call, 'and', [#c_literal{val=false}=Res,Term], Sub) ->
+ eval_bool_op_1(Call, Res, Term, Sub);
+eval_bool_op(Call, 'and', [Term,#c_literal{val=false}=Res], Sub) ->
+ eval_bool_op_1(Call, Res, Term, Sub);
eval_bool_op(Call, _, _, _) -> Call.
+eval_bool_op_1(Call, Res, Term, Sub) ->
+ case is_boolean_type(Term, Sub) of
+ yes -> Res;
+ no -> eval_failure(Call, badarg);
+ maybe -> Call
+ end.
+
%% Evaluate is_boolean/1 using type information.
-eval_is_boolean(Call, #c_var{name=V}, Sub) ->
- case is_boolean_type(V, Sub) of
- true -> #c_literal{val=true};
- false -> Call
- end;
-eval_is_boolean(_, #c_cons{}, _) ->
- #c_literal{val=false};
-eval_is_boolean(_, #c_tuple{}, _) ->
- #c_literal{val=false};
-eval_is_boolean(Call, _, _) ->
- Call.
+eval_is_boolean(Call, Term, Sub) ->
+ case is_boolean_type(Term, Sub) of
+ no -> #c_literal{val=false};
+ yes -> #c_literal{val=true};
+ maybe -> Call
+ end.
%% eval_length(Call, List) -> Val.
%% Evaluates the length for the prefix of List which has a known
@@ -1257,33 +969,33 @@ eval_append(Call, X, Y) ->
%% Evaluates element/2 if the position Pos is a literal and
%% the shape of the tuple Tuple is known.
%%
-eval_element(Call, #c_literal{val=Pos}, #c_tuple{es=Es}, _Types) when is_integer(Pos) ->
- if
- 1 =< Pos, Pos =< length(Es) ->
- lists:nth(Pos, Es);
- true ->
- eval_failure(Call, badarg)
- end;
-eval_element(Call, #c_literal{val=Pos}, #c_var{name=V}, Types)
+eval_element(Call, #c_literal{val=Pos}, Tuple, Types)
when is_integer(Pos) ->
- case orddict:find(V, Types#sub.t) of
- {ok,#c_tuple{es=Elements}} ->
+ case get_type(Tuple, Types) of
+ none ->
+ Call;
+ Type ->
+ Es = case cerl:is_c_tuple(Type) of
+ false -> [];
+ true -> cerl:tuple_es(Type)
+ end,
if
- 1 =< Pos, Pos =< length(Elements) ->
- case lists:nth(Pos, Elements) of
- #c_alias{var=Alias} -> Alias;
- Res -> Res
+ 1 =< Pos, Pos =< length(Es) ->
+ El = lists:nth(Pos, Es),
+ try
+ cerl:set_ann(pat_to_expr(El), [compiler_generated])
+ catch
+ throw:impossible ->
+ Call
end;
true ->
+ %% Index outside tuple or not a tuple.
eval_failure(Call, badarg)
- end;
- {ok,_} ->
- eval_failure(Call, badarg);
- error ->
- Call
+ end
end;
-eval_element(Call, Pos, Tuple, _Types) ->
- case is_not_integer(Pos) orelse is_not_tuple(Tuple) of
+eval_element(Call, Pos, Tuple, Sub) ->
+ case is_int_type(Pos, Sub) =:= no orelse
+ is_tuple_type(Tuple, Sub) =:= no of
true ->
eval_failure(Call, badarg);
false ->
@@ -1293,56 +1005,55 @@ eval_element(Call, Pos, Tuple, _Types) ->
%% eval_is_record(Call, Var, Tag, Size, Types) -> Val.
%% Evaluates is_record/3 using type information.
%%
-eval_is_record(Call, #c_var{name=V}, #c_literal{val=NeededTag}=Lit,
+eval_is_record(Call, Term, #c_literal{val=NeededTag},
#c_literal{val=Size}, Types) ->
- case orddict:find(V, Types#sub.t) of
- {ok,#c_tuple{es=[#c_literal{val=Tag}|_]=Es}} ->
- Lit#c_literal{val=Tag =:= NeededTag andalso
- length(Es) =:= Size};
- _ ->
- Call
+ case get_type(Term, Types) of
+ none ->
+ Call;
+ Type ->
+ Es = case cerl:is_c_tuple(Type) of
+ false -> [];
+ true -> cerl:tuple_es(Type)
+ end,
+ case Es of
+ [#c_literal{val=Tag}|_] ->
+ Bool = Tag =:= NeededTag andalso
+ length(Es) =:= Size,
+ #c_literal{val=Bool};
+ _ ->
+ #c_literal{val=false}
+ end
end;
eval_is_record(Call, _, _, _, _) -> Call.
-%% is_not_integer(Core) -> true | false.
-%% Returns true if Core is definitely not an integer.
-
-is_not_integer(#c_literal{val=Val}) when not is_integer(Val) -> true;
-is_not_integer(#c_tuple{}) -> true;
-is_not_integer(#c_cons{}) -> true;
-is_not_integer(_) -> false.
-
-%% is_not_tuple(Core) -> true | false.
-%% Returns true if Core is definitely not a tuple.
-
-is_not_tuple(#c_literal{val=Val}) when not is_tuple(Val) -> true;
-is_not_tuple(#c_cons{}) -> true;
-is_not_tuple(_) -> false.
-
%% eval_setelement(Call, Pos, Tuple, NewVal) -> Core.
%% Evaluates setelement/3 if position Pos is an integer
-%% the shape of the tuple Tuple is known.
+%% and the shape of the tuple Tuple is known.
%%
-eval_setelement(Call, Pos, Tuple, NewVal) ->
- try
- eval_setelement_1(Pos, Tuple, NewVal)
- catch
- error:_ ->
- Call
- end.
-
-eval_setelement_1(#c_literal{val=Pos}, #c_tuple{anno=A,es=Es}, NewVal)
- when is_integer(Pos) ->
- ann_c_tuple(A, eval_setelement_2(Pos, Es, NewVal));
-eval_setelement_1(#c_literal{val=Pos}, #c_literal{anno=A,val=Es0}, NewVal)
+eval_setelement(Call, #c_literal{val=Pos}, Tuple, NewVal)
when is_integer(Pos) ->
- Es = [#c_literal{anno=A,val=E} || E <- tuple_to_list(Es0)],
- ann_c_tuple(A, eval_setelement_2(Pos, Es, NewVal)).
+ case cerl:is_data(Tuple) of
+ false ->
+ Call;
+ true ->
+ Es0 = case cerl:is_c_tuple(Tuple) of
+ false -> [];
+ true -> cerl:tuple_es(Tuple)
+ end,
+ if
+ 1 =< Pos, Pos =< length(Es0) ->
+ Es = eval_setelement_1(Pos, Es0, NewVal),
+ cerl:update_c_tuple(Tuple, Es);
+ true ->
+ eval_failure(Call, badarg)
+ end
+ end;
+eval_setelement(Call, _, _, _) -> Call.
-eval_setelement_2(1, [_|T], NewVal) ->
+eval_setelement_1(1, [_|T], NewVal) ->
[NewVal|T];
-eval_setelement_2(Pos, [H|T], NewVal) when Pos > 1 ->
- [H|eval_setelement_2(Pos-1, T, NewVal)].
+eval_setelement_1(Pos, [H|T], NewVal) when Pos > 1 ->
+ [H|eval_setelement_1(Pos-1, T, NewVal)].
%% eval_failure(Call, Reason) -> Core.
%% Warn for a call that will fail and replace the call with
@@ -1378,15 +1089,28 @@ is_atom_or_var(_) -> false.
%% clause(Clause, Cepxr, Context, Sub) -> Clause.
-clause(#c_clause{pats=Ps0,guard=G0,body=B0}=Cl, Cexpr, Ctxt, Sub0) ->
- {Ps1,Sub1} = pattern_list(Ps0, Sub0),
+clause(#c_clause{pats=Ps0}=Cl, Cexpr, Ctxt, Sub0) ->
+ try pattern_list(Ps0, Sub0) of
+ {Ps1,Sub1} ->
+ clause_1(Cl, Ps1, Cexpr, Ctxt, Sub1)
+ catch
+ nomatch ->
+ Cl#c_clause{anno=[compiler_generated],
+ guard=#c_literal{val=false}}
+ end.
+
+clause_1(#c_clause{guard=G0,body=B0}=Cl, Ps1, Cexpr, Ctxt, Sub1) ->
Sub2 = update_types(Cexpr, Ps1, Sub1),
- GSub = case {Cexpr,Ps1} of
- {#c_var{name='_'},_} ->
+ GSub = case {Cexpr,Ps1,G0} of
+ {_,_,#c_literal{}} ->
+ %% No need for substitution tricks when the guard
+ %% does not contain any variables.
+ Sub2;
+ {#c_var{name='_'},_,_} ->
%% In a 'receive', Cexpr is the variable '_', which represents the
%% message being matched. We must NOT do any extra substiutions.
Sub2;
- {#c_var{},[#c_var{}=Var]} ->
+ {#c_var{},[#c_var{}=Var],_} ->
%% The idea here is to optimize expressions such as
%%
%% case A of A -> ...
@@ -1420,22 +1144,34 @@ clause(#c_clause{pats=Ps0,guard=G0,body=B0}=Cl, Cexpr, Ctxt, Sub0) ->
%% the unsubstituted variables and values.
let_substs(Vs0, As0, Sub0) ->
- {Vs1,Sub1} = pattern_list(Vs0, Sub0),
+ {Vs1,Sub1} = var_list(Vs0, Sub0),
{Vs2,As1,Ss} = let_substs_1(Vs1, As0, Sub1),
- Sub2 = scope_add([V || #c_var{name=V} <- Vs2], Sub1),
+ Sub2 = sub_add_scope([V || #c_var{name=V} <- Vs2], Sub1),
{Vs2,As1,
- foldl(fun ({V,S}, Sub) -> sub_set_name(V, S, Sub) end, Sub2, Ss)}.
+ foldl(fun ({V,S}, Sub) -> sub_set_name(V, S, Sub) end, Sub2, Ss)}.
let_substs_1(Vs, #c_values{es=As}, Sub) ->
let_subst_list(Vs, As, Sub);
let_substs_1([V], A, Sub) -> let_subst_list([V], [A], Sub);
let_substs_1(Vs, A, _) -> {Vs,A,[]}.
-let_subst_list([V|Vs0], [A|As0], Sub) ->
+let_subst_list([V|Vs0], [A0|As0], Sub) ->
{Vs1,As1,Ss} = let_subst_list(Vs0, As0, Sub),
- case is_subst(A) of
- true -> {Vs1,As1,sub_subst_var(V, A, Sub) ++ Ss};
- false -> {[V|Vs1],[A|As1],Ss}
+ case is_subst(A0) of
+ true ->
+ A = case is_compiler_generated(V) andalso
+ not is_compiler_generated(A0) of
+ true ->
+ %% Propagate the 'compiler_generated' annotation
+ %% along with the value.
+ Ann = [compiler_generated|cerl:get_ann(A0)],
+ cerl:set_ann(A0, Ann);
+ false ->
+ A0
+ end,
+ {Vs1,As1,sub_subst_var(V, A, Sub) ++ Ss};
+ false ->
+ {[V|Vs1],[A0|As1],Ss}
end;
let_subst_list([], [], _) -> {[],[],[]}.
@@ -1452,14 +1188,14 @@ let_subst_list([], [], _) -> {[],[],[]}.
%%pattern(Pat, Sub) -> pattern(Pat, Sub, Sub).
-pattern(#c_var{name=V0}=Pat, Isub, Osub) ->
+pattern(#c_var{}=Pat, Isub, Osub) ->
case sub_is_val(Pat, Isub) of
true ->
V1 = make_var_name(),
Pat1 = #c_var{name=V1},
- {Pat1,sub_set_var(Pat, Pat1, scope_add([V1], Osub))};
+ {Pat1,sub_set_var(Pat, Pat1, sub_add_scope([V1], Osub))};
false ->
- {Pat,sub_del_var(Pat, scope_add([V0], Osub))}
+ {Pat,sub_del_var(Pat, Osub)}
end;
pattern(#c_literal{}=Pat, _, Osub) -> {Pat,Osub};
pattern(#c_cons{anno=Anno,hd=H0,tl=T0}, Isub, Osub0) ->
@@ -1469,6 +1205,9 @@ pattern(#c_cons{anno=Anno,hd=H0,tl=T0}, Isub, Osub0) ->
pattern(#c_tuple{anno=Anno,es=Es0}, Isub, Osub0) ->
{Es1,Osub1} = pattern_list(Es0, Isub, Osub0),
{ann_c_tuple(Anno, Es1),Osub1};
+pattern(#c_map{anno=Anno,es=Es0}=Map, Isub, Osub0) ->
+ {Es1,Osub1} = map_pair_pattern_list(Es0, Isub, Osub0),
+ {Map#c_map{anno=Anno,es=Es1},Osub1};
pattern(#c_binary{segments=V0}=Pat, Isub, Osub0) ->
{V1,Osub1} = bin_pattern_list(V0, Isub, Osub0),
{Pat#c_binary{segments=V1},Osub1};
@@ -1478,24 +1217,145 @@ pattern(#c_alias{var=V0,pat=P0}=Pat, Isub, Osub0) ->
Osub = update_types(V1, [P1], Osub2),
{Pat#c_alias{var=V1,pat=P1},Osub}.
+map_pair_pattern_list(Ps0, Isub, Osub0) ->
+ {Ps,{_,Osub}} = mapfoldl(fun map_pair_pattern/2, {Isub,Osub0}, Ps0),
+ {Ps,Osub}.
+
+map_pair_pattern(#c_map_pair{op=#c_literal{val=exact},key=K0,val=V0}=Pair,{Isub,Osub0}) ->
+ K = expr(K0, Isub),
+ {V,Osub} = pattern(V0,Isub,Osub0),
+ {Pair#c_map_pair{key=K,val=V},{Isub,Osub}}.
+
bin_pattern_list(Ps0, Isub, Osub0) ->
{Ps,{_,Osub}} = mapfoldl(fun bin_pattern/2, {Isub,Osub0}, Ps0),
{Ps,Osub}.
-bin_pattern(#c_bitstr{val=E0,size=Size0}=Pat, {Isub0,Osub0}) ->
+bin_pattern(#c_bitstr{val=E0,size=Size0}=Pat0, {Isub0,Osub0}) ->
Size1 = expr(Size0, Isub0),
{E1,Osub} = pattern(E0, Isub0, Osub0),
Isub = case E0 of
#c_var{} -> sub_set_var(E0, E1, Isub0);
_ -> Isub0
end,
- {Pat#c_bitstr{val=E1,size=Size1},{Isub,Osub}}.
+ Pat = Pat0#c_bitstr{val=E1,size=Size1},
+ bin_pat_warn(Pat),
+ {Pat,{Isub,Osub}}.
pattern_list(Ps, Sub) -> pattern_list(Ps, Sub, Sub).
pattern_list(Ps0, Isub, Osub0) ->
mapfoldl(fun (P, Osub) -> pattern(P, Isub, Osub) end, Osub0, Ps0).
+%% var_list([Var], InSub) -> {Pattern,OutSub}.
+%% Works like pattern_list/2 but only accept variables and is
+%% guaranteed not to throw an exception.
+
+var_list(Vs, Sub0) ->
+ mapfoldl(fun (#c_var{}=V, Sub) ->
+ pattern(V, Sub, Sub)
+ end, Sub0, Vs).
+
+
+%%%
+%%% Generate warnings for binary patterns that will not match.
+%%%
+
+bin_pat_warn(#c_bitstr{type=#c_literal{val=Type},
+ val=Val0,
+ size=#c_literal{val=Sz},
+ unit=#c_literal{val=Unit},
+ flags=Fl}=Pat) ->
+ case {Type,Sz} of
+ {_,_} when is_integer(Sz), Sz >= 0 -> ok;
+ {binary,all} -> ok;
+ {utf8,undefined} -> ok;
+ {utf16,undefined} -> ok;
+ {utf32,undefined} -> ok;
+ {_,_} ->
+ add_warning(Pat, {nomatch_bit_syntax_size,Sz}),
+ throw(nomatch)
+ end,
+ case {Type,Val0} of
+ {integer,#c_literal{val=Val}} when is_integer(Val) ->
+ Signedness = signedness(Fl),
+ TotalSz = Sz * Unit,
+ bit_pat_warn_int(Val, TotalSz, Signedness, Pat);
+ {float,#c_literal{val=Val}} when is_float(Val) ->
+ ok;
+ {utf8,#c_literal{val=Val}} when is_integer(Val) ->
+ bit_pat_warn_unicode(Val, Pat);
+ {utf16,#c_literal{val=Val}} when is_integer(Val) ->
+ bit_pat_warn_unicode(Val, Pat);
+ {utf32,#c_literal{val=Val}} when is_integer(Val) ->
+ bit_pat_warn_unicode(Val, Pat);
+ {_,#c_literal{val=Val}} ->
+ add_warning(Pat, {nomatch_bit_syntax_type,Val,Type}),
+ throw(nomatch);
+ {_,_} ->
+ ok
+ end;
+bin_pat_warn(#c_bitstr{type=#c_literal{val=Type},val=Val0,flags=Fl}=Pat) ->
+ %% Size is variable. Not much that we can check.
+ case {Type,Val0} of
+ {integer,#c_literal{val=Val}} when is_integer(Val) ->
+ case signedness(Fl) of
+ unsigned when Val < 0 ->
+ add_warning(Pat, {nomatch_bit_syntax_unsigned,Val}),
+ throw(nomatch);
+ _ ->
+ ok
+ end;
+ {float,#c_literal{val=Val}} when is_float(Val) ->
+ ok;
+ {_,#c_literal{val=Val}} ->
+ add_warning(Pat, {nomatch_bit_syntax_type,Val,Type}),
+ throw(nomatch);
+ {_,_} ->
+ ok
+ end.
+
+bit_pat_warn_int(Val, 0, signed, Pat) ->
+ if
+ Val =:= 0 ->
+ ok;
+ true ->
+ add_warning(Pat, {nomatch_bit_syntax_truncated,signed,Val,0}),
+ throw(nomatch)
+ end;
+bit_pat_warn_int(Val, Sz, signed, Pat) ->
+ if
+ Val < 0, Val bsr (Sz - 1) =/= -1 ->
+ add_warning(Pat, {nomatch_bit_syntax_truncated,signed,Val,Sz}),
+ throw(nomatch);
+ Val > 0, Val bsr (Sz - 1) =/= 0 ->
+ add_warning(Pat, {nomatch_bit_syntax_truncated,signed,Val,Sz}),
+ throw(nomatch);
+ true ->
+ ok
+ end;
+bit_pat_warn_int(Val, _Sz, unsigned, Pat) when Val < 0 ->
+ add_warning(Pat, {nomatch_bit_syntax_unsigned,Val}),
+ throw(nomatch);
+bit_pat_warn_int(Val, Sz, unsigned, Pat) ->
+ if
+ Val bsr Sz =:= 0 ->
+ ok;
+ true ->
+ add_warning(Pat, {nomatch_bit_syntax_truncated,unsigned,Val,Sz}),
+ throw(nomatch)
+ end.
+
+bit_pat_warn_unicode(U, _Pat) when 0 =< U, U =< 16#10FFFF ->
+ ok;
+bit_pat_warn_unicode(U, Pat) ->
+ add_warning(Pat, {nomatch_bit_syntax_unicode,U}),
+ throw(nomatch).
+
+signedness(#c_literal{val=Flags}) ->
+ [S] = [F || F <- Flags, F =:= signed orelse F =:= unsigned],
+ S.
+
+
%% is_subst(Expr) -> true | false.
%% Test whether an expression is a suitable substitution.
@@ -1515,6 +1375,7 @@ is_subst(_) -> false.
%% sub_del_var(Var, #sub{}) -> #sub{}.
%% sub_subst_var(Var, Value, #sub{}) -> [{Name,Value}].
%% sub_is_val(Var, #sub{}) -> boolean().
+%% sub_add_scope(#sub{}) -> #sub{}
%% sub_subst_scope(#sub{}) -> #sub{}
%%
%% We use the variable name as key so as not have problems with
@@ -1522,14 +1383,18 @@ is_subst(_) -> false.
%% chains so we never have to search more than once. Use orddict so
%% we know the format.
%%
-%% sub_subst_scope/1 adds dummy substitutions for all variables
-%% in the scope in order to force renaming if variables in the
-%% scope occurs as pattern variables.
+%% In addition to the list of substitutions, we also keep track of
+%% all variable currently live (the scope).
+%%
+%% sub_add_scope/2 adds variables to the scope. sub_subst_scope/1
+%% adds dummy substitutions for all variables in the scope in order
+%% to force renaming if variables in the scope occurs as pattern
+%% variables.
-sub_new() -> #sub{v=orddict:new(),s=gb_trees:empty(),t=[]}.
+sub_new() -> #sub{v=orddict:new(),s=cerl_sets:new(),t=#{}}.
sub_new(#sub{}=Sub) ->
- Sub#sub{v=orddict:new(),t=[]}.
+ Sub#sub{v=orddict:new(),t=#{}}.
sub_new_preserve_types(#sub{}=Sub) ->
Sub#sub{v=orddict:new()}.
@@ -1546,60 +1411,78 @@ sub_set_var(#c_var{name=V}, Val, Sub) ->
sub_set_name(V, Val, #sub{v=S,s=Scope,t=Tdb0}=Sub) ->
Tdb1 = kill_types(V, Tdb0),
Tdb = copy_type(V, Val, Tdb1),
- Sub#sub{v=orddict:store(V, Val, S),s=gb_sets:add(V, Scope),t=Tdb}.
-
-sub_del_var(#c_var{name=V}, #sub{v=S,t=Tdb}=Sub) ->
- Sub#sub{v=orddict:erase(V, S),t=kill_types(V, Tdb)}.
+ Sub#sub{v=orddict:store(V, Val, S),s=cerl_sets:add_element(V, Scope),t=Tdb}.
+
+sub_del_var(#c_var{name=V}, #sub{v=S,s=Scope,t=Tdb}=Sub) ->
+ %% Profiling shows that for programs with many record operations,
+ %% sub_del_var/2 is a bottleneck. Since the scope contains all
+ %% variables that are live, we know that V cannot be present in S
+ %% if it is not in the scope.
+ case cerl_sets:is_element(V, Scope) of
+ false ->
+ Sub#sub{s=cerl_sets:add_element(V, Scope)};
+ true ->
+ Sub#sub{v=orddict:erase(V, S),t=kill_types(V, Tdb)}
+ end.
sub_subst_var(#c_var{name=V}, Val, #sub{v=S0}) ->
%% Fold chained substitutions.
[{V,Val}] ++ [ {K,Val} || {K,#c_var{name=V1}} <- S0, V1 =:= V].
+sub_add_scope(Vs, #sub{s=Scope0}=Sub) ->
+ Scope = foldl(fun(V, S) when is_integer(V); is_atom(V) ->
+ cerl_sets:add_element(V, S)
+ end, Scope0, Vs),
+ Sub#sub{s=Scope}.
+
sub_subst_scope(#sub{v=S0,s=Scope}=Sub) ->
- S = [{-1,#c_var{name=Sv}} || Sv <- gb_sets:to_list(Scope)]++S0,
+ S = [{-1,#c_var{name=Sv}} || Sv <- cerl_sets:to_list(Scope)]++S0,
Sub#sub{v=S}.
-sub_is_val(#c_var{name=V}, #sub{v=S}) ->
- v_is_value(V, S).
-
-v_is_value(Var, Sub) ->
- any(fun ({_,#c_var{name=Val}}) when Val =:= Var -> true;
- (_) -> false
- end, Sub).
-
-%% clauses(E, [Clause], TopLevel, Context, Sub) -> [Clause].
-%% Trim the clauses by removing all clauses AFTER the first one which
-%% is guaranteed to match. Also remove all trivially false clauses.
-
-clauses(E, Cs0, TopLevel, Ctxt, Sub) ->
- Cs = clauses_1(E, Cs0, Ctxt, Sub),
-
- %% Here we want to warn if no clauses whatsoever will ever
- %% match, because that is probably a mistake.
- case all(fun is_compiler_generated/1, Cs) andalso
- any(fun(C) -> not is_compiler_generated(C) end, Cs0) of
+sub_is_val(#c_var{name=V}, #sub{v=S,s=Scope}) ->
+ %% When the bottleneck in sub_del_var/2 was eliminated, this
+ %% became the new bottleneck. Since the scope contains all
+ %% live variables, a variable V can only be the target for
+ %% a substitution if it is in the scope.
+ cerl_sets:is_element(V, Scope) andalso v_is_value(V, S).
+
+v_is_value(Var, [{_,#c_var{name=Var}}|_]) -> true;
+v_is_value(Var, [_|T]) -> v_is_value(Var, T);
+v_is_value(_, []) -> false.
+
+%% warn_no_clause_match(CaseOrig, CaseOpt) -> ok
+%% Generate a warning if none of the user-specified clauses
+%% will match.
+
+warn_no_clause_match(CaseOrig, CaseOpt) ->
+ OrigCs = cerl:case_clauses(CaseOrig),
+ OptCs = cerl:case_clauses(CaseOpt),
+ case any(fun(C) -> not is_compiler_generated(C) end, OrigCs) andalso
+ all(fun is_compiler_generated/1, OptCs) of
true ->
%% The original list of clauses did contain at least one
%% user-specified clause, but none of them will match.
%% That is probably a mistake.
- add_warning(TopLevel, no_clause_match);
+ add_warning(CaseOrig, no_clause_match);
false ->
%% Either there were user-specified clauses left in
%% the transformed clauses, or else none of the original
%% clauses were user-specified to begin with (as in 'andalso').
ok
- end,
+ end.
- Cs.
+%% clauses(E, [Clause], TopLevel, Context, Sub) -> [Clause].
+%% Trim the clauses by removing all clauses AFTER the first one which
+%% is guaranteed to match. Also remove all trivially false clauses.
-clauses_1(E, [C0|Cs], Ctxt, Sub) ->
+clauses(E, [C0|Cs], Ctxt, Sub, LitExpr) ->
#c_clause{pats=Ps,guard=G} = C1 = clause(C0, E, Ctxt, Sub),
%%ok = io:fwrite("~w: ~p~n", [?LINE,{E,Ps}]),
case {will_match(E, Ps),will_succeed(G)} of
{yes,yes} ->
- Line = get_line(core_lib:get_anno(C1)),
- case core_lib:is_literal(E) of
+ case LitExpr of
false ->
+ Line = get_line(cerl:get_ann(C1)),
shadow_warning(Cs, Line);
true ->
%% If the case expression is a literal,
@@ -1608,15 +1491,13 @@ clauses_1(E, [C0|Cs], Ctxt, Sub) ->
ok
end,
[C1]; %Skip the rest
- {no,_Suc} ->
- clauses_1(E, Cs, Ctxt, Sub); %Skip this clause
- {_Mat,no} ->
+ {_Mat,no} -> %Guard fails.
add_warning(C1, nomatch_guard),
- clauses_1(E, Cs, Ctxt, Sub); %Skip this clause
+ clauses(E, Cs, Ctxt, Sub, LitExpr); %Skip this clause
{_Mat,_Suc} ->
- [C1|clauses_1(E, Cs, Ctxt, Sub)]
+ [C1|clauses(E, Cs, Ctxt, Sub, LitExpr)]
end;
-clauses_1(_, [], _, _) -> [].
+clauses(_, [], _, _, _) -> [].
shadow_warning([C|Cs], none) ->
add_warning(C, nomatch_shadow),
@@ -1634,69 +1515,18 @@ will_succeed(#c_literal{val=true}) -> yes;
will_succeed(#c_literal{val=false}) -> no;
will_succeed(_Guard) -> maybe.
-%% will_match(Expr, [Pattern]) -> yes | maybe | no.
-%% Test if we know whether a match will succeed/fail or just don't
-%% know. Be conservative.
+%% will_match(Expr, [Pattern]) -> yes | maybe.
+%% We KNOW that this function is only used after optimizations
+%% in case_opt/4. Therefore clauses that can definitely not match
+%% have already been pruned.
will_match(#c_values{es=Es}, Ps) ->
- will_match_list(Es, Ps, yes);
+ will_match_1(cerl_clauses:match_list(Ps, Es));
will_match(E, [P]) ->
- will_match_1(E, P).
-
-will_match_1(_E, #c_var{}) -> yes; %Will always match
-will_match_1(E, #c_alias{pat=P}) -> %Pattern decides
- will_match_1(E, P);
-will_match_1(#c_var{}, _P) -> maybe;
-will_match_1(#c_tuple{es=Es}, #c_tuple{es=Ps}) ->
- will_match_list(Es, Ps, yes);
-will_match_1(#c_literal{val=Lit}, P) ->
- will_match_lit(Lit, P);
-will_match_1(_, _) -> maybe.
-
-will_match_list([E|Es], [P|Ps], M) ->
- case will_match_1(E, P) of
- yes -> will_match_list(Es, Ps, M);
- maybe -> will_match_list(Es, Ps, maybe);
- no -> no
- end;
-will_match_list([], [], M) -> M.
-
-will_match_lit(Cons, #c_cons{hd=Hp,tl=Tp}) ->
- case Cons of
- [H|T] ->
- case will_match_lit(H, Hp) of
- yes -> will_match_lit(T, Tp);
- Other -> Other
- end;
- _ ->
- no
- end;
-will_match_lit(Tuple, #c_tuple{es=Es}) ->
- case is_tuple(Tuple) andalso tuple_size(Tuple) =:= length(Es) of
- true -> will_match_lit_list(tuple_to_list(Tuple), Es);
- false -> no
- end;
-will_match_lit(Bin, #c_binary{}) ->
- case is_bitstring(Bin) of
- true -> maybe;
- false -> no
- end;
-will_match_lit(_, #c_var{}) ->
- yes;
-will_match_lit(Lit, #c_alias{pat=P}) ->
- will_match_lit(Lit, P);
-will_match_lit(Lit1, #c_literal{val=Lit2}) ->
- case Lit1 =:= Lit2 of
- true -> yes;
- false -> no
- end.
+ will_match_1(cerl_clauses:match(P, E)).
-will_match_lit_list([H|T], [P|Ps]) ->
- case will_match_lit(H, P) of
- yes -> will_match_lit_list(T, Ps);
- Other -> Other
- end;
-will_match_lit_list([], []) -> yes.
+will_match_1({false,_}) -> maybe;
+will_match_1({true,_}) -> yes.
%% opt_bool_case(CoreExpr) - CoreExpr'.
%% Do various optimizations to case statement that has a
@@ -1760,9 +1590,14 @@ opt_bool_clauses([#c_clause{pats=[#c_literal{val=Lit}],
true ->
%% This clause will match.
C = C0#c_clause{body=opt_bool_case(B)},
- case Lit of
- false -> [C|opt_bool_clauses(Cs, SeenT, true)];
- true -> [C|opt_bool_clauses(Cs, true, SeenF)]
+ case {Lit,SeenT,SeenF} of
+ {false,_,false} ->
+ [C|opt_bool_clauses(Cs, SeenT, true)];
+ {true,false,_} ->
+ [C|opt_bool_clauses(Cs, true, SeenF)];
+ _ ->
+ add_warning(C, nomatch_shadow),
+ opt_bool_clauses(Cs, SeenT, SeenF)
end
end;
opt_bool_clauses([#c_clause{pats=Ps,guard=#c_literal{val=true}}=C|Cs], SeenT, SeenF) ->
@@ -1881,7 +1716,7 @@ opt_bool_case_guard(#c_case{arg=Arg,clauses=Cs0}=Case) ->
Case;
true ->
Cs = opt_bool_case_guard(Arg, Cs0),
- Case#c_case{arg=#c_values{anno=core_lib:get_anno(Arg),es=[]},
+ Case#c_case{arg=#c_values{anno=cerl:get_ann(Arg),es=[]},
clauses=Cs}
end.
@@ -1895,165 +1730,373 @@ opt_bool_case_guard(Arg, [#c_clause{pats=[#c_literal{val=false}]}=Fc,Tc]) ->
%% last clause is guaranteed to match so if there is only one clause
%% with a pattern containing only variables then rewrite to a let.
-eval_case(#c_case{arg=#c_var{name=V},
- clauses=[#c_clause{pats=[P],guard=G,body=B}|_]}=Case,
- #sub{t=Tdb}=Sub) ->
- case orddict:find(V, Tdb) of
- {ok,Type} ->
- case {will_match_type(P, Type),will_succeed(G)} of
- {yes,yes} ->
- {Ps,Es} = remove_non_vars(P, Type),
- expr(#c_let{vars=Ps,arg=#c_values{es=Es},body=B},
- sub_new(Sub));
- {_,_} ->
- eval_case_1(Case, Sub)
- end;
- error -> eval_case_1(Case, Sub)
- end;
-eval_case(Case, Sub) -> eval_case_1(Case, Sub).
-
-eval_case_1(#c_case{arg=E,clauses=[#c_clause{pats=Ps,body=B}]}=Case, Sub) ->
- case is_var_pat(Ps) of
- true -> expr(#c_let{vars=Ps,arg=E,body=B}, sub_new(Sub));
- false -> eval_case_2(E, Ps, B, Case)
- end;
-eval_case_1(Case, _) -> Case.
-
-eval_case_2(E, [P], B, Case) ->
- %% Recall that there is only one clause and that it is guaranteed to match.
- %% If E and P are literals, they must be the same literal and the body
- %% can be used directly as there are no variables that need to be bound.
- %% Otherwise, P could be an alias meaning that two or more variables
- %% would be bound to E. We don't bother to optimize that case as it
- %% is rather uncommon.
- case core_lib:is_literal(E) andalso core_lib:is_literal(P) of
- false -> Case;
- true -> B
- end;
-eval_case_2(_, _, _, Case) -> Case.
-
-is_var_pat(Ps) ->
- all(fun (#c_var{}) -> true;
- (_Pat) -> false
- end, Ps).
-
-will_match_type(#c_tuple{es=Es}, #c_tuple{es=Ps}) ->
- will_match_list_type(Es, Ps);
-will_match_type(#c_literal{val=Atom}, #c_literal{val=Atom}) -> yes;
-will_match_type(#c_var{}, #c_var{}) -> yes;
-will_match_type(#c_var{}, #c_alias{}) -> yes;
-will_match_type(_, _) -> no.
-
-will_match_list_type([E|Es], [P|Ps]) ->
- case will_match_type(E, P) of
- yes -> will_match_list_type(Es, Ps);
- no -> no
- end;
-will_match_list_type([], []) -> yes;
-will_match_list_type(_, _) -> no. %Different length
-
-remove_non_vars(Ps0, Es0) ->
- {Ps,Es} = remove_non_vars(Ps0, Es0, [], []),
- {reverse(Ps),reverse(Es)}.
-
-remove_non_vars(#c_tuple{es=Ps}, #c_tuple{es=Es}, Pacc, Eacc) ->
- remove_non_vars_list(Ps, Es, Pacc, Eacc);
-remove_non_vars(#c_var{}=Var, #c_alias{var=Evar}, Pacc, Eacc) ->
- {[Var|Pacc],[Evar|Eacc]};
-remove_non_vars(#c_var{}=Var, #c_var{}=Evar, Pacc, Eacc) ->
- {[Var|Pacc],[Evar|Eacc]};
-remove_non_vars(P, E, Pacc, Eacc) ->
- true = core_lib:is_literal(P) andalso core_lib:is_literal(E), %Assertion.
- {Pacc,Eacc}.
-
-remove_non_vars_list([P|Ps], [E|Es], Pacc0, Eacc0) ->
- {Pacc,Eacc} = remove_non_vars(P, E, Pacc0, Eacc0),
- remove_non_vars_list(Ps, Es, Pacc, Eacc);
-remove_non_vars_list([], [], Pacc, Eacc) ->
- {Pacc,Eacc}.
+eval_case(#c_case{arg=E,clauses=[#c_clause{pats=Ps0,
+ guard=#c_literal{val=true},
+ body=B}]}=Case, Sub) ->
+ Es = case cerl:is_c_values(E) of
+ true -> cerl:values_es(E);
+ false -> [E]
+ end,
+ %% Consider:
+ %%
+ %% case SomeSideEffect() of
+ %% X=Y -> ...
+ %% end
+ %%
+ %% We must not rewrite it to:
+ %%
+ %% let <X,Y> = <SomeSideEffect(),SomeSideEffect()> in ...
+ %%
+ %% because SomeSideEffect() would be evaluated twice.
+ %%
+ %% Instead we must evaluate the case expression in an outer let
+ %% like this:
+ %%
+ %% let NewVar = SomeSideEffect() in
+ %% let <X,Y> = <NewVar,NewVar> in ...
+ %%
+ Vs = make_vars([], length(Es)),
+ case cerl_clauses:match_list(Ps0, Vs) of
+ {false,_} ->
+ %% This can only happen if the Core Erlang code is
+ %% handwritten or generated by another code generator
+ %% than v3_core. Assuming that the Core Erlang program
+ %% is correct, the clause will always match at run-time.
+ Case;
+ {true,Bs} ->
+ eval_case_warn(B),
+ {Ps,As} = unzip(Bs),
+ InnerLet = cerl:c_let(Ps, core_lib:make_values(As), B),
+ Let = cerl:c_let(Vs, E, InnerLet),
+ expr(Let, sub_new(Sub))
+ end;
+eval_case(Case, _) -> Case.
+
+eval_case_warn(#c_primop{anno=Anno,
+ name=#c_literal{val=match_fail},
+ args=[_]}=Core) ->
+ case keyfind(eval_failure, 1, Anno) of
+ false ->
+ ok;
+ {eval_failure,Reason} ->
+ %% Example: M = not_map, M#{k:=v}
+ add_warning(Core, {eval_failure,Reason})
+ end;
+eval_case_warn(_) -> ok.
%% case_opt(CaseArg, [Clause]) -> {CaseArg,[Clause]}.
-%% Try and optimise case by avoid building a tuple in
-%% the case expression. Instead of building a tuple
-%% in the case expression, combine the elements into
-%% multiple "values". If a clause refers to the tuple
-%% in the case expression (that was not built), introduce
-%% a let into the guard and/or body to build the tuple.
-%%
-%% case {Expr1,Expr2} of case <Expr1,Expr2> of
-%% {P1,P2} -> ... <P1,P2> -> ...
+%% Try and optimise a case by avoid building tuples or lists
+%% in the case expression. Instead combine the variable parts
+%% of the case expression to multiple "values". If a clause
+%% refers to the constructed term in the case expression (which
+%% was not built), introduce a let into the guard and/or body to
+%% build the term.
+%%
+%% case {ok,[Expr1,Expr2]} of case <Expr1,Expr2> of
+%% {ok,[P1,P2]} -> ... <P1,P2> -> ...
%% . ==> .
%% . .
%% . .
-%% Var -> <Var1,Var2> ->
-%% ... Var ... let <Var> = {Var1,Var2}
-%% in ... Var ...
+%% Var -> <Var1,Var2> ->
+%% ... Var ... let <Var> = {ok,[Var1,Var2]}
+%% in ... Var ...
%% . .
%% . .
%% . .
-%% end. end.
-%%
-case_opt(#c_tuple{anno=A,es=Es}, Cs0) ->
- Cs1 = case_opt_cs(Cs0, length(Es)),
- {core_lib:set_anno(core_lib:make_values(Es), A),Cs1};
-case_opt(Arg, Cs) -> {Arg,Cs}.
-
-case_opt_cs([#c_clause{pats=Ps0,guard=G,body=B}=C|Cs], Arity) ->
- case case_tuple_pat(Ps0, Arity) of
- {ok,Ps1,Avs} ->
- Flet = fun ({V,Pat}, Body) -> letify(V, Pat, Body) end,
- [C#c_clause{pats=Ps1,
- guard=foldl(Flet, G, Avs),
- body=foldl(Flet, B, Avs)}|case_opt_cs(Cs, Arity)];
- error -> %Can't match
- add_warning(C, nomatch_clause_type),
- case_opt_cs(Cs, Arity)
- end;
-case_opt_cs([], _) -> [].
-
-%% case_tuple_pat([Pattern], Arity) -> {ok,[Pattern],[{AliasVar,Pat}]} | error.
-
-case_tuple_pat([#c_tuple{es=Ps}], Arity) when length(Ps) =:= Arity ->
- {ok,Ps,[]};
-case_tuple_pat([#c_literal{val=T}], Arity) when tuple_size(T) =:= Arity ->
- Ps = [#c_literal{val=E} || E <- tuple_to_list(T)],
- {ok,Ps,[]};
-case_tuple_pat([#c_var{anno=Anno0}=V], Arity) ->
- Vars = make_vars(Anno0, 1, Arity),
-
- %% If the entire case statement is evaluated in an effect
- %% context (e.g. "case {A,B} of ... end, ok"), there will
- %% be a warning that a term is constructed but never used.
- %% To avoid that warning, we must annotate the tuple as
- %% compiler generated.
-
- Anno = [compiler_generated|Anno0],
- {ok,Vars,[{V,#c_tuple{anno=Anno,es=Vars}}]};
-case_tuple_pat([#c_alias{var=V,pat=P}], Arity) ->
- case case_tuple_pat([P], Arity) of
- {ok,Ps,Avs} ->
- Anno0 = core_lib:get_anno(P),
- Anno = [compiler_generated|Anno0],
- {ok,Ps,[{V,#c_tuple{anno=Anno,es=unalias_pat_list(Ps)}}|Avs]};
- error ->
- error
- end;
-case_tuple_pat(_, _) -> error.
-
-%% unalias_pat(Pattern) -> Pattern.
-%% Remove all the aliases in a pattern but using the alias variables
-%% instead of the values. We KNOW they will be bound.
-
-unalias_pat(#c_alias{var=V}) -> V;
-unalias_pat(#c_cons{anno=Anno,hd=H0,tl=T0}) ->
- H1 = unalias_pat(H0),
- T1 = unalias_pat(T0),
- ann_c_cons(Anno, H1, T1);
-unalias_pat(#c_tuple{anno=Anno,es=Ps}) ->
- ann_c_tuple(Anno, unalias_pat_list(Ps));
-unalias_pat(Atomic) -> Atomic.
-
-unalias_pat_list(Ps) -> [unalias_pat(P) || P <- Ps].
+%% end. end.
+%%
+case_opt(Arg, Cs0, Sub) ->
+ Cs1 = [{cerl:clause_pats(C),C,[],[]} || C <- Cs0],
+ Args0 = case cerl:is_c_values(Arg) of
+ false -> [Arg];
+ true -> cerl:values_es(Arg)
+ end,
+ LitExpr = cerl:is_literal(Arg),
+ {Args,Cs2} = case_opt_args(Args0, Cs1, Sub, LitExpr, []),
+ Cs = [cerl:update_c_clause(C,
+ reverse(Ps),
+ letify(Bs, cerl:clause_guard(C)),
+ letify(Bs, cerl:clause_body(C))) ||
+ {[],C,Ps,Bs} <- Cs2],
+ {core_lib:make_values(Args),Cs}.
+
+case_opt_args([A0|As0], Cs0, Sub, LitExpr, Acc) ->
+ case case_opt_arg(A0, Sub, Cs0, LitExpr) of
+ {error,Cs1} ->
+ %% Nothing to be done. Move on to the next argument.
+ Cs = [{Ps,C,[P|PsAcc],Bs} || {[P|Ps],C,PsAcc,Bs} <- Cs1],
+ case_opt_args(As0, Cs, Sub, LitExpr, [A0|Acc]);
+ {ok,As1,Cs} ->
+ %% The argument was either expanded (from tuple/list) or
+ %% removed (literal).
+ case_opt_args(As1++As0, Cs, Sub, LitExpr, Acc)
+ end;
+case_opt_args([], Cs, _Sub, _LitExpr, Acc) ->
+ {reverse(Acc),Cs}.
+
+%% case_opt_arg(Expr, Sub, Clauses0, LitExpr) ->
+%% {ok,Args,Clauses} | error
+%% Try to expand one argument to several arguments (if tuple/list)
+%% or to remove a literal argument.
+%%
+case_opt_arg(E0, Sub, Cs, LitExpr) ->
+ case cerl:is_c_var(E0) of
+ false ->
+ case_opt_arg_1(E0, Cs, LitExpr);
+ true ->
+ case case_will_var_match(Cs) of
+ true ->
+ %% All clauses will match a variable in the
+ %% current position. Don't expand this variable
+ %% (that can only make the code worse).
+ {error,Cs};
+ false ->
+ %% If possible, expand this variable to a previously
+ %% matched term.
+ E = case_expand_var(E0, Sub),
+ case_opt_arg_1(E, Cs, LitExpr)
+ end
+ end.
+
+case_opt_arg_1(E0, Cs0, LitExpr) ->
+ case cerl:is_data(E0) of
+ false ->
+ {error,Cs0};
+ true ->
+ E = case_opt_compiler_generated(E0),
+ Cs = case_opt_nomatch(E, Cs0, LitExpr),
+ case cerl:data_type(E) of
+ {atomic,_} ->
+ case_opt_lit(E, Cs);
+ _ ->
+ case_opt_data(E, Cs)
+ end
+ end.
+
+%% case_will_var_match([Clause]) -> true | false.
+%% Return if all clauses will match a variable in the
+%% current position.
+%%
+case_will_var_match(Cs) ->
+ all(fun({[P|_],_,_,_}) ->
+ case cerl_clauses:match(P, any) of
+ {true,_} -> true;
+ _ -> false
+ end
+ end, Cs).
+
+
+%% case_opt_compiler_generated(Core) -> Core'
+%% Mark Core expressions as compiler generated to ensure that
+%% no warnings are generated if they turn out to be unused.
+%% To pretty-printed Core Erlang easier to read, don't mark
+%% constructs that can't cause warnings to be emitted.
+%%
+case_opt_compiler_generated(Core) ->
+ F = fun(C) ->
+ case cerl:type(C) of
+ alias -> C;
+ var -> C;
+ _ -> cerl:set_ann(C, [compiler_generated])
+ end
+ end,
+ cerl_trees:map(F, Core).
+
+
+%% case_expand_var(Expr0, Sub) -> Expr
+%% If Expr0 is a variable that has been previously matched and
+%% is known to be a tuple, return the tuple instead. Otherwise
+%% return Expr0 unchanged.
+%%
+case_expand_var(E, #sub{t=Tdb}) ->
+ Key = cerl:var_name(E),
+ case Tdb of
+ #{Key:=T0} ->
+ case cerl:is_c_tuple(T0) of
+ false ->
+ E;
+ true ->
+ %% The pattern was a tuple. Now we must make sure
+ %% that the elements of the tuple are suitable. In
+ %% particular, we don't want binary or map
+ %% construction here, since that means that the
+ %% binary or map will be constructed in the 'case'
+ %% argument. That is wasteful for binaries. Even
+ %% worse is that any map pattern that use the ':='
+ %% operator will fail when used in map
+ %% construction (only the '=>' operator is allowed
+ %% when constructing a map from scratch).
+ try
+ cerl_trees:map(fun coerce_to_data/1, T0)
+ catch
+ throw:impossible ->
+ %% Something unsuitable was found (map or
+ %% or binary). Keep the variable.
+ E
+ end
+ end;
+ _ ->
+ E
+ end.
+
+%% coerce_to_data(Core) -> Core'
+%% Coerce an element originally from a pattern to an data item or or
+%% variable. Throw an 'impossible' exception if non-data Core Erlang
+%% terms such as binary construction or map construction are
+%% encountered.
+
+coerce_to_data(C) ->
+ case cerl:is_c_alias(C) of
+ false ->
+ case cerl:is_data(C) orelse cerl:is_c_var(C) of
+ true -> C;
+ false -> throw(impossible)
+ end;
+ true ->
+ coerce_to_data(cerl:alias_pat(C))
+ end.
+
+%% case_opt_nomatch(E, Clauses, LitExpr) -> Clauses'
+%% Remove all clauses that cannot possibly match.
+
+case_opt_nomatch(E, [{[P|_],C,_,_}=Current|Cs], LitExpr) ->
+ case cerl_clauses:match(P, E) of
+ none ->
+ %% The pattern will not match the case expression. Remove
+ %% the clause. Unless the entire case expression is a
+ %% literal, also emit a warning.
+ case LitExpr of
+ false -> add_warning(C, nomatch_clause_type);
+ true -> ok
+ end,
+ case_opt_nomatch(E, Cs, LitExpr);
+ _ ->
+ [Current|case_opt_nomatch(E, Cs, LitExpr)]
+ end;
+case_opt_nomatch(_, [], _) -> [].
+
+%% case_opt_lit(Literal, Clauses0) -> {ok,[],Clauses} | error
+%% The current part of the case expression is a literal. That
+%% means that we will know at compile-time whether a clause
+%% will match, and we can remove the corresponding pattern from
+%% each clause.
+%%
+%% The only complication is if the literal is a binary or map.
+%% In general, it is difficult to know whether a binary or
+%% map pattern will match, so we give up in that case.
+
+case_opt_lit(Lit, Cs0) ->
+ try case_opt_lit_1(Lit, Cs0) of
+ Cs ->
+ {ok,[],Cs}
+ catch
+ throw:impossible ->
+ {error,Cs0}
+ end.
+
+case_opt_lit_1(E, [{[P|Ps],C,PsAcc,Bs0}|Cs]) ->
+ %% Non-matching clauses have already been removed
+ %% in case_opt_nomatch/3.
+ case cerl_clauses:match(P, E) of
+ {true,Bs} ->
+ %% The pattern matches the literal. Remove the pattern
+ %% and update the bindings.
+ [{Ps,C,PsAcc,Bs++Bs0}|case_opt_lit_1(E, Cs)];
+ {false,_} ->
+ %% Binary literal and pattern. We are not sure whether
+ %% the pattern will match.
+ throw(impossible)
+ end;
+case_opt_lit_1(_, []) -> [].
+
+%% case_opt_data(Expr, Clauses0, LitExpr) -> {ok,Exprs,Clauses}
+%% The case expression is a non-atomic data constructor (cons
+%% or tuple). We can know at compile time whether each clause
+%% will match, and we can delay the building of the data to
+%% the clauses where it is actually needed.
+
+case_opt_data(E, Cs0) ->
+ Es = cerl:data_es(E),
+ TypeSig = {cerl:data_type(E),cerl:data_arity(E)},
+ try case_opt_data_1(Cs0, Es, TypeSig) of
+ Cs ->
+ {ok,Es,Cs}
+ catch
+ throw:impossible ->
+ %% The pattern contained a binary or map.
+ {error,Cs0}
+ end.
+
+case_opt_data_1([{[P0|Ps0],C,PsAcc,Bs0}|Cs], Es, TypeSig) ->
+ P = case_opt_compiler_generated(P0),
+ BindTo = #c_var{name=dummy},
+ {Ps1,[{BindTo,_}|Bs1]} = case_data_pat_alias(P, BindTo, TypeSig, []),
+ [{Ps1++Ps0,C,PsAcc,Bs1++Bs0}|case_opt_data_1(Cs, Es, TypeSig)];
+case_opt_data_1([], _, _) -> [].
+
+case_data_pat_alias(P, BindTo0, TypeSig, Bs0) ->
+ case cerl:type(P) of
+ alias ->
+ %% Recursively handle the pattern and bind to
+ %% the alias variable.
+ BindTo = cerl:alias_var(P),
+ Apat0 = cerl:alias_pat(P),
+ Ann = [compiler_generated],
+ Apat = cerl:set_ann(Apat0, Ann),
+ {Ps,Bs} = case_data_pat_alias(Apat, BindTo, TypeSig, Bs0),
+ {Ps,[{BindTo0,BindTo}|Bs]};
+ var ->
+ %% Here we will need to actually build the data and bind
+ %% it to the variable.
+ {Type,Arity} = TypeSig,
+ Ann = [compiler_generated],
+ Vars = make_vars(Ann, Arity),
+ Data = cerl:ann_make_data(Ann, Type, Vars),
+ Bs = [{BindTo0,P},{P,Data}|Bs0],
+ {Vars,Bs};
+ _ ->
+ %% Since case_opt_nomatch/3 has removed all clauses that
+ %% cannot match, we KNOW that this clause must match and
+ %% that the pattern must be a data constructor.
+ %% Here we must build the data and bind it to the variable.
+ {Type,_} = TypeSig,
+ DataEs = cerl:data_es(P),
+ Vars = pat_to_expr_list(DataEs),
+ Ann = [compiler_generated],
+ Data = cerl:ann_make_data(Ann, Type, Vars),
+ {DataEs,[{BindTo0,Data}]}
+ end.
+
+%% pat_to_expr(Pattern) -> Expression.
+%% Convert a pattern to an expression if possible. We KNOW that
+%% all variables in the pattern will be bound.
+%%
+%% Throw an 'impossible' exception if a map or (non-literal)
+%% binary is encountered. Trying to use a map pattern as an
+%% expression is incorrect, while rebuilding a potentially
+%% huge binary in an expression would be wasteful.
+
+pat_to_expr(P) ->
+ case cerl:type(P) of
+ alias ->
+ cerl:alias_var(P);
+ var ->
+ P;
+ _ ->
+ case cerl:is_data(P) of
+ false ->
+ %% Map or binary.
+ throw(impossible);
+ true ->
+ Es = pat_to_expr_list(cerl:data_es(P)),
+ cerl:update_data(P, cerl:data_type(P), Es)
+ end
+ end.
+
+pat_to_expr_list(Ps) -> [pat_to_expr(P) || P <- Ps].
+
+make_vars(A, Max) ->
+ make_vars(A, 1, Max).
make_vars(A, I, Max) when I =< Max ->
[make_var(A)|make_vars(A, I+1, Max)];
@@ -2067,54 +2110,129 @@ make_var_name() ->
put(new_var_num, N+1),
list_to_atom("fol"++integer_to_list(N)).
-letify(#c_var{name=Vname}=Var, Val, Body) ->
- case core_lib:is_var_used(Vname, Body) of
- true ->
- A = element(2, Body),
- #c_let{anno=A,vars=[Var],arg=Val,body=Body};
- false -> Body
- end.
+letify(Bs, Body) ->
+ Ann = cerl:get_ann(Body),
+ foldr(fun({V,Val}, B) ->
+ cerl:ann_c_let(Ann, [V], Val, B)
+ end, Body, Bs).
-%% opt_case_in_let(LetExpr) -> LetExpr'
+%% opt_not_in_let(Let) -> Cerl
+%% Try to optimize away a 'not' operator in a 'let'.
-opt_case_in_let(#c_let{vars=Vs,arg=Arg,body=B}=Let) ->
- opt_case_in_let_0(Vs, Arg, B, Let).
+-spec opt_not_in_let(cerl:c_let()) -> cerl:cerl().
-opt_case_in_let_0([#c_var{name=V}], Arg,
- #c_case{arg=#c_var{name=V},clauses=Cs}=Case, Let) ->
- case opt_case_in_let_1(V, Arg, Cs) of
- impossible ->
- case is_simple_case_arg(Arg) andalso
- not core_lib:is_var_used(V, Case#c_case{arg=#c_literal{val=nil}}) of
- true ->
- opt_bool_case(Case#c_case{arg=Arg});
- false ->
- Let
+opt_not_in_let(#c_let{vars=[_]=Vs0,arg=Arg0,body=Body0}=Let) ->
+ case opt_not_in_let(Vs0, Arg0, Body0) of
+ {[],#c_values{es=[]},Body} ->
+ Body;
+ {Vs,Arg,Body} ->
+ Let#c_let{vars=Vs,arg=Arg,body=Body}
+ end;
+opt_not_in_let(Let) -> Let.
+
+%% opt_not_in_let(Vs, Arg, Body) -> {Vs',Arg',Body'}
+%% Try to optimize away a 'not' operator in a 'let'.
+
+-spec opt_not_in_let([cerl:c_var()], cerl:cerl(), cerl:cerl()) ->
+ {[cerl:c_var()],cerl:cerl(),cerl:cerl()}.
+
+opt_not_in_let([#c_var{name=V}]=Vs0, Arg0, Body0) ->
+ case cerl:type(Body0) of
+ call ->
+ %% let <V> = Expr in not V ==>
+ %% let <> = <> in notExpr
+ case opt_not_in_let_1(V, Body0, Arg0) of
+ no ->
+ {Vs0,Arg0,Body0};
+ {yes,Body} ->
+ {[],#c_values{es=[]},Body}
+ end;
+ 'let' ->
+ %% let <V> = Expr in let <Var> = not V in Body ==>
+ %% let <Var> = notExpr in Body
+ %% V must not be used in Body.
+ LetArg = cerl:let_arg(Body0),
+ case opt_not_in_let_1(V, LetArg, Arg0) of
+ no ->
+ {Vs0,Arg0,Body0};
+ {yes,Arg} ->
+ LetBody = cerl:let_body(Body0),
+ case core_lib:is_var_used(V, LetBody) of
+ true ->
+ {Vs0,Arg0,Body0};
+ false ->
+ LetVars = cerl:let_vars(Body0),
+ {LetVars,Arg,LetBody}
+ end
end;
- Expr -> Expr
+ _ ->
+ {Vs0,Arg0,Body0}
end;
-opt_case_in_let_0(_, _, _, Let) -> Let.
+opt_not_in_let(Vs, Arg, Body) ->
+ {Vs,Arg,Body}.
-opt_case_in_let_1(V, Arg, Cs) ->
- try
- opt_case_in_let_2(V, Arg, Cs)
- catch
- _:_ -> impossible
+opt_not_in_let_1(V, Call, Body) ->
+ case Call of
+ #c_call{module=#c_literal{val=erlang},
+ name=#c_literal{val='not'},
+ args=[#c_var{name=V}]} ->
+ opt_not_in_let_2(Body, Call);
+ _ ->
+ no
end.
-opt_case_in_let_2(V, Arg0,
- [#c_clause{pats=[#c_tuple{es=Es}],
- guard=#c_literal{val=true},body=B}|_]) ->
-
- %% In {V1,V2,...} = case E of P -> ... {Val1,Val2,...}; ... end.
- %% avoid building tuples, by converting tuples to multiple values.
- %% (The optimisation is not done if the built tuple is used or returned.)
-
- true = all(fun (#c_var{}) -> true;
- (_) -> false end, Es), %Only variables in tuple
- false = core_lib:is_var_used(V, B), %Built tuple must not be used.
- Arg1 = tuple_to_values(Arg0, length(Es)), %Might fail.
- #c_let{vars=Es,arg=Arg1,body=B}.
+opt_not_in_let_2(#c_case{clauses=Cs0}=Case, NotCall) ->
+ Vars = make_vars([], 1),
+ Body = NotCall#c_call{args=Vars},
+ Cs = [begin
+ Let = #c_let{vars=Vars,arg=B,body=Body},
+ C#c_clause{body=opt_not_in_let(Let)}
+ end || #c_clause{body=B}=C <- Cs0],
+ {yes,Case#c_case{clauses=Cs}};
+opt_not_in_let_2(#c_call{}=Call0, _NotCall) ->
+ invert_call(Call0);
+opt_not_in_let_2(_, _) -> no.
+
+invert_call(#c_call{module=#c_literal{val=erlang},
+ name=#c_literal{val=Name0},
+ args=[_,_]}=Call) ->
+ case inverse_rel_op(Name0) of
+ no -> no;
+ Name -> {yes,Call#c_call{name=#c_literal{val=Name}}}
+ end;
+invert_call(#c_call{}) -> no.
+
+%% inverse_rel_op(Op) -> no | RevOp
+
+inverse_rel_op('=:=') -> '=/=';
+inverse_rel_op('=/=') -> '=:=';
+inverse_rel_op('==') -> '/=';
+inverse_rel_op('/=') -> '==';
+inverse_rel_op('>') -> '=<';
+inverse_rel_op('<') -> '>=';
+inverse_rel_op('>=') -> '<';
+inverse_rel_op('=<') -> '>';
+inverse_rel_op(_) -> no.
+
+
+%% opt_bool_case_in_let(LetExpr, Sub) -> Core
+
+opt_bool_case_in_let(#c_let{vars=Vs,arg=Arg,body=B}=Let, Sub) ->
+ opt_case_in_let_1(Vs, Arg, B, Let, Sub).
+
+opt_case_in_let_1([#c_var{name=V}], Arg,
+ #c_case{arg=#c_var{name=V}}=Case0, Let, Sub) ->
+ case is_simple_case_arg(Arg) of
+ true ->
+ Case = opt_bool_case(Case0#c_case{arg=Arg}),
+ case core_lib:is_var_used(V, Case) of
+ false -> expr(Case, sub_new(Sub));
+ true -> Let
+ end;
+ false ->
+ Let
+ end;
+opt_case_in_let_1(_, _, _, Let, _) -> Let.
%% is_simple_case_arg(Expr) -> true|false
%% Determine whether the Expr is simple enough to be worth
@@ -2156,18 +2274,15 @@ is_bool_expr(#c_clause{body=B}, Sub) ->
is_bool_expr(B, Sub);
is_bool_expr(#c_let{vars=[V],arg=Arg,body=B}, Sub0) ->
Sub = case is_bool_expr(Arg, Sub0) of
- true -> update_types(V, [#c_literal{val=true}], Sub0);
+ true -> update_types(V, [bool], Sub0);
false -> Sub0
end,
is_bool_expr(B, Sub);
is_bool_expr(#c_let{body=B}, Sub) ->
%% Binding of multiple variables.
is_bool_expr(B, Sub);
-is_bool_expr(#c_literal{val=Bool}, _) when is_boolean(Bool) ->
- true;
-is_bool_expr(#c_var{name=V}, Sub) ->
- is_boolean_type(V, Sub);
-is_bool_expr(_, _) -> false.
+is_bool_expr(C, Sub) ->
+ is_boolean_type(C, Sub) =:= yes.
is_bool_expr_list([C|Cs], Sub) ->
is_bool_expr(C, Sub) andalso is_bool_expr_list(Cs, Sub);
@@ -2180,19 +2295,34 @@ is_bool_expr_list([], _) -> true.
%% functions, or is_record/2).
%%
is_safe_bool_expr(Core, Sub) ->
- is_safe_bool_expr_1(Core, Sub, gb_sets:empty()).
+ is_safe_bool_expr_1(Core, Sub, cerl_sets:new()).
is_safe_bool_expr_1(#c_call{module=#c_literal{val=erlang},
- name=#c_literal{val=is_record},
- args=[_,_]},
- _Sub, _BoolVars) ->
+ name=#c_literal{val=is_record},
+ args=[A,#c_literal{val=Tag},#c_literal{val=Size}]},
+ Sub, _BoolVars) when is_atom(Tag), is_integer(Size) ->
+ is_safe_simple(A, Sub);
+is_safe_bool_expr_1(#c_call{module=#c_literal{val=erlang},
+ name=#c_literal{val=is_record}},
+ _Sub, _BoolVars) ->
%% The is_record/2 BIF is NOT allowed in guards.
+ %% The is_record/3 BIF where its second argument is not an atom or its third
+ %% is not an integer is NOT allowed in guards.
%%
%% NOTE: Calls like is_record(Expr, LiteralTag), where LiteralTag
%% is a literal atom referring to a defined record, have already
%% been rewritten to is_record(Expr, LiteralTag, TupleSize).
false;
is_safe_bool_expr_1(#c_call{module=#c_literal{val=erlang},
+ name=#c_literal{val=is_function},
+ args=[A,#c_literal{val=Arity}]},
+ Sub, _BoolVars) when is_integer(Arity), Arity >= 0 ->
+ is_safe_simple(A, Sub);
+is_safe_bool_expr_1(#c_call{module=#c_literal{val=erlang},
+ name=#c_literal{val=is_function}},
+ _Sub, _BoolVars) ->
+ false;
+is_safe_bool_expr_1(#c_call{module=#c_literal{val=erlang},
name=#c_literal{val=Name},args=Args},
Sub, BoolVars) ->
NumArgs = length(Args),
@@ -2211,7 +2341,7 @@ is_safe_bool_expr_1(#c_let{vars=Vars,arg=Arg,body=B}, Sub, BoolVars) ->
true ->
case {is_safe_bool_expr_1(Arg, Sub, BoolVars),Vars} of
{true,[#c_var{name=V}]} ->
- is_safe_bool_expr_1(B, Sub, gb_sets:add(V, BoolVars));
+ is_safe_bool_expr_1(B, Sub, cerl_sets:add_element(V, BoolVars));
{false,_} ->
is_safe_bool_expr_1(B, Sub, BoolVars)
end;
@@ -2220,7 +2350,7 @@ is_safe_bool_expr_1(#c_let{vars=Vars,arg=Arg,body=B}, Sub, BoolVars) ->
is_safe_bool_expr_1(#c_literal{val=Val}, _Sub, _) ->
is_boolean(Val);
is_safe_bool_expr_1(#c_var{name=V}, _Sub, BoolVars) ->
- gb_sets:is_element(V, BoolVars);
+ cerl_sets:is_element(V, BoolVars);
is_safe_bool_expr_1(_, _, _) -> false.
is_safe_bool_expr_list([C|Cs], Sub, BoolVars) ->
@@ -2230,38 +2360,6 @@ is_safe_bool_expr_list([C|Cs], Sub, BoolVars) ->
end;
is_safe_bool_expr_list([], _, _) -> true.
-%% tuple_to_values(Expr, TupleArity) -> Expr'
-%% Convert tuples in return position of arity TupleArity to values.
-%% Throws an exception for constructs that are not handled.
-
-tuple_to_values(#c_tuple{es=Es}, Arity) when length(Es) =:= Arity ->
- core_lib:make_values(Es);
-tuple_to_values(#c_literal{val=Tuple}=Lit, Arity) when tuple_size(Tuple) =:= Arity ->
- Es = [Lit#c_literal{val=E} || E <- tuple_to_list(Tuple)],
- core_lib:make_values(Es);
-tuple_to_values(#c_case{clauses=Cs0}=Case, Arity) ->
- Cs1 = [tuple_to_values(E, Arity) || E <- Cs0],
- Case#c_case{clauses=Cs1};
-tuple_to_values(#c_seq{body=B0}=Seq, Arity) ->
- Seq#c_seq{body=tuple_to_values(B0, Arity)};
-tuple_to_values(#c_let{body=B0}=Let, Arity) ->
- Let#c_let{body=tuple_to_values(B0, Arity)};
-tuple_to_values(#c_receive{clauses=Cs0,timeout=Timeout,action=A0}=Rec, Arity) ->
- Cs = [tuple_to_values(E, Arity) || E <- Cs0],
- A = case Timeout of
- #c_literal{val=infinity} -> A0;
- _ -> tuple_to_values(A0, Arity)
- end,
- Rec#c_receive{clauses=Cs,action=A};
-tuple_to_values(#c_clause{body=B0}=Clause, Arity) ->
- B = tuple_to_values(B0, Arity),
- Clause#c_clause{body=B};
-tuple_to_values(Expr, _) ->
- case will_fail(Expr) of
- true -> Expr;
- false -> erlang:error({not_handled,Expr})
- end.
-
%% simplify_let(Let, Sub) -> Expr | impossible
%% If the argument part of an let contains a complex expression, such
%% as a let or a sequence, move the original let body into the complex
@@ -2286,12 +2384,12 @@ move_let_into_expr(#c_let{vars=InnerVs0,body=InnerBody0}=Inner,
%% in <InnerBody>
%%
Arg = body(Arg0, Sub0),
- ScopeSub0 = sub_subst_scope(Sub0#sub{t=[]}),
- {OuterVs,ScopeSub} = pattern_list(OuterVs0, ScopeSub0),
-
+ ScopeSub0 = sub_subst_scope(Sub0#sub{t=#{}}),
+ {OuterVs,ScopeSub} = var_list(OuterVs0, ScopeSub0),
+
OuterBody = body(OuterBody0, ScopeSub),
- {InnerVs,Sub} = pattern_list(InnerVs0, Sub0),
+ {InnerVs,Sub} = var_list(InnerVs0, Sub0),
InnerBody = body(InnerBody0, Sub),
Outer#c_let{vars=OuterVs,arg=Arg,
body=Inner#c_let{vars=InnerVs,arg=OuterBody,body=InnerBody}};
@@ -2307,128 +2405,401 @@ move_let_into_expr(#c_let{vars=Lvs0,body=Lbody0}=Let,
case {TwoClauses,is_failing_clause(Ca0),is_failing_clause(Cb0)} of
{true,false,true} ->
%% let <Lvars> = case <Case-expr> of
- %% <Cvars> -> <Clause-body>;
- %% <OtherCvars> -> erlang:error(...)
+ %% <Cpats> -> <Clause-body>;
+ %% <OtherCpats> -> erlang:error(...)
%% end
%% in <Let-body>
%%
%% ==>
%%
%% case <Case-expr> of
- %% <Cvars> ->
+ %% <Cpats> ->
%% let <Lvars> = <Clause-body>
%% in <Let-body>;
- %% <OtherCvars> -> erlang:error(...)
+ %% <OtherCpats> -> erlang:error(...)
%% end
Cexpr = body(Cexpr0, Sub0),
- CaVars0 = Ca0#c_clause.pats,
+ CaPats0 = Ca0#c_clause.pats,
G0 = Ca0#c_clause.guard,
B0 = Ca0#c_clause.body,
- ScopeSub0 = sub_subst_scope(Sub0#sub{t=[]}),
- {CaVars,ScopeSub} = pattern_list(CaVars0, ScopeSub0),
- G = guard(G0, ScopeSub),
-
- B1 = body(B0, ScopeSub),
-
- {Lvs,B2,Sub1} = let_substs(Lvs0, B1, Sub0),
- Sub2 = Sub1#sub{s=gb_sets:union(ScopeSub#sub.s,
- Sub1#sub.s)},
- Lbody = body(Lbody0, Sub2),
- B = Let#c_let{vars=Lvs,arg=core_lib:make_values(B2),body=Lbody},
-
- Ca = Ca0#c_clause{pats=CaVars,guard=G,body=B},
- Cb = clause(Cb0, Cexpr, value, Sub0),
- Case#c_case{arg=Cexpr,clauses=[Ca,Cb]};
+ ScopeSub0 = sub_subst_scope(Sub0#sub{t=#{}}),
+ try pattern_list(CaPats0, ScopeSub0) of
+ {CaPats,ScopeSub} ->
+ G = guard(G0, ScopeSub),
+
+ B1 = body(B0, ScopeSub),
+
+ {Lvs,B2,Sub1} = let_substs(Lvs0, B1, Sub0),
+ Sub2 = Sub1#sub{s=cerl_sets:union(ScopeSub#sub.s,
+ Sub1#sub.s)},
+ Lbody = body(Lbody0, Sub2),
+ B = Let#c_let{vars=Lvs,
+ arg=core_lib:make_values(B2),
+ body=Lbody},
+
+ Ca = Ca0#c_clause{pats=CaPats,guard=G,body=B},
+ Cb = clause(Cb0, Cexpr, value, Sub0),
+ Case#c_case{arg=Cexpr,clauses=[Ca,Cb]}
+ catch
+ nomatch ->
+ %% This is not a defeat. The code will eventually
+ %% be optimized to erlang:error(...) by the other
+ %% optimizations done in this module.
+ impossible
+ end;
{_,_,_} -> impossible
end;
+move_let_into_expr(#c_let{vars=Lvs0,body=Lbody0}=Let,
+ #c_seq{arg=Sarg0,body=Sbody0}=Seq, Sub0) ->
+ %%
+ %% let <Lvars> = do <Seq-arg>
+ %% <Seq-body>
+ %% in <Let-body>
+ %%
+ %% ==>
+ %%
+ %% do <Seq-arg>
+ %% let <Lvars> = <Seq-body>
+ %% in <Let-body>
+ %%
+ Sarg = body(Sarg0, Sub0),
+ Sbody1 = body(Sbody0, Sub0),
+ {Lvs,Sbody,Sub} = let_substs(Lvs0, Sbody1, Sub0),
+ Lbody = body(Lbody0, Sub),
+ Seq#c_seq{arg=Sarg,body=Let#c_let{vars=Lvs,arg=core_lib:make_values(Sbody),
+ body=Lbody}};
move_let_into_expr(_Let, _Expr, _Sub) -> impossible.
is_failing_clause(#c_clause{body=B}) ->
will_fail(B).
-scope_add(Vs, #sub{s=Scope0}=Sub) ->
- Scope = foldl(fun(V, S) when is_integer(V); is_atom(V) ->
- gb_sets:add(V, S)
- end, Scope0, Vs),
- Sub#sub{s=Scope}.
+%% opt_case_in_let(Let) -> Let'
+%% Try to avoid building tuples that are immediately matched.
+%% A common pattern is:
+%%
+%% {V1,V2,...} = case E of P -> ... {Val1,Val2,...}; ... end
+%%
+%% In Core Erlang the pattern would look like this:
+%%
+%% let <V> = case E of
+%% ... -> ... {Val1,Val2}
+%% ...
+%% end,
+%% in case V of
+%% {A,B} -> ... <use A and B> ...
+%% end
+%%
+%% Rewrite this to:
+%%
+%% let <V1,V2> = case E of
+%% ... -> ... <Val1,Val2>
+%% ...
+%% end,
+%% in
+%% let <V> = {V1,V2}
+%% in case V of
+%% {A,B} -> ... <use A and B> ...
+%% end
+%%
+%% Note that the second 'case' is unchanged. The other optimizations
+%% in this module will eliminate the building of the tuple and
+%% rewrite the second case to:
+%%
+%% case <V1,V2> of
+%% <A,B> -> ... <use A and B> ...
+%% end
+%%
+
+opt_case_in_let(#c_let{vars=Vs,arg=Arg0,body=B}=Let0) ->
+ case matches_data(Vs, B) of
+ {yes,TypeSig} ->
+ case delay_build(Arg0, TypeSig) of
+ no ->
+ Let0;
+ {yes,Vars,Arg,Data} ->
+ InnerLet = Let0#c_let{arg=Data},
+ Let0#c_let{vars=Vars,arg=Arg,body=InnerLet}
+ end;
+ no ->
+ Let0
+ end.
+
+matches_data([#c_var{name=V}], #c_case{arg=#c_var{name=V},
+ clauses=[#c_clause{pats=[P]}|_]}) ->
+ case cerl:is_data(P) of
+ false ->
+ no;
+ true ->
+ case cerl:data_type(P) of
+ {atomic,_} ->
+ no;
+ Type ->
+ {yes,{Type,cerl:data_arity(P)}}
+ end
+ end;
+matches_data(_, _) -> no.
+
+delay_build(Core, TypeSig) ->
+ case cerl:is_data(Core) of
+ true -> no;
+ false -> delay_build_1(Core, TypeSig)
+ end.
+
+delay_build_1(Core0, TypeSig) ->
+ try delay_build_expr(Core0, TypeSig) of
+ Core ->
+ {Type,Arity} = TypeSig,
+ Ann = [compiler_generated],
+ Vars = make_vars(Ann, Arity),
+ Data = cerl:ann_make_data(Ann, Type, Vars),
+ {yes,Vars,Core,Data}
+ catch
+ throw:impossible ->
+ no
+ end.
+
+delay_build_cs([#c_clause{body=B0}=C0|Cs], TypeSig) ->
+ B = delay_build_expr(B0, TypeSig),
+ C = C0#c_clause{body=B},
+ [C|delay_build_cs(Cs, TypeSig)];
+delay_build_cs([], _) -> [].
+
+delay_build_expr(Core, {Type,Arity}=TypeSig) ->
+ case cerl:is_data(Core) of
+ false ->
+ delay_build_expr_1(Core, TypeSig);
+ true ->
+ case {cerl:data_type(Core),cerl:data_arity(Core)} of
+ {Type,Arity} ->
+ core_lib:make_values(cerl:data_es(Core));
+ {_,_} ->
+ throw(impossible)
+ end
+ end.
+
+delay_build_expr_1(#c_case{clauses=Cs0}=Case, TypeSig) ->
+ Cs = delay_build_cs(Cs0, TypeSig),
+ Case#c_case{clauses=Cs};
+delay_build_expr_1(#c_let{body=B0}=Let, TypeSig) ->
+ B = delay_build_expr(B0, TypeSig),
+ Let#c_let{body=B};
+delay_build_expr_1(#c_receive{clauses=Cs0,
+ timeout=Timeout,
+ action=A0}=Rec, TypeSig) ->
+ Cs = delay_build_cs(Cs0, TypeSig),
+ A = case Timeout of
+ #c_literal{val=infinity} -> A0;
+ _ -> delay_build_expr(A0, TypeSig)
+ end,
+ Rec#c_receive{clauses=Cs,action=A};
+delay_build_expr_1(#c_seq{body=B0}=Seq, TypeSig) ->
+ B = delay_build_expr(B0, TypeSig),
+ Seq#c_seq{body=B};
+delay_build_expr_1(Core, _TypeSig) ->
+ case will_fail(Core) of
+ true -> Core;
+ false -> throw(impossible)
+ end.
%% opt_simple_let(#c_let{}, Context, Sub) -> CoreTerm
%% Optimize a let construct that does not contain any lets in
%% in its argument.
-opt_simple_let(#c_let{arg=Arg0}=Let, Ctxt, Sub0) ->
- Arg = body(Arg0, value, Sub0), %This is a body
+opt_simple_let(Let0, Ctxt, Sub) ->
+ case opt_not_in_let(Let0) of
+ #c_let{}=Let ->
+ opt_simple_let_0(Let, Ctxt, Sub);
+ Expr ->
+ expr(Expr, Ctxt, Sub)
+ end.
+
+opt_simple_let_0(#c_let{arg=Arg0}=Let, Ctxt, Sub) ->
+ Arg = body(Arg0, value, Sub), %This is a body
case will_fail(Arg) of
true -> Arg;
- false -> opt_simple_let_1(Let, Arg, Ctxt, Sub0)
+ false -> opt_simple_let_1(Let, Arg, Ctxt, Sub)
end.
opt_simple_let_1(#c_let{vars=Vs0,body=B0}=Let, Arg0, Ctxt, Sub0) ->
%% Optimise let and add new substitutions.
- {Vs,Args,Sub1} = let_substs(Vs0, Arg0, Sub0),
- BodySub = case {Vs,Args} of
- {[V],[A]} ->
- case is_bool_expr(A, Sub0) of
- true ->
- update_types(V, [#c_literal{val=true}], Sub1);
- false ->
- Sub1
- end;
- {_,_} -> Sub1
- end,
- B = body(B0, Ctxt, BodySub),
- Arg = core_lib:make_values(Args),
- opt_simple_let_2(Let, Vs, Arg, B, Ctxt, Sub1).
-
-opt_simple_let_2(Let0, Vs0, Arg0, Body0, effect, Sub) ->
- case {Vs0,Arg0,Body0} of
- {[],#c_values{es=[]},Body} ->
- %% No variables left (because of substitutions).
- Body;
- {[_|_],Arg,#c_literal{}} ->
- %% The body is a literal. That means that we can ignore
- %% it and that the return value is Arg revisited in
- %% effect context.
- body(Arg, effect, sub_new_preserve_types(Sub));
- {Vs,Arg,Body} ->
- %% Since we are in effect context, there is a chance
- %% that the body no longer references the variables.
- %% In that case we can construct a sequence and visit
- %% that in effect context:
- %% let <Var> = Arg in BodyWithoutVar ==> seq Arg BodyWithoutVar
- case is_any_var_used(Vs, Body) of
- false ->
- expr(#c_seq{arg=Arg,body=Body}, effect, sub_new_preserve_types(Sub));
- true ->
- Let = Let0#c_let{vars=Vs,arg=Arg,body=Body},
- opt_case_in_let_arg(opt_case_in_let(Let), effect, Sub)
- end
- end;
-opt_simple_let_2(Let, Vs0, Arg0, Body, value, Sub) ->
+ {Vs1,Args,Sub1} = let_substs(Vs0, Arg0, Sub0),
+ BodySub = update_let_types(Vs1, Args, Sub1),
+ B1 = body(B0, Ctxt, BodySub),
+ Arg1 = core_lib:make_values(Args),
+ {Vs,Arg,B} = opt_not_in_let(Vs1, Arg1, B1),
+ opt_simple_let_2(Let, Vs, Arg, B, B0, Ctxt, Sub1).
+
+opt_simple_let_2(Let0, Vs0, Arg0, Body, PrevBody, Ctxt, Sub) ->
case {Vs0,Arg0,Body} of
- {[#c_var{name=N1}],Arg,#c_var{name=N2}} ->
+ {[#c_var{name=N1}],Arg1,#c_var{name=N2}} ->
case N1 =:= N2 of
true ->
%% let <Var> = Arg in <Var> ==> Arg
- Arg;
+ Arg1;
false ->
%% let <Var> = Arg in <OtherVar> ==> seq Arg OtherVar
- expr(#c_seq{arg=Arg,body=Body}, value, sub_new_preserve_types(Sub))
+ Arg = maybe_suppress_warnings(Arg1, Vs0, PrevBody),
+ expr(#c_seq{arg=Arg,body=Body}, Ctxt,
+ sub_new_preserve_types(Sub))
end;
{[],#c_values{es=[]},_} ->
%% No variables left.
Body;
- {_,Arg,#c_literal{}} ->
- %% The variable is not used in the body. The argument
- %% can be evaluated in effect context to simplify it.
- expr(#c_seq{arg=Arg,body=Body}, value, sub_new_preserve_types(Sub));
- {Vs,Arg,Body} ->
- opt_case_in_let_arg(
- opt_case_in_let(Let#c_let{vars=Vs,arg=Arg,body=Body}),
- value, Sub)
+ {Vs,Arg1,#c_literal{}} ->
+ Arg = maybe_suppress_warnings(Arg1, Vs, PrevBody),
+ E = case Ctxt of
+ effect ->
+ %% Throw away the literal body.
+ Arg;
+ value ->
+ %% Since the variable is not used in the body, we
+ %% can rewrite the let to a sequence.
+ %% let <Var> = Arg in Literal ==> seq Arg Literal
+ #c_seq{arg=Arg,body=Body}
+ end,
+ expr(E, Ctxt, sub_new_preserve_types(Sub));
+ {Vs,Arg1,Body} ->
+ %% If none of the variables are used in the body, we can
+ %% rewrite the let to a sequence:
+ %% let <Var> = Arg in BodyWithoutVar ==>
+ %% seq Arg BodyWithoutVar
+ case is_any_var_used(Vs, Body) of
+ false ->
+ Arg = maybe_suppress_warnings(Arg1, Vs, PrevBody),
+ expr(#c_seq{arg=Arg,body=Body}, Ctxt,
+ sub_new_preserve_types(Sub));
+ true ->
+ Let1 = Let0#c_let{vars=Vs,arg=Arg1,body=Body},
+ Let2 = opt_bool_case_in_let(Let1, Sub),
+ opt_case_in_let_arg(Let2, Ctxt, Sub)
+ end
+ end.
+
+%% maybe_suppress_warnings(Arg, [#c_var{}], PreviousBody) -> Arg'
+%% Try to suppress false warnings when a variable is not used.
+%% For instance, we don't expect a warning for useless building in:
+%%
+%% R = #r{}, %No warning expected.
+%% R#r.f %Optimization would remove the reference to R.
+%%
+%% To avoid false warnings, we will check whether the variables were
+%% referenced in the original unoptimized code. If they were, we will
+%% consider the warning false and suppress it.
+
+maybe_suppress_warnings(Arg, Vs, PrevBody) ->
+ case should_suppress_warning(Arg) of
+ true ->
+ Arg; %Already suppressed.
+ false ->
+ case is_any_var_used(Vs, PrevBody) of
+ true ->
+ suppress_warning([Arg]);
+ false ->
+ Arg
+ end
end.
+%% Suppress warnings for a Core Erlang expression whose value will
+%% be ignored.
+suppress_warning([H|T]) ->
+ case cerl:is_literal(H) of
+ true ->
+ suppress_warning(T);
+ false ->
+ case cerl:is_data(H) of
+ true ->
+ suppress_warning(cerl:data_es(H) ++ T);
+ false ->
+ %% Some other thing, such as a function call.
+ %% This cannot be the compiler's fault, so the
+ %% warning should not be suppressed. We must
+ %% be careful not to destroy tail-recursion.
+ case T of
+ [] ->
+ H;
+ [_|_] ->
+ cerl:c_seq(H, suppress_warning(T))
+ end
+ end
+ end;
+suppress_warning([]) -> void().
+
+move_case_into_arg(#c_case{arg=#c_let{vars=OuterVars0,arg=OuterArg,
+ body=InnerArg0}=Outer,
+ clauses=InnerClauses}=Inner, Sub) ->
+ %%
+ %% case let <OuterVars> = <OuterArg> in <InnerArg> of
+ %% <InnerClauses>
+ %% end
+ %%
+ %% ==>
+ %%
+ %% let <OuterVars> = <OuterArg>
+ %% in case <InnerArg> of <InnerClauses> end
+ %%
+ ScopeSub0 = sub_subst_scope(Sub#sub{t=#{}}),
+ {OuterVars,ScopeSub} = var_list(OuterVars0, ScopeSub0),
+ InnerArg = body(InnerArg0, ScopeSub),
+ Outer#c_let{vars=OuterVars,arg=OuterArg,
+ body=Inner#c_case{arg=InnerArg,clauses=InnerClauses}};
+move_case_into_arg(#c_case{arg=#c_case{arg=OuterArg,
+ clauses=[OuterCa0,OuterCb]}=Outer,
+ clauses=InnerClauses}=Inner0, Sub) ->
+ case is_failing_clause(OuterCb) of
+ true ->
+ #c_clause{pats=OuterPats0,guard=OuterGuard0,
+ body=InnerArg0} = OuterCa0,
+ %%
+ %% case case <OuterArg> of
+ %% <OuterPats> when <OuterGuard> -> <InnerArg>
+ %% <OuterCb>
+ %% ...
+ %% end of
+ %% <InnerClauses>
+ %% end
+ %%
+ %% ==>
+ %%
+ %% case <OuterArg> of
+ %% <OuterPats> when <OuterGuard> ->
+ %% case <InnerArg> of <InnerClauses> end
+ %% <OuterCb>
+ %% end
+ %%
+ ScopeSub0 = sub_subst_scope(Sub#sub{t=#{}}),
+
+ %% We KNOW that pattern_list/2 has already been called for OuterPats0;
+ %% therefore, it cannot throw an exception.
+ {OuterPats,ScopeSub} = pattern_list(OuterPats0, ScopeSub0),
+ OuterGuard = guard(OuterGuard0, ScopeSub),
+ InnerArg = body(InnerArg0, ScopeSub),
+ Inner = Inner0#c_case{arg=InnerArg,clauses=InnerClauses},
+ OuterCa = OuterCa0#c_clause{pats=OuterPats,
+ guard=OuterGuard,
+ body=Inner},
+ Outer#c_case{arg=OuterArg,
+ clauses=[OuterCa,OuterCb]};
+ false ->
+ impossible
+ end;
+move_case_into_arg(#c_case{arg=#c_seq{arg=OuterArg,body=InnerArg}=Outer,
+ clauses=InnerClauses}=Inner, _Sub) ->
+ %%
+ %% case do <OuterArg> <InnerArg> of
+ %% <InnerClauses>
+ %% end
+ %%
+ %% ==>
+ %%
+ %% do <OuterArg>
+ %% case <InnerArg> of <InerClauses> end
+ %%
+ Outer#c_seq{arg=OuterArg,
+ body=Inner#c_case{arg=InnerArg,clauses=InnerClauses}};
+move_case_into_arg(_, _) ->
+ impossible.
+
%% In guards only, rewrite a case in a let argument like
%%
%% let <Var> = case <> of
@@ -2445,7 +2816,7 @@ opt_simple_let_2(Let, Vs0, Arg0, Body, value, Sub) ->
%% <> when 'true' ->
%% let <Var> = Literal2 in LetBody
%% end
-%%
+%%
%% In the worst case, the size of the code could increase.
%% In practice, though, substituting the literals into
%% LetBody and doing constant folding will decrease the code
@@ -2478,14 +2849,120 @@ is_any_var_used([#c_var{name=V}|Vs], Expr) ->
end;
is_any_var_used([], _) -> false.
-is_boolean_type(V, #sub{t=Tdb}) ->
- case orddict:find(V, Tdb) of
- {ok,bool} -> true;
- _ -> false
+%%%
+%%% Retrieving information about types.
+%%%
+
+-spec get_type(cerl:cerl(), #sub{}) -> type_info() | 'none'.
+
+get_type(#c_var{name=V}, #sub{t=Tdb}) ->
+ case Tdb of
+ #{V:=Type} -> Type;
+ _ -> none
+ end;
+get_type(C, _) ->
+ case cerl:type(C) of
+ binary -> C;
+ map -> C;
+ _ ->
+ case cerl:is_data(C) of
+ true -> C;
+ false -> none
+ end
+ end.
+
+-spec is_boolean_type(cerl:cerl(), sub()) -> yes_no_maybe().
+
+is_boolean_type(Var, Sub) ->
+ case get_type(Var, Sub) of
+ none ->
+ maybe;
+ bool ->
+ yes;
+ C ->
+ B = cerl:is_c_atom(C) andalso
+ is_boolean(cerl:atom_val(C)),
+ yes_no(B)
end.
+-spec is_int_type(cerl:cerl(), sub()) -> yes_no_maybe().
+
+is_int_type(Var, Sub) ->
+ case get_type(Var, Sub) of
+ none -> maybe;
+ integer -> yes;
+ C -> yes_no(cerl:is_c_int(C))
+ end.
+
+-spec is_tuple_type(cerl:cerl(), sub()) -> yes_no_maybe().
+
+is_tuple_type(Var, Sub) ->
+ case get_type(Var, Sub) of
+ none -> maybe;
+ C -> yes_no(cerl:is_c_tuple(C))
+ end.
+
+yes_no(true) -> yes;
+yes_no(false) -> no.
+
+%%%
+%%% Update type information.
+%%%
+
+update_let_types(Vs, Args, Sub) when is_list(Args) ->
+ update_let_types_1(Vs, Args, Sub);
+update_let_types(_Vs, _Arg, Sub) ->
+ %% The argument is a complex expression (such as a 'case')
+ %% that returns multiple values.
+ Sub.
+
+update_let_types_1([#c_var{}=V|Vs], [A|As], Sub0) ->
+ Sub = update_types_from_expr(V, A, Sub0),
+ update_let_types_1(Vs, As, Sub);
+update_let_types_1([], [], Sub) -> Sub.
+
+update_types_from_expr(V, Expr, Sub) ->
+ Type = extract_type(Expr, Sub),
+ update_types(V, [Type], Sub).
+
+extract_type(#c_call{module=#c_literal{val=erlang},
+ name=#c_literal{val=Name},
+ args=Args}=Call, Sub) ->
+ case returns_integer(Name, Args) of
+ true -> integer;
+ false -> extract_type_1(Call, Sub)
+ end;
+extract_type(Expr, Sub) ->
+ extract_type_1(Expr, Sub).
+
+extract_type_1(Expr, Sub) ->
+ case is_bool_expr(Expr, Sub) of
+ false -> Expr;
+ true -> bool
+ end.
+
+returns_integer('band', [_,_]) -> true;
+returns_integer('bnot', [_]) -> true;
+returns_integer('bor', [_,_]) -> true;
+returns_integer('bxor', [_,_]) -> true;
+returns_integer(bit_size, [_]) -> true;
+returns_integer('bsl', [_,_]) -> true;
+returns_integer('bsr', [_,_]) -> true;
+returns_integer(byte_size, [_]) -> true;
+returns_integer('div', [_,_]) -> true;
+returns_integer(length, [_]) -> true;
+returns_integer('rem', [_,_]) -> true;
+returns_integer('round', [_]) -> true;
+returns_integer(size, [_]) -> true;
+returns_integer(tuple_size, [_]) -> true;
+returns_integer(trunc, [_]) -> true;
+returns_integer(_, _) -> false.
+
%% update_types(Expr, Pattern, Sub) -> Sub'
%% Update the type database.
+
+-spec update_types(cerl:cerl(), [type_info()], sub()) -> sub().
+
update_types(Expr, Pat, #sub{t=Tdb0}=Sub) ->
Tdb = update_types_1(Expr, Pat, Tdb0),
Sub#sub{t=Tdb}.
@@ -2502,33 +2979,38 @@ update_types_1(#c_var{name=V,anno=Anno}, Pat, Types) ->
update_types_1(_, _, Types) -> Types.
update_types_2(V, [#c_tuple{}=P], Types) ->
- orddict:store(V, P, Types);
+ Types#{V=>P};
update_types_2(V, [#c_literal{val=Bool}], Types) when is_boolean(Bool) ->
- orddict:store(V, bool, Types);
+ Types#{V=>bool};
+update_types_2(V, [Type], Types) when is_atom(Type) ->
+ Types#{V=>Type};
update_types_2(_, _, Types) -> Types.
%% kill_types(V, Tdb) -> Tdb'
%% Kill any entries that references the variable,
%% either in the key or in the value.
-kill_types(V, [{V,_}|Tdb]) ->
- kill_types(V, Tdb);
-kill_types(V, [{_,#c_tuple{}=Tuple}=Entry|Tdb]) ->
+kill_types(V, Tdb) ->
+ maps:from_list(kill_types2(V,maps:to_list(Tdb))).
+
+kill_types2(V, [{V,_}|Tdb]) ->
+ kill_types2(V, Tdb);
+kill_types2(V, [{_,#c_tuple{}=Tuple}=Entry|Tdb]) ->
case core_lib:is_var_used(V, Tuple) of
- false -> [Entry|kill_types(V, Tdb)];
- true -> kill_types(V, Tdb)
+ false -> [Entry|kill_types2(V, Tdb)];
+ true -> kill_types2(V, Tdb)
end;
-kill_types(V, [{_,Atom}=Entry|Tdb]) when is_atom(Atom) ->
- [Entry|kill_types(V, Tdb)];
-kill_types(_, []) -> [].
+kill_types2(V, [{_,Atom}=Entry|Tdb]) when is_atom(Atom) ->
+ [Entry|kill_types2(V, Tdb)];
+kill_types2(_, []) -> [].
%% copy_type(DestVar, SrcVar, Tdb) -> Tdb'
%% If the SrcVar has a type, assign it to DestVar.
%%
copy_type(V, #c_var{name=Src}, Tdb) ->
- case orddict:find(Src, Tdb) of
- {ok,Type} -> orddict:store(V, Type, Tdb);
- error -> Tdb
+ case Tdb of
+ #{Src:=Type} -> Tdb#{V=>Type};
+ _ -> Tdb
end;
copy_type(_, _, Tdb) -> Tdb.
@@ -2763,15 +3245,15 @@ bsm_ensure_no_partition_2([#c_var{name=V}|Ps], N, G, Vstate, S) ->
bsm_ensure_no_partition_2([_|Ps], N, G, _, S) ->
bsm_ensure_no_partition_2(Ps, N-1, G, bin_argument_order, S).
-bsm_ensure_no_partition_after([#c_clause{pats=Ps}|Cs], Pos) ->
+bsm_ensure_no_partition_after([#c_clause{pats=Ps}=C|Cs], Pos) ->
case nth(Pos, Ps) of
#c_var{} ->
bsm_ensure_no_partition_after(Cs, Pos);
- P ->
- bsm_problem(P, bin_partition)
+ _ ->
+ bsm_problem(C, bin_partition)
end;
bsm_ensure_no_partition_after([], _) -> ok.
-
+
bsm_could_match_binary(#c_alias{pat=P}) -> bsm_could_match_binary(P);
bsm_could_match_binary(#c_cons{}) -> false;
bsm_could_match_binary(#c_tuple{}) -> false;
@@ -2805,11 +3287,11 @@ add_bin_opt_info(Core, Term) ->
end.
add_warning(Core, Term) ->
- case is_compiler_generated(Core) of
+ case should_suppress_warning(Core) of
true ->
ok;
false ->
- Anno = core_lib:get_anno(Core),
+ Anno = cerl:get_ann(Core),
Line = get_line(Anno),
File = get_file(Anno),
Key = {?MODULE,warnings},
@@ -2830,9 +3312,17 @@ get_file([{file,File}|_]) -> File;
get_file([_|T]) -> get_file(T);
get_file([]) -> "no_file". % should not happen
+should_suppress_warning(Core) ->
+ is_compiler_generated(Core) orelse
+ is_result_unwanted(Core).
+
is_compiler_generated(Core) ->
- Anno = core_lib:get_anno(Core),
- member(compiler_generated, Anno).
+ Ann = cerl:get_ann(Core),
+ member(compiler_generated, Ann).
+
+is_result_unwanted(Core) ->
+ Ann = cerl:get_ann(Core),
+ member(result_not_wanted, Ann).
get_warnings() ->
ordsets:from_list((erase({?MODULE,warnings}))).
@@ -2871,6 +3361,29 @@ format_error(nomatch_shadow) ->
"this clause cannot match because a previous clause always matches";
format_error(nomatch_guard) ->
"the guard for this clause evaluates to 'false'";
+format_error({nomatch_bit_syntax_truncated,Signess,Val,Sz}) ->
+ S = case Signess of
+ signed -> "a 'signed'";
+ unsigned -> "an 'unsigned'"
+ end,
+ F = "this clause cannot match because the value ~P"
+ " will not fit in ~s binary segment of size ~p",
+ flatten(io_lib:format(F, [Val,10,S,Sz]));
+format_error({nomatch_bit_syntax_unsigned,Val}) ->
+ F = "this clause cannot match because the negative value ~P"
+ " will never match the value of an 'unsigned' binary segment",
+ flatten(io_lib:format(F, [Val,10]));
+format_error({nomatch_bit_syntax_size,Sz}) ->
+ F = "this clause cannot match because '~P' is not a valid size for a binary segment",
+ flatten(io_lib:format(F, [Sz,10]));
+format_error({nomatch_bit_syntax_type,Val,Type}) ->
+ F = "this clause cannot match because '~P' is not of the"
+ " expected type '~p'",
+ flatten(io_lib:format(F, [Val,10,Type]));
+format_error({nomatch_bit_syntax_unicode,Val}) ->
+ F = "this clause cannot match because the value ~p"
+ " is not a valid Unicode code point",
+ flatten(io_lib:format(F, [Val]));
format_error(no_clause_match) ->
"no clause will ever match";
format_error(nomatch_clause_type) ->
@@ -2891,6 +3404,8 @@ format_error({no_effect,{erlang,F,A}}) ->
format_error(result_ignored) ->
"the result of the expression is ignored "
"(suppress the warning by assigning the expression to the _ variable)";
+format_error(invalid_call) ->
+ "invalid function call";
format_error(useless_building) ->
"a term is constructed, but never used";
format_error(bin_opt_alias) ->
@@ -2924,12 +3439,12 @@ format_error(bin_var_used_in_guard) ->
verify_scope(E, #sub{s=Scope}) ->
Free0 = cerl_trees:free_variables(E),
Free = [V || V <- Free0, not is_tuple(V)], %Ignore function names.
- case ordsets:is_subset(Free, gb_sets:to_list(Scope)) of
+ case ordsets:is_subset(Free, cerl_sets:to_list(Scope)) of
true -> true;
false ->
io:format("~p\n", [E]),
io:format("~p\n", [Free]),
- io:format("~p\n", [gb_sets:to_list(Scope)]),
+ io:format("~p\n", [cerl_sets:to_list(Scope)]),
false
end.
-endif.
diff --git a/lib/compiler/src/sys_core_fold_lists.erl b/lib/compiler/src/sys_core_fold_lists.erl
new file mode 100644
index 0000000000..9867fab46a
--- /dev/null
+++ b/lib/compiler/src/sys_core_fold_lists.erl
@@ -0,0 +1,387 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2015. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+%% Purpose : Inline high order lists functions from the lists module.
+
+-module(sys_core_fold_lists).
+
+-export([call/4]).
+
+-include("core_parse.hrl").
+
+%% We inline some very common higher order list operations.
+%% We use the same evaluation order as the library function.
+
+-spec call(cerl:c_call(), atom(), atom(), [cerl:cerl()]) ->
+ 'none' | cerl:cerl().
+
+call(#c_call{anno=Anno}, lists, all, [Arg1,Arg2]) ->
+ Loop = #c_var{name={'lists^all',1}},
+ F = #c_var{name='F'},
+ Xs = #c_var{name='Xs'},
+ X = #c_var{name='X'},
+ Err1 = #c_tuple{es=[#c_literal{val='case_clause'}, X]},
+ CC1 = #c_clause{pats=[#c_literal{val=true}], guard=#c_literal{val=true},
+ body=#c_apply{anno=Anno, op=Loop, args=[Xs]}},
+ CC2 = #c_clause{pats=[#c_literal{val=false}], guard=#c_literal{val=true},
+ body=#c_literal{val=false}},
+ CC3 = #c_clause{pats=[X], guard=#c_literal{val=true},
+ body=match_fail(Anno, Err1)},
+ C1 = #c_clause{pats=[#c_cons{hd=X, tl=Xs}], guard=#c_literal{val=true},
+ body=#c_case{arg=#c_apply{anno=Anno, op=F, args=[X]},
+ clauses = [CC1, CC2, CC3]}},
+ C2 = #c_clause{pats=[#c_literal{val=[]}],
+ guard=#c_call{module=#c_literal{val=erlang},
+ name=#c_literal{val=is_function},
+ args=[F, #c_literal{val=1}]},
+ body=#c_literal{val=true}},
+ Err2 = #c_tuple{es=[#c_literal{val='function_clause'}, F, Xs]},
+ C3 = #c_clause{pats=[Xs], guard=#c_literal{val=true},
+ body=match_fail([{function_name,{'lists^all',1}}|Anno], Err2)},
+ Fun = #c_fun{vars=[Xs],
+ body=#c_case{arg=Xs, clauses=[C1, C2, C3]}},
+ L = #c_var{name='L'},
+ #c_let{vars=[F, L], arg=#c_values{es=[Arg1, Arg2]},
+ body=#c_letrec{defs=[{Loop,Fun}],
+ body=#c_apply{anno=Anno, op=Loop, args=[L]}}};
+call(#c_call{anno=Anno}, lists, any, [Arg1,Arg2]) ->
+ Loop = #c_var{name={'lists^any',1}},
+ F = #c_var{name='F'},
+ Xs = #c_var{name='Xs'},
+ X = #c_var{name='X'},
+ Err1 = #c_tuple{es=[#c_literal{val='case_clause'}, X]},
+ CC1 = #c_clause{pats=[#c_literal{val=true}], guard=#c_literal{val=true},
+ body=#c_literal{val=true}},
+ CC2 = #c_clause{pats=[#c_literal{val=false}], guard=#c_literal{val=true},
+ body=#c_apply{anno=Anno, op=Loop, args=[Xs]}},
+ CC3 = #c_clause{pats=[X], guard=#c_literal{val=true},
+ body=match_fail(Anno, Err1)},
+ C1 = #c_clause{pats=[#c_cons{hd=X, tl=Xs}], guard=#c_literal{val=true},
+ body=#c_case{arg=#c_apply{anno=Anno, op=F, args=[X]},
+ clauses = [CC1, CC2, CC3]}},
+ C2 = #c_clause{pats=[#c_literal{val=[]}],
+ guard=#c_call{module=#c_literal{val=erlang},
+ name=#c_literal{val=is_function},
+ args=[F, #c_literal{val=1}]},
+ body=#c_literal{val=false}},
+ Err2 = #c_tuple{es=[#c_literal{val='function_clause'}, F, Xs]},
+ C3 = #c_clause{pats=[Xs], guard=#c_literal{val=true},
+ body=match_fail([{function_name,{'lists^any',1}}|Anno], Err2)},
+ Fun = #c_fun{vars=[Xs],
+ body=#c_case{arg=Xs, clauses=[C1, C2, C3]}},
+ L = #c_var{name='L'},
+ #c_let{vars=[F, L], arg=#c_values{es=[Arg1, Arg2]},
+ body=#c_letrec{defs=[{Loop,Fun}],
+ body=#c_apply{anno=Anno, op=Loop, args=[L]}}};
+call(#c_call{anno=Anno}, lists, foreach, [Arg1,Arg2]) ->
+ Loop = #c_var{name={'lists^foreach',1}},
+ F = #c_var{name='F'},
+ Xs = #c_var{name='Xs'},
+ X = #c_var{name='X'},
+ C1 = #c_clause{pats=[#c_cons{hd=X, tl=Xs}], guard=#c_literal{val=true},
+ body=#c_seq{arg=#c_apply{anno=Anno, op=F, args=[X]},
+ body=#c_apply{anno=Anno, op=Loop, args=[Xs]}}},
+ C2 = #c_clause{pats=[#c_literal{val=[]}],
+ guard=#c_call{module=#c_literal{val=erlang},
+ name=#c_literal{val=is_function},
+ args=[F, #c_literal{val=1}]},
+ body=#c_literal{val=ok}},
+ Err = #c_tuple{es=[#c_literal{val='function_clause'}, F, Xs]},
+ C3 = #c_clause{pats=[Xs], guard=#c_literal{val=true},
+ body=match_fail([{function_name,{'lists^foreach',1}}|Anno], Err)},
+ Fun = #c_fun{vars=[Xs],
+ body=#c_case{arg=Xs, clauses=[C1, C2, C3]}},
+ L = #c_var{name='L'},
+ #c_let{vars=[F, L], arg=#c_values{es=[Arg1, Arg2]},
+ body=#c_letrec{defs=[{Loop,Fun}],
+ body=#c_apply{anno=Anno, op=Loop, args=[L]}}};
+call(#c_call{anno=Anno}, lists, map, [Arg1,Arg2]) ->
+ Loop = #c_var{name={'lists^map',1}},
+ F = #c_var{name='F'},
+ Xs = #c_var{name='Xs'},
+ X = #c_var{name='X'},
+ H = #c_var{name='H'},
+ C1 = #c_clause{pats=[#c_cons{hd=X, tl=Xs}], guard=#c_literal{val=true},
+ body=#c_let{vars=[H], arg=#c_apply{anno=Anno,
+ op=F,
+ args=[X]},
+ body=#c_cons{hd=H,
+ anno=[compiler_generated],
+ tl=#c_apply{anno=Anno,
+ op=Loop,
+ args=[Xs]}}}},
+ C2 = #c_clause{pats=[#c_literal{val=[]}],
+ guard=#c_call{module=#c_literal{val=erlang},
+ name=#c_literal{val=is_function},
+ args=[F, #c_literal{val=1}]},
+ body=#c_literal{val=[]}},
+ Err = #c_tuple{es=[#c_literal{val='function_clause'}, F, Xs]},
+ C3 = #c_clause{pats=[Xs], guard=#c_literal{val=true},
+ body=match_fail([{function_name,{'lists^map',1}}|Anno], Err)},
+ Fun = #c_fun{vars=[Xs],
+ body=#c_case{arg=Xs, clauses=[C1, C2, C3]}},
+ L = #c_var{name='L'},
+ #c_let{vars=[F, L], arg=#c_values{es=[Arg1, Arg2]},
+ body=#c_letrec{defs=[{Loop,Fun}],
+ body=#c_apply{anno=Anno, op=Loop, args=[L]}}};
+call(#c_call{anno=Anno}, lists, flatmap, [Arg1,Arg2]) ->
+ Loop = #c_var{name={'lists^flatmap',1}},
+ F = #c_var{name='F'},
+ Xs = #c_var{name='Xs'},
+ X = #c_var{name='X'},
+ H = #c_var{name='H'},
+ C1 = #c_clause{pats=[#c_cons{hd=X, tl=Xs}], guard=#c_literal{val=true},
+ body=#c_let{vars=[H],
+ arg=#c_apply{anno=Anno, op=F, args=[X]},
+ body=#c_call{anno=[compiler_generated|Anno],
+ module=#c_literal{val=erlang},
+ name=#c_literal{val='++'},
+ args=[H,
+ #c_apply{anno=Anno,
+ op=Loop,
+ args=[Xs]}]}}},
+ C2 = #c_clause{pats=[#c_literal{val=[]}],
+ guard=#c_call{module=#c_literal{val=erlang},
+ name=#c_literal{val=is_function},
+ args=[F, #c_literal{val=1}]},
+ body=#c_literal{val=[]}},
+ Err = #c_tuple{es=[#c_literal{val='function_clause'}, F, Xs]},
+ C3 = #c_clause{pats=[Xs], guard=#c_literal{val=true},
+ body=match_fail([{function_name,{'lists^flatmap',1}}|Anno], Err)},
+ Fun = #c_fun{vars=[Xs],
+ body=#c_case{arg=Xs, clauses=[C1, C2, C3]}},
+ L = #c_var{name='L'},
+ #c_let{vars=[F, L], arg=#c_values{es=[Arg1, Arg2]},
+ body=#c_letrec{defs=[{Loop,Fun}],
+ body=#c_apply{anno=Anno, op=Loop, args=[L]}}};
+call(#c_call{anno=Anno}, lists, filter, [Arg1,Arg2]) ->
+ Loop = #c_var{name={'lists^filter',1}},
+ F = #c_var{name='F'},
+ Xs = #c_var{name='Xs'},
+ X = #c_var{name='X'},
+ B = #c_var{name='B'},
+ Err1 = #c_tuple{es=[#c_literal{val='case_clause'}, X]},
+ CC1 = #c_clause{pats=[#c_literal{val=true}], guard=#c_literal{val=true},
+ body=#c_cons{anno=[compiler_generated], hd=X, tl=Xs}},
+ CC2 = #c_clause{pats=[#c_literal{val=false}], guard=#c_literal{val=true},
+ body=Xs},
+ CC3 = #c_clause{pats=[X], guard=#c_literal{val=true},
+ body=match_fail(Anno, Err1)},
+ Case = #c_case{arg=B, clauses = [CC1, CC2, CC3]},
+ C1 = #c_clause{pats=[#c_cons{hd=X, tl=Xs}], guard=#c_literal{val=true},
+ body=#c_let{vars=[B],
+ arg=#c_apply{anno=Anno, op=F, args=[X]},
+ body=#c_let{vars=[Xs],
+ arg=#c_apply{anno=Anno,
+ op=Loop,
+ args=[Xs]},
+ body=Case}}},
+ C2 = #c_clause{pats=[#c_literal{val=[]}],
+ guard=#c_call{module=#c_literal{val=erlang},
+ name=#c_literal{val=is_function},
+ args=[F, #c_literal{val=1}]},
+ body=#c_literal{val=[]}},
+ Err2 = #c_tuple{es=[#c_literal{val='function_clause'}, F, Xs]},
+ C3 = #c_clause{pats=[Xs], guard=#c_literal{val=true},
+ body=match_fail([{function_name,{'lists^filter',1}}|Anno], Err2)},
+ Fun = #c_fun{vars=[Xs],
+ body=#c_case{arg=Xs, clauses=[C1, C2, C3]}},
+ L = #c_var{name='L'},
+ #c_let{vars=[F, L], arg=#c_values{es=[Arg1, Arg2]},
+ body=#c_letrec{defs=[{Loop,Fun}],
+ body=#c_apply{anno=Anno, op=Loop, args=[L]}}};
+call(#c_call{anno=Anno}, lists, foldl, [Arg1,Arg2,Arg3]) ->
+ Loop = #c_var{name={'lists^foldl',2}},
+ F = #c_var{name='F'},
+ Xs = #c_var{name='Xs'},
+ X = #c_var{name='X'},
+ A = #c_var{name='A'},
+ C1 = #c_clause{pats=[#c_cons{hd=X, tl=Xs}], guard=#c_literal{val=true},
+ body=#c_apply{anno=Anno,
+ op=Loop,
+ args=[Xs, #c_apply{anno=Anno,
+ op=F,
+ args=[X, A]}]}},
+ C2 = #c_clause{pats=[#c_literal{val=[]}],
+ guard=#c_call{module=#c_literal{val=erlang},
+ name=#c_literal{val=is_function},
+ args=[F, #c_literal{val=2}]},
+ body=A},
+ Err = #c_tuple{es=[#c_literal{val='function_clause'}, F, A, Xs]},
+ C3 = #c_clause{pats=[Xs], guard=#c_literal{val=true},
+ body=match_fail([{function_name,{'lists^foldl',2}}|Anno], Err)},
+ Fun = #c_fun{vars=[Xs, A],
+ body=#c_case{arg=Xs, clauses=[C1, C2, C3]}},
+ L = #c_var{name='L'},
+ #c_let{vars=[F, A, L], arg=#c_values{es=[Arg1, Arg2, Arg3]},
+ body=#c_letrec{defs=[{Loop,Fun}],
+ body=#c_apply{anno=Anno, op=Loop, args=[L, A]}}};
+call(#c_call{anno=Anno}, lists, foldr, [Arg1,Arg2,Arg3]) ->
+ Loop = #c_var{name={'lists^foldr',2}},
+ F = #c_var{name='F'},
+ Xs = #c_var{name='Xs'},
+ X = #c_var{name='X'},
+ A = #c_var{name='A'},
+ C1 = #c_clause{pats=[#c_cons{hd=X, tl=Xs}], guard=#c_literal{val=true},
+ body=#c_apply{anno=Anno,
+ op=F,
+ args=[X, #c_apply{anno=Anno,
+ op=Loop,
+ args=[Xs, A]}]}},
+ C2 = #c_clause{pats=[#c_literal{val=[]}],
+ guard=#c_call{module=#c_literal{val=erlang},
+ name=#c_literal{val=is_function},
+ args=[F, #c_literal{val=2}]},
+ body=A},
+ Err = #c_tuple{es=[#c_literal{val='function_clause'}, F, A, Xs]},
+ C3 = #c_clause{pats=[Xs], guard=#c_literal{val=true},
+ body=match_fail([{function_name,{'lists^foldr',2}}|Anno], Err)},
+ Fun = #c_fun{vars=[Xs, A],
+ body=#c_case{arg=Xs, clauses=[C1, C2, C3]}},
+ L = #c_var{name='L'},
+ #c_let{vars=[F, A, L], arg=#c_values{es=[Arg1, Arg2, Arg3]},
+ body=#c_letrec{defs=[{Loop,Fun}],
+ body=#c_apply{anno=Anno, op=Loop, args=[L, A]}}};
+call(#c_call{anno=Anno}, lists, mapfoldl, [Arg1,Arg2,Arg3]) ->
+ Loop = #c_var{name={'lists^mapfoldl',2}},
+ F = #c_var{name='F'},
+ Xs = #c_var{name='Xs'},
+ X = #c_var{name='X'},
+ Avar = #c_var{name='A'},
+ Match =
+ fun (A, P, E) ->
+ C1 = #c_clause{pats=[P], guard=#c_literal{val=true}, body=E},
+ Err = #c_tuple{es=[#c_literal{val='badmatch'}, X]},
+ C2 = #c_clause{pats=[X], guard=#c_literal{val=true},
+ body=match_fail(Anno, Err)},
+ #c_case{arg=A, clauses=[C1, C2]}
+ end,
+ C1 = #c_clause{pats=[#c_cons{hd=X, tl=Xs}], guard=#c_literal{val=true},
+ body=Match(#c_apply{anno=Anno, op=F, args=[X, Avar]},
+ #c_tuple{es=[X, Avar]},
+%%% Tuple passing version
+ Match(#c_apply{anno=Anno,
+ op=Loop,
+ args=[Xs, Avar]},
+ #c_tuple{es=[Xs, Avar]},
+ #c_tuple{anno=[compiler_generated],
+ es=[#c_cons{anno=[compiler_generated],
+ hd=X, tl=Xs},
+ Avar]})
+%%% Multiple-value version
+%%% #c_let{vars=[Xs,A],
+%%% %% The tuple here will be optimised
+%%% %% away later; no worries.
+%%% arg=#c_apply{op=Loop, args=[Xs, A]},
+%%% body=#c_values{es=[#c_cons{hd=X, tl=Xs},
+%%% A]}}
+ )},
+ C2 = #c_clause{pats=[#c_literal{val=[]}],
+ guard=#c_call{module=#c_literal{val=erlang},
+ name=#c_literal{val=is_function},
+ args=[F, #c_literal{val=2}]},
+%%% Tuple passing version
+ body=#c_tuple{anno=[compiler_generated],
+ es=[#c_literal{val=[]}, Avar]}},
+%%% Multiple-value version
+%%% body=#c_values{es=[#c_literal{val=[]}, A]}},
+ Err = #c_tuple{es=[#c_literal{val='function_clause'}, F, Avar, Xs]},
+ C3 = #c_clause{pats=[Xs], guard=#c_literal{val=true},
+ body=match_fail([{function_name,{'lists^mapfoldl',2}}|Anno], Err)},
+ Fun = #c_fun{vars=[Xs, Avar],
+ body=#c_case{arg=Xs, clauses=[C1, C2, C3]}},
+ L = #c_var{name='L'},
+ #c_let{vars=[F, Avar, L], arg=#c_values{es=[Arg1, Arg2, Arg3]},
+ body=#c_letrec{defs=[{Loop,Fun}],
+%%% Tuple passing version
+ body=#c_apply{anno=Anno,
+ op=Loop,
+ args=[L, Avar]}}};
+%%% Multiple-value version
+%%% body=#c_let{vars=[Xs, A],
+%%% arg=#c_apply{op=Loop,
+%%% args=[L, A]},
+%%% body=#c_tuple{es=[Xs, A]}}}};
+call(#c_call{anno=Anno}, lists, mapfoldr, [Arg1,Arg2,Arg3]) ->
+ Loop = #c_var{name={'lists^mapfoldr',2}},
+ F = #c_var{name='F'},
+ Xs = #c_var{name='Xs'},
+ X = #c_var{name='X'},
+ Avar = #c_var{name='A'},
+ Match =
+ fun (A, P, E) ->
+ C1 = #c_clause{pats=[P], guard=#c_literal{val=true}, body=E},
+ Err = #c_tuple{es=[#c_literal{val='badmatch'}, X]},
+ C2 = #c_clause{pats=[X], guard=#c_literal{val=true},
+ body=match_fail(Anno, Err)},
+ #c_case{arg=A, clauses=[C1, C2]}
+ end,
+ C1 = #c_clause{pats=[#c_cons{hd=X, tl=Xs}], guard=#c_literal{val=true},
+%%% Tuple passing version
+ body=Match(#c_apply{anno=Anno,
+ op=Loop,
+ args=[Xs, Avar]},
+ #c_tuple{es=[Xs, Avar]},
+ Match(#c_apply{anno=Anno, op=F, args=[X, Avar]},
+ #c_tuple{es=[X, Avar]},
+ #c_tuple{anno=[compiler_generated],
+ es=[#c_cons{anno=[compiler_generated],
+ hd=X, tl=Xs}, Avar]}))
+%%% Multiple-value version
+%%% body=#c_let{vars=[Xs,A],
+%%% %% The tuple will be optimised away
+%%% arg=#c_apply{op=Loop, args=[Xs, A]},
+%%% body=Match(#c_apply{op=F, args=[X, A]},
+%%% #c_tuple{es=[X, A]},
+%%% #c_values{es=[#c_cons{hd=X, tl=Xs},
+%%% A]})}
+ },
+ C2 = #c_clause{pats=[#c_literal{val=[]}],
+ guard=#c_call{module=#c_literal{val=erlang},
+ name=#c_literal{val=is_function},
+ args=[F, #c_literal{val=2}]},
+%%% Tuple passing version
+ body=#c_tuple{anno=[compiler_generated],
+ es=[#c_literal{val=[]}, Avar]}},
+%%% Multiple-value version
+%%% body=#c_values{es=[#c_literal{val=[]}, A]}},
+ Err = #c_tuple{es=[#c_literal{val='function_clause'}, F, Avar, Xs]},
+ C3 = #c_clause{pats=[Xs], guard=#c_literal{val=true},
+ body=match_fail([{function_name,{'lists^mapfoldr',2}}|Anno], Err)},
+ Fun = #c_fun{vars=[Xs, Avar],
+ body=#c_case{arg=Xs, clauses=[C1, C2, C3]}},
+ L = #c_var{name='L'},
+ #c_let{vars=[F, Avar, L], arg=#c_values{es=[Arg1, Arg2, Arg3]},
+ body=#c_letrec{defs=[{Loop,Fun}],
+%%% Tuple passing version
+ body=#c_apply{anno=Anno,
+ op=Loop,
+ args=[L, Avar]}}};
+%%% Multiple-value version
+%%% body=#c_let{vars=[Xs, A],
+%%% arg=#c_apply{op=Loop,
+%%% args=[L, A]},
+%%% body=#c_tuple{es=[Xs, A]}}}};
+call(_, _, _, _) ->
+ none.
+
+match_fail(Ann, Arg) ->
+ Name = cerl:abstract(match_fail),
+ Args = [Arg],
+ cerl:ann_c_primop(Ann, Name, Args).
diff --git a/lib/compiler/src/sys_core_inline.erl b/lib/compiler/src/sys_core_inline.erl
index 9f93acb666..8c1f69d5de 100644
--- a/lib/compiler/src/sys_core_inline.erl
+++ b/lib/compiler/src/sys_core_inline.erl
@@ -1,18 +1,19 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2000-2010. All Rights Reserved.
+%% Copyright Ericsson AB 2000-2016. All Rights Reserved.
%%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
%%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
%%
%% %CopyrightEnd%
%%
@@ -195,10 +196,10 @@ kill_id_anns(Body) ->
A = kill_id_anns_1(A0),
CFun#c_fun{anno=A};
(Expr) ->
- %% Mark everything as compiler generated to suppress
- %% bogus warnings.
- A = compiler_generated(core_lib:get_anno(Expr)),
- core_lib:set_anno(Expr, A)
+ %% Mark everything as compiler generated to
+ %% suppress bogus warnings.
+ A = compiler_generated(cerl:get_ann(Expr)),
+ cerl:set_ann(Expr, A)
end, Body).
kill_id_anns_1([{'id',_}|As]) ->
diff --git a/lib/compiler/src/sys_pre_attributes.erl b/lib/compiler/src/sys_pre_attributes.erl
index a6b7274b07..bc93c85989 100644
--- a/lib/compiler/src/sys_pre_attributes.erl
+++ b/lib/compiler/src/sys_pre_attributes.erl
@@ -1,18 +1,19 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1998-2009. All Rights Reserved.
+%% Copyright Ericsson AB 1998-2016. All Rights Reserved.
%%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
%%
%% %CopyrightEnd%
%%
diff --git a/lib/compiler/src/sys_pre_expand.erl b/lib/compiler/src/sys_pre_expand.erl
index 7d918a55ed..7ab4e1845c 100644
--- a/lib/compiler/src/sys_pre_expand.erl
+++ b/lib/compiler/src/sys_pre_expand.erl
@@ -1,18 +1,19 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1996-2012. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2015. All Rights Reserved.
%%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
%%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
%%
%% %CopyrightEnd%
%%
@@ -28,30 +29,26 @@
%% Main entry point.
-export([module/2]).
--import(ordsets, [from_list/1,union/2]).
-import(lists, [member/2,foldl/3,foldr/3]).
--include("../include/erl_bits.hrl").
+-type fa() :: {atom(), arity()}.
-record(expand, {module=[], %Module name
exports=[], %Exports
- imports=[], %Imports
- compile=[], %Compile flags
attributes=[], %Attributes
callbacks=[], %Callbacks
- defined, %Defined functions (gb_set)
+ optional_callbacks=[] :: [fa()], %Optional callbacks
vcount=0, %Variable counter
func=[], %Current function
arity=[], %Arity for current function
- fcount=0, %Local fun count
- bitdefault,
- bittypes
+ fcount=0, %Local fun count
+ ctype %Call type map
}).
%% module(Forms, CompileOptions)
%% {ModuleName,Exports,TransformedForms,CompileOptions'}
-%% Expand the forms in one module. N.B.: the lists of predefined
-%% exports and imports are really ordsets!
+%% Expand the forms in one module.
+%%
%% CompileOptions is augmented with options from -compile attributes.
module(Fs0, Opts0) ->
@@ -64,63 +61,87 @@ module(Fs0, Opts0) ->
%% Set pre-defined exported functions.
PreExp = [{module_info,0},{module_info,1}],
+ %% Build the set of defined functions and the initial call
+ %% type map.
+ Defined = defined_functions(Fs, PreExp),
+ Ctype = maps:from_list([{K,local} || K <- Defined]),
+
%% Build initial expand record.
St0 = #expand{exports=PreExp,
- compile=Opts,
- defined=PreExp,
- bitdefault = erl_bits:system_bitdefault(),
- bittypes = erl_bits:system_bittypes()
+ ctype=Ctype
},
+
%% Expand the functions.
- {Tfs,St1} = forms(Fs, define_functions(Fs, St0)),
+ {Tfs,St1} = forms(Fs, St0),
+
%% Get the correct list of exported functions.
- Exports = case member(export_all, St1#expand.compile) of
- true -> gb_sets:to_list(St1#expand.defined);
+ Exports = case member(export_all, Opts) of
+ true -> Defined;
false -> St1#expand.exports
end,
+ St2 = St1#expand{exports=Exports,ctype=undefined},
+
%% Generate all functions from stored info.
- {Ats,St3} = module_attrs(St1#expand{exports = Exports}),
+ {Ats,St3} = module_attrs(St2),
{Mfs,St4} = module_predef_funcs(St3),
{St4#expand.module, St4#expand.exports, Ats ++ Tfs ++ Mfs,
- St4#expand.compile}.
+ Opts}.
compiler_options(Forms) ->
lists:flatten([C || {attribute,_,compile,C} <- Forms]).
-%% define_function(Form, State) -> State.
+%% defined_function(Forms, Predef) -> Functions.
%% Add function to defined if form is a function.
-define_functions(Forms, #expand{defined=Predef}=St) ->
+defined_functions(Forms, Predef) ->
Fs = foldl(fun({function,_,N,A,_Cs}, Acc) -> [{N,A}|Acc];
(_, Acc) -> Acc
end, Predef, Forms),
- St#expand{defined=gb_sets:from_list(Fs)}.
+ ordsets:from_list(Fs).
module_attrs(#expand{attributes=Attributes}=St) ->
Attrs = [{attribute,Line,Name,Val} || {Name,Line,Val} <- Attributes],
Callbacks = [Callback || {_,_,callback,_}=Callback <- Attrs],
- {Attrs,St#expand{callbacks=Callbacks}}.
-
-module_predef_funcs(St) ->
- {Mpf1,St1}=module_predef_func_beh_info(St),
- {Mpf2,St2}=module_predef_funcs_mod_info(St1),
- {Mpf1++Mpf2,St2}.
+ OptionalCallbacks = get_optional_callbacks(Attrs),
+ {Attrs,St#expand{callbacks=Callbacks,
+ optional_callbacks=OptionalCallbacks}}.
+
+get_optional_callbacks(Attrs) ->
+ L = [O ||
+ {attribute, _, optional_callbacks, O} <- Attrs,
+ is_fa_list(O)],
+ lists:append(L).
+
+is_fa_list([{FuncName, Arity}|L])
+ when is_atom(FuncName), is_integer(Arity), Arity >= 0 ->
+ is_fa_list(L);
+is_fa_list([]) -> true;
+is_fa_list(_) -> false.
+
+module_predef_funcs(St0) ->
+ {Mpf1,St1} = module_predef_func_beh_info(St0),
+ Mpf2 = module_predef_funcs_mod_info(St1),
+ Mpf = [erl_parse:new_anno(F) || F <- Mpf1++Mpf2],
+ {Mpf,St1}.
module_predef_func_beh_info(#expand{callbacks=[]}=St) ->
{[], St};
-module_predef_func_beh_info(#expand{callbacks=Callbacks,defined=Defined,
+module_predef_func_beh_info(#expand{callbacks=Callbacks,
+ optional_callbacks=OptionalCallbacks,
exports=Exports}=St) ->
- PreDef=[{behaviour_info,1}],
- PreExp=PreDef,
- {[gen_beh_info(Callbacks)],
- St#expand{defined=gb_sets:union(gb_sets:from_list(PreDef), Defined),
- exports=union(from_list(PreExp), Exports)}}.
+ PreDef0 = [{behaviour_info,1}],
+ PreDef = ordsets:from_list(PreDef0),
+ {[gen_beh_info(Callbacks, OptionalCallbacks)],
+ St#expand{exports=ordsets:union(PreDef, Exports)}}.
-gen_beh_info(Callbacks) ->
+gen_beh_info(Callbacks, OptionalCallbacks) ->
List = make_list(Callbacks),
+ OptionalList = make_optional_list(OptionalCallbacks),
{function,0,behaviour_info,1,
[{clause,0,[{atom,0,callbacks}],[],
- [List]}]}.
+ [List]},
+ {clause,0,[{atom,0,optional_callbacks}],[],
+ [OptionalList]}]}.
make_list([]) -> {nil,0};
make_list([{_,_,_,[{{Name,Arity},_}]}|Rest]) ->
@@ -130,20 +151,24 @@ make_list([{_,_,_,[{{Name,Arity},_}]}|Rest]) ->
{integer,0,Arity}]},
make_list(Rest)}.
-module_predef_funcs_mod_info(St) ->
- PreDef = [{module_info,0},{module_info,1}],
- PreExp = PreDef,
- {[{function,0,module_info,0,
- [{clause,0,[],[],
+make_optional_list([]) -> {nil,0};
+make_optional_list([{Name,Arity}|Rest]) ->
+ {cons,0,
+ {tuple,0,
+ [{atom,0,Name},
+ {integer,0,Arity}]},
+ make_optional_list(Rest)}.
+
+module_predef_funcs_mod_info(#expand{module=Mod}) ->
+ ModAtom = {atom,0,Mod},
+ [{function,0,module_info,0,
+ [{clause,0,[],[],
[{call,0,{remote,0,{atom,0,erlang},{atom,0,get_module_info}},
- [{atom,0,St#expand.module}]}]}]},
- {function,0,module_info,1,
- [{clause,0,[{var,0,'X'}],[],
+ [ModAtom]}]}]},
+ {function,0,module_info,1,
+ [{clause,0,[{var,0,'X'}],[],
[{call,0,{remote,0,{atom,0,erlang},{atom,0,get_module_info}},
- [{atom,0,St#expand.module},{var,0,'X'}]}]}]}],
- St#expand{defined=gb_sets:union(gb_sets:from_list(PreDef),
- St#expand.defined),
- exports=union(from_list(PreExp), St#expand.exports)}}.
+ [ModAtom,{var,0,'X'}]}]}]}].
%% forms(Forms, State) ->
%% {TransformedForms,State'}
@@ -170,7 +195,8 @@ attribute(module, Module, _L, St) ->
true = is_atom(Module),
St#expand{module=Module};
attribute(export, Es, _L, St) ->
- St#expand{exports=union(from_list(Es), St#expand.exports)};
+ St#expand{exports=ordsets:union(ordsets:from_list(Es),
+ St#expand.exports)};
attribute(import, Is, _L, St) ->
import(Is, St);
attribute(compile, _C, _L, St) ->
@@ -205,8 +231,6 @@ head(As, St) -> pattern_list(As, St).
%% {TransformedPattern,State'}
%%
-pattern({var,_,'_'}=Var, St) -> %Ignore anonymous variable.
- {Var,St};
pattern({var,_,_}=Var, St) ->
{Var,St};
pattern({char,_,_}=Char, St) ->
@@ -228,6 +252,22 @@ pattern({cons,Line,H,T}, St0) ->
pattern({tuple,Line,Ps}, St0) ->
{TPs,St1} = pattern_list(Ps, St0),
{{tuple,Line,TPs},St1};
+pattern({map,Line,Ps}, St0) ->
+ {TPs,St1} = pattern_list(Ps, St0),
+ {{map,Line,TPs},St1};
+pattern({map_field_exact,Line,K0,V0}, St0) ->
+ %% Key should be treated as an expression
+ %% but since expressions are not allowed yet,
+ %% process it through pattern .. and handle assoc
+ %% (normalise unary op integer -> integer)
+ {K,St1} = pattern(K0, St0),
+ {V,St2} = pattern(V0, St1),
+ {{map_field_exact,Line,K,V},St2};
+pattern({map_field_assoc,Line,K0,V0}, St0) ->
+ %% when keys are Maps
+ {K,St1} = pattern(K0, St0),
+ {V,St2} = pattern(V0, St1),
+ {{map_field_assoc,Line,K,V},St2};
%%pattern({struct,Line,Tag,Ps}, St0) ->
%% {TPs,TPsvs,St1} = pattern_list(Ps, St0),
%% {{tuple,Line,[{atom,Line,Tag}|TPs]},TPsvs,St1};
@@ -321,6 +361,21 @@ expr({tuple,Line,Es0}, St0) ->
%%expr({struct,Line,Tag,Es0}, Vs, St0) ->
%% {Es1,Esvs,Esus,St1} = expr_list(Es0, Vs, St0),
%% {{tuple,Line,[{atom,Line,Tag}|Es1]},Esvs,Esus,St1};
+expr({map,Line,Es0}, St0) ->
+ {Es1,St1} = expr_list(Es0, St0),
+ {{map,Line,Es1},St1};
+expr({map,Line,E0,Es0}, St0) ->
+ {E1,St1} = expr(E0, St0),
+ {Es1,St2} = expr_list(Es0, St1),
+ {{map,Line,E1,Es1},St2};
+expr({map_field_assoc,Line,K0,V0}, St0) ->
+ {K,St1} = expr(K0, St0),
+ {V,St2} = expr(V0, St1),
+ {{map_field_assoc,Line,K,V},St2};
+expr({map_field_exact,Line,K0,V0}, St0) ->
+ {K,St1} = expr(K0, St0),
+ {V,St2} = expr(V0, St1),
+ {{map_field_exact,Line,K,V},St2};
expr({bin,Line,Es0}, St0) ->
{Es1,St1} = expr_bin(Es0, St0),
{{bin,Line,Es1},St1};
@@ -328,40 +383,36 @@ expr({block,Line,Es0}, St0) ->
{Es,St1} = exprs(Es0, St0),
{{block,Line,Es},St1};
expr({'if',Line,Cs0}, St0) ->
- {Cs,St1} = icr_clauses(Cs0, St0),
+ {Cs,St1} = clauses(Cs0, St0),
{{'if',Line,Cs},St1};
expr({'case',Line,E0,Cs0}, St0) ->
{E,St1} = expr(E0, St0),
- {Cs,St2} = icr_clauses(Cs0, St1),
+ {Cs,St2} = clauses(Cs0, St1),
{{'case',Line,E,Cs},St2};
expr({'receive',Line,Cs0}, St0) ->
- {Cs,St1} = icr_clauses(Cs0, St0),
+ {Cs,St1} = clauses(Cs0, St0),
{{'receive',Line,Cs},St1};
expr({'receive',Line,Cs0,To0,ToEs0}, St0) ->
{To,St1} = expr(To0, St0),
{ToEs,St2} = exprs(ToEs0, St1),
- {Cs,St3} = icr_clauses(Cs0, St2),
+ {Cs,St3} = clauses(Cs0, St2),
{{'receive',Line,Cs,To,ToEs},St3};
expr({'fun',Line,Body}, St) ->
fun_tq(Line, Body, St);
+expr({named_fun,Line,Name,Cs}, St) ->
+ fun_tq(Line, Cs, St, Name);
expr({call,Line,{atom,La,N}=Atom,As0}, St0) ->
{As,St1} = expr_list(As0, St0),
Ar = length(As),
- case defined(N,Ar,St1) of
- true ->
+ Key = {N,Ar},
+ case St1#expand.ctype of
+ #{Key:=local} ->
{{call,Line,Atom,As},St1};
+ #{Key:={imported,Mod}} ->
+ {{call,Line,{remote,La,{atom,La,Mod},Atom},As},St1};
_ ->
- case imported(N, Ar, St1) of
- {yes,Mod} ->
- {{call,Line,{remote,La,{atom,La,Mod},Atom},As},St1};
- no ->
- case erl_internal:bif(N, Ar) of
- true ->
- {{call,Line,{remote,La,{atom,La,erlang},Atom},As},St1};
- false -> %% This should have been handled by erl_lint
- {{call,Line,Atom,As},St1}
- end
- end
+ true = erl_internal:bif(N, Ar),
+ {{call,Line,{remote,La,{atom,La,erlang},Atom},As},St1}
end;
expr({call,Line,{remote,Lr,M0,F},As0}, St0) ->
{[M1,F1|As1],St1} = expr_list([M0,F|As0], St0),
@@ -371,12 +422,11 @@ expr({call,Line,F,As0}, St0) ->
{{call,Line,Fun1,As1},St1};
expr({'try',Line,Es0,Scs0,Ccs0,As0}, St0) ->
{Es1,St1} = exprs(Es0, St0),
- {Scs1,St2} = icr_clauses(Scs0, St1),
- {Ccs1,St3} = icr_clauses(Ccs0, St2),
+ {Scs1,St2} = clauses(Scs0, St1),
+ {Ccs1,St3} = clauses(Ccs0, St2),
{As1,St4} = exprs(As0, St3),
{{'try',Line,Es1,Scs1,Ccs1,As1},St4};
expr({'catch',Line,E0}, St0) ->
- %% Catch exports no new variables.
{E,St1} = expr(E0, St0),
{{'catch',Line,E},St1};
expr({match,Line,P0,E0}, St0) ->
@@ -397,21 +447,6 @@ expr_list([E0|Es0], St0) ->
{[E|Es],St2};
expr_list([], St) -> {[],St}.
-%% icr_clauses([Clause], State) -> {[TransformedClause],State'}
-%% Be very careful here to return the variables that are really used
-%% and really new.
-
-icr_clauses([], St) -> {[],St};
-icr_clauses(Clauses, St) -> icr_clauses2(Clauses, St).
-
-icr_clauses2([{clause,Line,H0,G0,B0}|Cs0], St0) ->
- {H,St1} = head(H0, St0),
- {G,St2} = guard(G0, St1),
- {B,St3} = exprs(B0, St2),
- {Cs,St4} = icr_clauses2(Cs0, St3),
- {[{clause,Line,H,G,B}|Cs],St4};
-icr_clauses2([], St) -> {[],St}.
-
%% lc_tq(Line, Qualifiers, State) ->
%% {[TransQual],State'}
@@ -427,16 +462,9 @@ lc_tq(Line, [{b_generate,Lg,P0,G0}|Qs0], St0) ->
{Qs1,St3} = lc_tq(Line, Qs0, St2),
{[{b_generate,Lg,P1,G1}|Qs1],St3};
lc_tq(Line, [F0 | Qs0], St0) ->
- case erl_lint:is_guard_test(F0) of
- true ->
- {F1,St1} = guard_test(F0, St0),
- {Qs1,St2} = lc_tq(Line, Qs0, St1),
- {[F1|Qs1],St2};
- false ->
- {F1,St1} = expr(F0, St0),
- {Qs1,St2} = lc_tq(Line, Qs0, St1),
- {[F1 | Qs1],St2}
- end;
+ {F1,St1} = expr(F0, St0),
+ {Qs1,St2} = lc_tq(Line, Qs0, St1),
+ {[F1|Qs1],St2};
lc_tq(_Line, [], St0) ->
{[],St0}.
@@ -468,26 +496,26 @@ fun_tq(L, {function,M,F,A}, St) when is_atom(M), is_atom(F), is_integer(A) ->
fun_tq(Lf, {function,_,_,_}=ExtFun, St) ->
{{'fun',Lf,ExtFun},St};
fun_tq(Lf, {clauses,Cs0}, St0) ->
- {Cs1,St1} = fun_clauses(Cs0, St0),
+ {Cs1,St1} = clauses(Cs0, St0),
{Fname,St2} = new_fun_name(St1),
%% Set dummy values for Index and Uniq -- the real values will
%% be assigned by beam_asm.
Index = Uniq = 0,
{{'fun',Lf,{clauses,Cs1},{Index,Uniq,Fname}},St2}.
-fun_clauses([{clause,L,H0,G0,B0}|Cs0], St0) ->
- {H,St1} = head(H0, St0),
- {G,St2} = guard(G0, St1),
- {B,St3} = exprs(B0, St2),
- {Cs,St4} = fun_clauses(Cs0, St3),
- {[{clause,L,H,G,B}|Cs],St4};
-fun_clauses([], St) -> {[],St}.
+fun_tq(Line, Cs0, St0, Name) ->
+ {Cs1,St1} = clauses(Cs0, St0),
+ {Fname,St2} = new_fun_name(St1, Name),
+ {{named_fun,Line,Name,Cs1,{0,0,Fname}},St2}.
%% new_fun_name(State) -> {FunName,State}.
-new_fun_name(#expand{func=F,arity=A,fcount=I}=St) ->
+new_fun_name(St) ->
+ new_fun_name(St, 'fun').
+
+new_fun_name(#expand{func=F,arity=A,fcount=I}=St, FName) ->
Name = "-" ++ atom_to_list(F) ++ "/" ++ integer_to_list(A)
- ++ "-fun-" ++ integer_to_list(I) ++ "-",
+ ++ "-" ++ atom_to_list(FName) ++ "-" ++ integer_to_list(I) ++ "-",
{list_to_atom(Name),St#expand{fcount=I+1}}.
%% pattern_bin([Element], State) -> {[Element],[Variable],[UsedVar],State}.
@@ -504,7 +532,6 @@ pattern_element({bin_element,Line,Expr0,Size0,Type0}, {Es,St0}) ->
{[{bin_element,Line,Expr,Size,Type}|Es],St2}.
pat_bit_size(default, St) -> {default,St};
-pat_bit_size({atom,_La,all}=All, St) -> {All,St};
pat_bit_size({var,_Lv,_V}=Var, St) -> {Var,St};
pat_bit_size(Size, St) ->
Line = element(2, Size),
@@ -525,8 +552,7 @@ coerce_to_float({integer,L,I}=E, [float|_]) ->
try
{float,L,float(I)}
catch
- error:badarg -> E;
- error:badarith -> E
+ error:badarg -> E
end;
coerce_to_float(E, _) -> E.
@@ -580,25 +606,11 @@ string_to_conses(Line, Cs, Tail) ->
%% import(Line, Imports, State) ->
%% State'
-%% imported(Name, Arity, State) ->
-%% {yes,Module} | no
-%% Handle import declarations and test for imported functions. No need to
-%% check when building imports as code is correct.
+%% Handle import declarations.
-import({Mod,Fs}, St) ->
+import({Mod,Fs}, #expand{ctype=Ctype0}=St) ->
true = is_atom(Mod),
- Mfs = from_list(Fs),
- St#expand{imports=add_imports(Mod, Mfs, St#expand.imports)}.
-
-add_imports(Mod, [F|Fs], Is) ->
- add_imports(Mod, Fs, orddict:store(F, Mod, Is));
-add_imports(_, [], Is) -> Is.
-
-imported(F, A, St) ->
- case orddict:find({F,A}, St#expand.imports) of
- {ok,Mod} -> {yes,Mod};
- error -> no
- end.
-
-defined(F, A, St) ->
- gb_sets:is_element({F,A}, St#expand.defined).
+ Ctype = foldl(fun(F, A) ->
+ A#{F=>{imported,Mod}}
+ end, Ctype0, Fs),
+ St#expand{ctype=Ctype}.
diff --git a/lib/compiler/src/v3_codegen.erl b/lib/compiler/src/v3_codegen.erl
index 6a13495523..4df1aadd0a 100644
--- a/lib/compiler/src/v3_codegen.erl
+++ b/lib/compiler/src/v3_codegen.erl
@@ -1,18 +1,19 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1999-2012. All Rights Reserved.
+%% Copyright Ericsson AB 1999-2016. All Rights Reserved.
%%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
%%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
%%
%% %CopyrightEnd%
%%
@@ -43,7 +44,7 @@
-export([module/2]).
-import(lists, [member/2,keymember/3,keysort/2,keydelete/3,
- append/1,map/2,flatmap/2,filter/2,foldl/3,foldr/3,mapfoldl/3,
+ append/1,flatmap/2,filter/2,foldl/3,foldr/3,mapfoldl/3,
sort/1,reverse/1,reverse/2]).
-import(v3_life, [vdb_find/2]).
@@ -57,8 +58,7 @@
break, %Break label
recv, %Receive label
is_top_block, %Boolean: top block or not
- functable=gb_trees:empty(), %Gb tree of local functions:
- % {{Name,Arity},Label}
+ functable=#{}, %Map of local functions: {Name,Arity}=>Label
in_catch=false, %Inside a catch or not.
need_frame, %Need a stack frame.
ultimate_failure %Label for ultimate match failure.
@@ -69,10 +69,8 @@
stk=[], %Stack table
res=[]}). %Reserved regs: [{reserved,I,V}]
-module({Mod,Exp,Attr,Forms}, Options) ->
- put(?MODULE, Options),
+module({Mod,Exp,Attr,Forms}, _Options) ->
{Fs,St} = functions(Forms, {atom,Mod}),
- erase(?MODULE),
{ok,{Mod,Exp,Attr,Fs,St#cg.lcount}}.
functions(Forms, AtomMod) ->
@@ -123,24 +121,15 @@ cg_fun(Les, Hvs, Vdb, AtomMod, NameArity, Anno, St0) ->
put_reg(V, Reg)
end, [], Hvs),
stk=[]}, 0, Vdb),
- {B0,_Aft,St} = cg_list(Les, 0, Vdb, Bef,
+ {B,_Aft,St} = cg_list(Les, 0, Vdb, Bef,
St3#cg{bfail=0,
ultimate_failure=UltimateMatchFail,
is_top_block=true}),
- B = fix_bs_match_strings(B0),
{Name,Arity} = NameArity,
Asm = [{label,Fi},line(Anno),{func_info,AtomMod,{atom,Name},Arity},
{label,Fl}|B++[{label,UltimateMatchFail},if_end]],
{Asm,Fl,St}.
-fix_bs_match_strings([{test,bs_match_string,F,[Ctx,BinList]}|Is])
- when is_list(BinList) ->
- I = {test,bs_match_string,F,[Ctx,list_to_bitstring(BinList)]},
- [I|fix_bs_match_strings(Is)];
-fix_bs_match_strings([I|Is]) ->
- [I|fix_bs_match_strings(Is)];
-fix_bs_match_strings([]) -> [].
-
%% cg(Lkexpr, Vdb, StackReg, State) -> {[Ainstr],StackReg,State}.
%% Generate code for a kexpr.
%% Split function into two steps for clarity, not efficiency.
@@ -210,6 +199,8 @@ need_heap_0([], H, Acc) ->
need_heap_1(#l{ke={set,_,{binary,_}},i=I}, H) ->
{need_heap_need(I, H),0};
+need_heap_1(#l{ke={set,_,{map,_,_,_}},i=I}, H) ->
+ {need_heap_need(I, H),0};
need_heap_1(#l{ke={set,_,Val}}, H) ->
%% Just pass through adding to needed heap.
{[],H + case Val of
@@ -453,8 +444,11 @@ basic_block([Le|Les], Acc) ->
end;
no_block -> {reverse(Acc, [Le]),Les}
end.
+
+%% sets that may garbage collect are not allowed in basic blocks.
collect_block({set,_,{binary,_}}) -> no_block;
+collect_block({set,_,{map,_,_,_}}) -> no_block;
collect_block({set,_,_}) -> include;
collect_block({call,{var,_}=Var,As,_Rs}) -> {block_end,As++[Var]};
collect_block({call,Func,As,_Rs}) -> {block_end,As++func_vars(Func)};
@@ -581,7 +575,7 @@ top_level_block(Keis, Bef, MaxRegs, _St) ->
(return) ->
[{deallocate,FrameSz},return];
(Tuple) when is_tuple(Tuple) ->
- [turn_yregs(tuple_size(Tuple), Tuple, MaxY)];
+ [turn_yregs(Tuple, MaxY)];
(Other) ->
[Other]
end, Keis),
@@ -593,15 +587,49 @@ top_level_block(Keis, Bef, MaxRegs, _St) ->
%% catches work. The code generation algorithm gives a lower register
%% number to the outer catch, which is wrong.
-turn_yregs(0, Tp, _) -> Tp;
-turn_yregs(El, Tp, MaxY) when element(1, element(El, Tp)) =:= yy ->
- turn_yregs(El-1, setelement(El, Tp, {y,MaxY-element(2, element(El, Tp))}), MaxY);
-turn_yregs(El, Tp, MaxY) when is_list(element(El, Tp)) ->
- New = map(fun ({yy,YY}) -> {y,MaxY-YY};
- (Other) -> Other end, element(El, Tp)),
- turn_yregs(El-1, setelement(El, Tp, New), MaxY);
-turn_yregs(El, Tp, MaxY) ->
- turn_yregs(El-1, Tp, MaxY).
+turn_yregs({call,_,_}=I, _MaxY) -> I;
+turn_yregs({call_ext,_,_}=I, _MaxY) -> I;
+turn_yregs({jump,_}=I, _MaxY) -> I;
+turn_yregs({label,_}=I, _MaxY) -> I;
+turn_yregs({line,_}=I, _MaxY) -> I;
+turn_yregs({test_heap,_,_}=I, _MaxY) -> I;
+turn_yregs({bif,Op,F,A,B}, MaxY) ->
+ {bif,Op,F,turn_yreg(A, MaxY),turn_yreg(B, MaxY)};
+turn_yregs({gc_bif,Op,F,Live,A,B}, MaxY) when is_integer(Live) ->
+ {gc_bif,Op,F,Live,turn_yreg(A, MaxY),turn_yreg(B, MaxY)};
+turn_yregs({get_tuple_element,S,N,D}, MaxY) ->
+ {get_tuple_element,turn_yreg(S, MaxY),N,turn_yreg(D, MaxY)};
+turn_yregs({put_tuple,Arity,D}, MaxY) ->
+ {put_tuple,Arity,turn_yreg(D, MaxY)};
+turn_yregs({select_val,R,F,L}, MaxY) ->
+ {select_val,turn_yreg(R, MaxY),F,L};
+turn_yregs({test,Op,F,L}, MaxY) ->
+ {test,Op,F,turn_yreg(L, MaxY)};
+turn_yregs({test,Op,F,Live,A,B}, MaxY) when is_integer(Live) ->
+ {test,Op,F,Live,turn_yreg(A, MaxY),turn_yreg(B, MaxY)};
+turn_yregs({Op,A}, MaxY) ->
+ {Op,turn_yreg(A, MaxY)};
+turn_yregs({Op,A,B}, MaxY) ->
+ {Op,turn_yreg(A, MaxY),turn_yreg(B, MaxY)};
+turn_yregs({Op,A,B,C}, MaxY) ->
+ {Op,turn_yreg(A, MaxY),turn_yreg(B, MaxY),turn_yreg(C, MaxY)};
+turn_yregs(Tuple, MaxY) ->
+ turn_yregs(tuple_size(Tuple), Tuple, MaxY).
+
+turn_yregs(1, Tp, _) ->
+ Tp;
+turn_yregs(N, Tp, MaxY) ->
+ E = turn_yreg(element(N, Tp), MaxY),
+ turn_yregs(N-1, setelement(N, Tp, E), MaxY).
+
+turn_yreg({yy,YY}, MaxY) ->
+ {y,MaxY-YY};
+turn_yreg({list,Ls},MaxY) ->
+ {list,turn_yreg(Ls, MaxY)};
+turn_yreg([_|_]=Ts, MaxY) ->
+ [turn_yreg(T, MaxY) || T <- Ts];
+turn_yreg(Other, _MaxY) ->
+ Other.
%% select_cg(Sclause, V, TypeFail, ValueFail, StackReg, State) ->
%% {Is,StackReg,State}.
@@ -623,6 +651,8 @@ select_cg(#l{ke={type_clause,bin_int,S}}, {var,V}, Tf, _Vf, Bef, St) ->
select_bin_segs(S, V, Tf, Bef, St);
select_cg(#l{ke={type_clause,bin_end,[S]}}, {var,V}, Tf, _Vf, Bef, St) ->
select_bin_end(S, V, Tf, Bef, St);
+select_cg(#l{ke={type_clause,map,S}}, {var,V}, Tf, Vf, Bef, St) ->
+ select_map(S, V, Tf, Vf, Bef, St);
select_cg(#l{ke={type_clause,Type,Scs}}, {var,V}, Tf, Vf, Bef, St0) ->
{Vis,{Aft,St1}} =
mapfoldl(fun (S, {Int,Sta}) ->
@@ -643,9 +673,7 @@ select_val_cg(Type, R, [Val, {f,Lbl}], Tf, Vf, [{label,Lbl}|Sis]) ->
[{test,select_type_test(Type),{f,Tf},[R]},
{test,is_eq_exact,{f,Vf},[R,{Type,Val}]}|Sis];
select_val_cg(Type, R, Vls0, Tf, Vf, Sis) ->
- Vls1 = map(fun ({f,_Lbl} = F) -> F;
- (Value) -> {Type,Value}
- end, Vls0),
+ Vls1 = [case Value of {f,_Lbl} -> Value; _ -> {Type,Value} end || Value <- Vls0],
[{test,select_type_test(Type),{f,Tf},[R]}, {select_val,R,{f,Vf},{list,Vls1}}|Sis].
select_type_test(integer) -> is_integer;
@@ -678,22 +706,37 @@ select_nil(#l{ke={val_clause,nil,B}}, V, Tf, Vf, Bef, St0) ->
select_binary(#l{ke={val_clause,{binary,{var,V}},B},i=I,vdb=Vdb},
V, Tf, Vf, Bef, St0) ->
Int0 = clear_dead(Bef#sr{reg=Bef#sr.reg}, I, Vdb),
- {Bis,Aft,St1} = match_cg(B, Vf, Int0, St0),
+ {Bis0,Aft,St1} = match_cg(B, Vf, Int0, St0),
CtxReg = fetch_var(V, Int0),
Live = max_reg(Bef#sr.reg),
- {[{test,bs_start_match2,{f,Tf},Live,[CtxReg,V],CtxReg},
- {bs_save2,CtxReg,{V,V}}|Bis],
- Aft,St1};
+ Bis1 = [{test,bs_start_match2,{f,Tf},Live,[CtxReg,V],CtxReg},
+ {bs_save2,CtxReg,{V,V}}|Bis0],
+ Bis = finish_select_binary(Bis1),
+ {Bis,Aft,St1};
select_binary(#l{ke={val_clause,{binary,{var,Ivar}},B},i=I,vdb=Vdb},
V, Tf, Vf, Bef, St0) ->
Regs = put_reg(Ivar, Bef#sr.reg),
Int0 = clear_dead(Bef#sr{reg=Regs}, I, Vdb),
- {Bis,Aft,St1} = match_cg(B, Vf, Int0, St0),
+ {Bis0,Aft,St1} = match_cg(B, Vf, Int0, St0),
CtxReg = fetch_var(Ivar, Int0),
Live = max_reg(Bef#sr.reg),
- {[{test,bs_start_match2,{f,Tf},Live,[fetch_var(V, Bef),Ivar],CtxReg},
- {bs_save2,CtxReg,{Ivar,Ivar}}|Bis],
- Aft,St1}.
+ Bis1 = [{test,bs_start_match2,{f,Tf},Live,[fetch_var(V, Bef),Ivar],CtxReg},
+ {bs_save2,CtxReg,{Ivar,Ivar}}|Bis0],
+ Bis = finish_select_binary(Bis1),
+ {Bis,Aft,St1}.
+
+finish_select_binary([{bs_save2,R,Point}=I,{bs_restore2,R,Point}|Is]) ->
+ [I|finish_select_binary(Is)];
+finish_select_binary([{bs_save2,R,Point}=I,{test,is_eq_exact,_,_}=Test,
+ {bs_restore2,R,Point}|Is]) ->
+ [I,Test|finish_select_binary(Is)];
+finish_select_binary([{test,bs_match_string,F,[Ctx,BinList]}|Is])
+ when is_list(BinList) ->
+ I = {test,bs_match_string,F,[Ctx,list_to_bitstring(BinList)]},
+ [I|finish_select_binary(Is)];
+finish_select_binary([I|Is]) ->
+ [I|finish_select_binary(Is)];
+finish_select_binary([]) -> [].
%% New instructions for selection of binary segments.
@@ -784,21 +827,24 @@ select_extract_bin([{var,Hd},{var,Tl}], Size0, Unit, Type, Flags, Vf,
{bs_save2,CtxReg,{Ctx,Tl}}],Int1}
end,
{Es,clear_dead(Aft, I, Vdb),St};
-select_extract_bin([{var,Hd}], Size0, Unit, binary, Flags, Vf,
+select_extract_bin([{var,Hd}], Size, Unit, binary, Flags, Vf,
I, Vdb, Bef, Ctx, Body, St) ->
- SizeReg = get_bin_size_reg(Size0, Bef),
+ %% Match the last segment of a binary. We KNOW that the size
+ %% must be 'all'.
+ Size = {atom,all}, %Assertion.
{Es,Aft} =
case vdb_find(Hd, Vdb) of
{_,_,Lhd} when Lhd =< I ->
+ %% The result will not be used. Furthermore, since we
+ %% we are at the end of the binary, the position will
+ %% not be used again; thus, it is safe to do a cheaper
+ %% test of the unit.
CtxReg = fetch_var(Ctx, Bef),
- {case SizeReg =:= {atom,all} andalso is_context_unused(Body) of
- true when Unit =:= 1 ->
+ {case Unit of
+ 1 ->
[];
- true ->
- [{test,bs_test_unit,{f,Vf},[CtxReg,Unit]}];
- false ->
- [{test,bs_skip_bits2,{f,Vf},
- [CtxReg,SizeReg,Unit,{field_flags,Flags}]}]
+ _ ->
+ [{test,bs_test_unit,{f,Vf},[CtxReg,Unit]}]
end,Bef};
{_,_,_} ->
case is_context_unused(Body) of
@@ -810,7 +856,7 @@ select_extract_bin([{var,Hd}], Size0, Unit, binary, Flags, Vf,
Name = bs_get_binary2,
Live = max_reg(Bef#sr.reg),
{[{test,Name,{f,Vf},Live,
- [CtxReg,SizeReg,Unit,{field_flags,Flags}],Rhd}],
+ [CtxReg,Size,Unit,{field_flags,Flags}],Rhd}],
Int1};
true ->
%% Since the matching context will not be used again,
@@ -825,7 +871,7 @@ select_extract_bin([{var,Hd}], Size0, Unit, binary, Flags, Vf,
Name = bs_get_binary2,
Live = max_reg(Int1#sr.reg),
{[{test,Name,{f,Vf},Live,
- [CtxReg,SizeReg,Unit,{field_flags,Flags}],CtxReg}],
+ [CtxReg,Size,Unit,{field_flags,Flags}],CtxReg}],
Int1}
end
end,
@@ -915,6 +961,59 @@ select_extract_tuple(Src, Vs, I, Vdb, Bef, St) ->
{Es,{Aft,_}} = flatmapfoldl(F, {Bef,0}, Vs),
{Es,Aft,St}.
+select_map(Scs, V, Tf, Vf, Bef, St0) ->
+ Reg = fetch_var(V, Bef),
+ {Is,Aft,St1} =
+ match_fmf(fun(#l{ke={val_clause,{map,exact,_,Es},B},i=I,vdb=Vdb}, Fail, St1) ->
+ select_map_val(V, Es, B, Fail, I, Vdb, Bef, St1)
+ end, Vf, St0, Scs),
+ {[{test,is_map,{f,Tf},[Reg]}|Is],Aft,St1}.
+
+select_map_val(V, Es, B, Fail, I, Vdb, Bef, St0) ->
+ {Eis,Int,St1} = select_extract_map(V, Es, Fail, I, Vdb, Bef, St0),
+ {Bis,Aft,St2} = match_cg(B, Fail, Int, St1),
+ {Eis++Bis,Aft,St2}.
+
+select_extract_map(_, [], _, _, _, Bef, St) -> {[],Bef,St};
+select_extract_map(Src, Vs, Fail, I, Vdb, Bef, St) ->
+ %% First split the instruction flow
+ %% We want one set of each
+ %% 1) has_map_fields (no target registers)
+ %% 2) get_map_elements (with target registers)
+ %% Assume keys are term-sorted
+ Rsrc = fetch_var(Src, Bef),
+
+ {{HasKs,GetVs,HasVarKs,GetVarVs},Aft} = lists:foldr(fun
+ ({map_pair,{var,K},{var,V}},{{HasKsi,GetVsi,HasVarVsi,GetVarVsi},Int0}) ->
+ case vdb_find(V, Vdb) of
+ {V,_,L} when L =< I ->
+ RK = fetch_var(K,Int0),
+ {{HasKsi,GetVsi,[RK|HasVarVsi],GetVarVsi},Int0};
+ _Other ->
+ Reg1 = put_reg(V, Int0#sr.reg),
+ Int1 = Int0#sr{reg=Reg1},
+ RK = fetch_var(K,Int0),
+ RV = fetch_reg(V,Reg1),
+ {{HasKsi,GetVsi,HasVarVsi,[[RK,RV]|GetVarVsi]},Int1}
+ end;
+ ({map_pair,Key,{var,V}},{{HasKsi,GetVsi,HasVarVsi,GetVarVsi},Int0}) ->
+ case vdb_find(V, Vdb) of
+ {V,_,L} when L =< I ->
+ {{[Key|HasKsi],GetVsi,HasVarVsi,GetVarVsi},Int0};
+ _Other ->
+ Reg1 = put_reg(V, Int0#sr.reg),
+ Int1 = Int0#sr{reg=Reg1},
+ {{HasKsi,[Key,fetch_reg(V, Reg1)|GetVsi],HasVarVsi,GetVarVsi},Int1}
+ end
+ end, {{[],[],[],[]},Bef}, Vs),
+
+ Code = [{test,has_map_fields,{f,Fail},Rsrc,{list,HasKs}} || HasKs =/= []] ++
+ [{test,has_map_fields,{f,Fail},Rsrc,{list,[K]}} || K <- HasVarKs] ++
+ [{get_map_elements, {f,Fail},Rsrc,{list,GetVs}} || GetVs =/= []] ++
+ [{get_map_elements, {f,Fail},Rsrc,{list,[K,V]}} || [K,V] <- GetVarVs],
+ {Code, Aft, St}.
+
+
select_extract_cons(Src, [{var,Hd}, {var,Tl}], I, Vdb, Bef, St) ->
{Es,Aft} = case {vdb_find(Hd, Vdb), vdb_find(Tl, Vdb)} of
{{_,_,Lhd}, {_,_,Ltl}} when Lhd =< I, Ltl =< I ->
@@ -982,7 +1081,7 @@ protected_cg(Ts, Rs, _Fail, I, Vdb, Bef, St0) ->
St2#cg{bfail=Pfail}),
%%ok = io:fwrite("cg ~w: ~p~n", [?LINE,{Rs,I,Vdb,Aft}]),
%% Set return values to false.
- Mis = map(fun ({var,V}) -> {move,{atom,false},fetch_var(V, Aft)} end, Rs),
+ Mis = [{move,{atom,false},fetch_var(V,Aft)}||{var,V} <- Rs],
{Tis ++ [{jump,{f,Psucc}},
{label,Pfail}] ++ Mis ++ [{label,Psucc}],
Aft,St3#cg{bfail=St0#cg.bfail}}.
@@ -990,6 +1089,23 @@ protected_cg(Ts, Rs, _Fail, I, Vdb, Bef, St0) ->
%% test_cg(TestName, Args, Fail, I, Vdb, Bef, St) -> {[Ainstr],Aft,St}.
%% Generate test instruction. Use explicit fail label here.
+test_cg(is_map, [A], Fail, I, Vdb, Bef, St) ->
+ %% We must avoid creating code like this:
+ %%
+ %% move x(0) y(0)
+ %% is_map Fail [x(0)]
+ %% make_fun => x(0) %% Overwrite x(0)
+ %% put_map_assoc y(0) ...
+ %%
+ %% The code is safe, but beam_validator does not understand that.
+ %% Extending beam_validator to handle such (rare) code as the
+ %% above would make it slower for all programs. Instead, change
+ %% the code generator to always prefer the Y register for is_map()
+ %% and put_map_assoc() instructions, ensuring that they use the
+ %% same register.
+ Arg = cg_reg_arg_prefer_y(A, Bef),
+ Aft = clear_dead(Bef, I, Vdb),
+ {[{test,is_map,{f,Fail},[Arg]}],Aft,St};
test_cg(Test, As, Fail, I, Vdb, Bef, St) ->
Args = cg_reg_args(As, Bef),
Aft = clear_dead(Bef, I, Vdb),
@@ -1056,19 +1172,15 @@ call_cg(Func, As, Rs, Le, Vdb, Bef, St0) ->
%% Inside a guard. The only allowed function call is to
%% erlang:error/1,2. We will generate the following code:
%%
- %% jump FailureLabel
%% move {atom,ok} DestReg
- %%
- %% The 'move' instruction will never be executed, but we
- %% generate it anyway in case the beam_validator is run
- %% on unoptimized code.
+ %% jump FailureLabel
{remote,{atom,erlang},{atom,error}} = Func, %Assertion.
[{var,DestVar}] = Rs,
Int0 = clear_dead(Bef, Le#l.i, Vdb),
Reg = put_reg(DestVar, Int0#sr.reg),
Int = Int0#sr{reg=Reg},
Dst = fetch_reg(DestVar, Reg),
- {[{jump,{f,Fail}},{move,{atom,ok},Dst}],
+ {[{move,{atom,ok},Dst},{jump,{f,Fail}}],
clear_dead(Int, Le#l.i, Vdb),St0};
#cg{} ->
%% Ordinary function call in a function body.
@@ -1165,13 +1277,12 @@ enter_line(_, _, _) ->
local_func_label(Name, Arity, St) ->
local_func_label({Name,Arity}, St).
-local_func_label(Key, #cg{functable=Tab}=St0) ->
- case gb_trees:lookup(Key, Tab) of
- {value,Label} ->
- {Label,St0};
- none ->
+local_func_label(Key, #cg{functable=Map}=St0) ->
+ case Map of
+ #{Key := Label} -> {Label,St0};
+ _ ->
{Label,St} = new_label(St0),
- {Label,St#cg{functable=gb_trees:insert(Key, Label, Tab)}}
+ {Label,St#cg{functable=Map#{Key => Label}}}
end.
%% need_stack_frame(State) -> State'
@@ -1232,12 +1343,13 @@ bif_cg(Bif, As, [{var,V}], Le, Vdb, Bef, St0) ->
%% that we save any variable that will be live after this BIF call.
MayFail = not erl_bifs:is_safe(erlang, Bif, length(As)),
- {Sis,Int0} = case St0#cg.in_catch andalso
- St0#cg.bfail =:= 0 andalso
- MayFail of
- true -> adjust_stack(Bef, Le#l.i, Le#l.i+1, Vdb);
- false -> {[],Bef}
- end,
+ {Sis,Int0} =
+ case MayFail of
+ true ->
+ maybe_adjust_stack(Bef, Le#l.i, Le#l.i+1, Vdb, St0);
+ false ->
+ {[],Bef}
+ end,
Int1 = clear_dead(Int0, Le#l.i, Vdb),
Reg = put_reg(V, Int1#sr.reg),
Int = Int1#sr{reg=Reg},
@@ -1268,11 +1380,7 @@ gc_bif_cg(Bif, As, [{var,V}], Le, Vdb, Bef, St0) ->
%% Currently, we are somewhat pessimistic in
%% that we save any variable that will be live after this BIF call.
- {Sis,Int0} =
- case St0#cg.in_catch andalso St0#cg.bfail =:= 0 of
- true -> adjust_stack(Bef, Le#l.i, Le#l.i+1, Vdb);
- false -> {[],Bef}
- end,
+ {Sis,Int0} = maybe_adjust_stack(Bef, Le#l.i, Le#l.i+1, Vdb, St0),
Int1 = clear_dead(Int0, Le#l.i, Vdb),
Reg = put_reg(V, Int1#sr.reg),
@@ -1408,7 +1516,7 @@ catch_cg(C, {var,R}, Le, Vdb, Bef, St0) ->
%% annotation must reflect this and make sure that the return
%% variable is allocated first.
%%
-%% put_list for constructing a cons is an atomic instruction
+%% put_list and put_map are atomic instructions, both of
%% which can safely resuse one of the source registers as target.
set_cg([{var,R}], {cons,Es}, Le, Vdb, Bef, St) ->
@@ -1417,8 +1525,7 @@ set_cg([{var,R}], {cons,Es}, Le, Vdb, Bef, St) ->
Int1 = Int0#sr{reg=put_reg(R, Int0#sr.reg)},
Ret = fetch_reg(R, Int1#sr.reg),
{[{put_list,S1,S2,Ret}], Int1, St};
-set_cg([{var,R}], {binary,Segs}, Le, Vdb, Bef,
- #cg{in_catch=InCatch, bfail=Bfail}=St) ->
+set_cg([{var,R}], {binary,Segs}, Le, Vdb, Bef, #cg{bfail=Bfail}=St) ->
%% At run-time, binaries are constructed in three stages:
%% 1) First the size of the binary is calculated.
%% 2) Then the binary is allocated.
@@ -1437,17 +1544,58 @@ set_cg([{var,R}], {binary,Segs}, Le, Vdb, Bef,
%% First generate the code that constructs each field.
Fail = {f,Bfail},
PutCode = cg_bin_put(Segs, Fail, Bef),
- {Sis,Int1} =
- case InCatch of
- true -> adjust_stack(Int0, Le#l.i, Le#l.i+1, Vdb);
- false -> {[],Int0}
- end,
+ {Sis,Int1} = maybe_adjust_stack(Int0, Le#l.i, Le#l.i+1, Vdb, St),
MaxRegs = max_reg(Bef#sr.reg),
Aft = clear_dead(Int1, Le#l.i, Vdb),
%% Now generate the complete code for constructing the binary.
Code = cg_binary(PutCode, Target, Temp, Fail, MaxRegs, Le#l.a),
{Sis++Code,Aft,St};
+
+%% Map: single variable key.
+set_cg([{var,R}], {map,Op,Map,[{map_pair,{var,_}=K,V}]}, Le, Vdb, Bef, St0) ->
+ {Sis,Int0} = maybe_adjust_stack(Bef, Le#l.i, Le#l.i+1, Vdb, St0),
+
+ SrcReg = cg_reg_arg_prefer_y(Map, Int0),
+ Line = line(Le#l.a),
+
+ List = [cg_reg_arg(K,Int0),cg_reg_arg(V,Int0)],
+
+ Live = max_reg(Bef#sr.reg),
+
+ %% The target register can reuse one of the source registers.
+ Aft0 = clear_dead(Int0, Le#l.i, Vdb),
+ Aft = Aft0#sr{reg=put_reg(R, Aft0#sr.reg)},
+ Target = fetch_reg(R, Aft#sr.reg),
+
+ {Is,St1} = set_cg_map(Line, Op, SrcReg, Target, Live, List, St0),
+ {Sis++Is,Aft,St1};
+
+%% Map: (possibly) multiple literal keys.
+set_cg([{var,R}], {map,Op,Map,Es}, Le, Vdb, Bef, St0) ->
+
+ %% assert key literals
+ [] = [Var||{map_pair,{var,_}=Var,_} <- Es],
+
+ {Sis,Int0} = maybe_adjust_stack(Bef, Le#l.i, Le#l.i+1, Vdb, St0),
+ SrcReg = cg_reg_arg_prefer_y(Map, Int0),
+ Line = line(Le#l.a),
+
+ %% fetch registers for values to be put into the map
+ Pairs = [{K,V} || {_,K,V} <- Es],
+ List = flatmap(fun({K,V}) -> [K,cg_reg_arg(V,Int0)] end, Pairs),
+
+ Live = max_reg(Bef#sr.reg),
+
+ %% The target register can reuse one of the source registers.
+ Aft0 = clear_dead(Int0, Le#l.i, Vdb),
+ Aft = Aft0#sr{reg=put_reg(R, Aft0#sr.reg)},
+ Target = fetch_reg(R, Aft#sr.reg),
+
+ {Is,St1} = set_cg_map(Line, Op, SrcReg, Target, Live, List, St0),
+ {Sis++Is,Aft,St1};
+
+%% Everything else.
set_cg([{var,R}], Con, Le, Vdb, Bef, St) ->
%% Find a place for the return register first.
Int = Bef#sr{reg=put_reg(R, Bef#sr.reg)},
@@ -1460,16 +1608,45 @@ set_cg([{var,R}], Con, Le, Vdb, Bef, St) ->
end,
{Ais,clear_dead(Int, Le#l.i, Vdb),St}.
+
+set_cg_map(Line, Op0, SrcReg, Target, Live, List, St0) ->
+ Bfail = St0#cg.bfail,
+ Fail = {f,St0#cg.bfail},
+ Op = case Op0 of
+ assoc -> put_map_assoc;
+ exact -> put_map_exact
+ end,
+ {OkLbl,St1} = new_label(St0),
+ {BadLbl,St2} = new_label(St1),
+ Is = if
+ Bfail =:= 0 orelse Op =:= put_map_assoc ->
+ [Line,{Op,{f,0},SrcReg,Target,Live,{list,List}}];
+ true ->
+ %% Ensure that Target is always set, even if
+ %% the map update operation fails. That is necessary
+ %% because Target may be included in a test_heap
+ %% instruction.
+ [Line,
+ {Op,{f,BadLbl},SrcReg,Target,Live,{list,List}},
+ {jump,{f,OkLbl}},
+ {label,BadLbl},
+ {move,{atom,ok},Target},
+ {jump,Fail},
+ {label,OkLbl}]
+ end,
+ {Is,St2}.
+
%%%
%%% Code generation for constructing binaries.
%%%
cg_binary([{bs_put_binary,Fail,{atom,all},U,_Flags,Src}|PutCode],
Target, Temp, Fail, MaxRegs, Anno) ->
+ Line = line(Anno),
Live = cg_live(Target, MaxRegs),
SzCode = cg_bitstr_size(PutCode, Target, Temp, Fail, Live),
BinFlags = {field_flags,[]},
- Code = SzCode ++
+ Code = [Line|SzCode] ++
[case member(single_use, Anno) of
true ->
{bs_private_append,Fail,Target,U,Src,BinFlags,Target};
@@ -1701,6 +1878,9 @@ cg_reg_args(As, Bef) -> [cg_reg_arg(A, Bef) || A <- As].
cg_reg_arg({var,V}, Bef) -> fetch_var(V, Bef);
cg_reg_arg(Literal, _) -> Literal.
+cg_reg_arg_prefer_y({var,V}, Bef) -> fetch_var_prefer_y(V, Bef);
+cg_reg_arg_prefer_y(Literal, _) -> Literal.
+
%% cg_setup_call([Arg], Bef, Cur, Vdb) -> {[Instr],Aft}.
%% Do the complete setup for a call/enter.
@@ -1833,25 +2013,28 @@ clear_dead(Sr, Until, Vdb) ->
stk=clear_dead_stk(Sr#sr.stk, Until, Vdb)}.
clear_dead_reg(Sr, Until, Vdb) ->
- Reg = map(fun ({_I,V} = IV) ->
- case vdb_find(V, Vdb) of
- {V,_,L} when L > Until -> IV;
- _ -> free %Remove anything else
- end;
- ({reserved,_I,_V} = Reserved) -> Reserved;
- (free) -> free
- end, Sr#sr.reg),
+ Reg = [case R of
+ {_I,V} = IV ->
+ case vdb_find(V, Vdb) of
+ {V,_,L} when L > Until -> IV;
+ _ -> free %Remove anything else
+ end;
+ {reserved,_I,_V} = Reserved -> Reserved;
+ free -> free
+ end || R <- Sr#sr.reg],
reserve(Sr#sr.res, Reg, Sr#sr.stk).
clear_dead_stk(Stk, Until, Vdb) ->
- map(fun ({V} = T) ->
- case vdb_find(V, Vdb) of
- {V,_,L} when L > Until -> T;
- _ -> dead %Remove anything else
- end;
- (free) -> free;
- (dead) -> dead
- end, Stk).
+ [case S of
+ {V} = T ->
+ case vdb_find(V, Vdb) of
+ {V,_,L} when L > Until -> T;
+ _ -> dead %Remove anything else
+ end;
+ free -> free;
+ dead -> dead
+ end || S <- Stk].
+
%% sr_merge(Sr1, Sr2) -> Sr.
%% Merge two stack/register states keeping the longest of both stack
@@ -1879,6 +2062,19 @@ trim_free([R|Rs0]) ->
end;
trim_free([]) -> [].
+%% maybe_adjust_stack(Bef, FirstBefore, LastFrom, Vdb, St) -> {[Ainstr],Aft}.
+%% Adjust the stack, but only if the code is inside a catch and not
+%% inside a guard. Use this funtion before instructions that may
+%% cause an exception.
+
+maybe_adjust_stack(Bef, Fb, Lf, Vdb, St) ->
+ case St of
+ #cg{in_catch=true,bfail=0} ->
+ adjust_stack(Bef, Fb, Lf, Vdb);
+ #cg{} ->
+ {[],Bef}
+ end.
+
%% adjust_stack(Bef, FirstBefore, LastFrom, Vdb) -> {[Ainstr],Aft}.
%% Do complete stack adjustment by compressing stack and adding
%% variables to be saved. Try to optimise ordering on stack by
@@ -1926,11 +2122,17 @@ fetch_var(V, Sr) ->
error -> fetch_stack(V, Sr#sr.stk)
end.
+fetch_var_prefer_y(V, #sr{reg=Reg,stk=Stk}) ->
+ case find_stack(V, Stk) of
+ {ok,R} -> R;
+ error -> fetch_reg(V, Reg)
+ end.
+
load_vars(Vs, Regs) ->
foldl(fun ({var,V}, Rs) -> put_reg(V, Rs) end, Regs, Vs).
%% put_reg(Val, Regs) -> Regs.
-%% find_reg(Val, Regs) -> ok{r{R}} | error.
+%% find_reg(Val, Regs) -> {ok,r{R}} | error.
%% fetch_reg(Val, Regs) -> r{R}.
%% Functions to interface the registers.
@@ -1981,9 +2183,11 @@ put_stack(Val, [free|Stk]) -> [{Val}|Stk];
put_stack(Val, [NotFree|Stk]) -> [NotFree|put_stack(Val, Stk)].
put_stack_carefully(Val, Stk0) ->
- case catch put_stack_carefully1(Val, Stk0) of
- error -> error;
- Stk1 when is_list(Stk1) -> Stk1
+ try
+ put_stack_carefully1(Val, Stk0)
+ catch
+ throw:error ->
+ error
end.
put_stack_carefully1(_, []) -> throw(error);
@@ -1997,11 +2201,11 @@ fetch_stack(Var, Stk) -> fetch_stack(Var, Stk, 0).
fetch_stack(V, [{V}|_], I) -> {yy,I};
fetch_stack(V, [_|Stk], I) -> fetch_stack(V, Stk, I+1).
-% find_stack(Var, Stk) -> find_stack(Var, Stk, 0).
+find_stack(Var, Stk) -> find_stack(Var, Stk, 0).
-% find_stack(V, [{V}|Stk], I) -> {ok,{yy,I}};
-% find_stack(V, [O|Stk], I) -> find_stack(V, Stk, I+1);
-% find_stack(V, [], I) -> error.
+find_stack(V, [{V}|_], I) -> {ok,{yy,I}};
+find_stack(V, [_|Stk], I) -> find_stack(V, Stk, I+1);
+find_stack(_, [], _) -> error.
on_stack(V, Stk) -> keymember(V, 1, Stk).
diff --git a/lib/compiler/src/v3_core.erl b/lib/compiler/src/v3_core.erl
index d6fdcb2b21..d71411de80 100644
--- a/lib/compiler/src/v3_core.erl
+++ b/lib/compiler/src/v3_core.erl
@@ -1,18 +1,19 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1999-2013. All Rights Reserved.
+%% Copyright Ericsson AB 1999-2016. All Rights Reserved.
%%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
%%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
%%
%% %CopyrightEnd%
%%
@@ -66,6 +67,7 @@
%% match arguments are novars
%% case arguments are novars
%% receive timeouts are novars
+%% binaries and maps are novars
%% let/set arguments are expressions
%% fun is not a safe
@@ -74,10 +76,11 @@
-export([module/2,format_error/1]).
-import(lists, [reverse/1,reverse/2,map/2,member/2,foldl/3,foldr/3,mapfoldl/3,
- splitwith/2,keyfind/3,sort/1,foreach/2]).
+ splitwith/2,keyfind/3,sort/1,foreach/2,droplast/1,last/1]).
-import(ordsets, [add_element/2,del_element/2,is_element/2,
union/1,union/2,intersection/2,subtract/2]).
--import(cerl, [ann_c_cons/3,ann_c_cons_skel/3,ann_c_tuple/2,c_tuple/1]).
+-import(cerl, [ann_c_cons/3,ann_c_tuple/2,c_tuple/1,
+ ann_c_map/3]).
-include("core_parse.hrl").
@@ -92,7 +95,7 @@
-record(icase, {anno=#a{},args,clauses,fc}).
-record(icatch, {anno=#a{},body}).
-record(iclause, {anno=#a{},pats,pguard=[],guard,body}).
--record(ifun, {anno=#a{},id,vars,clauses,fc}).
+-record(ifun, {anno=#a{},id,vars,clauses,fc,name=unnamed}).
-record(iletrec, {anno=#a{},defs,body}).
-record(imatch, {anno=#a{},pat,guard=[],arg,fc}).
-record(iprimop, {anno=#a{},name,args}).
@@ -101,6 +104,10 @@
-record(ireceive2, {anno=#a{},clauses,timeout,action}).
-record(iset, {anno=#a{},var,arg}).
-record(itry, {anno=#a{},args,vars,body,evars,handler}).
+-record(ifilter, {anno=#a{},arg}).
+-record(igen, {anno=#a{},ceps=[],acc_pat,acc_guard,
+ skip_pat,tail,tail_pat,arg}).
+-record(isimple, {anno=#a{},term :: cerl:cerl()}).
-type iapply() :: #iapply{}.
-type ibinary() :: #ibinary{}.
@@ -117,10 +124,14 @@
-type ireceive2() :: #ireceive2{}.
-type iset() :: #iset{}.
-type itry() :: #itry{}.
+-type ifilter() :: #ifilter{}.
+-type igen() :: #igen{}.
+-type isimple() :: #isimple{}.
-type i() :: iapply() | ibinary() | icall() | icase() | icatch()
| iclause() | ifun() | iletrec() | imatch() | iprimop()
- | iprotect() | ireceive1() | ireceive2() | iset() | itry().
+ | iprotect() | ireceive1() | ireceive2() | iset() | itry()
+ | ifilter() | igen() | isimple().
-type warning() :: {file:filename(), [{integer(), module(), term()}]}.
@@ -158,63 +169,86 @@ form({attribute,_,file,{File,_Line}}, {Fs,As,Ws,_}, _Opts) ->
form({attribute,_,_,_}=F, {Fs,As,Ws,File}, _Opts) ->
{Fs,[attribute(F)|As],Ws,File}.
-attribute({attribute,Line,Name,Val}) ->
- {#c_literal{val=Name, anno=[Line]}, #c_literal{val=Val, anno=[Line]}}.
+attribute(Attribute) ->
+ Fun = fun(A) -> [erl_anno:location(A)] end,
+ {attribute,Line,Name,Val} = erl_parse:map_anno(Fun, Attribute),
+ {#c_literal{val=Name, anno=Line}, #c_literal{val=Val, anno=Line}}.
+
+%% function_dump(module_info,_,_,_) -> ok;
+%% function_dump(Name,Arity,Format,Terms) ->
+%% io:format("~w/~w " ++ Format,[Name,Arity]++Terms),
+%% ok.
function({function,_,Name,Arity,Cs0}, Ws0, File, Opts) ->
- %%ok = io:fwrite("~p - ", [{Name,Arity}]),
St0 = #core{vcount=0,opts=Opts,ws=Ws0,file=[{file,File}]},
{B0,St1} = body(Cs0, Name, Arity, St0),
- %%ok = io:fwrite("1", []),
- %%ok = io:fwrite("~w:~p~n", [?LINE,B0]),
+ %% ok = function_dump(Name,Arity,"body:~n~p~n",[B0]),
{B1,St2} = ubody(B0, St1),
- %%ok = io:fwrite("2", []),
- %%ok = io:fwrite("~w:~p~n", [?LINE,B1]),
+ %% ok = function_dump(Name,Arity,"ubody:~n~p~n",[B1]),
{B2,#core{ws=Ws}} = cbody(B1, St2),
- %%ok = io:fwrite("3~n", []),
- %%ok = io:fwrite("~w:~p~n", [?LINE,B2]),
+ %% ok = function_dump(Name,Arity,"cbody:~n~p~n",[B2]),
{{#c_var{name={Name,Arity}},B2},Ws}.
body(Cs0, Name, Arity, St0) ->
Anno = lineno_anno(element(2, hd(Cs0)), St0),
{Args,St1} = new_vars(Anno, Arity, St0),
- {Cs1,St2} = clauses(Cs0, St1),
- {Ps,St3} = new_vars(Arity, St2), %Need new variables here
- Fc = function_clause(Ps, Anno, {Name,Arity}),
- {#ifun{anno=#a{anno=Anno},id=[],vars=Args,clauses=Cs1,fc=Fc},St3}.
+ case clauses(Cs0, St1) of
+ {Cs1,[],St2} ->
+ {Ps,St3} = new_vars(Arity, St2), %Need new variables here
+ Fc = function_clause(Ps, Anno, {Name,Arity}),
+ {#ifun{anno=#a{anno=Anno},id=[],vars=Args,clauses=Cs1,fc=Fc},St3};
+ {Cs1,Eps,St2} ->
+ %% We have pre-expressions from patterns and
+ %% these needs to be letified before matching
+ %% since only bound variables are allowed
+ AnnoGen = #a{anno=[compiler_generated]},
+ {Ps1,St3} = new_vars(Arity, St2), %Need new variables here
+ Fc1 = function_clause(Ps1, Anno, {Name,Arity}),
+ {Ps2,St4} = new_vars(Arity, St3), %Need new variables here
+ Fc2 = function_clause(Ps2, Anno, {Name,Arity}),
+ Case = #icase{anno=AnnoGen,args=Args,
+ clauses=Cs1,
+ fc=Fc2},
+ {#ifun{anno=#a{anno=Anno},id=[],vars=Args,
+ clauses=[#iclause{anno=AnnoGen,pats=Ps1,
+ guard=[#c_literal{val=true}],
+ body=Eps ++ [Case]}],
+ fc=Fc1},St4}
+ end.
%% clause(Clause, State) -> {Cclause,State} | noclause.
%% clauses([Clause], State) -> {[Cclause],State}.
%% Convert clauses. Trap bad pattern aliases and remove clause from
%% clause list.
-clauses([C0|Cs0], St0) ->
+clauses([C0|Cs0],St0) ->
case clause(C0, St0) of
- {noclause,St} -> clauses(Cs0, St);
- {C,St1} ->
- {Cs,St2} = clauses(Cs0, St1),
- {[C|Cs],St2}
+ {noclause,_,St} -> clauses(Cs0,St);
+ {C,Eps1,St1} ->
+ {Cs,Eps2,St2} = clauses(Cs0, St1),
+ {[C|Cs],Eps1++Eps2,St2}
end;
-clauses([], St) -> {[],St}.
+clauses([],St) -> {[],[],St}.
clause({clause,Lc,H0,G0,B0}, St0) ->
try head(H0, St0) of
- H1 ->
- {G1,St1} = guard(G0, St0),
- {B1,St2} = exprs(B0, St1),
- Anno = lineno_anno(Lc, St2),
- {#iclause{anno=#a{anno=Anno},pats=H1,guard=G1,body=B1},St2}
+ {H1,Eps,St1} ->
+ {G1,St2} = guard(G0, St1),
+ {B1,St3} = exprs(B0, St2),
+ Anno = lineno_anno(Lc, St3),
+ {#iclause{anno=#a{anno=Anno},pats=H1,guard=G1,body=B1},Eps,St3}
catch
throw:nomatch ->
St = add_warning(Lc, nomatch, St0),
- {noclause,St} %Bad pattern
+ {noclause,[],St} %Bad pattern
end.
clause_arity({clause,_,H0,_,_}) -> length(H0).
-%% head([P], State) -> [P].
+%% head([P], State) -> {[P],[Cexpr],State}.
-head(Ps, St) -> pattern_list(Ps, St).
+head(Ps, St) ->
+ pattern_list(Ps, St).
%% guard([Expr], State) -> {[Cexpr],State}.
%% Build an explict and/or tree of guard alternatives, then traverse
@@ -226,13 +260,13 @@ guard(Gs0, St0) ->
Gt1 = guard_tests(Gt0),
L = element(2, Gt1),
{op,L,'or',Gt1,Rhs}
- end, guard_tests(last(Gs0)), first(Gs0)),
+ end, guard_tests(last(Gs0)), droplast(Gs0)),
{Gs,St} = gexpr_top(Gs1, St0#core{in_guard=true}),
{Gs,St#core{in_guard=false}}.
guard_tests(Gs) ->
L = element(2, hd(Gs)),
- {protect,L,foldr(fun (G, Rhs) -> {op,L,'and',G,Rhs} end, last(Gs), first(Gs))}.
+ {protect,L,foldr(fun (G, Rhs) -> {op,L,'and',G,Rhs} end, last(Gs), droplast(Gs))}.
%% gexpr_top(Expr, State) -> {Cexpr,State}.
%% Generate an internal core expression of a guard test. Explicitly
@@ -258,62 +292,80 @@ gexpr({protect,Line,Arg}, Bools0, St0) ->
{#iprotect{anno=#a{anno=Anno},body=Eps++[E]},[],Bools0,St}
end;
gexpr({op,L,'andalso',E1,E2}, Bools, St0) ->
- {#c_var{name=V0},St} = new_var(L, St0),
+ Anno = lineno_anno(L, St0),
+ {#c_var{name=V0},St} = new_var(Anno, St0),
V = {var,L,V0},
False = {atom,L,false},
E = make_bool_switch_guard(L, E1, V, E2, False),
gexpr(E, Bools, St);
gexpr({op,L,'orelse',E1,E2}, Bools, St0) ->
- {#c_var{name=V0},St} = new_var(L, St0),
+ Anno = lineno_anno(L, St0),
+ {#c_var{name=V0},St} = new_var(Anno, St0),
V = {var,L,V0},
True = {atom,L,true},
E = make_bool_switch_guard(L, E1, V, True, E2),
gexpr(E, Bools, St);
-gexpr({op,Line,Op,L,R}=Call, Bools0, St0) ->
+gexpr({op,Line,Op,L,R}=E, Bools, St) ->
case erl_internal:bool_op(Op, 2) of
- true ->
- {Le,Lps,Bools1,St1} = gexpr(L, Bools0, St0),
- {Ll,Llps,St2} = force_safe(Le, St1),
- {Re,Rps,Bools,St3} = gexpr(R, Bools1, St2),
- {Rl,Rlps,St4} = force_safe(Re, St3),
- Anno = lineno_anno(Line, St4),
- {#icall{anno=#a{anno=Anno}, %Must have an #a{}
- module=#c_literal{anno=Anno,val=erlang},
- name=#c_literal{anno=Anno,val=Op},
- args=[Ll,Rl]},Lps ++ Llps ++ Rps ++ Rlps,Bools,St4};
- false ->
- gexpr_test(Call, Bools0, St0)
+ true ->
+ gexpr_bool(Op, L, R, Bools, St, Line);
+ false ->
+ gexpr_test(E, Bools, St)
end;
-gexpr({op,Line,Op,A}=Call, Bools0, St0) ->
- case Op of
- 'not' ->
- {Ae0,Aps,Bools,St1} = gexpr(A, Bools0, St0),
- case Ae0 of
- #icall{module=#c_literal{val=erlang},
- name=#c_literal{val='=:='},
- args=[E,#c_literal{val=true}]}=EqCall ->
- %%
- %% Doing the following transformation
- %% not(Expr =:= true) ==> Expr =:= false
- %% will help eliminating redundant is_boolean/1 tests.
- %%
- Ae = EqCall#icall{args=[E,#c_literal{val=false}]},
- {Al,Alps,St2} = force_safe(Ae, St1),
- {Al,Aps ++ Alps,Bools,St2};
- Ae ->
- {Al,Alps,St2} = force_safe(Ae, St1),
- Anno = lineno_anno(Line, St2),
- {#icall{anno=#a{anno=Anno}, %Must have an #a{}
- module=#c_literal{anno=Anno,val=erlang},
- name=#c_literal{anno=Anno,val=Op},
- args=[Al]},Aps ++ Alps,Bools,St2}
- end;
- _ ->
- gexpr_test(Call, Bools0, St0)
+gexpr({call,Line,{remote,_,{atom,_,erlang},{atom,_,Op}},[L,R]}=E, Bools, St) ->
+ case erl_internal:bool_op(Op, 2) of
+ true ->
+ gexpr_bool(Op, L, R, Bools, St, Line);
+ false ->
+ gexpr_test(E, Bools, St)
end;
+gexpr({op,Line,'not',A}, Bools, St) ->
+ gexpr_not(A, Bools, St, Line);
+gexpr({call,Line,{remote,_,{atom,_,erlang},{atom,_,'not'}},[A]}, Bools, St) ->
+ gexpr_not(A, Bools, St, Line);
gexpr(E0, Bools, St0) ->
gexpr_test(E0, Bools, St0).
+%% gexpr_not(L, R, Bools, State) -> {Cexpr,[PreExp],Bools,State}.
+%% Generate a guard for boolean operators
+
+gexpr_bool(Op, L, R, Bools0, St0, Line) ->
+ {Le,Lps,Bools1,St1} = gexpr(L, Bools0, St0),
+ {Ll,Llps,St2} = force_safe(Le, St1),
+ {Re,Rps,Bools,St3} = gexpr(R, Bools1, St2),
+ {Rl,Rlps,St4} = force_safe(Re, St3),
+ Anno = lineno_anno(Line, St4),
+ {#icall{anno=#a{anno=Anno}, %Must have an #a{}
+ module=#c_literal{anno=Anno,val=erlang},
+ name=#c_literal{anno=Anno,val=Op},
+ args=[Ll,Rl]},Lps ++ Llps ++ Rps ++ Rlps,Bools,St4}.
+
+%% gexpr_not(Expr, Bools, State) -> {Cexpr,[PreExp],Bools,State}.
+%% Generate an erlang:'not'/1 guard test.
+
+gexpr_not(A, Bools0, St0, Line) ->
+ {Ae0,Aps,Bools,St1} = gexpr(A, Bools0, St0),
+ case Ae0 of
+ #icall{module=#c_literal{val=erlang},
+ name=#c_literal{val='=:='},
+ args=[E,#c_literal{val=true}]}=EqCall ->
+ %%
+ %% Doing the following transformation
+ %% not(Expr =:= true) ==> Expr =:= false
+ %% will help eliminating redundant is_boolean/1 tests.
+ %%
+ Ae = EqCall#icall{args=[E,#c_literal{val=false}]},
+ {Al,Alps,St2} = force_safe(Ae, St1),
+ {Al,Aps ++ Alps,Bools,St2};
+ Ae ->
+ {Al,Alps,St2} = force_safe(Ae, St1),
+ Anno = lineno_anno(Line, St2),
+ {#icall{anno=#a{anno=Anno}, %Must have an #a{}
+ module=#c_literal{anno=Anno,val=erlang},
+ name=#c_literal{anno=Anno,val='not'},
+ args=[Al]},Aps ++ Alps,Bools,St2}
+ end.
+
%% gexpr_test(Expr, Bools, State) -> {Cexpr,[PreExp],Bools,State}.
%% Generate a guard test. At this stage we must be sure that we have
%% a proper boolean value here so wrap things with an true test if we
@@ -330,39 +382,37 @@ gexpr_test(E0, Bools0, St0) ->
#icall{anno=Anno,module=#c_literal{val=erlang},name=#c_literal{val=N},args=As} ->
Ar = length(As),
case erl_internal:type_test(N, Ar) orelse
- erl_internal:comp_op(N, Ar) of
+ erl_internal:comp_op(N, Ar) orelse
+ erl_internal:bool_op(N, Ar) of
true -> {E1,Eps0,Bools0,St1};
false ->
Lanno = Anno#a.anno,
{New,St2} = new_var(Lanno, St1),
Bools = [New|Bools0],
- {#icall{anno=Anno, %Must have an #a{}
- module=#c_literal{anno=Lanno,val=erlang},
- name=#c_literal{anno=Lanno,val='=:='},
- args=[New,#c_literal{anno=Lanno,val=true}]},
+ {icall_eq_true(New),
Eps0 ++ [#iset{anno=Anno,var=New,arg=E1}],Bools,St2}
end;
_ ->
- Anno = get_ianno(E1),
Lanno = get_lineno_anno(E1),
+ ACompGen = #a{anno=[compiler_generated]},
case is_simple(E1) of
true ->
Bools = [E1|Bools0],
- {#icall{anno=Anno, %Must have an #a{}
- module=#c_literal{anno=Lanno,val=erlang},
- name=#c_literal{anno=Lanno,val='=:='},
- args=[E1,#c_literal{anno=Lanno,val=true}]},Eps0,Bools,St1};
+ {icall_eq_true(E1),Eps0,Bools,St1};
false ->
{New,St2} = new_var(Lanno, St1),
Bools = [New|Bools0],
- {#icall{anno=Anno, %Must have an #a{}
- module=#c_literal{anno=Lanno,val=erlang},
- name=#c_literal{anno=Lanno,val='=:='},
- args=[New,#c_literal{anno=Lanno,val=true}]},
- Eps0 ++ [#iset{anno=Anno,var=New,arg=E1}],Bools,St2}
+ {icall_eq_true(New),
+ Eps0 ++ [#iset{anno=ACompGen,var=New,arg=E1}],Bools,St2}
end
end.
+icall_eq_true(Arg) ->
+ #icall{anno=#a{anno=[compiler_generated]},
+ module=#c_literal{val=erlang},
+ name=#c_literal{val='=:='},
+ args=[Arg,#c_literal{val=true}]}.
+
force_booleans(Vs0, E, Eps, St) ->
Vs1 = [set_anno(V, []) || V <- Vs0],
Vs = unforce(E, Eps, Vs1),
@@ -372,16 +422,15 @@ force_booleans_1([], E, Eps, St) ->
{E,Eps,St};
force_booleans_1([V|Vs], E0, Eps0, St0) ->
{E1,Eps1,St1} = force_safe(E0, St0),
- Lanno = element(2, V),
- Anno = #a{anno=Lanno},
- Call = #icall{anno=Anno,module=#c_literal{anno=Lanno,val=erlang},
- name=#c_literal{anno=Lanno,val=is_boolean},
+ ACompGen = #a{anno=[compiler_generated]},
+ Call = #icall{anno=ACompGen,module=#c_literal{val=erlang},
+ name=#c_literal{val=is_boolean},
args=[V]},
- {New,St} = new_var(Lanno, St1),
- Iset = #iset{anno=Anno,var=New,arg=Call},
+ {New,St} = new_var([], St1),
+ Iset = #iset{var=New,arg=Call},
Eps = Eps0 ++ Eps1 ++ [Iset],
- E = #icall{anno=Anno,
- module=#c_literal{anno=Lanno,val=erlang},name=#c_literal{anno=Lanno,val='and'},
+ E = #icall{anno=ACompGen,
+ module=#c_literal{val=erlang},name=#c_literal{val='and'},
args=[E1,New]},
force_booleans_1(Vs, E, Eps, St).
@@ -420,7 +469,8 @@ unforce_tree([#iset{var=#c_var{name=V},arg=Arg0}|Es], D0) ->
unforce_tree(Es, D);
unforce_tree([#icall{}=Call], D) ->
unforce_tree_subst(Call, D);
-unforce_tree([Top], _) -> Top.
+unforce_tree([#c_var{name=V}], D) ->
+ gb_trees:get(V, D).
unforce_tree_subst(#icall{module=#c_literal{val=erlang},
name=#c_literal{val='=:='},
@@ -468,27 +518,32 @@ exprs([], St) -> {[],St}.
%% Generate an internal core expression.
expr({var,L,V}, St) -> {#c_var{anno=lineno_anno(L, St),name=V},[],St};
-expr({char,L,C}, St) -> {#c_literal{anno=lineno_anno(L, St),val=C},[],St};
-expr({integer,L,I}, St) -> {#c_literal{anno=lineno_anno(L, St),val=I},[],St};
-expr({float,L,F}, St) -> {#c_literal{anno=lineno_anno(L, St),val=F},[],St};
-expr({atom,L,A}, St) -> {#c_literal{anno=lineno_anno(L, St),val=A},[],St};
-expr({nil,L}, St) -> {#c_literal{anno=lineno_anno(L, St),val=[]},[],St};
-expr({string,L,S}, St) -> {#c_literal{anno=lineno_anno(L, St),val=S},[],St};
+expr({char,L,C}, St) -> {#c_literal{anno=full_anno(L, St),val=C},[],St};
+expr({integer,L,I}, St) -> {#c_literal{anno=full_anno(L, St),val=I},[],St};
+expr({float,L,F}, St) -> {#c_literal{anno=full_anno(L, St),val=F},[],St};
+expr({atom,L,A}, St) -> {#c_literal{anno=full_anno(L, St),val=A},[],St};
+expr({nil,L}, St) -> {#c_literal{anno=full_anno(L, St),val=[]},[],St};
+expr({string,L,S}, St) -> {#c_literal{anno=full_anno(L, St),val=S},[],St};
expr({cons,L,H0,T0}, St0) ->
{H1,Hps,St1} = safe(H0, St0),
{T1,Tps,St2} = safe(T0, St1),
- A = lineno_anno(L, St2),
- {ann_c_cons(A, H1, T1),Hps ++ Tps,St2};
-expr({lc,L,E,Qs}, St) ->
- lc_tq(L, E, Qs, #c_literal{anno=lineno_anno(L, St),val=[]}, St);
+ A = full_anno(L, St2),
+ {annotate_cons(A, H1, T1, St2),Hps ++ Tps,St2};
+expr({lc,L,E,Qs0}, St0) ->
+ {Qs1,St1} = preprocess_quals(L, Qs0, St0),
+ lc_tq(L, E, Qs1, #c_literal{anno=lineno_anno(L, St1),val=[]}, St1);
expr({bc,L,E,Qs}, St) ->
- bc_tq(L, E, Qs, {nil,L}, St);
+ bc_tq(L, E, Qs, St);
expr({tuple,L,Es0}, St0) ->
{Es1,Eps,St1} = safe_list(Es0, St0),
- A = lineno_anno(L, St1),
- {ann_c_tuple(A, Es1),Eps,St1};
+ A = record_anno(L, St1),
+ {annotate_tuple(A, Es1, St1),Eps,St1};
+expr({map,L,Es0}, St0) ->
+ map_build_pairs(#c_literal{val=#{}}, Es0, full_anno(L, St0), St0);
+expr({map,L,M,Es}, St) ->
+ expr_map(M, Es, L, St);
expr({bin,L,Es0}, St0) ->
- try expr_bin(Es0, lineno_anno(L, St0), St0) of
+ try expr_bin(Es0, full_anno(L, St0), St0) of
{_,_,_}=Res -> Res
catch
throw:bad_binary ->
@@ -502,30 +557,30 @@ expr({bin,L,Es0}, St0) ->
end;
expr({block,_,Es0}, St0) ->
%% Inline the block directly.
- {Es1,St1} = exprs(first(Es0), St0),
+ {Es1,St1} = exprs(droplast(Es0), St0),
{E1,Eps,St2} = expr(last(Es0), St1),
{E1,Es1 ++ Eps,St2};
expr({'if',L,Cs0}, St0) ->
- {Cs1,St1} = clauses(Cs0, St0),
+ {Cs1,Ceps,St1} = clauses(Cs0, St0),
Lanno = lineno_anno(L, St1),
Fc = fail_clause([], Lanno, #c_literal{val=if_clause}),
- {#icase{anno=#a{anno=Lanno},args=[],clauses=Cs1,fc=Fc},[],St1};
+ {#icase{anno=#a{anno=Lanno},args=[],clauses=Cs1,fc=Fc},Ceps,St1};
expr({'case',L,E0,Cs0}, St0) ->
{E1,Eps,St1} = novars(E0, St0),
- {Cs1,St2} = clauses(Cs0, St1),
+ {Cs1,Ceps,St2} = clauses(Cs0, St1),
{Fpat,St3} = new_var(St2),
Lanno = lineno_anno(L, St2),
Fc = fail_clause([Fpat], Lanno, c_tuple([#c_literal{val=case_clause},Fpat])),
- {#icase{anno=#a{anno=Lanno},args=[E1],clauses=Cs1,fc=Fc},Eps,St3};
+ {#icase{anno=#a{anno=Lanno},args=[E1],clauses=Cs1,fc=Fc},Eps++Ceps,St3};
expr({'receive',L,Cs0}, St0) ->
- {Cs1,St1} = clauses(Cs0, St0),
- {#ireceive1{anno=#a{anno=lineno_anno(L, St1)},clauses=Cs1}, [], St1};
+ {Cs1,Ceps,St1} = clauses(Cs0, St0),
+ {#ireceive1{anno=#a{anno=lineno_anno(L, St1)},clauses=Cs1},Ceps, St1};
expr({'receive',L,Cs0,Te0,Tes0}, St0) ->
{Te1,Teps,St1} = novars(Te0, St0),
{Tes1,St2} = exprs(Tes0, St1),
- {Cs1,St3} = clauses(Cs0, St2),
+ {Cs1,Ceps,St3} = clauses(Cs0, St2),
{#ireceive2{anno=#a{anno=lineno_anno(L, St3)},
- clauses=Cs1,timeout=Te1,action=Tes1},Teps,St3};
+ clauses=Cs1,timeout=Te1,action=Tes1},Teps++Ceps,St3};
expr({'try',L,Es0,[],Ecs,[]}, St0) ->
%% 'try ... catch ... end'
{Es1,St1} = exprs(Es0, St0),
@@ -539,7 +594,7 @@ expr({'try',L,Es0,Cs0,Ecs,[]}, St0) ->
%% 'try ... of ... catch ... end'
{Es1,St1} = exprs(Es0, St0),
{V,St2} = new_var(St1), %This name should be arbitrary
- {Cs1,St3} = clauses(Cs0, St2),
+ {Cs1,Ceps,St3} = clauses(Cs0, St2),
{Fpat,St4} = new_var(St3),
Lanno = lineno_anno(L, St4),
Fc = fail_clause([Fpat], Lanno,
@@ -548,21 +603,28 @@ expr({'try',L,Es0,Cs0,Ecs,[]}, St0) ->
{#itry{anno=#a{anno=lineno_anno(L, St5)},args=Es1,
vars=[V],body=[#icase{anno=#a{anno=Lanno},args=[V],clauses=Cs1,fc=Fc}],
evars=Evs,handler=Hs},
- [],St5};
+ Ceps,St5};
expr({'try',L,Es0,[],[],As0}, St0) ->
%% 'try ... after ... end'
{Es1,St1} = exprs(Es0, St0),
{As1,St2} = exprs(As0, St1),
- {Evs,Hs0,St3} = try_after(As1, St2),
- %% We must kill the id for any funs in the duplicated after body,
- %% to avoid getting two local functions having the same name.
- Hs = kill_id_anns(Hs0),
+ {Name,St3} = new_fun_name("after", St2),
{V,St4} = new_var(St3), % (must not exist in As1)
- %% TODO: this duplicates the 'after'-code; should lift to function.
- Lanno = lineno_anno(L, St4),
- {#itry{anno=#a{anno=Lanno},args=Es1,vars=[V],body=As1++[V],
- evars=Evs,handler=Hs},
- [],St4};
+ LA = lineno_anno(L, St4),
+ Lanno = #a{anno=LA},
+ Fc = function_clause([], LA, {Name,0}),
+ Fun = #ifun{anno=Lanno,id=[],vars=[],
+ clauses=[#iclause{anno=Lanno,pats=[],
+ guard=[#c_literal{val=true}],
+ body=As1}],
+ fc=Fc},
+ App = #iapply{anno=#a{anno=[compiler_generated|LA]},
+ op=#c_var{anno=LA,name={Name,0}},args=[]},
+ {Evs,Hs,St5} = try_after([App], St4),
+ Try = #itry{anno=Lanno,args=Es1,vars=[V],body=[App,V],evars=Evs,handler=Hs},
+ Letrec = #iletrec{anno=Lanno,defs=[{{Name,0},Fun}],
+ body=[Try]},
+ {Letrec,[],St5};
expr({'try',L,Es,Cs,Ecs,As}, St0) ->
%% 'try ... [of ...] [catch ...] after ... end'
expr({'try',L,[{'try',L,Es,Cs,Ecs,[]}],[],[],As}, St0);
@@ -571,31 +633,31 @@ expr({'catch',L,E0}, St0) ->
Lanno = lineno_anno(L, St1),
{#icatch{anno=#a{anno=Lanno},body=Eps ++ [E1]},[],St1};
expr({'fun',L,{function,F,A},{_,_,_}=Id}, St) ->
- Lanno = lineno_anno(L, St),
+ Lanno = full_anno(L, St),
{#c_var{anno=Lanno++[{id,Id}],name={F,A}},[],St};
expr({'fun',L,{function,M,F,A}}, St0) ->
{As,Aps,St1} = safe_list([M,F,A], St0),
- Lanno = lineno_anno(L, St1),
+ Lanno = full_anno(L, St1),
{#icall{anno=#a{anno=Lanno},
module=#c_literal{val=erlang},
name=#c_literal{val=make_fun},
args=As},Aps,St1};
expr({'fun',L,{clauses,Cs},Id}, St) ->
- fun_tq(Id, Cs, L, St);
-expr({call,L,{remote,_,M,F},As0}, #core{wanted=Wanted}=St0) ->
+ fun_tq(Id, Cs, L, St, unnamed);
+expr({named_fun,L,'_',Cs,Id}, St) ->
+ fun_tq(Id, Cs, L, St, unnamed);
+expr({named_fun,L,Name,Cs,Id}, St) ->
+ fun_tq(Id, Cs, L, St, {named,Name});
+expr({call,L,{remote,_,M,F},As0}, St0) ->
{[M1,F1|As1],Aps,St1} = safe_list([M,F|As0], St0),
- Lanno = lineno_anno(L, St1),
- Anno = case Wanted of
- false -> [result_not_wanted|Lanno];
- true -> Lanno
- end,
+ Anno = full_anno(L, St1),
{#icall{anno=#a{anno=Anno},module=M1,name=F1,args=As1},Aps,St1};
expr({call,Lc,{atom,Lf,F},As0}, St0) ->
{As1,Aps,St1} = safe_list(As0, St0),
Op = #c_var{anno=lineno_anno(Lf, St1),name={F,length(As1)}},
{#iapply{anno=#a{anno=lineno_anno(Lc, St1)},op=Op,args=As1},Aps,St1};
expr({call,L,FunExp,As0}, St0) ->
- {Fun,Fps,St1} = safe(FunExp, St0),
+ {Fun,Fps,St1} = safe_fun(length(As0), FunExp, St0),
{As1,Aps,St2} = safe_list(As0, St1),
Lanno = lineno_anno(L, St2),
{#iapply{anno=#a{anno=Lanno},op=Fun,args=As1},Fps ++ Aps,St2};
@@ -606,26 +668,53 @@ expr({match,L,P0,E0}, St0) ->
{var,_,'_'} -> St0#core{wanted=false};
_ -> St0
end,
- {E2,Eps,St2} = novars(E1, St1),
+ {E2,Eps1,St2} = novars(E1, St1),
St3 = St2#core{wanted=St0#core.wanted},
- P2 = try
- pattern(P1, St3)
+ {P2,Eps2,St4} = try
+ pattern(P1, St3)
catch
throw:Thrown ->
- Thrown
+ {Thrown,[],St3}
end,
- {Fpat,St4} = new_var(St3),
- Lanno = lineno_anno(L, St4),
+ {Fpat,St5} = new_var(St4),
+ Lanno = lineno_anno(L, St5),
Fc = fail_clause([Fpat], Lanno, c_tuple([#c_literal{val=badmatch},Fpat])),
case P2 of
nomatch ->
- St = add_warning(L, nomatch, St4),
- {#icase{anno=#a{anno=Lanno},
- args=[E2],clauses=[],fc=Fc},Eps,St};
+ %% The pattern will not match. We must take care here to
+ %% bind all variables that the pattern would have bound
+ %% so that subsequent expressions do not refer to unbound
+ %% variables.
+ %%
+ %% As an example, this code:
+ %%
+ %% [X] = {Y} = E,
+ %% X + Y.
+ %%
+ %% will be rewritten to:
+ %%
+ %% error({badmatch,E}),
+ %% case E of
+ %% {[X],{Y}} ->
+ %% X + Y;
+ %% Other ->
+ %% error({badmatch,Other})
+ %% end.
+ %%
+ St6 = add_warning(L, nomatch, St5),
+ {Expr,Eps3,St7} = safe(E1, St6),
+ SanPat0 = sanitize(P1),
+ {SanPat,Eps4,St} = pattern(SanPat0, St7),
+ Badmatch = c_tuple([#c_literal{val=badmatch},Expr]),
+ Fail = #iprimop{anno=#a{anno=Lanno},
+ name=#c_literal{val=match_fail},
+ args=[Badmatch]},
+ Eps = Eps3 ++ Eps4 ++ [Fail],
+ {#imatch{anno=#a{anno=Lanno},pat=SanPat,arg=Expr,fc=Fc},Eps,St};
Other when not is_atom(Other) ->
- {#imatch{anno=#a{anno=Lanno},pat=P2,arg=E2,fc=Fc},Eps,St4}
+ {#imatch{anno=#a{anno=Lanno},pat=P2,arg=E2,fc=Fc},Eps1++Eps2,St5}
end;
-expr({op,_,'++',{lc,Llc,E,Qs},More}, St0) ->
+expr({op,_,'++',{lc,Llc,E,Qs0},More}, St0) ->
%% Optimise '++' here because of the list comprehension algorithm.
%%
%% To avoid achieving quadratic complexity if there is a chain of
@@ -633,40 +722,69 @@ expr({op,_,'++',{lc,Llc,E,Qs},More}, St0) ->
%% evaluation of More now. Evaluating More here could also reduce the
%% number variables in the environment for letrec.
{Mc,Mps,St1} = safe(More, St0),
- {Y,Yps,St} = lc_tq(Llc, E, Qs, Mc, St1),
+ {Qs,St2} = preprocess_quals(Llc, Qs0, St1),
+ {Y,Yps,St} = lc_tq(Llc, E, Qs, Mc, St2),
{Y,Mps++Yps,St};
expr({op,L,'andalso',E1,E2}, St0) ->
- {#c_var{name=V0},St} = new_var(L, St0),
+ Anno = lineno_anno(L, St0),
+ {#c_var{name=V0},St} = new_var(Anno, St0),
V = {var,L,V0},
False = {atom,L,false},
E = make_bool_switch(L, E1, V, E2, False, St0),
expr(E, St);
expr({op,L,'orelse',E1,E2}, St0) ->
- {#c_var{name=V0},St} = new_var(L, St0),
+ Anno = lineno_anno(L, St0),
+ {#c_var{name=V0},St} = new_var(Anno, St0),
V = {var,L,V0},
True = {atom,L,true},
E = make_bool_switch(L, E1, V, True, E2, St0),
expr(E, St);
expr({op,L,Op,A0}, St0) ->
{A1,Aps,St1} = safe(A0, St0),
- LineAnno = lineno_anno(L, St1),
+ LineAnno = full_anno(L, St1),
{#icall{anno=#a{anno=LineAnno}, %Must have an #a{}
module=#c_literal{anno=LineAnno,val=erlang},
name=#c_literal{anno=LineAnno,val=Op},args=[A1]},Aps,St1};
expr({op,L,Op,L0,R0}, St0) ->
{As,Aps,St1} = safe_list([L0,R0], St0),
- LineAnno = lineno_anno(L, St1),
+ LineAnno = full_anno(L, St1),
{#icall{anno=#a{anno=LineAnno}, %Must have an #a{}
module=#c_literal{anno=LineAnno,val=erlang},
name=#c_literal{anno=LineAnno,val=Op},args=As},Aps,St1}.
+
+%% sanitize(Pat) -> SanitizedPattern
+%% Rewrite Pat so that it will be accepted by pattern/2 and will
+%% bind the same variables as the original pattern.
+%%
+%% Here is an example of a pattern that would cause a pattern/2
+%% to generate a 'nomatch' exception:
+%%
+%% #{k:=X,k:=Y} = [Z]
+%%
+%% The sanitized pattern will look like:
+%%
+%% {{X,Y},[Z]}
+
+sanitize({match,L,P1,P2}) ->
+ {tuple,L,[sanitize(P1),sanitize(P2)]};
+sanitize({cons,L,H,T}) ->
+ {cons,L,sanitize(H),sanitize(T)};
+sanitize({tuple,L,Ps0}) ->
+ Ps = [sanitize(P) || P <- Ps0],
+ {tuple,L,Ps};
+sanitize({map,L,Ps0}) ->
+ Ps = [sanitize(V) || {map_field_exact,_,_,V} <- Ps0],
+ {tuple,L,Ps};
+sanitize(P) -> P.
+
make_bool_switch(L, E, V, T, F, #core{in_guard=true}) ->
make_bool_switch_guard(L, E, V, T, F);
make_bool_switch(L, E, V, T, F, #core{}) ->
make_bool_switch_body(L, E, V, T, F).
make_bool_switch_body(L, E, V, T, F) ->
- NegL = neg_line(abs_line(L)),
+ NegL = no_compiler_warning(L),
Error = {tuple,NegL,[{atom,NegL,badarg},V]},
{'case',NegL,E,
[{clause,NegL,[{atom,NegL,true}],[],[T]},
@@ -677,36 +795,98 @@ make_bool_switch_body(L, E, V, T, F) ->
make_bool_switch_guard(_, E, _, {atom,_,true}, {atom,_,false}) -> E;
make_bool_switch_guard(L, E, V, T, F) ->
- NegL = neg_line(abs_line(L)),
+ NegL = no_compiler_warning(L),
{'case',NegL,E,
[{clause,NegL,[{atom,NegL,true}],[],[T]},
{clause,NegL,[{atom,NegL,false}],[],[F]},
{clause,NegL,[V],[],[V]}
]}.
+expr_map(M0, Es0, L, St0) ->
+ {M1,Eps0,St1} = safe(M0, St0),
+ Badmap = badmap_term(M1, St1),
+ A = lineno_anno(L, St1),
+ Fc = fail_clause([], [{eval_failure,badmap}|A], Badmap),
+ case is_valid_map_src(M1) of
+ true ->
+ {M2,Eps1,St2} = map_build_pairs(M1, Es0, full_anno(L, St1), St1),
+ M3 = case Es0 of
+ [] -> M1;
+ [_|_] -> M2
+ end,
+ Cs = [#iclause{
+ anno=#a{anno=[compiler_generated|A]},
+ pats=[],
+ guard=[#icall{anno=#a{anno=A},
+ module=#c_literal{anno=A,val=erlang},
+ name=#c_literal{anno=A,val=is_map},
+ args=[M1]}],
+ body=[M3]}],
+ Eps = Eps0 ++ Eps1,
+ {#icase{anno=#a{anno=A},args=[],clauses=Cs,fc=Fc},Eps,St2};
+ false ->
+ %% Not a map source. The update will always fail.
+ St2 = add_warning(L, badmap, St1),
+ #iclause{body=[Fail]} = Fc,
+ {Fail,Eps0,St2}
+ end.
+
+badmap_term(_Map, #core{in_guard=true}) ->
+ %% The code generator cannot handle complex error reasons
+ %% in guards. But the exact error reason does not matter anyway
+ %% since it is not user-visible.
+ #c_literal{val=badmap};
+badmap_term(Map, #core{in_guard=false}) ->
+ c_tuple([#c_literal{val=badmap},Map]).
+
+map_build_pairs(Map, Es0, Ann, St0) ->
+ {Es,Pre,St1} = map_build_pairs_1(Es0, St0),
+ {ann_c_map(Ann, Map, Es),Pre,St1}.
+
+map_build_pairs_1([{Op0,L,K0,V0}|Es], St0) ->
+ {K,Pre0,St1} = safe(K0, St0),
+ {V,Pre1,St2} = safe(V0, St1),
+ {Pairs,Pre2,St3} = map_build_pairs_1(Es, St2),
+ As = lineno_anno(L, St3),
+ Op = map_op(Op0),
+ Pair = cerl:ann_c_map_pair(As, Op, K, V),
+ {[Pair|Pairs],Pre0++Pre1++Pre2,St3};
+map_build_pairs_1([], St) ->
+ {[],[],St}.
+
+map_op(map_field_assoc) -> #c_literal{val=assoc};
+map_op(map_field_exact) -> #c_literal{val=exact}.
+
+is_valid_map_src(#c_literal{val = M}) when is_map(M) -> true;
+is_valid_map_src(#c_var{}=Var) -> not cerl:is_c_fname(Var);
+is_valid_map_src(_) -> false.
%% try_exception([ExcpClause], St) -> {[ExcpVar],Handler,St}.
try_exception(Ecs0, St0) ->
%% Note that Tag is not needed for rethrow - it is already in Info.
{Evs,St1} = new_vars(3, St0), % Tag, Value, Info
- {Ecs1,St2} = clauses(Ecs0, St1),
+ {Ecs1,Ceps,St2} = clauses(Ecs0, St1),
[_,Value,Info] = Evs,
- Ec = #iclause{anno=#a{anno=[compiler_generated]},
+ LA = case Ecs1 of
+ [] -> [];
+ [C|_] -> get_lineno_anno(C)
+ end,
+ Ec = #iclause{anno=#a{anno=[compiler_generated|LA]},
pats=[c_tuple(Evs)],guard=[#c_literal{val=true}],
body=[#iprimop{anno=#a{}, %Must have an #a{}
name=#c_literal{val=raise},
args=[Info,Value]}]},
- Hs = [#icase{anno=#a{},args=[c_tuple(Evs)],clauses=Ecs1,fc=Ec}],
- {Evs,Hs,St2}.
+ Hs = [#icase{anno=#a{anno=LA},args=[c_tuple(Evs)],clauses=Ecs1,fc=Ec}],
+ {Evs,Ceps++Hs,St2}.
try_after(As, St0) ->
%% See above.
- {Evs,St1} = new_vars(3, St0), % Tag, Value, Info
+ {Evs,St1} = new_vars(3, St0), % Tag, Value, Info
[_,Value,Info] = Evs,
- B = As ++ [#iprimop{anno=#a{}, %Must have an #a{}
- name=#c_literal{val=raise},
- args=[Info,Value]}],
+ B = As ++ [#iprimop{anno=#a{}, % Must have an #a{}
+ name=#c_literal{val=raise},
+ args=[Info,Value]}],
Ec = #iclause{anno=#a{anno=[compiler_generated]},
pats=[c_tuple(Evs)],guard=[#c_literal{val=true}],
body=B},
@@ -748,10 +928,10 @@ constant_bin_1(Es) ->
({float,_,F}, B) -> {value,F,B};
({atom,_,undefined}, B) -> {value,undefined,B}
end,
- case catch eval_bits:expr_grp(Es, EmptyBindings, EvalFun) of
+ try eval_bits:expr_grp(Es, EmptyBindings, EvalFun) of
{value,Bin,EmptyBindings} ->
- Bin;
- _ ->
+ Bin
+ catch error:_ ->
error
end.
@@ -798,7 +978,7 @@ verify_suitable_fields([]) -> ok.
%% (We don't need an exact result for this purpose.)
count_bits(Int) ->
- count_bits_1(abs_line(Int), 64).
+ count_bits_1(abs(Int), 64).
count_bits_1(0, Bits) -> Bits;
count_bits_1(Int, Bits) -> count_bits_1(Int bsr 64, Bits+64).
@@ -836,148 +1016,62 @@ bitstr({bin_element,_,E0,Size0,[Type,{unit,Unit}|Flags]}, St0) ->
flags=#c_literal{val=Flags}},
Eps ++ Eps2,St2}.
-%% fun_tq(Id, [Clauses], Line, State) -> {Fun,[PreExp],State}.
+%% fun_tq(Id, [Clauses], Line, State, NameInfo) -> {Fun,[PreExp],State}.
-fun_tq({_,_,Name}=Id, Cs0, L, St0) ->
+fun_tq({_,_,Name}=Id, Cs0, L, St0, NameInfo) ->
Arity = clause_arity(hd(Cs0)),
- {Cs1,St1} = clauses(Cs0, St0),
+ {Cs1,Ceps,St1} = clauses(Cs0, St0),
{Args,St2} = new_vars(Arity, St1),
{Ps,St3} = new_vars(Arity, St2), %Need new variables here
- Anno = lineno_anno(L, St3),
+ Anno = full_anno(L, St3),
Fc = function_clause(Ps, Anno, {Name,Arity}),
Fun = #ifun{anno=#a{anno=Anno},
id=[{id,Id}], %We KNOW!
- vars=Args,clauses=Cs1,fc=Fc},
- {Fun,[],St3}.
+ vars=Args,clauses=Cs1,fc=Fc,name=NameInfo},
+ {Fun,Ceps,St3}.
%% lc_tq(Line, Exp, [Qualifier], Mc, State) -> {LetRec,[PreExp],State}.
%% This TQ from Simon PJ pp 127-138.
-%% This gets a bit messy as we must transform all directly here. We
-%% recognise guard tests and try to fold them together and join to a
-%% preceding generators, this should give us better and more compact
-%% code.
-lc_tq(Line, E, [{generate,Lg,P,G}|Qs0], Mc, St0) ->
- {Gs,Qs1} = splitwith(fun is_guard_test/1, Qs0),
+lc_tq(Line, E, [#igen{anno=GAnno,ceps=Ceps,
+ acc_pat=AccPat,acc_guard=AccGuard,
+ skip_pat=SkipPat,tail=Tail,tail_pat=TailPat,
+ arg={Pre,Arg}}|Qs], Mc, St0) ->
{Name,St1} = new_fun_name("lc", St0),
- {Head,St2} = new_var(St1),
- {Tname,St3} = new_var_name(St2),
- LA = lineno_anno(Line, St3),
- LAnno = #a{anno=LA},
- Tail = #c_var{anno=LA,name=Tname},
- {Arg,St4} = new_var(St3),
- {Nc,[],St5} = expr({call,Lg,{atom,Lg,Name},[{var,Lg,Tname}]}, St4),
- {Guardc,St6} = lc_guard_tests(Gs, St5), %These are always flat!
- {Lc,Lps,St7} = lc_tq(Line, E, Qs1, Nc, St6),
- {Pc,St8} = list_gen_pattern(P, Line, St7),
- {Gc,Gps,St9} = safe(G, St8), %Will be a function argument!
- Fc = function_clause([Arg], LA, {Name,1}),
-
- %% Avoid constructing a default clause if the list comprehension
- %% only has a variable as generator and there are no guard
- %% tests. In other words, if the comprehension is equivalent to
- %% lists:map/2.
- Cs0 = case {Guardc, Pc} of
- {[], #c_var{}} ->
- [#iclause{anno=LAnno,
- pats=[#c_literal{anno=LA,val=[]}],guard=[],
- body=[Mc]}];
- _ ->
- [#iclause{anno=#a{anno=[compiler_generated|LA]},
- pats=[ann_c_cons(LA, Head, Tail)],
- guard=[],
- body=[Nc]},
- #iclause{anno=LAnno,
- pats=[#c_literal{anno=LA,val=[]}],guard=[],
- body=[Mc]}]
- end,
- Cs = case Pc of
- nomatch -> Cs0;
- _ ->
- [#iclause{anno=LAnno,
- pats=[ann_c_cons(LA, Pc, Tail)],
- guard=Guardc,
- body=Lps ++ [Lc]}|Cs0]
- end,
- Fun = #ifun{anno=LAnno,id=[],vars=[Arg],clauses=Cs,fc=Fc},
- {#iletrec{anno=LAnno,defs=[{{Name,1},Fun}],
- body=Gps ++ [#iapply{anno=LAnno,
- op=#c_var{anno=LA,name={Name,1}},
- args=[Gc]}]},
- [],St9};
-lc_tq(Line, E, [{b_generate,Lg,P,G}|Qs0], Mc, St0) ->
- {Gs,Qs1} = splitwith(fun is_guard_test/1, Qs0),
- {Name,St1} = new_fun_name("blc", St0),
LA = lineno_anno(Line, St1),
LAnno = #a{anno=LA},
- HeadBinPattern = pattern(P, St1),
- #c_binary{segments=Ps0} = HeadBinPattern,
- {Ps,Tail,St2} = append_tail_segment(Ps0, St1),
- {EPs,St3} = emasculate_segments(Ps, St2),
- Pattern = HeadBinPattern#c_binary{segments=Ps},
- EPattern = HeadBinPattern#c_binary{segments=EPs},
- {Arg,St4} = new_var(St3),
- {Guardc,St5} = lc_guard_tests(Gs, St4), %These are always flat!
- Tname = Tail#c_var.name,
- {Nc,[],St6} = expr({call,Lg,{atom,Lg,Name},[{var,Lg,Tname}]}, St5),
- {Bc,Bps,St7} = lc_tq(Line, E, Qs1, Nc, St6),
- {Gc,Gps,St10} = safe(G, St7), %Will be a function argument!
- Fc = function_clause([Arg], LA, {Name,1}),
- {TailSegList,_,St} = append_tail_segment([], St10),
- Cs = [#iclause{anno=#a{anno=[compiler_generated|LA]},
- pats=[Pattern],
- guard=Guardc,
- body=Bps ++ [Bc]},
- #iclause{anno=#a{anno=[compiler_generated|LA]},
- pats=[EPattern],
- guard=[],
- body=[#iapply{anno=LAnno,
- op=#c_var{anno=LA,name={Name,1}},
- args=[Tail]}]},
- #iclause{anno=LAnno,
- pats=[#c_binary{anno=LA,segments=TailSegList}],guard=[],
- body=[Mc]}],
- Fun = #ifun{anno=LAnno,id=[],vars=[Arg],clauses=Cs,fc=Fc},
- {#iletrec{anno=LAnno,defs=[{{Name,1},Fun}],
- body=Gps ++ [#iapply{anno=LAnno,
- op=#c_var{anno=LA,name={Name,1}},
- args=[Gc]}]},
- [],St};
-lc_tq(Line, E, [Fil0|Qs0], Mc, St0) ->
- %% Special case sequences guard tests.
- LA = lineno_anno(element(2, Fil0), St0),
- LAnno = #a{anno=LA},
- case is_guard_test(Fil0) of
- true ->
- {Gs0,Qs1} = splitwith(fun is_guard_test/1, Qs0),
- {Lc,Lps,St1} = lc_tq(Line, E, Qs1, Mc, St0),
- {Gs,St2} = lc_guard_tests([Fil0|Gs0], St1), %These are always flat!
- {#icase{anno=LAnno,
- args=[],
- clauses=[#iclause{anno=LAnno,pats=[],
- guard=Gs,body=Lps ++ [Lc]}],
- fc=#iclause{anno=LAnno,pats=[],guard=[],body=[Mc]}},
- [],St2};
- false ->
- {Lc,Lps,St1} = lc_tq(Line, E, Qs0, Mc, St0),
- {Fpat,St2} = new_var(St1),
- Fc = fail_clause([Fpat], LA,
- c_tuple([#c_literal{val=case_clause},Fpat])),
- %% Do a novars little optimisation here.
- {Filc,Fps,St3} = novars(Fil0, St2),
- {#icase{anno=LAnno,
- args=[Filc],
- clauses=[#iclause{anno=LAnno,
- pats=[#c_literal{anno=LA,val=true}],
- guard=[],
- body=Lps ++ [Lc]},
- #iclause{anno=LAnno#a{anno=[compiler_generated|LA]},
- pats=[#c_literal{anno=LA,val=false}],
- guard=[],
- body=[Mc]}],
- fc=Fc},
- Fps,St3}
- end;
+ F = #c_var{anno=LA,name={Name,1}},
+ Nc = #iapply{anno=GAnno,op=F,args=[Tail]},
+ {Var,St2} = new_var(St1),
+ Fc = function_clause([Var], LA, {Name,1}),
+ TailClause = #iclause{anno=LAnno,pats=[TailPat],guard=[],body=[Mc]},
+ Cs0 = case {AccPat,AccGuard} of
+ {SkipPat,[]} ->
+ %% Skip and accumulator patterns are the same and there is
+ %% no guard, no need to generate a skip clause.
+ [TailClause];
+ _ ->
+ [#iclause{anno=#a{anno=[compiler_generated|LA]},
+ pats=[SkipPat],guard=[],body=[Nc]},
+ TailClause]
+ end,
+ {Cs,St4} = case AccPat of
+ nomatch ->
+ %% The accumulator pattern never matches, no need
+ %% for an accumulator clause.
+ {Cs0,St2};
+ _ ->
+ {Lc,Lps,St3} = lc_tq(Line, E, Qs, Nc, St2),
+ {[#iclause{anno=LAnno,pats=[AccPat],guard=AccGuard,
+ body=Lps ++ [Lc]}|Cs0],
+ St3}
+ end,
+ Fun = #ifun{anno=LAnno,id=[],vars=[Var],clauses=Cs,fc=Fc},
+ {#iletrec{anno=LAnno#a{anno=[list_comprehension|LA]},defs=[{{Name,1},Fun}],
+ body=Pre ++ [#iapply{anno=LAnno,op=F,args=[Arg]}]},
+ Ceps,St4};
+lc_tq(Line, E, [#ifilter{}=Filter|Qs], Mc, St) ->
+ filter_tq(Line, E, Filter, Mc, St, Qs, fun lc_tq/5);
lc_tq(Line, E0, [], Mc0, St0) ->
{H1,Hps,St1} = safe(E0, St0),
{T1,Tps,St} = force_safe(Mc0, St1),
@@ -987,174 +1081,249 @@ lc_tq(Line, E0, [], Mc0, St0) ->
%% bc_tq(Line, Exp, [Qualifier], More, State) -> {LetRec,[PreExp],State}.
%% This TQ from Gustafsson ERLANG'05.
-%% This gets a bit messy as we must transform all directly here. We
-%% recognise guard tests and try to fold them together and join to a
-%% preceding generators, this should give us better and more compact
-%% code.
%% More could be transformed before calling bc_tq.
-bc_tq(Line, Exp, Qualifiers, _, St0) ->
+bc_tq(Line, Exp, Qs0, St0) ->
{BinVar,St1} = new_var(St0),
- {Sz,SzPre,St2} = bc_initial_size(Exp, Qualifiers, St1),
- {E,BcPre,St} = bc_tq1(Line, Exp, Qualifiers, BinVar, St2),
+ {Sz,SzPre,St2} = bc_initial_size(Exp, Qs0, St1),
+ {Qs,St3} = preprocess_quals(Line, Qs0, St2),
+ {E,BcPre,St} = bc_tq1(Line, Exp, Qs, BinVar, St3),
Pre = SzPre ++
[#iset{var=BinVar,
arg=#iprimop{name=#c_literal{val=bs_init_writable},
args=[Sz]}}] ++ BcPre,
{E,Pre,St}.
-bc_tq1(Line, E, [{generate,Lg,P,G}|Qs0], AccExpr, St0) ->
- {Gs,Qs1} = splitwith(fun is_guard_test/1, Qs0),
+bc_tq1(Line, E, [#igen{anno=GAnno,ceps=Ceps,
+ acc_pat=AccPat,acc_guard=AccGuard,
+ skip_pat=SkipPat,tail=Tail,tail_pat=TailPat,
+ arg={Pre,Arg}}|Qs], Mc, St0) ->
{Name,St1} = new_fun_name("lbc", St0),
LA = lineno_anno(Line, St1),
- {[Head,Tail,AccVar],St2} = new_vars(LA, 3, St1),
LAnno = #a{anno=LA},
- {Arg,St3} = new_var(St2),
- NewMore = {call,Lg,{atom,Lg,Name},[{var,Lg,Tail#c_var.name},
- {var,Lg,AccVar#c_var.name}]},
- {Guardc,St4} = lc_guard_tests(Gs, St3), %These are always flat!
- {Lc,Lps,St5} = bc_tq1(Line, E, Qs1, AccVar, St4),
- {Nc,Nps,St6} = expr(NewMore, St5),
- {Pc,St7} = list_gen_pattern(P, Line, St6),
- {Gc,Gps,St8} = safe(G, St7), %Will be a function argument!
- Fc = function_clause([Arg,AccVar], LA, {Name,2}),
- Cs0 = case {Guardc, Pc} of
- {[], #c_var{}} ->
- [#iclause{anno=LAnno,
- pats=[#c_literal{anno=LA,val=[]},AccVar],guard=[],
- body=[AccVar]}];
- _ ->
- [#iclause{anno=#a{anno=[compiler_generated|LA]},
- pats=[ann_c_cons(LA, Head, Tail),AccVar],
- guard=[],
- body=Nps ++ [Nc]},
- #iclause{anno=LAnno,
- pats=[#c_literal{anno=LA,val=[]},AccVar],guard=[],
- body=[AccVar]}]
- end,
- Cs = case Pc of
- nomatch -> Cs0;
- _ ->
- Body = Lps ++ Nps ++ [#iset{var=AccVar,arg=Lc},Nc],
- [#iclause{anno=LAnno,
- pats=[ann_c_cons(LA,Pc,Tail),AccVar],
- guard=Guardc,
- body=Body}|Cs0]
- end,
- Fun = #ifun{anno=LAnno,id=[],vars=[Arg,AccVar],clauses=Cs,fc=Fc},
- {#iletrec{anno=LAnno,defs=[{{Name,2},Fun}],
- body=Gps ++ [#iapply{anno=LAnno,
- op=#c_var{anno=LA,name={Name,2}},
- args=[Gc,AccExpr]}]},
- [],St8};
-bc_tq1(Line, E, [{b_generate,Lg,P,G}|Qs0], AccExpr, St0) ->
- {Gs,Qs1} = splitwith(fun is_guard_test/1, Qs0),
- {Name,St1} = new_fun_name("lbc", St0),
- LA = lineno_anno(Line, St1),
- {AccVar,St2} = new_var(LA, St1),
- LAnno = #a{anno=LA},
- HeadBinPattern = pattern(P, St2),
- #c_binary{segments=Ps0} = HeadBinPattern,
- {Ps,Tail,St3} = append_tail_segment(Ps0, St2),
- {EPs,St4} = emasculate_segments(Ps, St3),
- Pattern = HeadBinPattern#c_binary{segments=Ps},
- EPattern = HeadBinPattern#c_binary{segments=EPs},
- {Arg,St5} = new_var(St4),
- NewMore = {call,Lg,{atom,Lg,Name},[{var,Lg,Tail#c_var.name},
- {var,Lg,AccVar#c_var.name}]},
- {Guardc,St6} = lc_guard_tests(Gs, St5), %These are always flat!
- {Bc,Bps,St7} = bc_tq1(Line, E, Qs1, AccVar, St6),
- {Nc,Nps,St8} = expr(NewMore, St7),
- {Gc,Gps,St9} = safe(G, St8), %Will be a function argument!
- Fc = function_clause([Arg,AccVar], LA, {Name,2}),
- Body = Bps ++ Nps ++ [#iset{var=AccVar,arg=Bc},Nc],
- {TailSegList,_,St} = append_tail_segment([], St9),
- Cs = [#iclause{anno=LAnno,
- pats=[Pattern,AccVar],
- guard=Guardc,
- body=Body},
- #iclause{anno=#a{anno=[compiler_generated|LA]},
- pats=[EPattern,AccVar],
- guard=[],
- body=Nps ++ [Nc]},
- #iclause{anno=LAnno,
- pats=[#c_binary{anno=LA,segments=TailSegList},AccVar],
- guard=[],
- body=[AccVar]}],
- Fun = #ifun{anno=LAnno,id=[],vars=[Arg,AccVar],clauses=Cs,fc=Fc},
- {#iletrec{anno=LAnno,defs=[{{Name,2},Fun}],
- body=Gps ++ [#iapply{anno=LAnno,
- op=#c_var{anno=LA,name={Name,2}},
- args=[Gc,AccExpr]}]},
- [],St};
-bc_tq1(Line, E, [Fil0|Qs0], AccVar, St0) ->
- %% Special case sequences guard tests.
- LA = lineno_anno(element(2, Fil0), St0),
- LAnno = #a{anno=LA},
- case is_guard_test(Fil0) of
- true ->
- {Gs0,Qs1} = splitwith(fun is_guard_test/1, Qs0),
- {Bc,Bps,St1} = bc_tq1(Line, E, Qs1, AccVar, St0),
- {Gs,St} = lc_guard_tests([Fil0|Gs0], St1), %These are always flat!
- {#icase{anno=LAnno,
- args=[],
- clauses=[#iclause{anno=LAnno,
- pats=[],
- guard=Gs,body=Bps ++ [Bc]}],
- fc=#iclause{anno=LAnno,pats=[],guard=[],body=[AccVar]}},
- [],St};
- false ->
- {Bc,Bps,St1} = bc_tq1(Line, E, Qs0, AccVar, St0),
- {Fpat,St2} = new_var(St1),
- Fc = fail_clause([Fpat], LA,
- c_tuple([#c_literal{val=case_clause},Fpat])),
- %% Do a novars little optimisation here.
- {Filc,Fps,St} = novars(Fil0, St2),
- {#icase{anno=LAnno,
- args=[Filc],
- clauses=[#iclause{anno=LAnno,
- pats=[#c_literal{anno=LA,val=true}],
- guard=[],
- body=Bps ++ [Bc]},
- #iclause{anno=LAnno#a{anno=[compiler_generated|LA]},
- pats=[#c_literal{anno=LA,val=false}],
- guard=[],
- body=[AccVar]}],
- fc=Fc},
- Fps,St}
- end;
+ {Vars=[_,AccVar],St2} = new_vars(LA, 2, St1),
+ F = #c_var{anno=LA,name={Name,2}},
+ Nc = #iapply{anno=GAnno,op=F,args=[Tail,AccVar]},
+ Fc = function_clause(Vars, LA, {Name,2}),
+ TailClause = #iclause{anno=LAnno,pats=[TailPat,AccVar],guard=[],
+ body=[AccVar]},
+ Cs0 = case {AccPat,AccGuard} of
+ {SkipPat,[]} ->
+ %% Skip and accumulator patterns are the same and there is
+ %% no guard, no need to generate a skip clause.
+ [TailClause];
+ _ ->
+ [#iclause{anno=#a{anno=[compiler_generated|LA]},
+ pats=[SkipPat,AccVar],guard=[],body=[Nc]},
+ TailClause]
+ end,
+ {Cs,St4} = case AccPat of
+ nomatch ->
+ %% The accumulator pattern never matches, no need
+ %% for an accumulator clause.
+ {Cs0,St2};
+ _ ->
+ {Bc,Bps,St3} = bc_tq1(Line, E, Qs, AccVar, St2),
+ Body = Bps ++ [#iset{var=AccVar,arg=Bc},Nc],
+ {[#iclause{anno=LAnno,
+ pats=[AccPat,AccVar],guard=AccGuard,
+ body=Body}|Cs0],
+ St3}
+ end,
+ Fun = #ifun{anno=LAnno,id=[],vars=Vars,clauses=Cs,fc=Fc},
+ {#iletrec{anno=LAnno#a{anno=[list_comprehension|LA]},defs=[{{Name,2},Fun}],
+ body=Pre ++ [#iapply{anno=LAnno,op=F,args=[Arg,Mc]}]},
+ Ceps,St4};
+bc_tq1(Line, E, [#ifilter{}=Filter|Qs], Mc, St) ->
+ filter_tq(Line, E, Filter, Mc, St, Qs, fun bc_tq1/5);
bc_tq1(_, {bin,Bl,Elements}, [], AccVar, St0) ->
- {E,Pre,St} = expr({bin,Bl,[{bin_element,Bl,
- {var,Bl,AccVar#c_var.name},
- {atom,Bl,all},
- [binary,{unit,1}]}|Elements]}, St0),
+ bc_tq_build(Bl, [], AccVar, Elements, St0);
+bc_tq1(Line, E0, [], AccVar, St0) ->
+ BsFlags = [binary,{unit,1}],
+ BsSize = {atom,Line,all},
+ {E1,Pre0,St1} = safe(E0, St0),
+ case E1 of
+ #c_var{name=VarName} ->
+ Var = {var,Line,VarName},
+ Els = [{bin_element,Line,Var,BsSize,BsFlags}],
+ bc_tq_build(Line, Pre0, AccVar, Els, St1);
+ #c_literal{val=Val} when is_bitstring(Val) ->
+ Bits = bit_size(Val),
+ <<Int0:Bits>> = Val,
+ Int = {integer,Line,Int0},
+ Sz = {integer,Line,Bits},
+ Els = [{bin_element,Line,Int,Sz,[integer,{unit,1},big]}],
+ bc_tq_build(Line, Pre0, AccVar, Els, St1);
+ _ ->
+ %% Any other safe (cons, tuple, literal) is not a
+ %% bitstring. Force the evaluation to fail (and
+ %% generate a warning).
+ Els = [{bin_element,Line,{atom,Line,bad_value},BsSize,BsFlags}],
+ bc_tq_build(Line, Pre0, AccVar, Els, St1)
+ end.
+
+bc_tq_build(Line, Pre0, #c_var{name=AccVar}, Elements0, St0) ->
+ Elements = [{bin_element,Line,{var,Line,AccVar},{atom,Line,all},
+ [binary,{unit,1}]}|Elements0],
+ {E,Pre,St} = expr({bin,Line,Elements}, St0),
#a{anno=A} = Anno0 = get_anno(E),
Anno = Anno0#a{anno=[compiler_generated,single_use|A]},
- %%Anno = Anno0#a{anno=[compiler_generated|A]},
- {set_anno(E, Anno),Pre,St}.
-
-append_tail_segment(Segs, St) ->
- app_tail_seg(Segs, St, []).
-
-app_tail_seg([#c_bitstr{val=Var0,size=#c_literal{val=all}}=Seg0]=L,
- St0, Acc) ->
- case Var0 of
- #c_var{name='_'} ->
- {Var,St} = new_var(St0),
- Seg = Seg0#c_bitstr{val=Var},
- {reverse(Acc, [Seg]),Var,St};
- #c_var{} ->
- {reverse(Acc, L),Var0,St0}
+ {set_anno(E, Anno),Pre0++Pre,St}.
+
+
+%% filter_tq(Line, Expr, Filter, Mc, State, [Qualifier], TqFun) ->
+%% {Case,[PreExpr],State}.
+%% Transform an intermediate comprehension filter to its intermediate case
+%% representation.
+
+filter_tq(Line, E, #ifilter{anno=#a{anno=LA}=LAnno,arg={Pre,Arg}},
+ Mc, St0, Qs, TqFun) ->
+ %% The filter is an expression, it is compiled to a case of degree 1 with
+ %% 3 clauses, one accumulating, one skipping and the final one throwing
+ %% {case_clause,Value} where Value is the result of the filter and is not a
+ %% boolean.
+ {Lc,Lps,St1} = TqFun(Line, E, Qs, Mc, St0),
+ {FailPat,St2} = new_var(St1),
+ Fc = fail_clause([FailPat], LA,
+ c_tuple([#c_literal{val=case_clause},FailPat])),
+ {#icase{anno=LAnno#a{anno=[list_comprehension|LA]},args=[Arg],
+ clauses=[#iclause{anno=LAnno,
+ pats=[#c_literal{val=true}],guard=[],
+ body=Lps ++ [Lc]},
+ #iclause{anno=LAnno#a{anno=[compiler_generated|LA]},
+ pats=[#c_literal{val=false}],guard=[],
+ body=[Mc]}],
+ fc=Fc},
+ Pre,St2};
+filter_tq(Line, E, #ifilter{anno=#a{anno=LA}=LAnno,arg=Guard},
+ Mc, St0, Qs, TqFun) when is_list(Guard) ->
+ %% Otherwise it is a guard, compiled to a case of degree 0 with 2 clauses,
+ %% the first matches if the guard succeeds and the comprehension continues
+ %% or the second one is selected and the current element is skipped.
+ {Lc,Lps,St1} = TqFun(Line, E, Qs, Mc, St0),
+ {#icase{anno=LAnno#a{anno=[list_comprehension|LA]},args=[],
+ clauses=[#iclause{anno=LAnno,pats=[],guard=Guard,body=Lps ++ [Lc]}],
+ fc=#iclause{anno=LAnno#a{anno=[compiler_generated|LA]},
+ pats=[],guard=[],body=[Mc]}},
+ [],St1}.
+
+%% preprocess_quals(Line, [Qualifier], State) -> {[Qualifier'],State}.
+%% Preprocess a list of Erlang qualifiers into its intermediate representation,
+%% represented as a list of #igen{} and #ifilter{} records. We recognise guard
+%% tests and try to fold them together and join to a preceding generators, this
+%% should give us better and more compact code.
+
+preprocess_quals(Line, Qs, St) ->
+ preprocess_quals(Line, Qs, St, []).
+
+preprocess_quals(Line, [Q|Qs0], St0, Acc) ->
+ case is_generator(Q) of
+ true ->
+ {Gs,Qs} = splitwith(fun is_guard_test/1, Qs0),
+ {Gen,St} = generator(Line, Q, Gs, St0),
+ preprocess_quals(Line, Qs, St, [Gen|Acc]);
+ false ->
+ LAnno = #a{anno=lineno_anno(get_qual_anno(Q), St0)},
+ case is_guard_test(Q) of
+ true ->
+ %% When a filter is a guard test, its argument in the
+ %% #ifilter{} record is a list as returned by
+ %% lc_guard_tests/2.
+ {Gs,Qs} = splitwith(fun is_guard_test/1, Qs0),
+ {Cg,St} = lc_guard_tests([Q|Gs], St0),
+ Filter = #ifilter{anno=LAnno,arg=Cg},
+ preprocess_quals(Line, Qs, St, [Filter|Acc]);
+ false ->
+ %% Otherwise, it is a pair {Pre,Arg} as in a generator
+ %% input.
+ {Ce,Pre,St} = novars(Q, St0),
+ Filter = #ifilter{anno=LAnno,arg={Pre,Ce}},
+ preprocess_quals(Line, Qs0, St, [Filter|Acc])
+ end
end;
-app_tail_seg([H|T], St, Acc) ->
- app_tail_seg(T, St, [H|Acc]);
-app_tail_seg([], St0, Acc) ->
+preprocess_quals(_, [], St, Acc) ->
+ {reverse(Acc),St}.
+
+is_generator({generate,_,_,_}) -> true;
+is_generator({b_generate,_,_,_}) -> true;
+is_generator(_) -> false.
+
+%% Retrieve the annotation from an Erlang AST form.
+%% (Use get_anno/1 to retrieve the annotation from Core Erlang forms).
+
+get_qual_anno(Abstract) -> element(2, Abstract).
+
+%%
+%% Generators are abstracted as sextuplets:
+%% - acc_pat is the accumulator pattern, e.g. [Pat|Tail] for Pat <- Expr.
+%% - acc_guard is the list of guards immediately following the current
+%% generator in the qualifier list input.
+%% - skip_pat is the skip pattern, e.g. <<X,_:X,Tail/bitstring>> for
+%% <<X,1:X>> <= Expr.
+%% - tail is the variable used in AccPat and SkipPat bound to the rest of the
+%% generator input.
+%% - tail_pat is the tail pattern, respectively [] and <<_/bitstring>> for list
+%% and bit string generators.
+%% - arg is a pair {Pre,Arg} where Pre is the list of expressions to be
+%% inserted before the comprehension function and Arg is the expression
+%% that it should be passed.
+%%
+
+%% generator(Line, Generator, Guard, State) -> {Generator',State}.
+%% Transform a given generator into its #igen{} representation.
+
+generator(Line, {generate,Lg,P0,E}, Gs, St0) ->
+ LA = lineno_anno(Line, St0),
+ GA = lineno_anno(Lg, St0),
+ {Head,Ceps,St1} = list_gen_pattern(P0, Line, St0),
+ {[Tail,Skip],St2} = new_vars(2, St1),
+ {Cg,St3} = lc_guard_tests(Gs, St2),
+ {AccPat,SkipPat} = case Head of
+ #c_var{} ->
+ %% If the generator pattern is a variable, the
+ %% pattern from the accumulator clause can be
+ %% reused in the skip one. lc_tq and bc_tq1 takes
+ %% care of dismissing the latter in that case.
+ Cons = ann_c_cons(LA, Head, Tail),
+ {Cons,Cons};
+ nomatch ->
+ %% If it never matches, there is no need for
+ %% an accumulator clause.
+ {nomatch,ann_c_cons(LA, Skip, Tail)};
+ _ ->
+ {ann_c_cons(LA, Head, Tail),
+ ann_c_cons(LA, Skip, Tail)}
+ end,
+ {Ce,Pre,St4} = safe(E, St3),
+ Gen = #igen{anno=#a{anno=GA},ceps=Ceps,
+ acc_pat=AccPat,acc_guard=Cg,skip_pat=SkipPat,
+ tail=Tail,tail_pat=#c_literal{anno=LA,val=[]},arg={Pre,Ce}},
+ {Gen,St4};
+generator(Line, {b_generate,Lg,P,E}, Gs, St0) ->
+ LA = lineno_anno(Line, St0),
+ GA = lineno_anno(Lg, St0),
+ {Cp = #c_binary{segments=Segs},[],St1} = pattern(P, St0),
+
+ %% The function append_tail_segment/2 keeps variable patterns as-is, making
+ %% it possible to have the same skip clause removal as with list generators.
+ {AccSegs,Tail,TailSeg,St2} = append_tail_segment(Segs, St1),
+ AccPat = Cp#c_binary{segments=AccSegs},
+ {Cg,St3} = lc_guard_tests(Gs, St2),
+ {SkipSegs,St4} = emasculate_segments(AccSegs, St3),
+ SkipPat = Cp#c_binary{segments=SkipSegs},
+ {Ce,Pre,St5} = safe(E, St4),
+ Gen = #igen{anno=#a{anno=GA},acc_pat=AccPat,acc_guard=Cg,skip_pat=SkipPat,
+ tail=Tail,tail_pat=#c_binary{anno=LA,segments=[TailSeg]},
+ arg={Pre,Ce}},
+ {Gen,St5}.
+
+append_tail_segment(Segs, St0) ->
{Var,St} = new_var(St0),
Tail = #c_bitstr{val=Var,size=#c_literal{val=all},
unit=#c_literal{val=1},
type=#c_literal{val=binary},
flags=#c_literal{val=[unsigned,big]}},
- {reverse(Acc, [Tail]),Var,St}.
+ {Segs++[Tail],Var,Tail,St}.
emasculate_segments(Segs, St) ->
emasculate_segments(Segs, St, []).
@@ -1165,7 +1334,7 @@ emasculate_segments([B|Rest], St0, Acc) ->
{Var,St1} = new_var(St0),
emasculate_segments(Rest, St1, [B#c_bitstr{val=Var}|Acc]);
emasculate_segments([], St, Acc) ->
- {lists:reverse(Acc),St}.
+ {reverse(Acc),St}.
lc_guard_tests([], St) -> {[],St};
lc_guard_tests(Gs0, St0) ->
@@ -1175,9 +1344,9 @@ lc_guard_tests(Gs0, St0) ->
list_gen_pattern(P0, Line, St) ->
try
- {pattern(P0, St),St}
+ pattern(P0,St)
catch
- nomatch -> {nomatch,add_warning(Line, nomatch, St)}
+ nomatch -> {nomatch,[],add_warning(Line, nomatch, St)}
end.
%%%
@@ -1221,7 +1390,9 @@ bc_elem_size({bin,_,El}, St0) ->
Vs = [V || {_,#c_var{name=V}} <- Vars0],
{E,Pre,St} = bc_mul_pairs(F, #c_literal{val=Bits}, [], St0),
{E,Pre,Vs,St}
- end.
+ end;
+bc_elem_size(_, _) ->
+ throw(impossible).
bc_elem_size_1([{bin_element,_,_,{integer,_,N},Flags}|Es], Bits, Vars) ->
{unit,U} = keyfind(unit, 1, Flags),
@@ -1397,9 +1568,22 @@ force_novars(#iapply{}=App, St) -> {App,[],St};
force_novars(#icall{}=Call, St) -> {Call,[],St};
force_novars(#ifun{}=Fun, St) -> {Fun,[],St}; %These are novars too
force_novars(#ibinary{}=Bin, St) -> {Bin,[],St};
+force_novars(#c_map{}=Bin, St) -> {Bin,[],St};
force_novars(Ce, St) ->
force_safe(Ce, St).
+
+%% safe_pattern_expr(Expr, State) -> {Cexpr,[PreExpr],State}.
+%% only literals and variables are safe expressions in patterns
+safe_pattern_expr(E,St0) ->
+ case safe(E,St0) of
+ {#c_var{},_,_}=Safe -> Safe;
+ {#c_literal{},_,_}=Safe -> Safe;
+ {Ce,Eps,St1} ->
+ {V,St2} = new_var(St1),
+ {V,Eps++[#iset{var=V,arg=Ce}],St2}
+ end.
+
%% safe(Expr, State) -> {Safe,[PreExpr],State}.
%% Generate an internal safe expression. These are simples without
%% binaries which can fail. At this level we do not need to do a
@@ -1410,6 +1594,15 @@ safe(E0, St0) ->
{Se,Sps,St2} = force_safe(E1, St1),
{Se,Eps ++ Sps,St2}.
+safe_fun(A0, E0, St0) ->
+ case safe(E0, St0) of
+ {#c_var{name={_,A1}}=E1,Eps,St1} when A1 =/= A0 ->
+ {V,St2} = new_var(St1),
+ {V,Eps ++ [#iset{var=V,arg=E1}],St2};
+ Result ->
+ Result
+ end.
+
safe_list(Es, St) ->
foldr(fun (E, {Ces,Esp,St0}) ->
{Ce,Ep,St1} = safe(E, St0),
@@ -1465,34 +1658,92 @@ fold_match({match,L,P0,E0}, P) ->
{{match,L,P0,P1},E1};
fold_match(E, P) -> {P,E}.
-%% pattern(Pattern, State) -> CorePat.
+%% pattern(Pattern, State) -> {CorePat,[PreExp],State}.
%% Transform a pattern by removing line numbers. We also normalise
%% aliases in patterns to standard form, {alias,Pat,[Var]}.
-
-pattern({var,L,V}, St) -> #c_var{anno=lineno_anno(L, St),name=V};
-pattern({char,L,C}, St) -> #c_literal{anno=lineno_anno(L, St),val=C};
-pattern({integer,L,I}, St) -> #c_literal{anno=lineno_anno(L, St),val=I};
-pattern({float,L,F}, St) -> #c_literal{anno=lineno_anno(L, St),val=F};
-pattern({atom,L,A}, St) -> #c_literal{anno=lineno_anno(L, St),val=A};
-pattern({string,L,S}, St) -> #c_literal{anno=lineno_anno(L, St),val=S};
-pattern({nil,L}, St) -> #c_literal{anno=lineno_anno(L, St),val=[]};
+%%
+%% In patterns we may have expressions
+%% 1) Binaries -> #c_bitstr{size=Expr}
+%% 2) Maps -> #c_map_pair{key=Expr}
+%%
+%% Both of these may generate pre-expressions since only bound variables
+%% or literals are allowed for these in core patterns.
+%%
+%% Therefor, we need to drag both the state and the collection of pre-expression
+%% around in the whole pattern transformation tree.
+
+pattern({var,L,V}, St) -> {#c_var{anno=lineno_anno(L, St),name=V},[],St};
+pattern({char,L,C}, St) -> {#c_literal{anno=lineno_anno(L, St),val=C},[],St};
+pattern({integer,L,I}, St) -> {#c_literal{anno=lineno_anno(L, St),val=I},[],St};
+pattern({float,L,F}, St) -> {#c_literal{anno=lineno_anno(L, St),val=F},[],St};
+pattern({atom,L,A}, St) -> {#c_literal{anno=lineno_anno(L, St),val=A},[],St};
+pattern({string,L,S}, St) -> {#c_literal{anno=lineno_anno(L, St),val=S},[],St};
+pattern({nil,L}, St) -> {#c_literal{anno=lineno_anno(L, St),val=[]},[],St};
pattern({cons,L,H,T}, St) ->
- ann_c_cons(lineno_anno(L, St), pattern(H, St), pattern(T, St));
+ {Ph,Eps1,St1} = pattern(H, St),
+ {Pt,Eps2,St2} = pattern(T, St1),
+ {annotate_cons(lineno_anno(L, St), Ph, Pt, St2),Eps1++Eps2,St2};
pattern({tuple,L,Ps}, St) ->
- ann_c_tuple(lineno_anno(L, St), pattern_list(Ps, St));
+ {Ps1,Eps,St1} = pattern_list(Ps,St),
+ {annotate_tuple(record_anno(L, St), Ps1, St),Eps,St1};
+pattern({map,L,Pairs}, St0) ->
+ {Ps,Eps,St1} = pattern_map_pairs(Pairs, St0),
+ {#c_map{anno=lineno_anno(L, St1),es=Ps,is_pat=true},Eps,St1};
pattern({bin,L,Ps}, St) ->
%% We don't create a #ibinary record here, since there is
%% no need to hold any used/new annotations in a pattern.
- #c_binary{anno=lineno_anno(L, St),segments=pat_bin(Ps, St)};
+ {#c_binary{anno=lineno_anno(L, St),segments=pat_bin(Ps, St)},[],St};
pattern({match,_,P1,P2}, St) ->
- pat_alias(pattern(P1, St), pattern(P2, St)).
+ {Cp1,Eps1,St1} = pattern(P1,St),
+ {Cp2,Eps2,St2} = pattern(P2,St1),
+ {pat_alias(Cp1,Cp2),Eps1++Eps2,St2}.
+
+%% pattern_map_pairs([MapFieldExact],State) -> [#c_map_pairs{}]
+pattern_map_pairs(Ps, St) ->
+ %% check literal key uniqueness
+ %% - guaranteed via aliasing map pairs
+ %% pattern all pairs in two steps
+ %% 1) Construct Core Pattern
+ %% 2) Alias Keys in Core Pattern
+ {CMapPairs, {Eps,St1}} = lists:mapfoldl(fun
+ (P,{EpsM,Sti0}) ->
+ {CMapPair,EpsP,Sti1} = pattern_map_pair(P,Sti0),
+ {CMapPair, {EpsM++EpsP,Sti1}}
+ end, {[],St}, Ps),
+ {pat_alias_map_pairs(CMapPairs),Eps,St1}.
+
+pattern_map_pair({map_field_exact,L,K,V}, St0) ->
+ {Ck,EpsK,St1} = safe_pattern_expr(K, St0),
+ {Cv,EpsV,St2} = pattern(V, St1),
+ {#c_map_pair{anno=lineno_anno(L, St2),
+ op=#c_literal{val=exact},
+ key=Ck,
+ val=Cv},EpsK++EpsV,St2}.
+
+pat_alias_map_pairs(Ps) ->
+ D = foldl(fun(#c_map_pair{key=K0}=Pair, D0) ->
+ K = cerl:set_ann(K0, []),
+ dict:append(K, Pair, D0)
+ end, dict:new(), Ps),
+ pat_alias_map_pairs_1(dict:to_list(D)).
+
+pat_alias_map_pairs_1([{_,[#c_map_pair{val=V0}=Pair|Vs]}|T]) ->
+ V = foldl(fun(#c_map_pair{val=V}, Pat) ->
+ pat_alias(V, Pat)
+ end, V0, Vs),
+ [Pair#c_map_pair{val=V}|pat_alias_map_pairs_1(T)];
+pat_alias_map_pairs_1([]) -> [].
%% pat_bin([BinElement], State) -> [BinSeg].
pat_bin(Ps, St) -> [pat_segment(P, St) || P <- Ps].
-pat_segment({bin_element,_,Term,Size,[Type,{unit,Unit}|Flags]}, St) ->
- #c_bitstr{val=pattern(Term, St),size=pattern(Size, St),
+pat_segment({bin_element,L,Val,Size,[Type,{unit,Unit}|Flags]}, St) ->
+ Anno = lineno_anno(L, St),
+ {Pval,[],St1} = pattern(Val,St),
+ {Psize,[],_St2} = pattern(Size,St1),
+ #c_bitstr{anno=Anno,
+ val=Pval,size=Psize,
unit=#c_literal{val=Unit},
type=#c_literal{val=Type},
flags=#c_literal{val=Flags}}.
@@ -1500,38 +1751,55 @@ pat_segment({bin_element,_,Term,Size,[Type,{unit,Unit}|Flags]}, St) ->
%% pat_alias(CorePat, CorePat) -> AliasPat.
%% Normalise aliases. Trap bad aliases by throwing 'nomatch'.
-pat_alias(#c_var{name=V1}, P2) -> #c_alias{var=#c_var{name=V1},pat=P2};
-pat_alias(P1, #c_var{name=V2}) -> #c_alias{var=#c_var{name=V2},pat=P1};
-pat_alias(#c_cons{}=Cons, #c_literal{anno=A,val=[H|T]}=S) ->
- pat_alias(Cons, ann_c_cons_skel(A, #c_literal{anno=A,val=H},
- S#c_literal{val=T}));
-pat_alias(#c_literal{anno=A,val=[H|T]}=S, #c_cons{}=Cons) ->
- pat_alias(ann_c_cons_skel(A, #c_literal{anno=A,val=H},
- S#c_literal{val=T}), Cons);
-pat_alias(#c_cons{anno=Anno,hd=H1,tl=T1}, #c_cons{hd=H2,tl=T2}) ->
- ann_c_cons(Anno, pat_alias(H1, H2), pat_alias(T1, T2));
-pat_alias(#c_tuple{anno=Anno,es=Es1}, #c_literal{val=T}) when is_tuple(T) ->
- Es2 = [#c_literal{val=E} || E <- tuple_to_list(T)],
- ann_c_tuple(Anno, pat_alias_list(Es1, Es2));
-pat_alias(#c_literal{anno=Anno,val=T}, #c_tuple{es=Es2}) when is_tuple(T) ->
- Es1 = [#c_literal{val=E} || E <- tuple_to_list(T)],
- ann_c_tuple(Anno, pat_alias_list(Es1, Es2));
-pat_alias(#c_tuple{anno=Anno,es=Es1}, #c_tuple{es=Es2}) ->
- ann_c_tuple(Anno, pat_alias_list(Es1, Es2));
-pat_alias(#c_alias{var=V1,pat=P1},
- #c_alias{var=V2,pat=P2}) ->
- if V1 =:= V2 -> #c_alias{var=V1,pat=pat_alias(P1, P2)};
- true -> #c_alias{var=V1,pat=#c_alias{var=V2,pat=pat_alias(P1, P2)}}
+pat_alias(#c_var{name=V1}=P, #c_var{name=V1}) -> P;
+pat_alias(#c_var{name=V1}=Var,
+ #c_alias{var=#c_var{name=V2},pat=Pat}=Alias) ->
+ if
+ V1 =:= V2 ->
+ Alias;
+ true ->
+ Alias#c_alias{pat=pat_alias(Var, Pat)}
+ end;
+pat_alias(#c_var{}=P1, P2) -> #c_alias{var=P1,pat=P2};
+
+pat_alias(#c_alias{var=#c_var{name=V1}}=Alias, #c_var{name=V1}) ->
+ Alias;
+pat_alias(#c_alias{var=#c_var{name=V1}=Var1,pat=P1},
+ #c_alias{var=#c_var{name=V2}=Var2,pat=P2}) ->
+ Pat = pat_alias(P1, P2),
+ if
+ V1 =:= V2 ->
+ #c_alias{var=Var1,pat=Pat};
+ true ->
+ pat_alias(Var1, pat_alias(Var2, Pat))
end;
-pat_alias(#c_alias{var=V1,pat=P1}, P2) ->
- #c_alias{var=V1,pat=pat_alias(P1, P2)};
-pat_alias(P1, #c_alias{var=V2,pat=P2}) ->
- #c_alias{var=V2,pat=pat_alias(P1, P2)};
+pat_alias(#c_alias{var=#c_var{}=Var,pat=P1}, P2) ->
+ #c_alias{var=Var,pat=pat_alias(P1, P2)};
+
+pat_alias(#c_map{es=Es1}=M, #c_map{es=Es2}) ->
+ M#c_map{es=pat_alias_map_pairs(Es1 ++ Es2)};
+
+pat_alias(P1, #c_var{}=Var) ->
+ #c_alias{var=Var,pat=P1};
+pat_alias(P1, #c_alias{pat=P2}=Alias) ->
+ Alias#c_alias{pat=pat_alias(P1, P2)};
+
pat_alias(P1, P2) ->
- case {set_anno(P1, []),set_anno(P2, [])} of
- {P,P} -> P;
+ %% Aliases between binaries are not allowed, so the only
+ %% legal patterns that remain are data patterns.
+ case cerl:is_data(P1) andalso cerl:is_data(P2) of
+ false -> throw(nomatch);
+ true -> ok
+ end,
+ Type = cerl:data_type(P1),
+ case cerl:data_type(P2) of
+ Type -> ok;
_ -> throw(nomatch)
- end.
+ end,
+ Es1 = cerl:data_es(P1),
+ Es2 = cerl:data_es(P2),
+ Es = pat_alias_list(Es1, Es2),
+ cerl:make_data(Type, Es).
%% pat_alias_list([A1], [A2]) -> [A].
@@ -1540,18 +1808,15 @@ pat_alias_list([A1|A1s], [A2|A2s]) ->
pat_alias_list([], []) -> [];
pat_alias_list(_, _) -> throw(nomatch).
-%% pattern_list([P], State) -> [P].
-
-pattern_list(Ps, St) -> [pattern(P, St) || P <- Ps].
+%% pattern_list([P], State) -> {[P],Exprs,St}
-%% first([A]) -> [A].
-%% last([A]) -> A.
+pattern_list([P0|Ps0], St0) ->
+ {P1,Eps,St1} = pattern(P0, St0),
+ {Ps1,Epsl,St2} = pattern_list(Ps0, St1),
+ {[P1|Ps1], Eps ++ Epsl, St2};
+pattern_list([], St) ->
+ {[],[],St}.
-first([_]) -> [];
-first([H|T]) -> [H|first(T)].
-
-last([L]) -> L;
-last([_|T]) -> last(T).
%% make_vars([Name]) -> [{Var,Name}].
@@ -1573,7 +1838,7 @@ new_var_name(#core{vcount=C}=St) ->
new_var(St) ->
new_var([], St).
-new_var(Anno, St0) ->
+new_var(Anno, St0) when is_list(Anno) ->
{New,St} = new_var_name(St0),
{#c_var{anno=Anno,name=New},St}.
@@ -1600,6 +1865,26 @@ fail_clause(Pats, Anno, Arg) ->
body=[#iprimop{anno=#a{anno=Anno},name=#c_literal{val=match_fail},
args=[Arg]}]}.
+annotate_tuple(A, Es, St) ->
+ case member(dialyzer, St#core.opts) of
+ true ->
+ %% Do not coalesce constant tuple elements. A Hack.
+ Node = cerl:ann_c_tuple(A, [cerl:c_var(any)]),
+ cerl:update_c_tuple_skel(Node, Es);
+ false ->
+ ann_c_tuple(A, Es)
+ end.
+
+annotate_cons(A, H, T, St) ->
+ case member(dialyzer, St#core.opts) of
+ true ->
+ %% Do not coalesce constant conses. A Hack.
+ Node= cerl:ann_c_cons(A, cerl:c_var(any), cerl:c_var(any)),
+ cerl:update_c_cons_skel(Node, H, T);
+ false ->
+ ann_c_cons(A, H, T)
+ end.
+
ubody(B, St) -> uexpr(B, [], St).
%% uclauses([Lclause], [KnownVar], State) -> {[Lclause],State}.
@@ -1611,7 +1896,7 @@ uclauses(Lcs, Ks, St0) ->
uclause(Cl0, Ks, St0) ->
{Cl1,_Pvs,Used,New,St1} = uclause(Cl0, Ks, Ks, St0),
- A0 = get_ianno(Cl1),
+ A0 = get_anno(Cl1),
A = A0#a{us=Used,ns=New},
{Cl1#iclause{anno=A},St1}.
@@ -1635,13 +1920,13 @@ uclause(#iclause{anno=Anno,pats=Ps0,guard=G0,body=B0}, Pks, Ks0, St0) ->
uguard([], [], _, St) -> {[],St};
uguard(Pg, [], Ks, St) ->
%% No guard, so fold together equality tests.
- uguard(first(Pg), [last(Pg)], Ks, St);
+ uguard(droplast(Pg), [last(Pg)], Ks, St);
uguard(Pg, Gs0, Ks, St0) ->
%% Gs0 must contain at least one element here.
{Gs3,St5} = foldr(fun (T, {Gs1,St1}) ->
{L,St2} = new_var(St1),
{R,St3} = new_var(St2),
- {[#iset{var=L,arg=T}] ++ first(Gs1) ++
+ {[#iset{var=L,arg=T}] ++ droplast(Gs1) ++
[#iset{var=R,arg=last(Gs1)},
#icall{anno=#a{}, %Must have an #a{}
module=#c_literal{val=erlang},
@@ -1655,27 +1940,22 @@ uguard(Pg, Gs0, Ks, St0) ->
%% uexprs([Kexpr], [KnownVar], State) -> {[Kexpr],State}.
uexprs([#imatch{anno=A,pat=P0,arg=Arg,fc=Fc}|Les], Ks, St0) ->
- %% Optimise for simple set of unbound variable.
- case upattern(P0, Ks, St0) of
- {#c_var{},[],_Pvs,_Pus,_} ->
- %% Throw our work away and just set to iset.
+ case upat_is_new_var(P0, Ks) of
+ true ->
+ %% Assignment to a new variable.
uexprs([#iset{var=P0,arg=Arg}|Les], Ks, St0);
- _Other ->
- %% Throw our work away and set to icase.
- if
- Les =:= [] ->
- %% Need to explicitly return match "value", make
- %% safe for efficiency.
- {La0,Lps,St1} = force_safe(Arg, St0),
- La = mark_compiler_generated(La0),
- Mc = #iclause{anno=A,pats=[P0],guard=[],body=[La]},
- uexprs(Lps ++ [#icase{anno=A,
- args=[La0],clauses=[Mc],fc=Fc}], Ks, St1);
- true ->
- Mc = #iclause{anno=A,pats=[P0],guard=[],body=Les},
- uexprs([#icase{anno=A,args=[Arg],
- clauses=[Mc],fc=Fc}], Ks, St0)
- end
+ false when Les =:= [] ->
+ %% Need to explicitly return match "value", make
+ %% safe for efficiency.
+ {La0,Lps,St1} = force_safe(Arg, St0),
+ La = mark_compiler_generated(La0),
+ Mc = #iclause{anno=A,pats=[P0],guard=[],body=[La]},
+ uexprs(Lps ++ [#icase{anno=A,
+ args=[La0],clauses=[Mc],fc=Fc}], Ks, St1);
+ false ->
+ Mc = #iclause{anno=A,pats=[P0],guard=[],body=Les},
+ uexprs([#icase{anno=A,args=[Arg],
+ clauses=[Mc],fc=Fc}], Ks, St0)
end;
uexprs([Le0|Les0], Ks, St0) ->
{Le1,St1} = uexpr(Le0, Ks, St0),
@@ -1683,6 +1963,15 @@ uexprs([Le0|Les0], Ks, St0) ->
{[Le1|Les1],St2};
uexprs([], _, St) -> {[],St}.
+%% upat_is_new_var(Pattern, [KnownVar]) -> true|false.
+%% Test whether the pattern is a single, previously unknown
+%% variable.
+
+upat_is_new_var(#c_var{name=V}, Ks) ->
+ not is_element(V, Ks);
+upat_is_new_var(_, _) ->
+ false.
+
%% Mark a "safe" as compiler-generated.
mark_compiler_generated(#c_cons{anno=A,hd=H,tl=T}) ->
ann_c_cons([compiler_generated|A], mark_compiler_generated(H),
@@ -1710,21 +1999,29 @@ uexpr(#iletrec{anno=A,defs=Fs0,body=B0}, Ks, St0) ->
{B1,St2} = uexprs(B0, Ks, St1),
Used = used_in_any(map(fun ({_,F}) -> F end, Fs1) ++ B1),
{#iletrec{anno=A#a{us=Used,ns=[]},defs=Fs1,body=B1},St2};
-uexpr(#icase{anno=A,args=As0,clauses=Cs0,fc=Fc0}, Ks, St0) ->
+uexpr(#icase{anno=#a{anno=Anno}=A,args=As0,clauses=Cs0,fc=Fc0}, Ks, St0) ->
%% As0 will never generate new variables.
{As1,St1} = uexpr_list(As0, Ks, St0),
{Cs1,St2} = uclauses(Cs0, Ks, St1),
{Fc1,St3} = uclause(Fc0, Ks, St2),
Used = union(used_in_any(As1), used_in_any(Cs1)),
- New = new_in_all(Cs1),
+ New = case member(list_comprehension, Anno) of
+ true -> [];
+ false -> new_in_all(Cs1)
+ end,
{#icase{anno=A#a{us=Used,ns=New},args=As1,clauses=Cs1,fc=Fc1},St3};
-uexpr(#ifun{anno=A,id=Id,vars=As,clauses=Cs0,fc=Fc0}, Ks0, St0) ->
+uexpr(#ifun{anno=A0,id=Id,vars=As,clauses=Cs0,fc=Fc0,name=Name}, Ks0, St0) ->
Avs = lit_list_vars(As),
- Ks1 = union(Avs, Ks0),
- {Cs1,St1} = ufun_clauses(Cs0, Ks1, St0),
- {Fc1,St2} = ufun_clause(Fc0, Ks1, St1),
- Used = subtract(intersection(used_in_any(Cs1), Ks0), Avs),
- {#ifun{anno=A#a{us=Used,ns=[]},id=Id,vars=As,clauses=Cs1,fc=Fc1},St2};
+ Ks1 = case Name of
+ unnamed -> Ks0;
+ {named,FName} -> union(subtract([FName], Avs), Ks0)
+ end,
+ Ks2 = union(Avs, Ks1),
+ {Cs1,St1} = ufun_clauses(Cs0, Ks2, St0),
+ {Fc1,St2} = ufun_clause(Fc0, Ks2, St1),
+ Used = subtract(intersection(used_in_any(Cs1), Ks1), Avs),
+ A1 = A0#a{us=Used,ns=[]},
+ {#ifun{anno=A1,id=Id,vars=As,clauses=Cs1,fc=Fc1,name=Name},St2};
uexpr(#iapply{anno=A,op=Op,args=As}, _, St) ->
Used = union(lit_vars(Op), lit_list_vars(As)),
{#iapply{anno=A#a{us=Used},op=Op,args=As},St};
@@ -1772,11 +2069,11 @@ uexpr(#ibinary{anno=A,segments=Ss}, _, St) ->
uexpr(#c_literal{}=Lit, _, St) ->
Anno = get_anno(Lit),
{set_anno(Lit, #a{us=[],anno=Anno}),St};
-uexpr(Lit, _, St) ->
- true = is_simple(Lit), %Sanity check!
- Vs = lit_vars(Lit),
- Anno = get_anno(Lit),
- {set_anno(Lit, #a{us=Vs,anno=Anno}),St}.
+uexpr(Simple, _, St) ->
+ true = is_simple(Simple), %Sanity check!
+ Vs = lit_vars(Simple),
+ Anno = get_anno(Simple),
+ {#isimple{anno=#a{us=Vs,anno=Anno},term=Simple},St}.
uexpr_list(Les0, Ks, St0) ->
mapfoldl(fun (Le, St) -> uexpr(Le, Ks, St) end, St0, Les0).
@@ -1790,7 +2087,7 @@ ufun_clauses(Lcs, Ks, St0) ->
ufun_clause(Cl0, Ks, St0) ->
{Cl1,Pvs,Used,_,St1} = uclause(Cl0, [], Ks, St0),
- A0 = get_ianno(Cl1),
+ A0 = get_anno(Cl1),
A = A0#a{us=subtract(intersection(Used, Ks), Pvs),ns=[]},
{Cl1#iclause{anno=A},St1}.
@@ -1805,7 +2102,8 @@ upattern(#c_var{name=V}=Var, Ks, St0) ->
true ->
{N,St1} = new_var_name(St0),
New = #c_var{name=N},
- Test = #icall{anno=#a{us=add_element(N, [V])},
+ LA = get_lineno_anno(Var),
+ Test = #icall{anno=#a{anno=LA,us=add_element(N, [V])},
module=#c_literal{val=erlang},
name=#c_literal{val='=:='},
args=[New,Var]},
@@ -1820,6 +2118,17 @@ upattern(#c_cons{hd=H0,tl=T0}=Cons, Ks, St0) ->
upattern(#c_tuple{es=Es0}=Tuple, Ks, St0) ->
{Es1,Esg,Esv,Eus,St1} = upattern_list(Es0, Ks, St0),
{Tuple#c_tuple{es=Es1},Esg,Esv,Eus,St1};
+upattern(#c_map{es=Es0}=Map, Ks, St0) ->
+ {Es1,Esg,Esv,Eus,St1} = upattern_list(Es0, Ks, St0),
+ {Map#c_map{es=Es1},Esg,Esv,Eus,St1};
+upattern(#c_map_pair{op=#c_literal{val=exact},key=K0,val=V0}=Pair,Ks,St0) ->
+ {V,Vg,Vn,Vu,St1} = upattern(V0, Ks, St0),
+ % A variable key must be considered used here
+ Ku = case K0 of
+ #c_var{name=Name} -> [Name];
+ _ -> []
+ end,
+ {Pair#c_map_pair{val=V},Vg,Vn,union(Ku,Vu),St1};
upattern(#c_binary{segments=Es0}=Bin, Ks, St0) ->
{Es1,Esg,Esv,Eus,St1} = upat_bin(Es0, Ks, St0),
{Bin#c_binary{segments=Es1},Esg,Esv,Eus,St1};
@@ -1910,7 +2219,7 @@ new_in_all([Le|Les]) ->
foldl(fun (L, Ns) -> intersection((get_anno(L))#a.ns, Ns) end,
(get_anno(Le))#a.ns, Les);
new_in_all([]) -> [].
-
+
%% The AfterVars are the variables which are used afterwards. We need
%% this to work out which variables are actually exported and used
%% from case/receive. In subblocks/clauses the AfterVars of the block
@@ -1942,7 +2251,8 @@ cguard(Gs, St0) ->
cexprs([#iset{var=#c_var{name=Name}=Var}=Iset], As, St) ->
%% Make return value explicit, and make Var true top level.
- cexprs([Iset,Var#c_var{anno=#a{us=[Name]}}], As, St);
+ Isimple = #isimple{anno=#a{us=[Name]},term=Var},
+ cexprs([Iset,Isimple], As, St);
cexprs([Le], As, St0) ->
{Ce,Es,Us,St1} = cexpr(Le, As, St0),
Exp = make_vars(As), %The export variables
@@ -2019,15 +2329,25 @@ cexpr(#itry{anno=A,args=La,vars=Vs,body=Lb,evars=Evs,handler=Lh}, As, St0) ->
cexpr(#icatch{anno=A,body=Les}, _As, St0) ->
{Ces,_Us1,St1} = cexprs(Les, [], St0), %Never export!
{#c_catch{body=Ces},[],A#a.us,St1};
-cexpr(#ifun{anno=A,id=Id,vars=Args,clauses=Lcs,fc=Lfc}, _As, St0) ->
- {Ccs,St1} = cclauses(Lcs, [], St0), %NEVER export!
- {Cfc,St2} = cclause(Lfc, [], St1),
- Anno = A#a.anno,
- {#c_fun{anno=Id++Anno,vars=Args,
- body=#c_case{anno=Anno,
- arg=set_anno(core_lib:make_values(Args), Anno),
- clauses=Ccs ++ [Cfc]}},
- [],A#a.us,St2};
+cexpr(#ifun{name=unnamed}=Fun, As, St0) ->
+ cfun(Fun, As, St0);
+cexpr(#ifun{anno=#a{us=Us0}=A0,name={named,Name},fc=#iclause{pats=Ps}}=Fun0,
+ As, St0) ->
+ case is_element(Name, Us0) of
+ false ->
+ cfun(Fun0, As, St0);
+ true ->
+ A1 = A0#a{us=del_element(Name, Us0)},
+ Fun1 = Fun0#ifun{anno=A1},
+ {#c_fun{body=Body}=CFun0,[],Us1,St1} = cfun(Fun1, As, St0),
+ RecVar = #c_var{name={Name,length(Ps)}},
+ Let = #c_let{vars=[#c_var{name=Name}],arg=RecVar,body=Body},
+ CFun1 = CFun0#c_fun{body=Let},
+ Letrec = #c_letrec{anno=A0#a.anno,
+ defs=[{RecVar,CFun1}],
+ body=RecVar},
+ {Letrec,[],Us1,St1}
+ end;
cexpr(#iapply{anno=A,op=Op,args=Args}, _As, St) ->
{#c_apply{anno=A#a.anno,op=Op,args=Args},[],A#a.us,St};
cexpr(#icall{anno=A,module=Mod,name=Name,args=Args}, _As, St) ->
@@ -2047,30 +2367,19 @@ cexpr(#c_literal{}=Lit, _As, St) ->
Anno = get_anno(Lit),
Vs = Anno#a.us,
{set_anno(Lit, Anno#a.anno),[],Vs,St};
-cexpr(Lit, _As, St) ->
- true = is_simple(Lit), %Sanity check!
- Anno = get_anno(Lit),
- Vs = Anno#a.us,
- %%Vs = lit_vars(Lit),
- {set_anno(Lit, Anno#a.anno),[],Vs,St}.
-
-%% Kill the id annotations for any fun inside the expression.
-%% Necessary when duplicating code in try ... after.
-
-kill_id_anns(#ifun{clauses=Cs0}=Fun) ->
- Cs = kill_id_anns(Cs0),
- Fun#ifun{clauses=Cs,id=[]};
-kill_id_anns(#a{}=A) ->
- %% Optimization: Don't waste time searching for funs inside annotations.
- A;
-kill_id_anns([H|T]) ->
- [kill_id_anns(H)|kill_id_anns(T)];
-kill_id_anns([]) -> [];
-kill_id_anns(Tuple) when is_tuple(Tuple) ->
- L0 = tuple_to_list(Tuple),
- L = kill_id_anns(L0),
- list_to_tuple(L);
-kill_id_anns(Other) -> Other.
+cexpr(#isimple{anno=#a{us=Vs},term=Simple}, _As, St) ->
+ true = is_simple(Simple), %Sanity check!
+ {Simple,[],Vs,St}.
+
+cfun(#ifun{anno=A,id=Id,vars=Args,clauses=Lcs,fc=Lfc}, _As, St0) ->
+ {Ccs,St1} = cclauses(Lcs, [], St0), %NEVER export!
+ {Cfc,St2} = cclause(Lfc, [], St1),
+ Anno = A#a.anno,
+ {#c_fun{anno=Id++Anno,vars=Args,
+ body=#c_case{anno=Anno,
+ arg=set_anno(core_lib:make_values(Args), Anno),
+ clauses=Ccs ++ [Cfc]}},
+ [],A#a.us,St2}.
%% lit_vars(Literal) -> [Var].
@@ -2078,14 +2387,11 @@ lit_vars(Lit) -> lit_vars(Lit, []).
lit_vars(#c_cons{hd=H,tl=T}, Vs) -> lit_vars(H, lit_vars(T, Vs));
lit_vars(#c_tuple{es=Es}, Vs) -> lit_list_vars(Es, Vs);
+lit_vars(#c_map{arg=V,es=Es}, Vs) -> lit_vars(V, lit_list_vars(Es, Vs));
+lit_vars(#c_map_pair{key=K,val=V}, Vs) -> lit_vars(K, lit_vars(V, Vs));
lit_vars(#c_var{name=V}, Vs) -> add_element(V, Vs);
lit_vars(_, Vs) -> Vs. %These are atomic
-% lit_bin_vars(Segs, Vs) ->
-% foldl(fun (#c_bitstr{val=V,size=S}, Vs0) ->
-% lit_vars(V, lit_vars(S, Vs0))
-% end, Vs, Segs).
-
lit_list_vars(Ls) -> lit_list_vars(Ls, []).
lit_list_vars(Ls, Vs) ->
@@ -2099,20 +2405,26 @@ bitstr_vars(Segs, Vs) ->
lit_vars(V, lit_vars(S, Vs0))
end, Vs, Segs).
-lineno_anno(L, St) ->
- {line, Line} = erl_parse:get_attribute(L, line),
- if
- Line < 0 ->
- [-Line] ++ St#core.file ++ [compiler_generated];
- true ->
- [Line] ++ St#core.file
+record_anno(L, St) ->
+ case
+ erl_anno:record(L) andalso member(dialyzer, St#core.opts)
+ of
+ true ->
+ [record | lineno_anno(L, St)];
+ false ->
+ full_anno(L, St)
end.
-get_ianno(Ce) ->
- case get_anno(Ce) of
- #a{}=A -> A;
- A when is_list(A) -> #a{anno=A}
- end.
+full_anno(L, #core{wanted=false}=St) ->
+ [result_not_wanted|lineno_anno(L, St)];
+full_anno(L, #core{wanted=true}=St) ->
+ lineno_anno(L, St).
+
+lineno_anno(L, St) ->
+ Line = erl_anno:line(L),
+ Generated = erl_anno:generated(L),
+ CompilerGenerated = [compiler_generated || Generated],
+ [Line] ++ St#core.file ++ CompilerGenerated.
get_lineno_anno(Ce) ->
case get_anno(Ce) of
@@ -2120,15 +2432,8 @@ get_lineno_anno(Ce) ->
A when is_list(A) -> A
end.
-location(L) ->
- {location,Location} = erl_parse:get_attribute(L, location),
- Location.
-
-abs_line(L) ->
- erl_parse:set_line(L, fun(Line) -> abs(Line) end).
-
-neg_line(L) ->
- erl_parse:set_line(L, fun(Line) -> -abs(Line) end).
+no_compiler_warning(Anno) ->
+ erl_anno:set_generated(true, Anno).
%%
%% The following three functions are used both with cerl:cerl() and with i()'s
@@ -2148,6 +2453,9 @@ is_simple(#c_literal{}) -> true;
is_simple(#c_cons{hd=H,tl=T}) ->
is_simple(H) andalso is_simple(T);
is_simple(#c_tuple{es=Es}) -> is_simple_list(Es);
+is_simple(#c_map{es=Es}) -> is_simple_list(Es);
+is_simple(#c_map_pair{key=K,val=V}) ->
+ is_simple(K) andalso is_simple(V);
is_simple(_) -> false.
-spec is_simple_list([cerl:cerl()]) -> boolean().
@@ -2165,8 +2473,14 @@ is_simple_list(Es) -> lists:all(fun is_simple/1, Es).
format_error(nomatch) ->
"pattern cannot possibly match";
format_error(bad_binary) ->
- "binary construction will fail because of a type mismatch".
-
-add_warning(Line, Term, #core{ws=Ws,file=[{file,File}]}=St) when Line >= 0 ->
- St#core{ws=[{File,[{location(Line),?MODULE,Term}]}|Ws]};
-add_warning(_, _, St) -> St.
+ "binary construction will fail because of a type mismatch";
+format_error(badmap) ->
+ "map construction will fail because of a type mismatch".
+
+add_warning(Anno, Term, #core{ws=Ws,file=[{file,File}]}=St) ->
+ case erl_anno:generated(Anno) of
+ false ->
+ St#core{ws=[{File,[{erl_anno:location(Anno),?MODULE,Term}]}|Ws]};
+ true ->
+ St
+ end.
diff --git a/lib/compiler/src/v3_kernel.erl b/lib/compiler/src/v3_kernel.erl
index 5f1c108f7c..b4bbc5e739 100644
--- a/lib/compiler/src/v3_kernel.erl
+++ b/lib/compiler/src/v3_kernel.erl
@@ -1,18 +1,19 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1999-2013. All Rights Reserved.
+%% Copyright Ericsson AB 1999-2016. All Rights Reserved.
%%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
%%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
%%
%% %CopyrightEnd%
%%
@@ -81,7 +82,7 @@
-export([module/2,format_error/1]).
-import(lists, [map/2,foldl/3,foldr/3,mapfoldl/3,splitwith/2,member/2,
- keymember/3,keyfind/3,partition/2]).
+ keymember/3,keyfind/3,partition/2,droplast/1,last/1]).
-import(ordsets, [add_element/2,del_element/2,union/2,union/1,subtract/2]).
-import(cerl, [c_tuple/1]).
@@ -114,9 +115,9 @@ copy_anno(Kdst, Ksrc) ->
ff, %Current function
vcount=0, %Variable counter
fcount=0, %Fun counter
- ds=[], %Defined variables
+ ds=cerl_sets:new() :: cerl_sets:set(), %Defined variables
funs=[], %Fun functions
- free=[], %Free variables
+ free=#{}, %Free variables
ws=[] :: [warning()], %Warnings.
guard_refc=0}). %> 0 means in guard
@@ -131,24 +132,27 @@ module(#c_module{anno=A,name=M,exports=Es,attrs=As,defs=Fs}, _Options) ->
{ok,#k_mdef{anno=A,name=M#c_literal.val,exports=Kes,attributes=Kas,
body=Kfs ++ St#kern.funs},lists:sort(St#kern.ws)}.
-attributes([{#c_literal{val=Name},Val}|As]) ->
+attributes([{#c_literal{val=Name},#c_literal{val=Val}}|As]) ->
case include_attribute(Name) of
false ->
attributes(As);
true ->
- [{Name,core_lib:literal_value(Val)}|attributes(As)]
+ [{Name,Val}|attributes(As)]
end;
attributes([]) -> [].
include_attribute(type) -> false;
include_attribute(spec) -> false;
+include_attribute(callback) -> false;
include_attribute(opaque) -> false;
include_attribute(export_type) -> false;
+include_attribute(record) -> false;
+include_attribute(optional_callbacks) -> false;
include_attribute(_) -> true.
function({#c_var{name={F,Arity}=FA},Body}, St0) ->
try
- St1 = St0#kern{func=FA,ff=undefined,vcount=0,fcount=0,ds=sets:new()},
+ St1 = St0#kern{func=FA,ff=undefined,vcount=0,fcount=0,ds=cerl_sets:new()},
{#ifun{anno=Ab,vars=Kvs,body=B0},[],St2} = expr(Body, new_sub(), St1),
{B1,_,St3} = ubody(B0, return, St2),
%%B1 = B0, St3 = St2, %Null second pass
@@ -160,8 +164,8 @@ function({#c_var{name={F,Arity}=FA},Body}, St0) ->
io:fwrite("Function: ~w/~w\n", [F,Arity]),
erlang:raise(Class, Error, Stack)
end.
-
-
+
+
%% body(Cexpr, Sub, State) -> {Kexpr,[PreKepxr],State}.
%% Do the main sequence of a body. A body ends in an atomic value or
%% values. Must check if vector first so do expr.
@@ -238,7 +242,7 @@ gexpr_test_add(Ke, St0) ->
expr(#c_var{anno=A,name={_Name,Arity}}=Fname, Sub, St) ->
%% A local in an expression.
%% For now, these are wrapped into a fun by reverse
- %% etha-conversion, but really, there should be exactly one
+ %% eta-conversion, but really, there should be exactly one
%% such "lambda function" for each escaping local name,
%% instead of one for each occurrence as done now.
Vs = [#c_var{name=list_to_atom("V" ++ integer_to_list(V))} ||
@@ -272,6 +276,8 @@ expr(#c_cons{anno=A,hd=Ch,tl=Ct}, Sub, St0) ->
expr(#c_tuple{anno=A,es=Ces}, Sub, St0) ->
{Kes,Ep,St1} = atomic_list(Ces, Sub, St0),
{#k_tuple{anno=A,es=Kes},Ep,St1};
+expr(#c_map{anno=A,arg=Var,es=Ces}, Sub, St0) ->
+ expr_map(A, Var, Ces, Sub, St0);
expr(#c_binary{anno=A,segments=Cv}, Sub, St0) ->
try atomic_bin(Cv, Sub, St0) of
{Kv,Ep,St1} ->
@@ -347,7 +353,7 @@ expr(#c_case{arg=Ca,clauses=Ccs}, Sub, St0) ->
{Kvs,Pv,St2} = match_vars(Ka, St1), %Must have variables here!
{Km,St3} = kmatch(Kvs, Ccs, Sub, St2),
Match = flatten_seq(build_match(Kvs, Km)),
- {last(Match),Pa ++ Pv ++ first(Match),St3};
+ {last(Match),Pa ++ Pv ++ droplast(Match),St3};
expr(#c_receive{anno=A,clauses=Ccs0,timeout=Ce,action=Ca}, Sub, St0) ->
{Ke,Pe,St1} = atomic(Ce, Sub, St0), %Force this to be atomic!
{Rvar,St2} = new_var(St1),
@@ -396,7 +402,7 @@ expr(#c_call{anno=A,module=M0,name=F0,args=Cargs}, Sub, St0) ->
Call = #c_call{anno=A,
module=#c_literal{val=erlang},
name=#c_literal{val=apply},
- args=[M0,F0,make_list(Cargs)]},
+ args=[M0,F0,cerl:make_list(Cargs)]},
expr(Call, Sub, St1);
_ ->
{[M1,F1|Kargs],Ap,St} = atomic_list([M0,F0|Cargs], Sub, St1),
@@ -491,7 +497,91 @@ translate_match_fail_1(Anno, As, Sub, #kern{ff=FF}) ->
end.
translate_fc(Args) ->
- [#c_literal{val=function_clause},make_list(Args)].
+ [#c_literal{val=function_clause},cerl:make_list(Args)].
+
+expr_map(A,Var0,Ces,Sub,St0) ->
+ {Var,Mps,St1} = expr(Var0, Sub, St0),
+ {Km,Eps,St2} = map_split_pairs(A, Var, Ces, Sub, St1),
+ {Km,Eps++Mps,St2}.
+
+map_split_pairs(A, Var, Ces, Sub, St0) ->
+ %% 1. Force variables.
+ %% 2. Group adjacent pairs with literal keys.
+ %% 3. Within each such group, remove multiple assignments to the same key.
+ %% 4. Partition each group according to operator ('=>' and ':=').
+ Pairs0 = [{Op,K,V} ||
+ #c_map_pair{op=#c_literal{val=Op},key=K,val=V} <- Ces],
+ {Pairs,Esp,St1} = foldr(fun
+ ({Op,K0,V0}, {Ops,Espi,Sti0}) when Op =:= assoc; Op =:= exact ->
+ {K,Eps1,Sti1} = atomic(K0, Sub, Sti0),
+ {V,Eps2,Sti2} = atomic(V0, Sub, Sti1),
+ {[{Op,K,V}|Ops],Eps1 ++ Eps2 ++ Espi,Sti2}
+ end, {[],[],St0}, Pairs0),
+ map_split_pairs_1(A, Var, Pairs, Esp, St1).
+
+map_split_pairs_1(A, Map0, [{Op,Key,Val}|Pairs1]=Pairs0, Esp0, St0) ->
+ {Map1,Em,St1} = force_atomic(Map0, St0),
+ case Key of
+ #k_var{} ->
+ %% Don't combine variable keys with other keys.
+ Kes = [#k_map_pair{key=Key,val=Val}],
+ Map = #k_map{anno=A,op=Op,var=Map1,es=Kes},
+ map_split_pairs_1(A, Map, Pairs1, Esp0 ++ Em, St1);
+ _ ->
+ %% Literal key. Split off all literal keys.
+ {L,Pairs} = splitwith(fun({_,#k_var{},_}) -> false;
+ ({_,_,_}) -> true
+ end, Pairs0),
+ {Map,Esp,St2} = map_group_pairs(A, Map1, L, Esp0 ++ Em, St1),
+ map_split_pairs_1(A, Map, Pairs, Esp, St2)
+ end;
+map_split_pairs_1(_, Map, [], Esp, St0) ->
+ {Map,Esp,St0}.
+
+map_group_pairs(A, Var, Pairs0, Esp, St0) ->
+ Pairs = map_remove_dup_keys(Pairs0),
+ Assoc = [#k_map_pair{key=K,val=V} || {_,{assoc,K,V}} <- Pairs],
+ Exact = [#k_map_pair{key=K,val=V} || {_,{exact,K,V}} <- Pairs],
+ case {Assoc,Exact} of
+ {[_|_],[]} ->
+ {#k_map{anno=A,op=assoc,var=Var,es=Assoc},Esp,St0};
+ {[],[_|_]} ->
+ {#k_map{anno=A,op=exact,var=Var,es=Exact},Esp,St0};
+ {[_|_],[_|_]} ->
+ Map = #k_map{anno=A,op=assoc,var=Var,es=Assoc},
+ {Mvar,Em,St1} = force_atomic(Map, St0),
+ {#k_map{anno=A,op=exact,var=Mvar,es=Exact},Esp ++ Em,St1}
+ end.
+
+map_remove_dup_keys(Es) ->
+ dict:to_list(map_remove_dup_keys(Es, dict:new())).
+
+map_remove_dup_keys([{assoc,K0,V}|Es0],Used0) ->
+ K = map_key_clean(K0),
+ Op = case dict:find(K, Used0) of
+ {ok,{exact,_,_}} -> exact;
+ _ -> assoc
+ end,
+ Used1 = dict:store(K, {Op,K0,V}, Used0),
+ map_remove_dup_keys(Es0, Used1);
+map_remove_dup_keys([{exact,K0,V}|Es0],Used0) ->
+ K = map_key_clean(K0),
+ Op = case dict:find(K, Used0) of
+ {ok,{assoc,_,_}} -> assoc;
+ _ -> exact
+ end,
+ Used1 = dict:store(K, {Op,K0,V}, Used0),
+ map_remove_dup_keys(Es0, Used1);
+map_remove_dup_keys([], Used) -> Used.
+
+%% Be explicit instead of using set_kanno(K, []).
+map_key_clean(#k_var{name=V}) -> {var,V};
+map_key_clean(#k_literal{val=V}) -> {lit,V};
+map_key_clean(#k_int{val=V}) -> {lit,V};
+map_key_clean(#k_float{val=V}) -> {lit,V};
+map_key_clean(#k_atom{val=V}) -> {lit,V};
+map_key_clean(#k_nil{}) -> {lit,[]}.
+
%% call_type(Module, Function, Arity) -> call | bif | apply | error.
%% Classify the call.
@@ -569,12 +659,12 @@ atomic_bin([#c_bitstr{anno=A,val=E0,size=S0,unit=U0,type=T,flags=Fs0}|Es0],
{E,Ap1,St1} = atomic(E0, Sub, St0),
{S1,Ap2,St2} = atomic(S0, Sub, St1),
validate_bin_element_size(S1),
- U1 = core_lib:literal_value(U0),
- Fs1 = core_lib:literal_value(Fs0),
+ U1 = cerl:concrete(U0),
+ Fs1 = cerl:concrete(Fs0),
{Es,Ap3,St3} = atomic_bin(Es0, Sub, St2),
{#k_bin_seg{anno=A,size=S1,
unit=U1,
- type=core_lib:literal_value(T),
+ type=cerl:concrete(T),
flags=Fs1,
seg=E,next=Es},
Ap1++Ap2++Ap3,St3};
@@ -629,15 +719,15 @@ force_variable(Ke, St0) ->
%% handling.
pattern(#c_var{anno=A,name=V}, _Isub, Osub, St0) ->
- case sets:is_element(V, St0#kern.ds) of
+ case cerl_sets:is_element(V, St0#kern.ds) of
true ->
{New,St1} = new_var_name(St0),
{#k_var{anno=A,name=New},
set_vsub(V, New, Osub),
- St1#kern{ds=sets:add_element(New, St1#kern.ds)}};
+ St1#kern{ds=cerl_sets:add_element(New, St1#kern.ds)}};
false ->
{#k_var{anno=A,name=V},Osub,
- St0#kern{ds=sets:add_element(V, St0#kern.ds)}}
+ St0#kern{ds=cerl_sets:add_element(V, St0#kern.ds)}}
end;
pattern(#c_literal{anno=A,val=Val}, _Isub, Osub, St) ->
{#k_literal{anno=A,val=Val},Osub,St};
@@ -648,6 +738,9 @@ pattern(#c_cons{anno=A,hd=Ch,tl=Ct}, Isub, Osub0, St0) ->
pattern(#c_tuple{anno=A,es=Ces}, Isub, Osub0, St0) ->
{Kes,Osub1,St1} = pattern_list(Ces, Isub, Osub0, St0),
{#k_tuple{anno=A,es=Kes},Osub1,St1};
+pattern(#c_map{anno=A,es=Ces}, Isub, Osub0, St0) ->
+ {Kes,Osub1,St1} = pattern_map_pairs(Ces, Isub, Osub0, St0),
+ {#k_map{anno=A,op=exact,es=Kes},Osub1,St1};
pattern(#c_binary{anno=A,segments=Cv}, Isub, Osub0, St0) ->
{Kv,Osub1,St1} = pattern_bin(Cv, Isub, Osub0, St0),
{#k_binary{anno=A,segs=Kv},Osub1,St1};
@@ -662,6 +755,24 @@ flatten_alias(#c_alias{var=V,pat=P}) ->
{[V|Vs],Pat};
flatten_alias(Pat) -> {[],Pat}.
+pattern_map_pairs(Ces0, Isub, Osub0, St0) ->
+ %% pattern the pair keys and values as normal
+ {Kes,{Osub1,St1}} = lists:mapfoldl(fun
+ (#c_map_pair{anno=A,key=Ck,val=Cv},{Osubi0,Sti0}) ->
+ {Kk,[],Sti1} = expr(Ck, Isub, Sti0),
+ {Kv,Osubi2,Sti2} = pattern(Cv, Isub, Osubi0, Sti1),
+ {#k_map_pair{anno=A,key=Kk,val=Kv},{Osubi2,Sti2}}
+ end, {Osub0, St0}, Ces0),
+ %% It is later assumed that these keys are term sorted
+ %% so we need to sort them here
+ Kes1 = lists:sort(fun
+ (#k_map_pair{key=KkA},#k_map_pair{key=KkB}) ->
+ A = map_key_clean(KkA),
+ B = map_key_clean(KkB),
+ erts_internal:cmp_term(A,B) < 0
+ end, Kes),
+ {Kes1,Osub1,St1}.
+
pattern_bin(Es, Isub, Osub0, St0) ->
{Kbin,{_,Osub},St} = pattern_bin_1(Es, Isub, Osub0, St0),
{Kbin,Osub,St}.
@@ -680,8 +791,8 @@ pattern_bin_1([#c_bitstr{anno=A,val=E0,size=S0,unit=U,type=T,flags=Fs}|Es0],
%% problems.
#k_atom{val=bad_size}
end,
- U0 = core_lib:literal_value(U),
- Fs0 = core_lib:literal_value(Fs),
+ U0 = cerl:concrete(U),
+ Fs0 = cerl:concrete(Fs),
%%ok= io:fwrite("~w: ~p~n", [?LINE,{B0,S,U0,Fs0}]),
{E,Osub1,St2} = pattern(E0, Isub0, Osub0, St1),
Isub1 = case E0 of
@@ -692,7 +803,7 @@ pattern_bin_1([#c_bitstr{anno=A,val=E0,size=S0,unit=U,type=T,flags=Fs}|Es0],
{Es,{Isub,Osub},St3} = pattern_bin_1(Es0, Isub1, Osub1, St2),
{#k_bin_seg{anno=A,size=S,
unit=U0,
- type=core_lib:literal_value(T),
+ type=cerl:concrete(T),
flags=Fs0,
seg=E,next=Es},
{Isub,Osub},St3};
@@ -729,12 +840,23 @@ get_vsub(V, Vsub) ->
set_vsub(V, S, Vsub) ->
orddict:store(V, S, Vsub).
-subst_vsub(V, S, Vsub0) ->
- %% Fold chained substitutions.
- Vsub1 = orddict:map(fun (_, V1) when V1 =:= V -> S;
- (_, V1) -> V1
- end, Vsub0),
- orddict:store(V, S, Vsub1).
+subst_vsub(Key, New, [{K,Key}|Dict]) ->
+ %% Fold chained substitution.
+ [{K,New}|subst_vsub(Key, New, Dict)];
+subst_vsub(Key, New, [{K,_}|_]=Dict) when Key < K ->
+ %% Insert the new substitution here, and continue
+ %% look for chained substitutions.
+ [{Key,New}|subst_vsub_1(Key, New, Dict)];
+subst_vsub(Key, New, [{K,_}=E|Dict]) when Key > K ->
+ [E|subst_vsub(Key, New, Dict)];
+subst_vsub(Key, New, []) -> [{Key,New}].
+
+subst_vsub_1(V, S, [{K,V}|Dict]) ->
+ %% Fold chained substitution.
+ [{K,S}|subst_vsub_1(V, S, Dict)];
+subst_vsub_1(V, S, [E|Dict]) ->
+ [E|subst_vsub_1(V, S, Dict)];
+subst_vsub_1(_, _, []) -> [].
get_fsub(F, A, Fsub) ->
case orddict:find({F,A}, Fsub) of
@@ -779,7 +901,7 @@ new_vars(0, St, Vs) -> {Vs,St}.
make_vars(Vs) -> [ #k_var{name=V} || V <- Vs ].
add_var_def(V, St) ->
- St#kern{ds=sets:add_element(V#k_var.name, St#kern.ds)}.
+ St#kern{ds=cerl_sets:add_element(V#k_var.name, St#kern.ds)}.
%%add_vars_def(Vs, St) ->
%% Ds = foldl(fun (#k_var{name=V}, Ds) -> add_element(V, Ds) end,
@@ -826,15 +948,6 @@ foldr2(Fun, Acc0, [E1|L1], [E2|L2]) ->
foldr2(Fun, Acc1, L1, L2);
foldr2(_, Acc, [], []) -> Acc.
-%% first([A]) -> [A].
-%% last([A]) -> A.
-
-last([L]) -> L;
-last([_|T]) -> last(T).
-
-first([_]) -> [];
-first([H|T]) -> [H|first(T)].
-
%% This code implements the algorithm for an optimizing compiler for
%% pattern matching given "The Implementation of Functional
%% Programming Languages" by Simon Peyton Jones. The code is much
@@ -1015,7 +1128,8 @@ match_con_1([U|_Us] = L, Cs, Def, St0) ->
%% Extract clauses for different constructors (types).
%%ok = io:format("match_con ~p~n", [Cs]),
Ttcs = select_types([k_binary], Cs) ++ select_bin_con(Cs) ++
- select_types([k_cons,k_tuple,k_atom,k_float,k_int,k_nil,k_literal], Cs),
+ select_types([k_cons,k_tuple,k_map,k_atom,k_float,k_int,
+ k_nil,k_literal], Cs),
%%ok = io:format("ttcs = ~p~n", [Ttcs]),
{Scs,St1} =
mapfoldl(fun ({T,Tcs}, St) ->
@@ -1251,10 +1365,9 @@ group_value(k_cons, Cs) -> [Cs]; %These are single valued
group_value(k_nil, Cs) -> [Cs];
group_value(k_binary, Cs) -> [Cs];
group_value(k_bin_end, Cs) -> [Cs];
-group_value(k_bin_seg, Cs) ->
- group_bin_seg(Cs);
-group_value(k_bin_int, Cs) ->
- [Cs];
+group_value(k_bin_seg, Cs) -> group_bin_seg(Cs);
+group_value(k_bin_int, Cs) -> [Cs];
+group_value(k_map, Cs) -> group_map(Cs);
group_value(_, Cs) ->
%% group_value(Cs).
Cd = foldl(fun (C, Gcs0) -> dict:append(clause_val(C), C, Gcs0) end,
@@ -1267,6 +1380,12 @@ group_bin_seg([C1|Cs]) ->
[[C1|More]|group_bin_seg(Rest)];
group_bin_seg([]) -> [].
+group_map([C1|Cs]) ->
+ V1 = clause_val(C1),
+ {More,Rest} = splitwith(fun (C) -> clause_val(C) =:= V1 end, Cs),
+ [[C1|More]|group_map(Rest)];
+group_map([]) -> [].
+
%% Profiling shows that this quadratic implementation account for a big amount
%% of the execution time if there are many values.
% group_value([C|Cs]) ->
@@ -1315,6 +1434,13 @@ get_match(#k_bin_int{}=BinInt, St0) ->
get_match(#k_tuple{es=Es}, St0) ->
{Mes,St1} = new_vars(length(Es), St0),
{#k_tuple{es=Mes},Mes,St1};
+get_match(#k_map{op=exact,es=Es0}, St0) ->
+ {Mes,St1} = new_vars(length(Es0), St0),
+ {Es,_} = mapfoldl(fun
+ (#k_map_pair{}=Pair, [V|Vs]) ->
+ {Pair#k_map_pair{val=V},Vs}
+ end, Mes, Es0),
+ {#k_map{op=exact,es=Es},Mes,St1};
get_match(M, St) ->
{M,[],St}.
@@ -1331,7 +1457,11 @@ new_clauses(Cs0, U, St) ->
[S,N|As];
#k_bin_int{next=N} ->
[N|As];
- _Other -> As
+ #k_map{op=exact,es=Es} ->
+ Vals = [V || #k_map_pair{val=V} <- Es],
+ Vals ++ As;
+ _Other ->
+ As
end,
Vs = arg_alias(Arg),
Osub1 = foldl(fun (#k_var{name=V}, Acc) ->
@@ -1406,6 +1536,7 @@ arg_con(Arg) ->
#k_nil{} -> k_nil;
#k_cons{} -> k_cons;
#k_tuple{} -> k_tuple;
+ #k_map{} -> k_map;
#k_binary{} -> k_binary;
#k_bin_end{} -> k_bin_end;
#k_bin_seg{} -> k_bin_seg;
@@ -1426,9 +1557,15 @@ arg_val(Arg, C) ->
{#k_var{name=get_vsub(V, Isub)},U,T,Fs};
_ ->
{set_kanno(S, []),U,T,Fs}
- end
+ end;
+ #k_map{op=exact,es=Es} ->
+ lists:sort(fun(A,B) ->
+ %% on the form K :: {'lit' | 'var', term()}
+ %% lit < var as intended
+ erts_internal:cmp_term(A,B) < 0
+ end, [map_key_clean(Key) || #k_map_pair{key=Key} <- Es])
end.
-
+
%% ubody_used_vars(Expr, State) -> [UsedVar]
%% Return all used variables for the body sequence. Much more
%% efficient than using ubody/3 if the body contains nested letrecs.
@@ -1703,14 +1840,17 @@ handle_reuse_anno_1(V, _St) -> V.
%% get_free(Name, Arity, State) -> [Free].
%% store_free(Name, Arity, [Free], State) -> State.
-get_free(F, A, St) ->
- case orddict:find({F,A}, St#kern.free) of
- {ok,Val} -> Val;
- error -> []
+get_free(F, A, #kern{free=FreeMap}) ->
+ Key = {F,A},
+ case FreeMap of
+ #{Key:=Val} -> Val;
+ _ -> []
end.
-store_free(F, A, Free, St) ->
- St#kern{free=orddict:store({F,A}, Free, St#kern.free)}.
+store_free(F, A, Free, #kern{free=FreeMap0}=St) ->
+ Key = {F,A},
+ FreeMap = FreeMap0#{Key=>Free},
+ St#kern{free=FreeMap}.
break_rets({break,Rs}) -> Rs;
break_rets(return) -> [].
@@ -1795,6 +1935,10 @@ lit_vars(#k_atom{}) -> [];
lit_vars(#k_nil{}) -> [];
lit_vars(#k_cons{hd=H,tl=T}) ->
union(lit_vars(H), lit_vars(T));
+lit_vars(#k_map{var=Var,es=Es}) ->
+ lit_list_vars([Var|Es]);
+lit_vars(#k_map_pair{key=K,val=V}) ->
+ union(lit_vars(K), lit_vars(V));
lit_vars(#k_binary{segs=V}) -> lit_vars(V);
lit_vars(#k_bin_end{}) -> [];
lit_vars(#k_bin_seg{size=Size,seg=S,next=N}) ->
@@ -1809,6 +1953,7 @@ lit_list_vars(Ps) ->
%% pat_vars(Pattern) -> {[UsedVarName],[NewVarName]}.
%% Return variables in a pattern. All variables are new variables
%% except those in the size field of binary segments.
+%% and map_pair keys
pat_vars(#k_var{name=N}) -> {[],[N]};
%%pat_vars(#k_char{}) -> {[],[]};
@@ -1830,7 +1975,13 @@ pat_vars(#k_bin_int{size=Size}) ->
{U,[]};
pat_vars(#k_bin_end{}) -> {[],[]};
pat_vars(#k_tuple{es=Es}) ->
- pat_list_vars(Es).
+ pat_list_vars(Es);
+pat_vars(#k_map{es=Es}) ->
+ pat_list_vars(Es);
+pat_vars(#k_map_pair{key=K,val=V}) ->
+ {U1,New} = pat_vars(V),
+ {[], U2} = pat_vars(K),
+ {union(U1,U2),New}.
pat_list_vars(Ps) ->
foldl(fun (P, {Used0,New0}) ->
@@ -1838,11 +1989,6 @@ pat_list_vars(Ps) ->
{union(Used0, Used),union(New0, New)} end,
{[],[]}, Ps).
-make_list(Es) ->
- foldr(fun(E, Acc) ->
- #c_cons{hd=E,tl=Acc}
- end, #c_literal{val=[]}, Es).
-
%% List of integers in interval [N,M]. Empty list if N > M.
integers(N, M) when N =< M ->
@@ -1875,7 +2021,7 @@ format_error(bad_segment_size) ->
add_warning(none, Term, Anno, #kern{ws=Ws}=St) ->
File = get_file(Anno),
- St#kern{ws=[{File,[{?MODULE,Term}]}|Ws]};
+ St#kern{ws=[{File,[{none,?MODULE,Term}]}|Ws]};
add_warning(Line, Term, Anno, #kern{ws=Ws}=St) ->
File = get_file(Anno),
St#kern{ws=[{File,[{Line,?MODULE,Term}]}|Ws]}.
diff --git a/lib/compiler/src/v3_kernel.hrl b/lib/compiler/src/v3_kernel.hrl
index fb8baf398b..5216a1a620 100644
--- a/lib/compiler/src/v3_kernel.hrl
+++ b/lib/compiler/src/v3_kernel.hrl
@@ -1,18 +1,19 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1999-2012. All Rights Reserved.
+%% Copyright Ericsson AB 1999-2016. All Rights Reserved.
%%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
%%
%% %CopyrightEnd%
%%
@@ -38,6 +39,8 @@
-record(k_nil, {anno=[]}).
-record(k_tuple, {anno=[],es}).
+-record(k_map, {anno=[],var=#k_literal{val=#{}},op,es}).
+-record(k_map_pair, {anno=[],key,val}).
-record(k_cons, {anno=[],hd,tl}).
-record(k_binary, {anno=[],segs}).
-record(k_bin_seg, {anno=[],size,unit,type,flags,seg,next}).
diff --git a/lib/compiler/src/v3_kernel_pp.erl b/lib/compiler/src/v3_kernel_pp.erl
index e363a5387a..0b90f0a1e0 100644
--- a/lib/compiler/src/v3_kernel_pp.erl
+++ b/lib/compiler/src/v3_kernel_pp.erl
@@ -1,18 +1,19 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1999-2011. All Rights Reserved.
+%% Copyright Ericsson AB 1999-2016. All Rights Reserved.
%%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
%%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
%%
%% %CopyrightEnd%
%%
@@ -104,6 +105,30 @@ format_1(#k_tuple{es=Es}, Ctxt) ->
format_hseq(Es, ",", ctxt_bump_indent(Ctxt, 1), fun format/2),
$}
];
+format_1(#k_map{var=#k_literal{val=M},op=assoc,es=Es}, Ctxt) when is_map(M), map_size(M) =:= 0 ->
+ ["~{",
+ format_hseq(Es, ",", ctxt_bump_indent(Ctxt, 1), fun format/2),
+ "}~"
+ ];
+format_1(#k_map{var=#k_literal{val=M},op=exact,es=Es}, Ctxt) when is_map(M), map_size(M) =:= 0 ->
+ ["::{",
+ format_hseq(Es, ",", ctxt_bump_indent(Ctxt, 1), fun format/2),
+ "}::"
+ ];
+format_1(#k_map{var=Var,op=assoc,es=Es}, Ctxt) ->
+ ["~{",
+ format_hseq(Es, ",", ctxt_bump_indent(Ctxt, 1), fun format/2),
+ " | ",format_1(Var, Ctxt),
+ "}~"
+ ];
+format_1(#k_map{var=Var,op=exact,es=Es}, Ctxt) ->
+ ["::{",
+ format_hseq(Es, ",", ctxt_bump_indent(Ctxt, 1), fun format/2),
+ " | ",format_1(Var, Ctxt),
+ "}::"
+ ];
+format_1(#k_map_pair{key=K,val=V}, Ctxt) ->
+ ["<",format(K, Ctxt),",",format(V, Ctxt),">"];
format_1(#k_binary{segs=S}, Ctxt) ->
["#<",format(S, ctxt_bump_indent(Ctxt, 2)),">#"];
format_1(#k_bin_seg{next=Next}=S, Ctxt) ->
diff --git a/lib/compiler/src/v3_life.erl b/lib/compiler/src/v3_life.erl
index 2cc3493570..1452b78d1d 100644
--- a/lib/compiler/src/v3_life.erl
+++ b/lib/compiler/src/v3_life.erl
@@ -1,18 +1,19 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1999-2012. All Rights Reserved.
+%% Copyright Ericsson AB 1999-2016. All Rights Reserved.
%%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
%%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
%%
%% %CopyrightEnd%
%%
@@ -45,7 +46,7 @@
-export([vdb_find/2]).
--import(lists, [member/2,map/2,foldl/3,reverse/1,sort/1]).
+-import(lists, [member/2,map/2,reverse/1,sort/1]).
-import(ordsets, [add_element/2,intersection/2,union/2]).
-include("v3_kernel.hrl").
@@ -68,7 +69,7 @@ functions([], Acc) -> reverse(Acc).
function(#k_fdef{anno=#k{a=Anno},func=F,arity=Ar,vars=Vs,body=Kb}) ->
try
As = var_list(Vs),
- Vdb0 = foldl(fun ({var,N}, Vdb) -> new_var(N, 0, Vdb) end, [], As),
+ Vdb0 = init_vars(As),
%% Force a top-level match!
B0 = case Kb of
#k_match{} -> Kb;
@@ -94,14 +95,14 @@ function(#k_fdef{anno=#k{a=Anno},func=F,arity=Ar,vars=Vs,body=Kb}) ->
body(#k_seq{arg=Ke,body=Kb}, I, Vdb0) ->
%%ok = io:fwrite("life ~w:~p~n", [?LINE,{Ke,I,Vdb0}]),
A = get_kanno(Ke),
- Vdb1 = use_vars(A#k.us, I, new_vars(A#k.ns, I, Vdb0)),
+ Vdb1 = use_vars(union(A#k.us, A#k.ns), I, Vdb0),
{Es,MaxI,Vdb2} = body(Kb, I+1, Vdb1),
E = expr(Ke, I, Vdb2),
{[E|Es],MaxI,Vdb2};
body(Ke, I, Vdb0) ->
%%ok = io:fwrite("life ~w:~p~n", [?LINE,{Ke,I,Vdb0}]),
A = get_kanno(Ke),
- Vdb1 = use_vars(A#k.us, I, new_vars(A#k.ns, I, Vdb0)),
+ Vdb1 = use_vars(union(A#k.us, A#k.ns), I, Vdb0),
E = expr(Ke, I, Vdb1),
{[E],I,Vdb1}.
@@ -150,12 +151,12 @@ expr(#k_try_enter{anno=A,arg=Ka,vars=Vs,body=Kb,evars=Evs,handler=Kh}, I, Vdb) -
%% the body and handler. Add try tag 'variable'.
Ab = get_kanno(Kb),
Ah = get_kanno(Kh),
- Tdb1 = use_vars(Ab#k.us, I+3, use_vars(Ah#k.us, I+3, Tdb0)),
+ Tdb1 = use_vars(union(Ab#k.us, Ah#k.us), I+3, Tdb0),
Tdb2 = vdb_sub(I, I+2, Tdb1),
Vnames = fun (Kvar) -> Kvar#k_var.name end, %Get the variable names
{Aes,_,Adb} = body(Ka, I+2, add_var({catch_tag,I+1}, I+1, 1000000, Tdb2)),
- {Bes,_,Bdb} = body(Kb, I+4, new_vars(map(Vnames, Vs), I+3, Tdb2)),
- {Hes,_,Hdb} = body(Kh, I+4, new_vars(map(Vnames, Evs), I+3, Tdb2)),
+ {Bes,_,Bdb} = body(Kb, I+4, new_vars(sort(map(Vnames, Vs)), I+3, Tdb2)),
+ {Hes,_,Hdb} = body(Kh, I+4, new_vars(sort(map(Vnames, Evs)), I+3, Tdb2)),
#l{ke={try_enter,#l{ke={block,Aes},i=I+1,vdb=Adb,a=[]},
var_list(Vs),#l{ke={block,Bes},i=I+3,vdb=Bdb,a=[]},
var_list(Evs),#l{ke={block,Hes},i=I+3,vdb=Hdb,a=[]}},
@@ -171,7 +172,7 @@ expr(#k_receive{anno=A,var=V,body=Kb,timeout=T,action=Ka,ret=Rs}, I, Vdb) ->
%% Work out imported variables which need to be locked.
Rdb = vdb_sub(I, I+1, Vdb),
M = match(Kb, add_element(V#k_var.name, A#k.us), I+1, [],
- new_var(V#k_var.name, I, Rdb)),
+ new_vars([V#k_var.name], I, Rdb)),
{Tes,_,Adb} = body(Ka, I+1, Rdb),
#l{ke={receive_loop,atomic(T),variable(V),M,
#l{ke=Tes,i=I+1,vdb=Adb,a=[]},var_list(Rs)},
@@ -199,12 +200,12 @@ body_try(#k_try{anno=A,arg=Ka,vars=Vs,body=Kb,evars=Evs,handler=Kh,ret=Rs},
%% the body and handler. Add try tag 'variable'.
Ab = get_kanno(Kb),
Ah = get_kanno(Kh),
- Tdb1 = use_vars(Ab#k.us, I+3, use_vars(Ah#k.us, I+3, Tdb0)),
+ Tdb1 = use_vars(union(Ab#k.us, Ah#k.us), I+3, Tdb0),
Tdb2 = vdb_sub(I, I+2, Tdb1),
Vnames = fun (Kvar) -> Kvar#k_var.name end, %Get the variable names
{Aes,_,Adb} = body(Ka, I+2, add_var({catch_tag,I+1}, I+1, locked, Tdb2)),
- {Bes,_,Bdb} = body(Kb, I+4, new_vars(map(Vnames, Vs), I+3, Tdb2)),
- {Hes,_,Hdb} = body(Kh, I+4, new_vars(map(Vnames, Evs), I+3, Tdb2)),
+ {Bes,_,Bdb} = body(Kb, I+4, new_vars(sort(map(Vnames, Vs)), I+3, Tdb2)),
+ {Hes,_,Hdb} = body(Kh, I+4, new_vars(sort(map(Vnames, Evs)), I+3, Tdb2)),
#l{ke={'try',#l{ke={block,Aes},i=I+1,vdb=Adb,a=[]},
var_list(Vs),#l{ke={block,Bes},i=I+3,vdb=Bdb,a=[]},
var_list(Evs),#l{ke={block,Hes},i=I+3,vdb=Hdb,a=[]},
@@ -270,7 +271,7 @@ match(#k_select{anno=A,var=V,types=Kts}, Ls0, I, Ctxt, Vdb0) ->
end,
Vdb1 = use_vars(union(A#k.us, Ls1), I, Vdb0),
Ts = [type_clause(Tc, Ls1, I+1, Ctxt, Vdb1) || Tc <- Kts],
- #l{ke={select,literal2(V, Ctxt),Ts},i=I,vdb=Vdb1,a=Anno};
+ #l{ke={select,literal(V, Ctxt),Ts},i=I,vdb=Vdb1,a=Anno};
match(#k_guard{anno=A,clauses=Kcs}, Ls, I, Ctxt, Vdb0) ->
Vdb1 = use_vars(union(A#k.us, Ls), I, Vdb0),
Cs = [guard_clause(G, Ls, I+1, Ctxt, Vdb1) || G <- Kcs],
@@ -297,7 +298,7 @@ val_clause(#k_val_clause{anno=A,val=V,body=Kb}, Ls0, I, Ctxt0, Vdb0) ->
_ -> Ctxt0
end,
B = match(Kb, Ls1, I+1, Ctxt, Vdb1),
- #l{ke={val_clause,literal2(V, Ctxt),B},i=I,vdb=use_vars(Bus, I+1, Vdb1),a=A#k.a}.
+ #l{ke={val_clause,literal(V, Ctxt),B},i=I,vdb=use_vars(Bus, I+1, Vdb1),a=A#k.a}.
guard_clause(#k_guard_clause{anno=A,guard=Kg,body=Kb}, Ls, I, Ctxt, Vdb0) ->
Vdb1 = use_vars(union(A#k.us, Ls), I+2, Vdb0),
@@ -323,7 +324,8 @@ type(k_tuple) -> tuple;
type(k_binary) -> binary;
type(k_bin_seg) -> bin_seg;
type(k_bin_int) -> bin_int;
-type(k_bin_end) -> bin_end.
+type(k_bin_end) -> bin_end;
+type(k_map) -> map.
%% variable(Klit) -> Lit.
%% var_list([Klit]) -> [Lit].
@@ -349,6 +351,7 @@ atomic_list(Ks) -> [atomic(K) || K <- Ks].
%% literal_list([Klit]) -> [Lit].
literal(#k_var{name=N}, _) -> {var,N};
+literal(#k_literal{val=I}, _) -> {literal,I};
literal(#k_int{val=I}, _) -> {integer,I};
literal(#k_float{val=F}, _) -> {float,F};
literal(#k_atom{val=N}, _) -> {atom,N};
@@ -357,50 +360,29 @@ literal(#k_nil{}, _) -> nil;
literal(#k_cons{hd=H,tl=T}, Ctxt) ->
{cons,[literal(H, Ctxt),literal(T, Ctxt)]};
literal(#k_binary{segs=V}, Ctxt) ->
- {binary,literal(V, Ctxt)};
+ {binary,literal(V, Ctxt)};
+literal(#k_bin_seg{size=S,unit=U,type=T,flags=Fs,seg=Seg,next=[]}, Ctxt) ->
+ %% Only occurs in patterns.
+ {bin_seg,Ctxt,literal(S, Ctxt),U,T,Fs,[literal(Seg, Ctxt)]};
literal(#k_bin_seg{size=S,unit=U,type=T,flags=Fs,seg=Seg,next=N}, Ctxt) ->
{bin_seg,Ctxt,literal(S, Ctxt),U,T,Fs,
[literal(Seg, Ctxt),literal(N, Ctxt)]};
+literal(#k_bin_int{size=S,unit=U,flags=Fs,val=Int,next=N}, Ctxt) ->
+ %% Only occurs in patterns.
+ {bin_int,Ctxt,literal(S, Ctxt),U,Fs,Int,
+ [literal(N, Ctxt)]};
literal(#k_bin_end{}, Ctxt) ->
{bin_end,Ctxt};
literal(#k_tuple{es=Es}, Ctxt) ->
{tuple,literal_list(Es, Ctxt)};
-literal(#k_literal{val=V}, _Ctxt) ->
- {literal,V}.
+literal(#k_map{op=Op,var=Var,es=Es0}, Ctxt) ->
+ {map,Op,literal(Var, Ctxt),literal_list(Es0, Ctxt)};
+literal(#k_map_pair{key=K,val=V}, Ctxt) ->
+ {map_pair,literal(K, Ctxt),literal(V, Ctxt)}.
literal_list(Ks, Ctxt) ->
[literal(K, Ctxt) || K <- Ks].
-literal2(#k_var{name=N}, _) -> {var,N};
-literal2(#k_literal{val=I}, _) -> {literal,I};
-literal2(#k_int{val=I}, _) -> {integer,I};
-literal2(#k_float{val=F}, _) -> {float,F};
-literal2(#k_atom{val=N}, _) -> {atom,N};
-%%literal2(#k_char{val=C}, _) -> {char,C};
-literal2(#k_nil{}, _) -> nil;
-literal2(#k_cons{hd=H,tl=T}, Ctxt) ->
- {cons,[literal2(H, Ctxt),literal2(T, Ctxt)]};
-literal2(#k_binary{segs=V}, Ctxt) ->
- {binary,literal2(V, Ctxt)};
-literal2(#k_bin_seg{size=S,unit=U,type=T,flags=Fs,seg=Seg,next=[]}, Ctxt) ->
- {bin_seg,Ctxt,literal2(S, Ctxt),U,T,Fs,[literal2(Seg, Ctxt)]};
-literal2(#k_bin_seg{size=S,unit=U,type=T,flags=Fs,seg=Seg,next=N}, Ctxt) ->
- {bin_seg,Ctxt,literal2(S, Ctxt),U,T,Fs,
- [literal2(Seg, Ctxt),literal2(N, Ctxt)]};
-literal2(#k_bin_int{size=S,unit=U,flags=Fs,val=Int,next=N}, Ctxt) ->
- {bin_int,Ctxt,literal2(S, Ctxt),U,Fs,Int,
- [literal2(N, Ctxt)]};
-literal2(#k_bin_end{}, Ctxt) ->
- {bin_end,Ctxt};
-literal2(#k_tuple{es=Es}, Ctxt) ->
- {tuple,literal_list2(Es, Ctxt)}.
-
-literal_list2(Ks, Ctxt) ->
- [literal2(K, Ctxt) || K <- Ks].
-
-%% literal_bin(#k_bin_seg{size=S,unit=U,type=T,flags=Fs,seg=Seg,next=N}) ->
-%% {bin_seg,literal(S),U,T,Fs,[literal(Seg),literal(N)]}
-
%% is_gc_bif(Name, Arity) -> true|false
%% Determines whether the BIF Name/Arity might do a GC.
@@ -419,79 +401,78 @@ is_gc_bif(Bif, Arity) ->
erl_internal:new_type_test(Bif, Arity) orelse
erl_internal:comp_op(Bif, Arity)).
-%% new_var(VarName, I, Vdb) -> Vdb.
+%% Keep track of life time for variables.
+%%
+%% init_vars([{var,VarName}]) -> Vdb.
%% new_vars([VarName], I, Vdb) -> Vdb.
-%% use_var(VarName, I, Vdb) -> Vdb.
%% use_vars([VarName], I, Vdb) -> Vdb.
%% add_var(VarName, F, L, Vdb) -> Vdb.
+%%
+%% The list of variable names for new_vars/3 and use_vars/3
+%% must be sorted.
-new_var(V, I, Vdb) ->
- vdb_store_new(V, I, I, Vdb).
+init_vars(Vs) ->
+ vdb_new(Vs).
-new_vars(Vs, I, Vdb0) ->
- foldl(fun (V, Vdb) -> new_var(V, I, Vdb) end, Vdb0, Vs).
+new_vars([], _, Vdb) -> Vdb;
+new_vars([V], I, Vdb) -> vdb_store_new(V, {V,I,I}, Vdb);
+new_vars(Vs, I, Vdb) -> vdb_update_vars(Vs, Vdb, I).
-use_var(V, I, Vdb) ->
+use_vars([], _, Vdb) ->
+ Vdb;
+use_vars([V], I, Vdb) ->
case vdb_find(V, Vdb) of
- {V,F,L} when I > L -> vdb_update(V, F, I, Vdb);
+ {V,F,L} when I > L -> vdb_update(V, {V,F,I}, Vdb);
{V,_,_} -> Vdb;
- error -> vdb_store_new(V, I, I, Vdb)
- end.
+ error -> vdb_store_new(V, {V,I,I}, Vdb)
+ end;
+use_vars(Vs, I, Vdb) -> vdb_update_vars(Vs, Vdb, I).
-use_vars([], _, Vdb) -> Vdb;
-use_vars([V], I, Vdb) -> use_var(V, I, Vdb);
-use_vars(Vs, I, Vdb) ->
- Res = use_vars_1(sort(Vs), Vdb, I),
- %% The following line can be used as an assertion.
- %% Res = foldl(fun (V, Vdb) -> use_var(V, I, Vdb) end, Vdb, Vs),
- Res.
+add_var(V, F, L, Vdb) ->
+ vdb_store_new(V, {V,F,L}, Vdb).
-%% Measurements show that it is worthwhile having this special
-%% function that updates/inserts several variables at once.
+%% is_in_guard() -> true|false.
-use_vars_1([V|_]=Vs, [{V1,_,_}=Vd|Vdb], I) when V > V1 ->
- [Vd|use_vars_1(Vs, Vdb, I)];
-use_vars_1([V|Vs], [{V1,_,_}|_]=Vdb, I) when V < V1 ->
- %% New variable.
- [{V,I,I}|use_vars_1(Vs, Vdb, I)];
-use_vars_1([V|Vs], [{_,F,L}=Vd|Vdb], I) ->
- %% Existing variable.
- if
- I > L ->[{V,F,I}|use_vars_1(Vs, Vdb, I)];
- true -> [Vd|use_vars_1(Vs, Vdb, I)]
- end;
-use_vars_1([V|Vs], [], I) ->
- %% New variable.
- [{V,I,I}|use_vars_1(Vs, [], I)];
-use_vars_1([], Vdb, _) -> Vdb.
+is_in_guard() ->
+ get(guard_refc) > 0.
-add_var(V, F, L, Vdb) ->
- vdb_store_new(V, F, L, Vdb).
+%% vdb
+
+vdb_new(Vs) ->
+ sort([{V,0,0} || {var,V} <- Vs]).
vdb_find(V, Vdb) ->
- %% Performance note: Profiling shows that this function accounts for
- %% a lot of the execution time when huge constant terms are built.
- %% Using the BIF lists:keyfind/3 is a lot faster than the
- %% original Erlang version.
case lists:keyfind(V, 1, Vdb) of
false -> error;
Vd -> Vd
end.
-%vdb_find(V, [{V1,F,L}=Vd|Vdb]) when V < V1 -> error;
-%vdb_find(V, [{V1,F,L}=Vd|Vdb]) when V == V1 -> Vd;
-%vdb_find(V, [{V1,F,L}=Vd|Vdb]) when V > V1 -> vdb_find(V, Vdb);
-%vdb_find(V, []) -> error.
+vdb_update(V, Update, [{V,_,_}|Vdb]) ->
+ [Update|Vdb];
+vdb_update(V, Update, [Vd|Vdb]) ->
+ [Vd|vdb_update(V, Update, Vdb)].
-vdb_update(V, F, L, [{V1,_,_}=Vd|Vdb]) when V > V1 ->
- [Vd|vdb_update(V, F, L, Vdb)];
-vdb_update(V, F, L, [{V1,_,_}|Vdb]) when V == V1 ->
- [{V,F,L}|Vdb].
+vdb_store_new(V, New, [{V1,_,_}=Vd|Vdb]) when V > V1 ->
+ [Vd|vdb_store_new(V, New, Vdb)];
+vdb_store_new(V, New, [{V1,_,_}|_]=Vdb) when V < V1 ->
+ [New|Vdb];
+vdb_store_new(_, New, []) -> [New].
-vdb_store_new(V, F, L, [{V1,_,_}=Vd|Vdb]) when V > V1 ->
- [Vd|vdb_store_new(V, F, L, Vdb)];
-vdb_store_new(V, F, L, [{V1,_,_}|_]=Vdb) when V < V1 -> [{V,F,L}|Vdb];
-vdb_store_new(V, F, L, []) -> [{V,F,L}].
+vdb_update_vars([V|_]=Vs, [{V1,_,_}=Vd|Vdb], I) when V > V1 ->
+ [Vd|vdb_update_vars(Vs, Vdb, I)];
+vdb_update_vars([V|Vs], [{V1,_,_}|_]=Vdb, I) when V < V1 ->
+ %% New variable.
+ [{V,I,I}|vdb_update_vars(Vs, Vdb, I)];
+vdb_update_vars([V|Vs], [{_,F,L}=Vd|Vdb], I) ->
+ %% Existing variable.
+ if
+ I > L -> [{V,F,I}|vdb_update_vars(Vs, Vdb, I)];
+ true -> [Vd|vdb_update_vars(Vs, Vdb, I)]
+ end;
+vdb_update_vars([V|Vs], [], I) ->
+ %% New variable.
+ [{V,I,I}|vdb_update_vars(Vs, [], I)];
+vdb_update_vars([], Vdb, _) -> Vdb.
%% vdb_sub(Min, Max, Vdb) -> Vdb.
%% Extract variables which are used before and after Min. Lock
@@ -501,8 +482,3 @@ vdb_sub(Min, Max, Vdb) ->
[ if L >= Max -> {V,F,locked};
true -> Vd
end || {V,F,L}=Vd <- Vdb, F < Min, L >= Min ].
-
-%% is_in_guard() -> true|false.
-
-is_in_guard() ->
- get(guard_refc) > 0.
diff --git a/lib/compiler/src/v3_life.hrl b/lib/compiler/src/v3_life.hrl
index 541e4cf66d..9d03a86ccd 100644
--- a/lib/compiler/src/v3_life.hrl
+++ b/lib/compiler/src/v3_life.hrl
@@ -1,18 +1,19 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1999-2009. All Rights Reserved.
+%% Copyright Ericsson AB 1999-2016. All Rights Reserved.
%%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
%%
%% %CopyrightEnd%
%%