aboutsummaryrefslogtreecommitdiffstats
path: root/lib/compiler
diff options
context:
space:
mode:
Diffstat (limited to 'lib/compiler')
-rw-r--r--lib/compiler/src/beam_block.erl3
-rw-r--r--lib/compiler/src/beam_clean.erl25
-rw-r--r--lib/compiler/src/beam_dead.erl676
-rw-r--r--lib/compiler/src/beam_flatten.erl3
-rw-r--r--lib/compiler/src/beam_jump.erl5
-rw-r--r--lib/compiler/src/beam_split.erl4
-rw-r--r--lib/compiler/src/beam_type.erl21
-rw-r--r--lib/compiler/src/beam_utils.erl20
-rw-r--r--lib/compiler/src/beam_validator.erl5
-rw-r--r--lib/compiler/src/beam_z.erl14
-rw-r--r--lib/compiler/src/cerl.erl46
-rw-r--r--lib/compiler/src/cerl_clauses.erl46
-rw-r--r--lib/compiler/src/cerl_inline.erl36
-rw-r--r--lib/compiler/src/cerl_trees.erl4
-rw-r--r--lib/compiler/src/compile.erl5
-rw-r--r--lib/compiler/src/core_lib.erl13
-rw-r--r--lib/compiler/src/core_lint.erl102
-rw-r--r--lib/compiler/src/core_parse.hrl3
-rw-r--r--lib/compiler/src/core_parse.yrl86
-rw-r--r--lib/compiler/src/core_pp.erl20
-rw-r--r--lib/compiler/src/core_scan.erl6
-rw-r--r--lib/compiler/src/erl_bifs.erl1
-rw-r--r--lib/compiler/src/sys_core_fold.erl211
-rw-r--r--lib/compiler/src/sys_pre_expand.erl53
-rw-r--r--lib/compiler/src/v3_codegen.erl73
-rw-r--r--lib/compiler/src/v3_core.erl490
-rw-r--r--lib/compiler/src/v3_kernel.erl167
-rw-r--r--lib/compiler/src/v3_kernel.hrl2
-rw-r--r--lib/compiler/test/Makefile5
-rw-r--r--lib/compiler/test/andor_SUITE.erl2
-rw-r--r--lib/compiler/test/beam_utils_SUITE.erl236
-rw-r--r--lib/compiler/test/beam_validator_SUITE.erl13
-rw-r--r--lib/compiler/test/beam_validator_SUITE_data/compiler_bug.S38
-rw-r--r--lib/compiler/test/bs_bit_binaries_SUITE.erl2
-rw-r--r--lib/compiler/test/bs_construct_SUITE.erl2
-rw-r--r--lib/compiler/test/bs_match_SUITE.erl28
-rw-r--r--lib/compiler/test/compilation_SUITE.erl8
-rw-r--r--lib/compiler/test/compile_SUITE.erl91
-rw-r--r--lib/compiler/test/compile_SUITE_data/dialyzer_test.erl39
-rw-r--r--lib/compiler/test/core_SUITE_data/map_core_test.core12
-rw-r--r--lib/compiler/test/core_fold_SUITE.erl46
-rw-r--r--lib/compiler/test/error_SUITE.erl25
-rw-r--r--lib/compiler/test/float_SUITE.erl2
-rw-r--r--lib/compiler/test/guard_SUITE.erl245
-rw-r--r--lib/compiler/test/lc_SUITE.erl91
-rw-r--r--lib/compiler/test/map_SUITE.erl386
-rw-r--r--lib/compiler/test/match_SUITE.erl19
-rw-r--r--lib/compiler/test/misc_SUITE.erl9
-rw-r--r--lib/compiler/test/receive_SUITE.erl38
-rw-r--r--lib/compiler/test/test_lib.erl21
-rw-r--r--lib/compiler/test/trycatch_SUITE.erl3
-rw-r--r--lib/compiler/test/warnings_SUITE.erl57
52 files changed, 2605 insertions, 953 deletions
diff --git a/lib/compiler/src/beam_block.erl b/lib/compiler/src/beam_block.erl
index 7a30c68593..7d65dc983a 100644
--- a/lib/compiler/src/beam_block.erl
+++ b/lib/compiler/src/beam_block.erl
@@ -155,7 +155,8 @@ collect(remove_message) -> {set,[],[],remove_message};
collect({put_map,F,Op,S,D,R,{list,Puts}}) ->
{set,[D],[S|Puts],{alloc,R,{put_map,Op,F}}};
collect({get_map_elements,F,S,{list,Gets}}) ->
- {set,Gets,[S],{get_map_elements,F}};
+ {Ss,Ds} = beam_utils:split_even(Gets),
+ {set,Ds,[S|Ss],{get_map_elements,F}};
collect({'catch',R,L}) -> {set,[R],[],{'catch',L}};
collect(fclearerror) -> {set,[],[],fclearerror};
collect({fcheckerror,{f,0}}) -> {set,[],[],fcheckerror};
diff --git a/lib/compiler/src/beam_clean.erl b/lib/compiler/src/beam_clean.erl
index b653998252..b68b8702e0 100644
--- a/lib/compiler/src/beam_clean.erl
+++ b/lib/compiler/src/beam_clean.erl
@@ -234,31 +234,6 @@ 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([{bs_init2,{f,Lbl},Sz,Words,R,F,Dst}|Is], Acc, D) when Lbl =/= 0 ->
- replace(Is, [{bs_init2,{f,label(Lbl, D)},Sz,Words,R,F,Dst}|Acc], D);
-replace([{bs_init_bits,{f,Lbl},Sz,Words,R,F,Dst}|Is], Acc, D) when Lbl =/= 0 ->
- replace(Is, [{bs_init_bits,{f,label(Lbl, D)},Sz,Words,R,F,Dst}|Acc], D);
-replace([{bs_put_integer,{f,Lbl},Bits,Unit,Fl,Val}|Is], Acc, D) when Lbl =/= 0 ->
- replace(Is, [{bs_put_integer,{f,label(Lbl, D)},Bits,Unit,Fl,Val}|Acc], D);
-replace([{bs_put_utf8=I,{f,Lbl},Fl,Val}|Is], Acc, D) when Lbl =/= 0 ->
- replace(Is, [{I,{f,label(Lbl, D)},Fl,Val}|Acc], D);
-replace([{bs_put_utf16=I,{f,Lbl},Fl,Val}|Is], Acc, D) when Lbl =/= 0 ->
- replace(Is, [{I,{f,label(Lbl, D)},Fl,Val}|Acc], D);
-replace([{bs_put_utf32=I,{f,Lbl},Fl,Val}|Is], Acc, D) when Lbl =/= 0 ->
- replace(Is, [{I,{f,label(Lbl, D)},Fl,Val}|Acc], D);
-replace([{bs_put_binary,{f,Lbl},Bits,Unit,Fl,Val}|Is], Acc, D) when Lbl =/= 0 ->
- replace(Is, [{bs_put_binary,{f,label(Lbl, D)},Bits,Unit,Fl,Val}|Acc], D);
-replace([{bs_put_float,{f,Lbl},Bits,Unit,Fl,Val}|Is], Acc, D) when Lbl =/= 0 ->
- replace(Is, [{bs_put_float,{f,label(Lbl, D)},Bits,Unit,Fl,Val}|Acc], D);
-replace([{bs_add,{f,Lbl},Src,Dst}|Is], Acc, D) when Lbl =/= 0 ->
- replace(Is, [{bs_add,{f,label(Lbl, D)},Src,Dst}|Acc], D);
-replace([{bs_append,{f,Lbl},_,_,_,_,_,_,_}=I0|Is], Acc, D) when Lbl =/= 0 ->
- I = setelement(2, I0, {f,label(Lbl, D)}),
- replace(Is, [I|Acc], D);
-replace([{bs_utf8_size=I,{f,Lbl},Src,Dst}|Is], Acc, D) when Lbl =/= 0 ->
- replace(Is, [{I,{f,label(Lbl, D)},Src,Dst}|Acc], D);
-replace([{bs_utf16_size=I,{f,Lbl},Src,Dst}|Is], Acc, D) when Lbl =/= 0 ->
- replace(Is, [{I,{f,label(Lbl, D)},Src,Dst}|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);
diff --git a/lib/compiler/src/beam_dead.erl b/lib/compiler/src/beam_dead.erl
index b15adfa889..7cd07dc3be 100644
--- a/lib/compiler/src/beam_dead.erl
+++ b/lib/compiler/src/beam_dead.erl
@@ -21,112 +21,10 @@
-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]).
@@ -173,7 +71,28 @@ 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) ->
@@ -215,15 +134,13 @@ 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]);
@@ -239,9 +156,49 @@ update_value_dict([Lit,{f,Lbl}|T], Reg, D0) ->
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, []).
@@ -277,15 +234,10 @@ backward([{select,select_val,Reg,{f,Fail0},List0}|Is], D, Acc) ->
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,
+backward([{jump,{f,To0}},{move,Src0,Reg}|Is], D, Acc) ->
+ To1 = shortcut_select_label(To0, Reg, Src0, D),
+ {To,Src} = shortcut_boolean_label(To1, Reg, Src0, D),
+ Move = {move,Src,Reg},
Jump = {jump,{f,To}},
case beam_utils:is_killed_at(Reg, To, D) of
false -> backward([Move|Is], D, [Jump|Acc]);
@@ -301,28 +253,25 @@ 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);
@@ -367,8 +316,8 @@ 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 +327,39 @@ 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.
-
-shortcut_boolean_label(To0, Reg, Bool0, D) when is_boolean(Bool0) ->
+shortcut_boolean_label(To0, Reg, {atom,Bool0}=Lit, D) when is_boolean(Bool0) ->
case beam_utils:code_at(To0, D) of
[{line,_},{bif,'not',_,[Reg],Reg},{jump,{f,To}}|_] ->
- Bool = not Bool0,
+ Bool = {atom,not Bool0},
{shortcut_select_label(To, Reg, Bool, D),Bool};
_ ->
- {To0,Bool0}
+ {To0,Lit}
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) ->
@@ -461,9 +391,9 @@ 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 +418,26 @@ 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
@@ -520,8 +445,19 @@ 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);
@@ -545,20 +481,332 @@ 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_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(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_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_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_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.
diff --git a/lib/compiler/src/beam_flatten.erl b/lib/compiler/src/beam_flatten.erl
index 46835bece1..54e06df995 100644
--- a/lib/compiler/src/beam_flatten.erl
+++ b/lib/compiler/src/beam_flatten.erl
@@ -63,8 +63,7 @@ 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}};
-norm({set,Gets,[S],{get_map_elements,F}}) ->
- {get_map_elements,F,S,{list,Gets}};
+%% 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 b952139f2c..4e699c4fbf 100644
--- a/lib/compiler/src/beam_jump.erl
+++ b/lib/compiler/src/beam_jump.erl
@@ -435,14 +435,14 @@ is_label_used_in(Lbl, Is) ->
is_label_used_in_1(Is, Lbl, gb_sets:empty()).
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);
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;
@@ -452,7 +452,6 @@ is_label_used_in_2({set,_,_,Info}, Lbl) ->
{put_tuple,_} -> false;
{get_tuple_element,_} -> false;
{set_tuple_element,_} -> false;
- {get_map_elements,{f,F}} -> F =:= Lbl;
{line,_} -> false;
_ when is_atom(Info) -> false
end.
diff --git a/lib/compiler/src/beam_split.erl b/lib/compiler/src/beam_split.erl
index 688bba9a94..0c62b0bf3d 100644
--- a/lib/compiler/src/beam_split.erl
+++ b/lib/compiler/src/beam_split.erl
@@ -53,8 +53,8 @@ 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,Gets,[S],{get_map_elements,{f,Lbl}=Fail}}|Is], Bl, Acc)
- when Lbl =/= 0 ->
+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],[],{'catch',L}}|Is], Bl, Acc) ->
split_block(Is, [], [{'catch',R,L}|make_block(Bl, Acc)]);
diff --git a/lib/compiler/src/beam_type.erl b/lib/compiler/src/beam_type.erl
index 58c0f765ae..d9713cef0d 100644
--- a/lib/compiler/src/beam_type.erl
+++ b/lib/compiler/src/beam_type.erl
@@ -106,6 +106,20 @@ 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;
@@ -402,6 +416,10 @@ 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 ->
@@ -451,6 +469,7 @@ 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;
@@ -710,6 +729,8 @@ merge_type_info(NewType, _) ->
verify_type(NewType),
NewType.
+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 8ca368c167..26020e1d29 100644
--- a/lib/compiler/src/beam_utils.erl
+++ b/lib/compiler/src/beam_utils.erl
@@ -26,6 +26,8 @@
code_at/2,bif_to_test/3,is_pure_test/1,
live_opt/1,delete_live_annos/1,combine_heap_needs/2]).
+-export([join_even/2,split_even/1]).
+
-import(lists, [member/2,sort/1,reverse/1,splitwith/2]).
-record(live,
@@ -756,13 +758,9 @@ 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) ->
@@ -832,3 +830,15 @@ x_live([_|Rs], Regs) -> x_live(Rs, Regs);
x_live([], Regs) -> Regs.
is_live(X, Regs) -> ((Regs bsr X) band 1) =:= 1.
+
+%% split_even/1
+%% [1,2,3,4,5,6] -> {[1,3,5],[2,4,6]}
+split_even(Rs) -> split_even(Rs,[],[]).
+split_even([],Ss,Ds) -> {reverse(Ss),reverse(Ds)};
+split_even([S,D|Rs],Ss,Ds) ->
+ split_even(Rs,[S|Ss],[D|Ds]).
+
+%% 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)].
diff --git a/lib/compiler/src/beam_validator.erl b/lib/compiler/src/beam_validator.erl
index 9d5563d13b..c156cf79fe 100644
--- a/lib/compiler/src/beam_validator.erl
+++ b/lib/compiler/src/beam_validator.erl
@@ -1123,7 +1123,9 @@ assert_freg_set(Fr, _) -> error({bad_source,Fr}).
%%% Maps
%% ensure that a list of literals has a strict
-%% ascending term order (also meaning unique literals)
+%% ascending term order (also meaning unique literals).
+%% Single item lists may have registers.
+assert_strict_literal_termorder([_]) -> ok;
assert_strict_literal_termorder(Ls) ->
Vs = lists:map(fun (L) -> get_literal(L) end, Ls),
case check_strict_value_termorder(Vs) of
@@ -1816,6 +1818,7 @@ 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,[]};
diff --git a/lib/compiler/src/beam_z.erl b/lib/compiler/src/beam_z.erl
index c2a6ef604e..0c7bef9183 100644
--- a/lib/compiler/src/beam_z.erl
+++ b/lib/compiler/src/beam_z.erl
@@ -79,17 +79,9 @@ undo_rename({put_map,Fail,assoc,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,[to_typed_literal(V)||V<-List]}};
-undo_rename({get_map_elements,Fail,Src,{list, List}}) ->
- {get_map_elements,Fail,Src,{list,[to_typed_literal(V)||V<-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.
-
-%% to_typed_literal(Arg)
-%% transform Arg to specific literal i.e. float | integer | atom if applicable
-to_typed_literal({literal, V}) when is_float(V) -> {float, V};
-to_typed_literal({literal, V}) when is_atom(V) -> {atom, V};
-to_typed_literal({literal, V}) when is_integer(V) -> {integer, V};
-to_typed_literal({literal, []}) -> nil;
-to_typed_literal(V) -> V.
diff --git a/lib/compiler/src/cerl.erl b/lib/compiler/src/cerl.erl
index 9d6768b157..1a2957ee31 100644
--- a/lib/compiler/src/cerl.erl
+++ b/lib/compiler/src/cerl.erl
@@ -123,11 +123,13 @@
bitstr_flags/1,
%% keep map exports here for now
+ 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,
@@ -1590,7 +1592,17 @@ map_arg(#c_map{arg=M}) ->
-spec c_map([c_map_pair()]) -> c_map().
c_map(Pairs) ->
- #c_map{es=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().
@@ -1598,25 +1610,13 @@ 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 ann_c_map([term()], [cerl()]) -> c_map() | c_literal().
+-spec ann_c_map([term()], [c_map_pair()]) -> c_map() | c_literal().
-ann_c_map(As,Es) ->
+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=Mval}=M,Es) when is_map(Mval), map_size(Mval) =:= 0 ->
- Pairs = [[Ck,Cv]||#c_map_pair{key=Ck,val=Cv}<-Es],
- IsLit = lists:foldl(fun(Pair,Res) ->
- Res andalso is_lit_list(Pair)
- end, true, Pairs),
- Fun = fun(Pair) -> [K,V] = lit_list_vals(Pair), {K,V} end,
- case IsLit of
- false ->
- #c_map{arg=M, es=Es, anno=As };
- true ->
- #c_literal{anno=As, val=maps:from_list(lists:map(Fun, Pairs))}
- end;
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) ->
@@ -1644,14 +1644,14 @@ fold_map_pairs(As,[#c_map_pair{op=#c_literal{val=exact},key=Ck,val=Cv}=E|Es],M)
end;
false ->
#c_map{arg=#c_literal{val=M,anno=As}, es=[E|Es], anno=As }
- end;
-fold_map_pairs(As,Es,M) ->
- #c_map{arg=#c_literal{val=M,anno=As}, es=Es, anno=As }.
+ end.
-%-spec update_c_map(c_map() | c_literal(), [c_map_pair()]) -> c_map() | c_literal().
+-spec update_c_map(c_map(), cerl(), [cerl()]) -> c_map() | c_literal().
-update_c_map(Old,M,Es) ->
- #c_map{arg=M, es = Es, anno = get_ann(Old)}.
+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.
@@ -3063,10 +3063,12 @@ pat_vars(Node, Vs) ->
map ->
pat_list_vars(map_es(Node), Vs);
map_pair ->
- pat_list_vars([map_pair_op(Node),map_pair_key(Node),map_pair_val(Node)],Vs);
+ %% 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])
diff --git a/lib/compiler/src/cerl_clauses.erl b/lib/compiler/src/cerl_clauses.erl
index 87bd47c08b..ef74c5b76f 100644
--- a/lib/compiler/src/cerl_clauses.erl
+++ b/lib/compiler/src/cerl_clauses.erl
@@ -354,29 +354,29 @@ 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;
+ 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 75740e8b9d..f8489a800b 100644
--- a/lib/compiler/src/cerl_inline.erl
+++ b/lib/compiler/src/cerl_inline.erl
@@ -1341,23 +1341,23 @@ 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, S) ->
+i_map(E, Ctx, Ren, Env, S0) ->
%% Visit the segments for value.
- {M1, S1} = i(map_arg(E), value, Ren, Env, S),
+ {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, S) ->
- %% It is not necessary to visit the Op and Key fields,
- %% since these are always literals.
- {Val, S1} = i(map_pair_val(E), Ctx, Ren, Env, S),
+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),
- Key = map_pair_key(E),
- S2 = count_size(weight(map_pair), S1),
- {update_c_map_pair(E, Op, Key, Val), S2}.
+ 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
@@ -1420,15 +1420,11 @@ i_pattern(E, Ren, Env, Ren0, Env0, S) ->
S2 = count_size(weight(binary), S1),
{update_c_binary(E, Es), S2};
map ->
- %% map patterns should not have args
- M = map_arg(E),
-
{Es, S1} = mapfoldl(fun (E, S) ->
i_map_pair_pattern(E, Ren, Env, Ren0, Env0, S)
- end,
- S, map_es(E)),
+ end, S, map_es(E)),
S2 = count_size(weight(map), S1),
- {update_c_map(E, M, Es), S2};
+ {update_c_map(E, map_arg(E), Es), S2};
_ ->
case is_literal(E) of
true ->
@@ -1464,12 +1460,12 @@ i_bitstr_pattern(E, Ren, Env, Ren0, Env0, S) ->
i_map_pair_pattern(E, Ren, Env, Ren0, Env0, S) ->
%% It is not necessary to visit the Op it is always a literal.
- %% Same goes for Key
- {Val, S1} = i_pattern(map_pair_val(E), Ren, Env, Ren0, Env0, S),
+ %% 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
- Key = map_pair_key(E),
- S2 = count_size(weight(map_pair), S1),
- {update_c_map_pair(E, Op, Key, Val), S2}.
+ S3 = count_size(weight(map_pair), S2),
+ {update_c_map_pair(E, Op, Key, Val), S3}.
%% ---------------------------------------------------------------------
diff --git a/lib/compiler/src/cerl_trees.erl b/lib/compiler/src/cerl_trees.erl
index e53bdd4efb..b93da8e97f 100644
--- a/lib/compiler/src/cerl_trees.erl
+++ b/lib/compiler/src/cerl_trees.erl
@@ -520,9 +520,9 @@ variables(T, S) ->
tuple ->
vars_in_list(tuple_es(T), S);
map ->
- vars_in_list(map_es(T), S);
+ 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);
+ 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)),
diff --git a/lib/compiler/src/compile.erl b/lib/compiler/src/compile.erl
index c7d91070f6..f347438509 100644
--- a/lib/compiler/src/compile.erl
+++ b/lib/compiler/src/compile.erl
@@ -431,11 +431,6 @@ pass(from_core) ->
{".core",[?pass(parse_core)|core_passes()]};
pass(from_asm) ->
{".S",[?pass(beam_consult_asm)|asm_passes()]};
-pass(asm) ->
- %% TODO: remove 'asm' in 18.0
- io:format("compile:file/2 option 'asm' has been deprecated and will be~n"
- "removed in the 18.0 release. Use 'from_asm' instead.~n"),
- pass(from_asm);
pass(from_beam) ->
{".beam",[?pass(read_beam_file)|binary_passes()]};
pass(_) -> none.
diff --git a/lib/compiler/src/core_lib.erl b/lib/compiler/src/core_lib.erl
index 0d95971f91..730e3a5317 100644
--- a/lib/compiler/src/core_lib.erl
+++ b/lib/compiler/src/core_lib.erl
@@ -236,10 +236,15 @@ vu_pat_seg_list(V, Ss, St) ->
end
end, St, Ss).
-vu_map_pairs(V, [#c_map_pair{val=Pat}|T], St0) ->
- case vu_pattern(V, Pat, St0) of
- {true,_}=St -> St;
- St -> vu_map_pairs(V, T, St)
+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.
diff --git a/lib/compiler/src/core_lint.erl b/lib/compiler/src/core_lint.erl
index 25df33a287..c0e2bdaba0 100644
--- a/lib/compiler/src/core_lint.erl
+++ b/lib/compiler/src/core_lint.erl
@@ -33,9 +33,6 @@
%% 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.
%%
@@ -211,7 +208,7 @@ 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.
@@ -247,40 +244,42 @@ 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_map{es=Es}, Def, _Rt, St) ->
- gexpr_list(Es, Def, St);
-gexpr(#c_map_pair{key=K,val=V}, Def, _Rt, St) ->
- gexpr_list([K,V], 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{val=is_record},
args=[Arg,#c_literal{val=Tag},#c_literal{val=Size}]},
- Def, 1, St) when is_atom(Tag), is_integer(Size) ->
- gexpr(Arg, Def, 1, St);
+ 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, 1, St) ->
- add_error({illegal_guard,St#lint.func}, St);
+ _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, 1, St) when is_atom(Name) ->
+ 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, St);
+ gexpr_list(As, Def, St1);
false ->
- add_error({illegal_guard,St#lint.func}, St)
+ 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);
@@ -319,23 +318,25 @@ is_guard_bif(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_map{es=Es}, Def, _Rt, St) ->
- expr_list(Es, Def, St);
-expr(#c_map_pair{key=K,val=V},Def,_Rt,St) ->
- expr_list([K,V],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);
@@ -361,15 +362,26 @@ 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) ->
diff --git a/lib/compiler/src/core_parse.hrl b/lib/compiler/src/core_parse.hrl
index 4a00535360..7fd4a82e4e 100644
--- a/lib/compiler/src/core_parse.hrl
+++ b/lib/compiler/src/core_parse.hrl
@@ -72,7 +72,8 @@
-record(c_map, {anno=[],
arg=#c_literal{val=#{}} :: cerl:c_var() | cerl:c_literal(),
- es :: [cerl:c_map_pair()]}).
+ es :: [cerl:c_map_pair()],
+ is_pat=false :: boolean()}).
-record(c_map_pair, {anno=[],
op :: #c_literal{val::'assoc'} | #c_literal{val::'exact'},
diff --git a/lib/compiler/src/core_parse.yrl b/lib/compiler/src/core_parse.yrl
index a66ad4235f..8bdb6bc37d 100644
--- a/lib/compiler/src/core_parse.yrl
+++ b/lib/compiler/src/core_parse.yrl
@@ -58,7 +58,8 @@ Terminals
%% Separators
-'(' ')' '{' '}' '[' ']' '|' ',' '->' '=' '/' '<' '>' ':' '-|' '#' '~' '::'
+'(' ')' '{' '}' '[' ']' '|' ',' '->' '=' '/' '<' '>' ':' '-|' '#'
+'~' '=>' ':='
%% Keywords (atoms are assumed to always be single-quoted).
@@ -182,23 +183,24 @@ atomic_pattern -> atomic_literal : '$1'.
tuple_pattern -> '{' '}' : c_tuple([]).
tuple_pattern -> '{' anno_patterns '}' : c_tuple('$2').
-map_pattern -> '~' '{' '}' '~' : #c_map{es=[]}.
+map_pattern -> '~' '{' '}' '~' : c_map_pattern([]).
map_pattern -> '~' '{' map_pair_patterns '}' '~' :
- #c_map{es=lists:sort('$3')}.
+ c_map_pattern(lists:sort('$3')).
map_pair_patterns -> map_pair_pattern : ['$1'].
map_pair_patterns -> map_pair_pattern ',' map_pair_patterns : ['$1' | '$3'].
-map_pair_pattern -> '~' '<' anno_pattern ',' anno_pattern '>' :
- #c_map_pair{op=#c_literal{val=exact},key='$3',val='$5'}.
+map_pair_pattern -> anno_expression ':=' anno_pattern :
+ #c_map_pair{op=#c_literal{val=exact},
+ key='$1',val='$3'}.
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'}.
@@ -206,7 +208,7 @@ binary_pattern -> '#' '{' segment_patterns '}' '#' : #c_binary{segments='$3'}.
segment_patterns -> segment_pattern ',' segment_patterns : ['$1' | '$3'].
segment_patterns -> segment_pattern : ['$1'].
-segment_pattern -> '#' '<' anno_pattern '>' '(' anno_patterns ')':
+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};
@@ -279,15 +281,15 @@ 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{es=[]}.
-map_expr -> '~' '{' map_pairs '}' '~' : #c_map{es='$3'}.
-map_expr -> '~' '{' map_pairs '|' variable '}' '~' : #c_map{arg='$5',es='$3'}.
-map_expr -> '~' '{' map_pairs '|' map_expr '}' '~' : #c_map{arg='$5',es='$3'}.
+map_expr -> '~' '{' '}' '~' : c_map([]).
+map_expr -> '~' '{' map_pairs '}' '~' : c_map('$3').
+map_expr -> '~' '{' map_pairs '|' variable '}' '~' : ann_c_map([], '$5', '$3').
+map_expr -> '~' '{' map_pairs '|' map_expr '}' '~' : ann_c_map([], '$5', '$3').
map_pairs -> map_pair : ['$1'].
map_pairs -> map_pair ',' map_pairs : ['$1' | '$3'].
@@ -295,10 +297,10 @@ map_pairs -> map_pair ',' map_pairs : ['$1' | '$3'].
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='$3',val='$5'}.
-map_pair_exact -> '~' '<' anno_expression ',' anno_expression'>' :
- #c_map_pair{op=#c_literal{val=exact},key='$3',val='$5'}.
+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').
@@ -307,7 +309,7 @@ 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 -> segment ',' segments : ['$1' | '$3'].
segments -> segment : ['$1'].
@@ -410,9 +412,55 @@ Erlang code.
-include("core_parse.hrl").
--import(cerl, [c_cons/2,c_tuple/1]).
+-import(cerl, [ann_c_map/3,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 83412ecdd7..662ef6c83f 100644
--- a/lib/compiler/src/core_pp.erl
+++ b/lib/compiler/src/core_pp.erl
@@ -125,8 +125,8 @@ format_1(#c_literal{anno=A,val=M},Ctxt) when is_map(M) ->
_ -> assoc
end,
Cpairs = [#c_map_pair{op=#c_literal{val=Op},
- key=#c_literal{val=V},
- val=#c_literal{val=K}} || {K,V} <- Pairs],
+ 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)];
@@ -183,15 +183,9 @@ format_1(#c_map{arg=Var,es=Es}, Ctxt) ->
"}~"
];
format_1(#c_map_pair{op=#c_literal{val=assoc},key=K,val=V}, Ctxt) ->
- ["::<",
- format_hseq([K,V], ",", add_indent(Ctxt, 1), fun format/2),
- ">"
- ];
+ format_map_pair("=>", K, V, Ctxt);
format_1(#c_map_pair{op=#c_literal{val=exact},key=K,val=V}, Ctxt) ->
- ["~<",
- format_hseq([K,V], ",", add_indent(Ctxt, 1), fun format/2),
- ">"
- ];
+ 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)))];
@@ -448,6 +442,12 @@ format_list_tail(#c_cons{anno=[],hd=H,tl=T}, Ctxt) ->
format_list_tail(Tail, Ctxt) ->
["|",format(Tail, add_indent(Ctxt, 1)),"]"].
+format_map_pair(Op, K, V, Ctxt0) ->
+ Ctxt1 = add_indent(Ctxt0, 1),
+ Txt = format(K, set_class(Ctxt1, expr)),
+ Ctxt2 = add_indent(Ctxt0, width(Txt, Ctxt1)),
+ [Txt,Op,format(V, Ctxt2)].
+
indent(Ctxt) -> indent(Ctxt#ctxt.indent, Ctxt).
indent(N, _) when N =< 0 -> "";
diff --git a/lib/compiler/src/core_scan.erl b/lib/compiler/src/core_scan.erl
index b7799b373a..8ab20b1982 100644
--- a/lib/compiler/src/core_scan.erl
+++ b/lib/compiler/src/core_scan.erl
@@ -271,8 +271,10 @@ 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("=>" ++ 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 6c75538194..bcc2297250 100644
--- a/lib/compiler/src/erl_bifs.erl
+++ b/lib/compiler/src/erl_bifs.erl
@@ -134,6 +134,7 @@ 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/sys_core_fold.erl b/lib/compiler/src/sys_core_fold.erl
index ed8f609082..de92792a68 100644
--- a/lib/compiler/src/sys_core_fold.erl
+++ b/lib/compiler/src/sys_core_fold.erl
@@ -313,7 +313,7 @@ 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
@@ -607,14 +607,6 @@ eval_binary_1([#c_bitstr{val=#c_literal{val=Val},size=#c_literal{val=Sz},
error:_ ->
throw(impossible)
end;
-eval_binary_1([#c_bitstr{val=#c_literal{},size=#c_literal{},
- unit=#c_literal{},type=#c_literal{},
- flags=#c_cons{}=Flags}=Bitstr|Ss], Acc0) ->
- case cerl:fold_literal(Flags) of
- #c_literal{} = Flags1 ->
- eval_binary_1([Bitstr#c_bitstr{flags=Flags1}|Ss], Acc0);
- _ -> throw(impossible)
- end;
eval_binary_1([], Acc) -> Acc;
eval_binary_1(_, _) -> throw(impossible).
@@ -688,23 +680,15 @@ 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 ->
@@ -1386,7 +1370,6 @@ eval_is_record(Call, _, _, _, _) -> Call.
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(#c_map{}) -> true;
is_not_integer(_) -> false.
%% is_not_tuple(Core) -> true | false.
@@ -1394,7 +1377,6 @@ is_not_integer(_) -> false.
is_not_tuple(#c_literal{val=Val}) when not is_tuple(Val) -> true;
is_not_tuple(#c_cons{}) -> true;
-is_not_tuple(#c_map{}) -> true;
is_not_tuple(_) -> false.
%% eval_setelement(Call, Pos, Tuple, NewVal) -> Core.
@@ -2048,12 +2030,31 @@ case_opt_args([], Cs, _Sub, _LitExpr, Acc) ->
%% Try to expand one argument to several arguments (if tuple/list)
%% or to remove a literal argument.
%%
-case_opt_arg(E0, Sub, Cs0, LitExpr) ->
- E = maybe_replace_var(E0, Sub),
- case cerl:is_data(E) of
+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,_} ->
@@ -2063,18 +2064,42 @@ case_opt_arg(E0, Sub, Cs0, LitExpr) ->
end
end.
-%% maybe_replace_var(Expr0, Sub) -> Expr
+%% 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.
%%
-maybe_replace_var(E, Sub) ->
- case cerl:is_c_var(E) of
- false -> E;
- true -> maybe_replace_var_1(E, Sub)
- end.
-
-maybe_replace_var_1(E, #sub{t=Tdb}) ->
+case_expand_var(E, #sub{t=Tdb}) ->
case orddict:find(cerl:var_name(E), Tdb) of
{ok,T0} ->
case cerl:is_c_tuple(T0) of
@@ -2091,9 +2116,8 @@ maybe_replace_var_1(E, #sub{t=Tdb}) ->
%% operator will fail when used in map
%% construction (only the '=>' operator is allowed
%% when constructing a map from scratch).
- ToData = fun coerce_to_data/1,
try
- cerl_trees:map(ToData, T0)
+ cerl_trees:map(fun coerce_to_data/1, T0)
catch
throw:impossible ->
%% Something unsuitable was found (map or
@@ -2147,8 +2171,9 @@ case_opt_nomatch(_, [], _) -> [].
%% will match, and we can remove the corresponding pattern from
%% each clause.
%%
-%% The only complication is if the literal is a binary. Binary
-%% pattern matching is tricky, so we will give up in that case.
+%% 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
@@ -2175,6 +2200,10 @@ case_opt_lit_1(E, [{[P|Ps],C,PsAcc,Bs0}|Cs]) ->
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),
@@ -2184,45 +2213,48 @@ case_opt_data(E, Cs0) ->
{ok,Es,Cs}
catch
throw:impossible ->
+ %% The pattern contained a binary or map.
{error,Cs0}
end.
-case_opt_data_1([{[P|Ps0],C,PsAcc,Bs0}|Cs], Es, TypeSig) ->
- {ok,Ps1,Bs1} = case_data_pat(P, TypeSig),
- [{Ps1++Ps0,C,PsAcc,Bs1++Bs0}|
- case_opt_data_1(Cs, Es, TypeSig)];
+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(Pattern, Type, Arity) -> {ok,[Pattern],[{AliasVar,Pat}]} | error.
-
-case_data_pat(P, TypeSig) ->
- case cerl:is_data(P) of
- false ->
- case_data_pat_var(P, TypeSig);
- true ->
- {ok,cerl:data_es(P),[]}
- end.
-
-%% case_data_pat_var(Pattern, {DataType,ArityType}) ->
-%% {ok,[Pattern],[{AliasVar,Pat}]}
-
-case_data_pat_var(P, {Type,Arity}=TypeSig) ->
- %% 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 data
- %% constructor as compiler generated.
- Ann = [compiler_generated|cerl:get_ann(P)],
+case_data_pat_alias(P, BindTo0, TypeSig, Bs0) ->
case cerl:type(P) of
- var ->
- Vars = make_vars(cerl:get_ann(P), Arity),
- {ok,Vars,[{P,cerl:ann_make_data(Ann, Type, Vars)}]};
alias ->
- V = cerl:alias_var(P),
- Apat = cerl:alias_pat(P),
- {ok,Ps,Bs} = case_data_pat(Apat, TypeSig),
- {ok,Ps,[{V,cerl:ann_make_data(Ann, Type,
- pat_to_expr_list(Ps))}|Bs]}
+ %% 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,
+ Vars = make_vars([], Arity),
+ Ann = [compiler_generated],
+ 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.
@@ -2269,18 +2301,11 @@ make_var_name() ->
list_to_atom("fol"++integer_to_list(N)).
letify(Bs, Body) ->
+ Ann = cerl:get_ann(Body),
foldr(fun({V,Val}, B) ->
- letify(V, Val, B)
+ cerl:ann_c_let(Ann, [V], Val, B)
end, Body, Bs).
-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.
-
%% opt_case_in_let(LetExpr) -> LetExpr'
opt_case_in_let(#c_let{vars=Vs,arg=Arg,body=B}=Let, Sub) ->
@@ -2645,7 +2670,7 @@ opt_simple_let_2(Let0, Vs0, Arg0, Body0, effect, Sub) ->
opt_case_in_let_arg(opt_case_in_let(Let, Sub), effect, Sub)
end
end;
-opt_simple_let_2(Let, Vs0, Arg0, Body, value, Sub) ->
+opt_simple_let_2(Let0, Vs0, Arg0, Body, value, Sub) ->
case {Vs0,Arg0,Body} of
{[#c_var{name=N1}],Arg,#c_var{name=N2}} ->
case N1 =:= N2 of
@@ -2664,9 +2689,17 @@ opt_simple_let_2(Let, Vs0, Arg0, Body, value, Sub) ->
%% 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}, Sub),
- value, Sub)
+ %% 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 ->
+ expr(#c_seq{arg=Arg,body=Body}, value,
+ 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, Sub), value, Sub)
+ end
end.
move_case_into_arg(#c_case{arg=#c_let{vars=OuterVars0,arg=OuterArg,
@@ -3116,7 +3149,7 @@ add_bin_opt_info(Core, Term) ->
end.
add_warning(Core, Term) ->
- case is_compiler_generated(Core) of
+ case suppress_warning(Core) of
true ->
ok;
false ->
@@ -3141,9 +3174,17 @@ get_file([{file,File}|_]) -> File;
get_file([_|T]) -> get_file(T);
get_file([]) -> "no_file". % should not happen
+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}))).
diff --git a/lib/compiler/src/sys_pre_expand.erl b/lib/compiler/src/sys_pre_expand.erl
index 761ae8409c..f99307c865 100644
--- a/lib/compiler/src/sys_pre_expand.erl
+++ b/lib/compiler/src/sys_pre_expand.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1996-2012. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2014. 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
@@ -33,12 +33,15 @@
-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
+ optional_callbacks=[] :: [fa()], %Optional callbacks
defined, %Defined functions (gb_set)
vcount=0, %Variable counter
func=[], %Current function
@@ -99,7 +102,21 @@ define_functions(Forms, #expand{defined=Predef}=St) ->
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}}.
+ 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(St) ->
{Mpf1,St1}=module_predef_func_beh_info(St),
@@ -108,19 +125,24 @@ module_predef_funcs(St) ->
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,
+ defined=Defined,
exports=Exports}=St) ->
PreDef=[{behaviour_info,1}],
PreExp=PreDef,
- {[gen_beh_info(Callbacks)],
+ {[gen_beh_info(Callbacks, OptionalCallbacks)],
St#expand{defined=gb_sets:union(gb_sets:from_list(PreDef), Defined),
exports=union(from_list(PreExp), 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]) ->
@@ -130,6 +152,14 @@ make_list([{_,_,_,[{{Name,Arity},_}]}|Rest]) ->
{integer,0,Arity}]},
make_list(Rest)}.
+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(St) ->
PreDef = [{module_info,0},{module_info,1}],
PreExp = PreDef,
@@ -232,9 +262,18 @@ pattern({map,Line,Ps}, St0) ->
{TPs,St1} = pattern_list(Ps, St0),
{{map,Line,TPs},St1};
pattern({map_field_exact,Line,K0,V0}, St0) ->
- {K,St1} = expr(K0, 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};
diff --git a/lib/compiler/src/v3_codegen.erl b/lib/compiler/src/v3_codegen.erl
index 47a357c23d..8c1a0c08ac 100644
--- a/lib/compiler/src/v3_codegen.erl
+++ b/lib/compiler/src/v3_codegen.erl
@@ -210,7 +210,7 @@ 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_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.
@@ -643,10 +643,6 @@ select_val_cg(tuple, R, [Arity,{f,Lbl}], Tf, Vf, [{label,Lbl}|Sis]) ->
[{test,is_tuple,{f,Tf},[R]},{test,test_arity,{f,Vf},[R,Arity]}|Sis];
select_val_cg(tuple, R, Vls, Tf, Vf, Sis) ->
[{test,is_tuple,{f,Tf},[R]},{select_tuple_arity,R,{f,Vf},{list,Vls}}|Sis];
-select_val_cg(map, R, [_Val,{f,Lbl}], Fail, Fail, [{label,Lbl}|Sis]) ->
- [{test,is_map,{f,Fail},[R]}|Sis];
-select_val_cg(map, R, [_Val,{f,Lbl}|_], Tf, _Vf, [{label,Lbl}|Sis]) ->
- [{test,is_map,{f,Tf},[R]}|Sis];
select_val_cg(Type, R, [Val, {f,Lbl}], Fail, Fail, [{label,Lbl}|Sis]) ->
[{test,is_eq_exact,{f,Fail},[R,{Type,Val}]}|Sis];
select_val_cg(Type, R, [Val, {f,Lbl}], Tf, Vf, [{label,Lbl}|Sis]) ->
@@ -947,27 +943,34 @@ select_extract_map(Src, Vs, Fail, I, Vdb, Bef, St) ->
%% Assume keys are term-sorted
Rsrc = fetch_var(Src, Bef),
- {{HasKs,GetVs},Aft} = lists:foldr(fun
- ({map_pair,Key,{var,V}},{{HasKsi,GetVsi},Int0}) ->
+ {{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 ->
- {{[Key|HasKsi],GetVsi},Int0};
+ RK = fetch_var(K,Int0),
+ {{HasKsi,GetVsi,[RK|HasVarVsi],GetVarVsi},Int0};
_Other ->
Reg1 = put_reg(V, Int0#sr.reg),
Int1 = Int0#sr{reg=Reg1},
- {{HasKsi,[Key,fetch_reg(V, Reg1)|GetVsi]},Int1}
+ 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 = case {HasKs,GetVs} of
- {HasKs,[]} ->
- [{test,has_map_fields,{f,Fail},Rsrc,{list,HasKs}}];
- {[],GetVs} ->
- [{get_map_elements, {f,Fail},Rsrc,{list,GetVs}}];
- {HasKs,GetVs} ->
- [{test,has_map_fields,{f,Fail},Rsrc,{list,HasKs}},
- {get_map_elements, {f,Fail},Rsrc,{list,GetVs}}]
- 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}.
@@ -1504,9 +1507,39 @@ set_cg([{var,R}], {binary,Segs}, Le, Vdb, Bef,
%% 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,
+ #cg{in_catch=InCatch,bfail=Bfail}=St) ->
+
+ Fail = {f,Bfail},
+ {Sis,Int0} =
+ case InCatch of
+ true -> adjust_stack(Bef, Le#l.i, Le#l.i+1, Vdb);
+ false -> {[],Bef}
+ end,
+ SrcReg = cg_reg_arg(Map,Int0),
+ Line = line(Le#l.a),
+
+ List = [cg_reg_arg(K,Int0),cg_reg_arg(V,Int0)],
+
+ Live = max_reg(Bef#sr.reg),
+ Int1 = Int0#sr{reg=put_reg(R, Int0#sr.reg)},
+ Aft = clear_dead(Int1, Le#l.i, Vdb),
+ Target = fetch_reg(R, Int1#sr.reg),
+
+ I = case Op of
+ assoc -> put_map_assoc;
+ exact -> put_map_exact
+ end,
+ {Sis++[Line]++[{I,Fail,SrcReg,Target,Live,{list,List}}],Aft,St};
+
+% Map (possibly) multiple literal keys
set_cg([{var,R}], {map,Op,Map,Es}, Le, Vdb, Bef,
#cg{in_catch=InCatch,bfail=Bfail}=St) ->
+ %% assert key literals
+ [] = [Var||{map_pair,{var,_}=Var,_} <- Es],
+
Fail = {f,Bfail},
{Sis,Int0} =
case InCatch of
diff --git a/lib/compiler/src/v3_core.erl b/lib/compiler/src/v3_core.erl
index 59ec0d4199..f0b90ff31c 100644
--- a/lib/compiler/src/v3_core.erl
+++ b/lib/compiler/src/v3_core.erl
@@ -78,7 +78,7 @@
-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,
- ann_c_map/2, ann_c_map/3]).
+ ann_c_map/3]).
-include("core_parse.hrl").
@@ -105,7 +105,8 @@
-record(iset, {anno=#a{},var,arg}).
-record(itry, {anno=#a{},args,vars,body,evars,handler}).
-record(ifilter, {anno=#a{},arg}).
--record(igen, {anno=#a{},acc_pat,acc_guard,skip_pat,tail,tail_pat,arg}).
+-record(igen, {anno=#a{},ceps=[],acc_pat,acc_guard,
+ skip_pat,tail,tail_pat,arg}).
-type iapply() :: #iapply{}.
-type ibinary() :: #ibinary{}.
@@ -169,60 +170,81 @@ form({attribute,_,_,_}=F, {Fs,As,Ws,File}, _Opts) ->
attribute({attribute,Line,Name,Val}) ->
{#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
@@ -493,16 +515,16 @@ 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),
+ 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),
@@ -514,22 +536,7 @@ expr({tuple,L,Es0}, St0) ->
A = record_anno(L, St1),
{annotate_tuple(A, Es1, St1),Eps,St1};
expr({map,L,Es0}, St0) ->
- % erl_lint should make sure only #{ K => V } are allowed
- % in map construction.
- try map_pair_list(Es0, St0) of
- {Es1,Eps,St1} ->
- A = lineno_anno(L, St1),
- {ann_c_map(A,Es1),Eps,St1}
- catch
- throw:{bad_map,Warning} ->
- St = add_warning(L, Warning, St0),
- LineAnno = lineno_anno(L, St),
- As = [#c_literal{anno=LineAnno,val=badarg}],
- {#icall{anno=#a{anno=LineAnno}, %Must have an #a{}
- module=#c_literal{anno=LineAnno,val=erlang},
- name=#c_literal{anno=LineAnno,val=error},
- args=As},[],St}
- end;
+ map_build_pairs(#c_literal{val=#{}}, Es0, full_anno(L, St0), St0);
expr({map,L,M0,Es0}, St0) ->
try expr_map(M0,Es0,lineno_anno(L, St0),St0) of
{_,_,_}=Res -> Res
@@ -544,7 +551,7 @@ expr({map,L,M0,Es0}, St0) ->
args=As},[],St}
end;
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 ->
@@ -562,26 +569,26 @@ expr({block,_,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),
@@ -595,7 +602,7 @@ 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,
@@ -604,7 +611,7 @@ 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),
@@ -634,11 +641,11 @@ 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},
@@ -649,13 +656,9 @@ 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}, #core{wanted=Wanted}=St0) ->
+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),
@@ -673,24 +676,24 @@ 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),
+ St = add_warning(L, nomatch, St5),
{#icase{anno=#a{anno=Lanno},
- args=[E2],clauses=[],fc=Fc},Eps,St};
+ args=[E2],clauses=[],fc=Fc},Eps1++Eps2,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,Qs0},More}, St0) ->
%% Optimise '++' here because of the list comprehension algorithm.
@@ -717,13 +720,13 @@ expr({op,L,'orelse',E1,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}.
@@ -772,63 +775,46 @@ expr_map(M0,Es0,A,St0) ->
Fc = fail_clause([Fpat], A, #c_literal{val=badarg}),
{#icase{anno=#a{anno=A},args=[M1],clauses=Cs,fc=Fc},Mps,St3};
{_,_} ->
- {Es1,Eps,St2} = map_pair_list(Es0, St1),
- {ann_c_map(A,M1,Es1),Mps++Eps,St2}
+ {M2,Eps,St2} = map_build_pairs(M1, Es0, A, St1),
+ {M2,Mps++Eps,St2}
end;
false -> throw({bad_map,bad_map})
end.
+map_build_pairs(Map0, Es0, Ann, St0) ->
+ {Es,Pre,St1} = map_build_pairs_1(Es0, St0),
+ case ann_c_map(Ann, Map0, Es) of
+ #c_literal{}=Map ->
+ {Map,[],St1};
+ #c_map{}=Map ->
+ {Var,St2} = new_var(St1),
+ {Var,Pre++[#iset{var=Var,arg=Map}],St2}
+ end.
+
+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_map{}) -> true;
is_valid_map_src(#c_var{}) -> true;
is_valid_map_src(_) -> false.
-map_pair_list(Es, St) ->
- foldr(fun
- ({map_field_assoc,L,K0,V0}, {Ces,Esp,St0}) ->
- {K1,Ep0,St1} = safe(K0, St0),
- K = ensure_valid_map_key(K1),
- {V,Ep1,St2} = safe(V0, St1),
- A = lineno_anno(L, St2),
- Pair = #c_map_pair{op=#c_literal{val=assoc},anno=A,key=K,val=V},
- {[Pair|Ces],Ep0 ++ Ep1 ++ Esp,St2};
- ({map_field_exact,L,K0,V0}, {Ces,Esp,St0}) ->
- {K1,Ep0,St1} = safe(K0, St0),
- K = ensure_valid_map_key(K1),
- {V,Ep1,St2} = safe(V0, St1),
- A = lineno_anno(L, St2),
- Pair = #c_map_pair{op=#c_literal{val=exact},anno=A,key=K,val=V},
- {[Pair|Ces],Ep0 ++ Ep1 ++ Esp,St2}
- end, {[],[],St}, Es).
-
-ensure_valid_map_key(K0) ->
- case coalesced_map_key(K0) of
- {ok,K1} -> K1;
- error -> throw({bad_map,bad_map_key})
- end.
-
-coalesced_map_key(#c_literal{}=K) -> {ok,K};
-%% Dialyzer hack redux
-%% DO coalesce tuples and list in maps for dialyzer
-%% Dialyzer tries to break this apart, don't let it
-coalesced_map_key(#c_tuple{}=K) ->
- case core_lib:is_literal(K) of
- true -> {ok,cerl:fold_literal(K)};
- false -> error
- end;
-coalesced_map_key(#c_cons{}=K) ->
- case core_lib:is_literal(K) of
- true -> {ok,cerl:fold_literal(K)};
- false -> error
- end;
-coalesced_map_key(_) -> error.
-
%% 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]},
pats=[c_tuple(Evs)],guard=[#c_literal{val=true}],
@@ -836,15 +822,15 @@ try_exception(Ecs0, St0) ->
name=#c_literal{val=raise},
args=[Info,Value]}]},
Hs = [#icase{anno=#a{},args=[c_tuple(Evs)],clauses=Ecs1,fc=Ec}],
- {Evs,Hs,St2}.
+ {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},
@@ -978,20 +964,21 @@ bitstr({bin_element,_,E0,Size0,[Type,{unit,Unit}|Flags]}, 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,name=NameInfo},
- {Fun,[],St3}.
+ {Fun,Ceps,St3}.
%% lc_tq(Line, Exp, [Qualifier], Mc, State) -> {LetRec,[PreExp],State}.
%% This TQ from Simon PJ pp 127-138.
-lc_tq(Line, E, [#igen{anno=GAnno,acc_pat=AccPat,acc_guard=AccGuard,
+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),
@@ -1026,7 +1013,7 @@ lc_tq(Line, E, [#igen{anno=GAnno,acc_pat=AccPat,acc_guard=AccGuard,
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]}]},
- [],St4};
+ 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) ->
@@ -1051,7 +1038,8 @@ bc_tq(Line, Exp, Qs0, _, St0) ->
args=[Sz]}}] ++ BcPre,
{E,Pre,St}.
-bc_tq1(Line, E, [#igen{anno=GAnno,acc_pat=AccPat,acc_guard=AccGuard,
+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),
@@ -1089,7 +1077,7 @@ bc_tq1(Line, E, [#igen{anno=GAnno,acc_pat=AccPat,acc_guard=AccGuard,
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]}]},
- [],St4};
+ 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) ->
@@ -1153,7 +1141,7 @@ preprocess_quals(Line, [Q|Qs0], St0, Acc) ->
{Gen,St} = generator(Line, Q, Gs, St0),
preprocess_quals(Line, Qs, St, [Gen|Acc]);
false ->
- LAnno = #a{anno=lineno_anno(get_anno(Q), St0)},
+ 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
@@ -1178,6 +1166,11 @@ 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.
@@ -1200,7 +1193,7 @@ is_generator(_) -> false.
generator(Line, {generate,Lg,P0,E}, Gs, St0) ->
LA = lineno_anno(Line, St0),
GA = lineno_anno(Lg, St0),
- {Head,St1} = list_gen_pattern(P0, Line, 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
@@ -1220,25 +1213,27 @@ generator(Line, {generate,Lg,P0,E}, Gs, St0) ->
ann_c_cons(LA, Skip, Tail)}
end,
{Ce,Pre,St4} = safe(E, St3),
- Gen = #igen{anno=#a{anno=GA},acc_pat=AccPat,acc_guard=Cg,skip_pat=SkipPat,
+ 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} = pattern(P, 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,St1} = append_tail_segment(Segs, St0),
+ {AccSegs,Tail,TailSeg,St2} = append_tail_segment(Segs, St1),
AccPat = Cp#c_binary{segments=AccSegs},
- {Cg,St2} = lc_guard_tests(Gs, St1),
- {SkipSegs,St3} = emasculate_segments(AccSegs, St2),
+ {Cg,St3} = lc_guard_tests(Gs, St2),
+ {SkipSegs,St4} = emasculate_segments(AccSegs, St3),
SkipPat = Cp#c_binary{segments=SkipSegs},
- {Ce,Pre,St4} = safe(E, St3),
+ {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,St4}.
+ {Gen,St5}.
append_tail_segment(Segs, St0) ->
{Var,St} = new_var(St0),
@@ -1267,9 +1262,9 @@ 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.
%%%
@@ -1492,6 +1487,18 @@ force_novars(#ibinary{}=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
@@ -1566,90 +1573,109 @@ 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) ->
- annotate_cons(lineno_anno(L, St), pattern(H, St), pattern(T, St), 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) ->
- annotate_tuple(record_anno(L, St), pattern_list(Ps, St), St);
-pattern({map,L,Ps}, St) ->
- #c_map{anno=lineno_anno(L, St), es=pattern_map_pairs(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 (dict is needed)
- %% pattern all pairs
- {CMapPairs, Kdb} = lists:mapfoldl(fun
- (P,Kdbi) ->
- #c_map_pair{key=Ck,val=Cv} = CMapPair = pattern_map_pair(P,St),
- K = core_lib:literal_value(Ck),
- case dict:find(K,Kdbi) of
- {ok, Vs} ->
- {CMapPair, dict:store(K,[Cv|Vs],Kdbi)};
- _ ->
- {CMapPair, dict:store(K,[Cv],Kdbi)}
+ %% 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}.
+
+%% remove cluddering annotations
+pattern_map_clean_key(#c_literal{val=V}) -> {literal,V};
+pattern_map_clean_key(#c_var{name=V}) -> {var,V}.
+
+pat_alias_map_pairs(Ps1,Ps2) ->
+ Ps = Ps1 ++ Ps2,
+ F = fun(#c_map_pair{key=Ck,val=Cv},Dbi) ->
+ K = pattern_map_clean_key(Ck),
+ case dict:find(K,Dbi) of
+ {ok,Cvs} -> dict:store(K,[Cv|Cvs],Dbi);
+ _ -> dict:store(K,[Cv],Dbi)
end
- end, dict:new(), Ps),
- pattern_alias_map_pairs(CMapPairs,Kdb,dict:new(),St).
-
-pattern_alias_map_pairs([],_,_,_) -> [];
-pattern_alias_map_pairs([#c_map_pair{key=Ck}=Pair|Pairs],Kdb,Kset,St) ->
- %% alias same keys if needed
- K = core_lib:literal_value(Ck),
- case dict:find(K,Kset) of
- {ok,processed} ->
- pattern_alias_map_pairs(Pairs,Kdb,Kset,St);
- _ ->
+ end,
+ Kdb = lists:foldl(F,dict:new(),Ps),
+ pat_alias_map_pairs(Ps,Kdb,sets:new()).
+
+pat_alias_map_pairs([],_,_) -> [];
+pat_alias_map_pairs([#c_map_pair{key=Ck}=Pair|Pairs],Kdb,Set) ->
+ K = pattern_map_clean_key(Ck),
+ case sets:is_element(K,Set) of
+ true ->
+ pat_alias_map_pairs(Pairs,Kdb,Set);
+ false ->
Cvs = dict:fetch(K,Kdb),
- Cv = pattern_alias_map_pair_patterns(Cvs),
- Kset1 = dict:store(K, processed, Kset),
- [Pair#c_map_pair{val=Cv}|pattern_alias_map_pairs(Pairs,Kdb,Kset1,St)]
+ Cv = pat_alias_map_pair_values(Cvs),
+ Set1 = sets:add_element(K,Set),
+ [Pair#c_map_pair{val=Cv}|pat_alias_map_pairs(Pairs,Kdb,Set1)]
end.
-pattern_alias_map_pair_patterns([Cv]) -> Cv;
-pattern_alias_map_pair_patterns([Cv1,Cv2|Cvs]) ->
- pattern_alias_map_pair_patterns([pat_alias(Cv1,Cv2)|Cvs]).
-
-pattern_map_pair({map_field_exact,L,K,V},St) ->
- #c_map_pair{anno=lineno_anno(L, St),
- op=#c_literal{val=exact},
- key=pattern_map_key(K,St),
- val=pattern(V, St)}.
-
-pattern_map_key(K,St) ->
- %% Throws 'nomatch' if the key can't be a literal
- %% this will be a cryptic error message but it is better than nothing
- case expr(K,St) of
- {Key0,[],_} ->
- %% Dialyzer hack redux
- case coalesced_map_key(Key0) of
- {ok,Key1} -> Key1;
- error -> throw(nomatch)
- end;
- _ -> throw(nomatch)
- end.
+pat_alias_map_pair_values([Cv]) -> Cv;
+pat_alias_map_pair_values([Cv1,Cv2|Cvs]) ->
+ pat_alias_map_pair_values([pat_alias(Cv1,Cv2)|Cvs]).
+
+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_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,_,Val,Size,[Type,{unit,Unit}|Flags]}, St) ->
+ {Pval,[],St1} = pattern(Val,St),
+ {Psize,[],_St2} = pattern(Size,St1),
+ #c_bitstr{val=Pval,size=Psize,
unit=#c_literal{val=Unit},
type=#c_literal{val=Type},
flags=#c_literal{val=Flags}}.
@@ -1659,6 +1685,8 @@ pat_segment({bin_element,_,Term,Size,[Type,{unit,Unit}|Flags]}, St) ->
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};
+
+%% alias cons
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}));
@@ -1667,6 +1695,8 @@ pat_alias(#c_literal{anno=A,val=[H|T]}=S, #c_cons{}=Cons) ->
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));
+
+%% alias tuples
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));
@@ -1675,6 +1705,12 @@ pat_alias(#c_literal{anno=Anno,val=T}, #c_tuple{es=Es2}) when is_tuple(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));
+
+%% alias maps
+%% There are no literals in maps patterns (patterns are always abstract)
+pat_alias(#c_map{es=Es1}=M,#c_map{es=Es2}) ->
+ M#c_map{es=pat_alias_map_pairs(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)};
@@ -1697,9 +1733,15 @@ pat_alias_list([A1|A1s], [A2|A2s]) ->
pat_alias_list([], []) -> [];
pat_alias_list(_, _) -> throw(nomatch).
-%% pattern_list([P], State) -> [P].
+%% pattern_list([P], State) -> {[P],Exprs,St}
+
+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}.
-pattern_list(Ps, St) -> [pattern(P, St) || P <- Ps].
%% make_vars([Name]) -> [{Var,Name}].
@@ -1999,9 +2041,14 @@ upattern(#c_tuple{es=Es0}=Tuple, Ks, St0) ->
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},val=V0}=MapPair, Ks, St0) ->
- {V,Vg,Vv,Vu,St1} = upattern(V0, Ks, St0),
- {MapPair#c_map_pair{val=V},Vg,Vv,Vu,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};
@@ -2290,16 +2337,21 @@ record_anno(L, St) when L >= ?REC_OFFSET ->
true ->
[record | lineno_anno(L - ?REC_OFFSET, St)];
false ->
- lineno_anno(L, St)
+ full_anno(L, St)
end;
record_anno(L, St) when L < -?REC_OFFSET ->
case member(dialyzer, St#core.opts) of
true ->
[record | lineno_anno(L + ?REC_OFFSET, St)];
false ->
- lineno_anno(L, St)
+ full_anno(L, St)
end;
record_anno(L, St) ->
+ full_anno(L, St).
+
+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) ->
@@ -2372,8 +2424,6 @@ format_error(nomatch) ->
"pattern cannot possibly match";
format_error(bad_binary) ->
"binary construction will fail because of a type mismatch";
-format_error(bad_map_key) ->
- "map construction will fail because of none literal key (large binaries are not literals)";
format_error(bad_map) ->
"map construction will fail because of a type mismatch".
diff --git a/lib/compiler/src/v3_kernel.erl b/lib/compiler/src/v3_kernel.erl
index 40d2f72b4c..72e7a39333 100644
--- a/lib/compiler/src/v3_kernel.erl
+++ b/lib/compiler/src/v3_kernel.erl
@@ -521,67 +521,82 @@ is_valid_map_src(#k_var{}) -> true;
is_valid_map_src(_) -> false.
map_split_pairs(A, Var, Ces, Sub, St0) ->
- %% two steps
- %% 1. force variables
- %% 2. remove multiples
- Pairs0 = [{Op,K,V} || #c_map_pair{op=#c_literal{val=Op},key=K,val=V} <- Ces],
+ %% 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,[],Sti1} = expr(K0, Sub, Sti0),
- {V,Ep,Sti2} = atomic(V0, Sub, Sti1),
- {[{Op,K,V}|Ops],Ep ++ Espi,Sti2}
+ {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),
-
- case map_group_pairs(Pairs) of
- {Assoc,[]} ->
- Kes = [#k_map_pair{key=K,val=V}||{_,{assoc,K,V}} <- Assoc],
- {#k_map{anno=A,op=assoc,var=Var,es=Kes},Esp,St1};
- {[],Exact} ->
- Kes = [#k_map_pair{key=K,val=V}||{_,{exact,K,V}} <- Exact],
- {#k_map{anno=A,op=exact,var=Var,es=Kes},Esp,St1};
- {Assoc,Exact} ->
- Kes1 = [#k_map_pair{key=K,val=V}||{_,{assoc,K,V}} <- Assoc],
- {Mvar,Em,St2} = force_atomic(#k_map{anno=A,op=assoc,var=Var,es=Kes1},St1),
- Kes2 = [#k_map_pair{key=K,val=V}||{_,{exact,K,V}} <- Exact],
- {#k_map{anno=A,op=exact,var=Mvar,es=Kes2},Esp ++ Em,St2}
-
+ 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.
-%% Group map by Assoc operations and Exact operations
-
-map_group_pairs(Es) ->
- Groups = dict:to_list(map_group_pairs(Es,dict:new())),
- partition(fun({_,{Op,_,_}}) -> Op =:= assoc end, Groups).
-
-map_group_pairs([{assoc,K,V}|Es0],Used0) ->
- Used1 = case map_key_is_used(K,Used0) of
- {ok, {assoc,_,_}} -> map_key_set_used(K,{assoc,K,V},Used0);
- {ok, {exact,_,_}} -> map_key_set_used(K,{exact,K,V},Used0);
- _ -> map_key_set_used(K,{assoc,K,V},Used0)
- end,
- map_group_pairs(Es0,Used1);
-map_group_pairs([{exact,K,V}|Es0],Used0) ->
- Used1 = case map_key_is_used(K,Used0) of
- {ok, {assoc,_,_}} -> map_key_set_used(K,{assoc,K,V},Used0);
- {ok, {exact,_,_}} -> map_key_set_used(K,{exact,K,V},Used0);
- _ -> map_key_set_used(K,{exact,K,V},Used0)
- end,
- map_group_pairs(Es0,Used1);
-map_group_pairs([],Used) ->
- Used.
-
-map_key_set_used(K,How,Used) ->
- dict:store(map_key_clean(K),How,Used).
+map_remove_dup_keys(Es) ->
+ dict:to_list(map_remove_dup_keys(Es, dict:new())).
-map_key_is_used(K,Used) ->
- dict:find(map_key_clean(K),Used).
+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_literal{val=V}) -> {k_literal,V};
-map_key_clean(#k_int{val=V}) -> {k_int,V};
-map_key_clean(#k_float{val=V}) -> {k_float,V};
-map_key_clean(#k_atom{val=V}) -> {k_atom,V};
-map_key_clean(#k_nil{}) -> k_nil.
+%% 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.
@@ -757,23 +772,22 @@ flatten_alias(#c_alias{var=V,pat=P}) ->
flatten_alias(Pat) -> {[],Pat}.
pattern_map_pairs(Ces0, Isub, Osub0, St0) ->
- %% It is assumed that all core keys are literals
- %% It is later assumed that these keys are term sorted
- %% so we need to sort them here
- Ces1 = lists:sort(fun
- (#c_map_pair{key=CkA},#c_map_pair{key=CkB}) ->
- A = core_lib:literal_value(CkA),
- B = core_lib:literal_value(CkB),
- erts_internal:cmp_term(A,B) < 0
- end, Ces0),
%% 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,Osubi1,Sti1} = pattern(Ck, Isub, Osubi0, Sti0),
- {Kv,Osubi2,Sti2} = pattern(Cv, Isub, Osubi1, Sti1),
+ {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}, Ces1),
- {Kes,Osub1,St1}.
+ 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),
@@ -1550,13 +1564,11 @@ arg_val(Arg, C) ->
{set_kanno(S, []),U,T,Fs}
end;
#k_map{op=exact,es=Es} ->
- Keys = [begin
- #k_map_pair{key=#k_literal{val=Key}} = Pair,
- Key
- end || Pair <- Es],
- %% multiple keys may have the same name
- %% do not use ordsets
- lists:sort(fun(A,B) -> erts_internal:cmp_term(A,B) < 0 end, Keys)
+ 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]
@@ -1943,6 +1955,7 @@ 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{}) -> {[],[]};
@@ -1967,8 +1980,10 @@ pat_vars(#k_tuple{es=Es}) ->
pat_list_vars(Es);
pat_vars(#k_map{es=Es}) ->
pat_list_vars(Es);
-pat_vars(#k_map_pair{val=V}) ->
- pat_vars(V).
+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}) ->
diff --git a/lib/compiler/src/v3_kernel.hrl b/lib/compiler/src/v3_kernel.hrl
index ab66445f73..b008285d9f 100644
--- a/lib/compiler/src/v3_kernel.hrl
+++ b/lib/compiler/src/v3_kernel.hrl
@@ -38,7 +38,7 @@
-record(k_nil, {anno=[]}).
-record(k_tuple, {anno=[],es}).
--record(k_map, {anno=[],var,op,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}).
diff --git a/lib/compiler/test/Makefile b/lib/compiler/test/Makefile
index 0b56a49cd6..73d52a48bc 100644
--- a/lib/compiler/test/Makefile
+++ b/lib/compiler/test/Makefile
@@ -11,6 +11,7 @@ MODULES= \
beam_validator_SUITE \
beam_disasm_SUITE \
beam_except_SUITE \
+ beam_utils_SUITE \
bs_bincomp_SUITE \
bs_bit_binaries_SUITE \
bs_construct_SUITE \
@@ -40,6 +41,7 @@ NO_OPT= \
andor \
apply \
beam_except \
+ beam_utils \
bs_construct \
bs_match \
bs_utf \
@@ -59,6 +61,7 @@ NO_OPT= \
INLINE= \
andor \
apply \
+ beam_utils \
bs_bincomp \
bs_bit_binaries \
bs_construct \
@@ -108,7 +111,7 @@ RELSYSDIR = $(RELEASE_PATH)/compiler_test
# ----------------------------------------------------
ERL_MAKE_FLAGS +=
-ERL_COMPILE_FLAGS += -I$(ERL_TOP)/lib/test_server/include +clint
+ERL_COMPILE_FLAGS += -I$(ERL_TOP)/lib/test_server/include +clint +clint0
EBIN = .
diff --git a/lib/compiler/test/andor_SUITE.erl b/lib/compiler/test/andor_SUITE.erl
index b5408ecd8f..22aa19522d 100644
--- a/lib/compiler/test/andor_SUITE.erl
+++ b/lib/compiler/test/andor_SUITE.erl
@@ -33,7 +33,7 @@ all() ->
[{group,p}].
groups() ->
- [{p,test_lib:parallel(),
+ [{p,[parallel],
[t_case,t_and_or,t_andalso,t_orelse,inside,overlap,
combined,in_case,before_and_inside_if]}].
diff --git a/lib/compiler/test/beam_utils_SUITE.erl b/lib/compiler/test/beam_utils_SUITE.erl
new file mode 100644
index 0000000000..d2e24cb5ae
--- /dev/null
+++ b/lib/compiler/test/beam_utils_SUITE.erl
@@ -0,0 +1,236 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 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.
+%%
+%% %CopyrightEnd%
+%%
+-module(beam_utils_SUITE).
+
+-export([all/0,suite/0,groups/0,init_per_suite/1,end_per_suite/1,
+ init_per_group/2,end_per_group/2,
+ apply_fun/1,apply_mf/1,bs_init/1,bs_save/1,
+ is_not_killed/1,is_not_used_at/1,
+ select/1,y_catch/1]).
+-export([id/1]).
+
+suite() -> [{ct_hooks,[ts_install_cth]}].
+
+all() ->
+ test_lib:recompile(?MODULE),
+ [{group,p}].
+
+groups() ->
+ [{p,[parallel],
+ [apply_fun,
+ apply_mf,
+ bs_init,
+ bs_save,
+ is_not_killed,
+ is_not_used_at,
+ select,
+ y_catch
+ ]}].
+
+init_per_suite(Config) ->
+ Config.
+
+end_per_suite(_Config) ->
+ ok.
+
+init_per_group(_GroupName, Config) ->
+ Config.
+
+end_per_group(_GroupName, Config) ->
+ Config.
+
+apply_fun(_Config) ->
+ 3 = do_apply_fun(false, false),
+ 3 = do_apply_fun(false, true),
+ 3 = do_apply_fun(true, false),
+ 2 = do_apply_fun(true, true),
+ ok.
+
+do_apply_fun(X, Y) ->
+ F = fun(I) -> I+1 end,
+ Arg = case X andalso id(Y) of
+ true -> 1;
+ false -> 2
+ end,
+ F(Arg).
+
+apply_mf(_Config) ->
+ ok = do_apply_mf_used({a,b}, ?MODULE, id),
+ error = do_apply_mf_used([a], ?MODULE, id),
+ {'EXIT',{{case_clause,{[],b}},_}} = (catch do_apply_mf_used({[],b}, ?MODULE, id)),
+
+ error = do_apply_mf_killed({error,[a]}, ?MODULE, id),
+ ok = do_apply_mf_killed([b], ?MODULE, id),
+ {'EXIT',{{case_clause,{a,[b]}},_}} = (catch do_apply_mf_killed({a,[b]}, ?MODULE, id)),
+ {'EXIT',{{case_clause,{error,[]}},_}} = (catch do_apply_mf_killed({error,[]}, ?MODULE, id)),
+
+ ok.
+
+do_apply_mf_used(Arg, Mod, Func) ->
+ Res = case id(Arg) of
+ {Decoded,_} when Decoded =/= [] ->
+ ok;
+ List when is_list(List) ->
+ error
+ end,
+ Mod:Func(Res).
+
+do_apply_mf_killed(Arg, Mod, Func) ->
+ Res = case id(Arg) of
+ {Tag,Decoded} when Decoded =/= [], Tag =:= error ->
+ error;
+ List when is_list(List) ->
+ ok
+ end,
+ Mod:Func(Res).
+
+bs_init(_Config) ->
+ <<7>> = do_bs_init_1([?MODULE], 7),
+ error = do_bs_init_1([?MODULE], 0.0),
+ error = do_bs_init_1([?MODULE], -43),
+ error = do_bs_init_1([?MODULE], 42),
+
+ <<>> = do_bs_init_2([]),
+ <<0:32,((1 bsl 32)-1):32>> = do_bs_init_2([0,(1 bsl 32)-1]),
+ {'EXIT',{badarg,_}} = (catch do_bs_init_2([0.5])),
+ {'EXIT',{badarg,_}} = (catch do_bs_init_2([-1])),
+ {'EXIT',{badarg,_}} = (catch do_bs_init_2([1 bsl 32])),
+ ok.
+
+do_bs_init_1([?MODULE], Sz) ->
+ if
+ is_integer(Sz), Sz >= -42, Sz < 42 ->
+ id(<<Sz:8>>);
+ true ->
+ error
+ end.
+
+do_bs_init_2(SigNos) ->
+ << <<SigNo:32>> ||
+ SigNo <- SigNos,
+ (is_integer(SigNo) andalso SigNo >= 0 andalso SigNo < (1 bsl 32)) orelse
+ erlang:error(badarg)
+ >>.
+
+
+bs_save(_Config) ->
+ {a,30,<<>>} = do_bs_save(<<1:1,30:5>>),
+ {b,127,<<>>} = do_bs_save(<<1:1,31:5,0:1,127:7>>),
+ {c,127,<<>>} = do_bs_save(<<1:1,31:5,1:1,127:7>>),
+ {c,127,<<>>} = do_bs_save(<<0:1,31:5,1:1,127:7>>),
+ {d,1024,<<>>} = do_bs_save(<<0:1,31:5>>),
+ ok.
+
+do_bs_save(<<_:1, Tag:5, T/binary>>) when Tag < 31 ->
+ {a,Tag,T};
+do_bs_save(<<1:1, 31:5, 0:1, Tag:7, T/binary>>) ->
+ {b,Tag,T};
+do_bs_save(<<_:1, 31:5, 1:1, Tag:7, T/binary>>) ->
+ {c,Tag,T};
+do_bs_save(<<_:1, 31:5, T/binary>>) ->
+ {d,1024,T}.
+
+is_not_killed(_Config) ->
+ {Pid,Ref} = spawn_monitor(fun() -> exit(banan) end),
+ receive
+ {'DOWN', Ref, process, Pid, banan} ->
+ ok
+ end,
+ receive after 0 -> ok end.
+
+is_not_used_at(_Config) ->
+ {a,b} = do_is_not_used_at(a, [{a,b}]),
+ {a,b} = do_is_not_used_at(a, [x,{a,b}]),
+ {a,b} = do_is_not_used_at(a, [{x,y},{a,b}]),
+ none = do_is_not_used_at(z, [{a,b}]),
+ none = do_is_not_used_at(a, [x]),
+ none = do_is_not_used_at(a, [{x,y}]),
+ ok.
+
+do_is_not_used_at(Key, [P|Ps]) ->
+ if
+ tuple_size(P) >= 1, element(1, P) =:= Key ->
+ P;
+ true ->
+ do_is_not_used_at(Key, Ps)
+ end;
+do_is_not_used_at(_Key, []) -> none.
+
+-record(select, {fixed=false}).
+
+select(_Config) ->
+ a = do_select(#select{}, 0, 0),
+ b = do_select(#select{}, 0, 1),
+ c = do_select(#select{fixed=true}, 0, 0),
+ c = do_select(#select{fixed=true}, 0, 1),
+ ok.
+
+do_select(Head, OldSize, BSize) ->
+ Overwrite0 =
+ if
+ OldSize =:= BSize -> same;
+ true -> true
+ end,
+ Overwrite =
+ if
+ Head#select.fixed =/= false ->
+ false;
+ true ->
+ Overwrite0
+ end,
+ if
+ Overwrite =:= same ->
+ a;
+ Overwrite ->
+ b;
+ true ->
+ c
+ end.
+
+y_catch(_Config) ->
+ ok = try
+ do_y_catch(<<"<?xmlX">>, {state}),
+ failed
+ catch
+ throw:{<<"<?xmlX">>,{state}} ->
+ ok
+ end.
+
+do_y_catch(<<"<?xml",Rest0/binary>> = Bytes, State0) ->
+ {Rest1,State1} =
+ case do_y_catch_1(Rest0, State0) of
+ false ->
+ {Bytes,State0};
+ true ->
+ {_XmlAttributes, R, S} = do_y_catch_2(Rest0),
+ {R,S}
+ end,
+ case catch id({Rest1,State1}) of
+ Other ->
+ throw(Other)
+ end.
+
+do_y_catch_1(<<_,_/binary>>, _) ->
+ false.
+
+do_y_catch_2(_) -> {a,b,c}.
+
+
+%% The identity function.
+id(I) -> I.
diff --git a/lib/compiler/test/beam_validator_SUITE.erl b/lib/compiler/test/beam_validator_SUITE.erl
index 626f89ba7a..27979647c6 100644
--- a/lib/compiler/test/beam_validator_SUITE.erl
+++ b/lib/compiler/test/beam_validator_SUITE.erl
@@ -96,9 +96,16 @@ do_beam_file(F) ->
compiler_bug(Config) when is_list(Config) ->
%% Check that the compiler returns an error if we try to
%% assemble one of the bad '.S' files.
- ?line Data = ?config(data_dir, Config),
- ?line File = filename:join(Data, "stack"),
- ?line error = compile:file(File, [asm,report_errors,binary,time]),
+ Data = ?config(data_dir, Config),
+ File = filename:join(Data, "compiler_bug"),
+ error = compile:file(File, [from_asm,report_errors,time]),
+
+ %% Make sure that the error was reported by
+ %% the beam_validator module.
+ {error,
+ [{"compiler_bug",
+ [{beam_validator,_}]}],
+ []} = compile:file(File, [from_asm,return_errors,time]),
ok.
%% The following code is stupid but it should compile.
diff --git a/lib/compiler/test/beam_validator_SUITE_data/compiler_bug.S b/lib/compiler/test/beam_validator_SUITE_data/compiler_bug.S
new file mode 100644
index 0000000000..ba27bf5c47
--- /dev/null
+++ b/lib/compiler/test/beam_validator_SUITE_data/compiler_bug.S
@@ -0,0 +1,38 @@
+{module, compiler_bug}. %% version = 0
+
+{exports, [{module_info,0},{module_info,1},{sum,2}]}.
+
+{attributes, []}.
+
+{labels, 7}.
+
+
+{function, sum, 2, 2}.
+ {label,1}.
+ {line,[{location,"compiler_bug.erl",4}]}.
+ {func_info,{atom,compiler_bug},{atom,sum},2}.
+ {label,2}.
+ {line,[{location,"compiler_bug.erl",5}]}.
+ {gc_bif,'+',{f,0},2,[{y,0},{y,1}],{x,0}}.
+ return.
+
+
+{function, module_info, 0, 4}.
+ {label,3}.
+ {line,[]}.
+ {func_info,{atom,compiler_bug},{atom,module_info},0}.
+ {label,4}.
+ {move,{atom,compiler_bug},{x,0}}.
+ {line,[]}.
+ {call_ext_only,1,{extfunc,erlang,get_module_info,1}}.
+
+
+{function, module_info, 1, 6}.
+ {label,5}.
+ {line,[]}.
+ {func_info,{atom,compiler_bug},{atom,module_info},1}.
+ {label,6}.
+ {move,{x,0},{x,1}}.
+ {move,{atom,compiler_bug},{x,0}}.
+ {line,[]}.
+ {call_ext_only,2,{extfunc,erlang,get_module_info,2}}.
diff --git a/lib/compiler/test/bs_bit_binaries_SUITE.erl b/lib/compiler/test/bs_bit_binaries_SUITE.erl
index 8609a490f5..2433e7621e 100644
--- a/lib/compiler/test/bs_bit_binaries_SUITE.erl
+++ b/lib/compiler/test/bs_bit_binaries_SUITE.erl
@@ -37,7 +37,7 @@ all() ->
[{group,p}].
groups() ->
- [{p,test_lib:parallel(),
+ [{p,[parallel],
[misc,horrid_match,test_bitstr,test_bit_size,
asymmetric_tests,big_asymmetric_tests,
binary_to_and_from_list,big_binary_to_and_from_list,
diff --git a/lib/compiler/test/bs_construct_SUITE.erl b/lib/compiler/test/bs_construct_SUITE.erl
index ce39de2a82..9df874c387 100644
--- a/lib/compiler/test/bs_construct_SUITE.erl
+++ b/lib/compiler/test/bs_construct_SUITE.erl
@@ -39,7 +39,7 @@ all() ->
[{group,p}].
groups() ->
- [{p,test_lib:parallel(),
+ [{p,[parallel],
[two,test1,fail,float_bin,in_guard,in_catch,
nasty_literals,side_effect,opt,otp_7556,float_arith,
otp_8054]}].
diff --git a/lib/compiler/test/bs_match_SUITE.erl b/lib/compiler/test/bs_match_SUITE.erl
index 10e3451e8f..f7af56afcc 100644
--- a/lib/compiler/test/bs_match_SUITE.erl
+++ b/lib/compiler/test/bs_match_SUITE.erl
@@ -48,7 +48,7 @@ all() ->
[{group,p}].
groups() ->
- [{p,test_lib:parallel(),
+ [{p,[parallel],
[fun_shadow,int_float,otp_5269,null_fields,wiger,
bin_tail,save_restore,shadowed_size_var,
partitioned_bs_match,function_clause,unit,
@@ -368,11 +368,20 @@ partitioned_bs_match_3(Var, <<_>>) -> Var;
partitioned_bs_match_3(1, 2) -> ok.
function_clause(Config) when is_list(Config) ->
- ?line ok = function_clause_1(<<0,7,0,7,42>>),
- ?line fc(function_clause_1, [<<0,1,2,3>>],
- catch function_clause_1(<<0,1,2,3>>)),
- ?line fc(function_clause_1, [<<0,1,2,3>>],
- catch function_clause_1(<<0,7,0,1,2,3>>)),
+ ok = function_clause_1(<<0,7,0,7,42>>),
+ fc(function_clause_1, [<<0,1,2,3>>],
+ catch function_clause_1(<<0,1,2,3>>)),
+ fc(function_clause_1, [<<0,1,2,3>>],
+ catch function_clause_1(<<0,7,0,1,2,3>>)),
+
+ ok = function_clause_2(<<0,7,0,7,42>>),
+ ok = function_clause_2(<<255>>),
+ ok = function_clause_2(<<13:4>>),
+ fc(function_clause_2, [<<0,1,2,3>>],
+ catch function_clause_2(<<0,1,2,3>>)),
+ fc(function_clause_2, [<<0,1,2,3>>],
+ catch function_clause_2(<<0,7,0,1,2,3>>)),
+
ok.
function_clause_1(<<0:8,7:8,T/binary>>) ->
@@ -380,6 +389,13 @@ function_clause_1(<<0:8,7:8,T/binary>>) ->
function_clause_1(<<_:8>>) ->
ok.
+function_clause_2(<<0:8,7:8,T/binary>>) ->
+ function_clause_2(T);
+function_clause_2(<<_:8>>) ->
+ ok;
+function_clause_2(<<_:4>>) ->
+ ok.
+
unit(Config) when is_list(Config) ->
?line 42 = peek1(<<42>>),
?line 43 = peek1(<<43,1,2>>),
diff --git a/lib/compiler/test/compilation_SUITE.erl b/lib/compiler/test/compilation_SUITE.erl
index f7b1dbdddf..296774e083 100644
--- a/lib/compiler/test/compilation_SUITE.erl
+++ b/lib/compiler/test/compilation_SUITE.erl
@@ -436,7 +436,7 @@ self_compile_1(Config, Prefix, Opts) ->
%% Compile the compiler. (In this node to get better coverage.)
?line CompA = make_compiler_dir(Priv, Prefix++"compiler_a"),
?line VsnA = Version ++ ".0",
- ?line compile_compiler(compiler_src(), CompA, VsnA, [clint|Opts]),
+ compile_compiler(compiler_src(), CompA, VsnA, [clint0,clint|Opts]),
%% Compile the compiler again using the newly compiled compiler.
%% (In another node because reloading the compiler would disturb cover.)
@@ -611,12 +611,10 @@ otp_7345(Config) when is_list(Config) ->
otp_7345(ObjRef, _RdEnv, Args) ->
Cid = ObjRef#contextId.cid,
- _DpRef =
- #dpRef{cid = Cid,
+ _ = #dpRef{cid = Cid,
ms_device_context_id = cid_id,
tlli = #ptmsi{value = 0}},
- _QosProfile =
- #qosProfileBssgp{peak_bit_rate_msb = 0,
+ _ = #qosProfileBssgp{peak_bit_rate_msb = 0,
peak_bit_rate_lsb = 80,
t_a_precedence = 49},
[Cpdu|_] = Args,
diff --git a/lib/compiler/test/compile_SUITE.erl b/lib/compiler/test/compile_SUITE.erl
index 8cb7d1b55b..1c96abe017 100644
--- a/lib/compiler/test/compile_SUITE.erl
+++ b/lib/compiler/test/compile_SUITE.erl
@@ -30,7 +30,7 @@
other_output/1, encrypted_abstr/1,
bad_record_use1/1, bad_record_use2/1, strict_record/1,
missing_testheap/1, cover/1, env/1, core/1, asm/1,
- sys_pre_attributes/1]).
+ sys_pre_attributes/1, dialyzer/1]).
-export([init/3]).
@@ -47,7 +47,7 @@ all() ->
other_output, encrypted_abstr,
{group, bad_record_use}, strict_record,
missing_testheap, cover, env, core, asm,
- sys_pre_attributes].
+ sys_pre_attributes, dialyzer].
groups() ->
[{bad_record_use, [],
@@ -365,7 +365,7 @@ listings_big(Config) when is_list(Config) ->
?line do_listing(Big, TargetDir, dkern, ".kernel"),
?line Target = filename:join(TargetDir, big),
- ?line {ok,big} = compile:file(Target, [asm,{outdir,TargetDir}]),
+ {ok,big} = compile:file(Target, [from_asm,{outdir,TargetDir}]),
%% Cleanup.
?line ok = file:delete(Target ++ ".beam"),
@@ -748,42 +748,65 @@ env_1(Simple, Target) ->
%% compile the generated Core Erlang files.
core(Config) when is_list(Config) ->
- ?line Dog = test_server:timetrap(test_server:minutes(5)),
- ?line PrivDir = ?config(priv_dir, Config),
- ?line Outdir = filename:join(PrivDir, "core"),
- ?line ok = file:make_dir(Outdir),
+ PrivDir = ?config(priv_dir, Config),
+ Outdir = filename:join(PrivDir, "core"),
+ ok = file:make_dir(Outdir),
- ?line Wc = filename:join(filename:dirname(code:which(?MODULE)), "*.beam"),
- ?line TestBeams = filelib:wildcard(Wc),
- ?line Abstr = [begin {ok,{Mod,[{abstract_code,
+ Wc = filename:join(filename:dirname(code:which(?MODULE)), "*.beam"),
+ TestBeams = filelib:wildcard(Wc),
+ Abstr = [begin {ok,{Mod,[{abstract_code,
{raw_abstract_v1,Abstr}}]}} =
beam_lib:chunks(Beam, [abstract_code]),
{Mod,Abstr} end || Beam <- TestBeams],
- ?line Res = test_lib:p_run(fun(F) -> do_core(F, Outdir) end, Abstr),
- ?line test_server:timetrap_cancel(Dog),
- Res.
-
+ test_lib:p_run(fun(F) -> do_core(F, Outdir) end, Abstr).
do_core({M,A}, Outdir) ->
try
- {ok,M,Core} = compile:forms(A, [to_core,report]),
- CoreFile = filename:join(Outdir, atom_to_list(M)++".core"),
- CorePP = core_pp:format(Core),
- ok = file:write_file(CoreFile, CorePP),
- case compile:file(CoreFile, [clint,from_core,binary]) of
- {ok,M,_} ->
- ok = file:delete(CoreFile);
- Other ->
- io:format("*** core_lint failure '~p' for ~s\n",
- [Other,CoreFile]),
- error
- end
- catch Class:Error ->
+ do_core_1(M, A, Outdir)
+ catch
+ throw:{error,Error} ->
+ io:format("*** compilation failure '~p' for module ~s\n",
+ [Error,M]),
+ error;
+ Class:Error ->
io:format("~p: ~p ~p\n~p\n",
[M,Class,Error,erlang:get_stacktrace()]),
error
end.
+do_core_1(M, A, Outdir) ->
+ {ok,M,Core0} = compile:forms(A, [to_core]),
+ CoreFile = filename:join(Outdir, atom_to_list(M)++".core"),
+ CorePP = core_pp:format(Core0),
+ ok = file:write_file(CoreFile, CorePP),
+
+ %% Parse the .core file and return the result as Core Erlang Terms.
+ Core = case compile:file(CoreFile, [report_errors,from_core,no_copt,to_core,binary]) of
+ {ok,M,Core1} -> Core1;
+ Other -> throw({error,Other})
+ end,
+ ok = file:delete(CoreFile),
+
+ %% Compile as usual (including optimizations).
+ compile_forms(Core, [clint,from_core,binary]),
+
+ %% Don't optimize to test that we are not dependent
+ %% on the Core Erlang optmimization passes.
+ %% (Example of a previous bug: The core_parse pass
+ %% would not turn map literals into #c_literal{}
+ %% records; if sys_core_fold was run it would fix
+ %% that; if sys_core_fold was not run v3_kernel would
+ %% crash.)
+ compile_forms(Core, [clint,from_core,no_copt,binary]),
+
+ ok.
+
+compile_forms(Forms, Opts) ->
+ case compile:forms(Forms, [report_errors|Opts]) of
+ {ok,[],_} -> ok;
+ Other -> throw({error,Other})
+ end.
+
%% Compile to Beam assembly language (.S) and then try to
%% run .S through the compiler again.
@@ -854,6 +877,20 @@ sys_pre_attributes(Config) ->
[report,verbose]),
ok.
+%% Test the dialyzer option to cover more code.
+dialyzer(Config) ->
+ Priv = ?config(priv_dir, Config),
+ file:set_cwd(?config(data_dir, Config)),
+ Opts = [{outdir,Priv},report_errors],
+ M = dialyzer_test,
+ {ok,M} = c:c(M, [dialyzer|Opts]),
+ [{a,b,c}] = M:M(),
+
+ %% Cover huge line numbers without the 'dialyzer' option.
+ {ok,M} = c:c(M, Opts),
+ [{a,b,c}] = M:M(),
+ ok.
+
%%%
%%% Utilities.
%%%
diff --git a/lib/compiler/test/compile_SUITE_data/dialyzer_test.erl b/lib/compiler/test/compile_SUITE_data/dialyzer_test.erl
new file mode 100644
index 0000000000..ed65ff9c43
--- /dev/null
+++ b/lib/compiler/test/compile_SUITE_data/dialyzer_test.erl
@@ -0,0 +1,39 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 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.
+%%
+%% %CopyrightEnd%
+%%
+
+-module(dialyzer_test).
+-export([?MODULE/0,turtle/0,test/1,huge/1]).
+
+-record(turtle, {a,b,c}).
+-record(tortoise, {a,b,c}).
+
+?MODULE() ->
+ [{a,b,c}].
+
+turtle() ->
+ #turtle{a=1,b=2,c=3}.
+
+test(T) ->
+ {T#tortoise.a,T#tortoise.b}.
+
+-file("dialyzer_test", 100000000).
+
+huge(X) ->
+ #turtle{a=42,b=100,c=511},
+ X#tortoise.a.
diff --git a/lib/compiler/test/core_SUITE_data/map_core_test.core b/lib/compiler/test/core_SUITE_data/map_core_test.core
index 2aa853d450..a75f6cf24f 100644
--- a/lib/compiler/test/core_SUITE_data/map_core_test.core
+++ b/lib/compiler/test/core_SUITE_data/map_core_test.core
@@ -7,11 +7,11 @@ module 'map_core_test' ['map_core_test'/0,
fun () ->
let <_cor0> =
%% Line 15
- ~{::<'check','ok'>,::<1337,#{#<104>(8,1,'integer',['unsigned'|['big']]),
+ ~{'check'=>'ok',1337=>#{#<104>(8,1,'integer',['unsigned'|['big']]),
#<101>(8,1,'integer',['unsigned'|['big']]),
#<108>(8,1,'integer',['unsigned'|['big']]),
#<108>(8,1,'integer',['unsigned'|['big']]),
- #<111>(8,1,'integer',['unsigned'|['big']])}#>,::<'val',0>}~
+ #<111>(8,1,'integer',['unsigned'|['big']])}#,'val'=>0}~
in let <M> =
%% Line 15
apply 'id'/1
@@ -23,7 +23,7 @@ module 'map_core_test' ['map_core_test'/0,
in %% Line 16
case apply 'call'/2
(M, _cor2) of
- <~{~<1337,#{#<104>(8,1,'integer',['unsigned'|['big']]),
+ <~{1337:=#{#<104>(8,1,'integer',['unsigned'|['big']]),
#<101>(8,1,'integer',['unsigned'|['big']]),
#<108>(8,1,'integer',['unsigned'|['big']]),
#<108>(8,1,'integer',['unsigned'|['big']]),
@@ -39,7 +39,7 @@ module 'map_core_test' ['map_core_test'/0,
#<32>(8,1,'integer',['unsigned'|['big']]),
#<53>(8,1,'integer',['unsigned'|['big']]),
#<32>(8,1,'integer',['unsigned'|['big']]),
- #<54>(8,1,'integer',['unsigned'|['big']])}#>,~<'check','ok'>,~<'val',21>}~> when 'true' ->
+ #<54>(8,1,'integer',['unsigned'|['big']])}#,'check':='ok','val':=21}~> when 'true' ->
%% Line 17
'ok'
( <_cor3> when 'true' ->
@@ -51,7 +51,7 @@ module 'map_core_test' ['map_core_test'/0,
%% Line 20
fun (_cor1,_cor0) ->
case <_cor1,_cor0> of
- <M = ~{~<1337,Bin>,~<'check',_cor8>,~<'val',Val>}~,[V|Vs]> when 'true' ->
+ <M = ~{1337:=Bin,'check':=_cor8,'val':=Val}~,[V|Vs]> when 'true' ->
let <_cor3> =
%% Line 21
call 'erlang':'+'
@@ -67,7 +67,7 @@ module 'map_core_test' ['map_core_test'/0,
(Val, V)
in let <_cor5> =
%% Line 21
- ~{~<1337,_cor4>,~<'val',_cor2>|M}~
+ ~{1337:=_cor4,'val':=_cor2|M}~
in %% Line 21
apply 'call'/2
(_cor5, Vs)
diff --git a/lib/compiler/test/core_fold_SUITE.erl b/lib/compiler/test/core_fold_SUITE.erl
index 2de17e7653..40a5ba2b17 100644
--- a/lib/compiler/test/core_fold_SUITE.erl
+++ b/lib/compiler/test/core_fold_SUITE.erl
@@ -23,7 +23,8 @@
t_element/1,setelement/1,t_length/1,append/1,t_apply/1,bifs/1,
eq/1,nested_call_in_case/1,guard_try_catch/1,coverage/1,
unused_multiple_values_error/1,unused_multiple_values/1,
- multiple_aliases/1,redundant_boolean_clauses/1,mixed_matching_clauses/1]).
+ multiple_aliases/1,redundant_boolean_clauses/1,
+ mixed_matching_clauses/1,unnecessary_building/1]).
-export([foo/0,foo/1,foo/2,foo/3]).
@@ -36,11 +37,12 @@ all() ->
[{group,p}].
groups() ->
- [{p,test_lib:parallel(),
+ [{p,[parallel],
[t_element,setelement,t_length,append,t_apply,bifs,
eq,nested_call_in_case,guard_try_catch,coverage,
unused_multiple_values_error,unused_multiple_values,
- multiple_aliases,redundant_boolean_clauses,mixed_matching_clauses]}].
+ multiple_aliases,redundant_boolean_clauses,
+ mixed_matching_clauses,unnecessary_building]}].
init_per_suite(Config) ->
@@ -252,6 +254,8 @@ do_guard_try_catch(K, V) ->
false
end.
+-record(cover_opt_guard_try, {list=[]}).
+
coverage(Config) when is_list(Config) ->
?line {'EXIT',{{case_clause,{a,b,c}},_}} =
(catch cover_will_match_list_type({a,b,c})),
@@ -261,6 +265,9 @@ coverage(Config) when is_list(Config) ->
?line error = cover_will_match_lit_list(),
{ok,[a]} = cover_is_safe_bool_expr(a),
+ ok = cover_opt_guard_try(#cover_opt_guard_try{list=[a]}),
+ error = cover_opt_guard_try(#cover_opt_guard_try{list=[]}),
+
%% Make sure that we don't attempt to make literals
%% out of pids. (Putting a pid into a #c_literal{}
%% would crash later compiler passes.)
@@ -314,6 +321,14 @@ cover_is_safe_bool_expr(X) ->
false
end.
+cover_opt_guard_try(Msg) ->
+ if
+ length(Msg#cover_opt_guard_try.list) =/= 1 ->
+ error;
+ true ->
+ ok
+ end.
+
bsm_an_inlined(<<_:8>>, _) -> ok;
bsm_an_inlined(_, _) -> error.
@@ -400,4 +415,29 @@ mixed_matching_clauses(Config) when is_list(Config) ->
end,
ok.
+unnecessary_building(Config) when is_list(Config) ->
+ Term1 = do_unnecessary_building_1(test_lib:id(a)),
+ [{a,a},{a,a}] = Term1,
+ 7 = erts_debug:size(Term1),
+
+ %% The Input term should not be rebuilt (thus, it should
+ %% only be counted once in the size of the combined term).
+ Input = test_lib:id({a,b,c}),
+ Term2 = test_lib:id(do_unnecessary_building_2(Input)),
+ {b,[{a,b,c},none],x} = Term2,
+ 4+4+4+2 = erts_debug:size([Term2|Input]),
+
+ ok.
+
+do_unnecessary_building_1(S) ->
+ %% The tuple must only be built once.
+ F0 = F1 = {S,S},
+ [F0,F1].
+
+do_unnecessary_building_2({a,_,_}=T) ->
+ %% The T term should not be rebuilt.
+ {b,
+ [_,_] = [T,none],
+ x}.
+
id(I) -> I.
diff --git a/lib/compiler/test/error_SUITE.erl b/lib/compiler/test/error_SUITE.erl
index bd877bb528..0d23f12fb5 100644
--- a/lib/compiler/test/error_SUITE.erl
+++ b/lib/compiler/test/error_SUITE.erl
@@ -23,7 +23,7 @@
-export([all/0, suite/0,groups/0,init_per_suite/1, end_per_suite/1,
init_per_group/2,end_per_group/2,
head_mismatch_line/1,warnings_as_errors/1, bif_clashes/1,
- transforms/1,forbidden_maps/1,bad_utf8/1]).
+ transforms/1,maps_warnings/1,bad_utf8/1]).
%% Used by transforms/1 test case.
-export([parse_transform/2]).
@@ -37,7 +37,7 @@ all() ->
groups() ->
[{p,test_lib:parallel(),
[head_mismatch_line,warnings_as_errors,bif_clashes,
- transforms,forbidden_maps,bad_utf8]}].
+ transforms,maps_warnings,bad_utf8]}].
init_per_suite(Config) ->
Config.
@@ -241,17 +241,30 @@ parse_transform(_, _) ->
error(too_bad).
-forbidden_maps(Config) when is_list(Config) ->
- Ts1 = [{map_illegal_use_of_pattern,
+maps_warnings(Config) when is_list(Config) ->
+ Ts1 = [{map_ok_use_of_pattern,
<<"
- -export([t/0]).
+ -export([t/1]).
+ t(K) ->
+ #{K := 1 = V} = id(#{<<\"hi all\">> => 1}),
+ V.
+ id(I) -> I.
+ ">>,
+ [return],
+ []},
+ {map_illegal_use_of_pattern,
+ <<"
+ -export([t/0,t/2]).
+ t(K,#{ K := V }) -> V.
t() ->
V = 32,
#{<<\"hi\",V,\"all\">> := 1} = id(#{<<\"hi all\">> => 1}).
id(I) -> I.
">>,
[return],
- {error,[{5,erl_lint,{illegal_map_key_variable,'V'}}], []}}],
+ {error,[{3,erl_lint,{unbound_var,'K'}},
+ {6,erl_lint,illegal_map_key}],[]}}
+ ],
[] = run2(Config, Ts1),
ok.
diff --git a/lib/compiler/test/float_SUITE.erl b/lib/compiler/test/float_SUITE.erl
index afc04fd440..fb8da37f4f 100644
--- a/lib/compiler/test/float_SUITE.erl
+++ b/lib/compiler/test/float_SUITE.erl
@@ -118,6 +118,7 @@ math_functions(Config) when is_list(Config) ->
?line 0.0 = math:sinh(0),
?line 1.0 = math:cosh(0),
?line 0.0 = math:tanh(0),
+ 1.0 = math:log2(2),
?line 1.0 = math:log10(10),
?line -1.0 = math:cos(math:pi()),
?line 1.0 = math:exp(0),
@@ -136,6 +137,7 @@ math_functions(Config) when is_list(Config) ->
?line 0.0 = math:sinh(id(0)),
?line 1.0 = math:cosh(id(0)),
?line 0.0 = math:tanh(id(0)),
+ 1.0 = math:log2(id(2)),
?line 1.0 = math:log10(id(10)),
?line 1.0 = math:exp(id(0)),
?line 0.0 = math:log(id(1)),
diff --git a/lib/compiler/test/guard_SUITE.erl b/lib/compiler/test/guard_SUITE.erl
index 34bfdeb1e5..8db47ffa40 100644
--- a/lib/compiler/test/guard_SUITE.erl
+++ b/lib/compiler/test/guard_SUITE.erl
@@ -30,7 +30,7 @@
old_guard_tests/1,
build_in_guard/1,gbif/1,
t_is_boolean/1,is_function_2/1,
- tricky/1,rel_ops/1,literal_type_tests/1,
+ tricky/1,rel_ops/1,rel_op_combinations/1,literal_type_tests/1,
basic_andalso_orelse/1,traverse_dcd/1,
check_qlc_hrl/1,andalso_semi/1,t_tuple_size/1,binary_part/1,
bad_constants/1,bad_guards/1]).
@@ -42,12 +42,13 @@ all() ->
[{group,p}].
groups() ->
- [{p,test_lib:parallel(),
+ [{p,[parallel],
[misc,const_cond,basic_not,complex_not,nested_nots,
semicolon,complex_semicolon,comma,or_guard,
more_or_guards,complex_or_guards,and_guard,xor_guard,
more_xor_guards,build_in_guard,old_guard_tests,gbif,
- t_is_boolean,is_function_2,tricky,rel_ops,
+ t_is_boolean,is_function_2,tricky,
+ rel_ops,rel_op_combinations,
literal_type_tests,basic_andalso_orelse,traverse_dcd,
check_qlc_hrl,andalso_semi,t_tuple_size,binary_part,
bad_constants,bad_guards]}].
@@ -330,7 +331,15 @@ complex_semicolon(Config) when is_list(Config) ->
?line ok = csemi6({a,b}, 0),
?line ok = csemi6({}, 3),
?line ok = csemi6({a,b,c}, 3),
-
+
+ %% 7
+ error = csemi7(#{a=>1}, 1, 0),
+ error = csemi7(<<>>, 1, 0),
+ ok = csemi7(#{a=>1}, 3, 0),
+ ok = csemi7(#{a=>1}, 0, 3),
+ ok = csemi7(#{a=>1}, 3, 3),
+ ok = csemi7(#{a=>1, b=>3}, 0, 0),
+
ok.
csemi1(Type, Val) when is_list(Val), Type == float;
@@ -442,6 +451,9 @@ csemi5(_, _) -> error.
csemi6(A, B) when hd([tuple_size(A)]) > 1; abs(B) > 2 -> ok;
csemi6(_, _) -> error.
+csemi7(A, B, C) when A#{a:=B} > #{a=>1}; abs(C) > 2 -> ok;
+csemi7(_, _, _) -> error.
+
comma(Config) when is_list(Config) ->
%% ',' combinations of literal true/false.
@@ -1122,6 +1134,231 @@ rel_ops(Config) when is_list(Config) ->
-undef(TestOp).
+rel_op_combinations(Config) when is_list(Config) ->
+ Digits0 = lists:seq(16#0030, 16#0039) ++
+ lists:seq(16#0660, 16#0669) ++
+ lists:seq(16#06F0, 16#06F9),
+ Digits = gb_sets:from_list(Digits0),
+ rel_op_combinations_1(16#0700, Digits),
+
+ BrokenRange0 = lists:seq(3, 5) ++
+ lists:seq(10, 12) ++ lists:seq(14, 20),
+ BrokenRange = gb_sets:from_list(BrokenRange0),
+ rel_op_combinations_2(30, BrokenRange),
+
+ Red0 = [{I,2*I} || I <- lists:seq(0, 50)] ++
+ [{I,5*I} || I <- lists:seq(51, 80)],
+ Red = gb_trees:from_orddict(Red0),
+ rel_op_combinations_3(100, Red).
+
+rel_op_combinations_1(0, _) ->
+ ok;
+rel_op_combinations_1(N, Digits) ->
+ Bool = gb_sets:is_member(N, Digits),
+ Bool = is_digit_1(N),
+ Bool = is_digit_2(N),
+ Bool = is_digit_3(N),
+ Bool = is_digit_4(N),
+ Bool = is_digit_5(N),
+ Bool = is_digit_6(N),
+ Bool = is_digit_7(N),
+ Bool = is_digit_8(N),
+ rel_op_combinations_1(N-1, Digits).
+
+is_digit_1(X) when 16#0660 =< X, X =< 16#0669 -> true;
+is_digit_1(X) when 16#0030 =< X, X =< 16#0039 -> true;
+is_digit_1(X) when 16#06F0 =< X, X =< 16#06F9 -> true;
+is_digit_1(_) -> false.
+
+is_digit_2(X) when (16#0030-1) < X, X =< 16#0039 -> true;
+is_digit_2(X) when (16#0660-1) < X, X =< 16#0669 -> true;
+is_digit_2(X) when (16#06F0-1) < X, X =< 16#06F9 -> true;
+is_digit_2(_) -> false.
+
+is_digit_3(X) when 16#0660 =< X, X < (16#0669+1) -> true;
+is_digit_3(X) when 16#0030 =< X, X < (16#0039+1) -> true;
+is_digit_3(X) when 16#06F0 =< X, X < (16#06F9+1) -> true;
+is_digit_3(_) -> false.
+
+is_digit_4(X) when (16#0660-1) < X, X < (16#0669+1) -> true;
+is_digit_4(X) when (16#0030-1) < X, X < (16#0039+1) -> true;
+is_digit_4(X) when (16#06F0-1) < X, X < (16#06F9+1) -> true;
+is_digit_4(_) -> false.
+
+is_digit_5(X) when X >= 16#0660, X =< 16#0669 -> true;
+is_digit_5(X) when X >= 16#0030, X =< 16#0039 -> true;
+is_digit_5(X) when X >= 16#06F0, X =< 16#06F9 -> true;
+is_digit_5(_) -> false.
+
+is_digit_6(X) when X > (16#0660-1), X =< 16#0669 -> true;
+is_digit_6(X) when X > (16#0030-1), X =< 16#0039 -> true;
+is_digit_6(X) when X > (16#06F0-1), X =< 16#06F9 -> true;
+is_digit_6(_) -> false.
+
+is_digit_7(X) when 16#0660 =< X, X =< 16#0669 -> true;
+is_digit_7(X) when 16#0030 =< X, X =< 16#003A, X =/= 16#003A -> true;
+is_digit_7(X) when 16#06F0 =< X, X =< 16#06F9 -> true;
+is_digit_7(_) -> false.
+
+is_digit_8(X) when X =< 16#0039, X > (16#0030-1) -> true;
+is_digit_8(X) when X =< 16#06F9, X > (16#06F0-1) -> true;
+is_digit_8(X) when X =< 16#0669, X > (16#0660-1) -> true;
+is_digit_8(16#0670) -> false;
+is_digit_8(_) -> false.
+
+rel_op_combinations_2(0, _) ->
+ ok;
+rel_op_combinations_2(N, Range) ->
+ Bool = gb_sets:is_member(N, Range),
+ Bool = broken_range_1(N),
+ Bool = broken_range_2(N),
+ Bool = broken_range_3(N),
+ Bool = broken_range_4(N),
+ Bool = broken_range_5(N),
+ Bool = broken_range_6(N),
+ Bool = broken_range_7(N),
+ Bool = broken_range_8(N),
+ Bool = broken_range_9(N),
+ Bool = broken_range_10(N),
+ Bool = broken_range_11(N),
+ Bool = broken_range_12(N),
+ Bool = broken_range_13(N),
+ rel_op_combinations_2(N-1, Range).
+
+broken_range_1(X) when X >= 10, X =< 20, X =/= 13 -> true;
+broken_range_1(X) when X >= 3, X =< 5 -> true;
+broken_range_1(_) -> false.
+
+broken_range_2(X) when X >= 10, X =< 12 -> true;
+broken_range_2(X) when X >= 14, X =< 20 -> true;
+broken_range_2(X) when X >= 3, X =< 5 -> true;
+broken_range_2(_) -> false.
+
+broken_range_3(X) when X >= 10, X =< 12 -> true;
+broken_range_3(X) when X >= 14, X < 21 -> true;
+broken_range_3(3) -> true;
+broken_range_3(4) -> true;
+broken_range_3(5) -> true;
+broken_range_3(_) -> false.
+
+broken_range_4(X) when X =< 5, X >= 3 -> true;
+broken_range_4(X) when X >= 10, X =< 20, X =/= 13 -> true;
+broken_range_4(X) when X =< 100 -> false;
+broken_range_4(_) -> false.
+
+broken_range_5(X) when X >= 10, X =< 20, X =/= 13 -> true;
+broken_range_5(X) when X > 2, X =< 5 -> true;
+broken_range_5(_) -> false.
+
+broken_range_6(X) when X >= 10, X =< 20, X =/= 13 -> true;
+broken_range_6(X) when X > 2, X < 6 -> true;
+broken_range_6(_) -> false.
+
+broken_range_7(X) when X > 2, X < 6 -> true;
+broken_range_7(X) when X >= 10, X =< 20, X =/= 13 -> true;
+broken_range_7(X) when X > 30 -> false;
+broken_range_7(_) -> false.
+
+broken_range_8(X) when X >= 10, X =< 20, X =/= 13 -> true;
+broken_range_8(X) when X =:= 3 -> true;
+broken_range_8(X) when X >= 3, X =< 5 -> true;
+broken_range_8(_) -> false.
+
+broken_range_9(X) when X >= 10, X =< 20, X =/= 13 -> true;
+broken_range_9(X) when X =:= 13 -> false;
+broken_range_9(X) when X >= 3, X =< 5 -> true;
+broken_range_9(_) -> false.
+
+broken_range_10(X) when X >= 3, X =< 5 -> true;
+broken_range_10(X) when X >= 10, X =< 20, X =/= 13 -> true;
+broken_range_10(X) when X =/= 13 -> false;
+broken_range_10(_) -> false.
+
+broken_range_11(X) when X >= 10, X =< 20, X =/= 13 -> true;
+broken_range_11(X) when is_tuple(X), X =:= 10 -> true;
+broken_range_11(X) when X >= 3, X =< 5 -> true;
+broken_range_11(_) -> false.
+
+broken_range_12(X) when X >= 3, X =< 5 -> true;
+broken_range_12(X) when X >= 10, X =< 20, X =/= 13 -> true;
+broken_range_12(X) when X < 30, X > 20 -> false;
+broken_range_12(_) -> false.
+
+broken_range_13(X) when X >= 10, X =< 20, 13 =/= X -> true;
+broken_range_13(X) when X >= 3, X =< 5 -> true;
+broken_range_13(_) -> false.
+
+rel_op_combinations_3(0, _) ->
+ ok;
+rel_op_combinations_3(N, Red) ->
+ Val = case gb_trees:lookup(N, Red) of
+ none -> none;
+ {value,V} -> V
+ end,
+ Val = redundant_1(N),
+ Val = redundant_2(N),
+ Val = redundant_3(N),
+ Val = redundant_4(N),
+ Val = redundant_5(N),
+ Val = redundant_6(N),
+ Val = redundant_7(N),
+ Val = redundant_8(N),
+ Val = redundant_9(N),
+ Val = redundant_10(N),
+ Val = redundant_11(N),
+ rel_op_combinations_3(N-1, Red).
+
+redundant_1(X) when X >= 51, X =< 80 -> 5*X;
+redundant_1(X) when X < 51 -> 2*X;
+redundant_1(_) -> none.
+
+redundant_2(X) when X < 51 -> 2*X;
+redundant_2(X) when X >= 51, X =< 80 -> 5*X;
+redundant_2(_) -> none.
+
+redundant_3(X) when X < 51 -> 2*X;
+redundant_3(X) when X =< 80, X >= 51 -> 5*X;
+redundant_3(X) when X =/= 100 -> none;
+redundant_3(_) -> none.
+
+redundant_4(X) when X < 51 -> 2*X;
+redundant_4(X) when X =< 80, X > 50 -> 5*X;
+redundant_4(X) when X =/= 100 -> none;
+redundant_4(_) -> none.
+
+redundant_5(X) when X < 51 -> 2*X;
+redundant_5(X) when X > 50, X < 81 -> 5*X;
+redundant_5(X) when X =< 10 -> none;
+redundant_5(_) -> none.
+
+redundant_6(X) when X > 50, X =< 80 -> 5*X;
+redundant_6(X) when X < 51 -> 2*X;
+redundant_6(_) -> none.
+
+redundant_7(X) when is_integer(X), X >= 51, X =< 80 -> 5*X;
+redundant_7(X) when is_integer(X), X < 51 -> 2*X;
+redundant_7(_) -> none.
+
+redundant_8(X) when X >= 51, X =< 80 -> 5*X;
+redundant_8(X) when X < 51 -> 2*X;
+redundant_8(_) -> none.
+
+redundant_9(X) when X >= 51, X =< 80 -> 5*X;
+redundant_9(X) when X < 51 -> 2*X;
+redundant_9(90) -> none;
+redundant_9(X) when X =/= 90 -> none;
+redundant_9(_) -> none.
+
+redundant_10(X) when X >= 51, X =< 80 -> 5*X;
+redundant_10(X) when X < 51 -> 2*X;
+redundant_10(90) -> none;
+redundant_10(X) when X =:= 90 -> none;
+redundant_10(_) -> none.
+
+redundant_11(X) when X < 51 -> 2*X;
+redundant_11(X) when X =:= 10 -> 2*X;
+redundant_11(X) when X >= 51, X =< 80 -> 5*X;
+redundant_11(_) -> none.
%% Test type tests on literal values. (From emulator test suites.)
literal_type_tests(Config) when is_list(Config) ->
diff --git a/lib/compiler/test/lc_SUITE.erl b/lib/compiler/test/lc_SUITE.erl
index 398398a397..6c5b34498b 100644
--- a/lib/compiler/test/lc_SUITE.erl
+++ b/lib/compiler/test/lc_SUITE.erl
@@ -18,12 +18,12 @@
%%
-module(lc_SUITE).
--author('[email protected]').
-export([all/0, suite/0,groups/0,init_per_suite/1, end_per_suite/1,
init_per_group/2,end_per_group/2,
init_per_testcase/2,end_per_testcase/2,
basic/1,deeply_nested/1,no_generator/1,
- empty_generator/1,no_export/1]).
+ empty_generator/1,no_export/1,shadow/1,
+ effect/1]).
-include_lib("test_server/include/test_server.hrl").
@@ -31,10 +31,18 @@ suite() -> [{ct_hooks,[ts_install_cth]}].
all() ->
test_lib:recompile(?MODULE),
- [basic, deeply_nested, no_generator, empty_generator, no_export].
+ [{group,p}].
groups() ->
- [].
+ [{p,test_lib:parallel(),
+ [basic,
+ deeply_nested,
+ no_generator,
+ empty_generator,
+ no_export,
+ shadow,
+ effect
+ ]}].
init_per_suite(Config) ->
Config.
@@ -59,34 +67,34 @@ end_per_testcase(Case, Config) when is_atom(Case), is_list(Config) ->
ok.
basic(Config) when is_list(Config) ->
- ?line L0 = lists:seq(1, 10),
- ?line L1 = my_map(fun(X) -> {x,X} end, L0),
- ?line L1 = [{x,X} || X <- L0],
- ?line L0 = my_map(fun({x,X}) -> X end, L1),
- ?line [1,2,3,4,5] = [X || X <- L0, X < 6],
- ?line [4,5,6] = [X || X <- L0, X > 3, X < 7],
- ?line [] = [X || X <- L0, X > 32, X < 7],
- ?line [1,3,5,7,9] = [X || X <- L0, odd(X)],
- ?line [2,4,6,8,10] = [X || X <- L0, not odd(X)],
- ?line [1,3,5,9] = [X || X <- L0, odd(X), X =/= 7],
- ?line [2,4,8,10] = [X || X <- L0, not odd(X), X =/= 6],
+ L0 = lists:seq(1, 10),
+ L1 = my_map(fun(X) -> {x,X} end, L0),
+ L1 = [{x,X} || X <- L0],
+ L0 = my_map(fun({x,X}) -> X end, L1),
+ [1,2,3,4,5] = [X || X <- L0, X < 6],
+ [4,5,6] = [X || X <- L0, X > 3, X < 7],
+ [] = [X || X <- L0, X > 32, X < 7],
+ [1,3,5,7,9] = [X || X <- L0, odd(X)],
+ [2,4,6,8,10] = [X || X <- L0, not odd(X)],
+ [1,3,5,9] = [X || X <- L0, odd(X), X =/= 7],
+ [2,4,8,10] = [X || X <- L0, not odd(X), X =/= 6],
%% Append is specially handled.
- ?line [1,3,5,9,2,4,8,10] = [X || X <- L0, odd(X), X =/= 7] ++
+ [1,3,5,9,2,4,8,10] = [X || X <- L0, odd(X), X =/= 7] ++
[X || X <- L0, not odd(X), X =/= 6],
%% Guards BIFs are evaluated in guard context. Weird, but true.
- ?line [{a,b,true},{x,y,true,true}] = [X || X <- tuple_list(), element(3, X)],
+ [{a,b,true},{x,y,true,true}] = [X || X <- tuple_list(), element(3, X)],
%% Filter expressions with andalso/orelse.
- ?line "abc123" = alphanum("?abc123.;"),
+ "abc123" = alphanum("?abc123.;"),
%% Error cases.
- ?line [] = [{xx,X} || X <- L0, element(2, X) == no_no_no],
- ?line {'EXIT',_} = (catch [X || X <- L1, list_to_atom(X) == dum]),
- ?line [] = [X || X <- L1, X+1 < 2],
- ?line {'EXIT',_} = (catch [X || X <- L1, odd(X)]),
- ?line fc([x], catch [E || E <- id(x)]),
+ [] = [{xx,X} || X <- L0, element(2, X) == no_no_no],
+ {'EXIT',_} = (catch [X || X <- L1, list_to_atom(X) == dum]),
+ [] = [X || X <- L1, X+1 < 2],
+ {'EXIT',_} = (catch [X || X <- L1, odd(X)]),
+ fc([x], catch [E || E <- id(x)]),
ok.
tuple_list() ->
@@ -116,12 +124,12 @@ deeply_nested_1() ->
X16 <- [4],X17 <- [3],X18 <- [fun() -> X16+X17 end],X19 <- [2],X20 <- [1]].
no_generator(Config) when is_list(Config) ->
- ?line Seq = lists:seq(-10, 17),
- ?line [no_gen_verify(no_gen(A, B), A, B) || A <- Seq, B <- Seq],
+ Seq = lists:seq(-10, 17),
+ [no_gen_verify(no_gen(A, B), A, B) || A <- Seq, B <- Seq],
%% Literal expression, for coverage.
- ?line [a] = [a || true],
- ?line [a,b,c] = [a || true] ++ [b,c],
+ [a] = [a || true],
+ [a,b,c] = [a || true] ++ [b,c],
ok.
no_gen(A, B) ->
@@ -174,13 +182,40 @@ no_gen_eval(Fun, Res) ->
no_gen_one_more(A, B) -> A + 1 =:= B.
empty_generator(Config) when is_list(Config) ->
- ?line [] = [X || {X} <- [], (false or (X/0 > 3))],
+ [] = [X || {X} <- [], (false or (X/0 > 3))],
ok.
no_export(Config) when is_list(Config) ->
[] = [ _X = a || false ] ++ [ _X = a || false ],
ok.
+%% Test that variables in list comprehensions are
+%% correctly shadowed.
+
+shadow(Config) when is_list(Config) ->
+ Shadowed = nomatch,
+ _ = id(Shadowed), %Eliminate warning.
+ L = [{Shadowed,Shadowed+1} || Shadowed <- lists:seq(7, 9)],
+ [{7,8},{8,9},{9,10}] = id(L),
+ [8,9] = id([Shadowed || {_,Shadowed} <- id(L),
+ Shadowed < 10]),
+ ok.
+
+effect(Config) when is_list(Config) ->
+ [{42,{a,b,c}}] =
+ do_effect(fun(F, L) ->
+ [F({V1,V2}) ||
+ #{<<1:500>>:=V1,<<2:301>>:=V2} <- L],
+ ok
+ end, id([#{},x,#{<<1:500>>=>42,<<2:301>>=>{a,b,c}}])),
+ ok.
+
+do_effect(Lc, L) ->
+ put(?MODULE, []),
+ F = fun(V) -> put(?MODULE, [V|get(?MODULE)]) end,
+ ok = Lc(F, L),
+ lists:reverse(erase(?MODULE)).
+
id(I) -> I.
fc(Args, {'EXIT',{function_clause,[{?MODULE,_,Args,_}|_]}}) -> ok;
diff --git a/lib/compiler/test/map_SUITE.erl b/lib/compiler/test/map_SUITE.erl
index 403b7e8405..bc5ae803c6 100644
--- a/lib/compiler/test/map_SUITE.erl
+++ b/lib/compiler/test/map_SUITE.erl
@@ -21,6 +21,7 @@
]).
-export([
+ %% literals
t_build_and_match_literals/1,
t_update_literals/1,t_match_and_update_literals/1,
t_update_map_expressions/1,
@@ -32,6 +33,15 @@
t_map_size/1,
t_build_and_match_aliasing/1,
+ %% variables
+ t_build_and_match_variables/1,
+ t_update_assoc_variables/1,t_update_exact_variables/1,
+ t_nested_pattern_expressions/1,
+ t_guard_update_variables/1,
+ t_guard_sequence_variables/1,
+ t_guard_sequence_mixed/1,
+ t_frequency_table/1,
+
%% warnings
t_warn_useless_build/1,
t_warn_pair_key_overloaded/1,
@@ -51,7 +61,10 @@
suite() -> [].
-all() -> [
+all() ->
+ test_lib:recompile(?MODULE),
+ [
+ %% literals
t_build_and_match_literals,
t_update_literals, t_match_and_update_literals,
t_update_map_expressions,
@@ -62,6 +75,15 @@ all() -> [
t_map_size,
t_build_and_match_aliasing,
+ %% variables
+ t_build_and_match_variables,
+ t_update_assoc_variables,t_update_exact_variables,
+ t_nested_pattern_expressions,
+ t_guard_update_variables,
+ t_guard_sequence_variables,
+ t_guard_sequence_mixed,
+ t_frequency_table,
+
%% warnings
t_warn_useless_build,
t_warn_pair_key_overloaded,
@@ -73,6 +95,7 @@ all() -> [
t_build_and_match_nil,
t_build_and_match_structure,
+
%% errors in 17.0-rc1
t_update_values,
t_expand_map_update,
@@ -119,6 +142,11 @@ t_build_and_match_literals(Config) when is_list(Config) ->
%% nil key
#{[]:=ok,1:=2} = id(#{[]=>ok,1=>2}),
+ #{1:=2,[]:=ok,1:=2} = id(#{[]=>ok,1=>2}),
+
+ %% pseudo literals
+ #{ -3 := yep } = id(#{ -3 => yep }),
+ #{ <<0:358>> := "three" } = id(#{<<0:358>> =>"three"}),
%% error case
{'EXIT',{{badmatch,_},_}} = (catch (#{x:=3,x:=2} = id(#{x=>3}))),
@@ -126,10 +154,10 @@ t_build_and_match_literals(Config) when is_list(Config) ->
{'EXIT',{{badmatch,_},_}} = (catch (#{x:=3} = id({a,b,c}))),
{'EXIT',{{badmatch,_},_}} = (catch (#{x:=3} = id(#{y=>3}))),
{'EXIT',{{badmatch,_},_}} = (catch (#{x:=3} = id(#{x=>"three"}))),
- {'EXIT',{badarg,_}} = (catch id(#{<<0:258>> =>"three"})),
{'EXIT',{{badmatch,_},_}} = (catch (#{#{"a"=>42} := 3}=id(#{#{"a"=>3}=>42}))),
ok.
+
t_build_and_match_aliasing(Config) when is_list(Config) ->
M1 = id(#{a=>1,b=>2,c=>3,d=>4}),
#{c:=C1=_=_=C2} = M1,
@@ -143,6 +171,19 @@ t_build_and_match_aliasing(Config) when is_list(Config) ->
M2 = id(#{"a"=>1,"b"=>2,"c"=>3,"d"=>4}),
#{"a":=A2,"a":=A2,"a":=A2,"b":=B2,"b":=B2,"b":=2} = M2,
#{"a":=_,"a":=_,"a":=_,"b":=_,"b":=_,"b":=2} = M2,
+
+ #{a:=A1,a:=A1,a:=A1,b:=B1,b:=B1} = #{a:=A1,a:=A1,a:=A1,b:=B1,b:=B1,b:=2} = M1,
+ #{"a":=A3,"b":=B3} = #{"a":=A3,"a":=A3} = #{"b":=B3,"b":=2} = M2,
+
+ #{"a":=1,"b":=2,"c":=3,"d":=4} = #{"a":=A4,"b":=B4} = #{"a":=A4,"a":=A4} = #{"b":=B4,"d":=4} = M2,
+ #{"a":=A5,"b":=B5} = #{"a":=A5,"a":=A5} = #{"b":=B5,"d":=4} = #{"a":=1,"b":=2,"c":=3,"d":=4} = M2,
+ #{"a":=_,"b":=_} = #{"a":=_,"a":=_} = #{"b":=_,"d":=4} = #{"a":=1,"b":=2,"c":=3,"d":=4} = M2,
+
+ M3 = id(#{<<12:300>>=>1,<<13:300>>=>2}),
+ #{<<12:300>> := V1, <<13:300>> := V2} = #{<<13:300>> := V2, <<12:300>> := V1} = M3,
+ #{<<12:300>> := 1, <<13:300>> := 2} = #{<<13:300>> := _, <<12:300>> := _} = M3,
+ #{<<13:300>> := _, <<12:300>> := _} = #{<<12:300>> := 1, <<13:300>> := 2} = M3,
+
ok.
t_map_size(Config) when is_list(Config) ->
@@ -241,11 +282,14 @@ t_update_assoc(Config) when is_list(Config) ->
#{1:=a,2:=b,3.0:=new,4:=d,5:=e} = M2,
M2 = M0#{3.0:=wrong,3.0=>new},
+ % Can't handle directly yet
+ Bin = <<0:257>>,
+ #{ Bin := val } = id(M0#{<<0:257>> => val}), %% binary limitation
+
%% Errors cases.
BadMap = id(badmap),
{'EXIT',{badarg,_}} = (catch BadMap#{nonexisting=>val}),
{'EXIT',{badarg,_}} = (catch <<>>#{nonexisting=>val}),
- {'EXIT',{badarg,_}} = (catch M0#{<<0:257>> => val}), %% limitation
ok.
t_update_exact(Config) when is_list(Config) ->
@@ -275,14 +319,22 @@ t_update_exact(Config) when is_list(Config) ->
{'EXIT',{badarg,_}} = (catch M0#{42=>v1,42.0:=v2,42:=v3}),
{'EXIT',{badarg,_}} = (catch <<>>#{nonexisting:=val}),
{'EXIT',{badarg,_}} = (catch M0#{<<0:257>> := val}), %% limitation
+
+ %% A workaround for a bug allowed an empty map to be updated.
+ {'EXIT',{badarg,_}} = (catch (id(#{}))#{a:=1}),
+ {'EXIT',{badarg,_}} = (catch #{}#{a:=1}),
+ Empty = #{},
+ {'EXIT',{badarg,_}} = (catch Empty#{a:=1}),
ok.
t_update_values(Config) when is_list(Config) ->
V0 = id(1337),
M0 = #{ a => 1, val => V0},
V1 = get_val(M0),
- M1 = M0#{ val := [V0,V1], "wazzup" => 42 },
+ M1 = id(M0#{ val := [V0,V1], "wazzup" => 42 }),
[1337, {some_val, 1337}] = get_val(M1),
+ M2 = id(M1#{ <<42:333>> => 1337 }),
+ {bin_key,1337} = get_val(M2),
N = 110,
List = [{[I,1,2,3,I],{1,2,3,"wat",I}}|| I <- lists:seq(1,N)],
@@ -308,6 +360,7 @@ t_export(Config) when is_list(Config) ->
check_val(#{val1:=V1, val2:=V2},V1,V2) -> ok.
+get_val(#{ <<42:333>> := V }) -> {bin_key, V};
get_val(#{ "wazzup" := _, val := V}) -> V;
get_val(#{ val := V }) -> {some_val, V}.
@@ -437,7 +490,10 @@ guard_receive_loop() ->
t_list_comprehension(Config) when is_list(Config) ->
- [#{k:=1},#{k:=2},#{k:=3}] = [#{k=>I} || I <- [1,2,3]],
+ [#{k:=1},#{k:=2},#{k:=3}] = id([#{k=>I} || I <- [1,2,3]]),
+ Ls = id([#{<<2:301>> => I, "wat" => I + 1} || I <- [1,2,3]]),
+ [#{<<2:301>>:=1,"wat":=2},#{<<2:301>>:=2,"wat":=3},#{<<2:301>>:=3,"wat":=4}] = Ls,
+ [{1,2},{2,3},{3,4}] = id([{I2,I1} || #{"wat" := I1, <<2:301>> := I2} <- Ls]),
ok.
t_guard_fun(Config) when is_list(Config) ->
@@ -601,5 +657,325 @@ t_build_and_match_structure(Config) when is_list(Config) ->
end,
ok.
+%% simple build and match variables
+t_build_and_match_variables(Config) when is_list(Config) ->
+ K0 = id(#{}),
+ K1 = id(1), V1 = id(a),
+ K2 = id(2), V2 = id(b),
+ K3 = id(3), V3 = id("c"),
+ K4 = id("4"), V4 = id("d"),
+ K5 = id(<<"5">>), V5 = id(<<"e">>),
+ K6 = id({"6",7}), V6 = id("f"),
+ K7 = id(#{ "a" => 3 }),
+ #{K1:=V1} = id(#{K1=>V1}),
+ #{K1:=V1,K2:=V2} = id(#{K1=>V1,K2=>V2}),
+ #{K1:=V1,K2:=V2,K3:=V3} = id(#{K1=>V1,K2=>V2,K3=>V3}),
+ #{K1:=V1,K2:=V2,K3:=V3,K4:=V4} = id(#{K1=>V1,K2=>V2,K3=>V3,K4=>V4}),
+ #{K1:=V1,K2:=V2,K3:=V3,K4:=V4,K5:=V5} = id(#{K1=>V1,K2=>V2,K3=>V3,K4=>V4,K5=>V5}),
+ #{K1:=V1,K2:=V2,K3:=V3,K4:=V4,K5:=V5,K6:=V6} = id(#{K1=>V1,K2=>V2,K3=>V3,K4=>V4,K5=>V5,K6=>V6}),
+
+ #{K5:=X,K5:=X=3,K4:=4} = id(#{K5=>3,K4=>4}),
+ #{K5:=X,<<"5">>:=X=3,K4:=4} = id(#{K5=>3,K4=>4}),
+ #{K5:=X,<<"5">>:=X=3,K4:=4} = id(#{<<"5">>=>3,K4=>4}),
+
+ #{ K4:=#{ K3:=#{K1:=V1, K2:=V2}}, K5:=V5} =
+ id(#{ K5=>V5, K4=>#{ K3=>#{K2 => V2, K1 => V1}}}),
+ #{ K4 := #{ K5 := Res }, K6 := Res} = id(#{K4=>#{K5 => 99}, K6 => 99}),
+
+ %% has keys
+ #{a :=_,b :=_,K1:=_,K2:=_,K3:=V3,K4:=ResKey,K4:=ResKey,"4":=ResKey,"4":="ok"} =
+ id(#{ a=>1, b=>1, K1=>V1, K2=>V2, K3=>V3, K4=>"nope", "4"=>"ok" }),
+
+ %% function
+ ok = match_function_map_neg_keys(#{ -1 => a, -2 => b, -3 => c }),
+
+ %% map key
+ #{ K0 := 42 } = id(#{ K0 => 42 }),
+ #{ K7 := 42 } = id(#{ K7 => 42 }),
+
+ %% nil key
+ KNIL = id([]),
+ #{KNIL:=ok,1:=2} = id(#{KNIL=>ok,1=>2}),
+
+ Bin = <<0:258>>,
+ #{ Bin := "three" } = id(#{<<0:258>> =>"three"}),
+
+ %% error case
+ {'EXIT',{{badmatch,_},_}} = (catch (#{K5:=3,x:=2} = id(#{K5=>3}))),
+ {'EXIT',{{badmatch,_},_}} = (catch (#{K5:=2} = id(#{K5=>3}))),
+ {'EXIT',{{badmatch,_},_}} = (catch (#{K5:=3} = id({a,b,c}))),
+ {'EXIT',{{badmatch,_},_}} = (catch (#{K5:=3} = id(#{K6=>3}))),
+ {'EXIT',{{badmatch,_},_}} = (catch (#{K5:=3} = id(K7))),
+ {'EXIT',{{badmatch,_},_}} = (catch (#{K7:=3} = id(#{K7=>42}))),
+ ok.
+
+
+match_function_map_neg_keys(#{ -1 := a, -2 := b, -3 := c }) -> ok.
+
+t_update_assoc_variables(Config) when is_list(Config) ->
+ K1 = id(1),
+ K2 = id(2),
+ K3 = id(3.0),
+ K4 = id(4),
+ K5 = id(5),
+ K6 = id(2.0),
+
+ M0 = #{K1=>a,K2=>b,K3=>c,K4=>d,K5=>e},
+
+ M1 = M0#{K1=>42,K2=>100,K4=>[a,b,c]},
+ #{1:=42,2:=100,3.0:=c,4:=[a,b,c],5:=e} = M1,
+ #{1:=42,2:=b,4:=d,5:=e,2.0:=100,K3:=c,4.0:=[a,b,c]} = M0#{1.0=>float,1:=42,2.0=>wrong,K6=>100,4.0=>[a,b,c]},
+
+ M2 = M0#{K3=>new},
+ #{1:=a,2:=b,K3:=new,4:=d,5:=e} = M2,
+ M2 = M0#{3.0:=wrong,K3=>new},
+
+ #{ <<0:258>> := val } = id(M0#{<<0:258>> => val}), %% binary limitation
+
+ %% Errors cases.
+ BadMap = id(badmap),
+ {'EXIT',{badarg,_}} = (catch BadMap#{nonexisting=>val}),
+ {'EXIT',{badarg,_}} = (catch <<>>#{nonexisting=>val}),
+ ok.
+
+t_update_exact_variables(Config) when is_list(Config) ->
+ K1 = id(1),
+ K2 = id(2),
+ K3 = id(3.0),
+ K4 = id(4),
+
+ M0 = id(#{1=>a,2=>b,3.0=>c,4=>d,5=>e}),
+
+ M1 = M0#{K1:=42,K2:=100,K4:=[a,b,c]},
+ #{1:=42,2:=100,3.0:=c,K4:=[a,b,c],5:=e} = M1,
+ M1 = M0#{K1:=wrong,1:=also_wrong,K1=>42,2=>wrong,K2:=100,4:=[a,b,c]},
+
+ M2 = M0#{K3:=new},
+ #{1:=a,K2:=b,3.0:=new,K4:=d,5:=e} = M2,
+ M2 = M0#{3.0=>wrong,K3:=new},
+ true = M2 =/= M0#{3=>right,3.0:=new},
+ #{ 3 := right, 3.0 := new } = M0#{3=>right,K3:=new},
+
+ M3 = id(#{ 1 => val}),
+ #{1 := update2,1.0 := new_val4} = M3#{
+ 1.0 => new_val1, K1 := update, K1=> update3,
+ K1 := update2, 1.0 := new_val2, 1.0 => new_val3,
+ 1.0 => new_val4 },
+
+ #{ "wat" := 3, 2 := a } = id(#{ "wat" => 1, K2 => 2 }#{ K2 := a, "wat" := 3 }),
+
+ %% Errors cases.
+ {'EXIT',{badarg,_}} = (catch ((id(nil))#{ a := b })),
+ {'EXIT',{badarg,_}} = (catch M0#{nonexisting:=val}),
+ {'EXIT',{badarg,_}} = (catch M0#{1.0:=v,1.0=>v2}),
+ {'EXIT',{badarg,_}} = (catch M0#{42.0:=v,42:=v2}),
+ {'EXIT',{badarg,_}} = (catch M0#{42=>v1,42.0:=v2,42:=v3}),
+ {'EXIT',{badarg,_}} = (catch <<>>#{nonexisting:=val}),
+ {'EXIT',{badarg,_}} = (catch M0#{<<0:257>> := val}), %% limitation
+ ok.
+
+t_nested_pattern_expressions(Config) when is_list(Config) ->
+ K1 = id("hello"),
+ %K2 = id({ok}),
+ [_,_,#{ <<"hi">> := wat, K1 := 42 }|_] = id([k,k,#{<<"hi">> => wat, K1 => 42}]),
+ [_,_,#{ -1 := wat, K1 := 42 }|_] = id([k,k,#{-1 => wat, K1 => 42}]),
+ [_,_,{#{ -1 := #{ {-3,<<0:300>>} := V1 }, K1 := 42 },3}|_] = id([k,k,{#{-1 => #{{-3,<<0:300>>}=>"hi"}, K1 => 42},3}]),
+ "hi" = V1,
+ %[k,#{ {-1,K1,[]} := {wat,K1}, K2 := 42 }|_] = id([k,#{{-1,K1,[]} => {wat,K1}, K2 => 42}]),
+ %[k,#{ [-1,K2,[]] := {wat,K1}, K1 := 42 }|_] = id([k,#{[-1,K2,[]] => {wat,K1}, K1 => 42}]),
+
+ M0 = id(#{ <<33:333>> => 1, <<332:333>> => ok, a => ok, wat => yep, watzor => ok }),
+ F0 = map_nested_pattern_funs(M0),
+ F1 = F0(wat),
+ F2 = F1(watzor),
+ {yep,ok} = F2(M0),
+ ok.
+
+map_nested_pattern_funs(M) ->
+ K0 = id(a),
+ fun(K1) ->
+ case M of
+ #{ K0 := ok, K1 := yep, <<33:333>> := 1 } ->
+ fun(K2) ->
+ case M of
+ #{ K2 := ok, K1 := yep, <<33:333>> := 1 } ->
+ fun
+ (#{ <<332:333>> := ok, K1 := V1, K2 := V2 }) ->
+ {V1,V2}
+ end
+ end
+ end
+ end
+ end.
+
+t_guard_update_variables(Config) when is_list(Config) ->
+ error = map_guard_update_variables(n,#{},#{}),
+ first = map_guard_update_variables(x,#{}, #{x=>first}),
+ second = map_guard_update_variables(x,#{y=>old}, #{x=>second,y=>old}),
+ third = map_guard_update_variables(x,#{x=>old,y=>old}, #{x=>third,y=>old}),
+ fourth = map_guard_update_variables(x,#{x=>old,y=>old}, #{x=>4,y=>new}),
+ ok.
+
+map_guard_update_variables(K,M1,M2) when M1#{K=>first} =:= M2 -> first;
+map_guard_update_variables(K,M1,M2) when M1#{K=>second} =:= M2 -> second;
+map_guard_update_variables(K,M1,M2) when M1#{K:=third} =:= M2 -> third;
+map_guard_update_variables(K,M1,M2) when M1#{K:=4,y=>new} =:= M2 -> fourth;
+map_guard_update_variables(_,_,_) -> error.
+
+t_guard_sequence_variables(Config) when is_list(Config) ->
+ {1,"a"} = map_guard_sequence_var_1(a,#{seq=>1,a=>id("a"),b=>no}),
+ {2,"b"} = map_guard_sequence_var_1(b,#{seq=>2,b=>id("b"),a=>no}),
+ {3,"c"} = map_guard_sequence_var_1(a,#{seq=>3,a=>id("c"),b=>no}),
+ {4,"d"} = map_guard_sequence_var_1(b,#{seq=>4,b=>id("d"),a=>no}),
+ {4,4} = map_guard_sequence_var_1(seq,#{seq=>4}),
+ {4,4,y} = map_guard_sequence_var_1(seq,#{seq=>4,b=>id("d"),a=>y}),
+ {5,"d"} = map_guard_sequence_var_1(b,#{seq=>5,b=>id("d"),a=>y}),
+
+ %% error case
+ {'EXIT',{{case_clause,_},_}} = (catch map_guard_sequence_var_1("a",#{seq=>4,val=>id("e")})),
+ ok.
+
+
+map_guard_sequence_var_1(K,M) ->
+ case M of
+ #{seq:=1=Seq, K:=Val} -> {Seq,Val};
+ #{seq:=2=Seq, K:=Val} -> {Seq,Val};
+ #{seq:=3=Seq, K:=Val} -> {Seq,Val};
+ #{K:=4=Seq, K:=Val1,a:=Val2} -> {Seq,Val1,Val2};
+ #{seq:=4=Seq, K:=Val} -> {Seq,Val};
+ #{K:=4=Seq, K:=Val} -> {Seq,Val};
+ #{seq:=5=Seq, K:=Val} -> {Seq,Val}
+ end.
+
+
+t_guard_sequence_mixed(Config) when is_list(Config) ->
+ M0 = id(#{ a=>1, b=>1, c=>1, d=>1, e=>1, f=>1, g=>1, h=>1 }),
+ M1 = id(M0#{ d := 3 }),
+ 1 = map_guard_sequence_mixed(a,d,M1),
+ M2 = id(M1#{ b := 2, d := 4, h := 2 }),
+ 2 = map_guard_sequence_mixed(a,d,M2),
+ M3 = id(M2#{ b := 3, e := 5, g := 3 }),
+ 3 = map_guard_sequence_mixed(a,e,M3),
+ M4 = id(M3#{ c := 4, e := 6, h := 1 }),
+ 4 = map_guard_sequence_mixed(a,e,M4),
+ M5 = id(M4#{ c := 5, f := 7, g := 2 }),
+ 5 = map_guard_sequence_mixed(a,f,M5),
+ M6 = id(M5#{ c := 6, f := 8, h := 3 }),
+ 6 = map_guard_sequence_mixed(a,f,M6),
+
+ %% error case
+ {'EXIT',{{case_clause,_},_}} = (catch map_guard_sequence_mixed(a,b,M0)),
+ ok.
+
+map_guard_sequence_mixed(K1,K2,M) ->
+ case M of
+ #{ K1 := 1, b := 1, K2 := 3, g := 1} -> 1;
+ #{ K1 := 1, b := 2, K2 := 4, h := 2} -> 2;
+ #{ K1 := 1, b := 3, K2 := 5, g := 3} -> 3;
+ #{ K1 := 1, c := 4, K2 := 6, h := 1} -> 4;
+ #{ K1 := 1, c := 5, K2 := 7, g := 2} -> 5;
+ #{ K1 := 1, c := 6, K2 := 8, h := 3} -> 6
+ end.
+
+
+
+t_frequency_table(Config) when is_list(Config) ->
+ random:seed({13,1337,54}), % pseudo random
+ N = 100000,
+ Ts = rand_terms(N),
+ #{ n:=N, tf := Tf } = frequency_table(Ts,#{ n=>0, tf => #{}}),
+ ok = check_frequency(Ts,Tf),
+ ok.
+
+
+frequency_table([T|Ts], M) ->
+ case M of
+ #{ n := N, tf := #{ T := C } = F } ->
+ frequency_table(Ts,M#{ n := N + 1, tf := F#{ T := C + 1 }});
+ #{ n := N, tf := F } ->
+ frequency_table(Ts,M#{ n := N + 1, tf := F#{ T => 1 }})
+ end;
+frequency_table([], M) -> M.
+
+
+check_frequency(Ts,Tf) ->
+ check_frequency(Ts,Tf,dict:new()).
+
+check_frequency([T|Ts],Tf,D) ->
+ case dict:find(T,D) of
+ error -> check_frequency(Ts,Tf,dict:store(T,1,D));
+ {ok,C} -> check_frequency(Ts,Tf,dict:store(T,C+1,D))
+ end;
+check_frequency([],Tf,D) ->
+ validate_frequency(dict:to_list(D),Tf).
+
+validate_frequency([{T,C}|Fs],Tf) ->
+ case Tf of
+ #{ T := C } -> validate_frequency(Fs,Tf);
+ _ -> error
+ end;
+validate_frequency([], _) -> ok.
+
+
+%% aux
+
+rand_terms(0) -> [];
+rand_terms(N) -> [rand_term()|rand_terms(N-1)].
+
+rand_term() ->
+ case random:uniform(6) of
+ 1 -> rand_binary();
+ 2 -> rand_number();
+ 3 -> rand_atom();
+ 4 -> rand_tuple();
+ 5 -> rand_list();
+ 6 -> rand_map()
+ end.
+
+rand_binary() ->
+ case random:uniform(3) of
+ 1 -> <<>>;
+ 2 -> <<"hi">>;
+ 3 -> <<"message text larger than 64 bytes. yep, message text larger than 64 bytes.">>
+ end.
+
+rand_number() ->
+ case random:uniform(3) of
+ 1 -> random:uniform(5);
+ 2 -> float(random:uniform(5));
+ 3 -> 1 bsl (63 + random:uniform(3))
+ end.
+
+rand_atom() ->
+ case random:uniform(3) of
+ 1 -> hi;
+ 2 -> some_atom;
+ 3 -> some_other_atom
+ end.
+
+
+rand_tuple() ->
+ case random:uniform(3) of
+ 1 -> {ok, rand_term()}; % careful
+ 2 -> {1, 2, 3};
+ 3 -> {<<"yep">>, 1337}
+ end.
+
+rand_list() ->
+ case random:uniform(3) of
+ 1 -> "hi";
+ 2 -> [1,rand_term()]; % careful
+ 3 -> [improper|list]
+ end.
+
+rand_map() ->
+ case random:uniform(3) of
+ 1 -> #{ hi => 3 };
+ 2 -> #{ wat => rand_term(), other => 3 }; % careful
+ 3 -> #{ hi => 42, other => 42, yet_anoter => 1337 }
+ end.
+
+
+
%% Use this function to avoid compile-time evaluation of an expression.
id(I) -> I.
diff --git a/lib/compiler/test/match_SUITE.erl b/lib/compiler/test/match_SUITE.erl
index 1e778dca24..7522ee985f 100644
--- a/lib/compiler/test/match_SUITE.erl
+++ b/lib/compiler/test/match_SUITE.erl
@@ -22,7 +22,8 @@
init_per_group/2,end_per_group/2,
pmatch/1,mixed/1,aliases/1,match_in_call/1,
untuplify/1,shortcut_boolean/1,letify_guard/1,
- selectify/1,underscore/1,match_map/1,coverage/1]).
+ selectify/1,underscore/1,match_map/1,map_vars_used/1,
+ coverage/1]).
-include_lib("test_server/include/test_server.hrl").
@@ -33,10 +34,10 @@ all() ->
[{group,p}].
groups() ->
- [{p,test_lib:parallel(),
+ [{p,[parallel],
[pmatch,mixed,aliases,match_in_call,untuplify,
shortcut_boolean,letify_guard,selectify,
- underscore,match_map,coverage]}].
+ underscore,match_map,map_vars_used,coverage]}].
init_per_suite(Config) ->
@@ -419,6 +420,18 @@ do_match_map_2(Map) ->
Tuple
end.
+map_vars_used(Config) when is_list(Config) ->
+ {some,value} = do_map_vars_used(a, b, #{{a,b}=>42,v=>{some,value}}),
+ ok.
+
+do_map_vars_used(X, Y, Map) ->
+ case {X,Y} of
+ T ->
+ %% core_lib:is_var_used/2 would not consider T used.
+ #{T:=42,v:=Val} = Map,
+ Val
+ end.
+
coverage(Config) when is_list(Config) ->
%% Cover beam_dead.
ok = coverage_1(x, a),
diff --git a/lib/compiler/test/misc_SUITE.erl b/lib/compiler/test/misc_SUITE.erl
index 44c7161530..d721a86f5a 100644
--- a/lib/compiler/test/misc_SUITE.erl
+++ b/lib/compiler/test/misc_SUITE.erl
@@ -60,7 +60,7 @@ all() ->
[{group,p}].
groups() ->
- [{p,[],%%test_lib:parallel(),
+ [{p,[],
[tobias,empty_string,md5,silly_coverage,
confused_literals,integer_encoding,override_bif]}].
@@ -225,14 +225,15 @@ silly_coverage(Config) when is_list(Config) ->
{label,2}|non_proper_list]}],99},
?line expect_error(fun() -> beam_bool:module(BoolInput, []) end),
- %% beam_dead
+ %% beam_dead. This is tricky. Our function must look OK to
+ %% beam_utils:clean_labels/1, but must crash beam_dead.
DeadInput = {?MODULE,[{foo,0}],[],
[{function,foo,0,2,
[{label,1},
{func_info,{atom,?MODULE},{atom,foo},0},
{label,2},
- {jump,bad}]}],99},
- ?line expect_error(fun() -> beam_block:module(DeadInput, []) end),
+ {test,is_eq_exact,{f,1},[bad,operands]}]}],99},
+ expect_error(fun() -> beam_dead:module(DeadInput, []) end),
%% beam_clean
CleanInput = {?MODULE,[{foo,0}],[],
diff --git a/lib/compiler/test/receive_SUITE.erl b/lib/compiler/test/receive_SUITE.erl
index 00a6e900d4..fb82bf6101 100644
--- a/lib/compiler/test/receive_SUITE.erl
+++ b/lib/compiler/test/receive_SUITE.erl
@@ -187,12 +187,13 @@ ref_opt(Config) when is_list(Config) ->
end.
ref_opt_1(Config) ->
- ?line DataDir = ?config(data_dir, Config),
- ?line PrivDir = ?config(priv_dir, Config),
+ DataDir = ?config(data_dir, Config),
+ PrivDir = ?config(priv_dir, Config),
Sources = filelib:wildcard(filename:join([DataDir,"ref_opt","*.{erl,S}"])),
- ?line test_lib:p_run(fun(Src) ->
- do_ref_opt(Src, PrivDir)
- end, Sources),
+ test_lib:p_run(fun(Src) ->
+ do_ref_opt(Src, PrivDir)
+ end, Sources),
+ cover_recv_instructions(),
ok.
do_ref_opt(Source, PrivDir) ->
@@ -202,9 +203,9 @@ do_ref_opt(Source, PrivDir) ->
{outdir,PrivDir}] ++
[from_asm || Ext =:= ".S" ]),
Base = filename:rootname(filename:basename(Source), Ext),
- code:purge(list_to_atom(Base)),
- BeamFile = filename:join(PrivDir, Base),
- code:load_abs(BeamFile),
+ code:purge(list_to_atom(Base)),
+ BeamFile = filename:join(PrivDir, Base),
+ code:load_abs(BeamFile),
ok = Mod:Mod(),
{beam_file,Mod,_,_,_,Code} = beam_disasm:file(BeamFile),
case Base of
@@ -232,6 +233,27 @@ collect_recv_opt_instrs(Code) ->
end] || {function,_,_,_,Is} <- Code],
lists:append(L).
+cover_recv_instructions() ->
+ %% We want to cover the handling of recv_mark and recv_set in beam_utils.
+ %% Since those instructions are introduced in a late optimization pass,
+ %% beam_utils:live_opt() will not see them unless the compilation is
+ %% started from a .S file. The compile_SUITE:asm/1 test case will
+ %% compile all test suite files to .S and then run them through the
+ %% compiler again.
+ %%
+ %% Here will we will ensure that this modules contains recv_mark
+ %% and recv_set instructions.
+ Pid = spawn_link(fun() ->
+ receive {Parent,Ref} ->
+ Parent ! Ref
+ end
+ end),
+ Ref = make_ref(),
+ Pid ! {self(),Ref},
+ receive
+ Ref -> ok
+ end.
+
export(Config) when is_list(Config) ->
Ref = make_ref(),
?line self() ! {result,Ref,42},
diff --git a/lib/compiler/test/test_lib.erl b/lib/compiler/test/test_lib.erl
index a8befbecd9..e8f469c5b4 100644
--- a/lib/compiler/test/test_lib.erl
+++ b/lib/compiler/test/test_lib.erl
@@ -20,9 +20,11 @@
-include("test_server.hrl").
-compile({no_auto_import,[binary_part/2]}).
--export([recompile/1,parallel/0,uniq/0,opt_opts/1,get_data_dir/1,
+-export([id/1,recompile/1,parallel/0,uniq/0,opt_opts/1,get_data_dir/1,
smoke_disasm/1,p_run/2,binary_part/2]).
+id(I) -> I.
+
recompile(Mod) when is_atom(Mod) ->
case whereis(cover_server) of
undefined -> ok;
@@ -44,6 +46,10 @@ smoke_disasm(File) when is_list(File) ->
Res = beam_disasm:file(File),
{beam_file,_Mod} = {element(1, Res),element(2, Res)}.
+%% If we are running cover, we don't want to run test cases that
+%% invokes the compiler in parallel, as doing so would probably
+%% be slower than running them sequentially.
+
parallel() ->
case ?t:is_cover() orelse erlang:system_info(schedulers) =:= 1 of
true -> [];
@@ -90,13 +96,18 @@ get_data_dir(Config) ->
%% Will fail the test case if there were any errors.
p_run(Test, List) ->
+ S = erlang:system_info(schedulers),
N = case ?t:is_cover() of
false ->
- erlang:system_info(schedulers);
+ S + 1;
true ->
- %% Cover is running. Using more than one process
- %% will probably only slow down compilation.
- 1
+ %% Cover is running. Using too many processes
+ %% could slow us down. Measurements on my computer
+ %% showed that using 4 parallel processes was
+ %% slightly faster than using 3. Using more than
+ %% 4 would not buy us much and could actually be
+ %% slower.
+ max(S, 4)
end,
p_run_loop(Test, List, N, [], 0, 0).
diff --git a/lib/compiler/test/trycatch_SUITE.erl b/lib/compiler/test/trycatch_SUITE.erl
index 4530d08c77..8ab618bb01 100644
--- a/lib/compiler/test/trycatch_SUITE.erl
+++ b/lib/compiler/test/trycatch_SUITE.erl
@@ -35,7 +35,7 @@ all() ->
[{group,p}].
groups() ->
- [{p,test_lib:parallel(),
+ [{p,[parallel],
[basic,lean_throw,try_of,try_after,catch_oops,
after_oops,eclectic,rethrow,nested_of,nested_catch,
nested_after,nested_horrid,last_call_optimization,
@@ -790,7 +790,6 @@ nested_after_1({X1,C1,V1},
nested_horrid(Config) when is_list(Config) ->
- _V = {make_ref(),nested_horrid,4.711},
{[true,true],{[true,1.0],1.0}} =
nested_horrid_1({true,void,void}, 1.0),
ok.
diff --git a/lib/compiler/test/warnings_SUITE.erl b/lib/compiler/test/warnings_SUITE.erl
index 0637041873..6663985ad7 100644
--- a/lib/compiler/test/warnings_SUITE.erl
+++ b/lib/compiler/test/warnings_SUITE.erl
@@ -39,7 +39,7 @@
guard/1,bad_arith/1,bool_cases/1,bad_apply/1,
files/1,effect/1,bin_opt_info/1,bin_construction/1,
comprehensions/1,maps/1,redundant_boolean_clauses/1,
- latin1_fallback/1]).
+ latin1_fallback/1,underscore/1]).
% Default timetrap timeout (set in init_per_testcase).
-define(default_timeout, ?t:minutes(2)).
@@ -64,7 +64,8 @@ groups() ->
[pattern,pattern2,pattern3,pattern4,guard,
bad_arith,bool_cases,bad_apply,files,effect,
bin_opt_info,bin_construction,comprehensions,maps,
- redundant_boolean_clauses,latin1_fallback]}].
+ redundant_boolean_clauses,latin1_fallback,
+ underscore]}].
init_per_suite(Config) ->
Config.
@@ -280,11 +281,12 @@ bad_arith(Config) when is_list(Config) ->
{3,sys_core_fold,{eval_failure,badarith}},
{9,sys_core_fold,nomatch_guard},
{9,sys_core_fold,{eval_failure,badarith}},
+ {9,sys_core_fold,{no_effect,{erlang,is_integer,1}}},
{10,sys_core_fold,nomatch_guard},
{10,sys_core_fold,{eval_failure,badarith}},
{15,sys_core_fold,{eval_failure,badarith}}
] }}],
- ?line [] = run(Config, Ts),
+ [] = run(Config, Ts),
ok.
bool_cases(Config) when is_list(Config) ->
@@ -601,7 +603,7 @@ maps(Config) when is_list(Config) ->
">>,
[],
{warnings,[{3,v3_core,bad_map}]}},
- {bad_map_literal_key,
+ {ok_map_literal_key,
<<"
t() ->
V = id(1),
@@ -614,7 +616,7 @@ maps(Config) when is_list(Config) ->
id(I) -> I.
">>,
[],
- {warnings,[{6,v3_core,nomatch}]}}],
+ []}],
run(Config, Ts),
ok.
@@ -678,6 +680,45 @@ latin1_fallback(Conf) when is_list(Conf) ->
ok.
+underscore(Config) when is_list(Config) ->
+ S0 = <<"f(A) ->
+ _VAR1 = <<A>>,
+ _VAR2 = {ok,A},
+ _VAR3 = [A],
+ ok.
+ g(A) ->
+ _VAR1 = A/0,
+ _VAR2 = date(),
+ ok.
+ h() ->
+ _VAR1 = fun() -> ok end,
+ ok.
+ i(A) ->
+ _VAR1 = #{A=>42},
+ ok.
+ ">>,
+ Ts0 = [{underscore0,
+ S0,
+ [],
+ {warnings,[{2,sys_core_fold,useless_building},
+ {3,sys_core_fold,useless_building},
+ {4,sys_core_fold,useless_building},
+ {7,sys_core_fold,result_ignored},
+ {8,sys_core_fold,{no_effect,{erlang,date,0}}},
+ {11,sys_core_fold,useless_building},
+ {14,sys_core_fold,useless_building}
+ ]}}],
+ [] = run(Config, Ts0),
+
+ %% Replace all "_VAR<digit>" variables with a plain underscore.
+ %% Now there should be no warnings.
+ S1 = re:replace(S0, "_VAR\\d+", "_", [global]),
+ io:format("~s\n", [S1]),
+ Ts1 = [{underscore1,S1,[],[]}],
+ [] = run(Config, Ts1),
+
+ ok.
+
%%%
%%% End of test cases.
%%%
@@ -699,10 +740,10 @@ run(Config, Tests) ->
%% Compiles a test module and returns the list of errors and warnings.
run_test(Conf, Test0, Warnings) ->
- Mod = "warnings_"++test_lib:uniq(),
- Filename = Mod ++ ".erl",
+ Module = "warnings_"++test_lib:uniq(),
+ Filename = Module ++ ".erl",
?line DataDir = ?privdir,
- Test = ["-module(", Mod, "). ", Test0],
+ Test = ["-module(", Module, "). ", Test0],
?line File = filename:join(DataDir, Filename),
?line Opts = [binary,export_all,return|Warnings],
?line ok = file:write_file(File, Test),