diff options
Diffstat (limited to 'lib/compiler/src')
30 files changed, 928 insertions, 1345 deletions
diff --git a/lib/compiler/src/Makefile b/lib/compiler/src/Makefile index 958d3501c7..c6d09d85eb 100644 --- a/lib/compiler/src/Makefile +++ b/lib/compiler/src/Makefile @@ -1,7 +1,7 @@ # # %CopyrightBegin% # -# Copyright Ericsson AB 1996-2012. All Rights Reserved. +# Copyright Ericsson AB 1996-2013. 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 @@ -45,6 +45,7 @@ RELSYSDIR = $(RELEASE_PATH)/lib/compiler-$(VSN) # Target Specs # ---------------------------------------------------- MODULES = \ + beam_a \ beam_asm \ beam_block \ beam_bool \ @@ -65,6 +66,7 @@ MODULES = \ beam_type \ beam_utils \ beam_validator \ + beam_z \ cerl \ cerl_clauses \ cerl_inline \ @@ -80,7 +82,6 @@ MODULES = \ sys_core_dsetel \ sys_core_fold \ sys_core_inline \ - sys_expand_pmod \ sys_pre_attributes \ sys_pre_expand \ v3_codegen \ @@ -121,7 +122,7 @@ ifeq ($(NATIVE_LIBS_ENABLED),yes) ERL_COMPILE_FLAGS += +native endif ERL_COMPILE_FLAGS += +inline +warn_unused_import \ - +warnings_as_errors \ + -Werror \ -I../../stdlib/include -I$(EGEN) -W # ---------------------------------------------------- @@ -143,19 +144,19 @@ clean: # ---------------------------------------------------- $(APP_TARGET): $(APP_SRC) ../vsn.mk - sed -e 's;%VSN%;$(VSN);' $< > $@ + $(vsn_verbose)sed -e 's;%VSN%;$(VSN);' $< > $@ $(APPUP_TARGET): $(APPUP_SRC) ../vsn.mk - sed -e 's;%VSN%;$(VSN);' $< > $@ + $(vsn_verbose)sed -e 's;%VSN%;$(VSN);' $< > $@ $(EGEN)/beam_opcodes.erl $(EGEN)/beam_opcodes.hrl: genop.tab - $(PERL) $(ERL_TOP)/erts/emulator/utils/beam_makeops -compiler -outdir $(EGEN) $< + $(gen_verbose)$(PERL) $(ERL_TOP)/erts/emulator/utils/beam_makeops -compiler -outdir $(EGEN) $< $(EBIN)/beam_asm.beam: $(ESRC)/beam_asm.erl $(EGEN)/beam_opcodes.hrl - $(ERLC) $(ERL_COMPILE_FLAGS) -DCOMPILER_VSN='"$(VSN)"' -o$(EBIN) $< + $(V_ERLC) $(ERL_COMPILE_FLAGS) -DCOMPILER_VSN='"$(VSN)"' -o$(EBIN) $< $(EBIN)/cerl_inline.beam: $(ESRC)/cerl_inline.erl - $(ERLC) $(ERL_COMPILE_FLAGS) +nowarn_shadow_vars -o$(EBIN) $< + $(V_ERLC) $(ERL_COMPILE_FLAGS) +nowarn_shadow_vars -o$(EBIN) $< # ---------------------------------------------------- # Release Target diff --git a/lib/compiler/src/beam_a.erl b/lib/compiler/src/beam_a.erl new file mode 100644 index 0000000000..1c51226314 --- /dev/null +++ b/lib/compiler/src/beam_a.erl @@ -0,0 +1,97 @@ +%% +%% %CopyrightBegin% +%% +%% Copyright Ericsson AB 2012. 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% +%% +%% Purpose: Run directly after code generation to do any normalization +%% or preparation to simplify the optimization passes. +%% (Mandatory.) + +-module(beam_a). + +-export([module/2]). + +module({Mod,Exp,Attr,Fs0,Lc}, _Opt) -> + Fs = [function(F) || F <- Fs0], + {ok,{Mod,Exp,Attr,Fs,Lc}}. + +function({function,Name,Arity,CLabel,Is0}) -> + try + %% Rename certain operations to simplify the optimization passes. + Is1 = rename_instrs(Is0), + + %% Remove unusued labels for cleanliness and to help + %% optimization passes and HiPE. + Is = beam_jump:remove_unused_labels(Is1), + {function,Name,Arity,CLabel,Is} + catch + Class:Error -> + Stack = erlang:get_stacktrace(), + io:fwrite("Function: ~w/~w\n", [Name,Arity]), + erlang:raise(Class, Error, Stack) + end. + +rename_instrs([{apply_last,A,N}|Is]) -> + [{apply,A},{deallocate,N},return|rename_instrs(Is)]; +rename_instrs([{call_last,A,F,N}|Is]) -> + [{call,A,F},{deallocate,N},return|rename_instrs(Is)]; +rename_instrs([{call_ext_last,A,F,N}|Is]) -> + [{call_ext,A,F},{deallocate,N},return|rename_instrs(Is)]; +rename_instrs([{call_only,A,F}|Is]) -> + [{call,A,F},return|rename_instrs(Is)]; +rename_instrs([{call_ext_only,A,F}|Is]) -> + [{call_ext,A,F},return|rename_instrs(Is)]; +rename_instrs([I|Is]) -> + [rename_instr(I)|rename_instrs(Is)]; +rename_instrs([]) -> []. + +rename_instr({bs_put_binary=I,F,Sz,U,Fl,Src}) -> + {bs_put,F,{I,U,Fl},[Sz,Src]}; +rename_instr({bs_put_float=I,F,Sz,U,Fl,Src}) -> + {bs_put,F,{I,U,Fl},[Sz,Src]}; +rename_instr({bs_put_integer=I,F,Sz,U,Fl,Src}) -> + {bs_put,F,{I,U,Fl},[Sz,Src]}; +rename_instr({bs_put_utf8=I,F,Fl,Src}) -> + {bs_put,F,{I,Fl},[Src]}; +rename_instr({bs_put_utf16=I,F,Fl,Src}) -> + {bs_put,F,{I,Fl},[Src]}; +rename_instr({bs_put_utf32=I,F,Fl,Src}) -> + {bs_put,F,{I,Fl},[Src]}; +%% rename_instr({bs_put_string,_,_}=I) -> +%% {bs_put,{f,0},I,[]}; +rename_instr({bs_add=I,F,[Src1,Src2,U],Dst}) when is_integer(U) -> + {bif,I,F,[Src1,Src2,{integer,U}],Dst}; +rename_instr({bs_utf8_size=I,F,Src,Dst}) -> + {bif,I,F,[Src],Dst}; +rename_instr({bs_utf16_size=I,F,Src,Dst}) -> + {bif,I,F,[Src],Dst}; +rename_instr({bs_init2=I,F,Sz,Extra,Live,Flags,Dst}) -> + {bs_init,F,{I,Extra,Flags},Live,[Sz],Dst}; +rename_instr({bs_init_bits=I,F,Sz,Extra,Live,Flags,Dst}) -> + {bs_init,F,{I,Extra,Flags},Live,[Sz],Dst}; +rename_instr({bs_append=I,F,Sz,Extra,Live,U,Src,Flags,Dst}) -> + {bs_init,F,{I,Extra,U,Flags},Live,[Sz,Src],Dst}; +rename_instr({bs_private_append=I,F,Sz,U,Src,Flags,Dst}) -> + {bs_init,F,{I,U,Flags},none,[Sz,Src],Dst}; +rename_instr(bs_init_writable=I) -> + {bs_init,{f,0},I,1,[{x,0}],{x,0}}; +rename_instr({select_val=I,Reg,Fail,{list,List}}) -> + {select,I,Reg,Fail,List}; +rename_instr({select_tuple_arity=I,Reg,Fail,{list,List}}) -> + {select,I,Reg,Fail,List}; +rename_instr(send) -> + {call_ext,2,send}; +rename_instr(I) -> I. diff --git a/lib/compiler/src/beam_asm.erl b/lib/compiler/src/beam_asm.erl index a7c8508321..98967e651f 100644 --- a/lib/compiler/src/beam_asm.erl +++ b/lib/compiler/src/beam_asm.erl @@ -387,7 +387,7 @@ encode_arg({list, List}, Dict0) -> {L, Dict} = encode_list(List, Dict0, []), {[encode(?tag_z, 1), encode(?tag_u, length(List))|L], Dict}; encode_arg({float, Float}, Dict) when is_float(Float) -> - {[encode(?tag_z, 0),<<Float:64/float>>], Dict}; + encode_arg({literal,Float}, Dict); encode_arg({fr,Fr}, Dict) -> {[encode(?tag_z, 2),encode(?tag_u, Fr)], Dict}; encode_arg({field_flags,Flags0}, Dict) -> diff --git a/lib/compiler/src/beam_block.erl b/lib/compiler/src/beam_block.erl index cd568097fa..cf5244e1ce 100644 --- a/lib/compiler/src/beam_block.erl +++ b/lib/compiler/src/beam_block.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 1999-2011. All Rights Reserved. +%% Copyright Ericsson AB 1999-2013. 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 @@ -31,19 +31,16 @@ module({Mod,Exp,Attr,Fs0,Lc0}, _Opt) -> function({function,Name,Arity,CLabel,Is0}, Lc0) -> try - %% Extra labels may thwart optimizations. - Is1 = beam_jump:remove_unused_labels(Is0), - %% Collect basic blocks and optimize them. - Is2 = blockify(Is1), - Is3 = embed_lines(Is2), - Is4 = move_allocates(Is3), - Is5 = beam_utils:live_opt(Is4), - Is6 = opt_blocks(Is5), - Is7 = beam_utils:delete_live_annos(Is6), + Is1 = blockify(Is0), + Is2 = embed_lines(Is1), + Is3 = move_allocates(Is2), + Is4 = beam_utils:live_opt(Is3), + Is5 = opt_blocks(Is4), + Is6 = beam_utils:delete_live_annos(Is5), %% Optimize bit syntax. - {Is,Lc} = bsm_opt(Is7, Lc0), + {Is,Lc} = bsm_opt(Is6, Lc0), %% Done. {{function,Name,Arity,CLabel,Is},Lc} @@ -74,9 +71,9 @@ blockify([{bs_save2,R,Point}=I,{test,is_eq_exact,_,_}=Test, %% Do other peep-hole optimizations. blockify([{test,is_atom,{f,Fail},[Reg]}=I| - [{select_val,Reg,{f,Fail}, - {list,[{atom,false},{f,_}=BrFalse, - {atom,true}=AtomTrue,{f,_}=BrTrue]}}|Is]=Is0], + [{select,select_val,Reg,{f,Fail}, + [{atom,false},{f,_}=BrFalse, + {atom,true}=AtomTrue,{f,_}=BrTrue]}|Is]=Is0], [{block,Bl}|_]=Acc) -> case is_last_bool(Bl, Reg) of false -> @@ -89,9 +86,9 @@ blockify([{test,is_atom,{f,Fail},[Reg]}=I| {test,is_eq_exact,BrFalse,[Reg,AtomTrue]}|Acc]) end; blockify([{test,is_atom,{f,Fail},[Reg]}=I| - [{select_val,Reg,{f,Fail}, - {list,[{atom,true}=AtomTrue,{f,_}=BrTrue, - {atom,false},{f,_}=BrFalse]}}|Is]=Is0], + [{select,select_val,Reg,{f,Fail}, + [{atom,true}=AtomTrue,{f,_}=BrTrue, + {atom,false},{f,_}=BrFalse]}|Is]=Is0], [{block,Bl}|_]=Acc) -> case is_last_bool(Bl, Reg) of false -> @@ -423,8 +420,8 @@ inverse_comp_op(_) -> none. %%% Evaluation of constant bit fields. %%% -is_bs_put({bs_put_integer,_,_,_,_,_}) -> true; -is_bs_put({bs_put_float,_,_,_,_,_}) -> true; +is_bs_put({bs_put,_,{bs_put_integer,_,_},_}) -> true; +is_bs_put({bs_put,_,{bs_put_float,_,_},_}) -> true; is_bs_put(_) -> false. collect_bs_puts(Is) -> @@ -439,20 +436,24 @@ collect_bs_puts_1([I|Is]=Is0, Acc) -> opt_bs_puts(Is) -> opt_bs_1(Is, []). -opt_bs_1([{bs_put_float,Fail,{integer,Sz},1,Flags0,Src}=I0|Is], Acc) -> +opt_bs_1([{bs_put,Fail, + {bs_put_float,1,Flags0},[{integer,Sz},Src]}=I0|Is], Acc) -> try eval_put_float(Src, Sz, Flags0) of <<Int:Sz>> -> Flags = force_big(Flags0), - I = {bs_put_integer,Fail,{integer,Sz},1,Flags,{integer,Int}}, + I = {bs_put,Fail,{bs_put_integer,1,Flags}, + [{integer,Sz},{integer,Int}]}, opt_bs_1([I|Is], Acc) catch error:_ -> opt_bs_1(Is, [I0|Acc]) end; -opt_bs_1([{bs_put_integer,_,{integer,8},1,_,{integer,_}}|_]=IsAll, Acc0) -> +opt_bs_1([{bs_put,_,{bs_put_integer,1,_},[{integer,8},{integer,_}]}|_]=IsAll, + Acc0) -> {Is,Acc} = bs_collect_string(IsAll, Acc0), opt_bs_1(Is, Acc); -opt_bs_1([{bs_put_integer,Fail,{integer,Sz},1,F,{integer,N}}=I|Is0], Acc) when Sz > 8 -> +opt_bs_1([{bs_put,Fail,{bs_put_integer,1,F},[{integer,Sz},{integer,N}]}=I|Is0], + Acc) when Sz > 8 -> case field_endian(F) of big -> %% We can do this optimization for any field size without risk @@ -466,14 +467,14 @@ opt_bs_1([{bs_put_integer,Fail,{integer,Sz},1,F,{integer,N}}=I|Is0], Acc) when S %% an explosion in code size. <<Int:Sz>> = <<N:Sz/little>>, Flags = force_big(F), - Is = [{bs_put_integer,Fail,{integer,Sz},1, - Flags,{integer,Int}}|Is0], + Is = [{bs_put,Fail,{bs_put_integer,1,Flags}, + [{integer,Sz},{integer,Int}]}|Is0], opt_bs_1(Is, Acc); _ -> %native or too wide little field opt_bs_1(Is0, [I|Acc]) end; -opt_bs_1([{Op,Fail,{integer,Sz},U,F,Src}|Is], Acc) when U > 1 -> - opt_bs_1([{Op,Fail,{integer,U*Sz},1,F,Src}|Is], Acc); +opt_bs_1([{bs_put,Fail,{Op,U,F},[{integer,Sz},Src]}|Is], Acc) when U > 1 -> + opt_bs_1([{bs_put,Fail,{Op,1,F},[{integer,U*Sz},Src]}|Is], Acc); opt_bs_1([I|Is], Acc) -> opt_bs_1(Is, [I|Acc]); opt_bs_1([], Acc) -> reverse(Acc). @@ -489,17 +490,17 @@ eval_put_float(Src, Sz, Flags) when Sz =< 256 -> %Only evaluate if Sz is reasona value({integer,I}) -> I; value({float,F}) -> F. -bs_collect_string(Is, [{bs_put_string,Len,{string,Str}}|Acc]) -> +bs_collect_string(Is, [{bs_put,_,{bs_put_string,Len,{string,Str}},[]}|Acc]) -> bs_coll_str_1(Is, Len, reverse(Str), Acc); bs_collect_string(Is, Acc) -> bs_coll_str_1(Is, 0, [], Acc). -bs_coll_str_1([{bs_put_integer,_,{integer,Sz},U,_,{integer,V}}|Is], +bs_coll_str_1([{bs_put,_,{bs_put_integer,U,_},[{integer,Sz},{integer,V}]}|Is], Len, StrAcc, IsAcc) when U*Sz =:= 8 -> Byte = V band 16#FF, bs_coll_str_1(Is, Len+1, [Byte|StrAcc], IsAcc); bs_coll_str_1(Is, Len, StrAcc, IsAcc) -> - {Is,[{bs_put_string,Len,{string,reverse(StrAcc)}}|IsAcc]}. + {Is,[{bs_put,{f,0},{bs_put_string,Len,{string,reverse(StrAcc)}},[]}|IsAcc]}. field_endian({field_flags,F}) -> field_endian_1(F). @@ -531,15 +532,17 @@ bs_split_int(N, Sz, Fail, Acc) -> bs_split_int_1(N, FirstByteSz, Sz, Fail, Acc). bs_split_int_1(-1, _, Sz, Fail, Acc) when Sz > 64 -> - I = {bs_put_integer,Fail,{integer,Sz},1,{field_flags,[big]},{integer,-1}}, + I = {bs_put,Fail,{bs_put_integer,1,{field_flags,[big]}}, + [{integer,Sz},{integer,-1}]}, [I|Acc]; bs_split_int_1(0, _, Sz, Fail, Acc) when Sz > 64 -> - I = {bs_put_integer,Fail,{integer,Sz},1,{field_flags,[big]},{integer,0}}, + I = {bs_put,Fail,{bs_put_integer,1,{field_flags,[big]}}, + [{integer,Sz},{integer,0}]}, [I|Acc]; bs_split_int_1(N, ByteSz, Sz, Fail, Acc) when Sz > 0 -> Mask = (1 bsl ByteSz) - 1, - I = {bs_put_integer,Fail,{integer,ByteSz},1, - {field_flags,[big]},{integer,N band Mask}}, + I = {bs_put,Fail,{bs_put_integer,1,{field_flags,[big]}}, + [{integer,ByteSz},{integer,N band Mask}]}, bs_split_int_1(N bsr ByteSz, 8, Sz-ByteSz, Fail, [I|Acc]); bs_split_int_1(_, _, _, _, Acc) -> Acc. @@ -577,9 +580,9 @@ bsm_reroute([{bs_restore2,Reg,Save}=I|Is], D, _, Acc) -> bsm_reroute(Is, D, {Reg,Save}, [I|Acc]); bsm_reroute([{label,_}=I|Is], D, S, Acc) -> bsm_reroute(Is, D, S, [I|Acc]); -bsm_reroute([{select_val,Reg,F0,{list,Lbls0}}|Is], D, {_,Save}=S, Acc0) -> +bsm_reroute([{select,select_val,Reg,F0,Lbls0}|Is], D, {_,Save}=S, Acc0) -> [F|Lbls] = bsm_subst_labels([F0|Lbls0], Save, D), - Acc = [{select_val,Reg,F,{list,Lbls}}|Acc0], + Acc = [{select,select_val,Reg,F,Lbls}|Acc0], bsm_reroute(Is, D, S, Acc); bsm_reroute([{test,TestOp,F0,TestArgs}=I|Is], D, {_,Save}=S, Acc0) -> F = bsm_subst_label(F0, Save, D), @@ -615,10 +618,6 @@ bsm_opt_2([{test,bs_skip_bits2,F,[Ctx,{integer,I1},Unit1,_]}|Is], [{test,bs_skip_bits2,F,[Ctx,{integer,I2},Unit2,Flags]}|Acc]) -> bsm_opt_2(Is, [{test,bs_skip_bits2,F, [Ctx,{integer,I1*Unit1+I2*Unit2},1,Flags]}|Acc]); -bsm_opt_2([{test,bs_match_string,F,[Ctx,Bin1]}, - {test,bs_match_string,F,[Ctx,Bin2]}|Is], Acc) -> - I = {test,bs_match_string,F,[Ctx,<<Bin1/bitstring,Bin2/bitstring>>]}, - bsm_opt_2([I|Is], Acc); bsm_opt_2([I|Is], Acc) -> bsm_opt_2(Is, [I|Acc]); bsm_opt_2([], Acc) -> reverse(Acc). diff --git a/lib/compiler/src/beam_bool.erl b/lib/compiler/src/beam_bool.erl index d9ea6f5a70..cf5455dfde 100644 --- a/lib/compiler/src/beam_bool.erl +++ b/lib/compiler/src/beam_bool.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2004-2010. All Rights Reserved. +%% Copyright Ericsson AB 2004-2013. 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 @@ -168,18 +168,18 @@ bopt_block(Reg, Fail, OldIs, [{block,Bl0}|Acc0], St0) -> end. %% ensure_opt_safe(OriginalCode, OptCode, FollowingCode, Fail, -%% ReversedPreceedingCode, State) -> ok +%% ReversedPrecedingCode, State) -> ok %% Comparing the original code to the optimized code, determine %% whether the optimized code is guaranteed to work in the same %% way as the original code. %% %% Throw an exception if the optimization is not safe. %% -ensure_opt_safe(Bl, NewCode, OldIs, Fail, PreceedingCode, St) -> +ensure_opt_safe(Bl, NewCode, OldIs, Fail, PrecedingCode, St) -> %% Here are the conditions that must be true for the %% optimization to be safe. %% - %% 1. If a register is INITIALIZED by PreceedingCode, + %% 1. If a register is INITIALIZED by PrecedingCode, %% then if that register assigned a value in the original %% code, but not in the optimized code, it must be UNUSED or KILLED %% in the code that follows. @@ -190,29 +190,50 @@ ensure_opt_safe(Bl, NewCode, OldIs, Fail, PreceedingCode, St) -> %% by the code that follows. %% %% 3. Any register that is assigned a value in the optimized - %% code must be UNUSED or KILLED in the following code - %% (because the register might be assigned the wrong value, - %% and even if the value is right it might no longer be - %% assigned on *all* paths leading to its use). + %% code must be UNUSED or KILLED in the following code, + %% unless we can be sure that it is always assigned the same + %% value. - InitInPreceeding = initialized_regs(PreceedingCode), + InitInPreceding = initialized_regs(PrecedingCode), PrevDst = dst_regs(Bl), NewDst = dst_regs(NewCode), NotSet = ordsets:subtract(PrevDst, NewDst), - MustBeKilled = ordsets:subtract(NotSet, InitInPreceeding), - MustBeUnused = ordsets:subtract(ordsets:union(NotSet, NewDst), MustBeKilled), + MustBeKilled = ordsets:subtract(NotSet, InitInPreceding), case all_killed(MustBeKilled, OldIs, Fail, St) of false -> throw(all_registers_not_killed); true -> ok end, + Same = assigned_same_value(Bl, NewCode), + MustBeUnused = ordsets:subtract(ordsets:union(NotSet, NewDst), + ordsets:union(MustBeKilled, Same)), case none_used(MustBeUnused, OldIs, Fail, St) of false -> throw(registers_used); true -> ok end, ok. +%% assigned_same_value(OldCode, NewCodeReversed) -> [DestinationRegs] +%% Return an ordset with a list of all y registers that are always +%% assigned the same value in the old and new code. Currently, we +%% are very conservative in that we only consider identical move +%% instructions in the same order. +%% +assigned_same_value(Old, New) -> + case reverse(New) of + [{block,Bl}|_] -> + assigned_same_value(Old, Bl, []); + _ -> + ordsets:new() + end. + +assigned_same_value([{set,[{y,_}=D],[S],move}|T1], + [{set,[{y,_}=D],[S],move}|T2], Acc) -> + assigned_same_value(T1, T2, [D|Acc]); +assigned_same_value(_, _, Acc) -> + ordsets:from_list(Acc). + update_fail_label([{set,_,_,move}=I|Is], Fail, Acc) -> update_fail_label(Is, Fail, [I|Acc]); update_fail_label([{set,Ds,As,{bif,N,{f,_}}}|Is], Fail, Acc) -> diff --git a/lib/compiler/src/beam_bsm.erl b/lib/compiler/src/beam_bsm.erl index 1217f7f777..fdfcb08125 100644 --- a/lib/compiler/src/beam_bsm.erl +++ b/lib/compiler/src/beam_bsm.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2007-2011. All Rights Reserved. +%% Copyright Ericsson AB 2007-2013. 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 @@ -204,16 +204,6 @@ btb_reaches_match_1(Is, Regs, D) -> btb_reaches_match_2([{block,Bl}|Is], Regs0, D) -> Regs = btb_reaches_match_block(Bl, Regs0), btb_reaches_match_1(Is, Regs, D); -btb_reaches_match_2([{call_only,Arity,{f,Lbl}}|_], Regs0, D) -> - Regs = btb_kill_not_live(Arity, Regs0), - btb_tail_call(Lbl, Regs, D); -btb_reaches_match_2([{call_ext_only,Arity,Func}|_], Regs0, D) -> - Regs = btb_kill_not_live(Arity, Regs0), - btb_tail_call(Func, Regs, D); -btb_reaches_match_2([{call_last,Arity,{f,Lbl},_}|_], Regs0, D) -> - Regs1 = btb_kill_not_live(Arity, Regs0), - Regs = btb_kill_yregs(Regs1), - btb_tail_call(Lbl, Regs, D); btb_reaches_match_2([{call,Arity,{f,Lbl}}|Is], Regs, D) -> btb_call(Arity, Lbl, Regs, Is, D); btb_reaches_match_2([{apply,Arity}|Is], Regs, D) -> @@ -222,19 +212,16 @@ btb_reaches_match_2([{call_fun,Live}=I|Is], Regs, D) -> btb_call(Live, I, Regs, Is, D); btb_reaches_match_2([{make_fun2,_,_,_,Live}|Is], Regs, D) -> btb_call(Live, make_fun2, Regs, Is, D); -btb_reaches_match_2([{call_ext,Arity,{extfunc,Mod,Name,Arity}=Func}|Is], Regs0, D) -> +btb_reaches_match_2([{call_ext,Arity,Func}=I|Is], Regs0, D) -> %% Allow us scanning beyond the call in case the match %% context is saved on the stack. - case erl_bifs:is_exit_bif(Mod, Name, Arity) of + case beam_jump:is_exit_instruction(I) of false -> btb_call(Arity, Func, Regs0, Is, D); true -> Regs = btb_kill_not_live(Arity, Regs0), btb_tail_call(Func, Regs, D) end; -btb_reaches_match_2([{call_ext_last,Arity,_,_}=I|_], Regs, D) -> - btb_ensure_not_used(btb_regs_from_arity(Arity), I, Regs), - D; btb_reaches_match_2([{kill,Y}|Is], Regs, D) -> btb_reaches_match_1(Is, btb_kill([Y], Regs), D); btb_reaches_match_2([{deallocate,_}|Is], Regs0, D) -> @@ -254,21 +241,45 @@ btb_reaches_match_2([{bif,_,{f,F},Ss,Dst}=I|Is], Regs0, D0) -> Regs = btb_kill([Dst], Regs0), D = btb_follow_branch(F, Regs, D0), btb_reaches_match_1(Is, Regs, D); -btb_reaches_match_2([{test,bs_start_match2,_,_,[Ctx,_],Ctx}|Is], Regs, D) -> - case btb_context_regs(Regs) of - [Ctx] -> - D; - CtxRegs -> - case member(Ctx, CtxRegs) of - false -> btb_reaches_match_2(Is, Regs, D); - true -> btb_error(unsuitable_bs_start_match) +btb_reaches_match_2([{test,bs_start_match2,{f,F},Live,[Ctx,_],Ctx}=I|Is], + Regs0, D0) -> + CtxRegs = btb_context_regs(Regs0), + case member(Ctx, CtxRegs) of + false -> + %% This bs_start_match2 instruction does not use "our" + %% match state. Therefore we can continue the search + %% for another bs_start_match2 instruction. + D = btb_follow_branch(F, Regs0, D0), + Regs = btb_kill_not_live(Live, Regs0), + btb_reaches_match_2(Is, Regs, D); + true -> + %% OK. This instruction will use "our" match state, + %% but we must make sure that all other copies of the + %% match state are killed in the code that follows + %% the instruction. (We know that the fail branch cannot + %% be taken in this case.) + OtherCtxRegs = CtxRegs -- [Ctx], + case btb_are_all_unused(OtherCtxRegs, Is, D0) of + false -> btb_error({OtherCtxRegs,not_all_unused_after,I}); + true -> D0 end end; -btb_reaches_match_2([{test,bs_start_match2,_,_,[Bin,_],Ctx}|Is], Regs, D) -> - CtxRegs = btb_context_regs(Regs), +btb_reaches_match_2([{test,bs_start_match2,{f,F},Live,[Bin,_],Ctx}|Is], + Regs0, D0) -> + CtxRegs = btb_context_regs(Regs0), case member(Bin, CtxRegs) orelse member(Ctx, CtxRegs) of - false -> btb_reaches_match_2(Is, Regs, D); - true -> btb_error(unsuitable_bs_start_match) + false -> + %% This bs_start_match2 does not reference any copy of the + %% match state. Therefore it can safely be passed on the + %% way to another (perhaps more suitable) bs_start_match2 + %% instruction. + D = btb_follow_branch(F, Regs0, D0), + Regs = btb_kill_not_live(Live, Regs0), + btb_reaches_match_2(Is, Regs, D); + true -> + %% This variant of the bs_start_match2 instruction does + %% not accept a match state as source. + btb_error(unsuitable_bs_start_match) end; btb_reaches_match_2([{test,_,{f,F},Ss}=I|Is], Regs, D0) -> btb_ensure_not_used(Ss, I, Regs), @@ -278,12 +289,7 @@ btb_reaches_match_2([{test,_,{f,F},_,Ss,_}=I|Is], Regs, D0) -> btb_ensure_not_used(Ss, I, Regs), D = btb_follow_branch(F, Regs, D0), btb_reaches_match_1(Is, Regs, D); -btb_reaches_match_2([{select_val,Src,{f,F},{list,Conds}}=I|Is], Regs, D0) -> - btb_ensure_not_used([Src], I, Regs), - D1 = btb_follow_branch(F, Regs, D0), - D = btb_follow_branches(Conds, Regs, D1), - btb_reaches_match_1(Is, Regs, D); -btb_reaches_match_2([{select_tuple_arity,Src,{f,F},{list,Conds}}=I|Is], Regs, D0) -> +btb_reaches_match_2([{select,_,Src,{f,F},Conds}=I|Is], Regs, D0) -> btb_ensure_not_used([Src], I, Regs), D1 = btb_follow_branch(F, Regs, D0), D = btb_follow_branches(Conds, Regs, D1), @@ -293,46 +299,11 @@ btb_reaches_match_2([{jump,{f,Lbl}}|_], Regs, #btb{index=Li}=D) -> btb_reaches_match_2(Is, Regs, D); btb_reaches_match_2([{label,_}|Is], Regs, D) -> btb_reaches_match_2(Is, Regs, D); -btb_reaches_match_2([{bs_add,{f,0},_,Dst}|Is], Regs, D) -> - btb_reaches_match_1(Is, btb_kill([Dst], Regs), D); -btb_reaches_match_2([bs_init_writable|Is], Regs0, D) -> - Regs = btb_kill_not_live(0, Regs0), - btb_reaches_match_1(Is, Regs, D); -btb_reaches_match_2([{bs_init2,{f,0},_,_,_,_,Dst}|Is], Regs, D) -> - btb_reaches_match_1(Is, btb_kill([Dst], Regs), D); -btb_reaches_match_2([{bs_init_bits,{f,0},_,_,_,_,Dst}|Is], Regs, D) -> - btb_reaches_match_1(Is, btb_kill([Dst], Regs), D); -btb_reaches_match_2([{bs_append,{f,0},_,_,_,_,Src,_,Dst}=I|Is], Regs, D) -> - btb_ensure_not_used([Src], I, Regs), - btb_reaches_match_1(Is, btb_kill([Dst], Regs), D); -btb_reaches_match_2([{bs_private_append,{f,0},_,_,Src,_,Dst}=I|Is], Regs, D) -> - btb_ensure_not_used([Src], I, Regs), - btb_reaches_match_1(Is, btb_kill([Dst], Regs), D); -btb_reaches_match_2([{bs_put_integer,{f,0},_,_,_,Src}=I|Is], Regs, D) -> - btb_ensure_not_used([Src], I, Regs), - btb_reaches_match_1(Is, Regs, D); -btb_reaches_match_2([{bs_put_float,{f,0},_,_,_,Src}=I|Is], Regs, D) -> - btb_ensure_not_used([Src], I, Regs), - btb_reaches_match_1(Is, Regs, D); -btb_reaches_match_2([{bs_put_binary,{f,0},_,_,_,Src}=I|Is], Regs, D) -> - btb_ensure_not_used([Src], I, Regs), - btb_reaches_match_1(Is, Regs, D); -btb_reaches_match_2([{bs_put_string,_,_}|Is], Regs, D) -> - btb_reaches_match_1(Is, Regs, D); -btb_reaches_match_2([{bs_utf8_size,_,Src,Dst}=I|Is], Regs, D) -> - btb_ensure_not_used([Src], I, Regs), - btb_reaches_match_1(Is, btb_kill([Dst], Regs), D); -btb_reaches_match_2([{bs_utf16_size,_,Src,Dst}=I|Is], Regs, D) -> - btb_ensure_not_used([Src], I, Regs), +btb_reaches_match_2([{bs_init,{f,0},_,_,Ss,Dst}=I|Is], Regs, D) -> + btb_ensure_not_used(Ss, I, Regs), btb_reaches_match_1(Is, btb_kill([Dst], Regs), D); -btb_reaches_match_2([{bs_put_utf8,_,_,Src}=I|Is], Regs, D) -> - btb_ensure_not_used([Src], I, Regs), - btb_reaches_match_1(Is, Regs, D); -btb_reaches_match_2([{bs_put_utf16,_,_,Src}=I|Is], Regs, D) -> - btb_ensure_not_used([Src], I, Regs), - btb_reaches_match_1(Is, Regs, D); -btb_reaches_match_2([{bs_put_utf32,_,_,Src}=I|Is], Regs, D) -> - btb_ensure_not_used([Src], I, Regs), +btb_reaches_match_2([{bs_put,{f,0},_,Ss}=I|Is], Regs, D) -> + btb_ensure_not_used(Ss, I, Regs), btb_reaches_match_1(Is, Regs, D); btb_reaches_match_2([{bs_restore2,Src,_}=I|Is], Regs0, D) -> case btb_contains_context(Src, Regs0) of @@ -340,11 +311,11 @@ btb_reaches_match_2([{bs_restore2,Src,_}=I|Is], Regs0, D) -> btb_reaches_match_1(Is, Regs0, D); true -> %% Check that all other copies of the context registers - %% are killed by the following instructions. + %% are unused by the following instructions. Regs = btb_kill([Src], Regs0), CtxRegs = btb_context_regs(Regs), - case btb_are_all_killed(CtxRegs, Is, D) of - false -> btb_error({CtxRegs,not_all_killed_after,I}); + case btb_are_all_unused(CtxRegs, Is, D) of + false -> btb_error({CtxRegs,not_all_unused_after,I}); true -> D#btb{must_not_save=true} end end; @@ -354,11 +325,11 @@ btb_reaches_match_2([{bs_context_to_binary,Src}=I|Is], Regs0, D) -> btb_reaches_match_1(Is, Regs0, D); true -> %% Check that all other copies of the context registers - %% are killed by the following instructions. + %% are unused by the following instructions. Regs = btb_kill([Src], Regs0), CtxRegs = btb_context_regs(Regs), - case btb_are_all_killed(CtxRegs, Is, D) of - false -> btb_error({CtxRegs,not_all_killed_after,I}); + case btb_are_all_unused(CtxRegs, Is, D) of + false -> btb_error({CtxRegs,not_all_unused_after,I}); true -> D#btb{must_not_save=true} end end; @@ -389,13 +360,16 @@ btb_call(Arity, Lbl, Regs0, Is, D0) -> %% First handle the call as if it were a tail call. D = btb_tail_call(Lbl, Regs, D0), - %% No problem so far, but now we must make sure that - %% we don't have any copies of the match context - %% tucked away in an y register. + %% No problem so far (the called function can handle a + %% match context). Now we must make sure that the rest + %% of this function following the call does not attempt + %% to use the match context in case there is a copy + %% tucked away in a y register. RegList = btb_context_regs(Regs), - case [R || {y,_}=R <- RegList] of - [] -> D; - [_|_] -> btb_error({multiple_uses,RegList}) + YRegs = [R || {y,_}=R <- RegList], + case btb_are_all_unused(YRegs, Is, D) of + true -> D; + false -> btb_error({multiple_uses,RegList}) end; true -> %% No match context in any x register. It could have been @@ -475,21 +449,12 @@ btb_reaches_match_block([{set,Ds,Ss,_}=I|Is], Regs0) -> btb_reaches_match_block([], Regs) -> Regs. -%% btb_regs_from_arity(Arity) -> [Register]) -%% Create a list of x registers from a function arity. - -btb_regs_from_arity(Arity) -> - btb_regs_from_arity_1(Arity, []). - -btb_regs_from_arity_1(0, Acc) -> Acc; -btb_regs_from_arity_1(N, Acc) -> btb_regs_from_arity_1(N-1, [{x,N-1}|Acc]). - %% btb_are_all_killed([Register], [Instruction], D) -> true|false -%% Test whether all of the register are killed in the instruction stream. +%% Test whether all of the register are unused in the instruction stream. -btb_are_all_killed(RegList, Is, #btb{index=Li}) -> +btb_are_all_unused(RegList, Is, #btb{index=Li}) -> all(fun(R) -> - beam_utils:is_killed(R, Is, Li) + beam_utils:is_not_used(R, Is, Li) end, RegList). %% btp_regs_from_list([Register]) -> RegisterSet. diff --git a/lib/compiler/src/beam_clean.erl b/lib/compiler/src/beam_clean.erl index a7994ab3b3..e208ffec1f 100644 --- a/lib/compiler/src/beam_clean.erl +++ b/lib/compiler/src/beam_clean.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2000-2011. All Rights Reserved. +%% Copyright Ericsson AB 2000-2013. 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 @@ -74,10 +74,6 @@ find_all_used([], _All, Used) -> Used. update_work_list([{call,_,{f,L}}|Is], Sets) -> update_work_list(Is, add_to_work_list(L, Sets)); -update_work_list([{call_last,_,{f,L},_}|Is], Sets) -> - update_work_list(Is, add_to_work_list(L, Sets)); -update_work_list([{call_only,_,{f,L}}|Is], Sets) -> - update_work_list(Is, add_to_work_list(L, Sets)); update_work_list([{make_fun2,{f,L},_,_,_}|Is], Sets) -> update_work_list(Is, add_to_work_list(L, Sets)); update_work_list([_|Is], Sets) -> @@ -200,7 +196,7 @@ replace([{test,Test,{f,Lbl},Ops}|Is], Acc, D) -> replace(Is, [{test,Test,{f,label(Lbl, D)},Ops}|Acc], D); replace([{test,Test,{f,Lbl},Live,Ops,Dst}|Is], Acc, D) -> replace(Is, [{test,Test,{f,label(Lbl, D)},Live,Ops,Dst}|Acc], D); -replace([{select_val,R,{f,Fail0},{list,Vls0}}|Is], Acc, D) -> +replace([{select,I,R,{f,Fail0},Vls0}|Is], Acc, D) -> Vls1 = map(fun ({f,L}) -> {f,label(L, D)}; (Other) -> Other end, Vls0), Fail = label(Fail0, D), @@ -210,12 +206,8 @@ replace([{select_val,R,{f,Fail0},{list,Vls0}}|Is], Acc, D) -> %% Convert to a plain jump. replace(Is, [{jump,{f,Fail}}|Acc], D); Vls -> - replace(Is, [{select_val,R,{f,Fail},{list,Vls}}|Acc], D) + replace(Is, [{select,I,R,{f,Fail},Vls}|Acc], D) end; -replace([{select_tuple_arity,R,{f,Fail},{list,Vls0}}|Is], Acc, D) -> - Vls = map(fun ({f,L}) -> {f,label(L, D)}; - (Other) -> Other end, Vls0), - replace(Is, [{select_tuple_arity,R,{f,label(Fail, D)},{list,Vls}}|Acc], D); replace([{'try',R,{f,Lbl}}|Is], Acc, D) -> replace(Is, [{'try',R,{f,label(Lbl, D)}}|Acc], D); replace([{'catch',R,{f,Lbl}}|Is], Acc, D) -> @@ -236,37 +228,12 @@ replace([{gc_bif,Name,{f,Lbl},Live,As,R}|Is], Acc, D) when Lbl =/= 0 -> replace(Is, [{gc_bif,Name,{f,label(Lbl, D)},Live,As,R}|Acc], D); replace([{call,Ar,{f,Lbl}}|Is], Acc, D) -> replace(Is, [{call,Ar,{f,label(Lbl,D)}}|Acc], D); -replace([{call_last,Ar,{f,Lbl},N}|Is], Acc, D) -> - replace(Is, [{call_last,Ar,{f,label(Lbl,D)},N}|Acc], D); -replace([{call_only,Ar,{f,Lbl}}|Is], Acc, D) -> - replace(Is, [{call_only,Ar,{f,label(Lbl, D)}}|Acc], D); replace([{make_fun2,{f,Lbl},U1,U2,U3}|Is], Acc, D) -> replace(Is, [{make_fun2,{f,label(Lbl, D)},U1,U2,U3}|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([{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([I|Is], Acc, D) -> replace(Is, [I|Acc], D); replace([], Acc, _) -> Acc. diff --git a/lib/compiler/src/beam_dead.erl b/lib/compiler/src/beam_dead.erl index 5f12a98f09..b15adfa889 100644 --- a/lib/compiler/src/beam_dead.erl +++ b/lib/compiler/src/beam_dead.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2002-2011. All Rights Reserved. +%% Copyright Ericsson AB 2002-2013. 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 @@ -182,7 +182,7 @@ forward(Is, Lc) -> forward([{block,[]}|Is], D, Lc, Acc) -> %% Empty blocks can prevent optimizations. forward(Is, D, Lc, Acc); -forward([{select_val,Reg,_,{list,List}}=I|Is], D0, Lc, Acc) -> +forward([{select,select_val,Reg,_,List}=I|Is], D0, Lc, Acc) -> D = update_value_dict(List, Reg, D0), forward(Is, D, Lc, [I|Acc]); forward([{label,Lbl}=LblI,{block,[{set,[Dst],[Lit],move}|BlkIs]}=Blk|Is], D, Lc, Acc) -> @@ -271,11 +271,11 @@ backward([{test,is_eq_exact,Fail,[Dst,{integer,Arity}]}=I| end; backward([{label,Lbl}=L|Is], D, Acc) -> backward(Is, beam_utils:index_label(Lbl, Acc, D), [L|Acc]); -backward([{select_val,Reg,{f,Fail0},{list,List0}}|Is], D, Acc) -> +backward([{select,select_val,Reg,{f,Fail0},List0}|Is], D, Acc) -> List = shortcut_select_list(List0, Reg, D, []), Fail1 = shortcut_label(Fail0, D), Fail = shortcut_bs_test(Fail1, Is, D), - Sel = {select_val,Reg,{f,Fail},{list,List}}, + 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 @@ -382,7 +382,7 @@ 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_val,Reg,{f,Fail},{list,Map}}|_] -> + [{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) -> @@ -472,10 +472,10 @@ combine_eqs(To, [Reg,{Type,_}=Lit1]=Ops, D, [{label,L1}|_]) case beam_utils:code_at(To, D) of [{test,is_eq_exact,{f,F2},[Reg,{Type,_}=Lit2]}, {label,L2}|_] when Lit1 =/= Lit2 -> - {select_val,Reg,{f,F2},{list,[Lit1,{f,L1},Lit2,{f,L2}]}}; - [{select_val,Reg,{f,F2},{list,[{Type,_}|_]=List0}}|_] -> + {select,select_val,Reg,{f,F2},[Lit1,{f,L1},Lit2,{f,L2}]}; + [{select,select_val,Reg,{f,F2},[{Type,_}|_]=List0}|_] -> List = remove_from_list(Lit1, List0), - {select_val,Reg,{f,F2},{list,[Lit1,{f,L1}|List]}}; + {select,select_val,Reg,{f,F2},[Lit1,{f,L1}|List]}; _Is -> {test,is_eq_exact,{f,To},Ops} end; @@ -527,6 +527,8 @@ count_bits_matched([{test,_,_,_,[_,Sz,U,{field_flags,_}],_}|Is], SavePoint, Bits {integer,N} -> count_bits_matched(Is, SavePoint, Bits+N*U); _ -> count_bits_matched(Is, SavePoint, Bits) end; +count_bits_matched([{test,bs_match_string,_,[_,Bits,_]}|Is], SavePoint, Bits0) -> + count_bits_matched(Is, SavePoint, Bits0+Bits); count_bits_matched([{test,_,_,_}|Is], SavePoint, Bits) -> count_bits_matched(Is, SavePoint, Bits); count_bits_matched([{bs_save2,Reg,SavePoint}|_], {Reg,SavePoint}, Bits) -> diff --git a/lib/compiler/src/beam_dict.erl b/lib/compiler/src/beam_dict.erl index 531968b3c8..212b9fb03a 100644 --- a/lib/compiler/src/beam_dict.erl +++ b/lib/compiler/src/beam_dict.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 1998-2011. All Rights Reserved. +%% Copyright Ericsson AB 1998-2013. 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 diff --git a/lib/compiler/src/beam_disasm.erl b/lib/compiler/src/beam_disasm.erl index 62bdc74cc8..67d756c45c 100644 --- a/lib/compiler/src/beam_disasm.erl +++ b/lib/compiler/src/beam_disasm.erl @@ -512,7 +512,12 @@ decode_z_tagged(Tag,B,Bs,Literals) when (B band 16#08) =:= 0 -> decode_alloc_list(Bs, Literals); 4 -> % literal {{u,LitIndex},RestBs} = decode_arg(Bs), - {{literal,gb_trees:get(LitIndex, Literals)},RestBs}; + case gb_trees:get(LitIndex, Literals) of + Float when is_float(Float) -> + {{float,Float},RestBs}; + Literal -> + {{literal,Literal},RestBs} + end; _ -> ?exit({decode_z_tagged,{invalid_extended_tag,N}}) end; diff --git a/lib/compiler/src/beam_except.erl b/lib/compiler/src/beam_except.erl index fb1a43cd9e..e5ec1bd904 100644 --- a/lib/compiler/src/beam_except.erl +++ b/lib/compiler/src/beam_except.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2011. All Rights Reserved. +%% Copyright Ericsson AB 2011-2013. 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 @@ -49,13 +49,14 @@ function({function,Name,Arity,CLabel,Is0}) -> -record(st, {lbl, %func_info label - loc %location for func_info + loc, %location for func_info + arity %arity for function }). function_1(Is0) -> case Is0 of - [{label,Lbl},{line,Loc}|_] -> - St = #st{lbl=Lbl,loc=Loc}, + [{label,Lbl},{line,Loc},{func_info,_,_,Arity}|_] -> + St = #st{lbl=Lbl,loc=Loc,arity=Arity}, translate(Is0, St, []); [{label,_}|_] -> %% No line numbers. The source must be a .S file. @@ -65,10 +66,6 @@ function_1(Is0) -> translate([{call_ext,Ar,{extfunc,erlang,error,Ar}}=I|Is], St, Acc) -> translate_1(Ar, I, Is, St, Acc); -translate([{call_ext_only,Ar,{extfunc,erlang,error,Ar}}=I|Is], St, Acc) -> - translate_1(Ar, I, Is, St, Acc); -translate([{call_ext_last,Ar,{extfunc,erlang,error,Ar},_}=I|Is], St, Acc) -> - translate_1(Ar, I, Is, St, Acc); translate([I|Is], St, Acc) -> translate(Is, St, [I|Acc]); translate([], _, Acc) -> @@ -78,14 +75,14 @@ translate_1(Ar, I, Is, St, [{line,_}=Line|Acc1]=Acc0) -> case dig_out(Ar, Acc1) of no -> translate(Is, St, [I|Acc0]); - {yes,function_clause,Acc2} -> + {yes,{function_clause,Arity},Acc2} -> case {Line,St} of - {{line,Loc},#st{lbl=Fi,loc=Loc}} -> + {{line,Loc},#st{lbl=Fi,loc=Loc,arity=Arity}} -> Instr = {jump,{f,Fi}}, translate(Is, St, [Instr|Acc2]); {_,_} -> %% This must be "error(function_clause, Args)" in - %% the Erlang source code. Don't translate. + %% the Erlang source code or a fun. Don't translate. translate(Is, St, [I|Acc0]) end; {yes,Instr,Acc2} -> @@ -139,11 +136,16 @@ fix_block(Is0, Words) -> [{set,[],[],{alloc,Live,{F1,F2,Needed-Words,F3}}}|Is]. dig_out_block_fc([{set,[],[],{alloc,Live,_}}|Bl]) -> - dig_out_fc(Bl, Live-1, nil); + case dig_out_fc(Bl, Live-1, nil) of + no -> + no; + yes -> + {yes,{function_clause,Live}} + end; dig_out_block_fc(_) -> no. dig_out_fc([{set,[Dst],[{x,Reg},Dst0],put_list}|Is], Reg, Dst0) -> dig_out_fc(Is, Reg-1, Dst); dig_out_fc([{set,[{x,0}],[{atom,function_clause}],move}], -1, {x,1}) -> - {yes,function_clause}; + yes; dig_out_fc(_, _, _) -> no. diff --git a/lib/compiler/src/beam_flatten.erl b/lib/compiler/src/beam_flatten.erl index 6c7cb849aa..25428c0c10 100644 --- a/lib/compiler/src/beam_flatten.erl +++ b/lib/compiler/src/beam_flatten.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 1999-2010. All Rights Reserved. +%% Copyright Ericsson AB 1999-2013. 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 @@ -79,49 +79,28 @@ norm_allocate({nozero,Ns,Nh,Inits}, Regs) -> %% insert_alloc_in_bs_init(ReverseInstructionStream, AllocationInfo) -> %% impossible | ReverseInstructionStream' -%% A bs_init2/6 instruction should not be followed by a test heap instruction. +%% A bs_init/6 instruction should not be followed by a test heap instruction. %% Given the AllocationInfo from a test heap instruction, merge the -%% allocation amounts into the previous bs_init2/6 instruction (if any). +%% allocation amounts into the previous bs_init/6 instruction (if any). %% -insert_alloc_in_bs_init([I|_]=Is, Alloc) -> - case is_bs_constructor(I) of - false -> impossible; - true -> insert_alloc_1(Is, Alloc, []) - end. - -insert_alloc_1([{bs_init2=Op,Fail,Bs,Ws1,Regs,F,Dst}|Is], {_,nostack,Ws2,[]}, Acc) -> - Al = beam_utils:combine_heap_needs(Ws1, Ws2), - I = {Op,Fail,Bs,Al,Regs,F,Dst}, - reverse(Acc, [I|Is]); -insert_alloc_1([{bs_init_bits=Op,Fail,Bs,Ws1,Regs,F,Dst}|Is], {_,nostack,Ws2,[]}, Acc) -> - Al = beam_utils:combine_heap_needs(Ws1, Ws2), - I = {Op,Fail,Bs,Al,Regs,F,Dst}, - reverse(Acc, [I|Is]); -insert_alloc_1([{bs_append,Fail,Sz,Ws1,Regs,U,Bin,Fl,Dst}|Is], - {_,nostack,Ws2,[]}, Acc) -> +insert_alloc_in_bs_init([{bs_put,_,_,_}=I|Is], Alloc) -> + %% The instruction sequence ends with an bs_put/4 instruction. + %% We'll need to search backwards for the bs_init/6 instruction. + insert_alloc_1(Is, Alloc, [I]); +insert_alloc_in_bs_init(_, _) -> impossible. + +insert_alloc_1([{bs_init=Op,Fail,Info0,Live,Ss,Dst}|Is], + {_,nostack,Ws2,[]}, Acc) when is_integer(Live) -> + %% The number of extra heap words is always in the second position + %% in the Info tuple. + Ws1 = element(2, Info0), Al = beam_utils:combine_heap_needs(Ws1, Ws2), - I = {bs_append,Fail,Sz,Al,Regs,U,Bin,Fl,Dst}, + Info = setelement(2, Info0, Al), + I = {Op,Fail,Info,Live,Ss,Dst}, reverse(Acc, [I|Is]); -insert_alloc_1([I|Is], Alloc, Acc) -> +insert_alloc_1([{bs_put,_,_,_}=I|Is], Alloc, Acc) -> insert_alloc_1(Is, Alloc, [I|Acc]). - -%% is_bs_constructor(Instruction) -> true|false. -%% Test whether the instruction is a bit syntax construction -%% instruction that can occur at the end of a bit syntax -%% construction. (Since an empty binary would be expressed -%% as a literal, the bs_init2/6 instruction will not occur -%% at the end and therefore it is no need to test for it here.) -%% -is_bs_constructor({bs_put_integer,_,_,_,_,_}) -> true; -is_bs_constructor({bs_put_utf8,_,_,_}) -> true; -is_bs_constructor({bs_put_utf16,_,_,_}) -> true; -is_bs_constructor({bs_put_utf32,_,_,_}) -> true; -is_bs_constructor({bs_put_float,_,_,_,_,_}) -> true; -is_bs_constructor({bs_put_binary,_,_,_,_,_}) -> true; -is_bs_constructor({bs_put_string,_,_}) -> true; -is_bs_constructor(_) -> false. - %% opt(Is0) -> Is %% Simple peep-hole optimization to move a {move,Any,{x,0}} past %% any kill up to the next call instruction. (To give the loader diff --git a/lib/compiler/src/beam_jump.erl b/lib/compiler/src/beam_jump.erl index db67d24514..b29a3565e4 100644 --- a/lib/compiler/src/beam_jump.erl +++ b/lib/compiler/src/beam_jump.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 1999-2011. All Rights Reserved. +%% Copyright Ericsson AB 1999-2013. 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 @@ -20,7 +20,7 @@ -module(beam_jump). --export([module/2,module_labels/1, +-export([module/2, is_unreachable_after/1,is_exit_instruction/1, remove_unused_labels/1,is_label_used_in/2]). @@ -46,10 +46,13 @@ %%% such as a jump that never transfers control to the instruction %%% following it. %%% -%%% (2) case_end, if_end, and badmatch, and function calls that cause an -%%% exit (such as calls to exit/1) are moved to the end of the function. -%%% The purpose is to allow further optimizations at the place from -%%% which the code was moved. +%%% (2) Short sequences starting with a label and ending in case_end, if_end, +%%% and badmatch, and function calls that cause an exit (such as calls +%%% to exit/1) are moved to the end of the function, but only if the +%%% the block is not entered via a fallthrough. The purpose of this move +%%% is to allow further optimizations at the place from which the +%%% code was moved (a jump around the block could be replaced with a +%%% fallthrough). %%% %%% (3) Any unreachable code is removed. Unreachable code is code %%% after jump, call_last and other instructions which never @@ -130,13 +133,6 @@ module({Mod,Exp,Attr,Fs0,Lc}, _Opt) -> Fs = [function(F) || F <- Fs0], {ok,{Mod,Exp,Attr,Fs,Lc}}. -module_labels({Mod,Exp,Attr,Fs,Lc}) -> - {Mod,Exp,Attr,[function_labels(F) || F <- Fs],Lc}. - -function_labels({function,Name,Arity,CLabel,Asm0}) -> - Asm = remove_unused_labels(Asm0), - {function,Name,Arity,CLabel,Asm}. - %% function(Function) -> Function' %% Optimize jumps and branches. %% @@ -224,6 +220,8 @@ extract_seq([{line,_}=Line|Is], Acc) -> extract_seq(Is, [Line|Acc]); extract_seq([{block,_}=Bl|Is], Acc) -> extract_seq_1(Is, [Bl|Acc]); +extract_seq([{bs_context_to_binary,_}=I|Is], Acc) -> + extract_seq_1(Is, [I|Acc]); extract_seq([{label,_}|_]=Is, Acc) -> extract_seq_1(Is, Acc); extract_seq(_, _) -> no. @@ -232,6 +230,9 @@ extract_seq_1([{line,_}=Line|Is], Acc) -> extract_seq_1(Is, [Line|Acc]); extract_seq_1([{label,_},{func_info,_,_,_}|_], _) -> no; +extract_seq_1([{label,Lbl},{jump,{f,Lbl}}|_], _) -> + %% Don't move a sequence which have a fallthrough entering it. + no; extract_seq_1([{label,_}=Lbl|Is], Acc) -> {yes,[Lbl|Acc],Is}; extract_seq_1(_, _) -> no. @@ -260,43 +261,39 @@ find_fixpoint(OptFun, Is0) -> Is -> find_fixpoint(OptFun, Is) end. -opt([{test,Test0,{f,Lnum}=Lbl,Ops}=I|Is0], Acc, St) -> - case Is0 of - [{jump,{f,Lnum}}|Is] -> - %% We have - %% Test Label Ops - %% jump Label - %% The test instruction is definitely not needed. - %% The jump instruction is not needed if there is - %% a definition of Label following the jump instruction. - case is_label_defined(Is, Lnum) of - false -> - %% The jump instruction is still needed. - opt(Is0, [I|Acc], label_used(Lbl, St)); - true -> - %% Neither the test nor the jump are needed. - opt(Is, Acc, St) - end; - [{jump,To}|Is] -> - case is_label_defined(Is, Lnum) of - false -> +opt([{test,_,{f,L}=Lbl,_}=I|[{jump,{f,L}}|_]=Is], Acc, St) -> + %% We have + %% Test Label Ops + %% jump Label + %% The test instruction is not needed if the test is pure + %% (it modifies neither registers nor bit syntax state). + case beam_utils:is_pure_test(I) of + false -> + %% Test is not pure; we must keep it. + opt(Is, [I|Acc], label_used(Lbl, St)); + true -> + %% The test is pure and its failure label is the same + %% as in the jump that follows -- thus it is not needed. + opt(Is, Acc, St) + end; +opt([{test,Test0,{f,L}=Lbl,Ops}=I|[{jump,To}|Is]=Is0], Acc, St) -> + case is_label_defined(Is, L) of + false -> + opt(Is0, [I|Acc], label_used(Lbl, St)); + true -> + case invert_test(Test0) of + not_possible -> opt(Is0, [I|Acc], label_used(Lbl, St)); - true -> - case invert_test(Test0) of - not_possible -> - opt(Is0, [I|Acc], label_used(Lbl, St)); - Test -> - opt([{test,Test,To,Ops}|Is], Acc, St) - end - end; - _Other -> - opt(Is0, [I|Acc], label_used(Lbl, St)) + Test -> + %% Invert the test and remove the jump. + opt([{test,Test,To,Ops}|Is], Acc, St) + end end; +opt([{test,_,{f,_}=Lbl,_}=I|Is], Acc, St) -> + opt(Is, [I|Acc], label_used(Lbl, St)); opt([{test,_,{f,_}=Lbl,_,_,_}=I|Is], Acc, St) -> opt(Is, [I|Acc], label_used(Lbl, St)); -opt([{select_val,_R,Fail,{list,Vls}}=I|Is], Acc, St) -> - skip_unreachable(Is, [I|Acc], label_used([Fail|Vls], St)); -opt([{select_tuple_arity,_R,Fail,{list,Vls}}=I|Is], Acc, St) -> +opt([{select,_,_R,Fail,Vls}=I|Is], Acc, St) -> skip_unreachable(Is, [I|Acc], label_used([Fail|Vls], St)); opt([{label,L}=I|Is], Acc, #st{entry=L}=St) -> %% NEVER move the entry label. @@ -412,14 +409,8 @@ is_label_used(L, St) -> is_unreachable_after({func_info,_M,_F,_A}) -> true; is_unreachable_after(return) -> true; -is_unreachable_after({call_ext_last,_Ar,_ExtFunc,_D}) -> true; -is_unreachable_after({call_ext_only,_Ar,_ExtFunc}) -> true; -is_unreachable_after({call_last,_Ar,_Lbl,_D}) -> true; -is_unreachable_after({call_only,_Ar,_Lbl}) -> true; -is_unreachable_after({apply_last,_Ar,_N}) -> true; is_unreachable_after({jump,_Lbl}) -> true; -is_unreachable_after({select_val,_R,_Lbl,_Cases}) -> true; -is_unreachable_after({select_tuple_arity,_R,_Lbl,_Cases}) -> true; +is_unreachable_after({select,_What,_R,_Lbl,_Cases}) -> true; is_unreachable_after({loop_rec_end,_}) -> true; is_unreachable_after({wait,_}) -> true; is_unreachable_after(I) -> is_exit_instruction(I). @@ -430,10 +421,6 @@ is_unreachable_after(I) -> is_exit_instruction(I). is_exit_instruction({call_ext,_,{extfunc,M,F,A}}) -> erl_bifs:is_exit_bif(M, F, A); -is_exit_instruction({call_ext_last,_,{extfunc,M,F,A},_}) -> - erl_bifs:is_exit_bif(M, F, A); -is_exit_instruction({call_ext_only,_,{extfunc,M,F,A}}) -> - erl_bifs:is_exit_bif(M, F, A); is_exit_instruction(if_end) -> true; is_exit_instruction({case_end,_}) -> true; is_exit_instruction({try_case_end,_}) -> true; @@ -516,9 +503,7 @@ ulbl({test,_,Fail,_}, Used) -> mark_used(Fail, Used); ulbl({test,_,Fail,_,_,_}, Used) -> mark_used(Fail, Used); -ulbl({select_val,_,Fail,{list,Vls}}, Used) -> - mark_used_list(Vls, mark_used(Fail, Used)); -ulbl({select_tuple_arity,_,Fail,{list,Vls}}, Used) -> +ulbl({select,_,_,Fail,Vls}, Used) -> mark_used_list(Vls, mark_used(Fail, Used)); ulbl({'try',_,Lbl}, Used) -> mark_used(Lbl, Used); @@ -538,29 +523,9 @@ ulbl({bif,_Name,Lbl,_As,_R}, Used) -> mark_used(Lbl, Used); ulbl({gc_bif,_Name,Lbl,_Live,_As,_R}, Used) -> mark_used(Lbl, Used); -ulbl({bs_init2,Lbl,_,_,_,_,_}, Used) -> - mark_used(Lbl, Used); -ulbl({bs_init_bits,Lbl,_,_,_,_,_}, Used) -> - mark_used(Lbl, Used); -ulbl({bs_put_integer,Lbl,_Bits,_Unit,_Fl,_Val}, Used) -> - mark_used(Lbl, Used); -ulbl({bs_put_float,Lbl,_Bits,_Unit,_Fl,_Val}, Used) -> - mark_used(Lbl, Used); -ulbl({bs_put_binary,Lbl,_Bits,_Unit,_Fl,_Val}, Used) -> - mark_used(Lbl, Used); -ulbl({bs_put_utf8,Lbl,_Fl,_Val}, Used) -> - mark_used(Lbl, Used); -ulbl({bs_put_utf16,Lbl,_Fl,_Val}, Used) -> - mark_used(Lbl, Used); -ulbl({bs_put_utf32,Lbl,_Fl,_Val}, Used) -> - mark_used(Lbl, Used); -ulbl({bs_add,Lbl,_,_}, Used) -> - mark_used(Lbl, Used); -ulbl({bs_append,Lbl,_,_,_,_,_,_,_}, Used) -> - mark_used(Lbl, Used); -ulbl({bs_utf8_size,Lbl,_,_}, Used) -> +ulbl({bs_init,Lbl,_,_,_,_}, Used) -> mark_used(Lbl, Used); -ulbl({bs_utf16_size,Lbl,_,_}, Used) -> +ulbl({bs_put,Lbl,_,_}, Used) -> mark_used(Lbl, Used); ulbl(_, Used) -> Used. diff --git a/lib/compiler/src/beam_peep.erl b/lib/compiler/src/beam_peep.erl index f39fc50b95..97a8c7ba70 100644 --- a/lib/compiler/src/beam_peep.erl +++ b/lib/compiler/src/beam_peep.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2008-2010. All Rights Reserved. +%% Copyright Ericsson AB 2008-2013. 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 @@ -120,13 +120,13 @@ peep([{test,Op,_,Ops}=I|Is], SeenTests0, Acc) -> peep(Is, SeenTests, [I|Acc]) end end; -peep([{select_val,Src,Fail, - {list,[{atom,false},{f,L},{atom,true},{f,L}]}}| +peep([{select,select_val,Src,Fail, + [{atom,false},{f,L},{atom,true},{f,L}]}| [{label,L}|_]=Is], SeenTests, Acc) -> I = {test,is_boolean,Fail,[Src]}, peep([I|Is], SeenTests, Acc); -peep([{select_val,Src,Fail, - {list,[{atom,true},{f,L},{atom,false},{f,L}]}}| +peep([{select,select_val,Src,Fail, + [{atom,true},{f,L},{atom,false},{f,L}]}| [{label,L}|_]=Is], SeenTests, Acc) -> I = {test,is_boolean,Fail,[Src]}, peep([I|Is], SeenTests, Acc); diff --git a/lib/compiler/src/beam_receive.erl b/lib/compiler/src/beam_receive.erl index bd1f44f66b..3dd5ed182e 100644 --- a/lib/compiler/src/beam_receive.erl +++ b/lib/compiler/src/beam_receive.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2010-2011. All Rights Reserved. +%% Copyright Ericsson AB 2010-2013. 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 @@ -84,13 +84,29 @@ function({function,Name,Arity,Entry,Is}) -> erlang:raise(Class, Error, Stack) end. +opt([{call_ext,A,{extfunc,erlang,spawn_monitor,A}}=I0|Is0], D, Acc) + when A =:= 1; A =:= 3 -> + case ref_in_tuple(Is0) of + no -> + opt(Is0, D, [I0|Acc]); + {yes,Regs,Is1,MatchReversed} -> + %% The call creates a brand new reference. Now + %% search for a receive statement in the same + %% function that will match against the reference. + case opt_recv(Is1, Regs, D) of + no -> + opt(Is0, D, [I0|Acc]); + {yes,Is,Lbl} -> + opt(Is, D, MatchReversed++[I0,{recv_mark,{f,Lbl}}|Acc]) + end + end; opt([{call_ext,Arity,{extfunc,erlang,Name,Arity}}=I|Is0], D, Acc) -> case creates_new_ref(Name, Arity) of true -> %% The call creates a brand new reference. Now %% search for a receive statement in the same %% function that will match against the reference. - case opt_recv(Is0, D) of + case opt_recv(Is0, regs_init_x0(), D) of no -> opt(Is0, D, [I|Acc]); {yes,Is,Lbl} -> @@ -104,19 +120,34 @@ opt([I|Is], D, Acc) -> opt([], _, Acc) -> reverse(Acc). +ref_in_tuple([{test,is_tuple,_,[{x,0}]}=I1, + {test,test_arity,_,[{x,0},2]}=I2, + {block,[{set,[_],[{x,0}],{get_tuple_element,0}}, + {set,[Dst],[{x,0}],{get_tuple_element,1}}|Bl]}=I3|Is]) -> + ref_in_tuple_1(Bl, Dst, Is, [I3,I2,I1]); +ref_in_tuple([{test,is_tuple,_,[{x,0}]}=I1, + {test,test_arity,_,[{x,0},2]}=I2, + {block,[{set,[Dst],[{x,0}],{get_tuple_element,1}}|Bl]}=I3|Is]) -> + ref_in_tuple_1(Bl, Dst, Is, [I3,I2,I1]); +ref_in_tuple(_) -> no. + +ref_in_tuple_1(Bl, Dst, Is, MatchReversed) -> + Regs0 = regs_init_singleton(Dst), + Regs = opt_update_regs_bl(Bl, Regs0), + {yes,Regs,Is,MatchReversed}. + %% creates_new_ref(Name, Arity) -> true|false. %% Return 'true' if the BIF Name/Arity will create a new reference. creates_new_ref(monitor, 2) -> true; creates_new_ref(make_ref, 0) -> true; creates_new_ref(_, _) -> false. -%% opt_recv([Instruction], LabelIndex) -> no|{yes,[Instruction]} +%% opt_recv([Instruction], Regs, LabelIndex) -> no|{yes,[Instruction]} %% Search for a receive statement that will only retrieve messages %% that contain the newly created reference (which is currently in {x,0}). -opt_recv(Is, D) -> - R = regs_init_x0(), +opt_recv(Is, Regs, D) -> L = gb_sets:empty(), - opt_recv(Is, D, R, L, []). + opt_recv(Is, D, Regs, L, []). opt_recv([{label,L}=Lbl,{loop_rec,{f,Fail},_}=Loop|Is], D, R0, _, Acc) -> R = regs_kill_not_live(0, R0), @@ -157,8 +188,6 @@ opt_update_regs({call_fun,_}, R, L) -> {regs_kill_not_live(0, R),L}; opt_update_regs({kill,Y}, R, L) -> {regs_kill([Y], R),L}; -opt_update_regs(send, R, L) -> - {regs_kill_not_live(0, R),L}; opt_update_regs({'catch',_,{f,Lbl}}, R, L) -> {R,gb_sets:add(Lbl, L)}; opt_update_regs({catch_end,_}, R, L) -> @@ -220,7 +249,7 @@ opt_ref_used(Is, RefReg, Fail, D) -> Done = gb_sets:singleton(Fail), Regs = regs_init_x0(), try - opt_ref_used_1(Is, RefReg, D, Done, Regs), + _ = opt_ref_used_1(Is, RefReg, D, Done, Regs), true catch throw:not_used -> @@ -253,10 +282,7 @@ opt_ref_used_1([{test,is_ne_exact,{f,Fail},Args}|Is], RefReg, D, Done0, Regs) -> opt_ref_used_1([{test,_,{f,Fail},_}|Is], RefReg, D, Done0, Regs) -> Done = opt_ref_used_at(Fail, RefReg, D, Done0, Regs), opt_ref_used_1(Is, RefReg, D, Done, Regs); -opt_ref_used_1([{select_tuple_arity,_,{f,Fail},{list,List}}|_], RefReg, D, Done, Regs) -> - Lbls = [F || {f,F} <- List] ++ [Fail], - opt_ref_used_in_all(Lbls, RefReg, D, Done, Regs); -opt_ref_used_1([{select_val,_,{f,Fail},{list,List}}|_], RefReg, D, Done, Regs) -> +opt_ref_used_1([{select,_,_,{f,Fail},List}|_], RefReg, D, Done, Regs) -> Lbls = [F || {f,F} <- List] ++ [Fail], opt_ref_used_in_all(Lbls, RefReg, D, Done, Regs); opt_ref_used_1([{label,Lbl}|Is], RefReg, D, Done, Regs) -> @@ -323,6 +349,12 @@ opt_ref_used_bl([], Regs) -> Regs. regs_init() -> {0,0}. +%% regs_init_singleton(Register) -> RegisterSet +%% Return a set that only contains one register. + +regs_init_singleton(Reg) -> + regs_add(Reg, regs_init()). + %% regs_init_x0() -> RegisterSet %% Return a set that only contains the {x,0} register. diff --git a/lib/compiler/src/beam_trim.erl b/lib/compiler/src/beam_trim.erl index 5f4fa3b1f8..fad9c42584 100644 --- a/lib/compiler/src/beam_trim.erl +++ b/lib/compiler/src/beam_trim.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2007-2011. All Rights Reserved. +%% Copyright Ericsson AB 2007-2013. 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 @@ -172,38 +172,16 @@ remap([{bif,Name,Fail,Ss,D}|Is], Map, Acc) -> remap([{gc_bif,Name,Fail,Live,Ss,D}|Is], Map, Acc) -> I = {gc_bif,Name,Fail,Live,[Map(S) || S <- Ss],Map(D)}, remap(Is, Map, [I|Acc]); -remap([{bs_add,Fail,[SrcA,SrcB,U],D}|Is], Map, Acc) -> - I = {bs_add,Fail,[Map(SrcA),Map(SrcB),U],Map(D)}, +remap([{bs_init,Fail,Info,Live,Ss0,Dst0}|Is], Map, Acc) -> + Ss = [Map(Src) || Src <- Ss0], + Dst = Map(Dst0), + I = {bs_init,Fail,Info,Live,Ss,Dst}, remap(Is, Map, [I|Acc]); -remap([{bs_append=Op,Fail,Bits,Heap,Live,Unit,Bin,Flags,D}|Is], Map, Acc) -> - I = {Op,Fail,Map(Bits),Heap,Live,Unit,Map(Bin),Flags,Map(D)}, - remap(Is, Map, [I|Acc]); -remap([{bs_private_append=Op,Fail,Bits,Unit,Bin,Flags,D}|Is], Map, Acc) -> - I = {Op,Fail,Map(Bits),Unit,Map(Bin),Flags,Map(D)}, - remap(Is, Map, [I|Acc]); -remap([bs_init_writable=I|Is], Map, Acc) -> - remap(Is, Map, [I|Acc]); -remap([{bs_init2,Fail,Src,Live,U,Flags,D}|Is], Map, Acc) -> - I = {bs_init2,Fail,Map(Src),Live,U,Flags,Map(D)}, - remap(Is, Map, [I|Acc]); -remap([{bs_init_bits,Fail,Src,Live,U,Flags,D}|Is], Map, Acc) -> - I = {bs_init_bits,Fail,Map(Src),Live,U,Flags,Map(D)}, - remap(Is, Map, [I|Acc]); -remap([{bs_put_binary=Op,Fail,Src,U,Flags,D}|Is], Map, Acc) -> - I = {Op,Fail,Map(Src),U,Flags,Map(D)}, - remap(Is, Map, [I|Acc]); -remap([{bs_put_integer=Op,Fail,Src,U,Flags,D}|Is], Map, Acc) -> - I = {Op,Fail,Map(Src),U,Flags,Map(D)}, - remap(Is, Map, [I|Acc]); -remap([{bs_put_float=Op,Fail,Src,U,Flags,D}|Is], Map, Acc) -> - I = {Op,Fail,Map(Src),U,Flags,Map(D)}, - remap(Is, Map, [I|Acc]); -remap([{bs_put_string,_,_}=I|Is], Map, Acc) -> +remap([{bs_put=Op,Fail,Info,Ss}|Is], Map, Acc) -> + I = {Op,Fail,Info,[Map(S) || S <- Ss]}, remap(Is, Map, [I|Acc]); remap([{kill,Y}|T], Map, Acc) -> remap(T, Map, [{kill,Map(Y)}|Acc]); -remap([send=I|T], Map, Acc) -> - remap(T, Map, [I|Acc]); remap([{make_fun2,_,_,_,_}=I|T], Map, Acc) -> remap(T, Map, [I|Acc]); remap([{deallocate,N}|Is], Map, Acc) -> @@ -217,12 +195,6 @@ remap([{test,Name,Fail,Live,Ss,Dst}|Is], Map, Acc) -> remap(Is, Map, [I|Acc]); remap([return|_]=Is, _, Acc) -> reverse(Acc, Is); -remap([{call_last,Ar,Name,N}|Is], Map, Acc) -> - I = {call_last,Ar,Name,Map({frame_size,N})}, - reverse(Acc, [I|Is]); -remap([{call_ext_last,Ar,Name,N}|Is], Map, Acc) -> - I = {call_ext_last,Ar,Name,Map({frame_size,N})}, - reverse(Acc, [I|Is]); remap([{line,_}=I|Is], Map, Acc) -> remap(Is, Map, [I|Acc]). @@ -280,8 +252,8 @@ frame_size([{call_fun,_}|Is], Safe) -> frame_size(Is, Safe); frame_size([{call,_,_}|Is], Safe) -> frame_size(Is, Safe); -frame_size([{call_ext,A,{extfunc,M,F,A}}|Is], Safe) -> - case erl_bifs:is_exit_bif(M, F, A) of +frame_size([{call_ext,_,_}=I|Is], Safe) -> + case beam_jump:is_exit_instruction(I) of true -> throw(not_possible); false -> frame_size(Is, Safe) end; @@ -295,35 +267,15 @@ frame_size([{test,_,{f,L},_}|Is], Safe) -> frame_size_branch(L, Is, Safe); frame_size([{test,_,{f,L},_,_,_}|Is], Safe) -> frame_size_branch(L, Is, Safe); -frame_size([{bs_add,{f,L},_,_}|Is], Safe) -> +frame_size([{bs_init,{f,L},_,_,_,_}|Is], Safe) -> frame_size_branch(L, Is, Safe); -frame_size([{bs_append,{f,L},_,_,_,_,_,_,_}|Is], Safe) -> +frame_size([{bs_put,{f,L},_,_}|Is], Safe) -> frame_size_branch(L, Is, Safe); -frame_size([{bs_private_append,{f,L},_,_,_,_,_}|Is], Safe) -> - frame_size_branch(L, Is, Safe); -frame_size([bs_init_writable|Is], Safe) -> - frame_size(Is, Safe); -frame_size([{bs_init2,{f,L},_,_,_,_,_}|Is], Safe) -> - frame_size_branch(L, Is, Safe); -frame_size([{bs_init_bits,{f,L},_,_,_,_,_}|Is], Safe) -> - frame_size_branch(L, Is, Safe); -frame_size([{bs_put_binary,{f,L},_,_,_,_}|Is], Safe) -> - frame_size_branch(L, Is, Safe); -frame_size([{bs_put_integer,{f,L},_,_,_,_}|Is], Safe) -> - frame_size_branch(L, Is, Safe); -frame_size([{bs_put_float,{f,L},_,_,_,_}|Is], Safe) -> - frame_size_branch(L, Is, Safe); -frame_size([{bs_put_string,_,_}|Is], Safe) -> - frame_size(Is, Safe); frame_size([{kill,_}|Is], Safe) -> frame_size(Is, Safe); -frame_size([send|Is], Safe) -> - frame_size(Is, Safe); frame_size([{make_fun2,_,_,_,_}|Is], Safe) -> frame_size(Is, Safe); frame_size([{deallocate,N}|_], _) -> N; -frame_size([{call_last,_,_,N}|_], _) -> N; -frame_size([{call_ext_last,_,_,N}|_], _) -> N; frame_size([{line,_}|Is], Safe) -> frame_size(Is, Safe); frame_size([_|_], _) -> throw(not_possible). diff --git a/lib/compiler/src/beam_type.erl b/lib/compiler/src/beam_type.erl index 7392f99fb6..372923a5cf 100644 --- a/lib/compiler/src/beam_type.erl +++ b/lib/compiler/src/beam_type.erl @@ -142,9 +142,11 @@ simplify_float(Is0, Ts0) -> throw:not_possible -> not_possible end. -simplify_float_1([{set,[D0],[A],{alloc,_,{gc_bif,'-',{f,0}}}}=I|Is]=Is0, Ts0, Rs0, Acc0) -> - case tdb_find(A, Ts0) of +simplify_float_1([{set,[D0],[A0],{alloc,_,{gc_bif,'-',{f,0}}}}=I|Is]=Is0, + Ts0, Rs0, Acc0) -> + case tdb_find(A0, Ts0) of float -> + A = coerce_to_float(A0), {Rs1,Acc1} = load_reg(A, Ts0, Rs0, Acc0), {D,Rs} = find_dest(D0, Rs1), Areg = fetch_reg(A, Rs), @@ -156,13 +158,16 @@ simplify_float_1([{set,[D0],[A],{alloc,_,{gc_bif,'-',{f,0}}}}=I|Is]=Is0, Ts0, Rs {Rs,Acc} = flush(Rs0, Is0, Acc0), simplify_float_1(Is, Ts, Rs, [I|checkerror(Acc)]) end; -simplify_float_1([{set,[D0],[A,B],{alloc,_,{gc_bif,Op0,{f,0}}}}=I|Is]=Is0, Ts0, Rs0, Acc0) -> - case float_op(Op0, A, B, Ts0) of +simplify_float_1([{set,[D0],[A0,B0],{alloc,_,{gc_bif,Op0,{f,0}}}}=I|Is]=Is0, + Ts0, Rs0, Acc0) -> + case float_op(Op0, A0, B0, Ts0) of no -> Ts = update(I, Ts0), {Rs,Acc} = flush(Rs0, Is0, Acc0), simplify_float_1(Is, Ts, Rs, [I|checkerror(Acc)]); {yes,Op} -> + A = coerce_to_float(A0), + B = coerce_to_float(B0), {Rs1,Acc1} = load_reg(A, Ts0, Rs0, Acc0), {Rs2,Acc2} = load_reg(B, Ts0, Rs1, Acc1), {D,Rs} = find_dest(D0, Rs2), @@ -187,6 +192,16 @@ simplify_float_1([], Ts, Rs, Acc0) -> Is = opt_fmoves(Is0, []), {Is,Ts}. +coerce_to_float({integer,I}=Int) -> + try float(I) of + F -> + {float,F} + catch _:_ -> + %% Let the overflow happen at run-time. + Int + end; +coerce_to_float(Other) -> Other. + opt_fmoves([{set,[{x,_}=R],[{fr,_}]=Src,fmove}=I1, {set,[_]=Dst,[{x,_}=R],move}=I2|Is], Acc) -> case beam_utils:is_killed_block(R, Is) of diff --git a/lib/compiler/src/beam_utils.erl b/lib/compiler/src/beam_utils.erl index 194f089ba1..8af0447f63 100644 --- a/lib/compiler/src/beam_utils.erl +++ b/lib/compiler/src/beam_utils.erl @@ -87,7 +87,7 @@ is_killed_at(R, Lbl, D) when is_integer(Lbl) -> %% across branches. is_not_used(R, Is, D) -> - St = #live{bl=fun check_used_block/2,lbl=D,res=gb_trees:empty()}, + St = #live{bl=check_used_block_fun(D),lbl=D,res=gb_trees:empty()}, case check_liveness(R, Is, St) of {killed,_} -> true; {used,_} -> false; @@ -102,7 +102,7 @@ is_not_used(R, Is, D) -> %% across branches. is_not_used_at(R, Lbl, D) -> - St = #live{bl=fun check_used_block/2,lbl=D,res=gb_trees:empty()}, + St = #live{bl=check_used_block_fun(D),lbl=D,res=gb_trees:empty()}, case check_liveness_at(R, Lbl, St) of {killed,_} -> true; {used,_} -> false; @@ -263,26 +263,14 @@ check_liveness(R, [{test,_,{f,Fail},As}|Is], St0) -> {_,_}=Other -> Other end end; -check_liveness(R, [{test,_,{f,Fail},Live,Ss,_}|Is], St0) -> - case R of - {x,X} -> - case X < Live orelse member(R, Ss) of - true -> {used,St0}; - false -> check_liveness_at(R, Fail, St0) - end; - {y,_} -> - case check_liveness_at(R, Fail, St0) of - {killed,St} -> check_liveness(R, Is, St); - {_,_}=Other -> Other - end - end; -check_liveness(R, [{select_val,R,_,_}|_], St) -> - {used,St}; -check_liveness(R, [{select_val,_,Fail,{list,Branches}}|_], St) -> - check_liveness_everywhere(R, [Fail|Branches], St); -check_liveness(R, [{select_tuple_arity,R,_,_}|_], St) -> +check_liveness(R, [{test,Op,Fail,Live,Ss,Dst}|Is], St) -> + %% Check this instruction as a block to get a less conservative + %% result if the caller is is_not_used/3. + Block = [{set,[Dst],Ss,{alloc,Live,{bif,Op,Fail}}}], + check_liveness(R, [{block,Block}|Is], St); +check_liveness(R, [{select,_,R,_,_}|_], St) -> {used,St}; -check_liveness(R, [{select_tuple_arity,_,Fail,{list,Branches}}|_], St) -> +check_liveness(R, [{select,_,_,Fail,Branches}|_], St) -> check_liveness_everywhere(R, [Fail|Branches], St); check_liveness(R, [{jump,{f,F}}|_], St) -> check_liveness_at(R, F, St); @@ -301,37 +289,33 @@ check_liveness(R, [{kill,R}|_], St) -> {killed,St}; check_liveness(R, [{kill,_}|Is], St) -> check_liveness(R, Is, St); -check_liveness(R, [bs_init_writable|Is], St) -> - if - R =:= {x,0} -> {used,St}; - true -> check_liveness(R, Is, St) - end; -check_liveness(R, [{bs_private_append,_,Bits,_,Bin,_,Dst}|Is], St) -> - case R of - Bits -> {used,St}; - Bin -> {used,St}; - Dst -> {killed,St}; - _ -> check_liveness(R, Is, St) +check_liveness(R, [{bs_init,_,_,none,Ss,Dst}|Is], St) -> + case member(R, Ss) of + true -> + {used,St}; + false -> + if + R =:= Dst -> {killed,St}; + true -> check_liveness(R, Is, St) + end end; -check_liveness(R, [{bs_append,_,Bits,_,_,_,Bin,_,Dst}|Is], St) -> +check_liveness(R, [{bs_init,_,_,Live,Ss,Dst}|Is], St) -> case R of - Bits -> {used,St}; - Bin -> {used,St}; - Dst -> {killed,St}; - _ -> check_liveness(R, Is, St) - end; -check_liveness(R, [{bs_init2,_,_,_,_,_,Dst}|Is], St) -> - if - R =:= Dst -> {killed,St}; - true -> check_liveness(R, Is, St) - end; -check_liveness(R, [{bs_init_bits,_,_,_,_,_,Dst}|Is], St) -> - if - R =:= Dst -> {killed,St}; - true -> check_liveness(R, Is, St) + {x,X} -> + case X < Live orelse member(R, Ss) of + true -> {used,St}; + false -> {killed,St} + end; + {y,_} -> + case member(R, Ss) of + true -> {used,St}; + false -> + if + R =:= Dst -> {killed,St}; + true -> check_liveness(R, Is, St) + end + end end; -check_liveness(R, [{bs_put_string,_,_}|Is], St) -> - check_liveness(R, Is, St); check_liveness(R, [{deallocate,_}|Is], St) -> case R of {y,_} -> {killed,St}; @@ -339,29 +323,20 @@ check_liveness(R, [{deallocate,_}|Is], St) -> end; check_liveness(R, [return|_], St) -> check_liveness_live_ret(R, 1, St); -check_liveness(R, [{call_last,Live,_,_}|_], St) -> - check_liveness_live_ret(R, Live, St); -check_liveness(R, [{call_only,Live,_}|_], St) -> - check_liveness_live_ret(R, Live, St); -check_liveness(R, [{call_ext_last,Live,_,_}|_], St) -> - check_liveness_live_ret(R, Live, St); -check_liveness(R, [{call_ext_only,Live,_}|_], St) -> - check_liveness_live_ret(R, Live, St); check_liveness(R, [{call,Live,_}|Is], St) -> case R of {x,X} when X < Live -> {used,St}; {x,_} -> {killed,St}; {y,_} -> check_liveness(R, Is, St) end; -check_liveness(R, [{call_ext,Live,Func}|Is], St) -> +check_liveness(R, [{call_ext,Live,_}=I|Is], St) -> case R of {x,X} when X < Live -> {used,St}; {x,_} -> {killed,St}; {y,_} -> - {extfunc,Mod,Name,Arity} = Func, - case erl_bifs:is_exit_bif(Mod, Name, Arity) of + case beam_jump:is_exit_instruction(I) of false -> check_liveness(R, Is, St); true -> @@ -387,14 +362,6 @@ check_liveness(R, [{apply,Args}|Is], St) -> {x,_} -> {killed,St}; {y,_} -> check_liveness(R, Is, St) end; -check_liveness(R, [{apply_last,Args,_}|_], St) -> - check_liveness_live_ret(R, Args+2, St); -check_liveness(R, [send|Is], St) -> - case R of - {x,X} when X < 2 -> {used,St}; - {x,_} -> {killed,St}; - {y,_} -> check_liveness(R, Is, St) - end; check_liveness({x,R}, [{'%live',Live}|Is], St) -> if R < Live -> check_liveness(R, Is, St); @@ -429,25 +396,9 @@ check_liveness(R, [{gc_bif,Op,{f,Fail},Live,Ss,D}|Is], St0) -> Other end end; -check_liveness(R, [{bs_add,{f,0},Ss,D}|Is], St) -> +check_liveness(R, [{bs_put,{f,0},_,Ss}|Is], St) -> case member(R, Ss) of true -> {used,St}; - false when R =:= D -> {killed,St}; - false -> check_liveness(R, Is, St) - end; -check_liveness(R, [{bs_put_binary,{f,0},Sz,_,_,Src}|Is], St) -> - case member(R, [Sz,Src]) of - true -> {used,St}; - false -> check_liveness(R, Is, St) - end; -check_liveness(R, [{bs_put_integer,{f,0},Sz,_,_,Src}|Is], St) -> - case member(R, [Sz,Src]) of - true -> {used,St}; - false -> check_liveness(R, Is, St) - end; -check_liveness(R, [{bs_put_float,{f,0},Sz,_,_,Src}|Is], St) -> - case member(R, [Sz,Src]) of - true -> {used,St}; false -> check_liveness(R, Is, St) end; check_liveness(R, [{bs_restore2,S,_}|Is], St) -> @@ -472,6 +423,16 @@ check_liveness(R, [{make_fun2,_,_,_,NumFree}|Is], St) -> {x,_} -> {killed,St}; _ -> check_liveness(R, Is, St) end; +check_liveness({x,_}=R, [{'catch',_,_}|Is], St) -> + %% All x registers will be killed if an exception occurs. + %% Therefore we only need to check the liveness for the + %% instructions following the catch instruction. + check_liveness(R, Is, St); +check_liveness({x,_}=R, [{'try',_,_}|Is], St) -> + %% All x registers will be killed if an exception occurs. + %% Therefore we only need to check the liveness for the + %% instructions inside the 'try' block. + check_liveness(R, Is, St); check_liveness(R, [{try_end,Y}|Is], St) -> case R of Y -> @@ -602,26 +563,50 @@ check_killed_block(_, []) -> transparent. %% %% (Unknown instructions will cause an exception.) -check_used_block({x,X}=R, [{set,_,_,{alloc,Live,_}}|Is]) -> +check_used_block_fun(D) -> + fun(R, Is) -> check_used_block(R, Is, D) end. + +check_used_block({x,X}=R, [{set,Ds,Ss,{alloc,Live,Op}}|Is], D) -> if X >= Live -> killed; - true -> check_used_block(R, Is) + true -> + case member(R, Ss) orelse + is_reg_used_at(R, Op, D) of + true -> used; + false -> + case member(R, Ds) of + true -> killed; + false -> check_used_block(R, Is, D) + end + end end; -check_used_block(R, [{set,Ds,Ss,_Op}|Is]) -> - case member(R, Ss) of +check_used_block(R, [{set,Ds,Ss,Op}|Is], D) -> + case member(R, Ss) orelse + is_reg_used_at(R, Op, D) of true -> used; false -> case member(R, Ds) of true -> killed; - false -> check_used_block(R, Is) + false -> check_used_block(R, Is, D) end end; -check_used_block(R, [{'%live',Live}|Is]) -> +check_used_block(R, [{'%live',Live}|Is], D) -> case R of {x,X} when X >= Live -> killed; - _ -> check_used_block(R, Is) + _ -> check_used_block(R, Is, D) end; -check_used_block(_, []) -> transparent. +check_used_block(_, [], _) -> transparent. + +is_reg_used_at(R, {gc_bif,_,{f,Lbl}}, D) -> + is_reg_used_at_1(R, Lbl, D); +is_reg_used_at(R, {bif,_,{f,Lbl}}, D) -> + is_reg_used_at_1(R, Lbl, D); +is_reg_used_at(_, _, _) -> false. + +is_reg_used_at_1(_, 0, _) -> + false; +is_reg_used_at_1(R, Lbl, D) -> + not is_not_used_at(R, Lbl, D). index_labels_1([{label,Lbl}|Is0], Acc) -> Is = lists:dropwhile(fun({label,_}) -> true; @@ -654,49 +639,21 @@ combine_alloc_lists_1([]) -> []. live_opt([{bs_context_to_binary,Src}=I|Is], Regs0, D, Acc) -> Regs = x_live([Src], Regs0), live_opt(Is, Regs, D, [I|Acc]); -live_opt([{bs_add,Fail,[Src1,Src2,_],Dst}=I|Is], Regs0, D, Acc) -> - Regs1 = x_live([Src1,Src2], x_dead([Dst], Regs0)), - Regs = live_join_label(Fail, D, Regs1), - live_opt(Is, Regs, D, [I|Acc]); -live_opt([{bs_init2,Fail,_,_,Live,_,_}=I|Is], _, D, Acc) -> - Regs1 = live_call(Live), - Regs = live_join_label(Fail, D, Regs1), - live_opt(Is, Regs, D, [I|Acc]); -live_opt([{bs_init_bits,Fail,Src1,_,Live,_,Src2}=I|Is], _, D, Acc) -> - Regs1 = live_call(Live), - Regs2 = x_live([Src1,Src2], Regs1), - Regs = live_join_label(Fail, D, Regs2), - live_opt(Is, Regs, D, [I|Acc]); -live_opt([{bs_append,Fail,Src1,_,Live,_,Src2,_,Dst}=I|Is], _Regs0, D, Acc) -> - Regs1 = x_dead([Dst], x_live([Src1,Src2], live_call(Live))), - Regs = live_join_label(Fail, D, Regs1), - live_opt(Is, Regs, D, [I|Acc]); -live_opt([{bs_private_append,Fail,Src1,_,Src2,_,Dst}=I|Is], Regs0, D, Acc) -> - Regs1 = x_live([Src1,Src2], x_dead([Dst], Regs0)), - Regs = live_join_label(Fail, D, Regs1), - live_opt(Is, Regs, D, [I|Acc]); -live_opt([{bs_put_binary,Fail,Src1,_,_,Src2}=I|Is], Regs0, D, Acc) -> - Regs1 = x_live([Src1,Src2], Regs0), - Regs = live_join_label(Fail, D, Regs1), - live_opt(Is, Regs, D, [I|Acc]); -live_opt([{bs_put_float,Fail,Src1,_,_,Src2}=I|Is], Regs0, D, Acc) -> - Regs1 = x_live([Src1,Src2], Regs0), +live_opt([{bs_init,Fail,_,none,Ss,Dst}=I|Is], Regs0, D, Acc) -> + Regs1 = x_live(Ss, x_dead([Dst], Regs0)), Regs = live_join_label(Fail, D, Regs1), live_opt(Is, Regs, D, [I|Acc]); -live_opt([{bs_put_integer,Fail,Src1,_,_,Src2}=I|Is], Regs0, D, Acc) -> - Regs1 = x_live([Src1,Src2], Regs0), - Regs = live_join_label(Fail, D, Regs1), - live_opt(Is, Regs, D, [I|Acc]); -live_opt([{bs_put_utf8,Fail,_,Src}=I|Is], Regs0, D, Acc) -> - Regs1 = x_live([Src], Regs0), - Regs = live_join_label(Fail, D, Regs1), - live_opt(Is, Regs, D, [I|Acc]); -live_opt([{bs_put_utf16,Fail,_,Src}=I|Is], Regs0, D, Acc) -> - Regs1 = x_live([Src], Regs0), - Regs = live_join_label(Fail, D, Regs1), +live_opt([{bs_init,Fail,Info,Live0,Ss,Dst}|Is], Regs0, D, Acc) -> + Regs1 = x_dead([Dst], Regs0), + Live = live_regs(Regs1), + true = Live =< Live0, %Assertion. + Regs2 = live_call(Live), + Regs3 = x_live(Ss, Regs2), + Regs = live_join_label(Fail, D, Regs3), + I = {bs_init,Fail,Info,Live,Ss,Dst}, live_opt(Is, Regs, D, [I|Acc]); -live_opt([{bs_put_utf32,Fail,_,Src}=I|Is], Regs0, D, Acc) -> - Regs1 = x_live([Src], Regs0), +live_opt([{bs_put,Fail,_,Ss}=I|Is], Regs0, D, Acc) -> + Regs1 = x_live(Ss, Regs0), Regs = live_join_label(Fail, D, Regs1), live_opt(Is, Regs, D, [I|Acc]); live_opt([{bs_restore2,Src,_}=I|Is], Regs0, D, Acc) -> @@ -705,14 +662,6 @@ live_opt([{bs_restore2,Src,_}=I|Is], Regs0, D, Acc) -> live_opt([{bs_save2,Src,_}=I|Is], Regs0, D, Acc) -> Regs = x_live([Src], Regs0), live_opt(Is, Regs, D, [I|Acc]); -live_opt([{bs_utf8_size,Fail,Src,Dst}=I|Is], Regs0, D, Acc) -> - Regs1 = x_live([Src], x_dead([Dst], Regs0)), - Regs = live_join_label(Fail, D, Regs1), - live_opt(Is, Regs, D, [I|Acc]); -live_opt([{bs_utf16_size,Fail,Src,Dst}=I|Is], Regs0, D, Acc) -> - Regs1 = x_live([Src], x_dead([Dst], Regs0)), - Regs = live_join_label(Fail, D, Regs1), - live_opt(Is, Regs, D, [I|Acc]); live_opt([{test,bs_start_match2,Fail,Live,[Src,_],_}=I|Is], _, D, Acc) -> Regs0 = live_call(Live), Regs1 = x_live([Src], Regs0), @@ -747,30 +696,16 @@ live_opt([{try_case_end,Src}=I|Is], _, D, Acc) -> live_opt([if_end=I|Is], _, D, Acc) -> Regs = 0, live_opt(Is, Regs, D, [I|Acc]); -live_opt([bs_init_writable=I|Is], _, D, Acc) -> - live_opt(Is, live_call(1), D, [I|Acc]); live_opt([{call,Arity,_}=I|Is], _, D, Acc) -> live_opt(Is, live_call(Arity), D, [I|Acc]); live_opt([{call_ext,Arity,_}=I|Is], _, D, Acc) -> live_opt(Is, live_call(Arity), D, [I|Acc]); live_opt([{call_fun,Arity}=I|Is], _, D, Acc) -> live_opt(Is, live_call(Arity+1), D, [I|Acc]); -live_opt([{call_last,Arity,_,_}=I|Is], _, D, Acc) -> - live_opt(Is, live_call(Arity), D, [I|Acc]); -live_opt([{call_ext_last,Arity,_,_}=I|Is], _, D, Acc) -> - live_opt(Is, live_call(Arity), D, [I|Acc]); live_opt([{apply,Arity}=I|Is], _, D, Acc) -> live_opt(Is, live_call(Arity+2), D, [I|Acc]); -live_opt([{apply_last,Arity,_}=I|Is], _, D, Acc) -> - live_opt(Is, live_call(Arity+2), D, [I|Acc]); -live_opt([{call_only,Arity,_}=I|Is], _, D, Acc) -> - live_opt(Is, live_call(Arity), D, [I|Acc]); -live_opt([{call_ext_only,Arity,_}=I|Is], _, D, Acc) -> - live_opt(Is, live_call(Arity), D, [I|Acc]); live_opt([{make_fun2,_,_,_,Arity}=I|Is], _, D, Acc) -> live_opt(Is, live_call(Arity), D, [I|Acc]); -live_opt([send=I|Is], _, D, Acc) -> - live_opt(Is, live_call(2), D, [I|Acc]); live_opt([{test,_,Fail,Ss}=I|Is], Regs0, D, Acc) -> Regs1 = x_live(Ss, Regs0), Regs = live_join_label(Fail, D, Regs1), @@ -780,16 +715,14 @@ live_opt([{test,_,Fail,Live,Ss,_}=I|Is], _, D, Acc) -> Regs1 = x_live(Ss, Regs0), Regs = live_join_label(Fail, D, Regs1), live_opt(Is, Regs, D, [I|Acc]); -live_opt([{select_val,Src,Fail,{list,List}}=I|Is], Regs0, D, Acc) -> +live_opt([{select,_,Src,Fail,List}=I|Is], Regs0, D, Acc) -> Regs1 = x_live([Src], Regs0), Regs = live_join_labels([Fail|List], D, Regs1), live_opt(Is, Regs, D, [I|Acc]); -live_opt([{select_tuple_arity,Src,Fail,{list,List}}=I|Is], Regs0, D, Acc) -> - Regs1 = x_live([Src], Regs0), - Regs = live_join_labels([Fail|List], D, Regs1), - live_opt(Is, Regs, D, [I|Acc]); -live_opt([{'try',_,Fail}=I|Is], Regs0, D, Acc) -> - Regs = live_join_label(Fail, D, Regs0), +live_opt([{'try',_,_}=I|Is], Regs, D, Acc) -> + %% If an exeption happens, all x registers will be killed. + %% Therefore, we should only base liveness of the code inside + %% the try. live_opt(Is, Regs, D, [I|Acc]); live_opt([{try_case,_}=I|Is], _, D, Acc) -> live_opt(Is, live_call(1), D, [I|Acc]); @@ -799,8 +732,6 @@ live_opt([timeout=I|Is], _, D, Acc) -> live_opt(Is, 0, D, [I|Acc]); %% Transparent instructions - they neither use nor modify x registers. -live_opt([{bs_put_string,_,_}=I|Is], Regs, D, Acc) -> - live_opt(Is, Regs, D, [I|Acc]); live_opt([{deallocate,_}=I|Is], Regs, D, Acc) -> live_opt(Is, Regs, D, [I|Acc]); live_opt([{kill,_}=I|Is], Regs, D, Acc) -> @@ -827,13 +758,24 @@ live_opt([{allocate_heap,_,_,Live}=I|Is], _, D, Acc) -> live_opt([], _, _, Acc) -> Acc. -live_opt_block([{set,[],[],{alloc,Live,_}}=I|Is], _, D, Acc) -> - live_opt_block(Is, live_call(Live), D, [I|Acc]); -live_opt_block([{set,Ds,Ss,Op}=I|Is], Regs0, D, Acc) -> - Regs = case Op of - {alloc,Live,_} -> live_call(Live); - _ -> x_live(Ss, x_dead(Ds, Regs0)) - end, +live_opt_block([{set,Ds,Ss,Op}=I0|Is], Regs0, D, Acc) -> + Regs1 = x_live(Ss, x_dead(Ds, Regs0)), + {I,Regs} = case Op of + {alloc,Live0,Alloc} -> + %% The life-time analysis used by the code generator + %% is sometimes too conservative, so it may be + %% possible to lower the number of live registers + %% based on the exact liveness information. + %% The main benefit is that more optimizations that + %% depend on liveness information (such as the + %% beam_bool and beam_dead passes) may be applied. + Live = live_regs(Regs1), + true = Live =< Live0, %Assertion. + I1 = {set,Ds,Ss,{alloc,Live,Alloc}}, + {I1,live_call(Live)}; + _ -> + {I0,Regs1} + end, case Ds of [{x,X}] -> case (not is_live(X, Regs0)) andalso Op =:= move of diff --git a/lib/compiler/src/beam_validator.erl b/lib/compiler/src/beam_validator.erl index 29758b8fb4..eb72290306 100644 --- a/lib/compiler/src/beam_validator.erl +++ b/lib/compiler/src/beam_validator.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2004-2012. All Rights Reserved. +%% Copyright Ericsson AB 2004-2013. 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 @@ -62,7 +62,7 @@ files([F|Fs]) -> case file(F) of ok -> ok; {error,Es} -> - io:format("~p:~n~s~n", [F,format_error(Es)]) + io:format("~tp:~n~ts~n", [F,format_error(Es)]) end, files(Fs); files([]) -> ok. @@ -649,7 +649,8 @@ valfun_4(send, Vst) -> call(send, 2, Vst); valfun_4({set_tuple_element,Src,Tuple,I}, Vst) -> assert_term(Src, Vst), - assert_type({tuple_element,I+1}, Tuple, Vst); + assert_type({tuple_element,I+1}, Tuple, Vst), + Vst; %% Match instructions. valfun_4({select_val,Src,{f,Fail},{list,Choices}}, Vst) -> assert_term(Src, Vst), @@ -1044,7 +1045,7 @@ float_op(Src, Dst, Vst0) -> assert_fls(Fls, Vst) -> case get_fls(Vst) of - Fls -> Vst; + Fls -> ok; OtherFls -> error({bad_floating_point_state,OtherFls}) end. @@ -1120,7 +1121,7 @@ bsm_match_state(Slots) -> {match_context,0,Slots}. bsm_validate_context(Reg, Vst) -> - bsm_get_context(Reg, Vst), + _ = bsm_get_context(Reg, Vst), ok. bsm_get_context({x,X}=Reg, #vst{current=#st{x=Xs}}=_Vst) when is_integer(X) -> @@ -1133,7 +1134,7 @@ bsm_get_context(Reg, _) -> error({bad_source,Reg}). bsm_save(Reg, {atom,start}, Vst) -> %% Save point refering to where the match started. %% It is always valid. But don't forget to validate the context register. - bsm_get_context(Reg, Vst), + bsm_validate_context(Reg, Vst), Vst; bsm_save(Reg, SavePoint, Vst) -> case bsm_get_context(Reg, Vst) of @@ -1146,7 +1147,7 @@ bsm_save(Reg, SavePoint, Vst) -> bsm_restore(Reg, {atom,start}, Vst) -> %% (Mostly) automatic save point refering to where the match started. %% It is always valid. But don't forget to validate the context register. - bsm_get_context(Reg, Vst), + bsm_validate_context(Reg, Vst), Vst; bsm_restore(Reg, SavePoint, Vst) -> case bsm_get_context(Reg, Vst) of @@ -1312,8 +1313,7 @@ assert_term(Src, Vst) -> %% assert_type(WantedType, Term, Vst) -> - assert_type(WantedType, get_term_type(Term, Vst)), - Vst. + assert_type(WantedType, get_term_type(Term, Vst)). assert_type(Correct, Correct) -> ok; assert_type(float, {float,_}) -> ok; diff --git a/lib/compiler/src/beam_z.erl b/lib/compiler/src/beam_z.erl new file mode 100644 index 0000000000..8c6b0c916d --- /dev/null +++ b/lib/compiler/src/beam_z.erl @@ -0,0 +1,79 @@ +%% +%% %CopyrightBegin% +%% +%% Copyright Ericsson AB 2012. 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% +%% +%% Purpose: Run right before beam_asm to do any final fix-ups or clean-ups. +%% (Mandatory.) + +-module(beam_z). + +-export([module/2]). + +module({Mod,Exp,Attr,Fs0,Lc}, _Opt) -> + Fs = [function(F) || F <- Fs0], + {ok,{Mod,Exp,Attr,Fs,Lc}}. + +function({function,Name,Arity,CLabel,Is0}) -> + try + Is = undo_renames(Is0), + {function,Name,Arity,CLabel,Is} + catch + Class:Error -> + Stack = erlang:get_stacktrace(), + io:fwrite("Function: ~w/~w\n", [Name,Arity]), + erlang:raise(Class, Error, Stack) + end. + +undo_renames([{call_ext,2,send}|Is]) -> + [send|undo_renames(Is)]; +undo_renames([{apply,A},{deallocate,N},return|Is]) -> + [{apply_last,A,N}|undo_renames(Is)]; +undo_renames([{call,A,F},{deallocate,N},return|Is]) -> + [{call_last,A,F,N}|undo_renames(Is)]; +undo_renames([{call_ext,A,F},{deallocate,N},return|Is]) -> + [{call_ext_last,A,F,N}|undo_renames(Is)]; +undo_renames([{call,A,F},return|Is]) -> + [{call_only,A,F}|undo_renames(Is)]; +undo_renames([{call_ext,A,F},return|Is]) -> + [{call_ext_only,A,F}|undo_renames(Is)]; +undo_renames([I|Is]) -> + [undo_rename(I)|undo_renames(Is)]; +undo_renames([]) -> []. + +undo_rename({bs_put,F,{I,U,Fl},[Sz,Src]}) -> + {I,F,Sz,U,Fl,Src}; +undo_rename({bs_put,F,{I,Fl},[Src]}) -> + {I,F,Fl,Src}; +undo_rename({bs_put,{f,0},{bs_put_string,_,_}=I,[]}) -> + I; +undo_rename({bif,bs_add=I,F,[Src1,Src2,{integer,U}],Dst}) -> + {I,F,[Src1,Src2,U],Dst}; +undo_rename({bif,bs_utf8_size=I,F,[Src],Dst}) -> + {I,F,Src,Dst}; +undo_rename({bif,bs_utf16_size=I,F,[Src],Dst}) -> + {I,F,Src,Dst}; +undo_rename({bs_init,F,{I,U,Flags},none,[Sz,Src],Dst}) -> + {I,F,Sz,U,Src,Flags,Dst}; +undo_rename({bs_init,F,{I,Extra,Flags},Live,[Sz],Dst}) -> + {I,F,Sz,Extra,Live,Flags,Dst}; +undo_rename({bs_init,F,{I,Extra,U,Flags},Live,[Sz,Src],Dst}) -> + {I,F,Sz,Extra,Live,U,Src,Flags,Dst}; +undo_rename({bs_init,_,bs_init_writable=I,_,_,_}) -> + I; +undo_rename({select,I,Reg,Fail,List}) -> + {I,Reg,Fail,{list,List}}; +undo_rename(I) -> I. diff --git a/lib/compiler/src/compile.erl b/lib/compiler/src/compile.erl index 0a368df5d6..497af2b52c 100644 --- a/lib/compiler/src/compile.erl +++ b/lib/compiler/src/compile.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 1996-2012. All Rights Reserved. +%% Copyright Ericsson AB 1996-2013. 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 @@ -202,36 +202,38 @@ format_error(bad_crypto_key) -> format_error(no_crypto_key) -> "no crypto key supplied."; format_error({native, E}) -> - io_lib:fwrite("native-code compilation failed with reason: ~P.", + io_lib:fwrite("native-code compilation failed with reason: ~tP.", [E, 25]); format_error({native_crash,E,Stk}) -> - io_lib:fwrite("native-code compilation crashed with reason: ~P.\n~P\n", + io_lib:fwrite("native-code compilation crashed with reason: ~tP.\n~tP\n", [E,25,Stk,25]); format_error({open,E}) -> - io_lib:format("open error '~s'", [file:format_error(E)]); + io_lib:format("open error '~ts'", [file:format_error(E)]); format_error({epp,E}) -> epp:format_error(E); format_error(write_error) -> "error writing file"; format_error({rename,From,To,Error}) -> - io_lib:format("failed to rename ~s to ~s: ~s", + io_lib:format("failed to rename ~ts to ~ts: ~ts", [From,To,file:format_error(Error)]); format_error({delete,File,Error}) -> - io_lib:format("failed to delete file ~s: ~s", + io_lib:format("failed to delete file ~ts: ~ts", [File,file:format_error(Error)]); format_error({delete_temp,File,Error}) -> - io_lib:format("failed to delete temporary file ~s: ~s", + io_lib:format("failed to delete temporary file ~ts: ~ts", [File,file:format_error(Error)]); format_error({parse_transform,M,R}) -> - io_lib:format("error in parse transform '~s': ~p", [M, R]); + io_lib:format("error in parse transform '~s': ~tp", [M, R]); +format_error({undef_parse_transform,M}) -> + io_lib:format("undefined parse transform '~s'", [M]); format_error({core_transform,M,R}) -> - io_lib:format("error in core transform '~s': ~p", [M, R]); + io_lib:format("error in core transform '~s': ~tp", [M, R]); format_error({crash,Pass,Reason}) -> - io_lib:format("internal error in ~p;\ncrash reason: ~p", [Pass,Reason]); + io_lib:format("internal error in ~p;\ncrash reason: ~tp", [Pass,Reason]); format_error({bad_return,Pass,Reason}) -> - io_lib:format("internal error in ~p;\nbad return value: ~p", [Pass,Reason]); + io_lib:format("internal error in ~p;\nbad return value: ~tp", [Pass,Reason]); format_error({module_name,Mod,Filename}) -> - io_lib:format("Module name '~s' does not match file name '~s'", + io_lib:format("Module name '~s' does not match file name '~ts'", [Mod,Filename]). %% The compile state record. @@ -246,6 +248,7 @@ format_error({module_name,Mod,Filename}) -> abstract_code=[], %Abstract code for debugger. options=[] :: [option()], %Options for compilation mod_options=[] :: [option()], %Options for module_info + encoding=none :: none | epp:source_encoding(), errors=[], warnings=[]}). @@ -268,7 +271,7 @@ internal_comp(Passes, File, Suffix, St0) -> ofile=objfile(Base, St0)}, Run = case member(time, St1#compile.options) of true -> - io:format("Compiling ~p\n", [File]), + io:format("Compiling ~tp\n", [File]), fun run_tc/2; false -> fun({_Name,Fun}, St) -> catch Fun(St) end end, @@ -551,12 +554,12 @@ select_list_passes_1([{iff,Flag,{done,Ext}}|Ps], Opts, Acc) -> end; select_list_passes_1([{iff=Op,Flag,List0}|Ps], Opts, Acc) when is_list(List0) -> case select_list_passes(List0, Opts) of - {done,_}=Done -> Done; + {done,List} -> {done,reverse(Acc) ++ List}; {not_done,List} -> select_list_passes_1(Ps, Opts, [{Op,Flag,List}|Acc]) end; select_list_passes_1([{unless=Op,Flag,List0}|Ps], Opts, Acc) when is_list(List0) -> case select_list_passes(List0, Opts) of - {done,_}=Done -> Done; + {done,List} -> {done,reverse(Acc) ++ List}; {not_done,List} -> select_list_passes_1(Ps, Opts, [{Op,Flag,List}|Acc]) end; select_list_passes_1([P|Ps], Opts, Acc) -> @@ -630,7 +633,8 @@ kernel_passes() -> asm_passes() -> %% Assembly level optimisations. [{delay, - [{unless,no_postopt, + [{pass,beam_a}, + {unless,no_postopt, [{pass,beam_block}, {iff,dblk,{listing,"block"}}, {unless,no_except,{pass,beam_except}}, @@ -657,13 +661,11 @@ asm_passes() -> {iff,dtrim,{listing,"trim"}}, {pass,beam_flatten}]}, - %% If post optimizations are turned off, we still coalesce - %% adjacent labels and remove unused labels to keep the - %% HiPE compiler happy. - {iff,no_postopt, - [?pass(beam_unused_labels), - {pass,beam_clean}]}, + %% If post optimizations are turned off, we still + %% need to do a few clean-ups to code. + {iff,no_postopt,[{pass,beam_clean}]}, + {pass,beam_z}, {iff,dopt,{listing,"optimize"}}, {iff,'S',{listing,"S"}}, {iff,'to_asm',{done,"S"}}]}, @@ -681,7 +683,7 @@ binary_passes() -> %% Remove the target file so we don't have an old one if the compilation fail. remove_file(St) -> - file:delete(St#compile.ofile), + _ = file:delete(St#compile.ofile), {ok,St}. -record(asm_module, {module, @@ -733,8 +735,9 @@ collect_asm([X | Rest], R) -> beam_consult_asm(St) -> case file:consult(St#compile.ifile) of {ok, Forms0} -> + Encoding = epp:read_encoding(St#compile.ifile), {Module, Forms} = preprocess_asm_forms(Forms0), - {ok,St#compile{module=Module, code=Forms}}; + {ok,St#compile{module=Module, code=Forms, encoding=Encoding}}; {error,E} -> Es = [{St#compile.ifile,[{none,?MODULE,{open,E}}]}], {error,St#compile{errors=St#compile.errors ++ Es}} @@ -776,7 +779,8 @@ parse_module(St) -> R = epp:parse_file(St#compile.ifile, IncludePath, pre_defs(Opts)), case R of {ok,Forms} -> - {ok,St#compile{code=Forms}}; + Encoding = epp:read_encoding(St#compile.ifile), + {ok,St#compile{code=Forms,encoding=Encoding}}; {error,E} -> Es = [{St#compile.ifile,[{none,?MODULE,{epp,E}}]}], {error,St#compile{errors=St#compile.errors ++ Es}} @@ -850,6 +854,10 @@ foldl_transform(St, [T|Ts]) -> {error,Es,Ws} -> {error,St#compile{warnings=St#compile.warnings ++ Ws, errors=St#compile.errors ++ Es}}; + {'EXIT',{undef,_}} -> + Es = [{St#compile.ifile,[{none,compile, + {undef_parse_transform,T}}]}], + {error,St#compile{errors=St#compile.errors ++ Es}}; {'EXIT',R} -> Es = [{St#compile.ifile,[{none,compile,{parse_transform,T,R}}]}], {error,St#compile{errors=St#compile.errors ++ Es}}; @@ -887,7 +895,6 @@ foldl_core_transforms(St, []) -> {ok,St}. %%% Fetches the module name from a list of forms. The module attribute must %%% be present. -get_module([{attribute,_,module,{M,_As}} | _]) -> M; get_module([{attribute,_,module,M} | _]) -> M; get_module([_ | Rest]) -> get_module(Rest). @@ -899,11 +906,8 @@ add_default_base(St, Forms) -> F = St#compile.filename, case F of "" -> - M = case get_module(Forms) of - PackageModule when is_list(PackageModule) -> last(PackageModule); - M0 -> M0 - end, - St#compile{base = atom_to_list(M)}; + M = get_module(Forms), + St#compile{base=atom_to_list(M)}; _ -> St end. @@ -1085,10 +1089,10 @@ makedep_output(#compile{code=Code,options=Opts,ofile=Ofile}=St) -> {ok,Output1,CloseOutput} -> try %% Write the Makefile. - io:fwrite(Output1, "~s", [Code]), + io:fwrite(Output1, "~ts", [Code]), %% Close the file if relevant. if - CloseOutput -> file:close(Output1); + CloseOutput -> ok = file:close(Output1); true -> ok end, {ok,St} @@ -1227,7 +1231,7 @@ encrypt(des3_cbc=Mode, {K1,K2,K3, IVec}, Bin0) -> random_bytes(N) -> {A,B,C} = now(), - random:seed(A, B, C), + _ = random:seed(A, B, C), random_bytes_1(N, []). random_bytes_1(0, Acc) -> Acc; @@ -1236,10 +1240,6 @@ random_bytes_1(N, Acc) -> random_bytes_1(N-1, [random:uniform(255)|Acc]). save_core_code(St) -> {ok,St#compile{core_code=cerl:from_records(St#compile.code)}}. -beam_unused_labels(#compile{code=Code0}=St) -> - Code = beam_jump:module_labels(Code0), - {ok,St#compile{code=Code}}. - beam_asm(#compile{ifile=File,code=Code0, abstract_code=Abst,mod_options=Opts0}=St) -> Source = filename:absname(File), @@ -1338,16 +1338,12 @@ save_binary(#compile{code=none}=St) -> {ok,St}; save_binary(#compile{module=Mod,ofile=Outfile, options=Opts}=St) -> %% Test that the module name and output file name match. - %% We must take care to not completely break a packaged module - %% (even though packages still is as an experimental, unsupported - %% feature) - so we will extract the last part of a packaged - %% module name and compare only that. case member(no_error_module_mismatch, Opts) of true -> save_binary_1(St); false -> Base = filename:rootname(filename:basename(Outfile)), - case lists:last(packages:split(Mod)) of + case atom_to_list(Mod) of Base -> save_binary_1(St); _ -> @@ -1423,28 +1419,28 @@ report_warnings(#compile{options=Opts,warnings=Ws0}) -> end. format_message(F, P, [{{Line,Column}=Loc,Mod,E}|Es]) -> - M = {{F,Loc},io_lib:format("~s:~w:~w ~s~s\n", + M = {{F,Loc},io_lib:format("~ts:~w:~w ~s~ts\n", [F,Line,Column,P,Mod:format_error(E)])}, [M|format_message(F, P, Es)]; format_message(F, P, [{Line,Mod,E}|Es]) -> - M = {{F,{Line,0}},io_lib:format("~s:~w: ~s~s\n", + M = {{F,{Line,0}},io_lib:format("~ts:~w: ~s~ts\n", [F,Line,P,Mod:format_error(E)])}, [M|format_message(F, P, Es)]; format_message(F, P, [{Mod,E}|Es]) -> - M = {none,io_lib:format("~s: ~s~s\n", [F,P,Mod:format_error(E)])}, + M = {none,io_lib:format("~ts: ~s~ts\n", [F,P,Mod:format_error(E)])}, [M|format_message(F, P, Es)]; format_message(_, _, []) -> []. %% list_errors(File, ErrorDescriptors) -> ok list_errors(F, [{{Line,Column},Mod,E}|Es]) -> - io:fwrite("~s:~w:~w: ~s\n", [F,Line,Column,Mod:format_error(E)]), + io:fwrite("~ts:~w:~w: ~ts\n", [F,Line,Column,Mod:format_error(E)]), list_errors(F, Es); list_errors(F, [{Line,Mod,E}|Es]) -> - io:fwrite("~s:~w: ~s\n", [F,Line,Mod:format_error(E)]), + io:fwrite("~ts:~w: ~ts\n", [F,Line,Mod:format_error(E)]), list_errors(F, Es); list_errors(F, [{Mod,E}|Es]) -> - io:fwrite("~s: ~s\n", [F,Mod:format_error(E)]), + io:fwrite("~ts: ~ts\n", [F,Mod:format_error(E)]), list_errors(F, Es); list_errors(_F, []) -> ok. @@ -1500,10 +1496,12 @@ src_listing(Ext, St) -> Ext, St). do_src_listing(Lf, Fs) -> - foreach(fun (F) -> io:put_chars(Lf, [erl_pp:form(F),"\n"]) end, + Opts = [lists:keyfind(encoding, 1, io:getopts(Lf))], + foreach(fun (F) -> io:put_chars(Lf, [erl_pp:form(F, Opts),"\n"]) end, Fs). -listing(Ext, St) -> +listing(Ext, St0) -> + St = St0#compile{encoding = none}, listing(fun(Lf, Fs) -> beam_listing:module(Lf, Fs) end, Ext, St). listing(LFun, Ext, St) -> @@ -1511,6 +1509,7 @@ listing(LFun, Ext, St) -> case file:open(Lfile, [write,delayed_write]) of {ok,Lf} -> Code = restore_expanded_types(Ext, St#compile.code), + output_encoding(Lf, St), LFun(Lf, Code), ok = file:close(Lf), {ok,St}; @@ -1519,6 +1518,12 @@ listing(LFun, Ext, St) -> {error,St#compile{errors=St#compile.errors ++ Es}} end. +output_encoding(F, #compile{encoding = none}) -> + ok = io:setopts(F, [{encoding, epp:default_encoding()}]); +output_encoding(F, #compile{encoding = Encoding}) -> + ok = io:setopts(F, [{encoding, Encoding}]), + ok = io:fwrite(F, <<"%% ~s\n">>, [epp:encoding_to_string(Encoding)]). + restore_expanded_types("P", Fs) -> epp:restore_typed_record_fields(Fs); restore_expanded_types("E", {M,I,Fs0}) -> diff --git a/lib/compiler/src/compiler.app.src b/lib/compiler/src/compiler.app.src index 1133882728..8775c84698 100644 --- a/lib/compiler/src/compiler.app.src +++ b/lib/compiler/src/compiler.app.src @@ -1,7 +1,7 @@ % This is an -*- erlang -*- file. %% %CopyrightBegin% %% -%% Copyright Ericsson AB 1997-2011. All Rights Reserved. +%% Copyright Ericsson AB 1997-2013. 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 @@ -20,6 +20,7 @@ [{description, "ERTS CXC 138 10"}, {vsn, "%VSN%"}, {modules, [ + beam_a, beam_asm, beam_block, beam_bool, @@ -40,6 +41,7 @@ beam_type, beam_utils, beam_validator, + beam_z, cerl, cerl_clauses, cerl_inline, @@ -55,7 +57,6 @@ sys_core_dsetel, sys_core_fold, sys_core_inline, - sys_expand_pmod, sys_pre_attributes, sys_pre_expand, v3_codegen, diff --git a/lib/compiler/src/core_lint.erl b/lib/compiler/src/core_lint.erl index b513a8965c..1e8983f594 100644 --- a/lib/compiler/src/core_lint.erl +++ b/lib/compiler/src/core_lint.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 1999-2010. All Rights Reserved. +%% Copyright Ericsson AB 1999-2013. 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 @@ -247,7 +247,8 @@ gbody(E, Def, Rt, St0) -> false -> St1 end. -gexpr(#c_var{name=N}, Def, _Rt, St) -> expr_var(N, Def, St); +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); @@ -308,7 +309,7 @@ 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)); expr(#c_seq{arg=Arg,body=B}, Def, Rt, St0) -> - St1 = expr(Arg, Def, any, St0), %Ignore values + St1 = expr(Arg, Def, 1, St0), body(B, Def, Rt, St1); expr(#c_let{vars=Vs,arg=Arg,body=B}, Def, Rt, St0) -> St1 = body(Arg, Def, let_varcount(Vs), St0), %This is a body diff --git a/lib/compiler/src/core_scan.erl b/lib/compiler/src/core_scan.erl index 5aab8ae855..0ca2f57dde 100644 --- a/lib/compiler/src/core_scan.erl +++ b/lib/compiler/src/core_scan.erl @@ -1,7 +1,8 @@ +%% -*- coding: utf-8 -*- %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2000-2009. All Rights Reserved. +%% Copyright Ericsson AB 2000-2012. 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 @@ -31,16 +32,16 @@ %% 173 - 176 { - ~ punctuation %% 177 DEL control %% 200 - 237 control -%% 240 - 277 NBSP - � punctuation -%% 300 - 326 � - � uppercase -%% 327 � punctuation -%% 330 - 336 � - � uppercase -%% 337 - 366 � - � lowercase -%% 367 � punctuation -%% 370 - 377 � - � lowercase +%% 240 - 277 NBSP - ¿ punctuation +%% 300 - 326 À - Ö uppercase +%% 327 × punctuation +%% 330 - 336 Ø - Þ uppercase +%% 337 - 366 ß - ö lowercase +%% 367 ÷ punctuation +%% 370 - 377 ø - ÿ lowercase %% %% Many punctuation characters region have special meaning. Must -%% watch using � \327, bvery close to x \170 +%% watch using × \327, bvery close to x \170 -module(core_scan). @@ -239,11 +240,11 @@ scan1([C|Cs], Toks, Pos) when C >= $\200, C =< $\240 -> scan1(Cs, Toks, Pos); scan1([C|Cs], Toks, Pos) when C >= $a, C =< $z -> %Keywords scan_key_word(C, Cs, Toks, Pos); -scan1([C|Cs], Toks, Pos) when C >= $�, C =< $�, C /= $� -> +scan1([C|Cs], Toks, Pos) when C >= $ß, C =< $ÿ, C /= $÷ -> scan_key_word(C, Cs, Toks, Pos); scan1([C|Cs], Toks, Pos) when C >= $A, C =< $Z -> %Variables scan_variable(C, Cs, Toks, Pos); -scan1([C|Cs], Toks, Pos) when C >= $�, C =< $�, C /= $� -> +scan1([C|Cs], Toks, Pos) when C >= $À, C =< $Þ, C /= $× -> scan_variable(C, Cs, Toks, Pos); scan1([C|Cs], Toks, Pos) when C >= $0, C =< $9 -> %Numbers scan_number(C, Cs, Toks, Pos); @@ -308,9 +309,9 @@ scan_name([], Ncs) -> {Ncs,[]}. name_char(C) when C >= $a, C =< $z -> true; -name_char(C) when C >= $�, C =< $�, C /= $� -> true; +name_char(C) when C >= $ß, C =< $ÿ, C /= $÷ -> true; name_char(C) when C >= $A, C =< $Z -> true; -name_char(C) when C >= $�, C =< $�, C /= $� -> true; +name_char(C) when C >= $À, C =< $Þ, C /= $× -> true; name_char(C) when C >= $0, C =< $9 -> true; name_char($_) -> true; name_char($@) -> true; diff --git a/lib/compiler/src/erl_bifs.erl b/lib/compiler/src/erl_bifs.erl index 9ad2378d00..cc07f0b9bc 100644 --- a/lib/compiler/src/erl_bifs.erl +++ b/lib/compiler/src/erl_bifs.erl @@ -68,6 +68,8 @@ is_pure(erlang, atom_to_list, 1) -> true; is_pure(erlang, binary_part, 2) -> true; is_pure(erlang, binary_part, 3) -> true; is_pure(erlang, binary_to_atom, 2) -> true; +is_pure(erlang, binary_to_float, 1) -> true; +is_pure(erlang, binary_to_integer, 1) -> true; is_pure(erlang, binary_to_list, 1) -> true; is_pure(erlang, binary_to_list, 3) -> true; is_pure(erlang, bit_size, 1) -> true; @@ -75,8 +77,10 @@ is_pure(erlang, byte_size, 1) -> true; is_pure(erlang, element, 2) -> true; is_pure(erlang, float, 1) -> true; is_pure(erlang, float_to_list, 1) -> true; +is_pure(erlang, float_to_binary, 1) -> true; is_pure(erlang, hash, 2) -> false; is_pure(erlang, hd, 1) -> true; +is_pure(erlang, integer_to_binary, 1) -> true; is_pure(erlang, integer_to_list, 1) -> true; is_pure(erlang, is_atom, 1) -> true; is_pure(erlang, is_boolean, 1) -> true; diff --git a/lib/compiler/src/sys_core_fold.erl b/lib/compiler/src/sys_core_fold.erl index 18fba7962b..cda3f7d81e 100644 --- a/lib/compiler/src/sys_core_fold.erl +++ b/lib/compiler/src/sys_core_fold.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 1999-2012. All Rights Reserved. +%% Copyright Ericsson AB 1999-2013. 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 @@ -132,7 +132,12 @@ body(Body, Sub) -> body(#c_values{anno=A,es=Es0}, Ctxt, Sub) -> Es1 = expr_list(Es0, Ctxt, Sub), - #c_values{anno=A,es=Es1}; + case Ctxt of + value -> + #c_values{anno=A,es=Es1}; + effect -> + make_effect_seq(Es1, Sub) + end; body(E, Ctxt, Sub) -> ?ASSERT(verify_scope(E, Sub)), expr(E, Ctxt, Sub). @@ -686,11 +691,14 @@ call_1(#c_call{anno=Anno}, lists, all, [Arg1,Arg2], Sub) -> C1 = #c_clause{pats=[#c_cons{hd=X, tl=Xs}], guard=#c_literal{val=true}, body=#c_case{arg=#c_apply{anno=Anno, op=F, args=[X]}, clauses = [CC1, CC2, CC3]}}, - C2 = #c_clause{pats=[#c_literal{val=[]}], guard=#c_literal{val=true}, + C2 = #c_clause{pats=[#c_literal{val=[]}], + guard=#c_call{module=#c_literal{val=erlang}, + name=#c_literal{val=is_function}, + args=[F, #c_literal{val=1}]}, body=#c_literal{val=true}}, - Err2 = #c_tuple{es=[#c_literal{val='function_clause'}, Xs]}, + Err2 = #c_tuple{es=[#c_literal{val='function_clause'}, F, Xs]}, C3 = #c_clause{pats=[Xs], guard=#c_literal{val=true}, - body=match_fail(Anno, Err2)}, + body=match_fail([{function_name,{'lists^all',1}}|Anno], Err2)}, Fun = #c_fun{vars=[Xs], body=#c_case{arg=Xs, clauses=[C1, C2, C3]}}, L = #c_var{name='L'}, @@ -713,11 +721,14 @@ call_1(#c_call{anno=Anno}, lists, any, [Arg1,Arg2], Sub) -> C1 = #c_clause{pats=[#c_cons{hd=X, tl=Xs}], guard=#c_literal{val=true}, body=#c_case{arg=#c_apply{anno=Anno, op=F, args=[X]}, clauses = [CC1, CC2, CC3]}}, - C2 = #c_clause{pats=[#c_literal{val=[]}], guard=#c_literal{val=true}, + C2 = #c_clause{pats=[#c_literal{val=[]}], + guard=#c_call{module=#c_literal{val=erlang}, + name=#c_literal{val=is_function}, + args=[F, #c_literal{val=1}]}, body=#c_literal{val=false}}, - Err2 = #c_tuple{es=[#c_literal{val='function_clause'}, Xs]}, + Err2 = #c_tuple{es=[#c_literal{val='function_clause'}, F, Xs]}, C3 = #c_clause{pats=[Xs], guard=#c_literal{val=true}, - body=match_fail(Anno, Err2)}, + body=match_fail([{function_name,{'lists^any',1}}|Anno], Err2)}, Fun = #c_fun{vars=[Xs], body=#c_case{arg=Xs, clauses=[C1, C2, C3]}}, L = #c_var{name='L'}, @@ -733,11 +744,14 @@ call_1(#c_call{anno=Anno}, lists, foreach, [Arg1,Arg2], Sub) -> C1 = #c_clause{pats=[#c_cons{hd=X, tl=Xs}], guard=#c_literal{val=true}, body=#c_seq{arg=#c_apply{anno=Anno, op=F, args=[X]}, body=#c_apply{anno=Anno, op=Loop, args=[Xs]}}}, - C2 = #c_clause{pats=[#c_literal{val=[]}], guard=#c_literal{val=true}, + C2 = #c_clause{pats=[#c_literal{val=[]}], + guard=#c_call{module=#c_literal{val=erlang}, + name=#c_literal{val=is_function}, + args=[F, #c_literal{val=1}]}, body=#c_literal{val=ok}}, - Err = #c_tuple{es=[#c_literal{val='function_clause'}, Xs]}, + Err = #c_tuple{es=[#c_literal{val='function_clause'}, F, Xs]}, C3 = #c_clause{pats=[Xs], guard=#c_literal{val=true}, - body=match_fail(Anno, Err)}, + body=match_fail([{function_name,{'lists^foreach',1}}|Anno], Err)}, Fun = #c_fun{vars=[Xs], body=#c_case{arg=Xs, clauses=[C1, C2, C3]}}, L = #c_var{name='L'}, @@ -756,14 +770,18 @@ call_1(#c_call{anno=Anno}, lists, map, [Arg1,Arg2], Sub) -> op=F, args=[X]}, body=#c_cons{hd=H, + anno=[compiler_generated], tl=#c_apply{anno=Anno, op=Loop, args=[Xs]}}}}, - C2 = #c_clause{pats=[#c_literal{val=[]}], guard=#c_literal{val=true}, + C2 = #c_clause{pats=[#c_literal{val=[]}], + guard=#c_call{module=#c_literal{val=erlang}, + name=#c_literal{val=is_function}, + args=[F, #c_literal{val=1}]}, body=#c_literal{val=[]}}, - Err = #c_tuple{es=[#c_literal{val='function_clause'}, Xs]}, + Err = #c_tuple{es=[#c_literal{val='function_clause'}, F, Xs]}, C3 = #c_clause{pats=[Xs], guard=#c_literal{val=true}, - body=match_fail(Anno, Err)}, + body=match_fail([{function_name,{'lists^map',1}}|Anno], Err)}, Fun = #c_fun{vars=[Xs], body=#c_case{arg=Xs, clauses=[C1, C2, C3]}}, L = #c_var{name='L'}, @@ -780,18 +798,21 @@ call_1(#c_call{anno=Anno}, lists, flatmap, [Arg1,Arg2], Sub) -> C1 = #c_clause{pats=[#c_cons{hd=X, tl=Xs}], guard=#c_literal{val=true}, body=#c_let{vars=[H], arg=#c_apply{anno=Anno, op=F, args=[X]}, - body=#c_call{anno=Anno, + body=#c_call{anno=[compiler_generated|Anno], module=#c_literal{val=erlang}, name=#c_literal{val='++'}, args=[H, #c_apply{anno=Anno, op=Loop, args=[Xs]}]}}}, - C2 = #c_clause{pats=[#c_literal{val=[]}], guard=#c_literal{val=true}, + C2 = #c_clause{pats=[#c_literal{val=[]}], + guard=#c_call{module=#c_literal{val=erlang}, + name=#c_literal{val=is_function}, + args=[F, #c_literal{val=1}]}, body=#c_literal{val=[]}}, - Err = #c_tuple{es=[#c_literal{val='function_clause'}, Xs]}, + Err = #c_tuple{es=[#c_literal{val='function_clause'}, F, Xs]}, C3 = #c_clause{pats=[Xs], guard=#c_literal{val=true}, - body=match_fail(Anno, Err)}, + body=match_fail([{function_name,{'lists^flatmap',1}}|Anno], Err)}, Fun = #c_fun{vars=[Xs], body=#c_case{arg=Xs, clauses=[C1, C2, C3]}}, L = #c_var{name='L'}, @@ -807,7 +828,7 @@ call_1(#c_call{anno=Anno}, lists, filter, [Arg1,Arg2], Sub) -> B = #c_var{name='B'}, Err1 = #c_tuple{es=[#c_literal{val='case_clause'}, X]}, CC1 = #c_clause{pats=[#c_literal{val=true}], guard=#c_literal{val=true}, - body=#c_cons{hd=X, tl=Xs}}, + body=#c_cons{anno=[compiler_generated], hd=X, tl=Xs}}, CC2 = #c_clause{pats=[#c_literal{val=false}], guard=#c_literal{val=true}, body=Xs}, CC3 = #c_clause{pats=[X], guard=#c_literal{val=true}, @@ -821,11 +842,14 @@ call_1(#c_call{anno=Anno}, lists, filter, [Arg1,Arg2], Sub) -> op=Loop, args=[Xs]}, body=Case}}}, - C2 = #c_clause{pats=[#c_literal{val=[]}], guard=#c_literal{val=true}, + C2 = #c_clause{pats=[#c_literal{val=[]}], + guard=#c_call{module=#c_literal{val=erlang}, + name=#c_literal{val=is_function}, + args=[F, #c_literal{val=1}]}, body=#c_literal{val=[]}}, - Err2 = #c_tuple{es=[#c_literal{val='function_clause'}, Xs]}, + Err2 = #c_tuple{es=[#c_literal{val='function_clause'}, F, Xs]}, C3 = #c_clause{pats=[Xs], guard=#c_literal{val=true}, - body=match_fail(Anno, Err2)}, + body=match_fail([{function_name,{'lists^filter',1}}|Anno], Err2)}, Fun = #c_fun{vars=[Xs], body=#c_case{arg=Xs, clauses=[C1, C2, C3]}}, L = #c_var{name='L'}, @@ -845,10 +869,14 @@ call_1(#c_call{anno=Anno}, lists, foldl, [Arg1,Arg2,Arg3], Sub) -> args=[Xs, #c_apply{anno=Anno, op=F, args=[X, A]}]}}, - C2 = #c_clause{pats=[#c_literal{val=[]}], guard=#c_literal{val=true}, body=A}, - Err = #c_tuple{es=[#c_literal{val='function_clause'}, Xs]}, + C2 = #c_clause{pats=[#c_literal{val=[]}], + guard=#c_call{module=#c_literal{val=erlang}, + name=#c_literal{val=is_function}, + args=[F, #c_literal{val=2}]}, + body=A}, + Err = #c_tuple{es=[#c_literal{val='function_clause'}, F, A, Xs]}, C3 = #c_clause{pats=[Xs], guard=#c_literal{val=true}, - body=match_fail(Anno, Err)}, + body=match_fail([{function_name,{'lists^foldl',2}}|Anno], Err)}, Fun = #c_fun{vars=[Xs, A], body=#c_case{arg=Xs, clauses=[C1, C2, C3]}}, L = #c_var{name='L'}, @@ -868,10 +896,14 @@ call_1(#c_call{anno=Anno}, lists, foldr, [Arg1,Arg2,Arg3], Sub) -> args=[X, #c_apply{anno=Anno, op=Loop, args=[Xs, A]}]}}, - C2 = #c_clause{pats=[#c_literal{val=[]}], guard=#c_literal{val=true}, body=A}, - Err = #c_tuple{es=[#c_literal{val='function_clause'}, Xs]}, + C2 = #c_clause{pats=[#c_literal{val=[]}], + guard=#c_call{module=#c_literal{val=erlang}, + name=#c_literal{val=is_function}, + args=[F, #c_literal{val=2}]}, + body=A}, + Err = #c_tuple{es=[#c_literal{val='function_clause'}, F, A, Xs]}, C3 = #c_clause{pats=[Xs], guard=#c_literal{val=true}, - body=match_fail(Anno, Err)}, + body=match_fail([{function_name,{'lists^foldr',2}}|Anno], Err)}, Fun = #c_fun{vars=[Xs, A], body=#c_case{arg=Xs, clauses=[C1, C2, C3]}}, L = #c_var{name='L'}, @@ -901,7 +933,10 @@ call_1(#c_call{anno=Anno}, lists, mapfoldl, [Arg1,Arg2,Arg3], Sub) -> op=Loop, args=[Xs, Avar]}, #c_tuple{es=[Xs, Avar]}, - #c_tuple{es=[#c_cons{hd=X, tl=Xs}, Avar]}) + #c_tuple{anno=[compiler_generated], + es=[#c_cons{anno=[compiler_generated], + hd=X, tl=Xs}, + Avar]}) %%% Multiple-value version %%% #c_let{vars=[Xs,A], %%% %% The tuple here will be optimised @@ -910,14 +945,18 @@ call_1(#c_call{anno=Anno}, lists, mapfoldl, [Arg1,Arg2,Arg3], Sub) -> %%% body=#c_values{es=[#c_cons{hd=X, tl=Xs}, %%% A]}} )}, - C2 = #c_clause{pats=[#c_literal{val=[]}], guard=#c_literal{val=true}, + C2 = #c_clause{pats=[#c_literal{val=[]}], + guard=#c_call{module=#c_literal{val=erlang}, + name=#c_literal{val=is_function}, + args=[F, #c_literal{val=2}]}, %%% Tuple passing version - body=#c_tuple{es=[#c_literal{val=[]}, Avar]}}, + body=#c_tuple{anno=[compiler_generated], + es=[#c_literal{val=[]}, Avar]}}, %%% Multiple-value version %%% body=#c_values{es=[#c_literal{val=[]}, A]}}, - Err = #c_tuple{es=[#c_literal{val='function_clause'}, Xs]}, + Err = #c_tuple{es=[#c_literal{val='function_clause'}, F, Avar, Xs]}, C3 = #c_clause{pats=[Xs], guard=#c_literal{val=true}, - body=match_fail(Anno, Err)}, + body=match_fail([{function_name,{'lists^mapfoldl',2}}|Anno], Err)}, Fun = #c_fun{vars=[Xs, Avar], body=#c_case{arg=Xs, clauses=[C1, C2, C3]}}, L = #c_var{name='L'}, @@ -955,7 +994,9 @@ call_1(#c_call{anno=Anno}, lists, mapfoldr, [Arg1,Arg2,Arg3], Sub) -> #c_tuple{es=[Xs, Avar]}, Match(#c_apply{anno=Anno, op=F, args=[X, Avar]}, #c_tuple{es=[X, Avar]}, - #c_tuple{es=[#c_cons{hd=X, tl=Xs}, Avar]})) + #c_tuple{anno=[compiler_generated], + es=[#c_cons{anno=[compiler_generated], + hd=X, tl=Xs}, Avar]})) %%% Multiple-value version %%% body=#c_let{vars=[Xs,A], %%% %% The tuple will be optimised away @@ -965,14 +1006,18 @@ call_1(#c_call{anno=Anno}, lists, mapfoldr, [Arg1,Arg2,Arg3], Sub) -> %%% #c_values{es=[#c_cons{hd=X, tl=Xs}, %%% A]})} }, - C2 = #c_clause{pats=[#c_literal{val=[]}], guard=#c_literal{val=true}, + C2 = #c_clause{pats=[#c_literal{val=[]}], + guard=#c_call{module=#c_literal{val=erlang}, + name=#c_literal{val=is_function}, + args=[F, #c_literal{val=2}]}, %%% Tuple passing version - body=#c_tuple{es=[#c_literal{val=[]}, Avar]}}, + body=#c_tuple{anno=[compiler_generated], + es=[#c_literal{val=[]}, Avar]}}, %%% Multiple-value version %%% body=#c_values{es=[#c_literal{val=[]}, A]}}, - Err = #c_tuple{es=[#c_literal{val='function_clause'}, Xs]}, + Err = #c_tuple{es=[#c_literal{val='function_clause'}, F, Avar, Xs]}, C3 = #c_clause{pats=[Xs], guard=#c_literal{val=true}, - body=match_fail(Anno, Err)}, + body=match_fail([{function_name,{'lists^mapfoldr',2}}|Anno], Err)}, Fun = #c_fun{vars=[Xs, Avar], body=#c_case{arg=Xs, clauses=[C1, C2, C3]}}, L = #c_var{name='L'}, @@ -1232,6 +1277,8 @@ eval_element(Call, #c_literal{val=Pos}, #c_var{name=V}, Types) true -> eval_failure(Call, badarg) end; + {ok,_} -> + eval_failure(Call, badarg); error -> Call end; @@ -2632,16 +2679,19 @@ bsm_nonempty([#c_clause{pats=Ps}|Cs], Pos) -> bsm_nonempty([], _ ) -> false. %% bsm_ensure_no_partition(Cs, Pos) -> ok (exception if problem) -%% We must make sure that binary matching is not partitioned between +%% We must make sure that matching is not partitioned between %% variables like this: %% foo(<<...>>) -> ... -%% foo(Var) when ... -> ... -%% foo(<<...>>) -> +%% foo(<Variable>) when ... -> ... +%% foo(<Any non-variable pattern>) -> %% If there is such partition, we are not allowed to reuse the binary variable -%% for the match context. Also, arguments to the left of the argument that -%% is matched against a binary, are only allowed to be simple variables, not -%% used in guards. The reason is that we must know that the binary is only -%% matched in one place. +%% for the match context. +%% +%% Also, arguments to the left of the argument that is matched +%% against a binary, are only allowed to be simple variables, not +%% used in guards. The reason is that we must know that the binary is +%% only matched in one place (i.e. there must be only one bs_start_match2 +%% instruction emitted). bsm_ensure_no_partition(Cs, Pos) -> bsm_ensure_no_partition_1(Cs, Pos, before). @@ -2649,6 +2699,12 @@ bsm_ensure_no_partition(Cs, Pos) -> %% Loop through each clause. bsm_ensure_no_partition_1([#c_clause{pats=Ps,guard=G}|Cs], Pos, State0) -> State = bsm_ensure_no_partition_2(Ps, Pos, G, simple_vars, State0), + case State of + 'after' -> + bsm_ensure_no_partition_after(Cs, Pos); + _ -> + ok + end, bsm_ensure_no_partition_1(Cs, Pos, State); bsm_ensure_no_partition_1([], _, _) -> ok. @@ -2658,8 +2714,7 @@ bsm_ensure_no_partition_2([#c_binary{}=Where|_], 1, _, Vstate, State) -> before when Vstate =:= simple_vars -> within; before -> bsm_problem(Where, Vstate); within when Vstate =:= simple_vars -> within; - within -> bsm_problem(Where, Vstate); - 'after' -> bsm_problem(Where, bin_partition) + within -> bsm_problem(Where, Vstate) end; bsm_ensure_no_partition_2([#c_alias{}=Alias|_], 1, N, Vstate, State) -> %% Retrieve the real pattern that the alias refers to and check that. @@ -2708,6 +2763,15 @@ bsm_ensure_no_partition_2([#c_var{name=V}|Ps], N, G, Vstate, S) -> bsm_ensure_no_partition_2([_|Ps], N, G, _, S) -> bsm_ensure_no_partition_2(Ps, N-1, G, bin_argument_order, S). +bsm_ensure_no_partition_after([#c_clause{pats=Ps}|Cs], Pos) -> + case nth(Pos, Ps) of + #c_var{} -> + bsm_ensure_no_partition_after(Cs, Pos); + P -> + bsm_problem(P, bin_partition) + end; +bsm_ensure_no_partition_after([], _) -> ok. + bsm_could_match_binary(#c_alias{pat=P}) -> bsm_could_match_binary(P); bsm_could_match_binary(#c_cons{}) -> false; bsm_could_match_binary(#c_tuple{}) -> false; @@ -2832,7 +2896,7 @@ format_error(useless_building) -> format_error(bin_opt_alias) -> "INFO: the '=' operator will prevent delayed sub binary optimization"; format_error(bin_partition) -> - "INFO: non-consecutive clauses that match binaries " + "INFO: matching non-variables after a previous clause matching a variable " "will prevent delayed sub binary optimization"; format_error(bin_left_var_used_in_guard) -> "INFO: a variable to the left of the binary pattern is used in a guard; " diff --git a/lib/compiler/src/sys_expand_pmod.erl b/lib/compiler/src/sys_expand_pmod.erl deleted file mode 100644 index da644b4f0b..0000000000 --- a/lib/compiler/src/sys_expand_pmod.erl +++ /dev/null @@ -1,433 +0,0 @@ -%% -%% %CopyrightBegin% -%% -%% Copyright Ericsson AB 2004-2011. 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(sys_expand_pmod). - -%% Expand function definition forms of parameterized module. We assume -%% all record definitions, imports, queries, etc., have been expanded -%% away. Any calls on the form 'foo(...)' must be calls to local -%% functions. Auto-generated functions (module_info,...) have not yet -%% been added to the function definitions, but are listed in 'defined' -%% and 'exports'. The automatic 'new/N' function is neither added to the -%% definitions nor to the 'exports'/'defines' lists yet. - --export([forms/4]). - --record(pmod, {parameters, exports, defined, predef}). - -%% TODO: more abstract handling of predefined/static functions. - -forms(Fs0, Ps, Es0, Ds0) -> - PreDef = [{module_info,0},{module_info,1}], - forms(Fs0, Ps, Es0, Ds0, PreDef). - -forms(Fs0, Ps, Es0, Ds0, PreDef) -> - St0 = #pmod{parameters=Ps,exports=Es0,defined=Ds0, predef=PreDef}, - {Fs1, St1} = forms(Fs0, St0), - Es1 = update_function_names(Es0, St1), - Ds1 = update_function_names(Ds0, St1), - Fs2 = update_forms(Fs1, St1), - {Fs2,Es1,Ds1}. - -%% This is extremely simplistic for now; all functions get an extra -%% parameter, whether they need it or not, except for static functions. - -update_function_names(Es, St) -> - [update_function_name(E, St) || E <- Es]. - -update_function_name(E={F,A}, St) when F =/= new -> - case ordsets:is_element(E, St#pmod.predef) of - true -> E; - false -> {F, A + 1} - end; -update_function_name(E, _St) -> - E. - -update_forms([{function,L,N,A,Cs}|Fs],St) when N =/= new -> - [{function,L,N,A+1,Cs}|update_forms(Fs,St)]; -update_forms([F|Fs],St) -> - [F|update_forms(Fs,St)]; -update_forms([],_St) -> - []. - -%% Process the program forms. - -forms([F0|Fs0],St0) -> - {F1,St1} = form(F0,St0), - {Fs1,St2} = forms(Fs0,St1), - {[F1|Fs1],St2}; -forms([], St0) -> - {[], St0}. - -%% Only function definitions are of interest here. State is not updated. -form({function,Line,Name0,Arity0,Clauses0},St) when Name0 =/= new -> - {Name,Arity,Clauses} = function(Name0, Arity0, Clauses0, St), - {{function,Line,Name,Arity,Clauses},St}; -%% Pass anything else through -form(F,St) -> {F,St}. - -function(Name, Arity, Clauses0, St) -> - Clauses1 = clauses(Clauses0,St), - {Name,Arity,Clauses1}. - -clauses([C|Cs],St) -> - {clause,L,H,G,B} = clause(C,St), - T = {tuple,L,[{var,L,V} || V <- ['_'|St#pmod.parameters]]}, - [{clause,L,H++[{match,L,T,{var,L,'THIS'}}],G,B}|clauses(Cs,St)]; -clauses([],_St) -> []. - -clause({clause,Line,H0,G0,B0},St) -> - H1 = head(H0,St), - G1 = guard(G0,St), - B1 = exprs(B0,St), - {clause,Line,H1,G1,B1}. - -head(Ps,St) -> patterns(Ps,St). - -patterns([P0|Ps],St) -> - P1 = pattern(P0,St), - [P1|patterns(Ps,St)]; -patterns([],_St) -> []. - -string_to_conses([], _Line, Tail) -> - Tail; -string_to_conses([E|Rest], Line, Tail) -> - {cons, Line, {integer, Line, E}, string_to_conses(Rest, Line, Tail)}. - -pattern({var,_Line,_V}=Var,_St) -> Var; -pattern({match,Line,L0,R0},St) -> - L1 = pattern(L0,St), - R1 = pattern(R0,St), - {match,Line,L1,R1}; -pattern({integer,_Line,_I}=Integer,_St) -> Integer; -pattern({char,_Line,_C}=Char,_St) -> Char; -pattern({float,_Line,_F}=Float,_St) -> Float; -pattern({atom,_Line,_A}=Atom,_St) -> Atom; -pattern({string,_Line,_S}=String,_St) -> String; -pattern({nil,_Line}=Nil,_St) -> Nil; -pattern({cons,Line,H0,T0},St) -> - H1 = pattern(H0,St), - T1 = pattern(T0,St), - {cons,Line,H1,T1}; -pattern({tuple,Line,Ps0},St) -> - Ps1 = pattern_list(Ps0,St), - {tuple,Line,Ps1}; -pattern({bin,Line,Fs},St) -> - Fs2 = pattern_grp(Fs,St), - {bin,Line,Fs2}; -pattern({op,_Line,'++',{nil,_},R},St) -> - pattern(R,St); -pattern({op,_Line,'++',{cons,Li,{char,_C2,_I}=Char,T},R},St) -> - pattern({cons,Li,Char,{op,Li,'++',T,R}},St); -pattern({op,_Line,'++',{cons,Li,{integer,_L2,_I}=Integer,T},R},St) -> - pattern({cons,Li,Integer,{op,Li,'++',T,R}},St); -pattern({op,_Line,'++',{string,Li,L},R},St) -> - pattern(string_to_conses(L, Li, R),St); -pattern({op,_Line,_Op,_A}=Op4,_St) -> Op4; -pattern({op,_Line,_Op,_L,_R}=Op5,_St) -> Op5. - -pattern_grp([{bin_element,L1,E1,S1,T1} | Fs],St) -> - S2 = case S1 of - default -> - default; - _ -> - expr(S1,St) - end, - T2 = case T1 of - default -> - default; - _ -> - bit_types(T1) - end, - [{bin_element,L1,expr(E1,St),S2,T2} | pattern_grp(Fs,St)]; -pattern_grp([],_St) -> - []. - -bit_types([]) -> - []; -bit_types([Atom | Rest]) when is_atom(Atom) -> - [Atom | bit_types(Rest)]; -bit_types([{Atom, Integer} | Rest]) when is_atom(Atom), is_integer(Integer) -> - [{Atom, Integer} | bit_types(Rest)]. - -pattern_list([P0|Ps],St) -> - P1 = pattern(P0,St), - [P1|pattern_list(Ps,St)]; -pattern_list([],_St) -> []. - -guard([G0|Gs],St) when is_list(G0) -> - [guard0(G0,St) | guard(Gs,St)]; -guard(L,St) -> - guard0(L,St). - -guard0([G0|Gs],St) -> - G1 = guard_test(G0,St), - [G1|guard0(Gs,St)]; -guard0([],_St) -> []. - -guard_test(Expr={call,Line,{atom,La,F},As0},St) -> - case erl_internal:type_test(F, length(As0)) of - true -> - As1 = gexpr_list(As0,St), - {call,Line,{atom,La,F},As1}; - _ -> - gexpr(Expr,St) - end; -guard_test(Any,St) -> - gexpr(Any,St). - -gexpr({var,_L,_V}=Var,_St) -> Var; -% %% alternative implementation of accessing module parameters -% case index(V,St#pmod.parameters) of -% N when N > 0 -> -% {call,L,{remote,L,{atom,L,erlang},{atom,L,element}}, -% [{integer,L,N+1},{var,L,'THIS'}]}; -% _ -> -% Var -% end; -gexpr({integer,_Line,_I}=Integer,_St) -> Integer; -gexpr({char,_Line,_C}=Char,_St) -> Char; -gexpr({float,_Line,_F}=Float,_St) -> Float; -gexpr({atom,_Line,_A}=Atom,_St) -> Atom; -gexpr({string,_Line,_S}=String,_St) -> String; -gexpr({nil,_Line}=Nil,_St) -> Nil; -gexpr({cons,Line,H0,T0},St) -> - H1 = gexpr(H0,St), - T1 = gexpr(T0,St), - {cons,Line,H1,T1}; -gexpr({tuple,Line,Es0},St) -> - Es1 = gexpr_list(Es0,St), - {tuple,Line,Es1}; -gexpr({call,Line,{atom,_La,F}=Atom,As0},St) -> - true = erl_internal:guard_bif(F, length(As0)), - As1 = gexpr_list(As0,St), - {call,Line,Atom,As1}; -%% Pre-expansion generated calls to erlang:is_record/3 must also be handled -gexpr({call,Line,{remote,La,{atom,Lb,erlang},{atom,Lc,is_record}},[_,_,_]=As0},St) -> - As1 = gexpr_list(As0,St), - {call,Line,{remote,La,{atom,Lb,erlang},{atom,Lc,is_record}},As1}; -%% Guard BIFs can be remote, but only in the module erlang... -gexpr({call,Line,{remote,La,{atom,Lb,erlang},{atom,Lc,F}},As0},St) -> - A = length(As0), - true = - erl_internal:guard_bif(F, A) orelse erl_internal:arith_op(F, A) orelse - erl_internal:comp_op(F, A) orelse erl_internal:bool_op(F, A), - As1 = gexpr_list(As0,St), - {call,Line,{remote,La,{atom,Lb,erlang},{atom,Lc,F}},As1}; -%% Unfortunately, writing calls as {M,F}(...) is also allowed. -gexpr({call,Line,{tuple,La,[{atom,Lb,erlang},{atom,Lc,F}]},As0},St) -> - A = length(As0), - true = - erl_internal:guard_bif(F, A) orelse erl_internal:arith_op(F, A) orelse - erl_internal:comp_op(F, A) orelse erl_internal:bool_op(F, A), - As1 = gexpr_list(As0,St), - {call,Line,{tuple,La,[{atom,Lb,erlang},{atom,Lc,F}]},As1}; -gexpr({bin,Line,Fs},St) -> - Fs2 = pattern_grp(Fs,St), - {bin,Line,Fs2}; -gexpr({op,Line,Op,A0},St) -> - true = erl_internal:arith_op(Op, 1) orelse erl_internal:bool_op(Op, 1), - A1 = gexpr(A0,St), - {op,Line,Op,A1}; -gexpr({op,Line,Op,L0,R0},St) -> - true = - Op =:= 'andalso' orelse Op =:= 'orelse' orelse - erl_internal:arith_op(Op, 2) orelse - erl_internal:bool_op(Op, 2) orelse erl_internal:comp_op(Op, 2), - L1 = gexpr(L0,St), - R1 = gexpr(R0,St), - {op,Line,Op,L1,R1}. - -gexpr_list([E0|Es],St) -> - E1 = gexpr(E0,St), - [E1|gexpr_list(Es,St)]; -gexpr_list([],_St) -> []. - -exprs([E0|Es],St) -> - E1 = expr(E0,St), - [E1|exprs(Es,St)]; -exprs([],_St) -> []. - -expr({var,_L,_V}=Var,_St) -> - Var; -% case index(V,St#pmod.parameters) of -% N when N > 0 -> -% {call,L,{remote,L,{atom,L,erlang},{atom,L,element}}, -% [{integer,L,N+1},{var,L,'THIS'}]}; -% _ -> -% Var -% end; -expr({integer,_Line,_I}=Integer,_St) -> Integer; -expr({float,_Line,_F}=Float,_St) -> Float; -expr({atom,_Line,_A}=Atom,_St) -> Atom; -expr({string,_Line,_S}=String,_St) -> String; -expr({char,_Line,_C}=Char,_St) -> Char; -expr({nil,_Line}=Nil,_St) -> Nil; -expr({cons,Line,H0,T0},St) -> - H1 = expr(H0,St), - T1 = expr(T0,St), - {cons,Line,H1,T1}; -expr({lc,Line,E0,Qs0},St) -> - Qs1 = lc_bc_quals(Qs0,St), - E1 = expr(E0,St), - {lc,Line,E1,Qs1}; -expr({bc,Line,E0,Qs0},St) -> - Qs1 = lc_bc_quals(Qs0,St), - E1 = expr(E0,St), - {bc,Line,E1,Qs1}; -expr({tuple,Line,Es0},St) -> - Es1 = expr_list(Es0,St), - {tuple,Line,Es1}; -expr({block,Line,Es0},St) -> - Es1 = exprs(Es0,St), - {block,Line,Es1}; -expr({'if',Line,Cs0},St) -> - Cs1 = icr_clauses(Cs0,St), - {'if',Line,Cs1}; -expr({'case',Line,E0,Cs0},St) -> - E1 = expr(E0,St), - Cs1 = icr_clauses(Cs0,St), - {'case',Line,E1,Cs1}; -expr({'receive',Line,Cs0},St) -> - Cs1 = icr_clauses(Cs0,St), - {'receive',Line,Cs1}; -expr({'receive',Line,Cs0,To0,ToEs0},St) -> - To1 = expr(To0,St), - ToEs1 = exprs(ToEs0,St), - Cs1 = icr_clauses(Cs0,St), - {'receive',Line,Cs1,To1,ToEs1}; -expr({'try',Line,Es0,Scs0,Ccs0,As0},St) -> - Es1 = exprs(Es0,St), - Scs1 = icr_clauses(Scs0,St), - Ccs1 = icr_clauses(Ccs0,St), - As1 = exprs(As0,St), - {'try',Line,Es1,Scs1,Ccs1,As1}; -expr({'fun',_,{function,_,_,_}}=ExtFun,_St) -> - ExtFun; -expr({'fun',Line,Body,Info},St) -> - case Body of - {clauses,Cs0} -> - Cs1 = fun_clauses(Cs0,St), - {'fun',Line,{clauses,Cs1},Info}; - {function,F,A} = Function -> - {F1,A1} = update_function_name({F,A},St), - if A1 =:= A -> - {'fun',Line,Function,Info}; - true -> - %% Must rewrite local fun-name to a fun that does a - %% call with the extra THIS parameter. - As = make_vars(A, Line), - As1 = As ++ [{var,Line,'THIS'}], - Call = {call,Line,{atom,Line,F1},As1}, - Cs = [{clause,Line,As,[],[Call]}], - {'fun',Line,{clauses,Cs},Info} - end; - {function,_M,_F,_A} = Fun4 -> %This is an error in lint! - {'fun',Line,Fun4,Info} - end; -expr({call,Lc,{atom,_,instance}=Name,As0},St) -> - %% All local functions 'instance(...)' are static by definition, - %% so they do not take a 'THIS' argument when called - As1 = expr_list(As0,St), - {call,Lc,Name,As1}; -expr({call,Lc,{atom,_,new}=Name,As0},St) -> - %% All local functions 'new(...)' are static by definition, - %% so they do not take a 'THIS' argument when called - As1 = expr_list(As0,St), - {call,Lc,Name,As1}; -expr({call,Lc,{atom,_,module_info}=Name,As0},St) - when length(As0) =:= 0; length(As0) =:= 1 -> - %% The module_info/0 and module_info/1 functions are also static. - As1 = expr_list(As0,St), - {call,Lc,Name,As1}; -expr({call,Lc,{atom,_Lf,_F}=Atom,As0},St) -> - %% Local function call - needs THIS parameter. - As1 = expr_list(As0,St), - {call,Lc,Atom,As1 ++ [{var,0,'THIS'}]}; -expr({call,Line,F0,As0},St) -> - %% Other function call - F1 = expr(F0,St), - As1 = expr_list(As0,St), - {call,Line,F1,As1}; -expr({'catch',Line,E0},St) -> - E1 = expr(E0,St), - {'catch',Line,E1}; -expr({match,Line,P0,E0},St) -> - E1 = expr(E0,St), - P1 = pattern(P0,St), - {match,Line,P1,E1}; -expr({bin,Line,Fs},St) -> - Fs2 = pattern_grp(Fs,St), - {bin,Line,Fs2}; -expr({op,Line,Op,A0},St) -> - A1 = expr(A0,St), - {op,Line,Op,A1}; -expr({op,Line,Op,L0,R0},St) -> - L1 = expr(L0,St), - R1 = expr(R0,St), - {op,Line,Op,L1,R1}; -%% The following are not allowed to occur anywhere! -expr({remote,Line,M0,F0},St) -> - M1 = expr(M0,St), - F1 = expr(F0,St), - {remote,Line,M1,F1}. - -expr_list([E0|Es],St) -> - E1 = expr(E0,St), - [E1|expr_list(Es,St)]; -expr_list([],_St) -> []. - -icr_clauses([C0|Cs],St) -> - C1 = clause(C0,St), - [C1|icr_clauses(Cs,St)]; -icr_clauses([],_St) -> []. - -lc_bc_quals([{generate,Line,P0,E0}|Qs],St) -> - E1 = expr(E0,St), - P1 = pattern(P0,St), - [{generate,Line,P1,E1}|lc_bc_quals(Qs,St)]; -lc_bc_quals([{b_generate,Line,P0,E0}|Qs],St) -> - E1 = expr(E0,St), - P1 = pattern(P0,St), - [{b_generate,Line,P1,E1}|lc_bc_quals(Qs,St)]; -lc_bc_quals([E0|Qs],St) -> - E1 = expr(E0,St), - [E1|lc_bc_quals(Qs,St)]; -lc_bc_quals([],_St) -> []. - -fun_clauses([C0|Cs],St) -> - C1 = clause(C0,St), - [C1|fun_clauses(Cs,St)]; -fun_clauses([],_St) -> []. - -%% %% Return index from 1 upwards, or 0 if not in the list. -%% -%% index(X,Ys) -> index(X,Ys,1). -%% -%% index(X,[X|Ys],A) -> A; -%% index(X,[Y|Ys],A) -> index(X,Ys,A+1); -%% index(X,[],A) -> 0. - -make_vars(N, L) -> - make_vars(1, N, L). - -make_vars(N, M, L) when N =< M -> - V = list_to_atom("X"++integer_to_list(N)), - [{var,L,V} | make_vars(N + 1, M, L)]; -make_vars(_, _, _) -> - []. diff --git a/lib/compiler/src/sys_pre_expand.erl b/lib/compiler/src/sys_pre_expand.erl index 97d3ff626c..7d918a55ed 100644 --- a/lib/compiler/src/sys_pre_expand.erl +++ b/lib/compiler/src/sys_pre_expand.erl @@ -28,17 +28,14 @@ %% Main entry point. -export([module/2]). --import(ordsets, [from_list/1,add_element/2,union/2]). +-import(ordsets, [from_list/1,union/2]). -import(lists, [member/2,foldl/3,foldr/3]). -include("../include/erl_bits.hrl"). -record(expand, {module=[], %Module name - parameters=undefined, %Module parameters - package="", %Module package exports=[], %Exports imports=[], %Imports - mod_imports, %Module Imports compile=[], %Compile flags attributes=[], %Attributes callbacks=[], %Callbacks @@ -67,12 +64,8 @@ module(Fs0, Opts0) -> %% Set pre-defined exported functions. PreExp = [{module_info,0},{module_info,1}], - %% Set pre-defined module imports. - PreModImp = [{erlang,erlang},{packages,packages}], - %% Build initial expand record. St0 = #expand{exports=PreExp, - mod_imports=dict:from_list(PreModImp), compile=Opts, defined=PreExp, bitdefault = erl_bits:system_bitdefault(), @@ -80,88 +73,20 @@ module(Fs0, Opts0) -> }, %% Expand the functions. {Tfs,St1} = forms(Fs, define_functions(Fs, St0)), - {Efs,St2} = expand_pmod(Tfs, St1), %% Get the correct list of exported functions. - Exports = case member(export_all, St2#expand.compile) of - true -> gb_sets:to_list(St2#expand.defined); - false -> St2#expand.exports + Exports = case member(export_all, St1#expand.compile) of + true -> gb_sets:to_list(St1#expand.defined); + false -> St1#expand.exports end, %% Generate all functions from stored info. - {Ats,St3} = module_attrs(St2#expand{exports = Exports}), + {Ats,St3} = module_attrs(St1#expand{exports = Exports}), {Mfs,St4} = module_predef_funcs(St3), - {St4#expand.module, St4#expand.exports, Ats ++ Efs ++ Mfs, + {St4#expand.module, St4#expand.exports, Ats ++ Tfs ++ Mfs, St4#expand.compile}. compiler_options(Forms) -> lists:flatten([C || {attribute,_,compile,C} <- Forms]). -expand_pmod(Fs0, St0) -> - case St0#expand.parameters of - undefined -> - {Fs0,St0}; - Ps0 -> - Base = get_base(St0#expand.attributes), - Ps = if is_atom(Base) -> - ['BASE' | Ps0]; - true -> - Ps0 - end, - Def = gb_sets:to_list(St0#expand.defined), - {Fs1,Xs,Ds} = sys_expand_pmod:forms(Fs0, Ps, - St0#expand.exports, - Def), - St1 = St0#expand{exports=Xs,defined=gb_sets:from_list(Ds)}, - {Fs2,St2} = add_instance(Ps, Fs1, St1), - {Fs3,St3} = ensure_new(Base, Ps0, Fs2, St2), - {Fs3,St3#expand{attributes = [{abstract, 0, [true]} - | St3#expand.attributes]}} - end. - -get_base(As) -> - case lists:keyfind(extends, 1, As) of - {extends,_,[Base]} when is_atom(Base) -> - Base; - _ -> - [] - end. - -ensure_new(Base, Ps, Fs, St) -> - case has_new(Fs) of - true -> - {Fs, St}; - false -> - add_new(Base, Ps, Fs, St) - end. - -has_new([{function,_L,new,_A,_Cs} | _Fs]) -> - true; -has_new([_ | Fs]) -> - has_new(Fs); -has_new([]) -> - false. - -add_new(Base, Ps, Fs, St) -> - Vs = [{var,0,V} || V <- Ps], - As = if is_atom(Base) -> - [{call,0,{remote,0,{atom,0,Base},{atom,0,new}},Vs} | Vs]; - true -> - Vs - end, - Body = [{call,0,{atom,0,instance},As}], - add_func(new, Vs, Body, Fs, St). - -add_instance(Ps, Fs, St) -> - Vs = [{var,0,V} || V <- Ps], - AbsMod = [{tuple,0,[{atom,0,St#expand.module}|Vs]}], - add_func(instance, Vs, AbsMod, Fs, St). - -add_func(Name, Args, Body, Fs, St) -> - A = length(Args), - F = {function,0,Name,A,[{clause,0,Args,[],Body}]}, - NA = {Name,A}, - {[F|Fs],St#expand{exports=add_element(NA, St#expand.exports), - defined=gb_sets:add_element(NA, St#expand.defined)}}. - %% define_function(Form, State) -> State. %% Add function to defined if form is a function. @@ -241,15 +166,9 @@ forms([], St) -> {[],St}. %% attribute(Attribute, Value, Line, State) -> State'. %% Process an attribute, this just affects the state. -attribute(module, {Module, As}, _L, St) -> - M = package_to_string(Module), - St#expand{module=list_to_atom(M), - package=packages:strip_last(M), - parameters=As}; attribute(module, Module, _L, St) -> - M = package_to_string(Module), - St#expand{module=list_to_atom(M), - package=packages:strip_last(M)}; + true = is_atom(Module), + St#expand{module=Module}; attribute(export, Es, _L, St) -> St#expand{exports=union(from_list(Es), St#expand.exports)}; attribute(import, Is, _L, St) -> @@ -312,8 +231,6 @@ pattern({tuple,Line,Ps}, St0) -> %%pattern({struct,Line,Tag,Ps}, St0) -> %% {TPs,TPsvs,St1} = pattern_list(Ps, St0), %% {{tuple,Line,[{atom,Line,Tag}|TPs]},TPsvs,St1}; -pattern({record_field,_,_,_}=M, St) -> - {expand_package(M, St),St}; % must be a package name pattern({bin,Line,Es0}, St0) -> {Es1,St1} = pattern_bin(Es0, St0), {{bin,Line,Es1},St1}; @@ -404,8 +321,6 @@ expr({tuple,Line,Es0}, St0) -> %%expr({struct,Line,Tag,Es0}, Vs, St0) -> %% {Es1,Esvs,Esus,St1} = expr_list(Es0, Vs, St0), %% {{tuple,Line,[{atom,Line,Tag}|Es1]},Esvs,Esus,St1}; -expr({record_field,_,_,_}=M, St) -> - {expand_package(M, St),St}; % must be a package name expr({bin,Line,Es0}, St0) -> {Es1,St1} = expr_bin(Es0, St0), {{bin,Line,Es1},St1}; @@ -448,15 +363,9 @@ expr({call,Line,{atom,La,N}=Atom,As0}, St0) -> end end end; -expr({call,Line,{record_field,_,_,_}=M,As0}, St0) -> - expr({call,Line,expand_package(M, St0),As0}, St0); -expr({call,Line,{remote,Lr,M,F},As0}, St0) -> - M1 = expand_package(M, St0), - {[M2,F1|As1],St1} = expr_list([M1,F|As0], St0), - {{call,Line,{remote,Lr,M2,F1},As1},St1}; -expr({call,Line,{tuple,_,[{atom,_,_}=M,{atom,_,_}=F]},As}, St) -> - %% Rewrite {Mod,Function}(Args...) to Mod:Function(Args...). - expr({call,Line,{remote,Line,M,F},As}, St); +expr({call,Line,{remote,Lr,M0,F},As0}, St0) -> + {[M1,F1|As1],St1} = expr_list([M0,F|As0], St0), + {{call,Line,{remote,Lr,M1,F1},As1},St1}; expr({call,Line,F,As0}, St0) -> {[Fun1|As1],St1} = expr_list([F|As0], St0), {{call,Line,Fun1,As1},St1}; @@ -669,32 +578,6 @@ string_to_conses(Line, Cs, Tail) -> foldr(fun (C, T) -> {cons,Line,{char,Line,C},T} end, Tail, Cs). -%% In syntax trees, module/package names are atoms or lists of atoms. - -package_to_string(A) when is_atom(A) -> atom_to_list(A); -package_to_string(L) when is_list(L) -> packages:concat(L). - -expand_package({atom,L,A} = M, St) -> - case dict:find(A, St#expand.mod_imports) of - {ok, A1} -> - {atom,L,A1}; - error -> - case packages:is_segmented(A) of - true -> - M; - false -> - M1 = packages:concat(St#expand.package, A), - {atom,L,list_to_atom(M1)} - end - end; -expand_package(M, _St) -> - case erl_parse:package_segments(M) of - error -> - M; - M1 -> - {atom,element(2,M),list_to_atom(package_to_string(M1))} - end. - %% import(Line, Imports, State) -> %% State' %% imported(Name, Arity, State) -> @@ -702,15 +585,10 @@ expand_package(M, _St) -> %% Handle import declarations and test for imported functions. No need to %% check when building imports as code is correct. -import({Mod0,Fs}, St) -> - Mod = list_to_atom(package_to_string(Mod0)), +import({Mod,Fs}, St) -> + true = is_atom(Mod), Mfs = from_list(Fs), - St#expand{imports=add_imports(Mod, Mfs, St#expand.imports)}; -import(Mod0, St) -> - Mod = package_to_string(Mod0), - Key = list_to_atom(packages:last(Mod)), - St#expand{mod_imports=dict:store(Key, list_to_atom(Mod), - St#expand.mod_imports)}. + St#expand{imports=add_imports(Mod, Mfs, St#expand.imports)}. add_imports(Mod, [F|Fs], Is) -> add_imports(Mod, Fs, orddict:store(F, Mod, Is)); diff --git a/lib/compiler/src/v3_codegen.erl b/lib/compiler/src/v3_codegen.erl index 812e85553f..6a13495523 100644 --- a/lib/compiler/src/v3_codegen.erl +++ b/lib/compiler/src/v3_codegen.erl @@ -123,15 +123,24 @@ cg_fun(Les, Hvs, Vdb, AtomMod, NameArity, Anno, St0) -> put_reg(V, Reg) end, [], Hvs), stk=[]}, 0, Vdb), - {B,_Aft,St} = cg_list(Les, 0, Vdb, Bef, + {B0,_Aft,St} = cg_list(Les, 0, Vdb, Bef, St3#cg{bfail=0, ultimate_failure=UltimateMatchFail, is_top_block=true}), + B = fix_bs_match_strings(B0), {Name,Arity} = NameArity, Asm = [{label,Fi},line(Anno),{func_info,AtomMod,{atom,Name},Arity}, {label,Fl}|B++[{label,UltimateMatchFail},if_end]], {Asm,Fl,St}. +fix_bs_match_strings([{test,bs_match_string,F,[Ctx,BinList]}|Is]) + when is_list(BinList) -> + I = {test,bs_match_string,F,[Ctx,list_to_bitstring(BinList)]}, + [I|fix_bs_match_strings(Is)]; +fix_bs_match_strings([I|Is]) -> + [I|fix_bs_match_strings(Is)]; +fix_bs_match_strings([]) -> []. + %% cg(Lkexpr, Vdb, StackReg, State) -> {[Ainstr],StackReg,State}. %% Generate code for a kexpr. %% Split function into two steps for clarity, not efficiency. @@ -714,7 +723,22 @@ select_bin_seg(#l{ke={val_clause,{bin_int,Ctx,Sz,U,Fs,Val,Es},B},i=I,vdb=Vdb}, I, Vdb, Bef, Ctx, St0), {Bis,Aft,St2} = match_cg(B, Fail, Int, St1), CtxReg = fetch_var(Ctx, Bef), - {[{bs_restore2,CtxReg,{Ctx,Ivar}}|Mis] ++ Bis,Aft,St2}. + Is = case Mis ++ Bis of + [{test,bs_match_string,F,[OtherCtx,Bin1]}, + {bs_save2,OtherCtx,_}, + {bs_restore2,OtherCtx,_}, + {test,bs_match_string,F,[OtherCtx,Bin2]}|Is0] -> + %% We used to do this optimization later, but it + %% turns out that in huge functions with many + %% bs_match_string instructions, it's a big win + %% to do the combination now. To avoid copying the + %% binary data again and again, we'll combine bitstrings + %% in a list and convert all of it to a bitstring later. + [{test,bs_match_string,F,[OtherCtx,[Bin1,Bin2]]}|Is0]; + Is0 -> + Is0 + end, + {[{bs_restore2,CtxReg,{Ctx,Ivar}}|Is],Aft,St2}. select_extract_int([{var,Tl}], Val, {integer,Sz}, U, Fs, Vf, I, Vdb, Bef, Ctx, St) -> @@ -1386,22 +1410,32 @@ catch_cg(C, {var,R}, Le, Vdb, Bef, St0) -> %% %% put_list for constructing a cons is an atomic instruction %% which can safely resuse one of the source registers as target. -%% Also binaries can reuse a source register as target. set_cg([{var,R}], {cons,Es}, Le, Vdb, Bef, St) -> - [S1,S2] = map(fun ({var,V}) -> fetch_var(V, Bef); - (Other) -> Other - end, Es), + [S1,S2] = cg_reg_args(Es, Bef), Int0 = clear_dead(Bef, Le#l.i, Vdb), Int1 = Int0#sr{reg=put_reg(R, Int0#sr.reg)}, Ret = fetch_reg(R, Int1#sr.reg), {[{put_list,S1,S2,Ret}], Int1, St}; set_cg([{var,R}], {binary,Segs}, Le, Vdb, Bef, #cg{in_catch=InCatch, bfail=Bfail}=St) -> + %% At run-time, binaries are constructed in three stages: + %% 1) First the size of the binary is calculated. + %% 2) Then the binary is allocated. + %% 3) Then each field in the binary is constructed. + %% For simplicity, we use the target register to also hold the + %% size of the binary. Therefore the target register must *not* + %% be one of the source registers. + + %% First allocate the target register. Int0 = Bef#sr{reg=put_reg(R, Bef#sr.reg)}, Target = fetch_reg(R, Int0#sr.reg), - Fail = {f,Bfail}, + + %% Also allocate a scratch register for size calculations. Temp = find_scratch_reg(Int0#sr.reg), + + %% First generate the code that constructs each field. + Fail = {f,Bfail}, PutCode = cg_bin_put(Segs, Fail, Bef), {Sis,Int1} = case InCatch of @@ -1410,6 +1444,8 @@ set_cg([{var,R}], {binary,Segs}, Le, Vdb, Bef, end, MaxRegs = max_reg(Bef#sr.reg), Aft = clear_dead(Int1, Le#l.i, Vdb), + + %% Now generate the complete code for constructing the binary. Code = cg_binary(PutCode, Target, Temp, Fail, MaxRegs, Le#l.a), {Sis++Code,Aft,St}; set_cg([{var,R}], Con, Le, Vdb, Bef, St) -> @@ -1419,10 +1455,8 @@ set_cg([{var,R}], Con, Le, Vdb, Bef, St) -> Ais = case Con of {tuple,Es} -> [{put_tuple,length(Es),Ret}] ++ cg_build_args(Es, Bef); - {var,V} -> % Normally removed by kernel optimizer. - [{move,fetch_var(V, Int),Ret}]; Other -> - [{move,Other,Ret}] + [{move,cg_reg_arg(Other, Int),Ret}] end, {Ais,clear_dead(Int, Le#l.i, Vdb),St}. @@ -1576,8 +1610,7 @@ cg_gen_binsize([], _, _, _, _, Acc) -> Acc. %% cg_bin_opt(Code0) -> Code %% Optimize the size calculations for binary construction. -cg_bin_opt([{move,Size,D},{bs_append,Fail,D,Extra,Regs0,U,Bin,Flags,D}|Is]) -> - Regs = cg_bo_newregs(Regs0, D), +cg_bin_opt([{move,Size,D},{bs_append,Fail,D,Extra,Regs,U,Bin,Flags,D}|Is]) -> cg_bin_opt([{bs_append,Fail,Size,Extra,Regs,U,Bin,Flags,D}|Is]); cg_bin_opt([{move,Size,D},{bs_private_append,Fail,D,U,Bin,Flags,D}|Is]) -> cg_bin_opt([{bs_private_append,Fail,Size,U,Bin,Flags,D}|Is]); @@ -1585,9 +1618,8 @@ cg_bin_opt([{move,{integer,0},D},{bs_add,_,[D,{integer,_}=S,1],Dst}|Is]) -> cg_bin_opt([{move,S,Dst}|Is]); cg_bin_opt([{move,{integer,0},D},{bs_add,Fail,[D,S,U],Dst}|Is]) -> cg_bin_opt([{bs_add,Fail,[{integer,0},S,U],Dst}|Is]); -cg_bin_opt([{move,{integer,Bytes},D},{Op,Fail,D,Extra,Regs0,Flags,D}|Is]) +cg_bin_opt([{move,{integer,Bytes},D},{Op,Fail,D,Extra,Regs,Flags,D}|Is]) when Op =:= bs_init2; Op =:= bs_init_bits -> - Regs = cg_bo_newregs(Regs0, D), cg_bin_opt([{Op,Fail,Bytes,Extra,Regs,Flags,D}|Is]); cg_bin_opt([{move,Src1,Dst},{bs_add,Fail,[Dst,Src2,U],Dst}|Is]) -> cg_bin_opt([{bs_add,Fail,[Src1,Src2,U],Dst}|Is]); @@ -1595,20 +1627,9 @@ cg_bin_opt([I|Is]) -> [I|cg_bin_opt(Is)]; cg_bin_opt([]) -> []. -cg_bo_newregs(R, {x,X}) when R-1 =:= X -> R-1; -cg_bo_newregs(R, _) -> R. - -%% Common for new and old binary code generation. - cg_bin_put({bin_seg,[],S0,U,T,Fs,[E0,Next]}, Fail, Bef) -> - S1 = case S0 of - {var,Sv} -> fetch_var(Sv, Bef); - _ -> S0 - end, - E1 = case E0 of - {var,V} -> fetch_var(V, Bef); - Other -> Other - end, + S1 = cg_reg_arg(S0, Bef), + E1 = cg_reg_arg(E0, Bef), {Format,Op} = case T of integer -> {plain,bs_put_integer}; utf8 -> {utf,bs_put_utf8}; @@ -1626,9 +1647,7 @@ cg_bin_put({bin_seg,[],S0,U,T,Fs,[E0,Next]}, Fail, Bef) -> cg_bin_put({bin_end,[]}, _, _) -> []. cg_build_args(As, Bef) -> - map(fun ({var,V}) -> {put,fetch_var(V, Bef)}; - (Other) -> {put,Other} - end, As). + [{put,cg_reg_arg(A, Bef)} || A <- As]. %% return_cg([Val], Le, Vdb, Bef, St) -> {[Ainstr],Aft,St}. %% break_cg([Val], Le, Vdb, Bef, St) -> {[Ainstr],Aft,St}. @@ -1907,27 +1926,13 @@ fetch_var(V, Sr) -> error -> fetch_stack(V, Sr#sr.stk) end. -% find_var(V, Sr) -> -% case find_reg(V, Sr#sr.reg) of -% {ok,R} -> {ok,R}; -% error -> -% case find_stack(V, Sr#sr.stk) of -% {ok,S} -> {ok,S}; -% error -> error -% end -% end. - load_vars(Vs, Regs) -> foldl(fun ({var,V}, Rs) -> put_reg(V, Rs) end, Regs, Vs). %% put_reg(Val, Regs) -> Regs. -%% free_reg(Val, Regs) -> Regs. %% find_reg(Val, Regs) -> ok{r{R}} | error. %% fetch_reg(Val, Regs) -> r{R}. %% Functions to interface the registers. -%% put_reg puts a value into a free register, -%% load_reg loads a value into a fixed register -%% free_reg frees a register containing a specific value. % put_regs(Vs, Rs) -> foldl(fun put_reg/2, Rs, Vs). @@ -1938,10 +1943,6 @@ put_reg_1(V, [{reserved,I,V}|Rs], I) -> [{I,V}|Rs]; put_reg_1(V, [R|Rs], I) -> [R|put_reg_1(V, Rs, I+1)]; put_reg_1(V, [], I) -> [{I,V}]. -% free_reg(V, [{I,V}|Rs]) -> [free|Rs]; -% free_reg(V, [R|Rs]) -> [R|free_reg(V, Rs)]; -% free_reg(V, []) -> []. - fetch_reg(V, [{I,V}|_]) -> {x,I}; fetch_reg(V, [_|SRs]) -> fetch_reg(V, SRs). @@ -1958,9 +1959,6 @@ find_scratch_reg([free|_], I) -> {x,I}; find_scratch_reg([_|Rs], I) -> find_scratch_reg(Rs, I+1); find_scratch_reg([], I) -> {x,I}. -%%copy_reg(Val, R, Regs) -> load_reg(Val, R, Regs). -%%move_reg(Val, R, Regs) -> load_reg(Val, R, free_reg(Val, Regs)). - replace_reg_contents(Old, New, [{I,Old}|Rs]) -> [{I,New}|Rs]; replace_reg_contents(Old, New, [R|Rs]) -> [R|replace_reg_contents(Old, New, Rs)]. diff --git a/lib/compiler/src/v3_kernel.erl b/lib/compiler/src/v3_kernel.erl index b184987625..5f1c108f7c 100644 --- a/lib/compiler/src/v3_kernel.erl +++ b/lib/compiler/src/v3_kernel.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 1999-2012. All Rights Reserved. +%% Copyright Ericsson AB 1999-2013. 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 @@ -81,7 +81,7 @@ -export([module/2,format_error/1]). -import(lists, [map/2,foldl/3,foldr/3,mapfoldl/3,splitwith/2,member/2, - keymember/3,keyfind/3]). + keymember/3,keyfind/3,partition/2]). -import(ordsets, [add_element/2,del_element/2,union/2,union/1,subtract/2]). -import(cerl, [c_tuple/1]). @@ -1081,9 +1081,44 @@ select_bin_con(Cs0) -> end, Cs0), select_bin_con_1(Cs1). + select_bin_con_1(Cs) -> try - select_bin_int(Cs) + %% The usual way to match literals is to first extract the + %% value to a register, and then compare the register to the + %% literal value. Extracting the value is good if we need + %% compare it more than once. + %% + %% But we would like to combine the extracting and the + %% comparing into a single instruction if we know that + %% a binary segment must contain specific integer value + %% or the matching will fail, like in this example: + %% + %% <<42:8,...>> -> + %% <<42:8,...>> -> + %% . + %% . + %% . + %% <<42:8,...>> -> + %% <<>> -> + %% + %% The first segment must either contain the integer 42 + %% or the binary must end for the match to succeed. + %% + %% The way we do is to replace the generic #k_bin_seg{} + %% record with a #k_bin_int{} record if all clauses will + %% select the same literal integer (except for one or more + %% clauses that will end the binary). + + {BinSegs0,BinEnd} = + partition(fun (C) -> + clause_con(C) =:= k_bin_seg + end, Cs), + BinSegs = select_bin_int(BinSegs0), + case BinEnd of + [] -> BinSegs; + [_|_] -> BinSegs ++ [{k_bin_end,BinEnd}] + end catch throw:not_possible -> select_bin_con_2(Cs) @@ -1097,7 +1132,7 @@ select_bin_con_2([]) -> []. %% select_bin_int([Clause]) -> {k_bin_int,[Clause]} %% If the first pattern in each clause selects the same integer, -%% rewrite all clauses to use #k_bin_int{} (which will later to +%% rewrite all clauses to use #k_bin_int{} (which will later be %% translated to a bs_match_string/4 instruction). %% %% If it is not possible to do this rewrite, a 'not_possible' @@ -1346,7 +1381,7 @@ clause_arg(#iclause{pats=[Arg|_]}) -> Arg. clause_con(C) -> arg_con(clause_arg(C)). -clause_val(C) -> arg_val(clause_arg(C)). +clause_val(C) -> arg_val(clause_arg(C), C). is_var_clause(C) -> clause_con(C) =:= k_var. @@ -1377,7 +1412,7 @@ arg_con(Arg) -> #k_var{} -> k_var end. -arg_val(Arg) -> +arg_val(Arg, C) -> case arg_arg(Arg) of #k_literal{val=Lit} -> Lit; #k_int{val=I} -> I; @@ -1385,7 +1420,13 @@ arg_val(Arg) -> #k_atom{val=A} -> A; #k_tuple{es=Es} -> length(Es); #k_bin_seg{size=S,unit=U,type=T,flags=Fs} -> - {set_kanno(S, []),U,T,Fs} + case S of + #k_var{name=V} -> + #iclause{isub=Isub} = C, + {#k_var{name=get_vsub(V, Isub)},U,T,Fs}; + _ -> + {set_kanno(S, []),U,T,Fs} + end end. %% ubody_used_vars(Expr, State) -> [UsedVar] |