diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/compiler/src/beam_block.erl | 9 | ||||
| -rw-r--r-- | lib/compiler/src/v3_codegen.erl | 42 |
2 files changed, 24 insertions, 27 deletions
diff --git a/lib/compiler/src/beam_block.erl b/lib/compiler/src/beam_block.erl index 5216f39296..e2639e9cac 100644 --- a/lib/compiler/src/beam_block.erl +++ b/lib/compiler/src/beam_block.erl @@ -61,15 +61,6 @@ blockify(Is) -> blockify([{loop_rec,{f,Fail},{x,0}},{loop_rec_end,_Lbl},{label,Fail}|Is], Acc) -> %% Useless instruction sequence. blockify(Is, Acc); - -%% New bit syntax matching. -blockify([{bs_save2,R,Point}=I,{bs_restore2,R,Point}|Is], Acc) -> - blockify([I|Is], Acc); -blockify([{bs_save2,R,Point}=I,{test,is_eq_exact,_,_}=Test, - {bs_restore2,R,Point}|Is], Acc) -> - blockify([I,Test|Is], Acc); - -%% Do other peep-hole optimizations. blockify([{test,is_atom,{f,Fail},[Reg]}=I| [{select,select_val,Reg,{f,Fail}, [{atom,false},{f,_}=BrFalse, diff --git a/lib/compiler/src/v3_codegen.erl b/lib/compiler/src/v3_codegen.erl index eb7926d3ab..15a54a5886 100644 --- a/lib/compiler/src/v3_codegen.erl +++ b/lib/compiler/src/v3_codegen.erl @@ -121,24 +121,15 @@ cg_fun(Les, Hvs, Vdb, AtomMod, NameArity, Anno, St0) -> put_reg(V, Reg) end, [], Hvs), stk=[]}, 0, Vdb), - {B0,_Aft,St} = cg_list(Les, 0, Vdb, Bef, + {B,_Aft,St} = cg_list(Les, 0, Vdb, Bef, St3#cg{bfail=0, ultimate_failure=UltimateMatchFail, is_top_block=true}), - B = fix_bs_match_strings(B0), {Name,Arity} = NameArity, Asm = [{label,Fi},line(Anno),{func_info,AtomMod,{atom,Name},Arity}, {label,Fl}|B++[{label,UltimateMatchFail},if_end]], {Asm,Fl,St}. -fix_bs_match_strings([{test,bs_match_string,F,[Ctx,BinList]}|Is]) - when is_list(BinList) -> - I = {test,bs_match_string,F,[Ctx,list_to_bitstring(BinList)]}, - [I|fix_bs_match_strings(Is)]; -fix_bs_match_strings([I|Is]) -> - [I|fix_bs_match_strings(Is)]; -fix_bs_match_strings([]) -> []. - %% cg(Lkexpr, Vdb, StackReg, State) -> {[Ainstr],StackReg,State}. %% Generate code for a kexpr. %% Split function into two steps for clarity, not efficiency. @@ -717,22 +708,37 @@ select_nil(#l{ke={val_clause,nil,B}}, V, Tf, Vf, Bef, St0) -> select_binary(#l{ke={val_clause,{binary,{var,V}},B},i=I,vdb=Vdb}, V, Tf, Vf, Bef, St0) -> Int0 = clear_dead(Bef#sr{reg=Bef#sr.reg}, I, Vdb), - {Bis,Aft,St1} = match_cg(B, Vf, Int0, St0), + {Bis0,Aft,St1} = match_cg(B, Vf, Int0, St0), CtxReg = fetch_var(V, Int0), Live = max_reg(Bef#sr.reg), - {[{test,bs_start_match2,{f,Tf},Live,[CtxReg,V],CtxReg}, - {bs_save2,CtxReg,{V,V}}|Bis], - Aft,St1}; + Bis1 = [{test,bs_start_match2,{f,Tf},Live,[CtxReg,V],CtxReg}, + {bs_save2,CtxReg,{V,V}}|Bis0], + Bis = finish_select_binary(Bis1), + {Bis,Aft,St1}; select_binary(#l{ke={val_clause,{binary,{var,Ivar}},B},i=I,vdb=Vdb}, V, Tf, Vf, Bef, St0) -> Regs = put_reg(Ivar, Bef#sr.reg), Int0 = clear_dead(Bef#sr{reg=Regs}, I, Vdb), - {Bis,Aft,St1} = match_cg(B, Vf, Int0, St0), + {Bis0,Aft,St1} = match_cg(B, Vf, Int0, St0), CtxReg = fetch_var(Ivar, Int0), Live = max_reg(Bef#sr.reg), - {[{test,bs_start_match2,{f,Tf},Live,[fetch_var(V, Bef),Ivar],CtxReg}, - {bs_save2,CtxReg,{Ivar,Ivar}}|Bis], - Aft,St1}. + Bis1 = [{test,bs_start_match2,{f,Tf},Live,[fetch_var(V, Bef),Ivar],CtxReg}, + {bs_save2,CtxReg,{Ivar,Ivar}}|Bis0], + Bis = finish_select_binary(Bis1), + {Bis,Aft,St1}. + +finish_select_binary([{bs_save2,R,Point}=I,{bs_restore2,R,Point}|Is]) -> + [I|finish_select_binary(Is)]; +finish_select_binary([{bs_save2,R,Point}=I,{test,is_eq_exact,_,_}=Test, + {bs_restore2,R,Point}|Is]) -> + [I,Test|finish_select_binary(Is)]; +finish_select_binary([{test,bs_match_string,F,[Ctx,BinList]}|Is]) + when is_list(BinList) -> + I = {test,bs_match_string,F,[Ctx,list_to_bitstring(BinList)]}, + [I|finish_select_binary(Is)]; +finish_select_binary([I|Is]) -> + [I|finish_select_binary(Is)]; +finish_select_binary([]) -> []. %% New instructions for selection of binary segments. |