diff options
Diffstat (limited to 'lib/compiler/src/v3_codegen.erl')
| -rw-r--r-- | lib/compiler/src/v3_codegen.erl | 47 |
1 files changed, 33 insertions, 14 deletions
diff --git a/lib/compiler/src/v3_codegen.erl b/lib/compiler/src/v3_codegen.erl index 47c1567f10..8628df1197 100644 --- a/lib/compiler/src/v3_codegen.erl +++ b/lib/compiler/src/v3_codegen.erl @@ -1811,22 +1811,41 @@ 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,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]); -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,Regs,Flags,D}|Is]) +cg_bin_opt([{move,S1,{x,X}=D},{gc_bif,Op,Fail,Live0,As,Dst}|Is]) -> + Live = if + X + 1 =:= Live0 -> X; + true -> Live0 + end, + [{gc_bif,Op,Fail,Live,As,D}|cg_bin_opt([{move,S1,Dst}|Is])]; +cg_bin_opt([{move,_,_}=I1,{Op,_,_,_}=I2|Is]) + when Op =:= bs_utf8_size orelse Op =:= bs_utf16_size -> + [I2|cg_bin_opt([I1|Is])]; +cg_bin_opt([{bs_add,_,[{integer,0},Src,1],Dst}|Is]) -> + cg_bin_opt_1([{move,Src,Dst}|Is]); +cg_bin_opt([{bs_add,_,[Src,{integer,0},_],Dst}|Is]) -> + cg_bin_opt_1([{move,Src,Dst}|Is]); +cg_bin_opt(Is) -> + cg_bin_opt_1(Is). + +cg_bin_opt_1([{move,Size,D},{bs_append,Fail,D,Extra,Regs,U,Bin,Flags,D}|Is]) -> + [{bs_append,Fail,Size,Extra,Regs,U,Bin,Flags,D}|cg_bin_opt(Is)]; +cg_bin_opt_1([{move,Size,D},{bs_private_append,Fail,D,U,Bin,Flags,D}|Is]) -> + [{bs_private_append,Fail,Size,U,Bin,Flags,D}|cg_bin_opt(Is)]; +cg_bin_opt_1([{move,Size,D},{Op,Fail,D,Extra,Regs,Flags,D}|Is]) when Op =:= bs_init2; Op =:= bs_init_bits -> - 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]); -cg_bin_opt([I|Is]) -> + Bytes = case Size of + {integer,Int} -> Int; + _ -> Size + end, + [{Op,Fail,Bytes,Extra,Regs,Flags,D}|cg_bin_opt(Is)]; +cg_bin_opt_1([{move,S1,D},{bs_add,Fail,[D,S2,U],Dst}|Is]) -> + cg_bin_opt([{bs_add,Fail,[S1,S2,U],Dst}|Is]); +cg_bin_opt_1([{move,S1,D},{bs_add,Fail,[S2,D,U],Dst}|Is]) -> + cg_bin_opt([{bs_add,Fail,[S2,S1,U],Dst}|Is]); +cg_bin_opt_1([I|Is]) -> [I|cg_bin_opt(Is)]; -cg_bin_opt([]) -> []. +cg_bin_opt_1([]) -> + []. cg_bin_put({bin_seg,[],S0,U,T,Fs,[E0,Next]}, Fail, Bef) -> S1 = cg_reg_arg(S0, Bef), |