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author | Björn Gustavsson <[email protected]> | 2012-08-31 16:06:37 +0200 |
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committer | Björn Gustavsson <[email protected]> | 2012-10-09 15:24:41 +0200 |
commit | b44f86b779f0b8579e4df2a98930ac3150c6c07c (patch) | |
tree | ba10bf906e4432f12a9a7aa6d6ee1af7735dfacf /lib/compiler/src/beam_utils.erl | |
parent | 105e056cddaf765952d58813e2ec5c9bdfd4403c (diff) | |
download | otp-b44f86b779f0b8579e4df2a98930ac3150c6c07c.tar.gz otp-b44f86b779f0b8579e4df2a98930ac3150c6c07c.tar.bz2 otp-b44f86b779f0b8579e4df2a98930ac3150c6c07c.zip |
Rewrite bs_put* instructions to a generic bs_put instruction
Seven bs_put_* instructions can be combined into one generic bs_put
instruction to avoid some code bloat. That will also improve some
optimizations (such as beam_trim) that did not handle all bs_put*
variants.
Diffstat (limited to 'lib/compiler/src/beam_utils.erl')
-rw-r--r-- | lib/compiler/src/beam_utils.erl | 42 |
1 files changed, 4 insertions, 38 deletions
diff --git a/lib/compiler/src/beam_utils.erl b/lib/compiler/src/beam_utils.erl index 7e4a476dab..400979bc19 100644 --- a/lib/compiler/src/beam_utils.erl +++ b/lib/compiler/src/beam_utils.erl @@ -330,8 +330,6 @@ check_liveness(R, [{bs_init_bits,_,_,_,_,_,Dst}|Is], St) -> R =:= Dst -> {killed,St}; true -> check_liveness(R, Is, St) 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}; @@ -435,18 +433,8 @@ check_liveness(R, [{bs_add,{f,0},Ss,D}|Is], 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 +check_liveness(R, [{bs_put,{f,0},_,Ss}|Is], St) -> + case member(R, Ss) of true -> {used,St}; false -> check_liveness(R, Is, St) end; @@ -721,28 +709,8 @@ 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), - 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(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) -> @@ -847,8 +815,6 @@ 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) -> |