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| author | Björn Gustavsson <[email protected]> | 2012-08-31 19:14:10 +0200 |
|---|---|---|
| committer | Björn Gustavsson <[email protected]> | 2012-10-09 15:24:41 +0200 |
| commit | ed7ab81375d599c73cbe0d2195102187957c25d6 (patch) | |
| tree | f2e4114919a1e79be55f6171997febf33c0b9f27 /lib/compiler/src/beam_z.erl | |
| parent | b44f86b779f0b8579e4df2a98930ac3150c6c07c (diff) | |
| download | otp-ed7ab81375d599c73cbe0d2195102187957c25d6.tar.gz otp-ed7ab81375d599c73cbe0d2195102187957c25d6.tar.bz2 otp-ed7ab81375d599c73cbe0d2195102187957c25d6.zip | |
Rewrite bs_add, bs_utf*_size to BIF instructions in optimizations
We can remove some code bloat by handling the special instructions
as BIF instructions in the optimization passes. Also note that
bs_utf*_size was not handled by beam_utils:check_liveness/3
(meaning the conservative answer instead of the correct answer
would be returned).
Diffstat (limited to 'lib/compiler/src/beam_z.erl')
| -rw-r--r-- | lib/compiler/src/beam_z.erl | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/lib/compiler/src/beam_z.erl b/lib/compiler/src/beam_z.erl index 7da6391f1f..7af6f1a74c 100644 --- a/lib/compiler/src/beam_z.erl +++ b/lib/compiler/src/beam_z.erl @@ -44,4 +44,10 @@ 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(I) -> I. |