4e8137d678
Rename ValueRequiresCast to ShouldOptimizeCast, to better reflect
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what it does. Enhance it to return false to optimizing vector
sign extensions from vector comparisions, which is the idiom used
to get a splatted vector for a vector comparison.
Doing this breaks vector-casts.ll, add some compensating
transformations to handle the important case they cover without
depending on this canonicalization.
This fixes rdar://7434900 a serious pessimization of vector compares.
llvm-svn: 95855
2010-02-11 06:26:33 +00:00
883550afe8
inline and remove the rest of commonIntCastTransforms.
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llvm-svn: 93091
2010-01-10 01:00:46 +00:00
554d0564ff
make this a static function instead of a method.
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llvm-svn: 92795
2010-01-05 22:30:42 +00:00
dc054bf39a
split mul/div/rem instructions out to their own file.
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llvm-svn: 92689
2010-01-05 06:09:35 +00:00
27acfcd1c4
convert various IntrinsicInst's to use class instead of struct.
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llvm-svn: 92681
2010-01-05 05:21:26 +00:00
72a87448c1
Fix some struct/class specifier mismatches.
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llvm-svn: 92550
2010-01-05 00:15:58 +00:00
2b295a0eba
split 943 lines of instcombine out to a new InstCombineCasts.cpp
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file. InstructionCombining.cpp is now down to a svelte 9300 lines :)
llvm-svn: 92468
2010-01-04 07:53:58 +00:00
2188e40e4c
split instcombine of compares (visit[FI]Cmp) out to
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a new InstCombineCompares.cpp file.
llvm-svn: 92467
2010-01-04 07:37:31 +00:00
7e0449172c
move the 'SimplifyDemandedFoo' methods out to their own file, cutting 1K lines out of instcombine.cpp
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llvm-svn: 92465
2010-01-04 07:17:19 +00:00
35522b7465
split the instcombine class definition out to a header shared
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among the instcombine library.
llvm-svn: 92463
2010-01-04 07:12:23 +00:00
Chris Lattner