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| author | Dan Gohman <gohman@apple.com> | 2008-09-11 22:47:57 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2008-09-11 22:47:57 +0000 |
| commit | 3139ff8f7b5e3eeb170d77ac8472fc4ca596ec0e (patch) | |
| tree | 29814e01093bbe0023b84a39d959af82c6c50a6b /lib/Transforms | |
| parent | 363f53f3ec711f603c9ba4a56a750795cd3f71aa (diff) | |
| download | llvm-3139ff8f7b5e3eeb170d77ac8472fc4ca596ec0e.tar.gz llvm-3139ff8f7b5e3eeb170d77ac8472fc4ca596ec0e.tar.bz2 llvm-3139ff8f7b5e3eeb170d77ac8472fc4ca596ec0e.tar.xz | |
Fix a vectorshuffle instcombine bug introduced by r55995.
Patch by Nicolas Capens!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56129 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Transforms')
| -rw-r--r-- | lib/Transforms/Scalar/InstructionCombining.cpp | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/lib/Transforms/Scalar/InstructionCombining.cpp b/lib/Transforms/Scalar/InstructionCombining.cpp index 5a9d1de2e3..f02a7108fd 100644 --- a/lib/Transforms/Scalar/InstructionCombining.cpp +++ b/lib/Transforms/Scalar/InstructionCombining.cpp @@ -11311,8 +11311,11 @@ Instruction *InstCombiner::visitShuffleVectorInst(ShuffleVectorInst &SVI) { unsigned VWidth = cast<VectorType>(SVI.getType())->getNumElements(); uint64_t AllOnesEltMask = ~0ULL >> (64-VWidth); if (VWidth <= 64 && - SimplifyDemandedVectorElts(&SVI, AllOnesEltMask, UndefElts)) + SimplifyDemandedVectorElts(&SVI, AllOnesEltMask, UndefElts)) { + LHS = SVI.getOperand(0); + RHS = SVI.getOperand(1); MadeChange = true; + } // Canonicalize shuffle(x ,x,mask) -> shuffle(x, undef,mask') // Canonicalize shuffle(undef,x,mask) -> shuffle(x, undef,mask'). |