diff options
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'). |