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[InstCombine] Use a 32-bits instead of 64-bits for storing the number of elements in VectorType for a ShuffleVector. While there getVectorNumElements to avoid an explicit cast. NFC 

llvm-svn: 290705
This commit is contained in:
Craig Topper 2016-12-29 04:24:32 +00:00
parent 1a8a3377cc
commit 2e18bcfc60
1 changed files with 2 additions and 2 deletions
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4
llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp
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@ -1021,8 +1021,8 @@ Value *InstCombiner::SimplifyDemandedVectorElts(Value *V, APInt DemandedElts,
}
case Instruction::ShuffleVector: {
ShuffleVectorInst *Shuffle = cast<ShuffleVectorInst>(I);
uint64_t LHSVWidth =
cast<VectorType>(Shuffle->getOperand(0)->getType())->getNumElements();
unsigned LHSVWidth =
Shuffle->getOperand(0)->getType()->getVectorNumElements();
APInt LeftDemanded(LHSVWidth, 0), RightDemanded(LHSVWidth, 0);
for (unsigned i = 0; i < VWidth; i++) {
if (DemandedElts[i]) {