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Minor simplification: use ShuffleVectorInst::getMaskValue instead of a more expensive helper. 

llvm-svn: 142672
This commit is contained in:
Eli Friedman 2011-10-21 19:11:34 +00:00
parent ce818277fc
commit 303c81c773
1 changed files with 2 additions and 2 deletions
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4
llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp
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@ -108,7 +108,7 @@ static Value *FindScalarElement(Value *V, unsigned EltNo) {
if (ShuffleVectorInst *SVI = dyn_cast<ShuffleVectorInst>(V)) {
unsigned LHSWidth =
cast<VectorType>(SVI->getOperand(0)->getType())->getNumElements();
int InEl = getShuffleMask(SVI)[EltNo];
int InEl = SVI->getMaskValue(EltNo);
if (InEl < 0)
return UndefValue::get(PTy->getElementType());
if (InEl < (int)LHSWidth)
@ -212,7 +212,7 @@ Instruction *InstCombiner::visitExtractElementInst(ExtractElementInst &EI) {
// If this is extracting an element from a shufflevector, figure out where
// it came from and extract from the appropriate input element instead.
if (ConstantInt *Elt = dyn_cast<ConstantInt>(EI.getOperand(1))) {
int SrcIdx = getShuffleMask(SVI)[Elt->getZExtValue()];
int SrcIdx = SVI->getMaskValue(Elt->getZExtValue());
Value *Src;
unsigned LHSWidth =
cast<VectorType>(SVI->getOperand(0)->getType())->getNumElements();