forked from OSchip/llvm-project
parent
ec97a90221
commit
841af4f03d
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@ -86,11 +86,12 @@ static Value *FindScalarElement(Value *V, unsigned EltNo) {
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if (isa<UndefValue>(V))
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return UndefValue::get(PTy->getElementType());
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else if (isa<ConstantAggregateZero>(V))
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if (isa<ConstantAggregateZero>(V))
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return Constant::getNullValue(PTy->getElementType());
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else if (ConstantVector *CP = dyn_cast<ConstantVector>(V))
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if (ConstantVector *CP = dyn_cast<ConstantVector>(V))
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return CP->getOperand(EltNo);
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else if (InsertElementInst *III = dyn_cast<InsertElementInst>(V)) {
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if (InsertElementInst *III = dyn_cast<InsertElementInst>(V)) {
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// If this is an insert to a variable element, we don't know what it is.
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if (!isa<ConstantInt>(III->getOperand(2)))
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return 0;
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@ -104,7 +105,9 @@ static Value *FindScalarElement(Value *V, unsigned EltNo) {
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// Otherwise, the insertelement doesn't modify the value, recurse on its
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// vector input.
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return FindScalarElement(III->getOperand(0), EltNo);
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} else if (ShuffleVectorInst *SVI = dyn_cast<ShuffleVectorInst>(V)) {
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}
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if (ShuffleVectorInst *SVI = dyn_cast<ShuffleVectorInst>(V)) {
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unsigned LHSWidth =
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cast<VectorType>(SVI->getOperand(0)->getType())->getNumElements();
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unsigned InEl = getShuffleMask(SVI)[EltNo];
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