Summary:
Remove invalid usage of VectorType::getNumElements in
ShuffleVectorInst::isValidOperands identified by test case
llvm::Analysis/ConstantFolding/vscale-shufflevector.ll. The tested
conditions hold for both fixed width and scalable vectors; use
getElementCount().
Reviewers: efriedma, sdesmalen, c-rhodes, spatel
Reviewed By: sdesmalen
Subscribers: tschuett, hiraditya, rkruppe, psnobl, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D79212
bool ShuffleVectorInst::isValidOperands(const Value *V1, const Value *V2,
ArrayRef<int> Mask) {
// V1 and V2 must be vectors of the same type.
- if (!V1->getType()->isVectorTy() || V1->getType() != V2->getType())
+ if (!isa<VectorType>(V1->getType()) || V1->getType() != V2->getType())
return false;
// Make sure the mask elements make sense.
- int V1Size = cast<VectorType>(V1->getType())->getNumElements();
+ int V1Size = cast<VectorType>(V1->getType())->getElementCount().Min;
for (int Elem : Mask)
if (Elem != UndefMaskElem && Elem >= V1Size * 2)
return false;