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ConstantFold - silence static analyzer dyn_cast<> null dereference warning. NFCI.

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Early out if the vector element is not Constant.

llvm-svn: 372743
This commit is contained in:
Simon Pilgrim 2019-09-24 12:30:13 +00:00
parent 73c44eede5
commit 38c6f227ec
1 changed files with 1 additions and 0 deletions
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lib/IR/ConstantFold.cpp
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@ -747,6 +747,7 @@ Constant *llvm::ConstantFoldSelectInstruction(Constant *Cond,
Constant *V2Element = ConstantExpr::getExtractElement(V2,
ConstantInt::get(Ty, i));
Constant *Cond = dyn_cast<Constant>(CondV->getOperand(i));
if (!Cond) break;
if (V1Element == V2Element) {
V = V1Element;
} else if (isa<UndefValue>(Cond)) {