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InstSimplify: Don't try to replace an extractvalue/insertvalue pair with the original value if types don't match.

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Fixes clang selfhost.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139120 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Benjamin Kramer
2011-09-05 18:16:19 +00:00
parent ad99ef8bf5
commit ae707bd559
2 changed files with 13 additions and 5 deletions
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3
lib/Analysis/InstructionSimplify.cpp
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@ -2286,7 +2286,8 @@ Value *llvm::SimplifyInsertValueInst(Value *Agg, Value *Val,
// insertvalue x, (extractvalue y, n), n
if (ExtractValueInst *EV = dyn_cast<ExtractValueInst>(Val))
if (EV->getIndices() == Idxs) {
if (EV->getAggregateOperand()->getType() == Agg->getType() &&
EV->getIndices() == Idxs) {
// insertvalue undef, (extractvalue y, n), n -> y
if (match(Agg, m_Undef()))
return EV->getAggregateOperand();