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don't put erase or query for non-allocainst pointers in an set of allocainsts*'s

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llvm-svn: 43779
This commit is contained in:
Chris Lattner 2007-11-06 22:07:22 +00:00
parent 907b9b92fe
commit 2a909d32b6
1 changed files with 6 additions and 3 deletions
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9
lib/Transforms/Scalar/DeadStoreElimination.cpp
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@ -271,7 +271,8 @@ bool DSE::handleEndBlock(BasicBlock& BB,
// See through pointer-to-pointer bitcasts
TranslatePointerBitCasts(pointerOperand);
if (deadPointers.count(pointerOperand)){
if (isa<AllocaInst>(pointerOperand) &&
deadPointers.count(cast<AllocaInst>(pointerOperand))) {
// Remove it!
MD.removeInstruction(S);
@ -345,7 +346,8 @@ bool DSE::handleEndBlock(BasicBlock& BB,
for (std::vector<Instruction*>::iterator I = dead.begin(), E = dead.end();
I != E; ++I)
deadPointers.erase(*I);
if (AllocaInst *AI = dyn_cast<AllocaInst>(*I))
deadPointers.erase(AI);
continue;
}
@ -427,7 +429,8 @@ bool DSE::RemoveUndeadPointers(Value* killPointer,
for (std::vector<Instruction*>::iterator I = undead.begin(), E = undead.end();
I != E; ++I)
deadPointers.erase(*I);
if (AllocaInst *AI = dyn_cast<AllocaInst>(*I))
deadPointers.erase(AI);
return MadeChange;
}