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Check void type before using RAUWd.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84049 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Devang Patel
2009-10-13 22:56:32 +00:00
parent e72142aa5b
commit 228ebd0f4c
3 changed files with 27 additions and 7 deletions
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19
lib/Transforms/Scalar/InstructionCombining.cpp
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@@ -9979,7 +9979,10 @@ Instruction *InstCombiner::visitCallSite(CallSite CS) {
new StoreInst(ConstantInt::getTrue(*Context),
UndefValue::get(Type::getInt1PtrTy(*Context)),
OldCall);
OldCall->replaceAllUsesWith(UndefValue::get(OldCall->getType()));
// If OldCall dues not return void then replaceAllUsesWith undef.
// This allows ValueHandlers and custom metadata to adjust itself.
if (OldCall->getType() != Type::getVoidTy(*Context))
OldCall->replaceAllUsesWith(UndefValue::get(OldCall->getType()));
if (isa<CallInst>(OldCall)) // Not worth removing an invoke here.
return EraseInstFromFunction(*OldCall);
return 0;
@@ -9993,8 +9996,11 @@ Instruction *InstCombiner::visitCallSite(CallSite CS) {
UndefValue::get(Type::getInt1PtrTy(*Context)),
CS.getInstruction());
CS.getInstruction()->
replaceAllUsesWith(UndefValue::get(CS.getInstruction()->getType()));
// If CS dues not return void then replaceAllUsesWith undef.
// This allows ValueHandlers and custom metadata to adjust itself.
if (CS.getInstruction()->getType() != Type::getVoidTy(*Context))
CS.getInstruction()->
replaceAllUsesWith(UndefValue::get(CS.getInstruction()->getType()));
if (InvokeInst *II = dyn_cast<InvokeInst>(CS.getInstruction())) {
// Don't break the CFG, insert a dummy cond branch.
@@ -12779,7 +12785,12 @@ bool InstCombiner::DoOneIteration(Function &F, unsigned Iteration) {
++NumDeadInst;
MadeIRChange = true;
}
I->replaceAllUsesWith(UndefValue::get(I->getType()));
// If I is not void type then replaceAllUsesWith undef.
// This allows ValueHandlers and custom metadata to adjust itself.
if (I->getType() != Type::getVoidTy(*Context))
I->replaceAllUsesWith(UndefValue::get(I->getType()));
I->eraseFromParent();
}
}