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Fix insert point handling for multiple return values.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49367 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Devang Patel 2008-04-08 02:24:08 +00:00
parent f2247cfb38
commit 34437f35e9
1 changed files with 12 additions and 4 deletions
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16
lib/Transforms/Utils/UnifyFunctionExitNodes.cpp
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@ -117,13 +117,21 @@ bool UnifyFunctionExitNodes::runOnFunction(Function &F) {
if (NumRetVals == 0)
ReturnInst::Create(NULL, NewRetBlock);
else if (const StructType *STy = dyn_cast<StructType>(F.getReturnType())) {
Instruction *InsertPt = NewRetBlock->getFirstNonPHI();
Instruction *InsertPt = NULL;
if (NumRetVals == 0)
InsertPt = NewRetBlock->getFirstNonPHI();
PHINode *PN = NULL;
for (unsigned i = 0; i < NumRetVals; ++i) {
PHINode *PN = PHINode::Create(STy->getElementType(i), "UnifiedRetVal."
+ utostr(i), InsertPt);
if (InsertPt)
PN = PHINode::Create(STy->getElementType(i), "UnifiedRetVal."
+ utostr(i), InsertPt);
else
PN = PHINode::Create(STy->getElementType(i), "UnifiedRetVal."
+ utostr(i), NewRetBlock);
Phis.push_back(PN);
InsertPt = PN;
}
ReturnInst::Create(&Phis[0], NumRetVals);
ReturnInst::Create(&Phis[0], NumRetVals, NewRetBlock);
}
else {
// If the function doesn't return void... add a PHI node to the block...