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Don't try to create PHIs of struct types. Fallout

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from x86-64 calling convention work.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50545 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dale Johannesen 2008-05-01 22:27:44 +00:00
parent e85b7585e9
commit 796026711d
1 changed files with 31 additions and 8 deletions
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39
lib/Transforms/Scalar/LoopRotation.cpp
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@ -249,14 +249,37 @@ bool LoopRotate::rotateLoop(Loop *Lp, LPPassManager &LPM) {
// create new PHINode for this instruction.
Instruction *NewHeaderReplacement = NULL;
if (usedOutsideOriginalHeader(In)) {
PHINode *PN = PHINode::Create(In->getType(), In->getName());
PN->addIncoming(In, OrigHeader);
PN->addIncoming(C, OrigPreHeader);
NewHeader->getInstList().push_front(PN);
NewHeaderReplacement = PN;
}
// "In" can be replaced by NPH or NH at various places.
const StructType *STy = dyn_cast<StructType>(In->getType());
if (STy) {
// Can't create PHI nodes for this type. If there are any getResults
// not defined in this block, move them back to this block. PHI
// nodes will be created for all getResults later.
BasicBlock::iterator InsertPoint;
if (InvokeInst *II = dyn_cast<InvokeInst>(In)) {
InsertPoint = II->getNormalDest()->begin();
while (isa<PHINode>(InsertPoint))
++InsertPoint;
} else {
InsertPoint = I; // call
InsertPoint++;
}
for (Value::use_iterator UI = In->use_begin(), UE = In->use_end();
UI != UE; ++UI) {
GetResultInst *InGR = cast<GetResultInst>(UI);
if (InGR->getParent() != OrigHeader) {
// move InGR to immediately follow call. It will be picked
// up, cloned and PHI'd on the next iteration.
InGR->moveBefore(InsertPoint);
}
}
} else {
PHINode *PN = PHINode::Create(In->getType(), In->getName());
PN->addIncoming(In, OrigHeader);
PN->addIncoming(C, OrigPreHeader);
NewHeader->getInstList().push_front(PN);
NewHeaderReplacement = PN;
}
}
LoopHeaderInfo.push_back(RenameData(In, C, NewHeaderReplacement));
}