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Fix for 2006-06-27-DeadSwitchCase.ll

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Be more careful when updating Phi nodes after eliminating dead switch cases.  Fix
proposed by Chris.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28947 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Owen Anderson 2006-06-27 22:26:09 +00:00
parent 2f62a9eb2e
commit bef8508737
1 changed files with 6 additions and 5 deletions
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11
lib/Transforms/Scalar/LoopUnswitch.cpp
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@ -971,11 +971,12 @@ void LoopUnswitch::RewriteLoopBodyWithConditionConstant(Loop *L, Value *LIC,
Old->getTerminator()->eraseFromParent();
for (BasicBlock::iterator II = SI->getSuccessor(i)->begin(),
IE = SI->getSuccessor(i)->end(); II != IE; ++II) {
if (isa<PHINode>(*II)) {
(*II).replaceUsesOfWith(Split, Old);
}
PHINode *PN;
for (BasicBlock::iterator II = SI->getSuccessor(i)->begin();
(PN = dyn_cast<PHINode>(II)); ++II) {
Value *InVal = PN->removeIncomingValue(Split, false);
PN->addIncoming(InVal, Old);
}
SI->removeCase(i);