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When asked not to delete useless PHIs, really don't delete them, no matter how

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redundant they are.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28777 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Owen Anderson 2006-06-14 04:43:14 +00:00
parent 13a68e4257
commit 90245d4cbb
1 changed files with 2 additions and 1 deletions
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3
lib/VMCore/BasicBlock.cpp
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@ -213,7 +213,8 @@ void BasicBlock::removePredecessor(BasicBlock *Pred,
PN->removeIncomingValue(Pred, false);
// If all incoming values to the Phi are the same, we can replace the Phi
// with that value.
if (Value *PNV = PN->hasConstantValue()) {
Value* PNV = 0;
if (!DontDeleteUselessPHIs && (PNV = PN->hasConstantValue())) {
PN->replaceAllUsesWith(PNV);
PN->eraseFromParent();
}