diff options
| -rw-r--r-- | lib/Transforms/Utils/Local.cpp | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/lib/Transforms/Utils/Local.cpp b/lib/Transforms/Utils/Local.cpp index fe27f30..b188884 100644 --- a/lib/Transforms/Utils/Local.cpp +++ b/lib/Transforms/Utils/Local.cpp @@ -353,7 +353,8 @@ Value *llvm::hasConstantValue(PHINode *PN) { // Value *InVal = 0; for (unsigned i = 0, e = PN->getNumIncomingValues(); i != e; ++i) - if (PN->getIncomingValue(i) != PN) // Not the PHI node itself... + if (PN->getIncomingValue(i) != PN && // Not the PHI node itself... + !isa<UndefValue>(PN->getIncomingValue(i))) if (InVal && PN->getIncomingValue(i) != InVal) return 0; // Not the same, bail out. else @@ -363,7 +364,7 @@ Value *llvm::hasConstantValue(PHINode *PN) { // that only has entries for itself. In this case, there is no entry into the // loop, so kill the PHI. // - if (InVal == 0) InVal = Constant::getNullValue(PN->getType()); + if (InVal == 0) InVal = UndefValue::get(PN->getType()); // All of the incoming values are the same, return the value now. return InVal; |