[NFC] Switch a few uses of undef to poison as placeholders for unreachable code

1 files changed, 2 insertions, 2 deletions

diff --git a/llvm/lib/Transforms/Utils/CloneFunction.cpp b/llvm/lib/Transforms/Utils/CloneFunction.cpp
index e737a594..1d34821 100644
--- a/llvm/lib/Transforms/Utils/CloneFunction.cpp
+++ b/llvm/lib/Transforms/Utils/CloneFunction.cpp
@@ -734,14 +734,14 @@ void llvm::CloneAndPruneIntoFromInst(Function *NewFunc, const Function *OldFunc,
     }
 
     // If the loops above have made these phi nodes have 0 or 1 operand,
-    // replace them with undef or the input value.  We must do this for
+    // replace them with poison or the input value.  We must do this for
     // correctness, because 0-operand phis are not valid.
     PN = cast<PHINode>(NewBB->begin());
     if (PN->getNumIncomingValues() == 0) {
       BasicBlock::iterator I = NewBB->begin();
       BasicBlock::const_iterator OldI = OldBB->begin();
       while ((PN = dyn_cast<PHINode>(I++))) {
-        Value *NV = UndefValue::get(PN->getType());
+        Value *NV = PoisonValue::get(PN->getType());
         PN->replaceAllUsesWith(NV);
         assert(VMap[&*OldI] == PN && "VMap mismatch");
         VMap[&*OldI] = NV;