Index: llvm/lib/Transforms/Utils/SimplifyCFG.cpp
===================================================================
--- llvm/lib/Transforms/Utils/SimplifyCFG.cpp
+++ llvm/lib/Transforms/Utils/SimplifyCFG.cpp
@@ -4268,7 +4268,7 @@
     if (DTU && DTU->hasDomTree())
       DT = &DTU->getDomTree();
 
-    if (!isGuaranteedNotToBePoison(ExtraCase, AC, BI, DT))
+    if (!isGuaranteedNotToBeUndefOrPoison(ExtraCase, AC, BI, DT))
       ExtraCase = Builder.CreateFreeze(ExtraCase);
 
     if (TrueWhenEqual)