llvm
diff --git a/‎llvm/lib/Analysis/ValueTracking.cpp
+1-1 b/‎llvm/lib/Analysis/ValueTracking.cpp
+1-1
@@ -4751,7 +4751,7 @@ void computeKnownFPClass(const Value *V, const APInt &DemandedElts,
         Known = KnownFPClass();
         return;
       }
-      if (isa<UndefValue>(Elt))
+      if (isa<PoisonValue>(Elt))
         continue;
       auto *CElt = dyn_cast<ConstantFP>(Elt);
       if (!CElt) {
Original file line number	Diff line number	Diff line change
`@@ -4751,7 +4751,7 @@ void computeKnownFPClass(const Value *V, const APInt &DemandedElts,`
`4751`	`4751`	`Known = KnownFPClass();`
`4752`	`4752`	`return;`
`4753`	`4753`	`}`
`4754`		`- if (isa<UndefValue>(Elt))`
	`4754`	`+ if (isa<PoisonValue>(Elt))`
`4755`	`4755`	`continue;`
`4756`	`4756`	`auto *CElt = dyn_cast<ConstantFP>(Elt);`
`4757`	`4757`	`if (!CElt) {`