[Assignment Tracking] Revert to using undef in isKillAddress

pedroclobo · pedroclobo · commit 872ce494ee42 · 2024-12-13T09:58:23.000Z
`undef` should continue to be used here to ensure compatibility with
older IR.
diff --git a/llvm/lib/IR/IntrinsicInst.cpp b/llvm/lib/IR/IntrinsicInst.cpp
@@ -228,7 +228,7 @@ void DbgAssignIntrinsic::setKillAddress() {
 
 bool DbgAssignIntrinsic::isKillAddress() const {
   Value *Addr = getAddress();
-  return !Addr || isa<PoisonValue>(Addr);
+  return !Addr || isa<UndefValue>(Addr);
 }
 
 void DbgAssignIntrinsic::setValue(Value *V) {

Original file line number	Diff line number	Diff line change
`@@ -228,7 +228,7 @@ void DbgAssignIntrinsic::setKillAddress() {`
`228`	`228`
`229`	`229`	`bool DbgAssignIntrinsic::isKillAddress() const {`
`230`	`230`	`Value *Addr = getAddress();`
`231`		`- return !Addr \|\| isa<PoisonValue>(Addr);`
	`231`	`+ return !Addr \|\| isa<UndefValue>(Addr);`
`232`	`232`	`}`
`233`	`233`
`234`	`234`	`void DbgAssignIntrinsic::setValue(Value *V) {`