[llvm] [DAGCombiner] Fix ReplaceAllUsesOfValueWith mutation bug in visitFREEZE (PR #104924)

[Yingwei Zheng via llvm-commits]

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@@ -15826,7 +15829,18 @@ SDValue DAGCombiner::visitFREEZE(SDNode *N) {
   // it could create undef or poison due to it's poison-generating flags.
   // So not finding any maybe-poison operands is fine.
 
-  for (SDValue MaybePoisonOperand : MaybePoisonOperands) {
+  for (unsigned OpNo : MaybePoisonOperandNumbers) {
+    // N0 can mutate during iteration, so make sure to refech the maybe poison
----------------
dtcxzyw wrote:

```suggestion
    // N0 can mutate during iteration, so make sure to refetch the maybe poison
```

https://github.com/llvm/llvm-project/pull/104924