[llvm] [LV] Use frozen start value for FindLastIV if needed. (PR #132691)

[Mel Chen via llvm-commits]

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@@ -1403,6 +1403,13 @@ void VPValue::replaceUsesWithIf(
   }
 }
 
+void VPUser::replaceUsesOfWith(VPValue *From, VPValue *To) {
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Mel-Chen wrote:

Maybe we can remove this since we don't use the function in this patch.

https://github.com/llvm/llvm-project/pull/132691