[llvm] [SampleFDO] Stale profile renaming matching (PR #92151)

[via llvm-commits]

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@@ -58,6 +60,20 @@ class SampleProfileMatcher {
   StringMap<std::unordered_map<LineLocation, MatchState, LineLocationHash>>
       FuncCallsiteMatchStates;
 
+  struct RenameDecisionCacheHash {
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WenleiHe wrote:

naming: rename is not a decision. More like `FunctionProfileNameMap`?

Also I suggest we don't put too much emphasis on "renaming", because this is more general than handling renaming as renaming is one of the causes.

https://github.com/llvm/llvm-project/pull/92151