[llvm] [CSSPGO] Compute and report profile matching recovered callsites and samples (PR #79090)

[Lei Wang via llvm-commits]

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@@ -444,15 +444,36 @@ class SampleProfileMatcher {
   // the profile.
   StringMap<LocToLocMap> FuncMappings;
 
-  // Profile mismatching statstics.
+  // Match state for an anchor/callsite.
+  enum class MatchState {
+    Matched = 0,
+    Mismatched = 1,
+    // Stay Matched after profile matching.
+    StayMatched = 2,
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wlei-llvm wrote:

Sure, I lean towards the second one(state change), thinking it can align with the name of the stats counter such as `NumRecoveredCallsites`, `RecoveredCallsiteSamples` 

Updated in the new version, thanks for the suggestion!

https://github.com/llvm/llvm-project/pull/79090