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

[via llvm-commits]

================
@@ -590,13 +609,260 @@ void SampleProfileMatcher::computeAndReportProfileStaleness() {
   }
 }
 
-void SampleProfileMatcher::runOnModule() {
+// Find functions that don't show in the profile or profile symbol list, which
+// are supposed to be new functions. We use them as the targets for renaming
+// matching.
+void SampleProfileMatcher::findIRNewFunctions(
----------------
WenleiHe wrote:

nit: replace all IRNewFunction with newIRFunction

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