[llvm-branch-commits] [compiler-rt] [llvm] [ctxprof] Track unhandled call targets (PR #131417)

[Snehasish Kumar via llvm-branch-commits]

================
@@ -83,6 +84,20 @@ struct ContextRoot {
   // Count the number of entries - regardless if we could take the `Taken` mutex
   ::__sanitizer::atomic_uint64_t TotalEntries = {};
 
+  // Profiles for functions we encounter when collecting a contexutal profile,
+  // that are not associated with a callsite. This is expected to happen for
+  // signal handlers, but it also - problematically - currently happens for
+  // mem{memset|copy|move|set}, which are currently inserted after profile
----------------
snehasish wrote:

Maybe just generalize this statement to "it also happens for functions generated after profile instrumention e.g. mem{set|copy|move}".

https://github.com/llvm/llvm-project/pull/131417