[compiler-rt] [llvm] [ctxprof] root autodetection mechanism (PR #133147)

[Mircea Trofin via llvm-commits]

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@@ -418,12 +436,24 @@ void __llvm_ctx_profile_start_collection() {
       resetContextNode(*Root->FirstUnhandledCalleeNode);
     __sanitizer::atomic_store_relaxed(&Root->TotalEntries, 0);
   }
+  if (AutodetectDuration) {
+    auto *RD = new (__sanitizer::InternalAlloc(sizeof(RootAutoDetector)))
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mtrofin wrote:

Yes, and knowing when to free it is tricky. Leaving a comment.

https://github.com/llvm/llvm-project/pull/133147