[compiler-rt] [ctxprof] Auto root detection: trie for stack samples (PR #133106)

[Snehasish Kumar via llvm-commits]

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@@ -0,0 +1,123 @@
+#include "../RootAutoDetector.h"
+#include "sanitizer_common/sanitizer_array_ref.h"
+#include "gtest/gtest.h"
+
+using namespace __ctx_profile;
+
+class MockCallsiteTree final : public PerThreadCallsiteTrie {
+  // Return the first multiple of 100.
+  uptr getFctStartAddr(uptr CallsiteAddress) const override {
+    return (CallsiteAddress / 100) * 100;
+  }
+};
+
+class Marker {
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snehasish wrote:

Add a couple of lines to describe how this class is used as a test helper?

https://github.com/llvm/llvm-project/pull/133106