[llvm] [LLVM][rtsan] Add RealtimeSanitizer transform pass (PR #101232)

[Fangrui Song via llvm-commits]

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@@ -0,0 +1,34 @@
+//=- RealtimeSanitizer.h - RealtimeSanitizer instrumentation ----*- C++ -*-==//
+//-*-===//
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MaskRay wrote:

unneeded  second line

the first line should use `//===-` (3 `=`). Both `//===-` and `//===-- ` are common in the code base and I am happy with either style.

https://github.com/llvm/llvm-project/pull/101232