[compiler-rt] [clang] [clang-tools-extra] [PGO] Exposing PGO's Counter Reset and File Dumping APIs (PR #76471)

[Snehasish Kumar via cfe-commits]

snehasish wrote:

@teresajohnson I mentioned the same thing on [discourse](https://discourse.llvm.org/t/pgo-are-the-llvm-profile-functions-stable-c-apis-across-llvm-releases/75832/5) but it seems like linking on AIX does not support this model.

https://github.com/llvm/llvm-project/pull/76471