[clang-tools-extra] [clang] [compiler-rt] [PGO] Reland PGO's Counter Reset and File Dumping APIs #76471 (PR #78285)

[Qiongsi Wu via cfe-commits]

qiongsiwu wrote:

It seems that either the precommit CI has some problems, or there are existing `compiler-rt` breakages. https://github.com/llvm/llvm-project/pull/78037 is also failing the same test cases. The changes in #78037 does not look harmful either. I took a brief look at the current buildbots and I don't see any similar failures. Additionally, I am not able to reproduce these failures locally. 

I will see what can be investigated next, but I suspect at this PR is not the root cause of the `dlopen.cpp` failures.  

https://github.com/llvm/llvm-project/pull/78285