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

[Qiongsi Wu via cfe-commits]

qiongsiwu wrote:

Ok I think I have a good theory on why these tests are failing. Most likely the test machine does not have the latest `lld` during the test. If we build `lld` together with the project, these tests pass. 

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