[clang] [compiler-rt] [llvm] [PGO] Initialize GCOV Writeout and Reset Functions in the Runtime on AIX (PR #108570)

[Qiongsi Wu via cfe-commits]

qiongsiwu wrote:

Thanks so much @hubert-reinterpretcast for the detailed review! All existing comments are now addressed.

https://github.com/llvm/llvm-project/pull/108570