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

[Mingming Liu via cfe-commits]

minglotus-6 wrote:

thanks for the fix!

One test `Clang :: Preprocessor/init.c` failed (https://lab.llvm.org/buildbot/#/builders/74/builds/24843) and the error is due to mismatched macros (if I'm reading correctly wants `__LONG_LONG_MAX__` right after `__LLONG_WIDTH__` but sees `__LLVM_INSTR_PROFILE_GENERATE` in the middle). I'm wondering if the test (and other tests like `Preprocessor/init-aarch64.c`) needs update (or if they should be fixed by https://github.com/llvm/llvm-project/issues/77546#issuecomment-1887953628)

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