[clang] [compiler-rt] [llvm] [InstrFDO][TypeProf] Implement binary instrumentation and profile read/write (PR #66825)

[Snehasish Kumar via cfe-commits]

https://github.com/snehasish commented:

Here are some things I noticed, haven't looked at the tests yet.

https://github.com/llvm/llvm-project/pull/66825