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

[Mingming Liu via cfe-commits]

minglotus-6 wrote:

Besides the [non-elf warning](https://github.com/llvm/llvm-project/pull/66825#issuecomment-1968344800), I did some clean-ups (e.g., [delete braces around one-line if/loop](https://github.com/llvm/llvm-project/pull/66825#issuecomment-1968344800) and merges.

Planning to merge this one in by end of the week if no objections or concerns. It has been a long time, and thanks for the reviews on this one and the smaller nfc patches.

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