[llvm] [BOLT][AArch64] Support for pointer authentication (v2) (PR #120064)

[Paschalis Mpeis via llvm-commits]

https://github.com/paschalis-mpeis commented:

Hey Gergely, thanks a lot for your patch. It is very well written!

> The change has been tested on unittests binaries from the Chromium project, namely zlib_unittests and base_unittests.

It's great that you tested this externally with Chromium.
My high-level comment is about bolt testing. Any plans or thoughts about it?

You may also find some more comments below, mostly 'nits'. Thanks again!

https://github.com/llvm/llvm-project/pull/120064