[llvm] [BOLT][AArch64] Handle OpNegateRAState to enable optimizing binaries with pac-ret hardening (PR #120064)

[Maksim Panchenko via llvm-commits]

https://github.com/maksfb commented:

Thanks again for adding the support for PAC-RET! Sorry for delayed review.

What is the policy for passes that insert instructions, is it their responsibility for annotating the state or is it something `InsertNegateRAStatePass` can handle?

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