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

[via llvm-commits]

yafet-a wrote:

I am currently interested in/working on implementing the todo for supporting instrumentation mode but it seems that on a lot of the samples I am testing on my end with the instrument flag (redis and others for example) seem to be operating fine without segfaults and the instructions are in the correct order. I was wondering in particular what kind of breakages you were experiencing and what flags (beyond instrument) you were running to get broken binaries in instrumentation mode?

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