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

[Paschalis Mpeis via llvm-commits]

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+# Optimizing binaries with pac-ret hardening
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paschalis-mpeis wrote:

Can you also format the doc at 80 columns to match the rest of the dos? (can ignore lines with long links).

Thanks again for this work!

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