[clang] [compiler-rt] [llvm] [LFI] Introduce AArch64 LFI Target (PR #167061)

[Peter Smith via llvm-commits]

https://github.com/smithp35 commented:

Thanks for the updates. I've resolved most of the conversations.

One other thing that could be worth considering for the future is how the rewrites interact with linker optimization (relaxation) https://github.com/ARM-software/abi-aa/blob/main/aaelf64/aaelf64.rst#relocation-optimization 

To some extent this is just delaying some rewriting until link time, it would only make sense if the extra information available at link time, such as the destination address of targets would permit better code-sequences.

https://github.com/llvm/llvm-project/pull/167061