[clang] [llvm] [clang][llvm][AArch64] Set hardening fn attrs on synthetic functions (PR #211013)

[Daniil Kovalev via cfe-commits]

kovdan01 wrote:

@ojhunt @ahmedbougacha I would appreciate if you could share some feedback soon - this patch is a correctness fix and it I would prefer it to be cherry-picked to release, so timing matters.

Your feedback would be highly valuable since the issue is non-Linux-specific and the patch would affect Apple targets as well.

I would be glad to receive any comments from anyone else interested as well

https://github.com/llvm/llvm-project/pull/211013