[llvm-branch-commits] [llvm] AArch64: Relax x16/x17 constraint on AUT in certain cases. (PR #132857)

[Anatoly Trosinenko via llvm-branch-commits]

https://github.com/atrosinenko approved this pull request.

LGTM, thanks!

A minor nit-picking is that the description of `emitPtrauthDiscriminator` in AsmPrinter is a bit out of sync with the implementation, as it does not mention that the requirement on certain registers being x16/x17 can be relaxed.

https://github.com/llvm/llvm-project/pull/132857