[clang] [llvm] [AArch64][VecLib] Add libmvec support for AArch64 targets (PR #143696)

[Benjamin Maxwell via llvm-commits]

https://github.com/MacDue commented:

I double-checked the functions added cover up to 2.40 -- I think they do :+1:: Generally, LGTM -- but I'll leave final approval to Sander/Paul.

https://github.com/llvm/llvm-project/pull/143696