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

[KAWASHIMA Takahiro via cfe-commits]

kawashima-fj wrote:

Thanks for your excellent work! I'll add the same support to Flang. If you (or anyone) are already working on this, please let me know.

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