[clang] [CIR][AArch64] Lower NEON vfms builtins (PR #207022)

[Yair Ben Avraham via cfe-commits]

yairbenavraham wrote:

> LGTM, thank you!
> 
> From what I can tell, this concludes https://arm-software.github.io/acle/neon_intrinsics/advsimd.html#markdown-toc-fused-multiply-accumulate? Or am I missing something?

Yes, concludes section 2.1.1.2.5. here: https://arm-software.github.io/acle/neon_intrinsics/advsimd.html#fused-multiply-accumulate

https://github.com/llvm/llvm-project/pull/207022