[clang] [CIR][AArch64] Handle constrained Neon FMA and sqrt (PR #218307)

[Andrzej Warzyński via cfe-commits]

banach-space wrote:

> Just out of curiosity, is there any plan to make the *-constrained.c naming convention meaningful to lit? 

Not that I know of, no :)

https://github.com/llvm/llvm-project/pull/218307