[clang] [CIR][AArch64] Lower NEON laneq FMA builtins (PR #202337)

[Andrzej Warzyński via cfe-commits]

banach-space wrote:

> > LGTM, many thanks!
> > Non-blocking question - how do you order the FMA tests? I am just a bit surprised that new tests are interleaved with the old tests rather than added at the end. Presumably you are trying to order them?
> 
> I didn't pay too much attention to the order, shall I reorder the tests so `vfma_laneq_*` before `vfmaq_laneq_*`?

I see that you have already done that, thank you!

Btw, are you able to continue with https://arm-software.github.io/acle/neon_intrinsics/advsimd.html#fused-multiply-accumulate? Is there anything left? 

Thank you for contributing 🙏🏻 

https://github.com/llvm/llvm-project/pull/202337