[clang] [llvm] [AArch64] Add intrinsics for non-widening FMOPA/FMOPS (PR #88105)

[Momchil Velikov via cfe-commits]

momchil-velikov wrote:

> I noticed that file names and file location are using sme2 as prefix. Shouldn't we use sme2p1 prefix for this intrinsic ?

None of instructions seem to require `FEAT_SME2p1`:
https://developer.arm.com/documentation/ddi0602/2024-03/SME-Instructions/BFMOPA--non-widening---BFloat16-floating-point-outer-product-and-accumulate-?lang=en
https://developer.arm.com/documentation/ddi0602/2024-03/SME-Instructions/BFMOPS--non-widening---BFloat16-floating-point-outer-product-and-subtract-?lang=en
https://developer.arm.com/documentation/ddi0602/2024-03/SME-Instructions/FMOPA--non-widening---Floating-point-outer-product-and-accumulate-?lang=en
https://developer.arm.com/documentation/ddi0602/2024-03/SME-Instructions/FMOPS--non-widening---Floating-point-outer-product-and-subtract-?lang=en


https://github.com/llvm/llvm-project/pull/88105