[llvm] [AArch64] Model ZA array using inaccessible memory (PR #132058)

[Paul Walker via llvm-commits]

https://github.com/paulwalker-arm commented:

Please can you also rename the following classes to be prefixed by SVE2:
SME2_FP8_CVT_X2_Single_Intrinsic
SME2_FP8_CVT_Single_X4_Intrinsic

https://github.com/llvm/llvm-project/pull/132058