[llvm] [AArch64] SME definitions for C1-Ultra scheduling model (PR #194850)

[Asher Dobrescu via llvm-commits]

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Asher8118 wrote:

How were the instructions in those tests selected? I feel like there's quite a few instruction groups that have streaming SVE mode and use the C pipeline which are not included in either SME testing files. eg: `scvtf`, `fmlalb` or `cpy` at a glance

https://github.com/llvm/llvm-project/pull/194850