[llvm] [AArch64][llvm] Unify AArch64 tests into a single file (1/4) (NFC) (PR #146328)

[Virginia Cangelosi via llvm-commits]

virginia-cangelosi wrote:

When I did the conversion semi automatically. I used scripts to make small changes and then used the diffs to check that things weren't missed.



https://github.com/llvm/llvm-project/pull/146328