[llvm] [llvm-exegesis] [AArch64] Reland Resolving "not all operands are initialized by snippet generator" (PR #156423)

[Aiden Grossman via llvm-commits]

https://github.com/boomanaiden154 approved this pull request.

LGTM, assuming you've rerun the test quite a few times locally to ensure there aren't any flakes.

https://github.com/llvm/llvm-project/pull/156423