[llvm] [llvm-exegesis] [AArch64] Resolving "not all operands are initialized by snippet generator" (PR #142529)

[David Green via llvm-commits]

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

LGTM, thanks.

OPERAND_PCREL of 0 still seems a bit off to me, but we can change it if needed.

https://github.com/llvm/llvm-project/pull/142529