[llvm] [AArch64][NeoverseV1/V2/V3] Detect ADD-based zero-latency moves (PR #216750)

[David Green via llvm-commits]

davemgreen wrote:

Do you have any evidence that these are eliminated during rename? Like an llvm-exegesis run of the opcodes or manual benchmark.

https://github.com/llvm/llvm-project/pull/216750