[llvm] [AArch64] Report icmp as free if it can be folded into ands (PR #143286)

[Sam Tebbs via llvm-commits]

https://github.com/SamTebbs33 approved this pull request.

LGTM, thanks. Do let @davemgreen have another look though.

https://github.com/llvm/llvm-project/pull/143286