[llvm] [MachineLICM][AArch64] Hoist COPY instructions with other uses in the loop (PR #71403)

[via llvm-commits]

Rin18 wrote:

> Thanks. Can you rebase to see if the issue with the test goes away? Adding some AMD reviewers to check these test changes look OK

Yeah, rebasing sounds like a good idea, I'll do that.

https://github.com/llvm/llvm-project/pull/71403