[llvm] [AArch64] Fix invalid address-mode folding (PR #142167)

[David Green via llvm-commits]

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

LGTM thanks. I wasn't able to get this to come up without turning off sinking in CGP, but I can imagine it could in some more complex situation.

https://github.com/llvm/llvm-project/pull/142167