[llvm] [AArch64] Combine (and/or X, (dup (not Y))) -> (bic/orn X, (dup Y)) (PR #175739)

[David Green via llvm-commits]

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

Thanks - nice one. This doesn't check the shuffle mask, but I guess that is OK considering the insert. LGTM

https://github.com/llvm/llvm-project/pull/175739