[llvm-branch-commits] [llvm] release/20.x: [AArch64] Fix op mask detection in performZExtDeinterleaveShuffleCombine (#126054) (PR #126263)

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llvmbot wrote:

@SamTebbs33 What do you think about merging this PR to the release branch?

https://github.com/llvm/llvm-project/pull/126263