[llvm] [VectorCombine] Fold "(or (zext (bitcast X)), (shl (zext (bitcast Y)), C))" -> "(bitcast (concat X, Y))" MOVMSK bool mask style patterns (PR #119695)

[Alexey Bataev via llvm-commits]

https://github.com/alexey-bataev approved this pull request.

LG

https://github.com/llvm/llvm-project/pull/119695