llvm-project

12f75bba - Revert "[X86] SimplifyDemandedVectorEltsForTargetNode - reduce the size of VPERMV/VPERMV3 nodes if the upper elements are not demanded" (#134256)

Revert "[X86] SimplifyDemandedVectorEltsForTargetNode - reduce the size of VPERMV/VPERMV3 nodes if the upper elements are not demanded" (#134256) Found a typo in the VPERMV3 mask adjustment - I'm going to revert and re-apply the patch with a fix Reverts llvm/llvm-project#133923