[GlobalISel] Turn shuffle a, b, mask -> shuffle undef, b, mask iff mask does not reference a#115377

konstantinschwarz merged 1 commit intollvm:mainllvm/llvm-project:mainfrom

konstantinschwarz:kschwarz.upstream.shufflevector.disjoint.maskskonstantinschwarz/llvm-project:kschwarz.upstream.shufflevector.disjoint.masksCopy head branch name to clipboard