[GlobalISel] Remove references to rhs of shufflevector if rhs is undef#115076

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

konstantinschwarz:kschwarz.upstream.shufflevector.undef.rhskonstantinschwarz/llvm-project:kschwarz.upstream.shufflevector.undef.rhsCopy head branch name to clipboard