[X86][SSE41] Additional tests for extracting zeroable shuffle elements

We can currently only match zeroable vector elements of the same size as the shuffle type - these tests demonstrate the problem and a solution will be shortly added in an updated D14261

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@263606 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed