[X86][SSE] Added v4f32 shuffle with zero tests

This is mainly test cases for improvements to insertps matching, but pre-SSE41 shuffles could be improved as well

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@256705 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed