[AVX-512] Improve lowering of zero_extend of v4i1 to v4i32 and v2i1 to v2i64 with VLX, but no DQ or BW support.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@291747 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed