[AVX-512] Remove intrinsics for 128/256-bit masked shift by single element in xmm. Instead upgrade them to a select and the older SSE/AVX2 intrinsic.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@286070 91177308-0d34-0410-b5e6-96231b3b80d8
7 files changed