AVX-512: Concat 4 128-bit vectors in one 512-bit vector.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@195229 91177308-0d34-0410-b5e6-96231b3b80d8
Fixed compilation error.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@195230 91177308-0d34-0410-b5e6-96231b3b80d8