[AVX512] Remove alternate data type versions of VALIGND, VALIGNQ, VMOVSHDUP and VMOVSLDUP. They don't have any tests and I don't think they can be selected. If they are truly needed they should be implemented with patterns against the normal instructions and not separate instructions.
[AVX512] Remove alternate data type versions of VALIGND, VALIGNQ, VMOVSHDUP and VMOVSLDUP. They don't have any tests and I don't think they can be selected. If they are truly needed they should be implemented with patterns against the normal instructions and not separate instructions.

git-svn-id: 0ff597fd157e6f4fc38580e8d64ab130330d2411@256475 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/llvm,apple/swift-llvm,GPUOpen-Drivers/llvm,apple/swift-llvm,GPUOpen-Drivers/llvm,GPUOpen-Drivers/llvm,GPUOpen-Drivers/llvm,GPUOpen-Drivers/llvm,llvm-mirror/llvm,apple/swift-llvm,llvm-mirror/llvm,apple/swift-llvm,llvm-mirror/llvm,llvm-mirror/llvm,GPUOpen-Drivers/llvm,llvm-mirror/llvm,apple/swift-llvm,apple/swift-llvm,GPUOpen-Drivers/llvm,GPUOpen-Drivers/llvm,llvm-mirror/llvm,apple/swift-llvm,llvm-mirror/llvm,apple/swift-llvm,llvm-mirror/llvm