[X86] Add explicit mc-encoding checks to X86/viabs.ll. NFC.
[X86] Add explicit mc-encoding checks to X86/viabs.ll. NFC.

Add explicit mc-encoding checks showing that the AVX512VL ABS intrinsics are actually mapped to EVEX encoding.
This is a pre-commit for a soon to come patch which will lower x86 target specific ABS intrinsics to IR.

Differential Revision: https://reviews.llvm.org/D37688

git-svn-id: 0ff597fd157e6f4fc38580e8d64ab130330d2411@313131 91177308-0d34-0410-b5e6-96231b3b80d8

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