Recommit "[X86] Remove XOP VPCMOV intrinsics and autoupgrade them to native IR."

Clang has now been fixed to not use these intrinsics.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295571 91177308-0d34-0410-b5e6-96231b3b80d8
7 files changed