[X86] Enable extended comparison predicate support for SETUEQ/SETONE when targeting AVX instructions.

We believe that despite AMD's documentation, that they really do support all 32 comparision predicates under AVX.

Differential Revision: https://reviews.llvm.org/D38609

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@315201 91177308-0d34-0410-b5e6-96231b3b80d8
7 files changed