[X86]: Quit promoting 8 and 16 bit compares to 32 bit.
Differential Revision: http://reviews.llvm.org/D21144


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@272801 91177308-0d34-0410-b5e6-96231b3b80d8
9 files changed