AMDGPU/SI: Promote i1 SETCC operations

Summary:
While working on uniform branching, I've hit a few cases where we emit
i1 SETCC operations.

Reviewers: arsenm

Subscribers: arsenm, llvm-commits

Differential Revision: http://reviews.llvm.org/D16233

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@258352 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed