R600/SI: Fix missing -verify-machineinstrs on a test

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222627 91177308-0d34-0410-b5e6-96231b3b80d8
R600/SI: Fix broken check lines and modernize prefixes

Use -LABEL and remove -CHECK

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222628 91177308-0d34-0410-b5e6-96231b3b80d8
R600/SI: Add additional tests for i1 loads

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222629 91177308-0d34-0410-b5e6-96231b3b80d8
R600: Fix assert on copy of an i1 on pre-SI

i1 is not a legal type on Evergreen, so this combine proceeded
and tried to produce a bitcast between i1 and i8.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222630 91177308-0d34-0410-b5e6-96231b3b80d8