Teach lint about address spaces

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203132 91177308-0d34-0410-b5e6-96231b3b80d8
Fix missing C++ mode comment

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203133 91177308-0d34-0410-b5e6-96231b3b80d8
R600/SI: Expand selects on vectors.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203134 91177308-0d34-0410-b5e6-96231b3b80d8