R600: Fix assert on vector sdiv

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@211000 91177308-0d34-0410-b5e6-96231b3b80d8
R600: Remove a few more things from AMDILISelLowering

Try to keep all the setOperationActions for integer ops
together.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@211001 91177308-0d34-0410-b5e6-96231b3b80d8
R600: Add a rotr testcase I forgot to add

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@211002 91177308-0d34-0410-b5e6-96231b3b80d8