R600/SI: Un-xfail tests which work now

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218164 91177308-0d34-0410-b5e6-96231b3b80d8
R600: Un-xfail a test which passes with pass disabled

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218165 91177308-0d34-0410-b5e6-96231b3b80d8
DIBuilder: Delete dead code, NFC

There are two versions of `DIBuilder::createObjCIVar()`.  Delete the one
that's apparently dead.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218167 91177308-0d34-0410-b5e6-96231b3b80d8
Converting InstrProf's error_category to a ManagedStatic to avoid static constructors and destructors.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218168 91177308-0d34-0410-b5e6-96231b3b80d8
constify the TargetMachine being passed through the Mips subtarget
creation.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218169 91177308-0d34-0410-b5e6-96231b3b80d8