Use -emit-llvm for the following tests to stop them from failing for Hexagon:

CodeGenCXX/vtable-debug-info.cpp
Driver/objc++-cpp-output.mm
Driver/objc-cpp-output.m



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179602 91177308-0d34-0410-b5e6-96231b3b80d8