1. [HIP] Fix -gsplit-dwarf option (details)
Commit e50465ecefc964e5700df26fc7e02a673eed085a by Yaxun.Liu
[HIP] Fix -gsplit-dwarf option

when -gsplit option is used with clang driver, clang driver will create
a filename with .dwo option based on the input file name and pass
it to clang -cc1. This file is used for storing the debug info. Since
HIP generate separate object files for different GPU arch's,
this file should be different for different GPU arch. This patch
adds _ and GPU arch to the stem of the dwo file.

Differential Revision:
The file was modifiedclang/lib/Driver/ToolChains/Clang.cpp (diff)
The file was addedclang/test/Driver/hip-gsplit-dwarf-options.hip
The file was modifiedclang/lib/Driver/ToolChains/MinGW.cpp (diff)
The file was modifiedclang/lib/Driver/ToolChains/Gnu.cpp (diff)
The file was modifiedclang/lib/Driver/ToolChains/CommonArgs.cpp (diff)
The file was modifiedclang/lib/Driver/ToolChains/CommonArgs.h (diff)