Add support for sparcv9 targets.

The SPARC v8 and SPARC v8 architectures are very similar, so use a base
class to share most information between them.

Include operating systems with known SPARC v9 ports.

Also fix two issues with the SPARC v8 data layout string: SPARC v8 is a
big endian target with a 64-bit aligned stack.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179596 91177308-0d34-0410-b5e6-96231b3b80d8
Suppress unused warning on static inline function template specializations.

Patch by Halfdan Ingvarsson!

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179598 91177308-0d34-0410-b5e6-96231b3b80d8
Objective-C IRGen. Use llvm::WeakVH
for caching couple of global symbols used
for generation of CF/NS string meta-data
so they are not released prematuely in certain
corner cases. // rdar:// 13598026.
Reviewed by John M.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179599 91177308-0d34-0410-b5e6-96231b3b80d8
Fix handling of atomic shift operations, from Serge Pavlov.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179600 91177308-0d34-0410-b5e6-96231b3b80d8
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