DWARF type hashing: pointers to members

Includes a test case/FIXME demonstrating a bug/limitation in pointer to
member hashing. To be honest I'm not sure why we don't just always use
summary hashing for referenced types... but perhaps I'm missing
something.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193175 91177308-0d34-0410-b5e6-96231b3b80d8
Simplify testing case (Thanks Rafael for the testing case).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193177 91177308-0d34-0410-b5e6-96231b3b80d8
R600: Remove unused InstrInfo::getMovImmInstr() function

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193178 91177308-0d34-0410-b5e6-96231b3b80d8
R600: Simplify handling of private address space

The AMDGPUIndirectAddressing pass was previously responsible for
lowering private loads and stores to indirect addressing instructions.
However, this pass was buggy and way too complicated.  The only
advantage it had over the new simplified code was that it saved one
instruction per direct write to private memory.  This optimization
likely has a minimal impact on performance, and we may be able
to duplicate it using some other transformation.

For the private address space, we now:
1. Lower private loads/store to Register(Load|Store) instructions
2. Reserve part of the register file as 'private memory'
3. After regalloc lower the Register(Load|Store) instructions to
   MOV instructions that use indirect addressing.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193179 91177308-0d34-0410-b5e6-96231b3b80d8
R600/SI: Fix warning on non-asserts build

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193180 91177308-0d34-0410-b5e6-96231b3b80d8
R600/SI: Use llvm_unreachable() for an always false assert

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193183 91177308-0d34-0410-b5e6-96231b3b80d8