[PATCH] Infrastructure changes to support DW_OP_piece in LLVM IR.

[Eric Christopher]

As a note to all I just added llvm-commits to the thread last week,
it'd been an ongoing review and llvm-commits had accidentally been
forgotten.

-eric

On Tue, Jul 29, 2014 at 10:48 AM, Adrian Prantl <aprantl at apple.com> wrote:
> Addressed comments from previous round; mostly clarifications.
>
> http://reviews.llvm.org/D3373
>
> Files:
>   docs/SourceLevelDebugging.rst
>   include/llvm/CodeGen/AsmPrinter.h
>   include/llvm/IR/DIBuilder.h
>   include/llvm/IR/DebugInfo.h
>   lib/CodeGen/AsmPrinter/AsmPrinter.cpp
>   lib/CodeGen/AsmPrinter/AsmPrinterDwarf.cpp
>   lib/CodeGen/AsmPrinter/DbgValueHistoryCalculator.cpp
>   lib/CodeGen/AsmPrinter/DbgValueHistoryCalculator.h
>   lib/CodeGen/AsmPrinter/DebugLocEntry.h
>   lib/CodeGen/AsmPrinter/DwarfDebug.cpp
>   lib/CodeGen/AsmPrinter/DwarfDebug.h
>   lib/CodeGen/AsmPrinter/DwarfUnit.cpp
>   lib/IR/DebugInfo.cpp