[PATCH] Debug info: Support fragmented variables.

[Adrian Prantl]

Hi Eric & Chandler,

it’s been a while, and I was just thinking about what we could do to make this move forward a little faster. I understand that the more time is passing the patch grows larger and large which makes it harder to review. We could, for instance split out the SROA changes into a separate patch, and then focus on the IR and DwarfDebug changes initially, with the type legalizer providing the necessary test cases.

cheers,
adrian


On Mar 18, 2014, at 5:55 PM, Adrian Prantl <aprantl at apple.com> wrote:

>  Rebased on r204198.
>  Moved the DWARF expression output for DW_op_pieces out of emitDebugLocEntry::emitDebugLocEntry() and into a DWARFPieceEmitter. Should be more readable this way.
> 
> Hi #llvm,
> 
> http://llvm-reviews.chandlerc.com/D2680
> 
> CHANGE SINCE LAST DIFF
>  http://llvm-reviews.chandlerc.com/D2680?vs=7650&id=7931#toc
> 
> Files:
>  docs/SourceLevelDebugging.rst
>  include/llvm/CodeGen/AsmPrinter.h
>  include/llvm/CodeGen/MachineInstr.h
>  include/llvm/CodeGen/SelectionDAG.h
>  include/llvm/IR/DIBuilder.h
>  include/llvm/IR/DebugInfo.h
>  lib/CodeGen/AsmPrinter/AsmPrinterDwarf.cpp
>  lib/CodeGen/AsmPrinter/DwarfDebug.cpp
>  lib/CodeGen/AsmPrinter/DwarfDebug.h
>  lib/CodeGen/AsmPrinter/DwarfUnit.cpp
>  lib/CodeGen/SelectionDAG/InstrEmitter.cpp
>  lib/CodeGen/SelectionDAG/LegalizeTypes.cpp
>  lib/CodeGen/SelectionDAG/SelectionDAG.cpp
>  lib/IR/DIBuilder.cpp
>  lib/IR/DebugInfo.cpp
>  lib/Transforms/Scalar/SROA.cpp
>  test/DebugInfo/X86/dbg-large-unsigned-const.ll
>  test/DebugInfo/X86/pieces-1.ll
>  test/DebugInfo/X86/sdagsplit-1.ll
>  test/DebugInfo/X86/sdagsplit-2.ll
>  test/DebugInfo/X86/sroasplit-1.ll
>  test/DebugInfo/X86/sroasplit-2.ll
> <D2680.7.patch>