[PATCH] D70705: [DebugInfo]Support for debug_macinfo.dwo section in llvm and llvm-dwarfdump.

[Sourabh Singh Tomar via Phabricator via llvm-commits]

SouraVX created this revision.
SouraVX added reviewers: probinson, dblaikie, aprantl, jini.susan.george, alok.
SouraVX added projects: debug-info, LLVM.
Herald added subscribers: llvm-commits, hiraditya.

This patch adds support for debug_macinfo.dwo section[pre-standardized] to llvm and llvm-dwarfdump.

This is the first patch in direction of debug info WRT to macros.

- This was necessary step forward in direction of debug info WRT to macros. macros section could be huge, so transferring this completely to dwo file reduce the size of executable + GDB also supports this style[loading macinfo.dwo section from dwo file].
- This contains redundancies and require a lot cleanup, So I would like to have some initial thoughts on this.
- Furthermore, once both macinfo /macinfo.dwo are set up, will try construct  DWARF5 macro/macro.dwo on top of this infra, perhaps share/Reuse some common code.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D70705

Files:
  llvm/include/llvm/DebugInfo/DWARF/DWARFContext.h
  llvm/include/llvm/DebugInfo/DWARF/DWARFObject.h
  llvm/include/llvm/MC/MCObjectFileInfo.h
  llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
  llvm/lib/CodeGen/AsmPrinter/DwarfDebug.h
  llvm/lib/DebugInfo/DWARF/DWARFContext.cpp
  llvm/lib/MC/MCObjectFileInfo.cpp
  llvm/test/DebugInfo/Inputs/dwarfdump-macro.dwo
  llvm/test/DebugInfo/debugmacinfo-dwo.test

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