[PATCH] D44054: [DWARFv5] Emit file 0 to the line table.

[Paul Robinson via Phabricator via llvm-commits]

probinson created this revision.
probinson added reviewers: dblaikie, aprantl.
probinson added a project: debug-info.
Herald added subscribers: JDevlieghere, hiraditya, kristof.beyls, eraman, arichardson, javed.absar, emaste.

DWARF v5 specifies that the root file (also given in the DW_AT_name attribute
of the compilation unit DIE) should be emitted explicitly to the line  table's list of files.
This makes the line table more independent of the .debug_info section.

I am a bit nonplussed that more directory names are appearing in the .file directives now, which required more test changes than I expected, but I can't see that being harmful.


https://reviews.llvm.org/D44054

Files:
  llvm/include/llvm/MC/MCContext.h
  llvm/include/llvm/MC/MCDwarf.h
  llvm/include/llvm/MC/MCStreamer.h
  llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
  llvm/lib/CodeGen/AsmPrinter/DwarfUnit.cpp
  llvm/lib/CodeGen/AsmPrinter/DwarfUnit.h
  llvm/lib/MC/MCAsmStreamer.cpp
  llvm/lib/MC/MCDwarf.cpp
  llvm/lib/MC/MCParser/AsmParser.cpp
  llvm/lib/MC/MCStreamer.cpp
  llvm/test/CodeGen/Generic/dwarf-md5.ll
  llvm/test/CodeGen/Generic/dwarf-source.ll
  llvm/test/DebugInfo/X86/dbg-file-name.ll
  llvm/test/DebugInfo/X86/inline-asm-locs.ll
  llvm/test/MC/ARM/dwarf-asm-multiple-sections.s
  llvm/test/MC/ELF/debug-file-options.s
  llvm/test/MC/ELF/debug-md5.s
  llvm/test/MC/ELF/debug-source.s
  llvm/test/MC/ELF/dwarf-file0.s
  llvm/tools/llvm-mc/llvm-mc.cpp

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