[all-commits] [llvm/llvm-project] 088644: [Symbolizer] Support for Missing Line Numbers. (#8...

[Amit Kumar Pandey via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 0886440ef0ed0ad553522b731c841b81dc36944c
      https://github.com/llvm/llvm-project/commit/0886440ef0ed0ad553522b731c841b81dc36944c
  Author: Amit Kumar Pandey <137622562+ampandey-1995 at users.noreply.github.com>
  Date:   2024-08-05 (Mon, 05 Aug 2024)

  Changed paths:
    M lld/Common/DWARF.cpp
    M llvm/docs/CommandGuide/llvm-symbolizer.rst
    M llvm/include/llvm/DebugInfo/DIContext.h
    M llvm/include/llvm/DebugInfo/DWARF/DWARFDebugLine.h
    M llvm/include/llvm/DebugInfo/Symbolize/Symbolize.h
    M llvm/lib/DebugInfo/DWARF/DWARFContext.cpp
    M llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp
    M llvm/lib/DebugInfo/Symbolize/DIPrinter.cpp
    M llvm/lib/DebugInfo/Symbolize/Symbolize.cpp
    A llvm/test/tools/llvm-symbolizer/skip-line-zero.s
    M llvm/tools/llvm-symbolizer/Opts.td
    M llvm/tools/llvm-symbolizer/llvm-symbolizer.cpp

  Log Message:
  -----------
  [Symbolizer] Support for Missing Line Numbers. (#82240)

LLVM Symbolizer attempt to symbolize addresses of optimized binaries
reports missing line numbers for some cases. It maybe due to compiler
which sometimes cannot map an instruction to line number due to
optimizations. Symbolizer should handle those cases gracefully.

Adding an option '--skip-line-zero' to symbolizer so as to report the
nearest non-zero line number.

---------

Co-authored-by: Amit Pandey <amit.pandey at amd.com>



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