[all-commits] [llvm/llvm-project] 4f902d: [llvm-dwarfdump] Make --verify for .debug_names mu...

[Alexander Yermolovich via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 4f902d2425e59bd182390702de23d5cec3467fc2
      https://github.com/llvm/llvm-project/commit/4f902d2425e59bd182390702de23d5cec3467fc2
  Author: Alexander Yermolovich <43973793+ayermolo at users.noreply.github.com>
  Date:   2025-04-03 (Thu, 03 Apr 2025)

  Changed paths:
    M llvm/include/llvm/DebugInfo/DWARF/DWARFAcceleratorTable.h
    M llvm/include/llvm/DebugInfo/DWARF/DWARFVerifier.h
    M llvm/lib/DebugInfo/DWARF/DWARFVerifier.cpp
    M llvm/test/tools/llvm-dwarfdump/X86/debug-names-verify-completeness.s
    M llvm/tools/llvm-dwarfdump/llvm-dwarfdump.cpp

  Log Message:
  -----------
  [llvm-dwarfdump] Make --verify for .debug_names multithreaded. (#127281)

This PR makes verification of .debug_names acceleration table
multithreaded. In local testing it improves verification of clang
.debug_names from four minutes to under a minute.
This PR relies on a current mechanism of extracting DIEs into a vector. 
Future improvements can include creating API to extract one DIE at a
time, or grouping Entires into buckets by CUs and extracting before
parallel step.

Single Thread
4:12.37 real,   246.88 user,    3.54 sys,       0 amem,10232004 mmem
Multi Thread
0:49.40 real,   612.84 user,    515.73 sys,     0 amem, 11226292 mmem



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