[PATCH] D133003: [WIP][ELF] Parallelize relocation scanning

[Fangrui Song via Phabricator via llvm-commits]

MaskRay created this revision.
MaskRay added reviewers: andrewng, ikudrin, peter.smith.
Herald added subscribers: StephenFan, atanasyan, arichardson, sdardis, emaste.
Herald added a project: All.
MaskRay requested review of this revision.
Herald added a project: LLVM.
Herald added a subscriber: llvm-commits.

MIPS and PPC64 use global states for relocation scanning. Keep serial
scanning for now.

Speed-up with --threads=8:

- clang -DCMAKE_BUILD_TYPE=Release: 1.08x as fast
- chrome (default): 1.08x as fast


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D133003

Files:
  lld/ELF/Arch/AArch64.cpp
  lld/ELF/MapFile.cpp
  lld/ELF/Relocations.cpp
  lld/ELF/Symbols.cpp
  lld/ELF/Symbols.h
  lld/ELF/SyntheticSections.cpp
  lld/ELF/SyntheticSections.h
  lld/ELF/Writer.cpp
  lld/test/ELF/undef-multi.s
  lld/test/ELF/undef.s

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