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llvm / llvm-project / 07bc54bf4554398b199f4dc849e5193b98422f23
commit07bc54bf4554398b199f4dc849e5193b98422f23[log] [tgz]
authorMartin Storsjö <martin@martin.st>Mon May 05 15:06:27 2025 +0300
committerGitHub <noreply@github.com>Mon May 05 15:06:27 2025 +0300
treee0cbafe42774739bcfb5ce2749bf2aa181a790b8
parenta94e56095808f4784afcf8e50819ba594c5e8219 [diff]
[DWARFLinkerParallel] Fix incorrect uses of compare_exchange_weak (#138129)

The documentation for compare_exchange_weak says that it is allowed to
spuriously fail. If compare_exchange_weak is called in a loop, spurious
failures usually are benign - but in these cases, a spurious failure
would give incorrect behaviour.

E.g. in TypePool::getOrCreateTypeEntryBody, we assume that if the
compare_exchange call returned false, we had been preempted by another
thread and that DIE is non-null.

This fixes running the dsymutil tests on Windows on aarch64 (built with
a mingw toolchain with libc++).
3 files changed
tree: e0cbafe42774739bcfb5ce2749bf2aa181a790b8
  1. .ci/
  2. .github/
  3. bolt/
  4. clang/
  5. clang-tools-extra/
  6. cmake/
  7. compiler-rt/
  8. cross-project-tests/
  9. flang/
  10. flang-rt/
  11. libc/
  12. libclc/
  13. libcxx/
  14. libcxxabi/
  15. libunwind/
  16. lld/
  17. lldb/
  18. llvm/
  19. llvm-libgcc/
  20. mlir/
  21. offload/
  22. openmp/
  23. polly/
  24. pstl/
  25. runtimes/
  26. third-party/
  27. utils/
  28. .clang-format
  29. .clang-format-ignore
  30. .clang-tidy
  31. .git-blame-ignore-revs
  32. .gitattributes
  33. .gitignore
  34. .mailmap
  35. CODE_OF_CONDUCT.md
  36. CONTRIBUTING.md
  37. LICENSE.TXT
  38. pyproject.toml
  39. README.md
  40. SECURITY.md
README.md

The LLVM Compiler Infrastructure

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Welcome to the LLVM project!

This repository contains the source code for LLVM, a toolkit for the construction of highly optimized compilers, optimizers, and run-time environments.

The LLVM project has multiple components. The core of the project is itself called “LLVM”. This contains all of the tools, libraries, and header files needed to process intermediate representations and convert them into object files. Tools include an assembler, disassembler, bitcode analyzer, and bitcode optimizer.

C-like languages use the Clang frontend. This component compiles C, C++, Objective-C, and Objective-C++ code into LLVM bitcode -- and from there into object files, using LLVM.

Other components include: the libc++ C++ standard library, the LLD linker, and more.

Getting the Source Code and Building LLVM

Consult the Getting Started with LLVM page for information on building and running LLVM.

For information on how to contribute to the LLVM project, please take a look at the Contributing to LLVM guide.

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