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llvm / llvm-project / 9ef91677a4a2d4b017d2b96b8c89c2a9b648d6c3
commit9ef91677a4a2d4b017d2b96b8c89c2a9b648d6c3[log] [tgz]
authorQiongsi Wu <qiongsiwu@gmail.com>Fri Apr 18 10:52:39 2025 -0700
committerGitHub <noreply@github.com>Fri Apr 18 10:52:39 2025 -0700
treea87f3e62b6ab7593f3857e7f1677ffd8f8d0c6e6
parent733c250bd5b39db2fa0cd0e201730661da56cc87 [diff]
[clang][Dependency Scanning] Adding an API to Diagnose Invalid Negative Stat Cache Entries (#135703)

We have had numerous situations where the negatively stat cached paths
are invalidated during the build, and such invalidations lead to build
errors.

This PR adds an API to diagnose such cases.
`DependencyScanningFilesystemSharedCache::diagnoseNegativeStatCachedPaths`
allows users of the cache to ask the cache to examine all negatively
stat cached paths, and re-stat the paths using the passed-in file
system. If any re-stat succeeds, the API emits diagnostics.

rdar://149147920
3 files changed
tree: a87f3e62b6ab7593f3857e7f1677ffd8f8d0c6e6
  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.

Getting in touch

Join the LLVM Discourse forums, Discord chat, LLVM Office Hours or Regular sync-ups.

The LLVM project has adopted a code of conduct for participants to all modes of communication within the project.