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llvm / llvm-project / 704fc6542cf171c603bd387663a2de3a3fa9c4ff
commit704fc6542cf171c603bd387663a2de3a3fa9c4ff[log] [tgz]
authorCraig Topper <craig.topper@sifive.com>Mon Apr 21 13:49:49 2025 -0700
committerGitHub <noreply@github.com>Mon Apr 21 13:49:49 2025 -0700
tree0a28e7381a777b3d537de3e16f3df4e353dea743
parent863ead29e92de800fe50e56958b6eba6ede023e9 [diff]
[SelectionDAG] Prefer to use ATOMIC_LOAD extension type over getExtendForAtomicOps() in computeKnownBits/ComputeNumSignBits. (#136600)

If an ATOMIC_LOAD has ZEXTLOAD/SEXTLOAD extension type we should trust
that over getExtendForAtomicOps().

SystemZ is the only target that uses setAtomicLoadExtAction and they
return ANY_EXTEND from getExtendForAtomicOps(). So I'm not sure there's
a way to get a contradiction currently.

Note, type legalization uses getExtendForAtomicOps() when promoting
ATOMIC_LOAD so we may not need to check getExtendForAtomicOps() for
ATOMIC_LOAD. I have not done much investigating of this.
1 file changed
tree: 0a28e7381a777b3d537de3e16f3df4e353dea743
  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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