Google Git
Sign in
llvm / llvm-project / 590bb3e8e63af0fb46eadf510761bd00e264c018
commit590bb3e8e63af0fb46eadf510761bd00e264c018[log] [tgz]
authorEli Friedman <efriedma@qti.qualcomm.com>Mon Nov 24 14:08:50 2025 -0800
committerGitHub <noreply@github.com>Mon Nov 24 14:08:50 2025 -0800
tree6eb900fa1a7ab91f0d04cabc1aa11de0e647208e
parent4650f8521d85a4dea310b47bd7edce9e0b73ecf0 [diff]
[AArch64] Improve host feature detection. (#160410)

SVE depends on a combination of host support and operating system
support. Sometimes those don't line up with detected host CPU name; make
sure SVE is disabled when it isn't available. Implement this for both
Windows and Linux. (We don't have a codepath for other operating
systems. If someone wants to implement this, it should be possible to
adapt fmv code from compiler-rt.)

While I'm here, also add support for detecting other Windows CPU
features.

For Windows, declare constants ourselves so the code builds on older
SDKs; we also do this in compiler-rt.
1 file changed
tree: 6eb900fa1a7ab91f0d04cabc1aa11de0e647208e
  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. libsycl/
  16. libunwind/
  17. lld/
  18. lldb/
  19. llvm/
  20. llvm-libgcc/
  21. mlir/
  22. offload/
  23. openmp/
  24. orc-rt/
  25. polly/
  26. runtimes/
  27. third-party/
  28. utils/
  29. .clang-format
  30. .clang-format-ignore
  31. .clang-tidy
  32. .git-blame-ignore-revs
  33. .gitattributes
  34. .gitignore
  35. .mailmap
  36. CODE_OF_CONDUCT.md
  37. CONTRIBUTING.md
  38. LICENSE.TXT
  39. pyproject.toml
  40. README.md
  41. SECURITY.md
README.md

The LLVM Compiler Infrastructure

OpenSSF Scorecard OpenSSF Best Practices libc++

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.