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llvm / llvm-project / d929146b3fcd7bafe364a053355bfe35b5e1fdbf
commitd929146b3fcd7bafe364a053355bfe35b5e1fdbf[log] [tgz]
authorPaul Walker <paul.walker@arm.com>Thu Oct 30 10:46:37 2025 +0000
committerGitHub <noreply@github.com>Thu Oct 30 10:46:37 2025 +0000
tree71509b5b5ad9184259eb400281a6db76718f3500
parent838f643ebb4083b34ac4671541188754ac3b0c50 [diff]
[Clang][AArch64] Lower NEON vaddv/vminv/vmaxv builtins to llvm.vector.reduce intrinsics. (#165400)

This is the first step in removing some NEON reduction intrinsics that
duplicate the behaviour of their llvm.vector.reduce counterpart.

NOTE: The i8/i16 variants differ in that the NEON versions return an i32
result. However, this looks more about making their code generation
convenient with SelectionDAG disgarding the extra bits. This is only
relevant for the next phase because the Clang usage always truncate
their result, making llvm.vector.reduce a drop in replacement.
3 files changed
tree: 71509b5b5ad9184259eb400281a6db76718f3500
  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

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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.