Google Git
Sign in
android / platform / external / opencl / llvm-project / 1ab0e7dd60e2
commit1ab0e7dd60e26ac7c7fc64a273485522f5c5ba02[log] [tgz]
authorJiachen (Yangyang) Wang <130888597+WanderingAura@users.noreply.github.com>Thu Jun 19 09:09:19 2025 +0100
committerGitHub <noreply@github.com>Thu Jun 19 10:09:19 2025 +0200
treeec961e0abd63a0bc562421ab6d4f6b50cbe2ef4a
parent650b451d0065c8ea6a1f87e7fdc6d07648729549 [diff]
[LICM] Hoisting writeonly calls (#143799)

Adds support for hoisting `writeonly` calls in LICM.

This patch adds a missing optimization that allows hoisting of
`writeonly` function calls out of loops when it is safe to do so.
Previously, such calls were conservatively retained inside the loop
body, and the redundant calls were only reduced through unrolling,
relying on target-dependent heuristics.

Closes #143267

Testing:
- Modified previously negative tests for hoisting writeonly calls to be
instead positive
- Added test cases for hoisting of two writeonly calls where the
pointers do/do not alias
- Added a test case for not argmemonly writeonly calls.
3 files changed
tree: ec961e0abd63a0bc562421ab6d4f6b50cbe2ef4a
  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

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.