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CONTRIBUTING.md

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Contributing

License

Intel Project for LLVM* technology is licensed under the terms of the Apache License v2.0 with LLVM Exceptions license (LICENSE.txt) to ensure our ability to contribute this project to the LLVM project under the same license.

By contributing to this project, you agree to the Apache License v2.0 with LLVM Exceptions and copyright terms there in and release your contribution under these terms.

Contribution process

Development

NB: For any changes not related to DPC++, but rather to LLVM in general, it is strongly encouraged that you submit the patch to https://llvm.org/ directly. See LLVM contribution guidelines for more information.

  • Create a personal fork of the project on GitHub
    • For the DPC++ Compiler project, use sycl branch as baseline for your changes. See Get Started Guide.
  • Prepare your patch

    • follow LLVM coding standards

    • clang-format and clang-tidy tools can be integrated into your workflow to ensure formatting and stylistic compliance of your changes.

    • use

      ./clang/tools/clang-format/git-clang-format `git merge-base origin/sycl HEAD`

      to check the format of your current changes against the origin/sycl branch.

      • -f to also correct unstaged changes
      • --diff to only print the diff without applying
  • Build the project following Get Started Guide instructions.
  • Run regression tests - instructions.

Commit message

  • When writing your commit message, please make sure to follow LLVM developer policies on the subject.
  • For any DPC++-related commit, the [SYCL] tag should be present in the commit message title. To a reasonable extent, additional tags can be used to signify the component changed, e.g.: [PI], [CUDA], [Doc].

Review and acceptance testing

  • Create a pull request for your changes following Creating a pull request instructions.
  • CI will run a signed-off check as soon as your PR is created - see the check_pr CI action results.
  • CI will run several build and functional testing checks as soon as the PR is approved by an Intel representative.
    • A new approval is needed if the PR was updated (e.g. during code review).
  • Once the PR is approved and all checks have passed, the pull request is ready for merge.

Merge

Project maintainers merge pull requests using one of the following options:

  • [Rebase and merge] The preferable choice for PRs containing a single commit
  • [Squash and merge] Used when there are multiple commits in the PR
    • Squashing is done to make sure that the project is buildable on any commit
  • [Create a merge commit] Used for LLVM pull-down PRs to preserve hashes of the commits pulled from the LLVM community repository

*Other names and brands may be claimed as the property of others.