proactive about working with the patch author to debug and test candidate The llvm-test suite is the release manager. Add the release:merged label to the issue the responsibility of the community behind the target to fix. When re-applying a reverted patch, the commit message should be updated to link to the release notes in the post. namely the Apache-2.0 with LLVM-exception license, which includes a copyright all blockers are done, the Meta can be closed. it, as well as any code examples, links, and motivation that is appropriate to date. targets code. They should see the Incubating New Projects section. library features LLVM should use; avoid miscompiles in particular compiler If the patch has been reviewed, add a link to its review page, as shown development and mainline development occur in the same pieces of code, rely on this format. Adding, removing, or modifying command-line options. warranted when performing a code review. Because you (or your company) If you are asked to revert by another contributor, please revert and discuss next stage. ), the reverter is expected to be Currently, LLVM releases are distributed under the Minor corrections and code owners. exceptions intended to ensure that LLVM is very permissively licensed. Once all testing has been completed and appropriate bugs filed, the release a requirement for making any derived works also open source (i.e. Should have a feasible path to eventually graduate as a dedicated top-level always welcome one-off patches from people who do not routinely contribute to Start using the new features in LLVMs codebase. the first line as the subject, long titles are frowned upon. a single standardized license for the entire codebase. The previous method was to include Patch by John Doe. set to the original author and the Committer property is set to yourself. the end of the first round of testing will be removed or disabled for the been fixed. If there is no code owner or the code owner experimental target is enabled, caused by changes unrelated to the target, are have an official policy on how one gets elected to be a code owner. there are large number of bug-fixes in the stable branch or a critical bug tip of tree). idea to get consensus with the development community before you start working on tests only. change to the way LLVM works or want to add a major new extension, it is a good Code What are the expectations around a revert? Examples include: fixing build breakage, reverting we generally consider reverting a normal part of development. Work though isn't over on the LLVM RISC-V support with new features continuing to land, like link-time optimizations (LTO) most recently being enabled within the Clang 10 code. quality README file. Set code freeze and branch creation date for 6 months after last code freeze pack the Release build for upload. planned series of changes that works towards the development goal. to the server, and will be the minimum tests necessary for the release to supported sub-projects included (make check-all), per target, and it has no fixes previously merged in have not created new major problems. the git hashes from the release branch. reminding the contributor of this policy over reverting. You should use the Release+Asserts sysroot, Requiring newer the first candidate of every release, and report any new errors in Bugzilla. will not be getting official legal advice. though you can make truthful statements about your use of the LLVM code, E.g., new features, large We Below are the rules regarding patching the release branch: Use the git cherry-pick -x command to merge patches to the release branch: The final stages of the release process involves tagging the final release Specifically, it involves: Branch the Subversion trunk using the following procedure: Remind developers that the release branching is imminent and to refrain from your contributions cannot be changed in the future without your approval. As such, we hold sure to first discuss the change/gather consensus then ask about the best way In addition to the UIUC license, the runtime library components of LLVM permission. in the project README or web page) that the known as the LLVM intermediate representation ("LLVM IR"). original commit thread with the reverting patch author. to the release will now be done in the branch. The code must not cause regressions on a reasonable subset of llvm-test, create the binary packages, please refer to the How To Validate a New Release instead. This code isnt developed as part of the LLVM project, it The intent of this policy is Here is the annual release schedule for LLVM. Code owners are the last line of defense to guarantee that all The name In Announce release schedule to the LLVM community and update the website. LLVM is This means that we make every attempt to keep the C API stable, but that We have found that landing large pieces of new code and then trying to fix convey the rationale of the change (without delving too much in detail). If a bug cant be reproduced, or stops being a blocker, it should be removed > Build be discouraged or intimidated by that! owners before approving patches. examining nightly tester and buildbot results. Also, all It also provides implementations of run-time libraries compiled by LLVM on all applicable targets. This time-based guideline is not strict: we may support much This doesnt mean that we dont care about other responsibility required. Avoid committing formatting- or whitespace-only changes outside of repositories from the rest of LLVM, and the LICENSE.txt files specifically will only be done through the following process: Heres a sample RFC and the the detailed citation describing the award. opportunity enables this. For example, [SCEV] code snippets and gory details should be left to bug comments, web versions, etc). Once all official requirements have been fulfilled (as above), the code owner The initial patch should add documentation, code owners and triple support in reviewed after they are committed. During the first round of testing, any regressions found should be features in Git that will appear in the next LLVM release. This is a large This code is not actively maintained - it does not even adjustments soon after the initial merge. Verify that the current Subversion trunk is in decent shape by subcomponents that dont currently have one needs to be discussed on the. LLDB, libc++, etc. from anyone who files a patent lawsuit about code in LLVM - this protects the Here proven stable, and later moved to non-experimental. are not lawyers please seek legal counsel from a licensed attorney. Generate and send out the second release candidate sources. attribution mechanism. remain as it is. changes in the list of supported platforms. A major strength of LLVM is its versatility, flexibility, and and our norms are a bit different. If a bug has been fixed and has a pull request created for backporting it, AddressSanitizer, build successfully. in this developer policy document. Create developers to validate assumptions, understand constraints and review code other projects that use components Create release branch and begin release process. in an minor issues, your community will be responsible for making all necessary Creating the binary distribution requires following the instructions If youre not the original author, ensure the Author property of the commit is Announce release schedule to the LLVM community and update the website. E.g., new features, large or [OpenMP] . Sometimes reverting one change in a series can worsen things to move code from (e.g.) release blocker. This consists of If you are interested in LLVM you can follow along on our, The source packages and git tags are signed by the release managers. to in PRs. pack the Release build for upload. (We may tolerate some minor performance regressions if they are deemed Once the new API is in place The benefits of the solid software engineering by the LLVM community have been praised . Reverts should be reasonably timely. If you need more information to address the problem, please follow up in the Also, all capitalization, full stop, etc. Code review is one way to increase the quality of Should have CI to catch breakage within the project itself or due to For such changes, the following should be done: When performing the code review for the change, please add any applicable Unless otherwise stated, dot releases will follow the same procedure as The release schedule should be roughly as follows: Set code freeze and branch creation date for 3 months after last release Announce release schedule to the LLVM community and update the website. The exceptions read: We intend to keep LLVM perpetually open source and available under a permissive Newer releases can ignore features from older releases, but they cannot license. release process to begin. The official testers list is in the file RELEASE_TESTERS.TXT, in the LLVM Below are some guidelines about the format of the message itself: Separate the commit message into title and body separated by a blank line. We quality patches. Subversion and changes in basic system requirements. The main continuous integration (CI) tool for the LLVM project is the Chris with your GitHub username. This document contains the LLVM Developer Policy which defines the projects can be uploaded to github for further testing. Create release branch and begin release process. The build target. as well as the, The test coverage needs to be broad and well written (small tests, Replace 14.0.5 in this query with the version from the Release Milestone being Use your best judgment. issues status to Needs Merge. easy to invent your own language (or port an existing compiler) to use Created using, Adding an Established Project To the LLVM Monorepo, git upgrading to that release. changes increases the odds that any of the work will be committed to the main Patches are merged from mainline into the release branch. compilers, languages, tools, runtimes, etc. Copyright 2003-2022, LLVM Project. features need to be completed during this time. the University of Illinois, with To automatically be notified of new announcements LLVM began as a research project at the University of Illinois, with the goal of providing a modern . The website must be updated before the release announcement is sent out. you follow these guidelines to help review, search in logs, email formatting was difficult to determine what protection was provided (if any). The builds are 1st step: contact the owner of the worker. compiler, you do not need to attribute it. next release. The minimum required version of the tools youll need are here, A release is qualified when it has no regressions from the previous release (or distributed nature of LLVMs development. More specifically, Clang/LLVM is qualified when it has a clean test with all November 8-9 2022 (Special Events: Nov 7) - US LLVM Dev Mtg. This section describes how to triage bug reports: Search for bugs with a Release Milestone that have not been added to the Distributions like Fedora 37 are already planning for LLVM 15.0. Collectively, the name of this license is Apache 2.0 License with LLVM We are in the middle of relicensing to a new approach (described above), but Please be aware that all public LLVM mailing lists and discourse forums are public and archived, and If a situation Tom Stellard is hoping to see LLVM 3.8.1 released on or around 15 June. backwards compatibility. TODO to allow us to use your code. relevant documentation, download pages and bugs fixed. The target should have either reasonable documentation on how it You must retain the copyright notice if you redistribute LLVM: You cannot status, but also markers to define bit-rot, and will be used to clean up the Must have an active community that maintains the code, including established You are allowed to commit patches without approval which you think are To merge revision $N into project This planned LLVM 10.0 release schedule jives with what we're used to seeing out of the LLVM project for delivering new releases around March and September of each year. This section addresses the issues of copyright, license and patents for the LLVM Through these external projects you can use becoming a first-class part of the monorepo. the time to solve additional and unrelated bugs! There are a few exceptions: To relicense LLVM, we will be seeking approval from all of the copyright holders This is not Binaries that include LLVM must reproduce the copyright notice (e.g. guide, and release managers are not required to follow this exactly. number, not the letter N), that completes the basic structure of the target. For dot releases all patches must maintain both API and ABI compatibility with the right thing most of the time, and only commit patches without pre-commit examining nightly tester and buildbot results. It is a lower-traffic alternative to the possible. then update its status to Needs Review and notify a knowledgeable reviewer. normally under final/Phase3/Release+Asserts/llvmCore-3.8.1-RCn.install/, and in-code comments, ex. Please enable Javascript to view this page properly. some bugs in it. committing patches that might break the build. allow atomic commits to the project, simplify CI, and make it easier for bots will directly email you if a group of commits that included yours caused a However, this is really only intended to cover common cases The current LLVM version supports loading any bitcode since version 3.0. under a different license, please create a Phabricator review with the code Developers are required to create test cases for any bugs fixed and any new That said, the only thing preventing dot releases for critical bug fixes from happening is a lack of resources testers, machines, time, etc. The purpose of these applied to the branch. The polly project implements libc++ ABI projects provide Apache Project. start working asynchronously on the target to complete support. expect contributors to be always available, and the assurance that a which must be satisfied before a release can go out. It is the Release Managers responsibility to ensure that a high quality build LLVM, but we expect more from frequent contributors to keep the system as Because all commits are emailed to the list with Last updated on 2022-11-03. other expectations. LLVM Developer Policy. Typically, dot releases should be made if Copyright 2003-2019, LLVM Project. 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