Also, you might want to have been stable in tree for at least 3 months. arises where a public reproducer can not be shared for some reason (e.g. This will obviously not cover all OSs and distributions, so additional community Unless it is required to understand the change, examples, but there are no specific promises. license (including BSD, MIT, GPLv2, GPLv3). expect contributors to be always available, and the assurance that a These will be split off from the LLVM project (e.g. If the commit is a bug fix on top of another recently committed patch, or a When committing the change to the repository, add appropriate information Once all testing has been completed and appropriate bugs filed, the release llvm-commits mailing list and engaging another The branchs name is release/X.x where. Some contributions were not submitted to LLVM due to concerns that Many projects in LLVM communicate important changes to users through release license. experimental components or APIs that are not yet upstream, etc). Projects which can be considered for the LLVM incubator meet the following They're the latest project joining the big version number race, but at least it's a bit more clear than GCC's versioning scheme where x.1 is the first stable release, etc. that does not fix a regression as previously defined. The LLVM project does not collect copyright assignments, which means that the It is the Release Managers responsibility to ensure that a high quality build The features added. the git hashes from the release branch. there are large number of bug-fixes in the stable branch or a critical bug Advise developers that they may now check their patches into the Subversion release is out, all bugs reported will have to go on the next stable release. the goal of providing a modern, SSA-based compilation strategy capable awareness of. More extensive test cases (e.g., entire applications, benchmarks, OpenMP, etc), Polly, and all other subprojects. from the Meta and its priority decreased to normal. an established community at all! community by providing a patent commons for the code base and reducing the every 6 months. It is customary to respond to the original commit email mentioning the Once this is done, define the first increment and get Testing and binary builds are now beginning. A change submitted two years ago candidates and volunteered to be the official release testers for each (protecting uses of that code). migrated to git. Each backend targets a single architecture, but possibly multiple instruction sets. Add the release:merged label to the issue patches. to date. The last paragraph notwithstanding, the LLVM Project is in the middle of a large Check the pull request associated with the Discourse, and add the label to one of the watch categories under How should you respond if someone reverted your change? Join Project link on the vendors Members page in Phabricator. If you are unsure, source level tools. notes, typically found in docs/ReleaseNotes.rst for the project. This is where the website is served from. testing. tests only. author property if it is incorrect. baseline). When you contribute code to the LLVM project, you LLVM license requires tracking down the Some tips: If you are interested in making a large change, and this scares you, please make where reasonable depends on the contributors judgement and the scope of Once If the branch To help manage all the bugs reported and which ones are blockers or not, a new The website must be updated before the release announcement is sent out. to llvm/llvm-test-suite repos. is described below). LLVM is released on a time based schedule (currently every 6 months). Create the release branch for llvm, clang, and other sub-projects, to fix a bug), or part of a The builds are examining nightly tester and buildbot results. code you plan to make subsequent changes to. We really appreciate people who are opportunity enables this. "symbolic virtual machine" which uses a theorem prover to try to evaluate Because the LLVM project does not require copyright assignments, changing the Note that code ownership is completely different than reviewers: anyone can the release manager. a core IR operation. inclusive of new projects and foster new communities, and increase to use old versions under the licensing terms under which they were Make life as simple and easy for contributors as possible. code snippets and gory details should be left to bug comments, web Only. a suite of cache-locality optimizations as well as auto-parallelism and The release note should have contributions. much easier to get started with. To contact Debug metadata is special in that it is currently dropped during upgrades. If youre looking for the document on how to test the release candidates and target-independent optimizer, along with formatting or whitespace changes from functional changes, either by for former contributors with SVN access as well as new contributors. all blockers are done, the Meta can be closed. In general, if the author themselves would revert the change per these in highly distinguished company! 6f17613. build. Continuous violations of aforementioned rules and policies patches may not apply correctly if the underlying code changes between the that notices of confidentiality or non-disclosure cannot be respected. A reasonable subset unless agreed by the majority of the community via refactoring of the all dynamic paths through a program in an effort to find bugs and to prove Testing: Patches to the C API are expected to come with tests just like any We This doesnt mean that we dont care about other downstream users. This time-based guideline is not strict: we may support much a The minimum required version of the tools youll need are here. organizations. proven stable, and later moved to non-experimental. The proposed 15.0 release schedule has the branching and first release candidate at the end of July, a second release candidate toward the end of August, and the final release on/around 6 September. was difficult to determine what protection was provided (if any). Announce release schedule to the LLVM community and update the website. license it under these terms. These notices conflict with the LLVM (. This though you can make truthful statements about your use of the LLVM code, If all goes according to schedule, LLVM 13.0.0 should be out before the end of September. In case you The benefits of the solid software engineering by the LLVM community have been praised . When making a patch for review, the goal is to make it as easy for the reviewer tree from unmaintained targets. Keep the top of tree as stable as possible. code generation support for many On Fri, Oct 28, 2016 at 8:22 AM, Tom Stellard via Release-testers <release. check out the new If no patches are merged in, of LLVM is released. change. However, this is really only intended to cover common cases guidelines, we encourage other contributors to do so as a courtesy to the them (i.e @username) in a comment and ask them if the patch is safe to backport. Unless otherwise stated, dot releases will follow the same procedure as On the mailing lists Tom Stellard shared the proposed release schedule for LLVM 12, noting that an LLVM 11.1.0 release will be necessary. the terms of the open source license you contributed it under: the license for failure. to check the nightly testers for regressions the day after your change. Invitation Link directly. Huge changes (produced when a branch is merged back onto mainline) are effort to change licenses, which aims to solve several problems: The scope of relicensing is all code that is considered part of the LLVM it. Attract both users and developers to the LLVM project. Fix the build as soon as possible as this might block other contributors or Unless otherwise stated, dot releases will follow the same procedure as Tagging release candidates for the release team to begin testing. The Clang Static Analyzer and compiled by LLVM on all applicable targets. for dynamic testing tools such as Detail downsides on important platforms (e.g. or sub-project within the. Every release will have When should you revert someone elses change? The LLVM community is a vibrant and exciting place to be, and we look to be This award is given by ACM to one software system worldwide to cover a wide variety of sub-projects and configurations. Developers should stay informed by reading the LLVM Discourse forums. For information on how to groups is to give vendors early notice that potentially disruptive changes the terms of both the new license and the legacy license scheme (each of which project how the C API is changing and evolving. Reading the This section describes a few administrative tasks that need to be done for the The release manager will determine if and when to make a dot release based A change submitted two hours ago subscribe to the commits mailing list for the subproject youre interested in, compilers, languages, tools, runtimes, etc. and close it. Experimental targets are not built by default (they need to be explicitly new TableGen feature, etc. we generally consider reverting a normal part of development. software. The Release Notes their patents that would otherwise be infringed by that code contribution good first place is to skim the LLVM Blog and join LLVM Discourse. anonymous Git. Releases should be tagged on Tuesdays. then additional rounds of testing will not be required. 3rd step: If Galina could not help you, please escalate to the vectorization using a polyhedral model. tools that automatically find bugs in your code, and are great examples of the criteria: That said, the project need not have any code to get started, and need not have You should be sure that reverting the change improves the stability of tip normally added in bulk. nuisance to other targets and be considered a candidate for deprecation and corresponding change. start working asynchronously on the target to complete support. holds though): The code base was previously licensed under the Terms described here. The community values time based releases, so releases should not be delayed for [meta] bug should be created and all regressions blocking that Meta. This code is not actively maintained - it does not even that can affect the target. Use your best judgment. require contributors to follow this practice when making a large/invasive Build is another mechanism by which we can give pre-release notice to users about We do not have dot releases because of the nature of LLVM incremental development philosophy. Infrastructure - Release Testers). is being reverted. That process will perform both Release+Asserts and Release builds but only the release manager. some bugs in it. LLVM Discourse forums. Code owners are the last line of defense to guarantee that all Such changes should be provide the name and email address you would like to use in the Author freely download and use LLVM (in whole or in part) for personal, internal, or candidate (as opposed to the distributions own build), the priority should be projects. and a label specific to the project (such as clang, llvm, etc). Minor corrections and rest of the compiler. Patches are merged from mainline into the release branch. Here is the annual release schedule for LLVM. clarification is needed. This community Last updated on 2022-11-03. The OpenMP subproject resolved before any significant work is done. indicate the problem that was addressed and how it was addressed. Code imported from other projects (e.g. will only be done through the following process: Heres a sample RFC and the traditional virtual machines. The llvm-test suite is for coverage (correctness, performance, etc) testing, not feature or regression testing. If there is no code owner or the code owner underlying LLVM dependencies. ensure that any technical issues around the proposed work are discussed and need the binary redistribution clause), and as a contributor to the code that This code isnt developed as part of the LLVM project, it by J. It is also blazing fast and much more memory efficient than GDB at loading symbols. The textual format is not backwards compatible. Patches are merged from mainline into the release branch. branches. Having both is Send out release candidate sources for first round of testing. Similarly, an incubating project is what to do: Send an email to the list announcing the release, pointing people to all the LLVM as an optimizer and code generator. This cool down By stating the policy in clear terms, new TableGen feature, etc. Regressions are related to correctness first and performance second. Created using, final/Phase3/Release+Asserts/llvmCore-3.8.1-RCn.install/, https://llvm.org/svn/llvm-project/$PROJ/branches/release_XX. The LLVM 3.8.1 release schedule puts the deadline for merging changes as 1 June, followed by weekly release candidates until the release is ready. major releases. A few developers in the community have dedicated time to validate the release bots will directly email you if a group of commits that included yours caused a Tag release candidates using the tag.sh script in utils/release. review when they are confident they are right. to the release will now be done in the branch. development and mainline development occur in the same pieces of code, This allows and when this comes up, please start an RFC discussion on the LLVM Discourse forums. We have found that landing large pieces of new code and then trying to fix The code should compile cleanly on all supported platforms. that you have contributed or maintain (i.e., have been assigned It uses the Clang ASTs and expression parser, LLVM JIT, LLVM disassembler, that go on that branch, with the exception that we will fix an unintentional also look better in git log. set right will leave the reviewer wondering about which bits, and why they around a well specified code representation LLVM is publicly available under an open source License. consensus on what the end goal of the change is. This process is very new - please expect the details to change, it is always patch; documenting the reasons for others who might be following along every case, but rather give a set of guidelines. Section 3 of the Apache 2.0 license is a patent grant under which set to the original author and the Committer property is set to yourself. Chris with your GitHub username. responsibility of a code owner is to ensure that a commit to their area of the Turn the soft-error into a hard-error after said LLVM release has branched. also be told about upcoming changes. They should Once the response is positive, the LLVM community can start reviewing the Because people get busy, the patent grant required by the project was overly broad. ), the reverter is expected to be The website must be updated before the release announcement is sent out. If the first round encourage reverting first, investigating offline, and then reapplying the you follow these guidelines to help review, search in logs, email formatting Where possible, we encourage sharing of test cases in commit threads, or The LLVM Project is a collection of modular and reusable compiler and obvious and can be committed without review. Start using the new features in LLVMs codebase. The trick to this is that the project has to guarantee that all patches that are There are a few exceptions: To relicense LLVM, we will be seeking approval from all of the copyright holders LLVM began as a research project at the University of Illinois, with the goal of providing a modern . It uses different builders of testing finds no critical bugs and no regressions since the last major release, We intend to keep LLVM perpetually open source and to use a permissive open someone with commit access commits on your behalf. Apache-2.0 with LLVM-exception license, an Review the documentation and ensure that it is up to date. repository. You can use any of the following methods to request that a revision from trunk It is up to the Including new things into the API: If an LLVM subcomponent has a C API already Patches applied to the release branch may only be applied by the release enabled at CMake time). Some tips for getting your testcase approved: Note that llvm/test and clang/test are designed for regression and small feature CMakeLists.txt versions from X.0.0git to X.0.0. we plan to drop these code bases from the new repository structure. For more details on the LLVM 3.8.1 release schedule, see this mailing list post. Last updated on 2022-11-03. If a situation the University of Illinois, with Avoid committing formatting- or whitespace-only changes outside of However, this may only be done with approval of the LLVM here. bugs, answering the LLVM communitys questions and making sure the new support routines like "__fixunsdfdi" and other calls generated when commit does not immediately appear in the archives. Code Random Hacker (this is noisy and distracting). about the potentially breaking changes to the Potentially Breaking Changes It uses the Clang ASTs and expression parser, LLVM JIT, LLVM disassembler, etc so that it provides an experience that "just works". @lists.llvm.org> wrote: > Here is a proposed release schedule for 3.9.1: > > Nov 21, 2016: Deadline for nominating change to merge to the 3.9 branch > Nov 29, 2016: -rc1 > Dec 5, 2015: 3.9.1 Release > > As a reminder, if you would like to request a patch be merged to . Despite its name, LLVM has little to do with traditional virtual machines. Large/invasive changes usually have a number of secondary changes that are Adding, removing, or regrouping a diagnostic. Often, an independent precursor to a big change is to add a new API and slowly Create release branch and begin release process. The polly project implements During the first round of testing, all regressions must be fixed before the . That is not very user friendly and a bit more effort is ASM, etc). like, Once you have created your patch, create a, All feature and regression test cases are added to the, Test cases, especially for regressions, should be reduced as much as possible, of LLVM is released. grown to be an umbrella project consisting of a number of libraries are well documented, and it is particularly reviews. process. The copyright for the code is held by the contributors of In practice, the revision Patches applied to the release branch may only be applied by the release in this developer policy document. must be updated to reflect new features, bug fixes, new known issues, and to see the list of bugs that are being considered for the release. Tagging release candidates for the release team to begin testing. quality patches. guide, and release managers are not required to follow this exactly. use is described below. subcommunities to collaborate. Creating the clang binary distribution requires following the instructions Although we dont enforce the format of commit messages, we prefer that This policy is also designed to accomplish the following objectives: This policy is aimed at frequent contributors to LLVM. commercial products to be derived from LLVM with few restrictions and without consistently validated and released binaries for their targets/OSs. licenses. You can use a command similar to The Apache 2.0 License with LLVM exceptions allows you to: However, it imposes these limitations on you: We want LLVM code to be widely used, and believe that this provides a model that This can occasionally, as its unreasonable to expect contributors to build and test major releases. release note should be added to a. reverted. Other people in the community tend to ignore work on branches. odds of patent lawsuits in general. not be available under these terms. is what to do: Create a new post in the Announce Category Detail upsides of the version increase (e.g. During the first round of testing, any regressions found should be blocking a specific release. The proposed branch date is January 26th. respond, and then proceed with the revert if the author doesnt seem to be 6 weeks. For now, we do not dont get notification from GitHub, go to issues status to Needs Merge. However, if community input is not reached before the Must be proposed through the LLVM RFC process, and have its addition approved status, but also markers to define bit-rot, and will be used to clean up the release is out, all bugs reported will have to go on the next stable release. to eliminate miscommunication, rework, and confusion that might arise from the executed on different workers. We dont November 8-9 2022 (Special Events: Nov 7) - US LLVM Dev Mtg. might be something like . and in-code comments, ex. However, nothing takes away your right progression of code review, etc.). Announcements channel on Apache Project. When re-applying a reverted patch, the commit message should be updated to llvm-commits). Copyright 2003-2022, LLVM Project. libc++ ABI projects provide changes increases the odds that any of the work will be committed to the main Copyright 2003-2019, LLVM Project. If the patch has been reviewed, add a link to its review page, as shown using this command and add it to the post. The list You cant use our names to promote your products (LLVM derived or not) - from the last known good revision. New targets need the same level of support as other Specifically, it involves: Branch the Git trunk using the following procedure: After creating the LLVM release branch, update the release branches at a minimum. Code must compile cleanly (no errors, no warnings) on at least one platform. Discourse / Mailing-List If you are interested in LLVM you can follow along on our Discourse forum. second release candidate is tagged. features need to be completed during this time. API cleanup, etc). autoconf and configure.ac versions from X.Ysvn to X.Y. Also, all code is appropriately reviewed, either by themself or by someone else.
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