A home for compiler team planning documents, meeting minutes, and other such things. If you’re interested in learning about how rustc works – as well as advice on building the compiler, preparing a PR, and other similar topics – check out the rustc-dev-guide.
- Where to find us: We are primarily present on Zulip, though some of us also monitor Discord.
- Want to attend a meeting or follow along? See the “meeting calendar” section below.
- Looking for technical information about how the compiler works? Check out the rustc-dev-guide.
Our meeting calendar is publicly available from the following links:
- Web Link – use this to view the calendar or to import into Google Calendar
- ICS file, for use outside from google calendar – use this if you want to import into different calendar software
Unless otherwise noted, all our meetings are open to the public and held on Zulip, in the t-compiler/meetings stream. There are two main team-wide meetings that we hold on a regular basis. There are also a variety of working group meetings.
We have a weekly triage meeting to discuss and track regressions and urgent changes. This meeting is held on Zulip and open to anyone.
We also have a regular steering meeting where we discuss proposed designs, changes to our process, and other topics. The topics are scheduled at a planning meeting that occurs every four weeks.
- Have an idea? Click here to propose a topic to be scheduled by filing an issue with the correct template.
- To see the current scheduled meetings, check out the meeting calendar.
Much of the ongoing work and initiatives from the compiler team are performed by working groups. Working groups are a great way for new contributors to get involved as they provide a stream of tasks all focused around one area and have designated channels for help and advice. All of the active working groups are listed below:
|Name||Status||Short Description||Zulip Stream|
|Async-await Implementation||Active||Implementing async-await||#t-compiler/wg-async-await|
|Diagnostics||Active||Use crates.io crates for diagnostics rendering and make emitting diagnostics nicer.||#t-compiler/wg-diagnostics|
|Rustc Dev Guide||Active||Make the compiler easier to learn by ensuring that rustc-dev-guide is “complete”||#t-compiler/wg-rustc-dev-guide|
|LLVM||Incubating||Working with LLVM upstream to represent Rust in its development||#t-compiler/wg-llvm|
|Meta||Paused||How compiler team organizes itself||#t-compiler/wg-meta|
|MIR Optimizations||Active||Write MIR optimizations and refactor the MIR to be more optimizable.||#t-compiler/wg-mir-opt|
|Non-Lexical Lifetimes (NLL)||Retired||Implementing non-lexical lifetimes||#t-compiler/wg-nll|
|Parallel-rustc||Paused||Making parallel compilation the default for rustc||#t-compiler/wg-parallel-rustc|
|Polonius||Active||Exploring the integration of the “NLL 2.0”-like “Polonius analysis” into rustc||#t-compiler/wg-polonius|
|Polymorphization||Active||Implement an analysis to detect when functions can remain polymorphic during code generation.||#t-compiler/wg-polymorphization|
|Prioritization||Active||Triaging bugs, mainly deciding if bugs are critical (potential release blockers) or not.||#t-compiler/wg-prioritization|
|Profile-Guided Optimization||Retired||Implementing profile-guided optimization for rustc||#t-compiler/wg-profile-guided-optimization|
|RFC 2229||Retired||Make a closure capture individual fields of the variable rather than the entire composite variable||#t-compiler/wg-rfc-2229|
|RLS 2.0||Active||Experimenting with a new compiler architecture tailored for IDEs||#t-compiler/wg-rls2.0|
|Rustc pipelining||Retired||Enable Cargo to invoke rustc in a pipelined fashion, speeding up crate graph compiles.||#t-compiler/wg-pipelining|
|Self-Profile||Active||Improving the ||#t-compiler/wg-self-profile|
|Traits||Active||Improving the trait-system design + implementation||#t-compiler/wg-traits|
If you’re interested in figuring out who can answer questions about a particular part of the compiler, or you’d just like to know who works on what, check out our experts directory. It contains a listing of the various parts of the compiler and a list of people who are experts on each one.
The procedures directory contains descriptions of various rustc procedures.
Code of Conduct and licensing
All interactions on this repository (whether on issues, PRs, or elsewhere) are governed by the Rust Code of Conduct.