Compiler Lecture Series

These are videos where various experts explain different parts of the compiler:

Compiler architecture

• September 2022: Bootstrapping: The once and future compiler
• November 2024: Rust compiler overview
• June 2025: (Almost) everything you should know about the compiler frontend
• October 2025: Stable MIR: Fork the Rust compiler pipeline and go beyond
• November 2025: How Rust compiles

Contributing and compiler tooling

• January 2019: Tom Tromey discusses debugging support in rustc
• May 2021: Peeking at compiler-internal data (for fun and profit)
• September 2021: Hacking rustc: Contributing to the compiler
• October 2022: Rustc Explore
• September 2025: How doctests work
• June 2026: Compilers are just programs: Fixing a bug in the Rust compiler
• June 2026: Out-of-tree access to compiler state

Performance and compiler testing

• June 2019: Responsive compilers - Nicholas Matsakis - PLISS 2019
• June 2019: Things I Learned (TIL) - Nicholas Matsakis - PLISS 2019
• November 2024: The current state and future of Rust compiler performance
• March 2025: Rustlantis: Randomized differential testing of the Rust compiler
• June 2026: Precise, consistent, and reliable code coverage
• June 2026: Rethinking the incremental system in between compilation types

Rust Analyzer

• January 2019: How Salsa Works
• January 2019: Salsa In More Depth
• January 2019: Rust analyzer guide
• February 2019: Rust analyzer syntax trees
• March 2019: rust-analyzer type-checker overview by flodiebold
• March 2019: RLS 2.0, Salsa, and Name Resolution

Type System

• July 2015: Felix Klock - Rust: A type system you didn't know you wanted - Curry On
• November 2016: Felix Klock - Subtyping in Rust and Clarke's Third Law
• February 2019: Universes and Lifetimes
• April 2019: Representing types in rustc
• March 2019: RFC #2229 Disjoint Field Capture plan
• December 2025: -Znext-solver: What, why, and when

Closures

• October 2018: closures and upvar capture
• October 2018: blitzerr closure upvar tys
• January 2019: Convert Closure Upvar Representation to Tuples with blitzerr

Chalk

• July 2018: Coherence in Chalk by Sunjay Varma - Bay Area Rust Meetup
• March 2019: rustc-chalk integration overview
• April 2019: How the chalk-engine crate works
• May 2019: How the chalk-engine crate works 2

Polonius

• March 2019: Polonius-rustc walkthrough
• May 2019: Polonius WG: Initialization and move tracking
• March 2025: The first six years in the development of Polonius

Miri

• March 2019: oli-obk on miri and constant evaluation
• June 2026: FFI in Miri at 8,000 segfaults per second

Async

• February 2019: async-await implementation plans
• April 2019: async-await region inferencer

Code Generation

• January 2019: Cranelift
• December 2024: Rust unlinked: A journey through rustc, linkers, symbols, and static libraries
• December 2024: LLVM Developers' Meeting - Rust ❤️ LLVM