Maintaining and improving the existing, implementing, and researching new exploit mitigations for the Rust compiler

Define compiler intermediate representation usable by external tools

Refactoring the trait system of rustc

Improving the binary size of Rust programs and libraries

改善 rustc 编译性能（编译耗时方面）。

Soundly expanding the capabilities of compile-time function evaluation in Rust

调试工具以及相应的基础设施

Aiming to make rustc better at telling the user why the compiler isn't smart enough to understand their code yet

libgccjit AOT codegen for rustc

Improving incremental compilation in rustc

代表 Rust 参与上游 LLVM 的开发工作。

Revival and Improving the Rust Macros

编写 MIR 优化代码，重构 MIR 使其更加可优化。

让 rustc 默认支持并行编译

实现全新借用检查器这个实验性工作

Implementing polymorphization to reduce unnecessary monomorphisation in rustc

Triaging bugs, mainly deciding if bugs are critical (potential release blockers) or not

确保 rustc 指南和 API 文档的“完整”，让学习编译器变得更简单。

Helping new and experienced contributors learn more about rustc

改进“-Z self-profile”功能。