Auto merge of #142390 - cjgillot:mir-liveness, r=davidtwco Perform unused assignment and unused variables lints on MIR. Rebase of https://github.com/rust-lang/rust/pull/101500 Fixes https://github.com/rust-lang/rust/issues/51003. The first commit moves detection of uninhabited types from the current liveness pass to MIR building. In order to keep the same level of diagnostics, I had to instrument MIR a little more: - keep for which original local a guard local is created; - store in the `VarBindingForm` the list of introducer places and whether this was a shorthand pattern. I am not very proud of the handling of self-assignments. The proposed scheme is in two parts: first detect probable self-assignments, by pattern matching on MIR, and second treat them specially during dataflow analysis. I welcome ideas. Please review carefully the changes in tests. There are many small changes to behaviour, and I'm not sure all of them are desirable.
rust-analyzer is a language server that provides IDE functionality for writing Rust programs. You can use it with any editor that supports the Language Server Protocol (VS Code, Vim, Emacs, Zed, etc).
rust-analyzer features include go-to-definition, find-all-references, refactorings and code completion. rust-analyzer also supports integrated formatting (with rustfmt) and integrated diagnostics (with rustc and clippy).
Internally, rust-analyzer is structured as a set of libraries for analyzing Rust code. See Architecture in the manual.
https://rust-analyzer.github.io/book/installation.html
If you want to contribute to rust-analyzer check out the CONTRIBUTING.md or if you are just curious about how things work under the hood, see the Contributing section of the manual.
If you want to use rust-analyzer's language server with your editor of choice, check the manual. It also contains some tips & tricks to help you be more productive when using rust-analyzer.
See the security and privacy sections of the manual.
For usage and troubleshooting requests, please use “IDEs and Editors” category of the Rust forum:
https://users.rust-lang.org/c/ide/14
For questions about development and implementation, join rust-analyzer working group on Zulip:
https://rust-lang.zulipchat.com/#narrow/stream/185405-t-compiler.2Frust-analyzer
rust-analyzer is primarily distributed under the terms of both the MIT license and the Apache License (Version 2.0).
See LICENSE-APACHE and LICENSE-MIT for details.