This post describes some performance work I have been doing recently on rustc. I spent several weeks on a particular problem with only a small amount of success. I hope a write-up will be interesting and educational, and may even lead to suggestions that make things better. The post is aimed at readers with some familiarity with compilers.
It seems like the article was renamed, so the URL changed to https://nnethercote.github.io/2023/07/11/back-end-parallelism-in-the-rust-compiler.html
Updated