I have written previously about my efforts to speed up the Rust compiler in 2016 (part 1, part 2) and 2018 (part 1, part 2, NLL edition). It’s time for an update on the first half of 2019. Faster globals libsyntax has three tables in a global data structure, called Globals, storing information about spans … Continue reading How to speed up the Rust compiler in 2019