Lighting Talk: Comparison between Scala Compilers

First, thank you for Scala; I'm very much looking forward to version 3! The Dotty compiler has a significantly different architecture based on "fused mini phases" and was claimed to be ~2x faster than the then-current Scala compiler. As Dotty's evolved and features were added, how has that performance changed, and what should we expect for Scala 3? Is there any place we can track compilation performance over time? The Scala benchmark dashboard only shows scalac releases.

I guess you mean this? I'll have to admit I'm not sure how to 'read' this yet. :/ I'll try to tell you what I think I know: * Odersky explains in his talk how they restructured the compiler and how they achieve this speed. ([This 5-minute talk by Dimitry Petrashko briefly explains one of the design choices, so can judge for yourself]) I don't expect this to suddenly 'go away'. The compiler architecture hasn't changed as far as I can tell and there's been no announcements about it. * It's been while since they've made these claims about the Dotty compiler, though. Last was in 2016. This kind of worries me. I hope they'll give us an update about this soon. * The Dotty compiler hasn't been…