What happened to syntex_syntax compilation time?

#1

In recent Rust versions syntex_syntax started taking a looong time to compile. Is that a known regression?

#2

Are you using nightly builds? They now have LLVM runtime assertions enabled which slows things down.

#3

Hm, nightlies are only about 25% slower. Perhaps I just haven’t noticed before how slow it was before (it takes 2 minutes on my machine).