There are a bunch of other chokepoints, but type inference is a big part of it: https://github.com/apple/swift/blob/main/docs/CompilerPerformance.md https://git

There are a bunch of other chokepoints, but type inference is a big part of it: https://github.com/apple/swift/blob/main/docs/CompilerPerformance.md https://github.com/apple/swift/blob/main/docs/CompilerPerfor... Another thing I would add to swift as a flag is to make imports based on specific files vs. an abstract "module", there is a lot of repeated work that happens because of that last time I looked.