[to3m]

This is exactly the sort of situation where fast compiles often do help, in my view! Debugging is one case where speed of progress can depend on build time, because you need to run the code after each change to see what effect it had and to decide what to do next.

[ardivekar]

Optimised code is occasionally so cryptic that you'll just waste a few hours figuring out what it does, which basically nullifies the effect of faster compile time.