[muth02446]

The key to unlocking a 10x improvement to compilation speeds will like be multithreading. I vaguely remember that LLVM struggled with this and I am not sure where it stands today. On the frontend side language (not compiler) design will affect how well things can be parallelized, e.g. forward declatations probably help, mandatory interprocedural anaylyses probably hurt.

Having said that, we are in a bad shape when golang compiling 40kLOC in 2s is a celebrated achievement. Assuming this is single threaded on a 2GHz machine, we 2s * 2GHz / 40kLOC = 100k [cycles] / LOC

That seems like a lot of compute and I do not see how this cannot be improved substantially.

Shameless plug: the Cwerg language (http://cwerg.org) is very focussed on compilation speeds.