Speeding up compilation of template-heavy code

[Stefan Koch]

On Saturday, 22 February 2020 at 11:26:19 UTC, Per Nordlöw wrote:
> We're looking for a way to speed up compilation of 
> template-heavy code. So we are trying to find out which parts 
> of the code that is most costly to compile.
>
> Is there a dmd flag that shows the code after template 
> instantiations has been performed? Or some other dmd flag that 
> can help out finding hot-spots in the compiler in our case.

I have patches which add some tracing functionality.
Another approach is to throw the -v flag and just count which 
semantic steps seem to take a long time.