How to profile compile times of a source code?

[Stefan Koch]

On Saturday, 30 January 2021 at 23:34:50 UTC, Stefan Koch wrote:
> 
> this special version of dmd will generate a trace file which 
> can be read with the included printTraceHeader tool

you will want to take a look at the PhaseHist command which shows 
you the compiler phase that took the most time.

Alternative I recommend using callgrind to profile where dmd 
spents most of it's time.
For that to be useful you need a debug build of dmd though.