Profiling DMD's Compilation Time with dmdprof

[Vladimir Panteleev]

On Saturday, 17 November 2018 at 23:01:23 UTC, Basile B. wrote:
> I put a start to the project then today i remembered 
> callgrind...
> What are the pros and cons in comparison with callgrind ? By 
> coincidence i had to callgrind dmd today and got answers to a 
> performance issue in a very straight forward way because for 
> example:
>
>     $ valgrind --tool=callgrind generated/debug/dmd somefile.d
>
> is very simple procedure and produce a file that's easy to 
> interpret in kcachegrind (which can then also produce a graph 
> in ps format). Note that i don't try to discredit your work, 
> i'm just curious to know.

It sounds like you misunderstood the purpose of dmdprof.

dmdprof will show you a profile graph of the source code *being 
compiled* (i.e. which parts take more time to compile and which 
parts cause other parts to get compiled), not of DMD source code.