Profiling DMD's Compilation Time with dmdprof

[Vladimir Panteleev]

On Thursday, 15 November 2018 at 19:18:27 UTC, Manu wrote:
> I'm not sure how VisualStudio (read: MSBuild) should behave
> differently than make?
> It's not like the build script is taking a long time, it's the
> invocation of DMD that takes 100% of that time.

That seems to take about half the time for me (2 out of the 4 
seconds).

> 36% slower seems highly optimistic? Perhaps you're building a 
> debug build of DMD with a debug build of DMD? I guess that 
> wouldn't be so slow... I suspect it's the optimiser that's very 
> slow?

36% slower for compiling a real-life program with the built D 
compiler. The comparison is between a normal and debug build of 
DMD (used to build the program).