[phobos] Recent changes in unittests

[Andrei Alexandrescu]

This seems to be http://goo.gl/NnX2Mq. It's quite a bummer because I 
have plenty of memory on my laptop and used this kind of command frequently:

make generated/osx/debug/64/unittest/std/algorithm BUILD=debug MODEL=64

In the old version that would build phobos in one invocation of dmd, and 
then only the unittest for algorithm. That all was a few seconds. Now 
the command (after only touching std/algorithm.d) takes 55 seconds, and 
trying different -jN options don't help much beyond freezing my machine 
for a few seconds.

That's a huge pessimization, the kind that impacts working on Phobos 
significantly. Can we have some of both worlds, i.e. an option to enable 
compile-at-once vs. compile separately?


Thanks,

Andrei

On 10/26/13 9:26 PM, Andrei Alexandrescu wrote:
> Hello,
>
>
> There have been some changes in the way phobos unittests are run, which
> I must have missed. For the most part I'm noticing a significant
> slowdown, and -j does not help as much as it used to.
>
> Is there a summary for these changes so I don't need to rummage through
> the code?
>
>
> Thanks,
>
> Andrei