On Friday, 10 September 2021 at 11:20:10 UTC, eugene wrote:
same picture with gdc 8.4.0 - one thread, no pthread_create() behind the scenes.
GDC is stuck on a much older version of D. Iain has backported some bugfixes and optimizations, but featurewise it's mostly D 2.076. This is because that's the last version of the D frontend implemented in C++, and he needed that to get gdc into gcc. As bauss pointed out, the library feature you're talking about was implemented in 2.087. Iain is working on porting gdc over to the D version of the D frontend, at which point it will be much more up-to-date.
