Simen kjaeraas Wrote: > Jason House <[email protected]> wrote: > > > I wish I had your problems. I ported a sizable set of C++ code to D2 and > > discovered D2 with dmd was 50x slower than C++ with gcc! I've been to > > busy/disappointed to track down the bug(s) causing such a slowdown. If > > anyone is sufficiently inspired to find the bugs, I can make the GPL > > source code available. > > If no-one else has stepped up, I'm willing to have a look.
Thanks Simen. I sent a reply to the e-mail you gave in this newsgroup with the following things: .tar.gz with c++ source (2178 lines) .tar.gz with D2 source + ranges (1690 lines) .tar.gz with D2 source + string mixins (1696 lines) dmd's -profile output for the range-based version Very basic description of where the source came from and what it's doing An svg showing c++ dependency tree built from the #includes Benchmarking again, it appears I exaggerated. The D2 code compiled with -gc -release -inline -noboundscheck -O is only 33x slower (not 50x). My test this evening was with dmd 2.047 and g++ 4.4.5.
