V Thu, 12 Nov 2015 12:13:10 +0000 perlancar via Digitalmars-d-learn <digitalmars-d-learn@puremagic.com> napsáno:
> On Wednesday, 11 November 2015 at 14:20:51 UTC, Rikki Cattermole > wrote: > > I turned it into mostly using large allocations, instead of > > small ones. > > Although I'd recommend using Appender instead of my custom > > functions for this. > > > > Oh and for me, I got it at 2 secs, 513 ms, 397 μs, and 5 > > hnsecs. Unoptimized, using dmd. > > When release mode is enabled on dmd: 1 sec, 550 ms, 838 μs, and > > 9 hnsecs. So significant improvement even with dmds awful > > optimizer. > > Hi Rikki, > > Thanks. With your version, I've managed to be ~4x faster: > > dmd : 0m1.588s > dmd (release): 0m1.010s > gdc : 0m2.093s > ldc : 0m1.594s > > Perl version : 0m11.391s > > So, I'm satisfied enough with the speed for now. Turns out dmd is > not always slower. It depends which flags do you use on ldc and gdc ldc (-singleobj -release -O3 -boundscheck=off) gdc (-O3 -finline -frelease -fno-bounds-check)
