Am 03.06.2011 03:06, schrieb Michalis Kamburelis: > Florian Klämpfl wrote: >> Am 01.06.2011 22:07, schrieb Michalis Kamburelis: >>> Hi, >>> >>> In my tests, FPC 2.4.4 has much slower CompareMem than FPC 2.4.2, at >>> least for some cases: >> >> I've commited an improved version in r17642 > > That's great :) I just tested with fpc from SVN (rev 17644), and can > confirm that CompareMem is much faster now. It beats CompareMem from > both FPC 2.4.4 and FPC 2.4.2: > > FPC 2.4.2: 2.635s > FPC 2.4.4: 16.803s > FPC trunk: 1.931s
I improved CompareDWord as well, for your application it should be even better. > > Although it's still slightly slower than comparing directly with "(V1[0] > = V2[0]) and ...", which is ~1.2s for all 3 FPC versions mentioned > above. I guess there has to be some price for CompareMem being more > general, and checking size at runtime. Yes. _______________________________________________ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
