Author: Landon Rabern
Date: 19:57:47 05/08/00
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On May 08, 2000 at 05:28:33, Bas Hamstra wrote: >On May 08, 2000 at 01:06:34, Landon Rabern wrote: > >>On May 08, 2000 at 00:32:39, Robert Hyatt wrote: >> >>>On May 07, 2000 at 19:27:11, Landon Rabern wrote: >>> >>>>When compiling with Maximize Speed on in release mode in MSVC++ 6.0 I run at >>>>about 190,000 nps, but in DJGPP with max optimizations I can get around 330,000 >>>>nps in the same position. Isn't Visual C++ supposed to be faster? Any ideas on >>>>whats going on? >>>> >>>>Thanks, >>>> >>>>Landon W. Rabern >>> >>> >>>I would suspect you are not getting all the MSVC optimizations turned on >>>correctly. It is clearly better than GCC... >> >>I did customize and put them on, but still slow. What command-line options do >>you use? >> >>Thanks, >> >>Landon > >Just turn on "maximize speed", that's all. There can be rather large differences >between compilers, depending on the programs that you are compiling. But I have >personally never seen a program where VC was not fastest. > >I discovered kind of the opposite from you: > > VC GCC BORLAND > >program 1: 350 KNPS 350 KNPS 275 KNPS >program 2: 750 KNPS 450 KNPS 600 KNPS > > >So in for the first prog Borland is slowest, but for the second program GNU is >slowest! For GNU: -O2 -fomitframepointer -mpentiumpro. > >A possible explanation is that I do an asm LastOne in Borland/VC and not in GNU. with djgpp I use -O3 fomitframepointer -finlinefunctions Landon
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