Author: David Blackman
Date: 02:36:14 06/20/01
Go up one level in this thread
On June 19, 2001 at 13:11:09, Dann Corbit wrote: >On June 19, 2001 at 06:16:09, David Blackman wrote: >>With older gcc's it was often useful to add the flag -fomit-frame-pointer . I >>don't know if this is still true for GCC 3.0, but it might be worth a try. > >That's automatic when you have selected -O3 (If I recall correctly). Worth a >try anyway, I suppose. I am not expecting miracles. There was quite a build-up >so I was initially expecting something great. With older GCCs running on Linux it definitely wasn't automatic. But this could be different with GCC 3.0 on MS-Windows. Another try is fno-exceptions . This only makes a difference for C++ , and obviously it is only a good idea if the code doesn't use exceptions. It helps sometimes because the GCC code for exceptions has been a bit slow and cumbersome, and it gets inserted even in places that don't use it in case they have to pass exceptions through. Are you using C or C++ here? Yet another idea is to try it on Linux and don't use position independant code. That frees up another general purpose register and often gets things a bit faster. I'd be surprised if all this was enough to catch up with MSVC, but it should help a little.
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.