On Sun, 2007-04-22 at 14:44 +0200, Richard Guenther wrote: > > At work we use -O3 since it gives 5% performance gain against -O2. > > profile-feedback has many flags and there is no overview of it in the > > doc IIRC. Who will use it except GCC developpers? Who knows about your > > advice?
On Sun, Apr 22, 2007 at 03:22:56PM +0200, Jan Hubicka wrote: > Well, this is why -fprofile-generate and -fprofile-use was invented. > Perhaps docs can be improved so people actually discover it. Do you > have any suggestions? Docs could be improved, but this also might be a case where a tutorial would be needed, to teach users how to use it effectively. > (Perhaps a chapther for FDO or subchapter of gcov docs would do?)
