On Tue, 28 Jan 2003, Felix Kühling wrote: > prefetching looks odd to me. In the first transform loop in > _mesa_3dnow_transform_normalize_normals memory is prefetched which is > never read but only written. This is obviously useless. Then in the
No -- at least not *obviously* useless. Whether it *actually* is useless or not depends on the write allocate policy of the cache. On some caches it is a good idea to prefetch something you are going to write to because if it weren't in the case the write would have to trigger a read anyway so you might as well do that early on. Can't remember the K6 details, though, so it might be unnecessary. -Peter ``Average programmers should be rounded up and placed in internment camps to keep them away from keyboards.'' ------------------------------------------------------- This SF.NET email is sponsored by: SourceForge Enterprise Edition + IBM + LinuxWorld = Something 2 See! http://www.vasoftware.com _______________________________________________ Dri-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/dri-devel
