On Mon, 5 Apr 1999, Matthew Dillon wrote: > My conclusion: Don't bother with -mpentiumpro or -march=pentiumpro. > Not only do they not result in better performance, -march=pentiumpro > will not run on a K6-2. I dunno about a K6-3. -m<cpu> does not change > the assembly output at all. -march=<cpu> does change the assembly output, > but does not appear to result in any noticeable improvement in performance > over not using -m at all.
Totally informally, I replaced libc (compiled with -O2) with one compiled with -mpentiumpro and -O6, and compiling kdebase seemed to run a bit slower (GNU make took longer to traverse directories and egcs took a bit longer to run). > Which leads me to believe that using -Os might be beneficial. Have you tried anything beyond -O2? - alex To Unsubscribe: send mail to majord...@freebsd.org with "unsubscribe freebsd-current" in the body of the message
