Author: Pete Galati
Date: 14:27:42 05/12/00
Go up one level in this thread
On May 12, 2000 at 12:39:40, Christophe Theron wrote: >On May 12, 2000 at 04:22:05, Dave Gomboc wrote: > >>On May 12, 2000 at 01:54:25, Christophe Theron wrote: >> >>>On May 11, 2000 at 17:52:33, Tom King wrote: >>> >>>>On May 11, 2000 at 17:37:28, Pete Galati wrote: >>>> >>>>>Try toying with the "-O3" number, allot of times -O6 or 7 will be somewhat >>>>>faster for me. >>>>> >>>> >>>>I may try it - I've only ever used -O, -O2, and -O3. I didn't realize >>>>higher levels were supported. Thanks for the tip! >>> >>> >>>I think it was a joke... Or am I really missing something? >>> >>> Christophe >> >>AFAIK, depending on the specific platform you compile on, and the version of gcc >>you use, some values higher than 3 can have an effect. >> >>Dave > > > >They are not mentionned in the HTML doc for GCC... > > > Christophe > With DJGPP version of gcc, you can get maybe approx 200(?) nps extra by using the right "-O" number in the makefile, I think you can only go up to -O9, but -O9 has never givem me the fastest. It looks like I settled on "CFLAGS= -O7 -Wall" the last time I compiled a slightly modified SCP. But if you know a better way to optimize with gcc, I'm sure he'd gain more from your advice than mine. I very seldom mess around with the thing anymore. Pete
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