Author: Christophe Theron
Date: 21:57:26 05/12/00
Go up one level in this thread
On May 12, 2000 at 17:27:42, Pete Galati wrote:
>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
I never tried more than -O3, as I did not know that a higher value could be
accepted.
I'll try...
Christophe
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