Author: Christophe Theron
Date: 22:54:25 05/11/00
Go up one level in this thread
On May 11, 2000 at 17:52:33, Tom King wrote:
>On May 11, 2000 at 17:37:28, Pete Galati wrote:
>
>>On May 11, 2000 at 17:20:11, Tom King wrote:
>>
>>>On May 11, 2000 at 13:28:10, Christophe Theron wrote:
>>>
>>>[snip]
>>>>
>>>>
>>>>GCC produces very good code.
>>>>
>>>>For Chess Tiger I have just discovered that by using some different optimization
>>>>options it produces code that is as fast as the code generated by MSVC 6.0, SP3,
>>>>with maximise speed on. And this is an old version of GCC (2.7.x).
>>>>
>>>
>>>Hi Christophe!
>>>
>>>I'm still using gcc 2.7.2, and am a big fan of GCC.
>>>
>>>What optimizations have you find which produce fast code from GCC?
>>>
>>>I'm using -O3 -m486 -fomit-frame-pointer
>>
>>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
>>>Any others worthwhile?
>>>
>>>Rgds,
>>>Tom
>>>
>>>tom_king@btinternet.com
>>>*not* tom@hatbulb.demon.co.uk any longer, but I don't know how to tell CCC that!
>>
>>I just send a moderator email and explained the change, and it worked, but
>>there's also an email address where you can reach Steven ICD's storefront
>>webpage, and that'll get it done too I guess.
>>
>>Pete
>>
>
>Hmm.. guess I could do the same. Shame there's no automated way to do this.
>People chop and change email addresses quite frequently these days.
>
>At least we do in the U.K, where it's a constant battle to try and find
>a reasonably cheap internet access deal, without being ripped off.
>
>[grrr.]
>
>Rgds,
>Tom
>
>tom_king@btinternet.com
>*not* tom@hatbulb.demon.co.uk any longer
>
>>>
>>>>So the standard edition of MSVC6 will produce a code that will be much slower
>>>>than what you get with the free GCC.
>>>>
>>>>
>>>>
>>>> Christophe
>>>>
>>>>
>>>>
>>>>> In other words, would one of the biggest things
>>>>>I'd give up be the speed that MS compilers are know for, and basically I'd get a
>>>>>good package anyhow? Because I'm not really convinced that I have a real need
>>>>>to be turning out ultra fast programs, when a good learning tool might really be
>>>>>more effective (as long as it really can compile programs). And not that I have
>>>>>the backround to do it now, but I think creating a program & interface probably
>>>>>interests most people.
>>>>>
>>>>>Pete
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