Author: Tom King
Date: 14:52:33 05/11/00
Go up one level in this thread
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! >> >>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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