Message-ID: <396429E9.4EF4C930@home.com>
From: Robin Johnson <robbat2 AT home DOT com>
Organization: Orbit Computers
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Newsgroups: comp.os.msdos.djgpp
Subject: Re: Voodoo optimization?
References: <20000706015618 DOT 01353 DOT 00001528 AT ng-bj1 DOT aol DOT com>
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Date: Thu, 06 Jul 2000 06:41:16 GMT
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To: djgpp AT delorie DOT com
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Reply-To: djgpp AT delorie DOT com

just an idea, how about -O6 ?

"S. T. L." wrote:
> 
> Hi. I've been trying to squeeze more optimized code out of DJGPP by playing
> with various switches.  (I don't know C yet, but I hope to learn it soon!)  I'm
> compiling BladeEnc, an MP3 encoder, and want to see how fast I can get it.
> (No, I don't use it to transfer music over the Internet.)  By turning on
> various switches, I've found that the commandline
> GCC -s -O2 -march=i686 -fomit-frame-pointer -ffast-math -funroll-loops
> -funroll-all-loops -malign-double -fstrict-aliasing -o BLADE.EXE *.c
> seems to produce the fastest code.  (I'm doing this on a Pentium III system.)
> Am I missing any blindingly obvious switches I should be trying?  I've tried
> several other switches, but they all have no effect or detrimental effects.
> I'm looking for speed, not for size.
> 
> (BladeEnc's homepage is at bladeenc.mp3.no and is under the LGPL.)
> 
> Thanks for your time!
> 
> -*---*-------
> S.T.L.  My Quotes Page * http://quote.cjb.net * leads to my NEW site.
> Pages up: 419 Quotes, 52 reviews of 169 science books, and a review of
> the Foundation series. Newest Page: S.T.L.'s Files for Download!

-- 
Robin Hugh Johnson
"Robbat2"
QTOD: "I used to be an idealist, but I got mugged by reality."
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