Date: Fri, 24 Dec 1999 19:19:32 -0400 (AST) From: Peter Cordes To: mike AT algoritm DOT yaroslavl DOT su cc: pgcc AT delorie DOT com Subject: Re: Some questions In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Reply-To: pgcc AT delorie DOT com X-Mailing-List: pgcc AT delorie DOT com X-Unsubscribes-To: listserv AT delorie DOT com Precedence: bulk On Fri, 24 Dec 1999 mike AT algoritm DOT yaroslavl DOT su wrote: > I DON'T KNOW HOW ENABLING MMX, PII, K6-2 OPTIMIZATION A-A-aA-A-A-AaAh!! > :-) Please help me! Well, since you asked nicely :) I use CFLAGS='-Wall -pipe -O6 -mpentium -march=pentium' for my P200MMX. -funroll-loops or -funroll-all-loops (which also turns on -funroll-loops) sometimes helps for floating-point heavy code. Try it and see if it helps or not. There's also -malign-double, also for floating point. (and only sometimes helps.) BTW, -mpentiumpro makes pgcc optimize for a ppro (or PII, PIII). -march=pentiumpro makes pgcc actually use ppro-specific instructions (AFAIK). > Information from your site not enough to understand how make it. try the FAQ: http://goof.com/pcg/pgcc-faq.html#SEC04 It says what I said above, but in more detail. happy hacking, #define X(x,y) x##y DUPS Secretary ; http://is2.dal.ca/~dups/ Peter Cordes ; e-mail: X(peter AT cordes DOT phys. , dal.ca) "The gods confound the man who first found out how to distinguish the hours! Confound him, too, who in this place set up a sundial, to cut and hack my day so wretchedly into small pieces!" -- Plautus, 200 BCE