Date: Fri, 23 Aug 1996 13:23:10 +0800 (GMT) From: Orlando Andico To: Peter Johnson cc: djgpp AT delorie DOT com Subject: Re: Pentium GCC In-Reply-To: <321a8a95.3515402@news.mcs.net> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII On Wed, 21 Aug 1996, Peter Johnson wrote: > I've heard a few rumors about there being a pentium-optimizing version > of GNU C/C++. > 1. If it exists, where can I get it? Is it ported to DJGPP yet? > 2. If it doesn't exist, where can I pester ;) people about making > it? (j/k) > > Thanks! Marc Lehmann and Chai Harjo are working on a set of patches for gcc-2.7.2 which optimizes for Pentiums. Their site is at http://www.goof.com/pcg. The latest reliable patch that I know of is the pl9. I have tested this (under Linux) and a 30% speed improvement can be obtained over the stock i486-linux gcc for things like gzip and dhrystone-2. There also is the latest alpha patch (which I am helping to test). Marc claims that it can compile the Linux kernel at -O6 (the pl9 version can only manage -O3) stably. However, I have not yet succeeding in building this version because it requires some include files from the POSIX threads package which I do not possess. I can help with some tips on the compilation and stuff, although I never have done it for anything but Linux. Beware that the so-called "patches" I'm talking about are about 3-5Meg in size, gzipped. You also need the base gcc-2.7.2 source tree to start with. Cheers. ---- Orlando Andico http://gibson.eee.upd.edu.ph/~orly/ orly AT gibson DOT eee DOT upd DOT edu DOT ph "Who knows what's going to happen, IRC Lab/EE Dept/UP Diliman lottery or car crash, or you'll join a cult."