Date: Mon, 24 Jul 2000 10:03:40 -0400 (EDT) From: mi@aldan.algebra.com To: djb@ifa.au.dk Cc: Dan Larsson <dl@tyfon.net>, FreeBSD Stable List <stable@FreeBSD.ORG> Subject: Re: Recommended compilation optimizations Message-ID: <200007241403.KAA26602@misha.privatelabs.com> In-Reply-To: <20000724152021.A61713@relativity.student.utwente.nl>
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On 24 Jul, Dave Boers wrote: = On Mon, Jul 24, 2000 at 11:36:30AM +0200, Dan Larsson wrote: = > When doing a buildworld or buildkernel, what are the optimal = > compilation flags I can set for a system running Pentium Pro? = = -O -pipe = = AFAIK that's the only optimization that is more or less guaranteed to = work. I've seen '-fexpensive-optimizations' break havoc in the squid binary, so I no longer use it for anything, but '-mcpu=i686 -march=i686' seems fine to me and tells the compiler that your only target processor is of the 686 class. If you are not planning to debug the thing, add '-fomit-frame-pointer'. -mi (who gets annoyed every once in a while when he sees people discouraging optimization as dangerous instead of fixing the compiler) To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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