From owner-freebsd-hackers Wed Jun 3 16:07:24 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id QAA22959 for freebsd-hackers-outgoing; Wed, 3 Jun 1998 16:07:24 -0700 (PDT) (envelope-from owner-freebsd-hackers@FreeBSD.ORG) Received: from iconmail.bellatlantic.net (iconmail.bellatlantic.net [199.173.162.30]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id QAA22928 for ; Wed, 3 Jun 1998 16:07:13 -0700 (PDT) (envelope-from dmm125@bellatlantic.net) Received: from myname.my.domain (client201-122-92.bellatlantic.net [151.201.122.92]) by iconmail.bellatlantic.net (IConNet Sendmail) with SMTP id TAA28460; Wed, 3 Jun 1998 19:03:24 -0400 (EDT) Newsgroups: comp.unix.bsd.freebsd.misc Date: Wed, 3 Jun 1998 19:03:51 +0000 (GMT) From: Donn Miller X-Sender: dmm125@myname.my.domain To: James Raynard cc: hackers@FreeBSD.ORG Subject: Re: Recompiling sources with "-O2 -m486 -pipe" In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Tue, 2 Jun 1998, James Raynard wrote: > > I compile everything with -O2 -pipe all the time :-) (-m486 is > counter-productive on a Pentium or above). There was a problem > at one time with -O2 generating bad kernels, but that was fixed a good > couple of years ago. > About the -m486 option -- I use -m486 -O3 -pipe all the time; does it slow down the execution somewhat? I noticed the Mozilla sources defined -mno-486. Do you know if compiling with -mno-486 gives better results than -m486 as far as speed, etc.? I figured that -m486 generated 486 instructions, which would make a pentium run faster. --Donn To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message