Date: Thu, 4 Jun 1998 08:01:40 +0200 From: Ollivier Robert <roberto@keltia.freenix.fr> To: hackers@FreeBSD.ORG Subject: Re: Recompiling sources with "-O2 -m486 -pipe" Message-ID: <19980604080140.A4348@keltia.freenix.fr> In-Reply-To: <199806032301.QAA01867@dingo.cdrom.com>; from Mike Smith on Wed, Jun 03, 1998 at 04:01:10PM -0700 References: <Pine.NEB.3.96.980603185514.182A-100000@myname.my.domain> <199806032301.QAA01867@dingo.cdrom.com>
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According to Donn Miller: > > 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 -m486 is likely to slow down the execution because -m486 alignments are not really suitable to pentium and later processors. -m486 doesn't generate any special instruction (the code will run on a 386). If you want to see any difference in speed, switch to egcs/pgcc which has a pentium mode (and a Cyrix/K5/K6 mode for pgcc). -- Ollivier ROBERT -=- FreeBSD: The Power to Serve! -=- roberto@keltia.freenix.fr FreeBSD keltia.freenix.fr 3.0-CURRENT #60: Fri May 15 21:04:22 CEST 1998 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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