Date: Wed, 03 Jun 1998 16:01:10 -0700 From: Mike Smith <mike@smith.net.au> To: Donn Miller <dmm125@bellatlantic.net> Cc: James Raynard <james@jraynard.demon.co.uk>, hackers@FreeBSD.ORG Subject: Re: Recompiling sources with "-O2 -m486 -pipe" Message-ID: <199806032301.QAA01867@dingo.cdrom.com> In-Reply-To: Your message of "Wed, 03 Jun 1998 19:03:51 -0000." <Pine.NEB.3.96.980603185514.182A-100000@myname.my.domain>
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> > 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. There are no 486 instructions to generate, and anything over -O runs the risk of exposing bugs in the gcc optimiser it seems. -- \\ Sometimes you're ahead, \\ Mike Smith \\ sometimes you're behind. \\ mike@smith.net.au \\ The race is long, and in the \\ msmith@freebsd.org \\ end it's only with yourself. \\ msmith@cdrom.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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