Date: Mon, 07 Jan 2002 13:21:41 -0800 (PST) From: John Baldwin <jhb@FreeBSD.org> To: John Baldwin <jhb@FreeBSD.org> Cc: "Matthew D. Fuller" <fullermd@over-yonder.net>, freebsd-hackers@FreeBSD.org, Stephen Montgomery-Smith <stephen@math.missouri.edu> Subject: Re: Tell gcc I have a i686 Message-ID: <XFMail.020107132141.jhb@FreeBSD.org> In-Reply-To: <XFMail.020107131402.jhb@FreeBSD.org>
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On 07-Jan-02 John Baldwin wrote: > Ok. This isn't 686 specific at all. However, one optimization might be to > get rid of the xorl, and use 'addl' for the first instruction instead of > adcl. > Anyways, If I were you, I would do it via a series of rcl (rotate through > carry > left, it shits in the carry flag instead of 0), thus I would do: Erm, it shifts in the carry flag. CPU's usually don't go around abusing their flags like that. :-P -- John Baldwin <jhb@FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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