Date: Mon, 16 Oct 2000 00:20:57 +0100 (BST) From: Doug Rabson <dfr@nlsystems.com> To: Marcel Moolenaar <marcel@cup.hp.com> Cc: freebsd-ia64@freebsd.org Subject: Re: RAW dependency violation Message-ID: <Pine.BSF.4.21.0010160018280.22441-100000@salmon.nlsystems.com> In-Reply-To: <39EA1791.A24345CE@cup.hp.com>
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On Sun, 15 Oct 2000, Marcel Moolenaar wrote: > Doug, > > I fixed two RAW dependency violations. I didn't want to step on your > toes, but I know that hazards are painful, so I'm particularly paying > attention to that. > > BTW: it's a RAW dependency violation, because only branch instructions > are allowed to use predicate registers defined in the same instruction > group. Branches are special-cased to allow for low-latency compar-branch > sequences. Great, thanks. I have been relying on gas to detect the violations - I can't keep all the rules and exceptions in my head. Did you intend to attach a patch or have you already committed something? > > Just FYI :-) > > PS: I have the SKI documentation finished, I only need to put it on my > homepage. This means I have to figure out how to get it through the > firewall first :-/ Cool! I just discovered today that a bleeding edge -current machine will run SKI just fine which is very nice. -- Doug Rabson Mail: dfr@nlsystems.com Phone: +44 20 8348 6160 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-ia64" in the body of the message
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