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From: Eric Botcazou <ebotcazou@libertysurf.fr>
To: Barry Wealand <barry.wealand@lmco.com>
Subject: Re: Disqualifying instructions for branch delay slot scheduling
Date: Fri, 26 Mar 2004 15:28:00 -0000
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Cc: gcc@gcc.gnu.org,
 "Kancler, Cliff" <cliff.kancler@lmco.com>,
 reed@reedkotler.com,
 "Katyryniuk, Mike" <mike.katyryniuk@lmco.com>,
 "Steigmeyer, Bruce" <bruce.steigmeyer@lmco.com>
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> Can anybody quickly summarize how one would go about disqualifying
> certain specific instructions for branch delay slot scheduling?  Any
> guidance at all would be greatly appreciated.

You can define a new attribute in the .md file with define_attr, defaulting 
to 'false', and set it to 'true' for the problematic instructions.  Then 
test it in the DELAY-N attribute tests of the define_delay patterns.

-- 
Eric Botcazou