From mboxrd@z Thu Jan  1 00:00:00 1970
From: Richard Earnshaw <rearnsha@arm.com>
To: Richard Henderson <rth@cygnus.com>
Cc: rearnsha@arm.com
Subject: Re: Possible change to gen* for splits 
Date: Thu, 16 Mar 2000 10:42:00 -0000
Message-id: <200003161840.SAA13122@cam-mail2.cambridge.arm.com>
References: <20000316101057.A3334@cygnus.com>
X-SW-Source: 2000-03/msg00430.html

> On Thu, Mar 16, 2000 at 05:05:29PM +0000, Richard Earnshaw wrote:
> > Maybe it would be better if the "glue" were to appear outside of the 
> > double quotes.  Eg (though I haven't thought the implications of this 
> > particular syntax through):
> > 
> > 	+"&& reload_completed"
> 
> Can't do that without hacking up read_rtx.  We're only prepared
> for certain types of tokens.
> 
> 
> r~


Ok, how about forgetting the second constraint altogether, and having a 
single constraint like

"foo && (RECOG || bar)"

RECOG could always be #define'd to 1 when recognizing a pattern, and to 
zero when the constraint is used as a split.  The optimizer can then 
simplify the expression as required.