From mboxrd@z Thu Jan  1 00:00:00 1970
From: Joern Rennecke <amylaar@cygnus.co.uk>
To: bcurrie@tssc.co.nz (Bill Currie)
Cc: law@cygnus.com, ak@muc.de, egcs@cygnus.com
Subject: Re: Feature request: ability to describe x86 register halves as contraints.
Date: Thu, 02 Jul 1998 15:15:00 -0000
Message-id: <199807022137.WAA08168@phal.cygnus.co.uk>
References: <359BFC8F.124B@tssc.co.nz>
X-SW-Source: 1998-07/msg00103.html

> I'd thought of that, but the problem is the floating point regs.  This
> would work nicely for the integer registers, but the i860 groups the fp
> regs into pairs for DI mode regs:
> 
> 	MSW  LSW
> 	%f1  %f0
> 	%f3  %f2
> 	...
> 	%f31 %f30
> 
> And the pairs must always be referred to by the lower regiters (%f0, %f2
> ... %f30).

You would have then to use some special code to print register pairs.