On Tue, 31 May 2011, Richard Sandiford wrote:
> Hans-Peter Nilsson <h...@bitrange.com> writes:
> > Index: tm.texi.in
> > ===================================================================
> > --- tm.texi.in (revision 174376)
> > +++ tm.texi.in (working copy)
> > @@ -2327,6 +2327,11 @@ constraints is through machine-dependent
> > You can define such letters to correspond to various classes, then use
> > them in operand constraints.
> >
> > +You must define the narrowest register class for a register so that
> > +class either has no subclasses, or that for some mode, the move cost
> > +between registers within the class are cheaper than moving a register
> > +in the class to or from memory (@pxref{Costs}).
> > +
>
> I fear this isn't true for some MIPS classes.
I fear the assert will strike then, when there are allocatable
registers in such a class. :)
You don't happen to have target and options to cc1?
brgds, H-P
