i386 string compare - code quality regression from 2.95

[Zack Weinberg]

On Mon, May 14, 2001 at 10:32:16PM -0700, Richard Henderson wrote:
> 
> > +	  (compare:CC (mem:BLK (match_operand:SI 4 "register_operand" "0"))
> > +		      (mem:BLK (match_operand:SI 5 "register_operand" "1"))))
> > +     (use (match_operand:SI 6 "register_operand" "2"))
> > +     (use (match_operand:SI 3 "immediate_operand" "i"))
> > +     (use (reg:SI 19))
> > +     (clobber (match_operand:SI 0 "register_operand" "=S"))
> > +     (clobber (match_operand:SI 1 "register_operand" "=D"))
> > +     (clobber (match_operand:SI 2 "register_operand" "=c"))])
> 
> Remove the constraints here; they are unused.

I'm not sure what you mean.  All of them, or just the register
selections on the clobbers, or what?  What about the predicates, are
they necessary?

-- 
zw A man who has never gone to school may steal from a freight car, but if he
   has a university education, he may steal the whole railroad.
   	-- Theodore Roosevelt