pa reload problem

[John David Anglin]

> On Wed, Dec 06, 2000 at 03:41:06PM -0500, John David Anglin wrote:
> > >     (expr_list:REG_EQUIV (mem/u:SI (lo_sum:SI (reg/f:SI 309)
> > > 		(unspec:SI[
> > > 			(symbol_ref:SI ("constructor_max_index"))
> > > 		    ]  0)) 0)
> 
> This appears to be the same sort of bug as in compile/20001205-1.c
> except that an unspec is involved instead of an asm_operands.
> 
> I wonder if the best solution is to avoid local-alloc creating
> REG_EQUIV notes for every little thing under the sun.  Allow
> only general_operand or something.

I am wondering if side_effects_p should return 1 if it encounters
an UNSPEC.  Currently, it just ignores it.  This would prevent the
generation of the REG_EQUIV notes and I think resolve the problem.
However, it might have other side effects.  Any thoughts on this?

Dave
-- 
J. David Anglin                                  dave.anglin@nrc.ca
National Research Council of Canada              (613) 990-0752 (FAX: 952-6605)