[PATCH] Fix up get_reload_reg (PR rtl-optimization/56195)

[Jakub Jelinek]

On Thu, Feb 07, 2013 at 09:01:15PM -0500, David Miller wrote:
> From: Jakub Jelinek <jakub@redhat.com>
> Date: Fri, 8 Feb 2013 01:27:02 +0100
> 
> > +void
> > +fn (void)
> > +{
> > +  if (b)
> > +    {
> > +      int *p, *q;
> > +      char g;
> > +
> > +      if (f++)
> > +	for (;; e++);
> > +    lbl:
> > +      for (b = 0; b < 2; b++)
> > +	t /= d + 1 ? : i || a < c < (d = f) ? : 1 | (j = 2);
> > +
> > +      *p = g >= *q ^ c != a ^ *p;
> 
> I know this is "just a testcase" but it looks like both 'p' and 'q'
> can be uninitialized at this point.

Yeah, that is why it is just an dg-do assemble testcase, not dg-do run.
The uninitialized vars are necessary to reproduce the problem, at least
I haven't managed to adjust the testcase to reproduce without those.

	Jakub