On Thu, 16 Oct 2014, Jakub Jelinek wrote:
> On Thu, Oct 16, 2014 at 03:44:50PM +0200, Richard Biener wrote:
> > --- gcc/testsuite/gcc.dg/tree-ssa/loop-42.c (revision 0)
> > +++ gcc/testsuite/gcc.dg/tree-ssa/loop-42.c (working copy)
> > @@ -0,0 +1,19 @@
> > +/* { dg-do run } */
> > +/* { dg-options "-O2 -fdump-tree-cunroll-details" } */
> > +
> > +extern void abort (void);
> > +int a = -1;
> > +int n = sizeof (int);
> > +int main()
> > +{
> > + char *p;
> > + int i;
> > + for (i = 0, p = (char *)&a; i < n; ++i)
> > + *p++ = 0;
> > + if (a != 0)
> > + abort ();
> > + return 0;
> > +}
> > +
> > +/* { dg-final { scan-tree-dump "loop with 4 iterations completely
> > unrolled" "cunroll" } } */
>
> This will fail on all targets where sizeof (int) is not 4 :(.
> So, I think you need to guard this scan-tree-dump with { target int32 }.
I'll adjust the testcase to scan for "loop with . iterations" instead.
Richard.
