[Bug tree-optimization/62171] restrict pointer to struct with restrict pointers parm doesn't prevent aliases

[ncahill_alt at yahoo dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62171

--- Comment #16 from ncahill_alt at yahoo dot com ---
(In reply to Richard Biener from comment #15)
> (In reply to ncahill_alt from comment #14)
> > This test is failing for me in GCC 6.1.0 (i386).  It complains about having
> > no vectype.
> > 
> > Why that is, I don't know.  But it doesn't seem to be a problem otherwise,
> > it seems pretty safe to ignore except that it could vectorize the loop but
> > doesn't.
> > 
> > I wonder if it would be easier just to have this be UNSUPPORTED on i386.
> 
> It should be by means of the { dg-require-effective-target vect_double }
> directive.  Does it work if you remove the { dg-options ... } one?

It does, the test still runs but the result is a pass.  If I place the
dg-options line below the require-target line, it fails.