[testcase] optimization/5076: gcc3 regression: yet another strength reduction bug

[law@redhat.com]

> On Wednesday 02 January 2002 20:31, Gwenole Beauchesne wrote:
> > On 11 Dec 2001 gbeauchesne@mandrakesoft.com wrote:
> > > The attached test case is extracted/reduced from PR 2847 that was
> > > closed earlier. gcc3 series compilers are affected, unlike gcc-2.95.X.
> > > (gcc-"2.96" is affected too).
> >
> > Here is another testcase exhibing a strength reduction bug occurring with
> > FSF gcc 3.0.3 and binutils 2.11.92.0.12-2mdk (based on RH 2.11.92.0.12-8)
> > on i586-mandrake-linux-gnu. Also occurs with gcc 3.0.3 on IA-64 and with
> > mainline gcc (3.1 20020102) on IA-32. This is a regression from gcc
> > 2.95.X.
> >
> > Testcase is derived from PR optimization/5076 and PR optimization/2847.
> >
> > 2002-01-02  Gwenole Beauchesne  <gbeauchesne@mandrakesoft.com>
> >
> > 	PR optimization/5076, PR optimization/2847
> > 	* gcc.c-torture/execute/loop-10.c: New test.
I went ahead and checked in this testcase.  

jeff