[PATCH testcase/rs6000] Add testcase for PR 7003

[Andrew Pinski]

On 9/27/07, Andrew_Pinski@playstation.sony.com
<Andrew_Pinski@playstation.sony.com> wrote:
> Hi,
>   Since Eric Christopher is talking about removing gcse, I found a bug
> report about where GCSE still does something useful (and was only changed
> revently, 4.2.0).  The reason why GCSE still does something useful is
> because addresses are not split until RTL level so tree level PRE does not
> see that.  And then this is a global issue as there are conditionals in
> the testcase so CSE cannot catch it.
>
> OK?  Tested on powerpc64-linux-gnu with -m32 and -m64.

Applied after approval from David Edelsohn offline.

Thanks,
Andrew Pinski