[3.2, mainline] fix spec2000 sixtrack misscompilation

[Toon Moene]

Jan Hubicka wrote:

>>>this patch fixes latent bug (exhibiting in 3.2.x too) that causes us to
>>>misscompile sixtrack from SPEC2000.

>>I wrote:

>>That's a strange definition of "latent" you're using ...

> The bug is there since Richard's new aliasing code went in. It is more
> than year, so I guess it classify.

Ah, I see - you know when the faulty code was applied :-)

>>>The problem is that sixtrack uses global
>>>variables as iteration counters

>>Ah, would this fix perchance happen to cure GNATS entry fortran/7278 too ?
>>
>>If so, could you please close that bug report ?

> It looks like same problem.  I can't test right now, but I will do so
> in case the patch will be approved.  I think it is better to close the
> bugreports once the patch goes in so the bugfix doesn't get lost.

Agree.

Thanks for fixing this !

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