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Re: [graphite] Weekly phone call notes
On Wed, Apr 29, 2009 at 16:57, Richard Guenther
<richard.guenther@gmail.com> wrote:
>>
>> Â Â Â* Reductions: Diego OK with going out of SSA.
>
> You will loose all points-to information. ÂI think going out of SSA is
> a very bad idea.
>
There is no loss of information: we go out of SSA only for scalar phi
nodes that cannot be represented by scev: for each phi node we
introduce an array with one element. These arrays are eliminated
after graphite by a scalar cleanup and we obtain again the program
in SSA form.
Handling reductions in SSA form is not an option for the moment.
Sebastian