On Wed, May 18, 2016 at 2:29 PM, Wilco Dijkstra <wilco.dijks...@arm.com> wrote:
> Richard Biener wrote:
>>
>> Yeah ;)  I'm currently bootstrapping/testing the patch that makes it 
>> possible to
>> write all this in match.pd.
>
> So what was the conclusion? Improving match.pd to be able to handle more cases
> like this seems like a nice thing.

I'm stuck with fallout and making this work requires some serious
thought.  Don't
hold your breath here :/

The restricted case of strchr (a, 0) -> strlen () can be made working
more easily
but I didn't yet try to implement a restriction only allowing the
cases that would work.

Meanwhile the strlenopt pass would be an appropriate place to handle
this transform
(well, if we now agree on its usefulness).

Richard.

>
> Wilco
>

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