[polly] Add diagnostic remark for ReportVariantBasePtr

[Andreas Simbuerger]

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At the moment the DebugLoc is derived from the BaseValue.
I'm not 100% sure if the resulting DebugLoc corresponds to the
A or the (A->b) BaseValue.
As far as I can tell, both would map to the same source location in
the debug-metadata.

Cheers,
Andreas

On 06/26/2014 02:32 PM, Tobias Grosser wrote:
> On 26/06/2014 13:54, Andreas Simbuerger wrote:
>> This adds a diagnostic remark for variant base pointers found
>> inside loops.
>> 
>> Question: I'm not sure how to enhance the precision of the
>> diagnostic remark because the debug information gathered in the
>> test case is very limited. Has someone an idea how to generate &
>> find debug info that delivers more precise information than
>> 'somewhere in this assignment'?
> 
> Very nice. I like such kind of incremental/small patches.
> 
> To my understanding there should be debug info on the base pointer
> that gives you the name of the Pointer 'A' (not by looking at the
> LLVM-IR name, but the name in the original source code).
> 
> You might also be able to find column infos, but that may not
> always be available.
> 
> It already looks good to me, but if you feel like extending the 
> precision of this, you are very much invited to do so.
> 
> Cheers, Tobias
> 

- -- 
Andreas Simbürger
University of Passau - Programming Group
http://www.infosun.fim.uni-passau.de/cl/staff/simbuerger/

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