[polly] r230528 - Update isl to 0980603 'isl_tab_pip.c: parallel_constraints: drop useless assignment'

[Tobias Grosser]

On 25.02.2015 20:34, Tobias Grosser wrote:
> Author: grosser
> Date: Wed Feb 25 13:34:52 2015
> New Revision: 230528
>
> URL: http://llvm.org/viewvc/llvm-project?rev=230528&view=rev
> Log:
> Update isl to 0980603 'isl_tab_pip.c: parallel_constraints: drop useless assignment'
>
> This update contains:
>
>    - Fixes of minor issues detected by clang's scan_build
>    - More schedule tree infrastructure additions
>
> This update slightly changes the output of our dependence analysis, but these
> changes are purely syntactially.

This change also slightly reduced compile-time with Polly. The largest 
changes are a 17% reduction on oourafft and one 9% reduction on symm. 
The remaining changes are mostly around 3-5%:

http://llvm.org/perf/db_default/v4/nts/22382?num_comparison_runs=0&test_filter=&test_min_value_filter=&aggregation_fn=median&MW_confidence_lv=0.05&compare_to=22343&submit=Update

Cheers,
Tobias