[polly] r174894 - [isl-codegen]: Fix off by one in getNumberOfIterations

[Sebastian Pop]

Tobias Grosser wrote:
> dimensions are unnamed, all dimensions are identical. If you remove
> the first or the second, at the end you will have a space with one
> dimension less than the input space.

Ok, thanks for the explanation.

> Yes, please test. I can not imagine any problem, but it's good if
> you test it.

I just started my test and will let you know if I see regressions.

Another point that could be addressed: instead of

    Space = isl_space_drop_outputs(Space, Dim - 1, 1);

you should use the documented ISL function

    Space = isl_space_drop_dims(Space, isl_dim_out, Dim - 1, 1);

Thanks,
Sebastian
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