[PATCH]: Fix PR tree-optimization/18792

[Daniel Berlin]

Actually, i got a chance to update it in between bootstraps.
Here ya go.


2004-12-07  Daniel Berlin  <dberlin@dberlin.org>

        * tree-data-ref.c (build_classic_dist_vector): Change first_loop
        to first_loop_depth, and use loop depth instead of loop number.
        (build_classic_dir_vector): Ditto.
        (compute_data_dependences_for_loop): Use depth, not loop number.
        * tree-loop-linear.c (try_interchange_loops): Use loop depth,
	not loop number. Pass in loops, instead of loop numbers.
        (gather_interchange_stats): Ditto.
        (linear_transform_loops): Ditto.

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