Correct the lexicographical function, add debug_pddr.

Correct the lexicographical function, add debug_pddr.

2010-02-03  Sebastian Pop  <sebastian.pop@amd.com>

	* graphite-dependences.c (new_poly_ddr): Initialize PDDR_KIND and
	PDDR_ORIGINAL_SCATTERING_P.
	(pddr_is_empty): Rewritten.
	(print_dependence_polyhedron_layout): New.
	(print_pddr): New.
	(debug_pddr): New.
	(build_alias_set_powerset): Moved up.
	(poly_drs_may_alias_p): Moved up.
	(lexicographically_gt_p): Removed.
	(build_lexicographically_gt_constraint): Renamed
	build_lexicographical_constraint, reimplemented.
	(dependence_polyhedron_1): Simplified parameters.
	(dependence_polyhedron): Same.  Keep along empty PDDRs
	to make efficient use of the cache.
	(reduction_dr_p): Compute the PBBs don't pass them as parameters.
	(graphite_legal_transform_dr): Rewritten.
	(graphite_legal_transform_bb): Pass fewer arguments to
	graphite_legal_transform_dr.
	(graphite_carried_dependence_level_k): Simplified implementation.
	(dot_original_deps_stmt_1): Call dependence_polyhedron.
	(dot_transformed_deps_stmt_1): Same.
	(dot_original_deps): Same.
	(dot_transformed_deps): Same.
	* graphite-dependences.h (struct poly_ddr): Added a new field
	original_scattering_p.
	(PDDR_ORIGINAL_SCATTERING_P): New.
	(print_pddr): Declared.
	(debug_pddr): Declared.
	* graphite-ppl.c: Clarify comment.
	* sese.h (print_gimple_bb): Removed unused declaration.
	(debug_gbb): Same.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/graphite@156474 138bc75d-0d04-0410-961f-82ee72b054a4