re PR tree-optimization/41118 (Wrong dependence analysis in graphite for unrestricted...

re PR tree-optimization/41118 (Wrong dependence analysis in graphite for unrestricted pointers)

2009-09-17 Li Feng  <nemokingdom@gmail.com>

	PR middle-end/41118
	* graphite-dependences.c (poly_drs_may_alias_p): Adjust definition.
	(pddr_original_scattering): Make sure 2 pdr2 in the same base object set.
	(graphite_carried_dependence_level_k): Ditto.
	* graphite-poly.c (new_poly_dr): Add init of PDR_BASE_OBJECT_SET.
	* graphite-poly.h (struct poly_dr): Add member dr_base_object_set.
	(new_poly_dr): Adjust declaration.
	* graphite-sese-to-poly.c (free_data_refs_aux): New.
	(free_gimple_bb): Added free_data_refs_aux.
	(build_poly_dr): Add dr_base_object_set.
	(partition_drs_to_sets): New.
	(dr_same_base_object_p): New.
	(build_alias_set_for_drs): New.
	(build_base_object_set_for_drs): New.
	(build_scop_drs): Add build_base_obj_set_for_drs.
	* graphite-sese-to-poly.h: Added #define for alias set number index and
	base object set index.
	* libgomp/testsuite/libgomp.graphite/force-parallel-6.c: Refine tests.
	* libgomp/testsuite/libgomp.graphite/pr4118.c: New.

From-SVN: r154549