re PR tree-optimization/80928 (SLP vectorization does not handle induction in outer loop vectorization)

2017-06-06  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/80928
	* tree-vect-loop.c (vect_update_vf_for_slp): Amend dumps.
	(vect_analyze_loop_operations): Properly guard analysis for
	pure SLP case.
	(vect_transform_loop): Likewise.
	(vect_analyze_loop_2): Also reset SLP type on PHIs.
	(vect_model_induction_cost): Do not cost for pure SLP.
	(vectorizable_induction): Pass in SLP node, implement SLP vectorization
	of induction in inner loop vectorization.
	* tree-vect-slp.c (vect_create_new_slp_node): Handle PHIs.
	(vect_get_and_check_slp_defs): Handle vect_induction_def.
	(vect_build_slp_tree): Likewise.  Handle PHIs as terminating the
	recursion.
	(vect_analyze_slp_cost_1): Cost induction.
	(vect_detect_hybrid_slp_stmts): Handle PHIs.
	(vect_get_slp_vect_defs): Likewise.
	* tree-vect-stmts.c (vect_analyze_stmt): Handle induction.
	(vect_transform_stmt): Handle SLP reductions.
	* tree-vectorizer.h (vectorizable_induction): Adjust.

	* gcc.dg/vect/pr80928.c: New testcase.
	* gcc.dg/vect/slp-13-big-array.c: Remove XFAILs.
	* gcc.dg/vect/slp-13.c: Likewise.
	* gcc.dg/vect/slp-perm-9.c: Prevent vectorization of check loop.

From-SVN: r248909