gcc/ChangeLog:

2017-05-11  Robin Dapp  <rdapp@linux.vnet.ibm.com>

	* tree-vect-data-refs.c (vect_update_misalignment_for_peel): Change
	comment and rename variable.
	(vect_get_peeling_costs_all_drs): New function.
	(vect_peeling_hash_get_lowest_cost): Use.
	(vect_peeling_supportable): New function.
	(vect_enhance_data_refs_alignment): Use.