2015-12-10  Richard Biener  <rguenther@suse.de>

	* tree-ssa-structalias.c (struct variable_info): Add
	is_ipa_escape_point flag.
	(new_var_info): Initialize to false.
	(find_func_aliases): Generate escape constraints for stores
	properly in IPA mode.
	(ipa_pta_execute): Compute is_ipa_escape_point for globals.

From-SVN: r231514