tree-ssa-structalias.c (final_solutions, [...]): New pointer-map and obstack.

tree-ssa-structalias.c (final_solutions, [...]): New pointer-map and obstack.

2013-01-30  Richard Biener  <rguenther@suse.de>

	* tree-ssa-structalias.c (final_solutions, final_solutions_obstack):
	New pointer-map and obstack.
	(init_alias_vars): Allocate pointer-map and obstack.
	(delete_points_to_sets): Free them.
	(find_what_var_points_to): Cache result.
	(find_what_p_points_to): Adjust for changed interface of
	find_what_var_points_to.
	(compute_points_to_sets): Likewise.
	(ipa_pta_execute): Likewise.

From-SVN: r195573