re PR ipa/68331 ([meta-bug] fipa-pta issues)

re PR ipa/68331 ([meta-bug] fipa-pta issues)

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

	PR ipa/68331
	* tree-ssa-structalias.c (set_uids_in_ptset): Add fndecl
	parameter and make vars_contains_nonlocal properly have
	function-scope semantics in IPA mode.
	(find_what_var_points_to): Add fndecl parameter.
	(find_what_p_points_to): Likewise.
	(pt_solution_includes_global): Remove IPA PTA early out.
	(compute_points_to_sets): Adjust.
	(ipa_pta_execute): Likewise.  Clear final_solutions after
	each function.

	* gcc.dg/torture/ipa-pta-3.c: New testcase.
	* g++.dg/ipa/ipa-pta-1.C: Likewise.

From-SVN: r231498