tree-ssa-structalias.c: Include tree-cfg.h.

tree-ssa-structalias.c: Include tree-cfg.h.

2019-06-06  Richard Biener  <rguenther@suse.de>

	* tree-ssa-structalias.c: Include tree-cfg.h.
	(make_heapvar): Do not make heap vars artificial.
	(find_func_aliases_for_builtin_call): Handle stack allocation
	functions.
	(find_func_aliases): Delay processing of simple enough returns
	in non-IPA mode.
	(set_uids_in_ptset): Adjust.
	(find_what_var_points_to): Likewise.
	(solve_constraints): Do not dump points-to sets here.
	(compute_points_to_sets): Post-process return statements,
	amending the escaped solution.  Dump points-to sets afterwards.
	(ipa_pta_execute): Dump points-to sets.

	* gcc.dg/tree-ssa/alias-37.c: New testcase.
	* gcc.dg/torture/20190604-1.c: Likewise.
	* gcc.dg/tree-ssa/pta-callused.c: Adjust.

From-SVN: r271989