2018-10-09  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/63155
	* tree-ssa-structalias.c: Include tree-ssa.h.
	(get_constraint_for_ssa_var): For undefs return nothing_id.
	(find_func_aliases): Cleanup PHI handling.

From-SVN: r264956