Improve alias dump info

Improve alias dump info

2015-10-28  Tom de Vries  <tom@codesourcery.com>

	* tree-ssa-structalias.c (new_var_info, make_heapvar)
	(make_constraint_from_restrict, make_constraint_from_global_restrict)
	(create_function_info_for, create_variable_info_for_1)
	(create_variable_info_for): Add and handle add_id parameter.
	(get_call_vi, new_scalar_tmp_constraint_exp, handle_rhs_call)
	(init_base_vars): Add extra argument to calls to new_var_info.
	(get_vi_for_tree): Add extra argument to call to
	create_variable_info_for.
	(process_constraint, do_deref, process_all_all_constraints): Add extra
	argument to calls to new_scalar_tmp_constraint_exp.
	(handle_lhs_call, find_func_aliases_for_builtin_call): Add extra
	argument to calls to make_heapvar.
	(make_restrict_var_constraints): Add extra argument to call to
	make_constraint_from_global_restrict.
	(intra_create_variable_infos): Add extra argument to call to
	create_variable_info_for_1.
	(ipa_pta_execute): Add extra argument to call to
	create_function_info_for.

	* gcc.dg/tree-ssa/pta-callused.c: Update to scan for CALLUSED(id).

From-SVN: r229489