* vr-values.h: New file with vr_values class.

	* vr-values.h: New file with vr_values class.
	* tree-vrp.c: Include vr-values.h
	(vrp_value_range_pool, vrp_equiv_obstack, num_vr_values): Move static
	data objects into the vr_values class.
	(vr_value, values_propagated, vr_phi_edge_counts): Likewise.
	(get_value_range): Make it a member function within vr_values class.
	(set_defs_to_varying, update_value_range, add_equivalence): Likewise.
	(vrp_stmt_computes_nonzero_p, op_with_boolean_value_range_p): Likewise.
	(op_with_constant_singleton_value_range): Likewise.
	(extract_range_for_var_from_comparison_expr): Likewise.
	(extract_range_from_assert, extract_range_from_ssa_name): Likewise.
	(extract_range_from_binary_expr): Likewise.
	(extract_range_from_unary_expr): Likewise.
	(extract_range_from_cond_expr, extrat_range_from_comparison): Likewise.
	(check_for_binary_op_overflow, extract_range_basic): Likewise.
	(extract_range_from_assignment, adjust_range_with_scev): Likewise.
	(dump_all_value_ranges, get_vr_for_comparison): Likewise.
	(compare_name_with_value, compare_names): Likewise.
	(vrp_evaluate_conditional_warnv_with_ops_using_ranges): Likewise.
	(vrp_evaluate_conditional_warnv_with_ops): Likewise.  Remove prototype.
	(vrp_evaluate_conditional, vrp_visit_cond_stmt): Likewise.
	(vrp_visit_switch_stmt, extract_range_from_stmt): Likewise.
	(extract_range_from_phi_node): Likewise.
	(simplify_truth_ops_using_ranges): Likewise.
	(simplify_div_or_mod_using_ranges): Likewise.
	(simplify_min_or_max_using_ranges, simplify_abs_using_ranges): Likewise.
	(simplify_bit_ops_using_ranges, simplify_cond_using_ranges_1): Likewise.
	(simplify_cond_using_ranges_2, simplify_switch_using_ranges): Likewise.
	(simplify_float_conversion_using_ranges): Likewise.
	(simplify_internal_call_using_ranges): Likewise.
	(two_valued_val_range_p, simplify_stmt_using_ranges): Likewise.
	(vrp_visit_assignment_or_call): Likewise.  Smuggle class instance
	poitner via x_vr_values for calls into gimple folder.
	(vrp_initialize_lattice): Make this the vr_values ctor.
	(vrp_free_lattice): Make this the vr_values dtor.
	(set_vr_value): New function.
	(class vrp_prop): Add vr_values data member.  Add various member
	functions as well as member functions that delegate to vr_values.
	(check_array_ref): Make a member function within vrp_prop class.
	(search_for_addr_array, vrp_initialize): Likewise.
	(vrp_finalize): Likewise.  Revamp to avoid direct access to
	vr_value, values_propagated, etc.
	(check_array_bounds): Extract vrp_prop class instance pointer from
	walk info structure.  Use it to call member functions.
	(check_all_array_refs): Make a member function within vrp_prop class.
	Smuggle class instance pointer via walk info structure.
	(x_vr_values): New local static.
	(vrp_valueize): Use x_vr_values to get class instance.
	(vr_valueize_1): Likewise.
	(class vrp_folder): Add vr_values data member.  Add various member
	functions as well as member functions that delegate to vr_values.
	(fold_predicate_in): Make a mber fucntion within vrp_folder class.
	(simplify_stmt_for_jump_threading): Extract smuggled vr_values
	class instance from vr_values.  Use it to call member functions.
	(vrp_dom_walker): Add vr_values data member.
	(vrp_dom_walker::after_dom_children): Smuggle vr_values class
	instance via x_vr_values.
	(identify_jump_threads): Accept vr_values as argument.  Store
	it into the walker structure.
	(evrp_dom_walker): Add vr_values class data member.  Add various
	delegators.
	(evrp_dom_walker::try_find_new_range): Use vr_values data
	member to access the memory allocator.
	(evrp_dom_walker::before_dom_children): Store vr_values class
	instance into the vrp_folder class.
	(evrp_dom_walker::push_value_range): Rework to avoid direct
	access to num_vr_values and vr_value.
	(evrp_dom_walker::pop_value_range): Likewise.
	(execute_early_vrp): Remove call to vrp_initialize_lattice.
	Use vr_values to get to dump_all_value_ranges member function.
	Remove call to vrp_free_lattice.  Call vrp_initialize, vrp_finalize,
	and simplify_cond_using_ranges_2 via vrp_prop class instance.
	Pass vr_values class instance down to identify_jump_threads.
	Remove call to vrp_free_lattice.
	(debug_all_value_ranges): Remove.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@254613 138bc75d-0d04-0410-961f-82ee72b054a4