Convert vr-values to value query class.

Convert vr-values to value query class.

gcc/ChangeLog:

	* gimple-loop-versioning.cc (lv_dom_walker::before_dom_children):
	Pass m_range_analyzer instead of get_vr_values.
	(loop_versioning::name_prop::get_value): Rename to...
	(loop_versioning::name_prop::value_of_expr): ...this.
	* gimple-ssa-evrp-analyze.c (evrp_range_analyzer::evrp_range_analyzer):
	Adjust for evrp_range_analyzer
	inheriting from vr_values.
	(evrp_range_analyzer::try_find_new_range): Same.
	(evrp_range_analyzer::record_ranges_from_incoming_edge): Same.
	(evrp_range_analyzer::record_ranges_from_phis): Same.
	(evrp_range_analyzer::record_ranges_from_stmt): Same.
	(evrp_range_analyzer::push_value_range): Same.
	(evrp_range_analyzer::pop_value_range): Same.
	* gimple-ssa-evrp-analyze.h (class evrp_range_analyzer): Inherit from
	vr_values.  Adjust accordingly.
	* gimple-ssa-evrp.c: Adjust for evrp_range_analyzer inheriting from
	vr_values.
	(evrp_folder::value_of_evrp): Rename from get_value.
	* tree-ssa-ccp.c (class ccp_folder): Rename get_value to
	value_of_expr.
	(ccp_folder::get_value): Rename to...
	(ccp_folder::value_of_expr): ...this.
	* tree-ssa-copy.c (class copy_folder): Rename get_value to
	value_of_expr.
	(copy_folder::get_value): Rename to...
	(copy_folder::value_of_expr): ...this.
	* tree-ssa-dom.c (dom_opt_dom_walker::after_dom_children): Adjust
	for evrp_range_analyzer inheriting from vr_values.
	(dom_opt_dom_walker::optimize_stmt): Same.
	* tree-ssa-propagate.c (substitute_and_fold_engine::replace_uses_in):
	Call value_of_* instead of get_value.
	(substitute_and_fold_engine::replace_phi_args_in): Same.
	(substitute_and_fold_engine::propagate_into_phi_args): Same.
	(substitute_and_fold_dom_walker::before_dom_children): Same.
	* tree-ssa-propagate.h: Include value-query.h.
	(class substitute_and_fold_engine): Inherit from value_query.
	* tree-ssa-strlen.c (strlen_dom_walker::before_dom_children):
	Adjust for evrp_range_analyzer inheriting from vr_values.
	* tree-ssa-threadedge.c (record_temporary_equivalences_from_phis):
	Same.
	* tree-vrp.c (class vrp_folder): Same.
	(vrp_folder::get_value): Rename to value_of_expr.
	* vr-values.c (vr_values::get_lattice_entry): Adjust for
	vr_values inheriting from range_query.
	(vr_values::range_of_expr): New.
	(vr_values::value_of_expr): New.
	(vr_values::value_on_edge): New.
	(vr_values::value_of_stmt): New.
	(simplify_using_ranges::op_with_boolean_value_range_p): Call
	get_value_range through query.
	(check_for_binary_op_overflow): Rename store to query.
	(vr_values::vr_values): Remove vrp_value_range_pool.
	(vr_values::~vr_values): Same.
	(simplify_using_ranges::get_vr_for_comparison): Call get_value_range
	through query.
	(simplify_using_ranges::compare_names): Same.
	(simplify_using_ranges::vrp_evaluate_conditional): Same.
	(simplify_using_ranges::vrp_visit_cond_stmt): Same.
	(simplify_using_ranges::simplify_abs_using_ranges): Same.
	(simplify_using_ranges::simplify_cond_using_ranges_1): Same.
	(simplify_cond_using_ranges_2): Same.
	(simplify_using_ranges::simplify_switch_using_ranges): Same.
	(simplify_using_ranges::two_valued_val_range_p): Same.
	(simplify_using_ranges::simplify_using_ranges): Rename store to query.
	(simplify_using_ranges::simplify): Assert that we have a query.
	* vr-values.h (class range_query): Remove.
	(class simplify_using_ranges): Remove inheritance of range_query.
	(class vr_values): Add virtuals for range_of_expr, value_of_expr,
	value_on_edge, value_of_stmt, and get_value_range.
	Call range_query allocator instead of using vrp_value_range_pool.
	Remove vrp_value_range_pool.
	(simplify_using_ranges::get_value_range): Remove.