Convert users of legacy API to get_legacy_range() function.

This patch converts the users of the legacy API to a function called
get_legacy_range() which will return the pieces of the soon to be
removed API (min, max, and kind).  This is a temporary measure while
these users are converted.

In upcoming patches I will convert most users, but most of the
middle-end warning uses will remain.  Naive attempts to remove them
showed that a lot of these uses are quite dependant on the anti-range
idiom, and converting them to the new API broke the tests, even when
the conversion was conceptually correct.  Perhaps someone who
understands these passes could take a stab at it.  In the meantime,
the legacy uses can be trivially found by grepping for
get_legacy_range.

gcc/ChangeLog:

	* builtins.cc (determine_block_size): Convert use of legacy API to
	get_legacy_range.
	* gimple-array-bounds.cc (check_out_of_bounds_and_warn): Same.
	(array_bounds_checker::check_array_ref): Same.
	* gimple-ssa-warn-restrict.cc
	(builtin_memref::extend_offset_range): Same.
	* ipa-cp.cc (ipcp_store_vr_results): Same.
	* ipa-fnsummary.cc (set_switch_stmt_execution_predicate): Same.
	* ipa-prop.cc (struct ipa_vr_ggc_hash_traits): Same.
	(ipa_write_jump_function): Same.
	* pointer-query.cc (get_size_range): Same.
	* tree-data-ref.cc (split_constant_offset): Same.
	* tree-ssa-strlen.cc (get_range): Same.
	(maybe_diag_stxncpy_trunc): Same.
	(strlen_pass::get_len_or_size): Same.
	(strlen_pass::count_nonzero_bytes_addr): Same.
	* tree-vect-patterns.cc (vect_get_range_info): Same.
	* value-range.cc (irange::maybe_anti_range): Remove.
	(get_legacy_range): New.
	(irange::copy_to_legacy): Use get_legacy_range.
	(ranges_from_anti_range): Same.
	* value-range.h (class irange): Remove maybe_anti_range.
	(get_legacy_range): New.
	* vr-values.cc (check_for_binary_op_overflow): Convert use of
	legacy API to get_legacy_range.
	(compare_ranges): Same.
	(compare_range_with_value): Same.
	(bounds_of_var_in_loop): Same.
	(find_case_label_ranges): Same.
	(simplify_using_ranges::simplify_switch_using_ranges): Same.

1 files changed, 2 insertions, 1 deletions

diff --git a/gcc/value-range.h b/gcc/value-range.h
index 2442f8e..c1474a7 100644
--- a/gcc/value-range.h
+++ b/gcc/value-range.h
@@ -118,6 +118,7 @@ namespace inchash
 
 class GTY((user)) irange : public vrange
 {
+  friend value_range_kind get_legacy_range (const irange &, tree &, tree &);
   friend class vrange_allocator;
   friend class irange_storage_slot; // For legacy_mode_p checks.
 public:
@@ -197,7 +198,6 @@ protected:
   wide_int legacy_lower_bound (unsigned = 0) const;
   wide_int legacy_upper_bound (unsigned) const;
   int value_inside_range (tree) const;
-  bool maybe_anti_range () const;
   void copy_to_legacy (const irange &);
   void copy_legacy_to_multi_range (const irange &);
 
@@ -672,6 +672,7 @@ irange::legacy_mode_p () const
 extern bool range_has_numeric_bounds_p (const irange *);
 extern bool ranges_from_anti_range (const value_range *,
 				    value_range *, value_range *);
+extern value_range_kind get_legacy_range (const irange &, tree &min, tree &max);
 extern void dump_value_range (FILE *, const vrange *);
 extern bool vrp_val_is_min (const_tree);
 extern bool vrp_val_is_max (const_tree);