[range-ops] Handle bitmasks for ABSU_EXPR.

gcc/ChangeLog:

	* range-op.cc (class operator_absu): Add update_bitmask.
	(operator_absu::update_bitmask): New.

diff --git a/gcc/range-op.cc b/gcc/range-op.cc
index bfab53caea0dbe55c2447a6db88d3a3387434dc3..5653ca0d18663aa4f0ab4f568156fa659bb77be9 100644 (file)
--- a/gcc/range-op.cc
+++ b/gcc/range-op.cc
@@ -4221,6 +4221,8 @@ class operator_absu : public range_operator
   virtual void wi_fold (irange &r, tree type,
                        const wide_int &lh_lb, const wide_int &lh_ub,
                        const wide_int &rh_lb, const wide_int &rh_ub) const;
+  virtual void update_bitmask (irange &r, const irange &lh,
+                              const irange &rh) const final override;
 } op_absu;
 
 void
@@ -4258,6 +4260,13 @@ operator_absu::wi_fold (irange &r, tree type,
   r = int_range<1> (type, new_lb, new_ub);
 }
 
+void
+operator_absu::update_bitmask (irange &r, const irange &lh,
+                             const irange &rh) const
+{
+  update_known_bitmask (r, ABSU_EXPR, lh, rh);
+}
+
 
 bool
 operator_negate::fold_range (irange &r, tree type,