[COMMITTED] [range-ops] Handle bitmasks for ABS_EXPR.

[Aldy Hernandez via Gcc-patches]

gcc/ChangeLog:

        * range-op-mixed.h (class operator_abs): Add update_bitmask.
        * range-op.cc (operator_abs::update_bitmask): New.
---
 gcc/range-op-mixed.h | 2 ++
 gcc/range-op.cc      | 6 ++++++
 2 files changed, 8 insertions(+)

diff --git a/gcc/range-op-mixed.h b/gcc/range-op-mixed.h
index ead41ed0515..70550c52232 100644
--- a/gcc/range-op-mixed.h
+++ b/gcc/range-op-mixed.h
@@ -408,6 +408,8 @@ class operator_abs : public range_operator
   bool op1_range (frange &r, tree type,
                  const frange &lhs, const frange &op2,
                  relation_trio rel = TRIO_VARYING) const final override;
+  void update_bitmask (irange &r, const irange &lh,
+                      const irange &rh) const final override;
 private:
   void wi_fold (irange &r, tree type, const wide_int &lh_lb,
                const wide_int &lh_ub, const wide_int &rh_lb,
diff --git a/gcc/range-op.cc b/gcc/range-op.cc
index 13ba973a08d..bfab53caea0 100644
--- a/gcc/range-op.cc
+++ b/gcc/range-op.cc
@@ -4208,6 +4208,12 @@ operator_abs::op1_range (irange &r, tree type,
   return true;
 }
 
+void
+operator_abs::update_bitmask (irange &r, const irange &lh,
+                             const irange &rh) const
+{
+  update_known_bitmask (r, ABS_EXPR, lh, rh);
+}
 
 class operator_absu : public range_operator
 {
-- 
2.41.0