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

[Aldy Hernandez via Gcc-patches]

gcc/ChangeLog:

        * range-op-mixed.h (class operator_bitwise_not): Add update_bitmask.
        * range-op.cc (operator_bitwise_not::update_bitmask): New.
---
 gcc/range-op-mixed.h | 2 ++
 gcc/range-op.cc      | 7 +++++++
 2 files changed, 9 insertions(+)

diff --git a/gcc/range-op-mixed.h b/gcc/range-op-mixed.h
index 6944742ecbc..ead41ed0515 100644
--- a/gcc/range-op-mixed.h
+++ b/gcc/range-op-mixed.h
@@ -551,6 +551,8 @@ public:
   bool op1_range (irange &r, tree type,
                  const irange &lhs, const irange &op2,
                  relation_trio rel = TRIO_VARYING) const final override;
+  void update_bitmask (irange &r, const irange &lh,
+                      const irange &rh) const final override;
 };
 
 class operator_bitwise_xor : public range_operator
diff --git a/gcc/range-op.cc b/gcc/range-op.cc
index d959a3e93dc..13ba973a08d 100644
--- a/gcc/range-op.cc
+++ b/gcc/range-op.cc
@@ -4027,6 +4027,13 @@ operator_bitwise_not::op1_range (irange &r, tree type,
   return fold_range (r, type, lhs, op2);
 }
 
+void
+operator_bitwise_not::update_bitmask (irange &r, const irange &lh,
+                                     const irange &rh) const
+{
+  update_known_bitmask (r, BIT_NOT_EXPR, lh, rh);
+}
+
 
 bool
 operator_cst::fold_range (irange &r, tree type ATTRIBUTE_UNUSED,
-- 
2.41.0