From 4a188dee6287746b58c701517cb054766565c5e1 Mon Sep 17 00:00:00 2001
From: Aldy Hernandez <aldyh@redhat.com>
Date: Tue, 25 Jul 2023 12:34:21 -0400
Subject: [PATCH] [range-ops] Handle bitmasks for BIT_NOT_EXPR.
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 6944742ecbc1..ead41ed05158 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 d959a3e93dce..13ba973a08da 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,
--
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