From: Aldy Hernandez <aldyh@redhat.com>
Date: Tue, 25 Jul 2023 16:34:21 +0000 (-0400)
Subject: [range-ops] Handle bitmasks for BIT_NOT_EXPR.
X-Git-Tag: basepoints/gcc-15~7361
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4a188dee6287746b58c701517cb054766565c5e1;p=thirdparty%2Fgcc.git

[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.
---

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,