Upload Kmake

deps/v8/test/mjsunit/string-wrapper-add-2.js

@@ -0,0 +1,26 @@
+// Copyright 2024 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --allow-natives-syntax --turbofan --no-always-turbofan
+
+var stringWrapper = new String('constant');
+
+function add(a) {
+  return a + stringWrapper;
+}
+%PrepareFunctionForOptimization(add);
+
+const string = 'first';
+
+assertEquals('firstconstant', add(string));
+%OptimizeFunctionOnNextCall(add);
+
+assertEquals('firstconstant', add(string));
+assertOptimized(add);
+
+// Invalidate the protector.
+stringWrapper.valueOf = () => 'value';
+
+assertUnoptimized(add);
+assertEquals('firstvalue', add(string));