nodejs/deps/v8/test/mjsunit/maglev/string-wrapper-add-2.js
Michaël Zasso 918fe04351
deps: update V8 to 13.6.233.8
PR-URL: https://github.com/nodejs/node/pull/58070
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Darshan Sen <raisinten@gmail.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com>
2025-05-02 15:06:53 +02:00

27 lines
675 B
JavaScript

// 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 --maglev --no-always-turbofan
var stringWrapper = new String('constant');
function add(a) {
return a + stringWrapper;
}
%PrepareFunctionForOptimization(add);
const string = 'first';
assertEquals('firstconstant', add(string));
%OptimizeMaglevOnNextCall(add);
assertEquals('firstconstant', add(string));
assertTrue(isMaglevved(add));
// Invalidate the protector.
stringWrapper.valueOf = () => 'value';
assertUnoptimized(add);
assertEquals('firstvalue', add(string));