ece2746346
I.e., implement the Maglev handler for the FindNonDefaultConstructor bytecode. Bug: v8:13091 Change-Id: I6d9905227875fe4efd460434b650fc48d008e7bf Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3925196 Reviewed-by: Leszek Swirski <leszeks@chromium.org> Commit-Queue: Marja Hölttä <marja@chromium.org> Cr-Commit-Position: refs/heads/main@{#83470}
34 lines
1.0 KiB
JavaScript
34 lines
1.0 KiB
JavaScript
// Copyright 2022 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: --omit-default-ctors --allow-natives-syntax --turbofan
|
|
// Flags: --no-always-turbofan
|
|
|
|
// This behavior is not spec compliant, see crbug.com/v8/13249.
|
|
(function ArrayIteratorMonkeyPatched() {
|
|
let iterationCount = 0;
|
|
const oldIterator = Array.prototype[Symbol.iterator];
|
|
Array.prototype[Symbol.iterator] =
|
|
function () { ++iterationCount; return oldIterator.call(this); };
|
|
|
|
class A {}
|
|
class B extends A {}
|
|
class C extends B {}
|
|
|
|
%PrepareFunctionForOptimization(C);
|
|
new C();
|
|
%OptimizeFunctionOnNextCall(C);
|
|
|
|
// C default ctor doing "...args" and B default ctor doing "...args".
|
|
assertEquals(2, iterationCount);
|
|
|
|
new C();
|
|
|
|
// C default ctor doing "...args" and B default ctor doing "...args".
|
|
assertEquals(4, iterationCount);
|
|
assertTrue(isTurboFanned(C)); // No deopt.
|
|
|
|
Array.prototype[Symbol.iterator] = oldIterator;
|
|
})();
|