node/deps/v8/test/mjsunit/compiler/instanceof-opt3.js
Michaël Zasso c459d8ea5d deps: update V8 to 5.7.492.69
PR-URL: https://github.com/nodejs/node/pull/11752
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Franziska Hinkelmann <franziska.hinkelmann@gmail.com>
2017-03-25 09:44:10 +01:00

18 lines
545 B
JavaScript

// Copyright 2016 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
function Bar() {}
var Foo = Bar.bind(null);
// TurboFan will optimize this to false via constant-folding the
// OrdinaryHasInstance call inside Function.prototype[@@hasInstance].
function foo() { return 1 instanceof Foo; }
assertEquals(false, foo());
assertEquals(false, foo());
%OptimizeFunctionOnNextCall(foo);
assertEquals(false, foo());