| Index: test/mjsunit/compiler/instanceof-opt1.js
|
| diff --git a/test/mjsunit/compiler/instanceof-opt1.js b/test/mjsunit/compiler/instanceof-opt1.js
|
| new file mode 100644
|
| index 0000000000000000000000000000000000000000..6ffdfc0ab1be4df0e9e7e4a05100cdbb321aa69c
|
| --- /dev/null
|
| +++ b/test/mjsunit/compiler/instanceof-opt1.js
|
| @@ -0,0 +1,18 @@
|
| +// 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
|
| +
|
| +var Foo = {
|
| + [Symbol.hasInstance]: Function.prototype[Symbol.hasInstance]
|
| +};
|
| +
|
| +// 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());
|
|
|