diff options
Diffstat (limited to 'deps/v8/test/mjsunit/compiler/instanceof-opt3.js')
-rw-r--r-- | deps/v8/test/mjsunit/compiler/instanceof-opt3.js | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/deps/v8/test/mjsunit/compiler/instanceof-opt3.js b/deps/v8/test/mjsunit/compiler/instanceof-opt3.js new file mode 100644 index 0000000000..3317d8acf4 --- /dev/null +++ b/deps/v8/test/mjsunit/compiler/instanceof-opt3.js @@ -0,0 +1,17 @@ +// 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()); |