Javascript  |  13行  |  287 B

// Copyright 2014 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 f() { [].lastIndexOf(42); }

f();
f();
%OptimizeFunctionOnNextCall(f);
f();