v8/test/mjsunit/compiler/inline-omit-arguments.js

// 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 x = 42;
function bar(s, t, u, v) { return x + s; }
function foo(s, t) { return bar(s); }

%PrepareFunctionForOptimization(foo);
%OptimizeFunctionOnNextCall(foo);
assertEquals(42 + 12, foo(12));