v8/test/mjsunit/regress/polymorphic-accessor-test-context.js

// 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 t1() { return this instanceof t1; }
function t2() { return this instanceof t2; }

var o1 = new (function() { })();
Object.defineProperty(o1, "t", {get:function() { return this instanceof o1.constructor; }});
var o2 = new (function() { })();
Object.defineProperty(o2, "t", {get:function() { return this instanceof o1.constructor; }});
var o3 = new (function() { })();
o3.t = true;

function f(o) {
  return 1 + (o.t ? 1 : 2);
}

f(o1);
f(o1);
f(o2);
%OptimizeFunctionOnNextCall(f);
f(o3);