v8/test/webkit/dfg-string-stricteq.js

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// Copyright 2013 the V8 project authors. All rights reserved.
// Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
// ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
description(
"Tests that the DFG does the right thing on strict equality for known strings."
);
function foo(a, b) {
a = a.f;
b = b.f;
var c = a.length + b.length;
return [c, a === b];
}
function bar(a, b) {
a = a.f;
b = b.f;
var c = a.length + b.length;
if (a === b)
return c + 1;
else
return c - 1;
}
for (var i = 0; i < 1000; ++i) {
var a = "blah" + i;
var b = "blah" + (1000 - i);
var areEqual = i == 500;
shouldBe("foo({f:\"" + a + "\"}, {f:\"" + b + "\"})", "[" + (a.length + b.length) + ", " + areEqual + "]");
shouldBe("bar({f:\"" + a + "\"}, {f:\"" + b + "\"})", "" + (areEqual ? a.length + b.length + 1 : a.length + b.length - 1));
}