v8/test/webkit/dfg-inline-function-dot-caller.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 DFG inlining does not brak function.arguments.caller."
);
var callCount = 0;
var resultArray = []
function throwError() {
throw {};
}
var object = {
nonInlineable : function nonInlineable() {
if (0) return [arguments, function(){}];
if (++callCount == 999999) {
var f = nonInlineable;
while (f) {
resultArray.push(f.name);
f=f.arguments.callee.caller;
}
}
},
inlineable : function inlineable() {
this.nonInlineable();
}
}
function makeInlinableCall(o) {
for (var i = 0; i < 1000; i++)
o.inlineable();
}
function g() {
var j = 0;
for (var i = 0; i < 1000; i++) {
j++;
makeInlinableCall(object);
}
}
g();
shouldBe("resultArray.length", "4");
shouldBe("resultArray[3]", "\"g\"");
shouldBe("resultArray[2]", "\"makeInlinableCall\"");
shouldBe("resultArray[1]", "\"inlineable\"");
shouldBe("resultArray[0]", "\"nonInlineable\"");