test/webkit/dfg-captured-var-get-local.js

// 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:
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// 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.
//
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// 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
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description(
"Tests that GetLocals on captured variables aren't eliminated too aggressively."
);

function foo() {
    var x;
    (function(){
        x = 42;
        x = 42;
        x = 42;
        x = 42;
        x = 42;
        x = 42;
        x = 42;
        x = 42;
        x = 42;
        x = 42;
        x = 42;
        x = 42;
        x = 42;
        x = 42;
        x = 42;
        x = 42;
        x = 42;
        x = 42;
        x = 42;
        x = 42;
        x = 42;
        x = 42;
        x = 42;
        x = 42;
        x = 42;
        x = 42;
        x = 42;
        x = 42;
        x = 42;
        x = 42;
        x = 42;
        x = 42;
        x = 42;
        x = 42;
        x = 42;
        x = 42;
        x = 42;
        x = 42;
        x = 42;
        x = 42;
        x = 42;
        x = 42;
        x = 42;
        x = 42;
        x = 42;
        x = 42;
        x = 42;
        x = 42;
        x = 42;
        x = 42;
        x = 42;
        x = 42;
        x = 42;
        x = 42;
        x = 42;
        x = 42;
        x = 42;
        x = 42;
        x = 42;
        x = 42;
        x = 42;
        x = 42;
        x = 42;
        x = 42;
    })();
    var y = x;
    return y;
}

for (var i = 0; i < 100; ++i)
    shouldBe("foo()", "42");