v8/test/webkit/dfg-cfa-prove-put-by-id-simple-when-storing-to-specialized-function.js

56 lines
2.0 KiB
JavaScript

// 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
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description(
"Checks that the DFG CFA does the right things if it proves that a put_by_id is a simple replace when storing to a specialized function property."
);
function foo(o, v) {
o.f = v;
}
// Warm up foo's put_by_id to make it look polymorphic.
for (var i = 0; i < 100; ++i)
foo(i % 2 ? {a: 1} : {b: 2});
function bar(f) {
foo(this, f);
return this.f();
}
function baz() {
debug("baz!");
return "baz";
}
for (var i = 0; i < 100; ++i)
shouldBe("bar.call({f:baz}, baz)", "\"baz\"");
function fuzz() {
debug("fuzz!");
return "fuzz";
}
shouldBe("bar.call({f:baz}, fuzz)", "\"fuzz\"");