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Diffstat (limited to 'deps/v8/test/webkit/dfg-weak-js-constant-silent-fill.js')
| -rw-r--r-- | deps/v8/test/webkit/dfg-weak-js-constant-silent-fill.js | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/deps/v8/test/webkit/dfg-weak-js-constant-silent-fill.js b/deps/v8/test/webkit/dfg-weak-js-constant-silent-fill.js new file mode 100644 index 0000000000..fa06a905bc --- /dev/null +++ b/deps/v8/test/webkit/dfg-weak-js-constant-silent-fill.js @@ -0,0 +1,48 @@ +// 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 silent spill and fill of WeakJSConstants does not result in nonsense." +); + +function foo(a, b, c, d) +{ + a.f = 42; // WeakJSConstants corresponding to the o.f transition get created here. + var x = !d; // Silent spilling and filling happens here. + b.f = x; // The WeakJSConstants get reused here. + var y = !d; // Silent spilling and filling happens here. + c.f = y; // The WeakJSConstants get reused here. +} + +var Empty = ""; + +for (var i = 0; i < 1000; ++i) { + var o1 = new Object(); + var o2 = new Object(); + var o3 = new Object(); + eval(Empty + "foo(o1, o2, o3, \"stuff\")"); + shouldBe("o1.f", "42"); + shouldBe("o2.f", "false"); + shouldBe("o3.f", "false"); +} + |