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Diffstat (limited to 'deps/v8/test/webkit/dfg-proven-sqrt-backwards-propagation.js')
-rw-r--r-- | deps/v8/test/webkit/dfg-proven-sqrt-backwards-propagation.js | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/deps/v8/test/webkit/dfg-proven-sqrt-backwards-propagation.js b/deps/v8/test/webkit/dfg-proven-sqrt-backwards-propagation.js new file mode 100644 index 0000000000..5bc66d945d --- /dev/null +++ b/deps/v8/test/webkit/dfg-proven-sqrt-backwards-propagation.js @@ -0,0 +1,50 @@ +// 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 knows that a Math.sqrt could potentially use value in arbitrary ways, and not just in a context that converts values to numbers." +); + +function foo(array, i) { + var x = array[i]; + return Math.sqrt(x); +} + +function bar(value) { + return value; +} + +for (var i = 0; i < 200; ++i) { + if (i == 190) + Math.sqrt = bar; + var array, expected; + if (i >= 190) { + array = [, 1.5]; + expected = "void 0"; + } else { + array = [1.5]; + expected = "Math.sqrt(1.5)"; + } + shouldBe("foo(array, 0)", expected); +} + |