v8: upgrade to v3.20.2

1 files changed, 49 insertions, 0 deletions

diff --git a/deps/v8/test/webkit/dfg-sqrt-backwards-propagation.js b/deps/v8/test/webkit/dfg-sqrt-backwards-propagation.js
new file mode 100644
index 0000000000..9954e3a5bf
--- /dev/null
+++ b/deps/v8/test/webkit/dfg-sqrt-backwards-propagation.js
@@ -0,0 +1,49 @@
+// 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 function that appears like Math.sqrt could potentially use value in arbitrary ways, and not just in a context that converts values to numbers."
+);
+
+function foo(f, array, i) {
+    return f(array[i]);
+}
+
+function bar(value) {
+    return value;
+}
+
+for (var i = 0; i < 200; ++i) {
+    var f, array, expected;
+    if (i == 190) {
+        f = "bar";
+        array = "[, 1.5]";
+        expected = "void 0";
+    } else {
+        f = "Math.sqrt";
+        array = "[1.5]";
+        expected = "Math.sqrt(1.5)";
+    }
+    shouldBe("foo(" + f + ", " + array + ", 0)", expected);
+}
+