Migrated several tests from blink to V8 repository.

test/webkit/dfg-double-vote-fuzz.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:
+// 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(
+"This tests that the static analysis we use to infer if a variable should be a double doesn't crash."
+);
+
+var grandResult = 0;
+
+for (var i = 0; i < 256; ++i) {
+    code  = "function foo(o, a, b) {\n";
+    code += "    var x = 0;\n";
+    code += "    var c = a + b;\n";
+    for (var j = 0; j < 8; ++j)
+        code += "    var " + String.fromCharCode("d".charCodeAt(0) + j) + " = " + ((i & (1 << ((j / 2) | 0))) ? "0.5" : "0") + ";\n";
+    code += "    for (var __i = 0; __i < 10; ++__i) {\n";
+    code += "        if (a + b + 1 > __i) {\n";
+    code += "            c = d;\n";
+    code += "            x += c;\n";
+    code += "        }\n";
+    code += "        if (a + b + 2 > __i) {\n";
+    code += "            c = e;\n";
+    code += "            x += c;\n";
+    code += "        }\n";
+    code += "        if (a + b + 3 > __i) {\n";
+    code += "            c = f;\n";
+    code += "            x += c;\n";
+    code += "        }\n";
+    code += "        if (a + b + 4 > __i) {\n";
+    code += "            c = g;\n";
+    code += "            x += c;\n";
+    code += "        }\n";
+    code += "        if (a + b + 5 > __i) {\n";
+    code += "            c = h;\n";
+    code += "            x += c;\n";
+    code += "        }\n";
+    code += "        if (a + b + 6 > __i) {\n";
+    code += "            c = i;\n";
+    code += "            x += c;\n";
+    code += "        }\n";
+    code += "        if (a + b + 7 > __i) {\n";
+    code += "            c = j;\n";
+    code += "            x += c;\n";
+    code += "        }\n";
+    code += "        if (a + b + 8 > __i) {\n";
+    code += "            c = k;\n";
+    code += "            x += c;\n";
+    code += "        }\n";
+    for (var j = 0; j < 8; ++j) {
+        code += "        if (a + b + " + (9 + j) + " > __i)\n";
+        code += "            " + String.fromCharCode("d".charCodeAt(0) + j) + " = __i + " + j + " + " + ((i & (1 << (((j / 2) | 0) + 4))) ? "0.5" : "0") + ";\n";
+    }
+    code += "    }\n";
+    code += "    return x + c;\n";
+    code += "}\n";
+    code += "\n";
+    code += "var result = 0;\n"
+    code += "for (var __j = 0; __j < 100; ++__j) {\n";
+    code += "    result += foo({}, __j, __j + 1);\n";
+    code += "}\n";
+    code += "\n";
+    code += "result";
+
+    var theResult = eval(code);
+    debug("Result value is " + theResult);
+    grandResult += theResult;
+}
+
+shouldBe("grandResult", "14578304");
+
+