1 // Copyright 2013 the V8 project authors. All rights reserved. 2 // Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved. 3 // 4 // Redistribution and use in source and binary forms, with or without 5 // modification, are permitted provided that the following conditions 6 // are met: 7 // 1. Redistributions of source code must retain the above copyright 8 // notice, this list of conditions and the following disclaimer. 9 // 2. Redistributions in binary form must reproduce the above copyright 10 // notice, this list of conditions and the following disclaimer in the 11 // documentation and/or other materials provided with the distribution. 12 // 13 // THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY 14 // EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 15 // WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 16 // DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY 17 // DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 18 // (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 19 // LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 20 // ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 21 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 22 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 23 24 description( 25 "This tests that the static analysis we use to infer if a variable should be a double doesn't crash." 26 ); 27 28 var grandResult = 0; 29 30 for (var i = 0; i < 256; ++i) { 31 code = "function foo(o, a, b) {\n"; 32 code += " var x = 0;\n"; 33 code += " var c = a + b;\n"; 34 for (var j = 0; j < 8; ++j) 35 code += " var " + String.fromCharCode("d".charCodeAt(0) + j) + " = " + ((i & (1 << ((j / 2) | 0))) ? "0.5" : "0") + ";\n"; 36 code += " for (var __i = 0; __i < 10; ++__i) {\n"; 37 code += " if (a + b + 1 > __i) {\n"; 38 code += " c = d;\n"; 39 code += " x += c;\n"; 40 code += " }\n"; 41 code += " if (a + b + 2 > __i) {\n"; 42 code += " c = e;\n"; 43 code += " x += c;\n"; 44 code += " }\n"; 45 code += " if (a + b + 3 > __i) {\n"; 46 code += " c = f;\n"; 47 code += " x += c;\n"; 48 code += " }\n"; 49 code += " if (a + b + 4 > __i) {\n"; 50 code += " c = g;\n"; 51 code += " x += c;\n"; 52 code += " }\n"; 53 code += " if (a + b + 5 > __i) {\n"; 54 code += " c = h;\n"; 55 code += " x += c;\n"; 56 code += " }\n"; 57 code += " if (a + b + 6 > __i) {\n"; 58 code += " c = i;\n"; 59 code += " x += c;\n"; 60 code += " }\n"; 61 code += " if (a + b + 7 > __i) {\n"; 62 code += " c = j;\n"; 63 code += " x += c;\n"; 64 code += " }\n"; 65 code += " if (a + b + 8 > __i) {\n"; 66 code += " c = k;\n"; 67 code += " x += c;\n"; 68 code += " }\n"; 69 for (var j = 0; j < 8; ++j) { 70 code += " if (a + b + " + (9 + j) + " > __i)\n"; 71 code += " " + String.fromCharCode("d".charCodeAt(0) + j) + " = __i + " + j + " + " + ((i & (1 << (((j / 2) | 0) + 4))) ? "0.5" : "0") + ";\n"; 72 } 73 code += " }\n"; 74 code += " return x + c;\n"; 75 code += "}\n"; 76 code += "\n"; 77 code += "var result = 0;\n" 78 code += "for (var __j = 0; __j < 100; ++__j) {\n"; 79 code += " result += foo({}, __j, __j + 1);\n"; 80 code += "}\n"; 81 code += "\n"; 82 code += "result"; 83 84 var theResult = eval(code); 85 debug("Result value is " + theResult); 86 grandResult += theResult; 87 } 88 89 shouldBe("grandResult", "14578304"); 90 91 92
