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 24description( 25"Tests that when values predicted but not proven int are used in a tower of additions, we don't eliminate the overflow check unsoundly." 26); 27 28function foo(a, b, o) { 29 return (a + b + o.f) | 0; 30} 31 32function bar(a, b, o) { 33 eval(""); // Prevent this function from being opt compiled. 34 return foo(a, b, o); 35} 36 37var badCases = [ 38 {a:2147483645, b:2147483644, c:9007199254740990, expected:-8}, 39 {a:2147483643, b:2147483643, c:18014398509481980, expected:-16}, 40 {a:2147483643, b:2147483642, c:36028797018963960, expected:-16}, 41 {a:2147483642, b:2147483642, c:36028797018963960, expected:-16}, 42 {a:2147483641, b:2147483640, c:144115188075855840, expected:-32}, 43 {a:2147483640, b:2147483640, c:144115188075855840, expected:-64}, 44 {a:2147483640, b:2147483639, c:288230376151711680, expected:-64}, 45 {a:2147483639, b:2147483639, c:288230376151711680, expected:-64} 46]; 47 48var warmup = 100; 49 50for (var i = 0; i < warmup + badCases.length; ++i) { 51 var a, b, c; 52 var expected; 53 if (i < warmup) { 54 a = 1; 55 b = 2; 56 c = 3; 57 expected = 6; 58 } else { 59 var current = badCases[i - warmup]; 60 a = current.a; 61 b = current.b; 62 c = current.c; 63 expected = current.expected; 64 } 65 shouldBe("bar(" + a + ", " + b + ", {f:" + c + "})", "" + expected); 66} 67