1// Copyright 2011 the V8 project authors. All rights reserved. 2// Redistribution and use in source and binary forms, with or without 3// modification, are permitted provided that the following conditions are 4// met: 5// 6// * Redistributions of source code must retain the above copyright 7// notice, this list of conditions and the following disclaimer. 8// * Redistributions in binary form must reproduce the above 9// copyright notice, this list of conditions and the following 10// disclaimer in the documentation and/or other materials provided 11// with the distribution. 12// * Neither the name of Google Inc. nor the names of its 13// contributors may be used to endorse or promote products derived 14// from this software without specific prior written permission. 15// 16// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 28// Flags: --allow-natives-syntax 29 30// Deoptimization after a logical not in an effect context should not see a 31// value for the logical not expression. 32function test0(n) { 33 var a = new Array(n); 34 for (var i = 0; i < n; ++i) { 35 // ~ of a non-numeric value is used to trigger deoptimization. 36 a[i] = void(!(delete 'object')) % ~(delete 4); 37 } 38} 39 40// OSR (after deoptimization) is used to observe the stack height mismatch. 41for (var i = 0; i < 5; ++i) { 42 for (var j = 1; j < 12; ++j) { 43 test0(j * 1000); 44 } 45} 46 47 48// Similar test with a different subexpression of unary !. 49function test1(n) { 50 var a = new Array(n); 51 for (var i = 0; i < n; ++i) { 52 a[i] = void(!(- 'object')) % ~(delete 4); 53 } 54} 55 56for (i = 0; i < 5; ++i) { 57 for (j = 1; j < 12; ++j) { 58 test1(j * 1000); 59 } 60} 61 62 63// A similar issue, different subexpression of unary ! (e0 !== e1 is 64// translated into !(e0 == e1)) and different effect context. 65function side_effect() { } 66function observe(x, y) { return x; } 67function test2(x) { 68 return observe(this, 69 (((side_effect.observe <= side_effect.side_effect) !== false), 70 x + 1)); 71} 72 73for (var i = 0; i < 5; ++i) test2(0); 74%OptimizeFunctionOnNextCall(test2); 75test2(0); 76test2(test2); 77