1// Copyright 2010 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 30function f(x) { 31 return ~x; 32} 33 34f(42); 35assertEquals(~12, f(12.45)); 36assertEquals(~42, f(42.87)); 37 38 39var a = 1, b = 2, c = 4, d = 8; 40function g() { 41 return a | (b | (c | d)); 42} 43 44g(); 45c = "16"; 46assertEquals(1 | 2 | 16 | 8, g()); 47 48 49// Test deopt when global function changes. 50function h() { 51 return g(); 52} 53assertEquals(1 | 2 | 16 | 8, h()); 54g = function() { return 42; }; 55assertEquals(42, h()); 56 57 58// Test deopt when map changes. 59var obj = {}; 60obj.g = g; 61function k(o) { 62 return o.g(); 63} 64for (var i = 0; i < 5; i++) k(obj); 65%OptimizeFunctionOnNextCall(k); 66k(obj); 67assertEquals(42, k(obj)); 68assertEquals(87, k({g: function() { return 87; }})); 69 70 71// Test deopt with assignments to parameters. 72function p(x,y) { 73 x = 42; 74 y = 1; 75 y = y << "0"; 76 return x | y; 77} 78assertEquals(43, p(0,0)); 79 80 81// Test deopt with literals on the expression stack. 82function LiteralToStack(x) { 83 return 'lit[' + (x + ']'); 84} 85 86assertEquals('lit[-87]', LiteralToStack(-87)); 87assertEquals('lit[0]', LiteralToStack(0)); 88assertEquals('lit[42]', LiteralToStack(42)); 89 90 91// Test deopt before call. 92var str = "abc"; 93var r; 94function CallCharAt(n) { return str.charAt(n); } 95for (var i = 0; i < 5; i++) { 96 r = CallCharAt(0); 97} 98%OptimizeFunctionOnNextCall(CallCharAt); 99r = CallCharAt(0); 100assertEquals("a", r); 101 102 103// Test of deopt in presence of spilling. 104function add4(a,b,c,d) { 105 return a+b+c+d; 106} 107assertEquals(0x40000003, add4(1,1,2,0x3fffffff)); 108