1// Copyright 2013 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// Test inlining and deoptimization of function.apply(this, arguments) 31// calls for which the exact number of arguments is known. 32(function () { 33 "use strict"; 34 function test(argumentsCount) { 35 var dispatcher = {}; 36 var deoptimize = { deopt:false }; 37 dispatcher["const" + argumentsCount] = 0; 38 dispatcher.func = C; 39 40 function A(x,y) { 41 var r = "A"; 42 if (argumentsCount == 1) r += B(10); 43 if (argumentsCount == 2) r += B(10, 11); 44 if (argumentsCount == 3) r += B(10, 11, 12); 45 assertSame(1, x); 46 assertSame(2, y); 47 return r; 48 } 49 50 function B(x,y) { 51 x = 0; y = 0; 52 var r = "B" + dispatcher.func.apply(this, arguments); 53 assertSame(argumentsCount, arguments.length); 54 for (var i = 0; i < arguments.length; i++) { 55 assertSame(10 + i, arguments[i]); 56 } 57 return r; 58 } 59 60 function C(x,y) { 61 x = 0; y = 0; 62 var r = "C" 63 deoptimize.deopt; 64 assertSame(argumentsCount, arguments.length); 65 for (var i = 0; i < arguments.length; i++) { 66 assertSame(10 + i, arguments[i]); 67 } 68 return r; 69 } 70 71 assertEquals("ABC", A(1,2)); 72 assertEquals("ABC", A(1,2)); 73 %OptimizeFunctionOnNextCall(A); 74 assertEquals("ABC", A(1,2)); 75 delete deoptimize.deopt; 76 assertEquals("ABC", A(1,2)); 77 78 %DeoptimizeFunction(A); 79 %ClearFunctionTypeFeedback(A); 80 %DeoptimizeFunction(B); 81 %ClearFunctionTypeFeedback(B); 82 %DeoptimizeFunction(C); 83 %ClearFunctionTypeFeedback(C); 84 } 85 86 for (var a = 1; a <= 3; a++) { 87 test(a); 88 } 89})(); 90