// Copyright 2012 the V8 project authors. All rights reserved. // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // met: // // * Redistributions of source code must retain the above copyright // notice, this list of conditions and the following disclaimer. // * Redistributions in binary form must reproduce the above // copyright notice, this list of conditions and the following // disclaimer in the documentation and/or other materials provided // with the distribution. // * Neither the name of Google Inc. nor the names of its // contributors may be used to endorse or promote products derived // from this software without specific prior written permission. // // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. // Flags: --allow-natives-syntax // Test materialization of the arguments object when deoptimizing a // strict mode closure after modifying an argument. (function () { var forceDeopt = 0; function inner(x) { "use strict"; x = 2; // Do not remove this %DebugPrint as it makes sure the deopt happens // after the assignment and is not hoisted above the assignment. %DebugPrint(arguments[0]); forceDeopt + 1; return arguments[0]; }; %PrepareFunctionForOptimization(inner); assertEquals(1, inner(1)); assertEquals(1, inner(1)); %OptimizeFunctionOnNextCall(inner); assertEquals(1, inner(1)); forceDeopt = "not a number"; assertEquals(1, inner(1)); })(); // Test materialization of the arguments object when deoptimizing an // inlined strict mode closure after modifying an argument. (function () { var forceDeopt = 0; function inner(x) { "use strict"; x = 2; // Do not remove this %DebugPrint as it makes sure the deopt happens // after the assignment and is not hoisted above the assignment. %DebugPrint(arguments[0]); forceDeopt + 1; return arguments[0]; } function outer(x) { return inner(x); }; %PrepareFunctionForOptimization(outer); assertEquals(1, outer(1)); assertEquals(1, outer(1)); %OptimizeFunctionOnNextCall(outer); assertEquals(1, outer(1)); forceDeopt = "not a number"; assertEquals(1, outer(1)); })(); // Test materialization of the multiple arguments objects when // deoptimizing several inlined closure after modifying an argument. (function () { var forceDeopt = 0; function inner(x, y, z) { "use strict"; x = 3; // Do not remove this %DebugPrint as it makes sure the deopt happens // after the assignment and is not hoisted above the assignment. %DebugPrint(arguments[0]); forceDeopt + 1; return arguments[0]; } function middle(x) { "use strict"; x = 2; return inner(10 * x, 20 * x, 30 * x) + arguments[0]; } function outer(x) { return middle(x); }; %PrepareFunctionForOptimization(outer); assertEquals(21, outer(1)); assertEquals(21, outer(1)); %OptimizeFunctionOnNextCall(outer); assertEquals(21, outer(1)); forceDeopt = "not a number"; assertEquals(21, outer(1)); })();