1b6d052d4d08b0de341804f273713741dee560c5everwaest@chromium.org// Copyright 2012 the V8 project authors. All rights reserved. 2b6d052d4d08b0de341804f273713741dee560c5everwaest@chromium.org// Redistribution and use in source and binary forms, with or without 3b6d052d4d08b0de341804f273713741dee560c5everwaest@chromium.org// modification, are permitted provided that the following conditions are 4b6d052d4d08b0de341804f273713741dee560c5everwaest@chromium.org// met: 5b6d052d4d08b0de341804f273713741dee560c5everwaest@chromium.org// 6b6d052d4d08b0de341804f273713741dee560c5everwaest@chromium.org// * Redistributions of source code must retain the above copyright 7b6d052d4d08b0de341804f273713741dee560c5everwaest@chromium.org// notice, this list of conditions and the following disclaimer. 8b6d052d4d08b0de341804f273713741dee560c5everwaest@chromium.org// * Redistributions in binary form must reproduce the above 9b6d052d4d08b0de341804f273713741dee560c5everwaest@chromium.org// copyright notice, this list of conditions and the following 10b6d052d4d08b0de341804f273713741dee560c5everwaest@chromium.org// disclaimer in the documentation and/or other materials provided 11b6d052d4d08b0de341804f273713741dee560c5everwaest@chromium.org// with the distribution. 12b6d052d4d08b0de341804f273713741dee560c5everwaest@chromium.org// * Neither the name of Google Inc. nor the names of its 13b6d052d4d08b0de341804f273713741dee560c5everwaest@chromium.org// contributors may be used to endorse or promote products derived 14b6d052d4d08b0de341804f273713741dee560c5everwaest@chromium.org// from this software without specific prior written permission. 15b6d052d4d08b0de341804f273713741dee560c5everwaest@chromium.org// 16b6d052d4d08b0de341804f273713741dee560c5everwaest@chromium.org// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17b6d052d4d08b0de341804f273713741dee560c5everwaest@chromium.org// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18b6d052d4d08b0de341804f273713741dee560c5everwaest@chromium.org// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19b6d052d4d08b0de341804f273713741dee560c5everwaest@chromium.org// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20b6d052d4d08b0de341804f273713741dee560c5everwaest@chromium.org// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21b6d052d4d08b0de341804f273713741dee560c5everwaest@chromium.org// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22b6d052d4d08b0de341804f273713741dee560c5everwaest@chromium.org// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23b6d052d4d08b0de341804f273713741dee560c5everwaest@chromium.org// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24b6d052d4d08b0de341804f273713741dee560c5everwaest@chromium.org// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25b6d052d4d08b0de341804f273713741dee560c5everwaest@chromium.org// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26b6d052d4d08b0de341804f273713741dee560c5everwaest@chromium.org// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27b6d052d4d08b0de341804f273713741dee560c5everwaest@chromium.org 28b6d052d4d08b0de341804f273713741dee560c5everwaest@chromium.org// Flags: --allow-natives-syntax 29b6d052d4d08b0de341804f273713741dee560c5everwaest@chromium.org 30b6d052d4d08b0de341804f273713741dee560c5everwaest@chromium.orgfunction worker1(ignored) { 31b6d052d4d08b0de341804f273713741dee560c5everwaest@chromium.org return 100; 32b6d052d4d08b0de341804f273713741dee560c5everwaest@chromium.org} 33b6d052d4d08b0de341804f273713741dee560c5everwaest@chromium.org 34b6d052d4d08b0de341804f273713741dee560c5everwaest@chromium.orgfunction factory(worker) { 35b6d052d4d08b0de341804f273713741dee560c5everwaest@chromium.org return function(call_depth) { 36b6d052d4d08b0de341804f273713741dee560c5everwaest@chromium.org if (call_depth == 0) return 10; 37b6d052d4d08b0de341804f273713741dee560c5everwaest@chromium.org return 1 + worker(call_depth - 1); 38b6d052d4d08b0de341804f273713741dee560c5everwaest@chromium.org } 39b6d052d4d08b0de341804f273713741dee560c5everwaest@chromium.org} 40b6d052d4d08b0de341804f273713741dee560c5everwaest@chromium.org 41b6d052d4d08b0de341804f273713741dee560c5everwaest@chromium.orgvar f1 = factory(worker1); 42b6d052d4d08b0de341804f273713741dee560c5everwaest@chromium.orgvar f2 = factory(f1); 43b6d052d4d08b0de341804f273713741dee560c5everwaest@chromium.orgassertEquals(11, f2(1)); // Result: 1 + f1(0) == 1 + 10. 44b6d052d4d08b0de341804f273713741dee560c5everwaest@chromium.orgassertEquals(11, f2(1)); 45b6d052d4d08b0de341804f273713741dee560c5everwaest@chromium.org%OptimizeFunctionOnNextCall(f1); 46b6d052d4d08b0de341804f273713741dee560c5everwaest@chromium.orgassertEquals(10, f1(0)); // Terminates immediately -> returns 10. 47b6d052d4d08b0de341804f273713741dee560c5everwaest@chromium.org%OptimizeFunctionOnNextCall(f2); 48b6d052d4d08b0de341804f273713741dee560c5everwaest@chromium.orgassertEquals(102, f2(1000)); // 1 + f1(999) == 1 + 1 + worker1(998) == 102 49