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: --track-fields --track-double-fields --allow-natives-syntax 29 30function smi_field() { 31 return {"smi":0}; 32} 33 34function check_smi_repr(o, d1, d2) { 35 var s = o.smi; 36 var d = d1 - d2; 37 s = s + d; 38 o.smi = s; 39 return o; 40} 41 42var test = smi_field(); 43check_smi_repr(smi_field(), 5, 3); 44check_smi_repr(smi_field(), 6, 2); 45%OptimizeFunctionOnNextCall(check_smi_repr); 46var val = check_smi_repr(smi_field(), 8, 1); 47assertTrue(%HaveSameMap(val, test)); 48 49function tagged_smi_field() { 50 var o = {"tag":false}; 51 o.tag = 10; 52 return o; 53} 54 55function check_smi_repr_from_tagged(o, o2) { 56 var t = o2.tag; 57 o.smi = t; 58 return o; 59} 60 61check_smi_repr_from_tagged(smi_field(), tagged_smi_field()); 62check_smi_repr_from_tagged(smi_field(), tagged_smi_field()); 63%OptimizeFunctionOnNextCall(check_smi_repr_from_tagged); 64var val = check_smi_repr_from_tagged(smi_field(), tagged_smi_field()); 65assertTrue(%HaveSameMap(val, test)); 66var overflow = tagged_smi_field(); 67overflow.tag = 0x80000000; 68var val = check_smi_repr_from_tagged(smi_field(), overflow); 69