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 30 function smi_field() { 31 return {"smi":0}; 32 } 33 34 function 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 42 var test = smi_field(); 43 check_smi_repr(smi_field(), 5, 3); 44 check_smi_repr(smi_field(), 6, 2); 45 %OptimizeFunctionOnNextCall(check_smi_repr); 46 var val = check_smi_repr(smi_field(), 8, 1); 47 assertTrue(%HaveSameMap(val, test)); 48 49 function tagged_smi_field() { 50 var o = {"tag":false}; 51 o.tag = 10; 52 return o; 53 } 54 55 function check_smi_repr_from_tagged(o, o2) { 56 var t = o2.tag; 57 o.smi = t; 58 return o; 59 } 60 61 check_smi_repr_from_tagged(smi_field(), tagged_smi_field()); 62 check_smi_repr_from_tagged(smi_field(), tagged_smi_field()); 63 %OptimizeFunctionOnNextCall(check_smi_repr_from_tagged); 64 var val = check_smi_repr_from_tagged(smi_field(), tagged_smi_field()); 65 assertTrue(%HaveSameMap(val, test)); 66 var overflow = tagged_smi_field(); 67 overflow.tag = 0x80000000; 68 var val = check_smi_repr_from_tagged(smi_field(), overflow); 69
