1b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch// Copyright 2013 the V8 project authors. All rights reserved. 2a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Redistribution and use in source and binary forms, with or without 3a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// modification, are permitted provided that the following conditions are 4a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// met: 5a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// 6a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// * Redistributions of source code must retain the above copyright 7a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// notice, this list of conditions and the following disclaimer. 8a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// * Redistributions in binary form must reproduce the above 9a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// copyright notice, this list of conditions and the following 10a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// disclaimer in the documentation and/or other materials provided 11a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// with the distribution. 12a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// * Neither the name of Google Inc. nor the names of its 13a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// contributors may be used to endorse or promote products derived 14a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// from this software without specific prior written permission. 15a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// 16a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 28b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch// Flags: --track-fields --track-double-fields --allow-natives-syntax 29a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 30b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdochfunction smi_field() { 31b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch return {"smi":0}; 32b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch} 33a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 34b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdochfunction check_smi_repr(o, d1, d2) { 35b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch var s = o.smi; 36b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch var d = d1 - d2; 37b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch s = s + d; 38b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch o.smi = s; 39b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch return o; 4044f0eee88ff00398ff7f715fab053374d808c90dSteve Block} 416ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 42b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdochvar test = smi_field(); 43b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdochcheck_smi_repr(smi_field(), 5, 3); 44b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdochcheck_smi_repr(smi_field(), 6, 2); 45b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch%OptimizeFunctionOnNextCall(check_smi_repr); 46b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdochvar val = check_smi_repr(smi_field(), 8, 1); 47b8a8cc1952d61a2f3a2568848933943a543b5d3eBen MurdochassertTrue(%HaveSameMap(val, test)); 486ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 49b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdochfunction tagged_smi_field() { 50b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch var o = {"tag":false}; 51b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch o.tag = 10; 52b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch return o; 536ded16be15dd865a9b21ea304d5273c8be299c87Steve Block} 5444f0eee88ff00398ff7f715fab053374d808c90dSteve Block 55b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdochfunction check_smi_repr_from_tagged(o, o2) { 56b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch var t = o2.tag; 57b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch o.smi = t; 58b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch return o; 59b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch} 6044f0eee88ff00398ff7f715fab053374d808c90dSteve Block 61b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdochcheck_smi_repr_from_tagged(smi_field(), tagged_smi_field()); 62b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdochcheck_smi_repr_from_tagged(smi_field(), tagged_smi_field()); 63b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch%OptimizeFunctionOnNextCall(check_smi_repr_from_tagged); 64b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdochvar val = check_smi_repr_from_tagged(smi_field(), tagged_smi_field()); 65b8a8cc1952d61a2f3a2568848933943a543b5d3eBen MurdochassertTrue(%HaveSameMap(val, test)); 66b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdochvar overflow = tagged_smi_field(); 67b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdochoverflow.tag = 0x80000000; 68b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdochvar val = check_smi_repr_from_tagged(smi_field(), overflow); 69