99e17bb12a
Review URL: https://chromiumcodereview.appspot.com/14146005 git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@14464 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
102 lines
3.5 KiB
JavaScript
102 lines
3.5 KiB
JavaScript
// Copyright 2013 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// Flags: --track-fields --track-double-fields --allow-natives-syntax
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// Test transitions caused by changes to field representations.
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function create_smi_object() {
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var o = {};
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o.x = 1;
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o.y = 2;
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o.z = 3;
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return o;
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}
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var o1 = create_smi_object();
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var o2 = create_smi_object();
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// o1,o2 are smi, smi, smi
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assertTrue(%HaveSameMap(o1, o2));
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o1.y = 1.3;
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// o1 is smi, double, smi
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assertFalse(%HaveSameMap(o1, o2));
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o2.y = 1.5;
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// o2 is smi, double, smi
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assertTrue(%HaveSameMap(o1, o2));
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// o3 is initialized as smi, double, smi
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var o3 = create_smi_object();
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assertTrue(%HaveSameMap(o1, o3));
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function set_large(o, v) {
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o.x01 = v; o.x02 = v; o.x03 = v; o.x04 = v; o.x05 = v; o.x06 = v; o.x07 = v;
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o.x08 = v; o.x09 = v; o.x10 = v; o.x11 = v; o.x12 = v; o.x13 = v; o.x14 = v;
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o.x15 = v; o.x16 = v; o.x17 = v; o.x18 = v; o.x19 = v; o.x20 = v; o.x21 = v;
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o.x22 = v; o.x23 = v; o.x24 = v; o.x25 = v; o.x26 = v; o.x27 = v; o.x28 = v;
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o.x29 = v; o.x30 = v; o.x31 = v; o.x32 = v; o.x33 = v; o.x34 = v; o.x35 = v;
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o.x36 = v; o.x37 = v; o.x38 = v; o.x39 = v; o.x40 = v; o.x41 = v; o.x42 = v;
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o.y01 = v; o.y02 = v; o.y03 = v; o.y04 = v; o.y05 = v; o.y06 = v; o.y07 = v;
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o.y08 = v; o.y09 = v; o.y10 = v; o.y11 = v; o.y12 = v; o.y13 = v; o.y14 = v;
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o.y15 = v; o.y16 = v; o.y17 = v; o.y18 = v; o.y19 = v; o.y20 = v; o.y21 = v;
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}
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// Check that large object migrations work.
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var o4 = {};
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// All smi.
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set_large(o4, 0);
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assertTrue(%HasFastProperties(o4));
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// All double.
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set_large(o4, 1.5);
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// o5 is immediately allocated with doubles.
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var o5 = {};
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set_large(o5, 0);
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assertTrue(%HaveSameMap(o4, o5));
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function create_smi_object2() {
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var o = {};
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o.a = 1;
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o.b = 2;
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o.c = 3;
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return o;
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}
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// All smi
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var o6 = create_smi_object2();
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var o7 = create_smi_object2();
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assertTrue(%HaveSameMap(o6, o7));
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// Smi, double, smi.
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o6.b = 1.5;
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assertFalse(%HaveSameMap(o6, o7));
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// Smi, double, object.
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o7.c = {};
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assertFalse(%HaveSameMap(o6, o7));
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// Smi, double, object.
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o6.c = {};
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assertTrue(%HaveSameMap(o6, o7));
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