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: --allow-natives-syntax
29
30// Load fields should not be hoisted beyond their check maps when the check maps
31// cannot be hoisted due to changes in elements kinds.
32function f(o, a) {
33  var v;
34  var i = 1;
35  while (i < 2) {
36    v = o.y;
37    a[0] = 1.5;
38    i++;
39  }
40  return v;
41}
42
43f({y:1.4}, [1]);
44f({y:1.6}, [1]);
45%OptimizeFunctionOnNextCall(f);
46f({x:1}, [1]);
47
48// Polymorphic loads should not be hoisted beyond their compare maps.
49function f2(o) {
50  var i = 0;
51  var v;
52  while (i < 1) {
53    v = o.x;
54    i++;
55  }
56  return v;
57}
58
59var o1 = { x: 1.5 };
60var o2 = { y: 1, x: 1 };
61
62f2(o1);
63f2(o1);
64f2(o2);
65%OptimizeFunctionOnNextCall(f2);
66f2(o2);
67