1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
|
// Copyright 2013 the V8 project authors. All rights reserved.
// Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
// ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
description(
"Tests that when values predicted but not proven int are used in a tower of additions, we don't eliminate the overflow check unsoundly."
);
function foo(a, b, o) {
return (a + b + o.f) | 0;
}
function bar(a, b, o) {
eval(""); // Prevent this function from being opt compiled.
return foo(a, b, o);
}
var badCases = [
{a:2147483645, b:2147483644, c:9007199254740990, expected:-8},
{a:2147483643, b:2147483643, c:18014398509481980, expected:-16},
{a:2147483643, b:2147483642, c:36028797018963960, expected:-16},
{a:2147483642, b:2147483642, c:36028797018963960, expected:-16},
{a:2147483641, b:2147483640, c:144115188075855840, expected:-32},
{a:2147483640, b:2147483640, c:144115188075855840, expected:-64},
{a:2147483640, b:2147483639, c:288230376151711680, expected:-64},
{a:2147483639, b:2147483639, c:288230376151711680, expected:-64}
];
var warmup = 100;
for (var i = 0; i < warmup + badCases.length; ++i) {
var a, b, c;
var expected;
if (i < warmup) {
a = 1;
b = 2;
c = 3;
expected = 6;
} else {
var current = badCases[i - warmup];
a = current.a;
b = current.b;
c = current.c;
expected = current.expected;
}
shouldBe("bar(" + a + ", " + b + ", {f:" + c + "})", "" + expected);
}
|
