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
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
|
// Copyright 2013 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * 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.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
// OWNER OR 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.
// Flags: --expose-gc --allow-natives-syntax
function clear_all_ics() {
%NotifyContextDisposed();
gc();
gc();
gc();
}
// Test: verify that a monomorphic call retains the structural knowledge
// of a global call, correctly throwing either ReferenceError or
// TypeError on undefined depending on how the call is made.
(function() {
foo = function(arg) { return arg + 1; }
function f() { foo(1); }
// Drive to monomorphic
%PrepareFunctionForOptimization(f);
f(); f(); f();
delete foo;
assertThrows(function() { f(); }, ReferenceError);
foo = function(arg) { return arg * 2; }
assertDoesNotThrow(function() { f(); });
f(); f(); f();
delete foo;
assertThrows(function() { f(); }, ReferenceError);
clear_all_ics();
foo = function(arg) { return arg * 3; }
f();
%OptimizeFunctionOnNextCall(f);
f();
delete foo;
assertThrows(function() { f(); }, ReferenceError);
foo = function(arg) { return arg * 3; }
function g() { this.foo(1); }
%PrepareFunctionForOptimization(g);
g(); g(); g();
delete foo;
assertThrows(function() { g(); }, TypeError);
foo = function(arg) { return arg * 3; }
g();
%OptimizeFunctionOnNextCall(g);
g();
delete foo;
assertThrows(function() { g(); }, TypeError);
})();
// Test: verify that a load with IC does the right thing.
(function() {
var foo = function() { return a; };
%PrepareFunctionForOptimization(foo);
a = 3;
foo(); foo(); foo();
delete a;
assertThrows(function() { foo(); }, ReferenceError);
a = "hi";
foo();
clear_all_ics();
foo();
%OptimizeFunctionOnNextCall(foo);
foo();
delete a;
assertThrows(function() { foo(); }, ReferenceError);
foo = function() { return this.a; }
assertDoesNotThrow(function() { foo(); });
})();
// Test: verify that a store with IC does the right thing.
// If store is contextual and strict mode is set, throw a ReferenceError
// if the variable isn't found.
(function() {
var foo = function() { a = 3; }
var bar = function() { "use strict"; a = 3; };
%PrepareFunctionForOptimization(bar);
foo(); foo(); foo();
delete a;
assertThrows(function() { bar(); }, ReferenceError);
a = 6;
foo(); foo(); foo();
bar(); bar();
clear_all_ics();
bar();
%OptimizeFunctionOnNextCall(bar);
bar();
delete a;
assertThrows(function() { bar(); }, ReferenceError);
})();
|
