1
// Copyright 2011 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
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.
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.
28
// Flags: --allow-natives-syntax --smi-only-arrays
30
support_smi_only_arrays = %HasFastSmiOnlyElements([]);
32
if (support_smi_only_arrays) {
33
function test(test_double, test_object, set, length) {
34
// We apply the same operations to two identical arrays. The first array
35
// triggers an IC miss, upon which the conversion stub is generated, but the
36
// actual conversion is done in runtime. The second array, arriving at
37
// the previously patched IC, is then converted using the conversion stub.
38
var array_1 = new Array(length);
39
var array_2 = new Array(length);
41
assertTrue(%HasFastSmiOnlyElements(array_1));
42
assertTrue(%HasFastSmiOnlyElements(array_2));
43
for (var i = 0; i < length; i++) {
44
if (i == length - 5 && test_double) {
45
// Trigger conversion to fast double elements at length-5.
48
assertTrue(%HasFastDoubleElements(array_1));
49
assertTrue(%HasFastDoubleElements(array_2));
50
} else if (i == length - 3 && test_object) {
51
// Trigger conversion to fast object elements at length-3.
52
set(array_1, i, 'object');
53
set(array_2, i, 'object');
54
assertTrue(%HasFastElements(array_1));
55
assertTrue(%HasFastElements(array_2));
56
} else if (i != length - 7) {
57
// Set the element to an integer but leave a hole at length-7.
58
set(array_1, i, 2*i+1);
59
set(array_2, i, 2*i+1);
63
for (var i = 0; i < length; i++) {
64
if (i == length - 5 && test_double) {
65
assertEquals(0.5, array_1[i]);
66
assertEquals(0.5, array_2[i]);
67
} else if (i == length - 3 && test_object) {
68
assertEquals('object', array_1[i]);
69
assertEquals('object', array_2[i]);
70
} else if (i != length - 7) {
71
assertEquals(2*i+1, array_1[i]);
72
assertEquals(2*i+1, array_2[i]);
74
assertEquals(undefined, array_1[i]);
75
assertEquals(undefined, array_2[i]);
79
assertEquals(length, array_1.length);
80
assertEquals(length, array_2.length);
83
test(false, false, function(a,i,v){ a[i] = v; }, 20);
84
test(true, false, function(a,i,v){ a[i] = v; }, 20);
85
test(false, true, function(a,i,v){ a[i] = v; }, 20);
86
test(true, true, function(a,i,v){ a[i] = v; }, 20);
88
test(false, false, function(a,i,v){ a[i] = v; }, 10000);
89
test(true, false, function(a,i,v){ a[i] = v; }, 10000);
90
test(false, true, function(a,i,v){ a[i] = v; }, 10000);
91
test(true, true, function(a,i,v){ a[i] = v; }, 10000);
94
function get_cow() { return [1, 2, 3]; }
96
function transition(x) { x[0] = 1.5; }
98
var ignore = get_cow();
99
transition(ignore); // Handled by runtime.
102
transition(a); // Handled by IC.
103
assertEquals(1.5, a[0]);
104
assertEquals(1, b[0]);
106
print("Test skipped because smi only arrays are not supported.");
b'\\ No newline at end of file'