1 // Copyright 2012 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
29 // Flags: --nostress-opt
31 // This code exists to eliminate the learning influence of AllocationSites
32 // on the following tests.
34 function make_array_string(length) {
35 this.__sequence = this.__sequence + 1;
36 return "/* " + this.__sequence + " */ new Array(" + length + ");";
38 function make_array(length) {
39 return eval(make_array_string(length));
42 function test(test_double, test_object, set, length) {
43 // We apply the same operations to two identical arrays. The first array
44 // triggers an IC miss, upon which the conversion stub is generated, but the
45 // actual conversion is done in runtime. The second array, arriving at
46 // the previously patched IC, is then converted using the conversion stub.
47 var array_1 = make_array(length);
48 var array_2 = make_array(length);
50 // false, true, nice setter function, 20
51 assertTrue(%HasFastSmiElements(array_1));
52 assertTrue(%HasFastSmiElements(array_2));
53 for (var i = 0; i < length; i++) {
54 if (i == length - 5 && test_double) {
55 // Trigger conversion to fast double elements at length-5.
58 assertTrue(%HasFastDoubleElements(array_1));
59 assertTrue(%HasFastDoubleElements(array_2));
60 } else if (i == length - 3 && test_object) {
61 // Trigger conversion to fast object elements at length-3.
62 set(array_1, i, 'object');
63 set(array_2, i, 'object');
64 assertTrue(%HasFastObjectElements(array_1));
65 assertTrue(%HasFastObjectElements(array_2));
66 } else if (i != length - 7) {
67 // Set the element to an integer but leave a hole at length-7.
68 set(array_1, i, 2*i+1);
69 set(array_2, i, 2*i+1);
73 for (var i = 0; i < length; i++) {
74 if (i == length - 5 && test_double) {
75 assertEquals(0.5, array_1[i]);
76 assertEquals(0.5, array_2[i]);
77 } else if (i == length - 3 && test_object) {
78 assertEquals('object', array_1[i]);
79 assertEquals('object', array_2[i]);
80 } else if (i != length - 7) {
81 assertEquals(2*i+1, array_1[i]);
82 assertEquals(2*i+1, array_2[i]);
84 assertEquals(undefined, array_1[i]);
85 assertEquals(undefined, array_2[i]);
89 assertEquals(length, array_1.length);
90 assertEquals(length, array_2.length);
93 function run_test(test_double, test_object, set, length) {
94 test(test_double, test_object, set, length);
95 %ClearFunctionTypeFeedback(test);
98 run_test(false, false, function(a,i,v){ a[i] = v; }, 20);
99 run_test(true, false, function(a,i,v){ a[i] = v; }, 20);
100 run_test(false, true, function(a,i,v){ a[i] = v; }, 20);
101 run_test(true, true, function(a,i,v){ a[i] = v; }, 20);
103 run_test(false, false, function(a,i,v){ a[i] = v; }, 10000);
104 run_test(true, false, function(a,i,v){ a[i] = v; }, 10000);
105 run_test(false, true, function(a,i,v){ a[i] = v; }, 10000);
106 run_test(true, true, function(a,i,v){ a[i] = v; }, 10000);
109 function get_cow() { return [1, 2, 3]; }
111 function transition(x) { x[0] = 1.5; }
113 var ignore = get_cow();
114 transition(ignore); // Handled by runtime.
117 transition(a); // Handled by IC.
118 assertEquals(1.5, a[0]);
119 assertEquals(1, b[0]);