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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
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 --expose-gc
29
30// Limit the number of stress runs to reduce polymorphism it defeats some of the
31// assumptions made about how elements transitions work because transition stubs
32// end up going generic.
33// Flags: --stress-runs=1
34
35var elements_kind = {
36  fast_smi_only             :  'fast smi only elements',
37  fast                      :  'fast elements',
38  fast_double               :  'fast double elements',
39  dictionary                :  'dictionary elements',
40  fixed_int32               :  'fixed int8 elements',
41  fixed_uint8               :  'fixed uint8 elements',
42  fixed_int16               :  'fixed int16 elements',
43  fixed_uint16              :  'fixed uint16 elements',
44  fixed_int32               :  'fixed int32 elements',
45  fixed_uint32              :  'fixed uint32 elements',
46  fixed_float32             :  'fixed float32 elements',
47  fixed_float64             :  'fixed float64 elements',
48  fixed_uint8_clamped       :  'fixed uint8_clamped elements'
49}
50
51function getKind(obj) {
52  if (%HasFastSmiElements(obj)) return elements_kind.fast_smi_only;
53  if (%HasFastObjectElements(obj)) return elements_kind.fast;
54  if (%HasFastDoubleElements(obj)) return elements_kind.fast_double;
55  if (%HasDictionaryElements(obj)) return elements_kind.dictionary;
56
57  if (%HasFixedInt8Elements(obj)) {
58    return elements_kind.fixed_int8;
59  }
60  if (%HasFixedUint8Elements(obj)) {
61    return elements_kind.fixed_uint8;
62  }
63  if (%HasFixedInt16Elements(obj)) {
64    return elements_kind.fixed_int16;
65  }
66  if (%HasFixedUint16Elements(obj)) {
67    return elements_kind.fixed_uint16;
68  }
69  if (%HasFixedInt32Elements(obj)) {
70    return elements_kind.fixed_int32;
71  }
72  if (%HasFixedUint32Elements(obj)) {
73    return elements_kind.fixed_uint32;
74  }
75  if (%HasFixedFloat32Elements(obj)) {
76    return elements_kind.fixed_float32;
77  }
78  if (%HasFixedFloat64Elements(obj)) {
79    return elements_kind.fixed_float64;
80  }
81  if (%HasFixedUint8ClampedElements(obj)) {
82    return elements_kind.fixed_uint8_clamped;
83  }
84}
85
86function assertKind(expected, obj, name_opt) {
87  assertEquals(expected, getKind(obj), name_opt);
88}
89
90%NeverOptimizeFunction(construct_smis);
91%NeverOptimizeFunction(construct_doubles);
92%NeverOptimizeFunction(convert_mixed);
93for (var i = 0; i < 10; i++) { if (i == 5) %OptimizeOsr(); }
94
95// This code exists to eliminate the learning influence of AllocationSites
96// on the following tests.
97var __sequence = 0;
98function make_array_string() {
99  this.__sequence = this.__sequence + 1;
100  return "/* " + this.__sequence + " */  [0, 0, 0];"
101}
102function make_array() {
103  return eval(make_array_string());
104}
105
106function construct_smis() {
107  var a = make_array();
108  a[0] = 0;  // Send the COW array map to the steak house.
109  assertKind(elements_kind.fast_smi_only, a);
110  return a;
111}
112function construct_doubles() {
113  var a = construct_smis();
114  a[0] = 1.5;
115  assertKind(elements_kind.fast_double, a);
116  return a;
117}
118
119// Test transition chain SMI->DOUBLE->FAST (crankshafted function will
120// transition to FAST directly).
121function convert_mixed(array, value, kind) {
122  array[1] = value;
123  assertKind(kind, array);
124  assertEquals(value, array[1]);
125}
126smis = construct_smis();
127convert_mixed(smis, 1.5, elements_kind.fast_double);
128
129doubles = construct_doubles();
130convert_mixed(doubles, "three", elements_kind.fast);
131
132convert_mixed(construct_smis(), "three", elements_kind.fast);
133convert_mixed(construct_doubles(), "three", elements_kind.fast);
134
135smis = construct_smis();
136doubles = construct_doubles();
137convert_mixed(smis, 1, elements_kind.fast);
138convert_mixed(doubles, 1, elements_kind.fast);
139assertTrue(%HaveSameMap(smis, doubles));
140
141// Throw away type information in the ICs for next stress run.
142gc();
143