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 --nostress-opt --typed-array-max-size-in-heap=2048
29
30var elements_kind = {
31  fast_smi_only             :  'fast smi only elements',
32  fast                      :  'fast elements',
33  fast_double               :  'fast double elements',
34  dictionary                :  'dictionary elements',
35  fixed_int32               :  'fixed int8 elements',
36  fixed_uint8               :  'fixed uint8 elements',
37  fixed_int16               :  'fixed int16 elements',
38  fixed_uint16              :  'fixed uint16 elements',
39  fixed_int32               :  'fixed int32 elements',
40  fixed_uint32              :  'fixed uint32 elements',
41  fixed_float32             :  'fixed float32 elements',
42  fixed_float64             :  'fixed float64 elements',
43  fixed_uint8_clamped       :  'fixed uint8_clamped elements'
44}
45
46function getKind(obj) {
47  if (%HasFastSmiElements(obj)) return elements_kind.fast_smi_only;
48  if (%HasFastObjectElements(obj)) return elements_kind.fast;
49  if (%HasFastDoubleElements(obj)) return elements_kind.fast_double;
50  if (%HasDictionaryElements(obj)) return elements_kind.dictionary;
51
52  if (%HasFixedInt8Elements(obj)) {
53    return elements_kind.fixed_int8;
54  }
55  if (%HasFixedUint8Elements(obj)) {
56    return elements_kind.fixed_uint8;
57  }
58  if (%HasFixedInt16Elements(obj)) {
59    return elements_kind.fixed_int16;
60  }
61  if (%HasFixedUint16Elements(obj)) {
62    return elements_kind.fixed_uint16;
63  }
64  if (%HasFixedInt32Elements(obj)) {
65    return elements_kind.fixed_int32;
66  }
67  if (%HasFixedUint32Elements(obj)) {
68    return elements_kind.fixed_uint32;
69  }
70  if (%HasFixedFloat32Elements(obj)) {
71    return elements_kind.fixed_float32;
72  }
73  if (%HasFixedFloat64Elements(obj)) {
74    return elements_kind.fixed_float64;
75  }
76  if (%HasFixedUint8ClampedElements(obj)) {
77    return elements_kind.fixed_uint8_clamped;
78  }
79}
80
81function assertKind(expected, obj, name_opt) {
82  assertEquals(expected, getKind(obj), name_opt);
83}
84
85var me = {};
86assertKind(elements_kind.fast, me);
87me.dance = 0xD15C0;
88me.drink = 0xC0C0A;
89assertKind(elements_kind.fast, me);
90
91var too = [1,2,3];
92assertKind(elements_kind.fast_smi_only, too);
93too.dance = 0xD15C0;
94too.drink = 0xC0C0A;
95assertKind(elements_kind.fast_smi_only, too);
96
97// Make sure the element kind transitions from smi when a non-smi is stored.
98function test_wrapper() {
99  var you = new Array();
100  assertKind(elements_kind.fast_smi_only, you);
101  for (var i = 0; i < 1337; i++) {
102    var val = i;
103    if (i == 1336) {
104      assertKind(elements_kind.fast_smi_only, you);
105      val = new Object();
106    }
107    you[i] = val;
108  }
109  assertKind(elements_kind.fast, you);
110
111  var temp = [];
112  temp[0xDECAF] = 0;
113  assertKind(elements_kind.dictionary, temp);
114
115  var fast_double_array = new Array(0xDECAF);
116  for (var i = 0; i < 0xDECAF; i++) fast_double_array[i] = i / 2;
117  assertKind(elements_kind.fast_double, fast_double_array);
118
119  assertKind(elements_kind.fixed_int8,    new Int8Array(007));
120  assertKind(elements_kind.fixed_uint8,   new Uint8Array(007));
121  assertKind(elements_kind.fixed_int16,   new Int16Array(666));
122  assertKind(elements_kind.fixed_uint16,  new Uint16Array(42));
123  assertKind(elements_kind.fixed_int32,   new Int32Array(0xF));
124  assertKind(elements_kind.fixed_uint32,  new Uint32Array(23));
125  assertKind(elements_kind.fixed_float32, new Float32Array(7));
126  assertKind(elements_kind.fixed_float64, new Float64Array(0));
127  assertKind(elements_kind.fixed_uint8_clamped, new Uint8ClampedArray(512));
128
129  var ab = new ArrayBuffer(128);
130  assertKind(elements_kind.fixed_int8,    new Int8Array(ab));
131  assertKind(elements_kind.fixed_uint8,   new Uint8Array(ab));
132  assertKind(elements_kind.fixed_int16,   new Int16Array(ab));
133  assertKind(elements_kind.fixed_uint16,  new Uint16Array(ab));
134  assertKind(elements_kind.fixed_int32,   new Int32Array(ab));
135  assertKind(elements_kind.fixed_uint32,  new Uint32Array(ab));
136  assertKind(elements_kind.fixed_float32, new Float32Array(ab));
137  assertKind(elements_kind.fixed_float64, new Float64Array(ab));
138  assertKind(elements_kind.fixed_uint8_clamped, new Uint8ClampedArray(ab));
139
140  // Crankshaft support for smi-only array elements.
141  function monomorphic(array) {
142    assertKind(elements_kind.fast_smi_only, array);
143    for (var i = 0; i < 3; i++) {
144      array[i] = i + 10;
145    }
146    assertKind(elements_kind.fast_smi_only, array);
147    for (var i = 0; i < 3; i++) {
148      var a = array[i];
149      assertEquals(i + 10, a);
150    }
151  }
152  var smi_only = new Array(1, 2, 3);
153  assertKind(elements_kind.fast_smi_only, smi_only);
154  for (var i = 0; i < 3; i++) monomorphic(smi_only);
155    %OptimizeFunctionOnNextCall(monomorphic);
156  monomorphic(smi_only);
157}
158
159// The test is called in a wrapper function to eliminate the transition learning
160// feedback of AllocationSites.
161test_wrapper();
162%ClearFunctionTypeFeedback(test_wrapper);
163
164%NeverOptimizeFunction(construct_smis);
165
166// This code exists to eliminate the learning influence of AllocationSites
167// on the following tests.
168var __sequence = 0;
169function make_array_string() {
170  this.__sequence = this.__sequence + 1;
171  return "/* " + this.__sequence + " */  [0, 0, 0];"
172}
173function make_array() {
174  return eval(make_array_string());
175}
176
177function construct_smis() {
178  var a = make_array();
179  a[0] = 0;  // Send the COW array map to the steak house.
180  assertKind(elements_kind.fast_smi_only, a);
181  return a;
182}
183  %NeverOptimizeFunction(construct_doubles);
184function construct_doubles() {
185  var a = construct_smis();
186  a[0] = 1.5;
187  assertKind(elements_kind.fast_double, a);
188  return a;
189}
190  %NeverOptimizeFunction(construct_objects);
191function construct_objects() {
192  var a = construct_smis();
193  a[0] = "one";
194  assertKind(elements_kind.fast, a);
195  return a;
196}
197
198// Test crankshafted transition SMI->DOUBLE.
199  %NeverOptimizeFunction(convert_to_double);
200function convert_to_double(array) {
201  array[1] = 2.5;
202  assertKind(elements_kind.fast_double, array);
203  assertEquals(2.5, array[1]);
204}
205var smis = construct_smis();
206for (var i = 0; i < 3; i++) convert_to_double(smis);
207  %OptimizeFunctionOnNextCall(convert_to_double);
208smis = construct_smis();
209convert_to_double(smis);
210// Test crankshafted transitions SMI->FAST and DOUBLE->FAST.
211  %NeverOptimizeFunction(convert_to_fast);
212function convert_to_fast(array) {
213  array[1] = "two";
214  assertKind(elements_kind.fast, array);
215  assertEquals("two", array[1]);
216}
217smis = construct_smis();
218for (var i = 0; i < 3; i++) convert_to_fast(smis);
219var doubles = construct_doubles();
220for (var i = 0; i < 3; i++) convert_to_fast(doubles);
221smis = construct_smis();
222doubles = construct_doubles();
223  %OptimizeFunctionOnNextCall(convert_to_fast);
224convert_to_fast(smis);
225convert_to_fast(doubles);
226// Test transition chain SMI->DOUBLE->FAST (crankshafted function will
227// transition to FAST directly).
228  %NeverOptimizeFunction(convert_mixed);
229function convert_mixed(array, value, kind) {
230  array[1] = value;
231  assertKind(kind, array);
232  assertEquals(value, array[1]);
233}
234smis = construct_smis();
235for (var i = 0; i < 3; i++) {
236  convert_mixed(smis, 1.5, elements_kind.fast_double);
237}
238doubles = construct_doubles();
239for (var i = 0; i < 3; i++) {
240  convert_mixed(doubles, "three", elements_kind.fast);
241}
242convert_mixed(construct_smis(), "three", elements_kind.fast);
243convert_mixed(construct_doubles(), "three", elements_kind.fast);
244  %OptimizeFunctionOnNextCall(convert_mixed);
245smis = construct_smis();
246doubles = construct_doubles();
247convert_mixed(smis, 1, elements_kind.fast);
248convert_mixed(doubles, 1, elements_kind.fast);
249assertTrue(%HaveSameMap(smis, doubles));
250
251// Crankshaft support for smi-only elements in dynamic array literals.
252function get(foo) { return foo; }  // Used to generate dynamic values.
253
254function crankshaft_test() {
255  var a1 = [get(1), get(2), get(3)];
256  assertKind(elements_kind.fast_smi_only, a1);
257
258  var a2 = new Array(get(1), get(2), get(3));
259  assertKind(elements_kind.fast_smi_only, a2);
260  var b = [get(1), get(2), get("three")];
261  assertKind(elements_kind.fast, b);
262  var c = [get(1), get(2), get(3.5)];
263  assertKind(elements_kind.fast_double, c);
264}
265for (var i = 0; i < 3; i++) {
266  crankshaft_test();
267}
268%OptimizeFunctionOnNextCall(crankshaft_test);
269crankshaft_test();
270
271// Elements_kind transitions for arrays.
272
273// A map can have three different elements_kind transitions: SMI->DOUBLE,
274// DOUBLE->OBJECT, and SMI->OBJECT. No matter in which order these three are
275// created, they must always end up with the same FAST map.
276
277// Preparation: create one pair of identical objects for each case.
278var a = [1, 2, 3];
279var b = [1, 2, 3];
280assertTrue(%HaveSameMap(a, b));
281assertKind(elements_kind.fast_smi_only, a);
282var c = [1, 2, 3];
283c["case2"] = true;
284var d = [1, 2, 3];
285d["case2"] = true;
286assertTrue(%HaveSameMap(c, d));
287assertFalse(%HaveSameMap(a, c));
288assertKind(elements_kind.fast_smi_only, c);
289var e = [1, 2, 3];
290e["case3"] = true;
291var f = [1, 2, 3];
292f["case3"] = true;
293assertTrue(%HaveSameMap(e, f));
294assertFalse(%HaveSameMap(a, e));
295assertFalse(%HaveSameMap(c, e));
296assertKind(elements_kind.fast_smi_only, e);
297// Case 1: SMI->DOUBLE, DOUBLE->OBJECT, SMI->OBJECT.
298a[0] = 1.5;
299assertKind(elements_kind.fast_double, a);
300a[0] = "foo";
301assertKind(elements_kind.fast, a);
302b[0] = "bar";
303assertTrue(%HaveSameMap(a, b));
304// Case 2: SMI->DOUBLE, SMI->OBJECT, DOUBLE->OBJECT.
305c[0] = 1.5;
306assertKind(elements_kind.fast_double, c);
307assertFalse(%HaveSameMap(c, d));
308d[0] = "foo";
309assertKind(elements_kind.fast, d);
310assertFalse(%HaveSameMap(c, d));
311c[0] = "bar";
312assertTrue(%HaveSameMap(c, d));
313// Case 3: SMI->OBJECT, SMI->DOUBLE, DOUBLE->OBJECT.
314e[0] = "foo";
315assertKind(elements_kind.fast, e);
316assertFalse(%HaveSameMap(e, f));
317f[0] = 1.5;
318assertKind(elements_kind.fast_double, f);
319assertFalse(%HaveSameMap(e, f));
320f[0] = "bar";
321assertKind(elements_kind.fast, f);
322assertTrue(%HaveSameMap(e, f));
323
324// Test if Array.concat() works correctly with DOUBLE elements.
325var a = [1, 2];
326assertKind(elements_kind.fast_smi_only, a);
327var b = [4.5, 5.5];
328assertKind(elements_kind.fast_double, b);
329var c = a.concat(b);
330assertEquals([1, 2, 4.5, 5.5], c);
331assertKind(elements_kind.fast_double, c);
332
333// Test that Array.push() correctly handles SMI elements.
334var a = [1, 2];
335assertKind(elements_kind.fast_smi_only, a);
336a.push(3, 4, 5);
337assertKind(elements_kind.fast_smi_only, a);
338assertEquals([1, 2, 3, 4, 5], a);
339
340// Test that Array.splice() and Array.slice() return correct ElementsKinds.
341var a = ["foo", "bar"];
342assertKind(elements_kind.fast, a);
343var b = a.splice(0, 1);
344assertKind(elements_kind.fast, b);
345var c = a.slice(0, 1);
346assertKind(elements_kind.fast, c);
347
348// Throw away type information in the ICs for next stress run.
349gc();
350