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 --noenable-sse2
29
30// Helper
31function assertInstance(o, f) {
32  assertSame(o.constructor, f);
33  assertInstanceof(o, f);
34}
35
36// This is a regression test for overlapping key and value registers.
37function f(a) {
38  a[0] = 0;
39  a[1] = 0;
40}
41
42var a = new Int32Array(2);
43for (var i = 0; i < 5; i++) {
44  f(a);
45}
46%OptimizeFunctionOnNextCall(f);
47f(a);
48
49assertEquals(0, a[0]);
50assertEquals(0, a[1]);
51
52// Test derivation from an ArrayBuffer
53var ab = new ArrayBuffer(12);
54assertInstance(ab, ArrayBuffer);
55var derived_uint8 = new Uint8Array(ab);
56assertInstance(derived_uint8, Uint8Array);
57assertSame(ab, derived_uint8.buffer);
58assertEquals(12, derived_uint8.length);
59assertEquals(12, derived_uint8.byteLength);
60assertEquals(0, derived_uint8.byteOffset);
61assertEquals(1, derived_uint8.BYTES_PER_ELEMENT);
62var derived_uint8_2 = new Uint8Array(ab,7);
63assertInstance(derived_uint8_2, Uint8Array);
64assertSame(ab, derived_uint8_2.buffer);
65assertEquals(5, derived_uint8_2.length);
66assertEquals(5, derived_uint8_2.byteLength);
67assertEquals(7, derived_uint8_2.byteOffset);
68assertEquals(1, derived_uint8_2.BYTES_PER_ELEMENT);
69var derived_int16 = new Int16Array(ab);
70assertInstance(derived_int16, Int16Array);
71assertSame(ab, derived_int16.buffer);
72assertEquals(6, derived_int16.length);
73assertEquals(12, derived_int16.byteLength);
74assertEquals(0, derived_int16.byteOffset);
75assertEquals(2, derived_int16.BYTES_PER_ELEMENT);
76var derived_int16_2 = new Int16Array(ab,6);
77assertInstance(derived_int16_2, Int16Array);
78assertSame(ab, derived_int16_2.buffer);
79assertEquals(3, derived_int16_2.length);
80assertEquals(6, derived_int16_2.byteLength);
81assertEquals(6, derived_int16_2.byteOffset);
82assertEquals(2, derived_int16_2.BYTES_PER_ELEMENT);
83var derived_uint32 = new Uint32Array(ab);
84assertInstance(derived_uint32, Uint32Array);
85assertSame(ab, derived_uint32.buffer);
86assertEquals(3, derived_uint32.length);
87assertEquals(12, derived_uint32.byteLength);
88assertEquals(0, derived_uint32.byteOffset);
89assertEquals(4, derived_uint32.BYTES_PER_ELEMENT);
90var derived_uint32_2 = new Uint32Array(ab,4);
91assertInstance(derived_uint32_2, Uint32Array);
92assertSame(ab, derived_uint32_2.buffer);
93assertEquals(2, derived_uint32_2.length);
94assertEquals(8, derived_uint32_2.byteLength);
95assertEquals(4, derived_uint32_2.byteOffset);
96assertEquals(4, derived_uint32_2.BYTES_PER_ELEMENT);
97var derived_uint32_3 = new Uint32Array(ab,4,1);
98assertInstance(derived_uint32_3, Uint32Array);
99assertSame(ab, derived_uint32_3.buffer);
100assertEquals(1, derived_uint32_3.length);
101assertEquals(4, derived_uint32_3.byteLength);
102assertEquals(4, derived_uint32_3.byteOffset);
103assertEquals(4, derived_uint32_3.BYTES_PER_ELEMENT);
104var derived_float64 = new Float64Array(ab,0,1);
105assertInstance(derived_float64, Float64Array);
106assertSame(ab, derived_float64.buffer);
107assertEquals(1, derived_float64.length);
108assertEquals(8, derived_float64.byteLength);
109assertEquals(0, derived_float64.byteOffset);
110assertEquals(8, derived_float64.BYTES_PER_ELEMENT);
111
112// If a given byteOffset and length references an area beyond the end of the
113// ArrayBuffer an exception is raised.
114function abfunc3() {
115  new Uint32Array(ab,4,3);
116}
117assertThrows(abfunc3);
118function abfunc4() {
119  new Uint32Array(ab,16);
120}
121assertThrows(abfunc4);
122
123// The given byteOffset must be a multiple of the element size of the specific
124// type, otherwise an exception is raised.
125function abfunc5() {
126  new Uint32Array(ab,5);
127}
128assertThrows(abfunc5);
129
130// If length is not explicitly specified, the length of the ArrayBuffer minus
131// the byteOffset must be a multiple of the element size of the specific type,
132// or an exception is raised.
133var ab2 = new ArrayBuffer(13);
134function abfunc6() {
135  new Uint32Array(ab2,4);
136}
137assertThrows(abfunc6);
138
139// Test that an array constructed without an array buffer creates one properly.
140a = new Uint8Array(31);
141assertEquals(a.byteLength, a.buffer.byteLength);
142assertEquals(a.length, a.buffer.byteLength);
143assertEquals(a.length * a.BYTES_PER_ELEMENT, a.buffer.byteLength);
144a = new Int16Array(5);
145assertEquals(a.byteLength, a.buffer.byteLength);
146assertEquals(a.length * a.BYTES_PER_ELEMENT, a.buffer.byteLength);
147a = new Float64Array(7);
148assertEquals(a.byteLength, a.buffer.byteLength);
149assertEquals(a.length * a.BYTES_PER_ELEMENT, a.buffer.byteLength);
150
151// Test that an implicitly created buffer is a valid buffer.
152a = new Float64Array(7);
153assertSame(a.buffer, (new Uint16Array(a.buffer)).buffer);
154assertSame(a.buffer, (new Float32Array(a.buffer,4)).buffer);
155assertSame(a.buffer, (new Int8Array(a.buffer,3,51)).buffer);
156assertInstance(a.buffer, ArrayBuffer);
157
158// Test the correct behavior of the |BYTES_PER_ELEMENT| property.
159a = new Int32Array(2);
160assertEquals(4, a.BYTES_PER_ELEMENT);
161a.BYTES_PER_ELEMENT = 42;
162a = new Uint8Array(2);
163assertEquals(1, a.BYTES_PER_ELEMENT);
164a = new Int16Array(2);
165assertEquals(2, a.BYTES_PER_ELEMENT);
166
167// Test Float64Arrays.
168function get(a, index) {
169  return a[index];
170}
171function set(a, index, value) {
172  a[index] = value;
173}
174function temp() {
175var array = new Float64Array(2);
176for (var i = 0; i < 5; i++) {
177  set(array, 0, 2.5);
178  assertEquals(2.5, array[0]);
179}
180%OptimizeFunctionOnNextCall(set);
181set(array, 0, 2.5);
182assertEquals(2.5, array[0]);
183set(array, 1, 3.5);
184assertEquals(3.5, array[1]);
185for (var i = 0; i < 5; i++) {
186  assertEquals(2.5, get(array, 0));
187  assertEquals(3.5, array[1]);
188}
189%OptimizeFunctionOnNextCall(get);
190assertEquals(2.5, get(array, 0));
191assertEquals(3.5, get(array, 1));
192}
193
194// Test non-number parameters.
195var array_with_length_from_non_number = new Int32Array("2");
196assertEquals(2, array_with_length_from_non_number.length);
197
198// Test loads and stores.
199types = [Array, Int8Array, Uint8Array, Int16Array, Uint16Array, Int32Array,
200         Uint32Array, Uint8ClampedArray, Float32Array, Float64Array];
201
202test_result_nan = [NaN, 0, 0, 0, 0, 0, 0, 0, NaN, NaN];
203test_result_low_int = [-1, -1, 255, -1, 65535, -1, 0xFFFFFFFF, 0, -1, -1];
204test_result_low_double = [-1.25, -1, 255, -1, 65535, -1, 0xFFFFFFFF, 0, -1.25, -1.25];
205test_result_middle = [253.75, -3, 253, 253, 253, 253, 253, 254, 253.75, 253.75];
206test_result_high_int = [256, 0, 0, 256, 256, 256, 256, 255, 256, 256];
207test_result_high_double = [256.25, 0, 0, 256, 256, 256, 256, 255, 256.25, 256.25];
208
209const kElementCount = 40;
210
211function test_load(array, sum) {
212  for (var i = 0; i < kElementCount; i++) {
213    sum += array[i];
214  }
215  return sum;
216}
217
218function test_load_const_key(array, sum) {
219  sum += array[0];
220  sum += array[1];
221  sum += array[2];
222  return sum;
223}
224
225function test_store(array, sum) {
226  for (var i = 0; i < kElementCount; i++) {
227    sum += array[i] = i+1;
228  }
229  return sum;
230}
231
232function test_store_const_key(array, sum) {
233  sum += array[0] = 1;
234  sum += array[1] = 2;
235  sum += array[2] = 3;
236  return sum;
237}
238
239function zero() {
240  return 0.0;
241}
242
243function test_store_middle_tagged(array, sum) {
244  array[0] = 253.75;
245  return array[0];
246}
247
248function test_store_high_tagged(array, sum) {
249  array[0] = 256.25;
250  return array[0];
251}
252
253function test_store_middle_double(array, sum) {
254  array[0] = 253.75 + zero(); // + forces double type feedback
255  return array[0];
256}
257
258function test_store_high_double(array, sum) {
259  array[0] = 256.25 + zero(); // + forces double type feedback
260  return array[0];
261}
262
263function test_store_high_double(array, sum) {
264  array[0] = 256.25;
265  return array[0];
266}
267
268function test_store_low_int(array, sum) {
269  array[0] = -1;
270  return array[0];
271}
272
273function test_store_low_tagged(array, sum) {
274  array[0] = -1.25;
275  return array[0];
276}
277
278function test_store_low_double(array, sum) {
279  array[0] = -1.25 + zero(); // + forces double type feedback
280  return array[0];
281}
282
283function test_store_high_int(array, sum) {
284  array[0] = 256;
285  return array[0];
286}
287
288function test_store_nan(array, sum) {
289  array[0] = NaN;
290  return array[0];
291}
292
293const kRuns = 10;
294
295function run_test(test_func, array, expected_result) {
296  for (var i = 0; i < 5; i++) test_func(array, 0);
297  %OptimizeFunctionOnNextCall(test_func);
298  var sum = 0;
299  for (var i = 0; i < kRuns; i++) {
300    sum = test_func(array, sum);
301  }
302  assertEquals(expected_result, sum);
303  %DeoptimizeFunction(test_func);
304  %ClearFunctionTypeFeedback(test_func);
305}
306
307function run_bounds_test(test_func, array, expected_result) {
308  assertEquals(undefined, a[kElementCount]);
309  a[kElementCount] = 456;
310  assertEquals(undefined, a[kElementCount]);
311  assertEquals(undefined, a[kElementCount+1]);
312  a[kElementCount+1] = 456;
313  assertEquals(undefined, a[kElementCount+1]);
314}
315
316for (var t = 0; t < types.length; t++) {
317  var type = types[t];
318  var a = new type(kElementCount);
319
320  for (var i = 0; i < kElementCount; i++) {
321    a[i] = i;
322  }
323
324  // Run test functions defined above.
325  run_test(test_load, a, 780 * kRuns);
326  run_test(test_load_const_key, a, 3 * kRuns);
327  run_test(test_store, a, 820 * kRuns);
328  run_test(test_store_const_key, a, 6 * kRuns);
329  run_test(test_store_low_int, a, test_result_low_int[t]);
330  run_test(test_store_low_double, a, test_result_low_double[t]);
331  run_test(test_store_low_tagged, a, test_result_low_double[t]);
332  run_test(test_store_high_int, a, test_result_high_int[t]);
333  run_test(test_store_nan, a, test_result_nan[t]);
334  run_test(test_store_middle_double, a, test_result_middle[t]);
335  run_test(test_store_middle_tagged, a, test_result_middle[t]);
336  run_test(test_store_high_double, a, test_result_high_double[t]);
337  run_test(test_store_high_tagged, a, test_result_high_double[t]);
338
339  // Test the correct behavior of the |length| property (which is read-only).
340  if (t != 0) {
341    assertEquals(kElementCount, a.length);
342    a.length = 2;
343    assertEquals(kElementCount, a.length);
344    assertTrue(delete a.length);
345
346    // Make sure bounds checks are handled correctly for external arrays.
347    run_bounds_test(a);
348    run_bounds_test(a);
349    run_bounds_test(a);
350    %OptimizeFunctionOnNextCall(run_bounds_test);
351    run_bounds_test(a);
352    %DeoptimizeFunction(run_bounds_test);
353    %ClearFunctionTypeFeedback(run_bounds_test);
354  }
355
356  function array_load_set_smi_check(a) {
357    return a[0] = a[0] = 1;
358  }
359
360  array_load_set_smi_check(a);
361  array_load_set_smi_check(0);
362
363  function array_load_set_smi_check2(a) {
364    return a[0] = a[0] = 1;
365  }
366
367  array_load_set_smi_check2(a);
368  %OptimizeFunctionOnNextCall(array_load_set_smi_check2);
369  array_load_set_smi_check2(a);
370  array_load_set_smi_check2(0);
371  %DeoptimizeFunction(array_load_set_smi_check2);
372  %ClearFunctionTypeFeedback(array_load_set_smi_check2);
373}
374
375// Check handling of undefined in 32- and 64-bit external float arrays.
376
377function store_float32_undefined(ext_array) {
378  ext_array[0] = undefined;
379}
380
381var float32_array = new Float32Array(1);
382// Make sure runtime does it right
383store_float32_undefined(float32_array);
384assertTrue(isNaN(float32_array[0]));
385// Make sure the ICs do it right
386store_float32_undefined(float32_array);
387assertTrue(isNaN(float32_array[0]));
388// Make sure that Cranskshft does it right.
389%OptimizeFunctionOnNextCall(store_float32_undefined);
390store_float32_undefined(float32_array);
391assertTrue(isNaN(float32_array[0]));
392
393function store_float64_undefined(ext_array) {
394  ext_array[0] = undefined;
395}
396
397var float64_array = new Float64Array(1);
398// Make sure runtime does it right
399store_float64_undefined(float64_array);
400assertTrue(isNaN(float64_array[0]));
401// Make sure the ICs do it right
402store_float64_undefined(float64_array);
403assertTrue(isNaN(float64_array[0]));
404// Make sure that Cranskshft does it right.
405%OptimizeFunctionOnNextCall(store_float64_undefined);
406store_float64_undefined(float64_array);
407assertTrue(isNaN(float64_array[0]));
408
409
410// Check handling of 0-sized buffers and arrays.
411ab = new ArrayBuffer(0);
412assertInstance(ab, ArrayBuffer);
413assertEquals(0, ab.byteLength);
414a = new Int8Array(ab);
415assertInstance(a, Int8Array);
416assertEquals(0, a.byteLength);
417assertEquals(0, a.length);
418a[0] = 1;
419assertEquals(undefined, a[0]);
420ab = new ArrayBuffer(16);
421assertInstance(ab, ArrayBuffer);
422a = new Float32Array(ab,4,0);
423assertInstance(a, Float32Array);
424assertEquals(0, a.byteLength);
425assertEquals(0, a.length);
426a[0] = 1;
427assertEquals(undefined, a[0]);
428a = new Uint16Array(0);
429assertInstance(a, Uint16Array);
430assertEquals(0, a.byteLength);
431assertEquals(0, a.length);
432a[0] = 1;
433assertEquals(undefined, a[0]);
434
435
436// Check construction from arrays.
437a = new Uint32Array([]);
438assertInstance(a, Uint32Array);
439assertEquals(0, a.length);
440assertEquals(0, a.byteLength);
441assertEquals(0, a.buffer.byteLength);
442assertEquals(4, a.BYTES_PER_ELEMENT);
443assertInstance(a.buffer, ArrayBuffer);
444a = new Uint16Array([1,2,3]);
445assertInstance(a, Uint16Array);
446assertEquals(3, a.length);
447assertEquals(6, a.byteLength);
448assertEquals(6, a.buffer.byteLength);
449assertEquals(2, a.BYTES_PER_ELEMENT);
450assertEquals(1, a[0]);
451assertEquals(3, a[2]);
452assertInstance(a.buffer, ArrayBuffer);
453a = new Uint32Array(a);
454assertInstance(a, Uint32Array);
455assertEquals(3, a.length);
456assertEquals(12, a.byteLength);
457assertEquals(12, a.buffer.byteLength);
458assertEquals(4, a.BYTES_PER_ELEMENT);
459assertEquals(1, a[0]);
460assertEquals(3, a[2]);
461assertInstance(a.buffer, ArrayBuffer);
462
463// Check subarrays.
464a = new Uint16Array([1,2,3,4,5,6]);
465aa = a.subarray(3);
466assertInstance(aa, Uint16Array);
467assertEquals(3, aa.length);
468assertEquals(6, aa.byteLength);
469assertEquals(2, aa.BYTES_PER_ELEMENT);
470assertSame(a.buffer, aa.buffer);
471aa = a.subarray(3,5);
472assertInstance(aa, Uint16Array);
473assertEquals(2, aa.length);
474assertEquals(4, aa.byteLength);
475assertEquals(2, aa.BYTES_PER_ELEMENT);
476assertSame(a.buffer, aa.buffer);
477aa = a.subarray(4,8);
478assertInstance(aa, Uint16Array);
479assertEquals(2, aa.length);
480assertEquals(4, aa.byteLength);
481assertEquals(2, aa.BYTES_PER_ELEMENT);
482assertSame(a.buffer, aa.buffer);
483aa = a.subarray(9);
484assertInstance(aa, Uint16Array);
485assertEquals(0, aa.length);
486assertEquals(0, aa.byteLength);
487assertEquals(2, aa.BYTES_PER_ELEMENT);
488assertSame(a.buffer, aa.buffer);
489aa = a.subarray(-4);
490assertInstance(aa, Uint16Array);
491assertEquals(4, aa.length);
492assertEquals(8, aa.byteLength);
493assertEquals(2, aa.BYTES_PER_ELEMENT);
494assertSame(a.buffer, aa.buffer);
495aa = a.subarray(-3,-1);
496assertInstance(aa, Uint16Array);
497assertEquals(2, aa.length);
498assertEquals(4, aa.byteLength);
499assertEquals(2, aa.BYTES_PER_ELEMENT);
500assertSame(a.buffer, aa.buffer);
501aa = a.subarray(3,2);
502assertInstance(aa, Uint16Array);
503assertEquals(0, aa.length);
504assertEquals(0, aa.byteLength);
505assertEquals(2, aa.BYTES_PER_ELEMENT);
506assertSame(a.buffer, aa.buffer);
507aa = a.subarray(-3,-4);
508assertInstance(aa, Uint16Array);
509assertEquals(0, aa.length);
510assertEquals(0, aa.byteLength);
511assertEquals(2, aa.BYTES_PER_ELEMENT);
512assertSame(a.buffer, aa.buffer);
513aa = a.subarray(0,-8);
514assertInstance(aa, Uint16Array);
515assertEquals(0, aa.length);
516assertEquals(0, aa.byteLength);
517assertEquals(2, aa.BYTES_PER_ELEMENT);
518assertSame(a.buffer, aa.buffer);
519
520assertThrows(function(){ a.subarray.call({}, 0) });
521assertThrows(function(){ a.subarray.call([], 0) });
522
523// Try to call constructors directly as functions, and through .call
524// and .apply. Should fail.
525
526assertThrows(function() { ArrayBuffer(100); }, TypeError);
527assertThrows(function() { Int8Array(b, 5, 77); }, TypeError);
528assertThrows(function() { ArrayBuffer.call(null, 10); }, TypeError);
529assertThrows(function() { Uint16Array.call(null, b, 2, 4); }, TypeError);
530assertThrows(function() { ArrayBuffer.apply(null, [1000]); }, TypeError);
531assertThrows(function() { Float32Array.apply(null, [b, 128, 1]); }, TypeError);
532
533// Test array.set in different combinations.
534
535function assertArrayPrefix(expected, array) {
536  for (var i = 0; i < expected.length; ++i) {
537    assertEquals(expected[i], array[i]);
538  }
539}
540
541var a11 = new Int16Array([1, 2, 3, 4, 0, -1])
542var a12 = new Uint16Array(15)
543a12.set(a11, 3)
544assertArrayPrefix([0, 0, 0, 1, 2, 3, 4, 0, 0xffff, 0, 0], a12)
545assertThrows(function(){ a11.set(a12) })
546
547var a21 = [1, undefined, 10, NaN, 0, -1, {valueOf: function() {return 3}}]
548var a22 = new Int32Array(12)
549a22.set(a21, 2)
550assertArrayPrefix([0, 0, 1, 0, 10, 0, 0, -1, 3, 0], a22)
551
552var a31 = new Float32Array([2, 4, 6, 8, 11, NaN, 1/0, -3])
553var a32 = a31.subarray(2, 6)
554a31.set(a32, 4)
555assertArrayPrefix([2, 4, 6, 8, 6, 8, 11, NaN], a31)
556assertArrayPrefix([6, 8, 6, 8], a32)
557
558var a4 = new Uint8ClampedArray([3,2,5,6])
559a4.set(a4)
560assertArrayPrefix([3, 2, 5, 6], a4)
561
562// Cases with overlapping backing store but different element sizes.
563var b = new ArrayBuffer(4)
564var a5 = new Int16Array(b)
565var a50 = new Int8Array(b)
566var a51 = new Int8Array(b, 0, 2)
567var a52 = new Int8Array(b, 1, 2)
568var a53 = new Int8Array(b, 2, 2)
569
570a5.set([0x5050, 0x0a0a])
571assertArrayPrefix([0x50, 0x50, 0x0a, 0x0a], a50)
572assertArrayPrefix([0x50, 0x50], a51)
573assertArrayPrefix([0x50, 0x0a], a52)
574assertArrayPrefix([0x0a, 0x0a], a53)
575
576a50.set([0x50, 0x50, 0x0a, 0x0a])
577a51.set(a5)
578assertArrayPrefix([0x50, 0x0a, 0x0a, 0x0a], a50)
579
580a50.set([0x50, 0x50, 0x0a, 0x0a])
581a52.set(a5)
582assertArrayPrefix([0x50, 0x50, 0x0a, 0x0a], a50)
583
584a50.set([0x50, 0x50, 0x0a, 0x0a])
585a53.set(a5)
586assertArrayPrefix([0x50, 0x50, 0x50, 0x0a], a50)
587
588a50.set([0x50, 0x51, 0x0a, 0x0b])
589a5.set(a51)
590assertArrayPrefix([0x0050, 0x0051], a5)
591
592a50.set([0x50, 0x51, 0x0a, 0x0b])
593a5.set(a52)
594assertArrayPrefix([0x0051, 0x000a], a5)
595
596a50.set([0x50, 0x51, 0x0a, 0x0b])
597a5.set(a53)
598assertArrayPrefix([0x000a, 0x000b], a5)
599
600// Mixed types of same size.
601var a61 = new Float32Array([1.2, 12.3])
602var a62 = new Int32Array(2)
603a62.set(a61)
604assertArrayPrefix([1, 12], a62)
605a61.set(a62)
606assertArrayPrefix([1, 12], a61)
607
608// Invalid source
609assertThrows(function() { a.set(0); }, TypeError);
610assertArrayPrefix([1,2,3,4,5,6], a);
611a.set({}); // does not throw
612assertArrayPrefix([1,2,3,4,5,6], a);
613
614
615// Test arraybuffer.slice
616
617var a0 = new Int8Array([1, 2, 3, 4, 5, 6])
618var b0 = a0.buffer
619
620var b1 = b0.slice(0)
621assertEquals(b0.byteLength, b1.byteLength)
622assertArrayPrefix([1, 2, 3, 4, 5, 6], new Int8Array(b1))
623
624var b2 = b0.slice(3)
625assertEquals(b0.byteLength - 3, b2.byteLength)
626assertArrayPrefix([4, 5, 6], new Int8Array(b2))
627
628var b3 = b0.slice(2, 4)
629assertEquals(2, b3.byteLength)
630assertArrayPrefix([3, 4], new Int8Array(b3))
631
632function goo(a, i) {
633  return a[i];
634}
635
636function boo(a, i, v) {
637  return a[i] = v;
638}
639
640function do_tagged_index_external_array_test(constructor) {
641  var t_array = new constructor([1, 2, 3, 4, 5, 6]);
642  assertEquals(1, goo(t_array, 0));
643  assertEquals(1, goo(t_array, 0));
644  boo(t_array, 0, 13);
645  assertEquals(13, goo(t_array, 0));
646  %OptimizeFunctionOnNextCall(goo);
647  %OptimizeFunctionOnNextCall(boo);
648  boo(t_array, 0, 15);
649  assertEquals(15, goo(t_array, 0));
650  %ClearFunctionTypeFeedback(goo);
651  %ClearFunctionTypeFeedback(boo);
652}
653
654do_tagged_index_external_array_test(Int8Array);
655do_tagged_index_external_array_test(Uint8Array);
656do_tagged_index_external_array_test(Int16Array);
657do_tagged_index_external_array_test(Uint16Array);
658do_tagged_index_external_array_test(Int32Array);
659do_tagged_index_external_array_test(Uint32Array);
660do_tagged_index_external_array_test(Float32Array);
661do_tagged_index_external_array_test(Float64Array);
662
663var built_in_array = new Array(1, 2, 3, 4, 5, 6);
664assertEquals(1, goo(built_in_array, 0));
665assertEquals(1, goo(built_in_array, 0));
666%OptimizeFunctionOnNextCall(goo);
667%OptimizeFunctionOnNextCall(boo);
668boo(built_in_array, 0, 11);
669assertEquals(11, goo(built_in_array, 0));
670%ClearFunctionTypeFeedback(goo);
671%ClearFunctionTypeFeedback(boo);
672
673built_in_array = new Array(1.5, 2, 3, 4, 5, 6);
674assertEquals(1.5, goo(built_in_array, 0));
675assertEquals(1.5, goo(built_in_array, 0));
676%OptimizeFunctionOnNextCall(goo);
677%OptimizeFunctionOnNextCall(boo);
678boo(built_in_array, 0, 2.5);
679assertEquals(2.5, goo(built_in_array, 0));
680%ClearFunctionTypeFeedback(goo);
681%ClearFunctionTypeFeedback(boo);
682
683// Check all int range edge cases
684function checkRange() {
685  var e32 = Math.pow(2,32); var e31 = Math.pow(2,31);
686  var e16 = Math.pow(2,16); var e15 = Math.pow(2,15);
687  var e8 = Math.pow(2,8);   var e7 = Math.pow(2,7);
688  var a7 = new Uint32Array(2);  var a71 = new Int32Array(2);
689  var a72 = new Uint16Array(2); var a73 = new Int16Array(2);
690  var a74 = new Uint8Array(2);  var a75 = new Int8Array(2);
691  for (i = 1; i <= Math.pow(2,33); i *= 2) {
692    var j = i-1;
693    a7[0] = i; a71[0] = i; a72[0] = i; a73[0] = i; a74[0] = i; a75[0] = i;
694    a7[1] = j; a71[1] = j; a72[1] = j; a73[1] = j; a74[1] = j; a75[1] = j;
695
696    if (i < e32) { assertEquals(a7[0], i); } else { assertEquals(a7[0], 0); }
697    if (j < e32) { assertEquals(a7[1], j); } else { assertEquals(a7[1],e32-1); }
698    if (i < e31) { assertEquals(a71[0], i); } else {
699      assertEquals(a71[0], (i < e32) ? -e31 : 0 ); }
700    if (j < e31) { assertEquals(a71[1], j); } else { assertEquals(a71[1], -1); }
701
702    if (i < e16) { assertEquals(a72[0], i); } else { assertEquals(a72[0], 0); }
703    if (j < e16) { assertEquals(a72[1], j); } else { assertEquals(a72[1], e16-1); }
704    if (i < e15) { assertEquals(a73[0], i); } else {
705      assertEquals(a73[0], (i < e16) ? -e15 : 0 ); }
706    if (j < e15) { assertEquals(a73[1], j); } else { assertEquals(a73[1], -1); }
707
708    if (i < e8) { assertEquals(a74[0], i); } else { assertEquals(a74[0], 0); }
709    if (j < e8) { assertEquals(a74[1], j); } else { assertEquals(a74[1], e8-1); }
710    if (i < e7) { assertEquals(a75[0], i); } else {
711      assertEquals(a75[0], (i < e8) ? -e7 : 0); }
712    if (j < e7) { assertEquals(a75[1], j); } else { assertEquals(a75[1], -1); }
713  }
714}
715checkRange();
716