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1 // Copyright 2013 the V8 project authors. All rights reserved. | 1 // Copyright 2013 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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37 | 37 |
38 // support_smi_only_arrays = %HasFastSmiElements(new Array(1,2,3,4,5,6,7,8)); | 38 // support_smi_only_arrays = %HasFastSmiElements(new Array(1,2,3,4,5,6,7,8)); |
39 support_smi_only_arrays = true; | 39 support_smi_only_arrays = true; |
40 | 40 |
41 if (support_smi_only_arrays) { | 41 if (support_smi_only_arrays) { |
42 print("Tests include smi-only arrays."); | 42 print("Tests include smi-only arrays."); |
43 } else { | 43 } else { |
44 print("Tests do NOT include smi-only arrays."); | 44 print("Tests do NOT include smi-only arrays."); |
45 } | 45 } |
46 | 46 |
| 47 var elements_kind = { |
| 48 fast_smi_only : 'fast smi only elements', |
| 49 fast : 'fast elements', |
| 50 fast_double : 'fast double elements', |
| 51 dictionary : 'dictionary elements', |
| 52 external_byte : 'external byte elements', |
| 53 external_unsigned_byte : 'external unsigned byte elements', |
| 54 external_short : 'external short elements', |
| 55 external_unsigned_short : 'external unsigned short elements', |
| 56 external_int : 'external int elements', |
| 57 external_unsigned_int : 'external unsigned int elements', |
| 58 external_float : 'external float elements', |
| 59 external_double : 'external double elements', |
| 60 external_pixel : 'external pixel elements' |
| 61 } |
| 62 |
| 63 function getKind(obj) { |
| 64 if (%HasFastSmiElements(obj)) return elements_kind.fast_smi_only; |
| 65 if (%HasFastObjectElements(obj)) return elements_kind.fast; |
| 66 if (%HasFastDoubleElements(obj)) return elements_kind.fast_double; |
| 67 if (%HasDictionaryElements(obj)) return elements_kind.dictionary; |
| 68 } |
| 69 |
| 70 function isHoley(obj) { |
| 71 if (%HasFastHoleyElements(obj)) return true; |
| 72 return false; |
| 73 } |
| 74 |
| 75 function assertKind(expected, obj, name_opt) { |
| 76 if (!support_smi_only_arrays && |
| 77 expected == elements_kind.fast_smi_only) { |
| 78 expected = elements_kind.fast; |
| 79 } |
| 80 assertEquals(expected, getKind(obj), name_opt); |
| 81 } |
| 82 |
47 if (support_smi_only_arrays) { | 83 if (support_smi_only_arrays) { |
48 | 84 |
49 function get_literal(x) { | 85 function get_literal(x) { |
50 var literal = [1, 2, x]; | 86 var literal = [1, 2, x]; |
51 return literal; | 87 return literal; |
52 } | 88 } |
53 | 89 |
54 get_literal(3); | 90 get_literal(3); |
55 get_literal(3); | 91 get_literal(3); |
56 %OptimizeFunctionOnNextCall(get_literal); | 92 %OptimizeFunctionOnNextCall(get_literal); |
57 a = get_literal(3); | 93 a = get_literal(3); |
58 assertOptimized(get_literal); | 94 assertOptimized(get_literal); |
59 assertTrue(%HasFastSmiElements(a)); | 95 assertTrue(%HasFastSmiElements(a)); |
60 a[0] = 3.5; | 96 a[0] = 3.5; |
61 | 97 |
62 // We should have transitioned the boilerplate array to double, and | 98 // We should have transitioned the boilerplate array to double, and |
63 // crankshafted code should de-opt on the unexpected elements kind | 99 // crankshafted code should de-opt on the unexpected elements kind |
64 b = get_literal(3); | 100 b = get_literal(3); |
65 assertTrue(%HasFastDoubleElements(b)); | 101 assertTrue(%HasFastDoubleElements(b)); |
66 assertEquals([1, 2, 3], b); | 102 assertEquals([1, 2, 3], b); |
67 assertUnoptimized(get_literal); | 103 assertUnoptimized(get_literal); |
68 | 104 |
69 // Optimize again | 105 // Optimize again |
70 get_literal(3); | 106 get_literal(3); |
71 %OptimizeFunctionOnNextCall(get_literal); | 107 %OptimizeFunctionOnNextCall(get_literal); |
72 b = get_literal(3); | 108 b = get_literal(3); |
73 assertTrue(%HasFastDoubleElements(b)); | 109 assertTrue(%HasFastDoubleElements(b)); |
74 assertOptimized(get_literal); | 110 assertOptimized(get_literal); |
| 111 |
| 112 |
| 113 // Test: make sure allocation site information is updated through a |
| 114 // transition from SMI->DOUBLE->FAST |
| 115 (function() { |
| 116 function bar(a, b, c) { |
| 117 return [a, b, c]; |
| 118 } |
| 119 |
| 120 a = bar(1, 2, 3); |
| 121 a[0] = 3.5; |
| 122 a[1] = 'hi'; |
| 123 b = bar(1, 2, 3); |
| 124 assertKind(elements_kind.fast, b); |
| 125 })(); |
75 } | 126 } |
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