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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 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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56 EXTERNAL_BYTE_ELEMENTS, | 56 EXTERNAL_BYTE_ELEMENTS, |
57 EXTERNAL_UNSIGNED_BYTE_ELEMENTS, | 57 EXTERNAL_UNSIGNED_BYTE_ELEMENTS, |
58 EXTERNAL_SHORT_ELEMENTS, | 58 EXTERNAL_SHORT_ELEMENTS, |
59 EXTERNAL_UNSIGNED_SHORT_ELEMENTS, | 59 EXTERNAL_UNSIGNED_SHORT_ELEMENTS, |
60 EXTERNAL_INT_ELEMENTS, | 60 EXTERNAL_INT_ELEMENTS, |
61 EXTERNAL_UNSIGNED_INT_ELEMENTS, | 61 EXTERNAL_UNSIGNED_INT_ELEMENTS, |
62 EXTERNAL_FLOAT_ELEMENTS, | 62 EXTERNAL_FLOAT_ELEMENTS, |
63 EXTERNAL_DOUBLE_ELEMENTS, | 63 EXTERNAL_DOUBLE_ELEMENTS, |
64 EXTERNAL_PIXEL_ELEMENTS, | 64 EXTERNAL_PIXEL_ELEMENTS, |
65 | 65 |
66 // Fixed typed arrays | |
67 UINT8_ELEMENTS, | |
68 INT8_ELEMENTS, | |
69 UINT16_ELEMENTS, | |
70 INT16_ELEMENTS, | |
71 UINT32_ELEMENTS, | |
72 INT32_ELEMENTS, | |
73 FLOAT32_ELEMENTS, | |
74 FLOAT64_ELEMENTS, | |
75 UINT8_CLAMPED_ELEMENTS, | |
76 | |
77 // Derived constants from ElementsKind | 66 // Derived constants from ElementsKind |
78 FIRST_ELEMENTS_KIND = FAST_SMI_ELEMENTS, | 67 FIRST_ELEMENTS_KIND = FAST_SMI_ELEMENTS, |
79 LAST_ELEMENTS_KIND = UINT8_CLAMPED_ELEMENTS, | 68 LAST_ELEMENTS_KIND = EXTERNAL_PIXEL_ELEMENTS, |
80 FIRST_FAST_ELEMENTS_KIND = FAST_SMI_ELEMENTS, | 69 FIRST_FAST_ELEMENTS_KIND = FAST_SMI_ELEMENTS, |
81 LAST_FAST_ELEMENTS_KIND = FAST_HOLEY_DOUBLE_ELEMENTS, | 70 LAST_FAST_ELEMENTS_KIND = FAST_HOLEY_DOUBLE_ELEMENTS, |
82 FIRST_EXTERNAL_ARRAY_ELEMENTS_KIND = EXTERNAL_BYTE_ELEMENTS, | 71 FIRST_EXTERNAL_ARRAY_ELEMENTS_KIND = EXTERNAL_BYTE_ELEMENTS, |
83 LAST_EXTERNAL_ARRAY_ELEMENTS_KIND = EXTERNAL_PIXEL_ELEMENTS, | 72 LAST_EXTERNAL_ARRAY_ELEMENTS_KIND = EXTERNAL_PIXEL_ELEMENTS, |
84 FIRST_FIXED_TYPED_ARRAY_ELEMENTS_KIND = UINT8_ELEMENTS, | |
85 LAST_FIXED_TYPED_ARRAY_ELEMENTS_KIND = UINT8_CLAMPED_ELEMENTS, | |
86 TERMINAL_FAST_ELEMENTS_KIND = FAST_HOLEY_ELEMENTS | 73 TERMINAL_FAST_ELEMENTS_KIND = FAST_HOLEY_ELEMENTS |
87 }; | 74 }; |
88 | 75 |
89 const int kElementsKindCount = LAST_ELEMENTS_KIND - FIRST_ELEMENTS_KIND + 1; | 76 const int kElementsKindCount = LAST_ELEMENTS_KIND - FIRST_ELEMENTS_KIND + 1; |
90 const int kFastElementsKindCount = LAST_FAST_ELEMENTS_KIND - | 77 const int kFastElementsKindCount = LAST_FAST_ELEMENTS_KIND - |
91 FIRST_FAST_ELEMENTS_KIND + 1; | 78 FIRST_FAST_ELEMENTS_KIND + 1; |
92 | 79 |
93 // The number to add to a packed elements kind to reach a holey elements kind | 80 // The number to add to a packed elements kind to reach a holey elements kind |
94 const int kFastElementsKindPackedToHoley = | 81 const int kFastElementsKindPackedToHoley = |
95 FAST_HOLEY_SMI_ELEMENTS - FAST_SMI_ELEMENTS; | 82 FAST_HOLEY_SMI_ELEMENTS - FAST_SMI_ELEMENTS; |
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109 return kind == DICTIONARY_ELEMENTS; | 96 return kind == DICTIONARY_ELEMENTS; |
110 } | 97 } |
111 | 98 |
112 | 99 |
113 inline bool IsExternalArrayElementsKind(ElementsKind kind) { | 100 inline bool IsExternalArrayElementsKind(ElementsKind kind) { |
114 return kind >= FIRST_EXTERNAL_ARRAY_ELEMENTS_KIND && | 101 return kind >= FIRST_EXTERNAL_ARRAY_ELEMENTS_KIND && |
115 kind <= LAST_EXTERNAL_ARRAY_ELEMENTS_KIND; | 102 kind <= LAST_EXTERNAL_ARRAY_ELEMENTS_KIND; |
116 } | 103 } |
117 | 104 |
118 | 105 |
119 inline bool IsFixedTypedArrayElementsKind(ElementsKind kind) { | |
120 return kind >= FIRST_FIXED_TYPED_ARRAY_ELEMENTS_KIND && | |
121 kind <= LAST_FIXED_TYPED_ARRAY_ELEMENTS_KIND; | |
122 } | |
123 | |
124 | |
125 inline bool IsFastElementsKind(ElementsKind kind) { | 106 inline bool IsFastElementsKind(ElementsKind kind) { |
126 ASSERT(FIRST_FAST_ELEMENTS_KIND == 0); | 107 ASSERT(FIRST_FAST_ELEMENTS_KIND == 0); |
127 return kind <= FAST_HOLEY_DOUBLE_ELEMENTS; | 108 return kind <= FAST_HOLEY_DOUBLE_ELEMENTS; |
128 } | 109 } |
129 | 110 |
130 | 111 |
131 inline bool IsFastDoubleElementsKind(ElementsKind kind) { | 112 inline bool IsFastDoubleElementsKind(ElementsKind kind) { |
132 return kind == FAST_DOUBLE_ELEMENTS || | 113 return kind == FAST_DOUBLE_ELEMENTS || |
133 kind == FAST_HOLEY_DOUBLE_ELEMENTS; | 114 kind == FAST_HOLEY_DOUBLE_ELEMENTS; |
134 } | 115 } |
135 | 116 |
136 | 117 |
137 inline bool IsExternalFloatOrDoubleElementsKind(ElementsKind kind) { | 118 inline bool IsExternalFloatOrDoubleElementsKind(ElementsKind kind) { |
138 return kind == EXTERNAL_DOUBLE_ELEMENTS || | 119 return kind == EXTERNAL_DOUBLE_ELEMENTS || |
139 kind == EXTERNAL_FLOAT_ELEMENTS; | 120 kind == EXTERNAL_FLOAT_ELEMENTS; |
140 } | 121 } |
141 | 122 |
142 | 123 |
143 inline bool IsFixedFloatElementsKind(ElementsKind kind) { | |
144 return kind == FLOAT32_ELEMENTS || kind == FLOAT64_ELEMENTS; | |
145 } | |
146 | |
147 | |
148 inline bool IsDoubleOrFloatElementsKind(ElementsKind kind) { | 124 inline bool IsDoubleOrFloatElementsKind(ElementsKind kind) { |
149 return IsFastDoubleElementsKind(kind) || | 125 return IsFastDoubleElementsKind(kind) || |
150 IsExternalFloatOrDoubleElementsKind(kind) || | 126 IsExternalFloatOrDoubleElementsKind(kind); |
151 IsFixedFloatElementsKind(kind); | |
152 } | 127 } |
153 | 128 |
154 | 129 |
155 inline bool IsFastSmiOrObjectElementsKind(ElementsKind kind) { | 130 inline bool IsFastSmiOrObjectElementsKind(ElementsKind kind) { |
156 return kind == FAST_SMI_ELEMENTS || | 131 return kind == FAST_SMI_ELEMENTS || |
157 kind == FAST_HOLEY_SMI_ELEMENTS || | 132 kind == FAST_HOLEY_SMI_ELEMENTS || |
158 kind == FAST_ELEMENTS || | 133 kind == FAST_ELEMENTS || |
159 kind == FAST_HOLEY_ELEMENTS; | 134 kind == FAST_HOLEY_ELEMENTS; |
160 } | 135 } |
161 | 136 |
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255 bool allow_only_packed) { | 230 bool allow_only_packed) { |
256 return IsFastElementsKind(elements_kind) && | 231 return IsFastElementsKind(elements_kind) && |
257 (elements_kind != TERMINAL_FAST_ELEMENTS_KIND && | 232 (elements_kind != TERMINAL_FAST_ELEMENTS_KIND && |
258 (!allow_only_packed || elements_kind != FAST_ELEMENTS)); | 233 (!allow_only_packed || elements_kind != FAST_ELEMENTS)); |
259 } | 234 } |
260 | 235 |
261 | 236 |
262 } } // namespace v8::internal | 237 } } // namespace v8::internal |
263 | 238 |
264 #endif // V8_ELEMENTS_KIND_H_ | 239 #endif // V8_ELEMENTS_KIND_H_ |
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