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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 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef V8_ELEMENTS_KIND_H_ | 5 #ifndef V8_ELEMENTS_KIND_H_ |
6 #define V8_ELEMENTS_KIND_H_ | 6 #define V8_ELEMENTS_KIND_H_ |
7 | 7 |
8 #include "src/base/macros.h" | 8 #include "src/base/macros.h" |
9 #include "src/checks.h" | 9 #include "src/checks.h" |
10 | 10 |
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26 // The "fast" kind for unwrapped, non-tagged double values. | 26 // The "fast" kind for unwrapped, non-tagged double values. |
27 FAST_DOUBLE_ELEMENTS, | 27 FAST_DOUBLE_ELEMENTS, |
28 FAST_HOLEY_DOUBLE_ELEMENTS, | 28 FAST_HOLEY_DOUBLE_ELEMENTS, |
29 | 29 |
30 // The "slow" kind. | 30 // The "slow" kind. |
31 DICTIONARY_ELEMENTS, | 31 DICTIONARY_ELEMENTS, |
32 | 32 |
33 FAST_SLOPPY_ARGUMENTS_ELEMENTS, | 33 FAST_SLOPPY_ARGUMENTS_ELEMENTS, |
34 SLOW_SLOPPY_ARGUMENTS_ELEMENTS, | 34 SLOW_SLOPPY_ARGUMENTS_ELEMENTS, |
35 | 35 |
| 36 // The "fast" kind for external arrays |
| 37 EXTERNAL_INT8_ELEMENTS, |
| 38 EXTERNAL_UINT8_ELEMENTS, |
| 39 EXTERNAL_INT16_ELEMENTS, |
| 40 EXTERNAL_UINT16_ELEMENTS, |
| 41 EXTERNAL_INT32_ELEMENTS, |
| 42 EXTERNAL_UINT32_ELEMENTS, |
| 43 EXTERNAL_FLOAT32_ELEMENTS, |
| 44 EXTERNAL_FLOAT64_ELEMENTS, |
| 45 EXTERNAL_UINT8_CLAMPED_ELEMENTS, |
| 46 |
36 // Fixed typed arrays | 47 // Fixed typed arrays |
37 UINT8_ELEMENTS, | 48 UINT8_ELEMENTS, |
38 INT8_ELEMENTS, | 49 INT8_ELEMENTS, |
39 UINT16_ELEMENTS, | 50 UINT16_ELEMENTS, |
40 INT16_ELEMENTS, | 51 INT16_ELEMENTS, |
41 UINT32_ELEMENTS, | 52 UINT32_ELEMENTS, |
42 INT32_ELEMENTS, | 53 INT32_ELEMENTS, |
43 FLOAT32_ELEMENTS, | 54 FLOAT32_ELEMENTS, |
44 FLOAT64_ELEMENTS, | 55 FLOAT64_ELEMENTS, |
45 UINT8_CLAMPED_ELEMENTS, | 56 UINT8_CLAMPED_ELEMENTS, |
46 | 57 |
47 // Derived constants from ElementsKind | 58 // Derived constants from ElementsKind |
48 FIRST_ELEMENTS_KIND = FAST_SMI_ELEMENTS, | 59 FIRST_ELEMENTS_KIND = FAST_SMI_ELEMENTS, |
49 LAST_ELEMENTS_KIND = UINT8_CLAMPED_ELEMENTS, | 60 LAST_ELEMENTS_KIND = UINT8_CLAMPED_ELEMENTS, |
50 FIRST_FAST_ELEMENTS_KIND = FAST_SMI_ELEMENTS, | 61 FIRST_FAST_ELEMENTS_KIND = FAST_SMI_ELEMENTS, |
51 LAST_FAST_ELEMENTS_KIND = FAST_HOLEY_DOUBLE_ELEMENTS, | 62 LAST_FAST_ELEMENTS_KIND = FAST_HOLEY_DOUBLE_ELEMENTS, |
| 63 FIRST_EXTERNAL_ARRAY_ELEMENTS_KIND = EXTERNAL_INT8_ELEMENTS, |
| 64 LAST_EXTERNAL_ARRAY_ELEMENTS_KIND = EXTERNAL_UINT8_CLAMPED_ELEMENTS, |
52 FIRST_FIXED_TYPED_ARRAY_ELEMENTS_KIND = UINT8_ELEMENTS, | 65 FIRST_FIXED_TYPED_ARRAY_ELEMENTS_KIND = UINT8_ELEMENTS, |
53 LAST_FIXED_TYPED_ARRAY_ELEMENTS_KIND = UINT8_CLAMPED_ELEMENTS, | 66 LAST_FIXED_TYPED_ARRAY_ELEMENTS_KIND = UINT8_CLAMPED_ELEMENTS, |
54 TERMINAL_FAST_ELEMENTS_KIND = FAST_HOLEY_ELEMENTS | 67 TERMINAL_FAST_ELEMENTS_KIND = FAST_HOLEY_ELEMENTS |
55 }; | 68 }; |
56 | 69 |
57 const int kElementsKindCount = LAST_ELEMENTS_KIND - FIRST_ELEMENTS_KIND + 1; | 70 const int kElementsKindCount = LAST_ELEMENTS_KIND - FIRST_ELEMENTS_KIND + 1; |
58 const int kFastElementsKindCount = LAST_FAST_ELEMENTS_KIND - | 71 const int kFastElementsKindCount = LAST_FAST_ELEMENTS_KIND - |
59 FIRST_FAST_ELEMENTS_KIND + 1; | 72 FIRST_FAST_ELEMENTS_KIND + 1; |
60 | 73 |
61 // The number to add to a packed elements kind to reach a holey elements kind | 74 // The number to add to a packed elements kind to reach a holey elements kind |
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77 return kind == DICTIONARY_ELEMENTS; | 90 return kind == DICTIONARY_ELEMENTS; |
78 } | 91 } |
79 | 92 |
80 | 93 |
81 inline bool IsSloppyArgumentsElements(ElementsKind kind) { | 94 inline bool IsSloppyArgumentsElements(ElementsKind kind) { |
82 return kind == FAST_SLOPPY_ARGUMENTS_ELEMENTS || | 95 return kind == FAST_SLOPPY_ARGUMENTS_ELEMENTS || |
83 kind == SLOW_SLOPPY_ARGUMENTS_ELEMENTS; | 96 kind == SLOW_SLOPPY_ARGUMENTS_ELEMENTS; |
84 } | 97 } |
85 | 98 |
86 | 99 |
| 100 inline bool IsExternalArrayElementsKind(ElementsKind kind) { |
| 101 return kind >= FIRST_EXTERNAL_ARRAY_ELEMENTS_KIND && |
| 102 kind <= LAST_EXTERNAL_ARRAY_ELEMENTS_KIND; |
| 103 } |
| 104 |
| 105 |
| 106 inline bool IsTerminalElementsKind(ElementsKind kind) { |
| 107 return kind == TERMINAL_FAST_ELEMENTS_KIND || |
| 108 IsExternalArrayElementsKind(kind); |
| 109 } |
| 110 |
| 111 |
87 inline bool IsFixedTypedArrayElementsKind(ElementsKind kind) { | 112 inline bool IsFixedTypedArrayElementsKind(ElementsKind kind) { |
88 return kind >= FIRST_FIXED_TYPED_ARRAY_ELEMENTS_KIND && | 113 return kind >= FIRST_FIXED_TYPED_ARRAY_ELEMENTS_KIND && |
89 kind <= LAST_FIXED_TYPED_ARRAY_ELEMENTS_KIND; | 114 kind <= LAST_FIXED_TYPED_ARRAY_ELEMENTS_KIND; |
90 } | 115 } |
91 | 116 |
92 | 117 |
93 inline bool IsTerminalElementsKind(ElementsKind kind) { | |
94 return kind == TERMINAL_FAST_ELEMENTS_KIND || | |
95 IsFixedTypedArrayElementsKind(kind); | |
96 } | |
97 | |
98 | |
99 inline bool IsFastElementsKind(ElementsKind kind) { | 118 inline bool IsFastElementsKind(ElementsKind kind) { |
100 STATIC_ASSERT(FIRST_FAST_ELEMENTS_KIND == 0); | 119 STATIC_ASSERT(FIRST_FAST_ELEMENTS_KIND == 0); |
101 return kind <= FAST_HOLEY_DOUBLE_ELEMENTS; | 120 return kind <= FAST_HOLEY_DOUBLE_ELEMENTS; |
102 } | 121 } |
103 | 122 |
104 | 123 |
105 inline bool IsTransitionElementsKind(ElementsKind kind) { | 124 inline bool IsTransitionElementsKind(ElementsKind kind) { |
106 return IsFastElementsKind(kind) || IsFixedTypedArrayElementsKind(kind) || | 125 return IsFastElementsKind(kind) || IsFixedTypedArrayElementsKind(kind) || |
107 kind == FAST_SLOPPY_ARGUMENTS_ELEMENTS; | 126 kind == FAST_SLOPPY_ARGUMENTS_ELEMENTS; |
108 } | 127 } |
109 | 128 |
110 | 129 |
111 inline bool IsFastDoubleElementsKind(ElementsKind kind) { | 130 inline bool IsFastDoubleElementsKind(ElementsKind kind) { |
112 return kind == FAST_DOUBLE_ELEMENTS || | 131 return kind == FAST_DOUBLE_ELEMENTS || |
113 kind == FAST_HOLEY_DOUBLE_ELEMENTS; | 132 kind == FAST_HOLEY_DOUBLE_ELEMENTS; |
114 } | 133 } |
115 | 134 |
116 | 135 |
| 136 inline bool IsExternalFloatOrDoubleElementsKind(ElementsKind kind) { |
| 137 return kind == EXTERNAL_FLOAT64_ELEMENTS || |
| 138 kind == EXTERNAL_FLOAT32_ELEMENTS; |
| 139 } |
| 140 |
| 141 |
117 inline bool IsFixedFloatElementsKind(ElementsKind kind) { | 142 inline bool IsFixedFloatElementsKind(ElementsKind kind) { |
118 return kind == FLOAT32_ELEMENTS || kind == FLOAT64_ELEMENTS; | 143 return kind == FLOAT32_ELEMENTS || kind == FLOAT64_ELEMENTS; |
119 } | 144 } |
120 | 145 |
121 | 146 |
122 inline bool IsDoubleOrFloatElementsKind(ElementsKind kind) { | 147 inline bool IsDoubleOrFloatElementsKind(ElementsKind kind) { |
123 return IsFastDoubleElementsKind(kind) || IsFixedFloatElementsKind(kind); | 148 return IsFastDoubleElementsKind(kind) || |
| 149 IsExternalFloatOrDoubleElementsKind(kind) || |
| 150 IsFixedFloatElementsKind(kind); |
124 } | 151 } |
125 | 152 |
126 | 153 |
127 inline bool IsFastSmiOrObjectElementsKind(ElementsKind kind) { | 154 inline bool IsFastSmiOrObjectElementsKind(ElementsKind kind) { |
128 return kind == FAST_SMI_ELEMENTS || | 155 return kind == FAST_SMI_ELEMENTS || |
129 kind == FAST_HOLEY_SMI_ELEMENTS || | 156 kind == FAST_HOLEY_SMI_ELEMENTS || |
130 kind == FAST_ELEMENTS || | 157 kind == FAST_ELEMENTS || |
131 kind == FAST_HOLEY_ELEMENTS; | 158 kind == FAST_HOLEY_ELEMENTS; |
132 } | 159 } |
133 | 160 |
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214 | 241 |
215 inline bool IsTransitionableFastElementsKind(ElementsKind from_kind) { | 242 inline bool IsTransitionableFastElementsKind(ElementsKind from_kind) { |
216 return IsFastElementsKind(from_kind) && | 243 return IsFastElementsKind(from_kind) && |
217 from_kind != TERMINAL_FAST_ELEMENTS_KIND; | 244 from_kind != TERMINAL_FAST_ELEMENTS_KIND; |
218 } | 245 } |
219 | 246 |
220 | 247 |
221 } } // namespace v8::internal | 248 } } // namespace v8::internal |
222 | 249 |
223 #endif // V8_ELEMENTS_KIND_H_ | 250 #endif // V8_ELEMENTS_KIND_H_ |
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