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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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222 | 222 |
223 inline bool CanTransitionToMoreGeneralFastElementsKind( | 223 inline bool CanTransitionToMoreGeneralFastElementsKind( |
224 ElementsKind elements_kind, | 224 ElementsKind elements_kind, |
225 bool allow_only_packed) { | 225 bool allow_only_packed) { |
226 return IsFastElementsKind(elements_kind) && | 226 return IsFastElementsKind(elements_kind) && |
227 (elements_kind != TERMINAL_FAST_ELEMENTS_KIND && | 227 (elements_kind != TERMINAL_FAST_ELEMENTS_KIND && |
228 (!allow_only_packed || elements_kind != FAST_ELEMENTS)); | 228 (!allow_only_packed || elements_kind != FAST_ELEMENTS)); |
229 } | 229 } |
230 | 230 |
231 | 231 |
232 inline bool DoesTransitionChangeElementsBufferFormat(ElementsKind from_kind, | |
233 ElementsKind to_kind) { | |
234 return (IsFastSmiElementsKind(from_kind) && | |
235 IsFastDoubleElementsKind(to_kind)) || | |
236 (IsFastDoubleElementsKind(from_kind) && | |
237 IsFastObjectElementsKind(to_kind)); | |
238 } | |
239 | |
240 | |
241 } } // namespace v8::internal | 232 } } // namespace v8::internal |
242 | 233 |
243 #endif // V8_ELEMENTS_KIND_H_ | 234 #endif // V8_ELEMENTS_KIND_H_ |
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