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1 // Copyright 2010 the V8 project authors. All rights reserved. | 1 // Copyright 2011 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 |
11 // with the distribution. | 11 // with the distribution. |
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4252 bool has_only_simple_this_property_assignments, | 4252 bool has_only_simple_this_property_assignments, |
4253 FixedArray* this_property_assignments); | 4253 FixedArray* this_property_assignments); |
4254 | 4254 |
4255 // Clear information on assignments of the form this.x = ...; | 4255 // Clear information on assignments of the form this.x = ...; |
4256 void ClearThisPropertyAssignmentsInfo(); | 4256 void ClearThisPropertyAssignmentsInfo(); |
4257 | 4257 |
4258 // Indicate that this function only consists of assignments of the form | 4258 // Indicate that this function only consists of assignments of the form |
4259 // this.x = y; where y is either a constant or refers to an argument. | 4259 // this.x = y; where y is either a constant or refers to an argument. |
4260 inline bool has_only_simple_this_property_assignments(); | 4260 inline bool has_only_simple_this_property_assignments(); |
4261 | 4261 |
4262 inline bool try_full_codegen(); | |
4263 inline void set_try_full_codegen(bool flag); | |
4264 | |
4265 // Indicates if this function can be lazy compiled. | 4262 // Indicates if this function can be lazy compiled. |
4266 // This is used to determine if we can safely flush code from a function | 4263 // This is used to determine if we can safely flush code from a function |
4267 // when doing GC if we expect that the function will no longer be used. | 4264 // when doing GC if we expect that the function will no longer be used. |
4268 inline bool allows_lazy_compilation(); | 4265 inline bool allows_lazy_compilation(); |
4269 inline void set_allows_lazy_compilation(bool flag); | 4266 inline void set_allows_lazy_compilation(bool flag); |
4270 | 4267 |
4271 // Indicates how many full GCs this function has survived with assigned | 4268 // Indicates how many full GCs this function has survived with assigned |
4272 // code object. Used to determine when it is relatively safe to flush | 4269 // code object. Used to determine when it is relatively safe to flush |
4273 // this code object and replace it with lazy compilation stub. | 4270 // this code object and replace it with lazy compilation stub. |
4274 // Age is reset when GC notices that the code object is referenced | 4271 // Age is reset when GC notices that the code object is referenced |
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4454 // Bit positions in start_position_and_type. | 4451 // Bit positions in start_position_and_type. |
4455 // The source code start position is in the 30 most significant bits of | 4452 // The source code start position is in the 30 most significant bits of |
4456 // the start_position_and_type field. | 4453 // the start_position_and_type field. |
4457 static const int kIsExpressionBit = 0; | 4454 static const int kIsExpressionBit = 0; |
4458 static const int kIsTopLevelBit = 1; | 4455 static const int kIsTopLevelBit = 1; |
4459 static const int kStartPositionShift = 2; | 4456 static const int kStartPositionShift = 2; |
4460 static const int kStartPositionMask = ~((1 << kStartPositionShift) - 1); | 4457 static const int kStartPositionMask = ~((1 << kStartPositionShift) - 1); |
4461 | 4458 |
4462 // Bit positions in compiler_hints. | 4459 // Bit positions in compiler_hints. |
4463 static const int kHasOnlySimpleThisPropertyAssignments = 0; | 4460 static const int kHasOnlySimpleThisPropertyAssignments = 0; |
4464 static const int kTryFullCodegen = 1; | 4461 static const int kAllowLazyCompilation = 1; |
4465 static const int kAllowLazyCompilation = 2; | 4462 static const int kLiveObjectsMayExist = 2; |
4466 static const int kLiveObjectsMayExist = 3; | 4463 static const int kCodeAgeShift = 3; |
4467 static const int kCodeAgeShift = 4; | |
4468 static const int kCodeAgeMask = 0x7; | 4464 static const int kCodeAgeMask = 0x7; |
4469 static const int kOptimizationDisabled = 7; | 4465 static const int kOptimizationDisabled = 6; |
4470 static const int kStrictModeFunction = 8; | 4466 static const int kStrictModeFunction = 7; |
4471 | 4467 |
4472 private: | 4468 private: |
4473 #if V8_HOST_ARCH_32_BIT | 4469 #if V8_HOST_ARCH_32_BIT |
4474 // On 32 bit platforms, compiler hints is a smi. | 4470 // On 32 bit platforms, compiler hints is a smi. |
4475 static const int kCompilerHintsSmiTagSize = kSmiTagSize; | 4471 static const int kCompilerHintsSmiTagSize = kSmiTagSize; |
4476 static const int kCompilerHintsSize = kPointerSize; | 4472 static const int kCompilerHintsSize = kPointerSize; |
4477 #else | 4473 #else |
4478 // On 64 bit platforms, compiler hints is not a smi, see comment above. | 4474 // On 64 bit platforms, compiler hints is not a smi, see comment above. |
4479 static const int kCompilerHintsSmiTagSize = 0; | 4475 static const int kCompilerHintsSmiTagSize = 0; |
4480 static const int kCompilerHintsSize = kIntSize; | 4476 static const int kCompilerHintsSize = kIntSize; |
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6657 } else { | 6653 } else { |
6658 value &= ~(1 << bit_position); | 6654 value &= ~(1 << bit_position); |
6659 } | 6655 } |
6660 return value; | 6656 return value; |
6661 } | 6657 } |
6662 }; | 6658 }; |
6663 | 6659 |
6664 } } // namespace v8::internal | 6660 } } // namespace v8::internal |
6665 | 6661 |
6666 #endif // V8_OBJECTS_H_ | 6662 #endif // V8_OBJECTS_H_ |
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