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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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4492 // [safepoint_table_start]: For kind OPTIMIZED_CODE, the offset in | 4492 // [safepoint_table_start]: For kind OPTIMIZED_CODE, the offset in |
4493 // the instruction stream where the safepoint table starts. | 4493 // the instruction stream where the safepoint table starts. |
4494 inline unsigned safepoint_table_offset(); | 4494 inline unsigned safepoint_table_offset(); |
4495 inline void set_safepoint_table_offset(unsigned offset); | 4495 inline void set_safepoint_table_offset(unsigned offset); |
4496 | 4496 |
4497 // [stack_check_table_start]: For kind FUNCTION, the offset in the | 4497 // [stack_check_table_start]: For kind FUNCTION, the offset in the |
4498 // instruction stream where the stack check table starts. | 4498 // instruction stream where the stack check table starts. |
4499 inline unsigned stack_check_table_offset(); | 4499 inline unsigned stack_check_table_offset(); |
4500 inline void set_stack_check_table_offset(unsigned offset); | 4500 inline void set_stack_check_table_offset(unsigned offset); |
4501 | 4501 |
| 4502 inline bool stack_check_patched_for_osr(); |
| 4503 inline void set_stack_check_patched_for_osr(bool value); |
| 4504 |
4502 // [check type]: For kind CALL_IC, tells how to check if the | 4505 // [check type]: For kind CALL_IC, tells how to check if the |
4503 // receiver is valid for the given call. | 4506 // receiver is valid for the given call. |
4504 inline CheckType check_type(); | 4507 inline CheckType check_type(); |
4505 inline void set_check_type(CheckType value); | 4508 inline void set_check_type(CheckType value); |
4506 | 4509 |
4507 // [type-recording unary op type]: For kind UNARY_OP_IC. | 4510 // [type-recording unary op type]: For kind UNARY_OP_IC. |
4508 inline byte unary_op_type(); | 4511 inline byte unary_op_type(); |
4509 inline void set_unary_op_type(byte value); | 4512 inline void set_unary_op_type(byte value); |
4510 | 4513 |
4511 // [to_boolean_foo]: For kind TO_BOOLEAN_IC tells what state the stub is in. | 4514 // [to_boolean_foo]: For kind TO_BOOLEAN_IC tells what state the stub is in. |
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4769 kSafepointTableOffsetBitCount <= 32); | 4772 kSafepointTableOffsetBitCount <= 32); |
4770 | 4773 |
4771 class SafepointTableOffsetField: public BitField<int, | 4774 class SafepointTableOffsetField: public BitField<int, |
4772 kSafepointTableOffsetFirstBit, | 4775 kSafepointTableOffsetFirstBit, |
4773 kSafepointTableOffsetBitCount> {}; // NOLINT | 4776 kSafepointTableOffsetBitCount> {}; // NOLINT |
4774 class StubMajorKeyField: public BitField<int, | 4777 class StubMajorKeyField: public BitField<int, |
4775 kStubMajorKeyFirstBit, kStubMajorKeyBits> {}; // NOLINT | 4778 kStubMajorKeyFirstBit, kStubMajorKeyBits> {}; // NOLINT |
4776 | 4779 |
4777 // KindSpecificFlags2 layout (FUNCTION) | 4780 // KindSpecificFlags2 layout (FUNCTION) |
4778 class StackCheckTableOffsetField: public BitField<int, 0, 31> {}; | 4781 class StackCheckTableOffsetField: public BitField<int, 0, 31> {}; |
| 4782 class StackCheckPatchedForOSRField: public BitField<bool, 31, 1> {}; |
4779 | 4783 |
4780 // Signed field cannot be encoded using the BitField class. | 4784 // Signed field cannot be encoded using the BitField class. |
4781 static const int kArgumentsCountShift = 17; | 4785 static const int kArgumentsCountShift = 17; |
4782 static const int kArgumentsCountMask = ~((1 << kArgumentsCountShift) - 1); | 4786 static const int kArgumentsCountMask = ~((1 << kArgumentsCountShift) - 1); |
4783 | 4787 |
4784 // This constant should be encodable in an ARM instruction. | 4788 // This constant should be encodable in an ARM instruction. |
4785 static const int kFlagsNotUsedInLookup = | 4789 static const int kFlagsNotUsedInLookup = |
4786 TypeField::kMask | CacheHolderField::kMask; | 4790 TypeField::kMask | CacheHolderField::kMask; |
4787 | 4791 |
4788 private: | 4792 private: |
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6131 | 6135 |
6132 static const int kAlignedSize = POINTER_SIZE_ALIGN(kSize); | 6136 static const int kAlignedSize = POINTER_SIZE_ALIGN(kSize); |
6133 | 6137 |
6134 typedef FixedBodyDescriptor<kNameOffset, | 6138 typedef FixedBodyDescriptor<kNameOffset, |
6135 kThisPropertyAssignmentsOffset + kPointerSize, | 6139 kThisPropertyAssignmentsOffset + kPointerSize, |
6136 kSize> BodyDescriptor; | 6140 kSize> BodyDescriptor; |
6137 | 6141 |
6138 // Bit positions in start_position_and_type. | 6142 // Bit positions in start_position_and_type. |
6139 // The source code start position is in the 30 most significant bits of | 6143 // The source code start position is in the 30 most significant bits of |
6140 // the start_position_and_type field. | 6144 // the start_position_and_type field. |
6141 static const int kIsExpressionBit = 0; | 6145 static const int kIsExpressionBit = 0; |
6142 static const int kIsTopLevelBit = 1; | 6146 static const int kIsTopLevelBit = 1; |
6143 static const int kStartPositionShift = 2; | 6147 static const int kStartPositionShift = 2; |
6144 static const int kStartPositionMask = ~((1 << kStartPositionShift) - 1); | 6148 static const int kStartPositionMask = ~((1 << kStartPositionShift) - 1); |
6145 | 6149 |
6146 // Bit positions in compiler_hints. | 6150 // Bit positions in compiler_hints. |
6147 static const int kCodeAgeSize = 3; | 6151 static const int kCodeAgeSize = 3; |
6148 static const int kCodeAgeMask = (1 << kCodeAgeSize) - 1; | 6152 static const int kCodeAgeMask = (1 << kCodeAgeSize) - 1; |
6149 | 6153 |
6150 enum CompilerHints { | 6154 enum CompilerHints { |
6151 kHasOnlySimpleThisPropertyAssignments, | 6155 kHasOnlySimpleThisPropertyAssignments, |
6152 kAllowLazyCompilation, | 6156 kAllowLazyCompilation, |
6153 kAllowLazyCompilationWithoutContext, | 6157 kAllowLazyCompilationWithoutContext, |
6154 kLiveObjectsMayExist, | 6158 kLiveObjectsMayExist, |
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6268 inline Context* context(); | 6272 inline Context* context(); |
6269 inline Object* unchecked_context(); | 6273 inline Object* unchecked_context(); |
6270 inline void set_context(Object* context); | 6274 inline void set_context(Object* context); |
6271 | 6275 |
6272 // [code]: The generated code object for this function. Executed | 6276 // [code]: The generated code object for this function. Executed |
6273 // when the function is invoked, e.g. foo() or new foo(). See | 6277 // when the function is invoked, e.g. foo() or new foo(). See |
6274 // [[Call]] and [[Construct]] description in ECMA-262, section | 6278 // [[Call]] and [[Construct]] description in ECMA-262, section |
6275 // 8.6.2, page 27. | 6279 // 8.6.2, page 27. |
6276 inline Code* code(); | 6280 inline Code* code(); |
6277 inline void set_code(Code* code); | 6281 inline void set_code(Code* code); |
| 6282 inline void set_code_no_write_barrier(Code* code); |
6278 inline void ReplaceCode(Code* code); | 6283 inline void ReplaceCode(Code* code); |
6279 | 6284 |
6280 inline Code* unchecked_code(); | 6285 inline Code* unchecked_code(); |
6281 | 6286 |
6282 // Tells whether this function is builtin. | 6287 // Tells whether this function is builtin. |
6283 inline bool IsBuiltin(); | 6288 inline bool IsBuiltin(); |
6284 | 6289 |
6285 // Tells whether or not the function needs arguments adaption. | 6290 // Tells whether or not the function needs arguments adaption. |
6286 inline bool NeedsArgumentsAdaption(); | 6291 inline bool NeedsArgumentsAdaption(); |
6287 | 6292 |
6288 // Tells whether or not this function has been optimized. | 6293 // Tells whether or not this function has been optimized. |
6289 inline bool IsOptimized(); | 6294 inline bool IsOptimized(); |
6290 | 6295 |
6291 // Tells whether or not this function can be optimized. | 6296 // Tells whether or not this function can be optimized. |
6292 inline bool IsOptimizable(); | 6297 inline bool IsOptimizable(); |
6293 | 6298 |
6294 // Mark this function for lazy recompilation. The function will be | 6299 // Mark this function for lazy recompilation. The function will be |
6295 // recompiled the next time it is executed. | 6300 // recompiled the next time it is executed. |
6296 void MarkForLazyRecompilation(); | 6301 void MarkForLazyRecompilation(); |
6297 void MarkForParallelRecompilation(); | 6302 void MarkForParallelRecompilation(); |
| 6303 void MarkForInstallingRecompiledCode(); |
| 6304 void MarkInRecompileQueue(); |
6298 | 6305 |
6299 // Helpers to compile this function. Returns true on success, false on | 6306 // Helpers to compile this function. Returns true on success, false on |
6300 // failure (e.g., stack overflow during compilation). | 6307 // failure (e.g., stack overflow during compilation). |
6301 static bool EnsureCompiled(Handle<JSFunction> function, | 6308 static bool EnsureCompiled(Handle<JSFunction> function, |
6302 ClearExceptionFlag flag); | 6309 ClearExceptionFlag flag); |
6303 static bool CompileLazy(Handle<JSFunction> function, | 6310 static bool CompileLazy(Handle<JSFunction> function, |
6304 ClearExceptionFlag flag); | 6311 ClearExceptionFlag flag); |
6305 static bool CompileOptimized(Handle<JSFunction> function, | 6312 static bool CompileOptimized(Handle<JSFunction> function, |
6306 BailoutId osr_ast_id, | 6313 BailoutId osr_ast_id, |
6307 ClearExceptionFlag flag); | 6314 ClearExceptionFlag flag); |
6308 | 6315 |
6309 // Tells whether or not the function is already marked for lazy | 6316 // Tells whether or not the function is already marked for lazy |
6310 // recompilation. | 6317 // recompilation. |
6311 inline bool IsMarkedForLazyRecompilation(); | 6318 inline bool IsMarkedForLazyRecompilation(); |
6312 inline bool IsMarkedForParallelRecompilation(); | 6319 inline bool IsMarkedForParallelRecompilation(); |
| 6320 inline bool IsMarkedForInstallingRecompiledCode(); |
6313 | 6321 |
6314 // Tells whether or not the function is on the parallel | 6322 // Tells whether or not the function is on the parallel |
6315 // recompilation queue. | 6323 // recompilation queue. |
6316 inline bool IsInRecompileQueue(); | 6324 inline bool IsInRecompileQueue(); |
6317 | 6325 |
6318 // Check whether or not this function is inlineable. | 6326 // Check whether or not this function is inlineable. |
6319 bool IsInlineable(); | 6327 bool IsInlineable(); |
6320 | 6328 |
6321 // [literals_or_bindings]: Fixed array holding either | 6329 // [literals_or_bindings]: Fixed array holding either |
6322 // the materialized literals or the bindings of a bound function. | 6330 // the materialized literals or the bindings of a bound function. |
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9256 } else { | 9264 } else { |
9257 value &= ~(1 << bit_position); | 9265 value &= ~(1 << bit_position); |
9258 } | 9266 } |
9259 return value; | 9267 return value; |
9260 } | 9268 } |
9261 }; | 9269 }; |
9262 | 9270 |
9263 } } // namespace v8::internal | 9271 } } // namespace v8::internal |
9264 | 9272 |
9265 #endif // V8_OBJECTS_H_ | 9273 #endif // V8_OBJECTS_H_ |
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