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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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| 50 | 50 |
| 51 Address slot_address() const { return slot_address_; } | 51 Address slot_address() const { return slot_address_; } |
| 52 double value() const { return val_; } | 52 double value() const { return val_; } |
| 53 | 53 |
| 54 private: | 54 private: |
| 55 Address slot_address_; | 55 Address slot_address_; |
| 56 double val_; | 56 double val_; |
| 57 }; | 57 }; |
| 58 | 58 |
| 59 | 59 |
| 60 class ArgumentsObjectMaterializationDescriptor BASE_EMBEDDED { | |
| 61 public: | |
| 62 ArgumentsObjectMaterializationDescriptor(Address slot_address, int argc) | |
| 63 : slot_address_(slot_address), arguments_length_(argc) { } | |
| 64 | |
| 65 Address slot_address() const { return slot_address_; } | |
| 66 int arguments_length() const { return arguments_length_; } | |
| 67 | |
| 68 private: | |
| 69 Address slot_address_; | |
| 70 int arguments_length_; | |
| 71 }; | |
| 72 | |
| 73 | |
| 74 class OptimizedFunctionVisitor BASE_EMBEDDED { | 60 class OptimizedFunctionVisitor BASE_EMBEDDED { |
| 75 public: | 61 public: |
| 76 virtual ~OptimizedFunctionVisitor() {} | 62 virtual ~OptimizedFunctionVisitor() {} |
| 77 | 63 |
| 78 // Function which is called before iteration of any optimized functions | 64 // Function which is called before iteration of any optimized functions |
| 79 // from given native context. | 65 // from given native context. |
| 80 virtual void EnterContext(Context* context) = 0; | 66 virtual void EnterContext(Context* context) = 0; |
| 81 | 67 |
| 82 virtual void VisitFunction(JSFunction* function) = 0; | 68 virtual void VisitFunction(JSFunction* function) = 0; |
| 83 | 69 |
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| 203 | 189 |
| 204 // Change all patched stack guard checks in the unoptimized code | 190 // Change all patched stack guard checks in the unoptimized code |
| 205 // back to a normal stack guard check. | 191 // back to a normal stack guard check. |
| 206 static void RevertStackCheckCodeAt(Code* unoptimized_code, | 192 static void RevertStackCheckCodeAt(Code* unoptimized_code, |
| 207 Address pc_after, | 193 Address pc_after, |
| 208 Code* check_code, | 194 Code* check_code, |
| 209 Code* replacement_code); | 195 Code* replacement_code); |
| 210 | 196 |
| 211 ~Deoptimizer(); | 197 ~Deoptimizer(); |
| 212 | 198 |
| 213 void MaterializeHeapObjects(JavaScriptFrameIterator* it); | 199 void MaterializeHeapNumbers(); |
| 214 #ifdef ENABLE_DEBUGGER_SUPPORT | 200 #ifdef ENABLE_DEBUGGER_SUPPORT |
| 215 void MaterializeHeapNumbersForDebuggerInspectableFrame( | 201 void MaterializeHeapNumbersForDebuggerInspectableFrame( |
| 216 Address parameters_top, | 202 Address parameters_top, |
| 217 uint32_t parameters_size, | 203 uint32_t parameters_size, |
| 218 Address expressions_top, | 204 Address expressions_top, |
| 219 uint32_t expressions_size, | 205 uint32_t expressions_size, |
| 220 DeoptimizedFrameInfo* info); | 206 DeoptimizedFrameInfo* info); |
| 221 #endif | 207 #endif |
| 222 | 208 |
| 223 static void ComputeOutputFrames(Deoptimizer* deoptimizer); | 209 static void ComputeOutputFrames(Deoptimizer* deoptimizer); |
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| 312 int* input_offset); | 298 int* input_offset); |
| 313 | 299 |
| 314 unsigned ComputeInputFrameSize() const; | 300 unsigned ComputeInputFrameSize() const; |
| 315 unsigned ComputeFixedSize(JSFunction* function) const; | 301 unsigned ComputeFixedSize(JSFunction* function) const; |
| 316 | 302 |
| 317 unsigned ComputeIncomingArgumentSize(JSFunction* function) const; | 303 unsigned ComputeIncomingArgumentSize(JSFunction* function) const; |
| 318 unsigned ComputeOutgoingArgumentSize() const; | 304 unsigned ComputeOutgoingArgumentSize() const; |
| 319 | 305 |
| 320 Object* ComputeLiteral(int index) const; | 306 Object* ComputeLiteral(int index) const; |
| 321 | 307 |
| 322 void AddArgumentsObject(intptr_t slot_address, int argc); | |
| 323 void AddArgumentsObjectValue(intptr_t value); | |
| 324 void AddDoubleValue(intptr_t slot_address, double value); | 308 void AddDoubleValue(intptr_t slot_address, double value); |
| 325 | 309 |
| 326 static MemoryChunk* CreateCode(BailoutType type); | 310 static MemoryChunk* CreateCode(BailoutType type); |
| 327 static void GenerateDeoptimizationEntries( | 311 static void GenerateDeoptimizationEntries( |
| 328 MacroAssembler* masm, int count, BailoutType type); | 312 MacroAssembler* masm, int count, BailoutType type); |
| 329 | 313 |
| 330 // Weak handle callback for deoptimizing code objects. | 314 // Weak handle callback for deoptimizing code objects. |
| 331 static void HandleWeakDeoptimizedCode( | 315 static void HandleWeakDeoptimizedCode( |
| 332 v8::Persistent<v8::Value> obj, void* data); | 316 v8::Persistent<v8::Value> obj, void* data); |
| 333 static Code* FindDeoptimizingCodeFromAddress(Address addr); | 317 static Code* FindDeoptimizingCodeFromAddress(Address addr); |
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| 349 | 333 |
| 350 // Input frame description. | 334 // Input frame description. |
| 351 FrameDescription* input_; | 335 FrameDescription* input_; |
| 352 // Number of output frames. | 336 // Number of output frames. |
| 353 int output_count_; | 337 int output_count_; |
| 354 // Number of output js frames. | 338 // Number of output js frames. |
| 355 int jsframe_count_; | 339 int jsframe_count_; |
| 356 // Array of output frame descriptions. | 340 // Array of output frame descriptions. |
| 357 FrameDescription** output_; | 341 FrameDescription** output_; |
| 358 | 342 |
| 359 List<Object*> deferred_arguments_objects_values_; | |
| 360 List<ArgumentsObjectMaterializationDescriptor> deferred_arguments_objects_; | |
| 361 List<HeapNumberMaterializationDescriptor> deferred_heap_numbers_; | 343 List<HeapNumberMaterializationDescriptor> deferred_heap_numbers_; |
| 362 | 344 |
| 363 static const int table_entry_size_; | 345 static const int table_entry_size_; |
| 364 | 346 |
| 365 friend class FrameDescription; | 347 friend class FrameDescription; |
| 366 friend class DeoptimizingCodeListNode; | 348 friend class DeoptimizingCodeListNode; |
| 367 friend class DeoptimizedFrameInfo; | 349 friend class DeoptimizedFrameInfo; |
| 368 }; | 350 }; |
| 369 | 351 |
| 370 | 352 |
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| 619 void BeginSetterStubFrame(int literal_id); | 601 void BeginSetterStubFrame(int literal_id); |
| 620 void StoreRegister(Register reg); | 602 void StoreRegister(Register reg); |
| 621 void StoreInt32Register(Register reg); | 603 void StoreInt32Register(Register reg); |
| 622 void StoreUint32Register(Register reg); | 604 void StoreUint32Register(Register reg); |
| 623 void StoreDoubleRegister(DoubleRegister reg); | 605 void StoreDoubleRegister(DoubleRegister reg); |
| 624 void StoreStackSlot(int index); | 606 void StoreStackSlot(int index); |
| 625 void StoreInt32StackSlot(int index); | 607 void StoreInt32StackSlot(int index); |
| 626 void StoreUint32StackSlot(int index); | 608 void StoreUint32StackSlot(int index); |
| 627 void StoreDoubleStackSlot(int index); | 609 void StoreDoubleStackSlot(int index); |
| 628 void StoreLiteral(int literal_id); | 610 void StoreLiteral(int literal_id); |
| 629 void StoreArgumentsObject(int args_index, int args_length); | 611 void StoreArgumentsObject(); |
| 630 void MarkDuplicate(); | 612 void MarkDuplicate(); |
| 631 | 613 |
| 632 Zone* zone() const { return zone_; } | 614 Zone* zone() const { return zone_; } |
| 633 | 615 |
| 634 static int NumberOfOperandsFor(Opcode opcode); | 616 static int NumberOfOperandsFor(Opcode opcode); |
| 635 | 617 |
| 636 #if defined(OBJECT_PRINT) || defined(ENABLE_DISASSEMBLER) | 618 #if defined(OBJECT_PRINT) || defined(ENABLE_DISASSEMBLER) |
| 637 static const char* StringFor(Opcode opcode); | 619 static const char* StringFor(Opcode opcode); |
| 638 #endif | 620 #endif |
| 639 | 621 |
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| 829 Object** expression_stack_; | 811 Object** expression_stack_; |
| 830 int source_position_; | 812 int source_position_; |
| 831 | 813 |
| 832 friend class Deoptimizer; | 814 friend class Deoptimizer; |
| 833 }; | 815 }; |
| 834 #endif | 816 #endif |
| 835 | 817 |
| 836 } } // namespace v8::internal | 818 } } // namespace v8::internal |
| 837 | 819 |
| 838 #endif // V8_DEOPTIMIZER_H_ | 820 #endif // V8_DEOPTIMIZER_H_ |
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