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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_DEOPTIMIZER_H_ | 5 #ifndef V8_DEOPTIMIZER_H_ |
6 #define V8_DEOPTIMIZER_H_ | 6 #define V8_DEOPTIMIZER_H_ |
7 | 7 |
8 #include "src/v8.h" | 8 #include "src/v8.h" |
9 | 9 |
10 #include "src/allocation.h" | 10 #include "src/allocation.h" |
11 #include "src/macro-assembler.h" | 11 #include "src/macro-assembler.h" |
12 | 12 |
13 | 13 |
14 namespace v8 { | 14 namespace v8 { |
15 namespace internal { | 15 namespace internal { |
16 | 16 |
17 class FrameDescription; | 17 class FrameDescription; |
18 class TranslationIterator; | 18 class TranslationIterator; |
19 class DeoptimizedFrameInfo; | 19 class DeoptimizedFrameInfo; |
20 class TranslatedState; | 20 class TranslatedState; |
21 class RegisterValues; | 21 class RegisterValues; |
22 | 22 |
23 class TranslatedValue BASE_EMBEDDED { | 23 class TranslatedValue { |
24 public: | 24 public: |
25 // Allocation-less getter of the value. | 25 // Allocation-less getter of the value. |
26 // Returns heap()->arguments_marker() if allocation would be | 26 // Returns heap()->arguments_marker() if allocation would be |
27 // necessary to get the value. | 27 // necessary to get the value. |
28 Object* GetRawValue() const; | 28 Object* GetRawValue() const; |
29 Handle<Object> GetValue(); | 29 Handle<Object> GetValue(); |
30 | 30 |
31 bool IsMaterializedObject() const; | 31 bool IsMaterializedObject() const; |
32 | 32 |
33 private: | 33 private: |
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287 Address stack_frame_pointer_; | 287 Address stack_frame_pointer_; |
288 bool has_adapted_arguments_; | 288 bool has_adapted_arguments_; |
289 | 289 |
290 struct ObjectPosition { | 290 struct ObjectPosition { |
291 int frame_index_; | 291 int frame_index_; |
292 int value_index_; | 292 int value_index_; |
293 }; | 293 }; |
294 std::deque<ObjectPosition> object_positions_; | 294 std::deque<ObjectPosition> object_positions_; |
295 }; | 295 }; |
296 | 296 |
297 template<typename T> | |
298 class HeapNumberMaterializationDescriptor BASE_EMBEDDED { | |
299 public: | |
300 HeapNumberMaterializationDescriptor(T destination, double value) | |
301 : destination_(destination), value_(value) { } | |
302 | |
303 T destination() const { return destination_; } | |
304 double value() const { return value_; } | |
305 | |
306 private: | |
307 T destination_; | |
308 double value_; | |
309 }; | |
310 | |
311 | |
312 class ObjectMaterializationDescriptor BASE_EMBEDDED { | |
313 public: | |
314 ObjectMaterializationDescriptor( | |
315 Address slot_address, int frame, int length, int duplicate, bool is_args) | |
316 : slot_address_(slot_address), | |
317 jsframe_index_(frame), | |
318 object_length_(length), | |
319 duplicate_object_(duplicate), | |
320 is_arguments_(is_args) { } | |
321 | |
322 Address slot_address() const { return slot_address_; } | |
323 int jsframe_index() const { return jsframe_index_; } | |
324 int object_length() const { return object_length_; } | |
325 int duplicate_object() const { return duplicate_object_; } | |
326 bool is_arguments() const { return is_arguments_; } | |
327 | |
328 // Only used for allocated receivers in DoComputeConstructStubFrame. | |
329 void patch_slot_address(intptr_t slot) { | |
330 slot_address_ = reinterpret_cast<Address>(slot); | |
331 } | |
332 | |
333 private: | |
334 Address slot_address_; | |
335 int jsframe_index_; | |
336 int object_length_; | |
337 int duplicate_object_; | |
338 bool is_arguments_; | |
339 }; | |
340 | |
341 | 297 |
342 class OptimizedFunctionVisitor BASE_EMBEDDED { | 298 class OptimizedFunctionVisitor BASE_EMBEDDED { |
343 public: | 299 public: |
344 virtual ~OptimizedFunctionVisitor() {} | 300 virtual ~OptimizedFunctionVisitor() {} |
345 | 301 |
346 // Function which is called before iteration of any optimized functions | 302 // Function which is called before iteration of any optimized functions |
347 // from given native context. | 303 // from given native context. |
348 virtual void EnterContext(Context* context) = 0; | 304 virtual void EnterContext(Context* context) = 0; |
349 | 305 |
350 virtual void VisitFunction(JSFunction* function) = 0; | 306 virtual void VisitFunction(JSFunction* function) = 0; |
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1185 Object** expression_stack_; | 1141 Object** expression_stack_; |
1186 int source_position_; | 1142 int source_position_; |
1187 | 1143 |
1188 friend class Deoptimizer; | 1144 friend class Deoptimizer; |
1189 }; | 1145 }; |
1190 | 1146 |
1191 } // namespace internal | 1147 } // namespace internal |
1192 } // namespace v8 | 1148 } // namespace v8 |
1193 | 1149 |
1194 #endif // V8_DEOPTIMIZER_H_ | 1150 #endif // V8_DEOPTIMIZER_H_ |
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