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1 // Copyright 2011 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 |
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39 | 39 |
40 | 40 |
41 // The stub cache is used for megamorphic calls and property accesses. | 41 // The stub cache is used for megamorphic calls and property accesses. |
42 // It maps (map, name, type)->Code* | 42 // It maps (map, name, type)->Code* |
43 | 43 |
44 // The design of the table uses the inline cache stubs used for | 44 // The design of the table uses the inline cache stubs used for |
45 // mono-morphic calls. The beauty of this, we do not have to | 45 // mono-morphic calls. The beauty of this, we do not have to |
46 // invalidate the cache whenever a prototype map is changed. The stub | 46 // invalidate the cache whenever a prototype map is changed. The stub |
47 // validates the map chain as in the mono-morphic case. | 47 // validates the map chain as in the mono-morphic case. |
48 | 48 |
| 49 class SmallMapList; |
49 class StubCache; | 50 class StubCache; |
50 | 51 |
| 52 |
51 class SCTableReference { | 53 class SCTableReference { |
52 public: | 54 public: |
53 Address address() const { return address_; } | 55 Address address() const { return address_; } |
54 | 56 |
55 private: | 57 private: |
56 explicit SCTableReference(Address address) : address_(address) {} | 58 explicit SCTableReference(Address address) : address_(address) {} |
57 | 59 |
58 Address address_; | 60 Address address_; |
59 | 61 |
60 friend class StubCache; | 62 friend class StubCache; |
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287 Code::Kind kind); | 289 Code::Kind kind); |
288 #endif | 290 #endif |
289 | 291 |
290 // Update cache for entry hash(name, map). | 292 // Update cache for entry hash(name, map). |
291 Code* Set(String* name, Map* map, Code* code); | 293 Code* Set(String* name, Map* map, Code* code); |
292 | 294 |
293 // Clear the lookup table (@ mark compact collection). | 295 // Clear the lookup table (@ mark compact collection). |
294 void Clear(); | 296 void Clear(); |
295 | 297 |
296 // Collect all maps that match the name and flags. | 298 // Collect all maps that match the name and flags. |
297 void CollectMatchingMaps(ZoneMapList* types, | 299 void CollectMatchingMaps(SmallMapList* types, |
298 String* name, | 300 String* name, |
299 Code::Flags flags); | 301 Code::Flags flags); |
300 | 302 |
301 // Generate code for probing the stub cache table. | 303 // Generate code for probing the stub cache table. |
302 // Arguments extra and extra2 may be used to pass additional scratch | 304 // Arguments extra and extra2 may be used to pass additional scratch |
303 // registers. Set to no_reg if not needed. | 305 // registers. Set to no_reg if not needed. |
304 void GenerateProbe(MacroAssembler* masm, | 306 void GenerateProbe(MacroAssembler* masm, |
305 Code::Flags flags, | 307 Code::Flags flags, |
306 Register receiver, | 308 Register receiver, |
307 Register name, | 309 Register name, |
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901 JSFunction* constant_function_; | 903 JSFunction* constant_function_; |
902 bool is_simple_api_call_; | 904 bool is_simple_api_call_; |
903 FunctionTemplateInfo* expected_receiver_type_; | 905 FunctionTemplateInfo* expected_receiver_type_; |
904 CallHandlerInfo* api_call_info_; | 906 CallHandlerInfo* api_call_info_; |
905 }; | 907 }; |
906 | 908 |
907 | 909 |
908 } } // namespace v8::internal | 910 } } // namespace v8::internal |
909 | 911 |
910 #endif // V8_STUB_CACHE_H_ | 912 #endif // V8_STUB_CACHE_H_ |
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