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1 // Copyright (c) 2016, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2016, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 // Classes that describe assembly patterns as used by inline caches. | 4 // Classes that describe assembly patterns as used by inline caches. |
5 | 5 |
6 #ifndef VM_INSTRUCTIONS_DBC_H_ | 6 #ifndef VM_INSTRUCTIONS_DBC_H_ |
7 #define VM_INSTRUCTIONS_DBC_H_ | 7 #define VM_INSTRUCTIONS_DBC_H_ |
8 | 8 |
9 #ifndef VM_INSTRUCTIONS_H_ | 9 #ifndef VM_INSTRUCTIONS_H_ |
10 #error Do not include instructions_dbc.h directly; use instructions.h instead. | 10 #error Do not include instructions_dbc.h directly; use instructions.h instead. |
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50 | 50 |
51 class CallPattern : public ValueObject { | 51 class CallPattern : public ValueObject { |
52 public: | 52 public: |
53 CallPattern(uword pc, const Code& code); | 53 CallPattern(uword pc, const Code& code); |
54 | 54 |
55 RawICData* IcData(); | 55 RawICData* IcData(); |
56 | 56 |
57 RawCode* TargetCode() const; | 57 RawCode* TargetCode() const; |
58 void SetTargetCode(const Code& code) const; | 58 void SetTargetCode(const Code& code) const; |
59 | 59 |
60 static void InsertDeoptCallAt(uword pc); | 60 // This constant length is only valid for inserted call patterns used for |
| 61 // lazy deoptimization. Regular call pattern may vary in length. |
| 62 static int DeoptCallPatternLengthInBytes(); |
| 63 static int DeoptCallPatternLengthInInstructions(); |
| 64 |
| 65 static void InsertDeoptCallAt(uword pc, uword target_address); |
61 | 66 |
62 private: | 67 private: |
63 const ObjectPool& object_pool_; | 68 const ObjectPool& object_pool_; |
64 | 69 |
65 uword end_; | 70 uword end_; |
66 uword ic_data_load_end_; | 71 uword ic_data_load_end_; |
67 | 72 |
68 intptr_t target_code_pool_index_; | 73 intptr_t target_code_pool_index_; |
69 ICData& ic_data_; | 74 ICData& ic_data_; |
70 | 75 |
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129 | 134 |
130 bool IsValid() const; | 135 bool IsValid() const; |
131 | 136 |
132 private: | 137 private: |
133 const uword pc_; | 138 const uword pc_; |
134 }; | 139 }; |
135 | 140 |
136 } // namespace dart | 141 } // namespace dart |
137 | 142 |
138 #endif // VM_INSTRUCTIONS_DBC_H_ | 143 #endif // VM_INSTRUCTIONS_DBC_H_ |
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