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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" |
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| 174 // debugger to deoptimize stack frames to allow inspection. | 174 // debugger to deoptimize stack frames to allow inspection. |
| 175 DEBUGGER, | 175 DEBUGGER, |
| 176 kBailoutTypesWithCodeEntry = SOFT + 1 | 176 kBailoutTypesWithCodeEntry = SOFT + 1 |
| 177 }; | 177 }; |
| 178 | 178 |
| 179 #define DEOPT_MESSAGES_CONSTANTS(C, T) C, | 179 #define DEOPT_MESSAGES_CONSTANTS(C, T) C, |
| 180 enum DeoptReason { | 180 enum DeoptReason { |
| 181 DEOPT_MESSAGES_LIST(DEOPT_MESSAGES_CONSTANTS) kLastDeoptReason | 181 DEOPT_MESSAGES_LIST(DEOPT_MESSAGES_CONSTANTS) kLastDeoptReason |
| 182 }; | 182 }; |
| 183 #undef DEOPT_MESSAGES_CONSTANTS | 183 #undef DEOPT_MESSAGES_CONSTANTS |
| 184 | |
| 185 static const char* GetDeoptReason(DeoptReason deopt_reason); | 184 static const char* GetDeoptReason(DeoptReason deopt_reason); |
| 186 | 185 |
| 187 struct DeoptInfo { | 186 struct DeoptInfo { |
| 188 DeoptInfo(int r, const char* m, DeoptReason d) | 187 DeoptInfo(int r, const char* m, DeoptReason d) |
| 189 : raw_position(r), mnemonic(m), deopt_reason(d) {} | 188 : raw_position(r), mnemonic(m), deopt_reason(d) {} |
| 190 | 189 |
| 191 bool operator==(const DeoptInfo& other) const { | |
| 192 return raw_position == other.raw_position && | |
| 193 CStringEquals(mnemonic, other.mnemonic) && | |
| 194 deopt_reason == other.deopt_reason; | |
| 195 } | |
| 196 | |
| 197 bool operator!=(const DeoptInfo& other) const { return !(*this == other); } | |
| 198 | |
| 199 int raw_position; | 190 int raw_position; |
| 200 const char* mnemonic; | 191 const char* mnemonic; |
| 201 DeoptReason deopt_reason; | 192 DeoptReason deopt_reason; |
| 202 }; | 193 }; |
| 203 | 194 |
| 204 static DeoptInfo GetDeoptInfo(Code* code, int bailout_id); | 195 static DeoptInfo GetDeoptInfo(Code* code, int bailout_id); |
| 205 | 196 |
| 206 struct JumpTableEntry : public ZoneObject { | 197 struct JumpTableEntry : public ZoneObject { |
| 207 inline JumpTableEntry(Address entry, const DeoptInfo& deopt_info, | 198 inline JumpTableEntry(Address entry, const DeoptInfo& deopt_info, |
| 208 Deoptimizer::BailoutType type, bool frame) | 199 Deoptimizer::BailoutType type, bool frame) |
| 209 : label(), | 200 : label(), |
| 210 address(entry), | 201 address(entry), |
| 211 deopt_info(deopt_info), | 202 deopt_info(deopt_info), |
| 212 bailout_type(type), | 203 bailout_type(type), |
| 213 needs_frame(frame) {} | 204 needs_frame(frame) {} |
| 214 | 205 |
| 215 bool IsEquivalentTo(const JumpTableEntry& other) const { | 206 bool IsEquivalentTo(const JumpTableEntry& other) const { |
| 216 return address == other.address && bailout_type == other.bailout_type && | 207 return address == other.address && bailout_type == other.bailout_type && |
| 217 needs_frame == other.needs_frame && | 208 needs_frame == other.needs_frame; |
| 218 (!FLAG_trace_deopt || deopt_info == other.deopt_info); | |
| 219 } | 209 } |
| 220 | 210 |
| 221 Label label; | 211 Label label; |
| 222 Address address; | 212 Address address; |
| 223 DeoptInfo deopt_info; | 213 DeoptInfo deopt_info; |
| 224 Deoptimizer::BailoutType bailout_type; | 214 Deoptimizer::BailoutType bailout_type; |
| 225 bool needs_frame; | 215 bool needs_frame; |
| 226 }; | 216 }; |
| 227 | 217 |
| 228 static bool TraceEnabledFor(BailoutType deopt_type, | 218 static bool TraceEnabledFor(BailoutType deopt_type, |
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| 1066 Object** parameters_; | 1056 Object** parameters_; |
| 1067 Object** expression_stack_; | 1057 Object** expression_stack_; |
| 1068 int source_position_; | 1058 int source_position_; |
| 1069 | 1059 |
| 1070 friend class Deoptimizer; | 1060 friend class Deoptimizer; |
| 1071 }; | 1061 }; |
| 1072 | 1062 |
| 1073 } } // namespace v8::internal | 1063 } } // namespace v8::internal |
| 1074 | 1064 |
| 1075 #endif // V8_DEOPTIMIZER_H_ | 1065 #endif // V8_DEOPTIMIZER_H_ |
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