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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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1264 } | 1264 } |
1265 int ast_id_; | 1265 int ast_id_; |
1266 int pop_count_; | 1266 int pop_count_; |
1267 ZoneList<HValue*> values_; | 1267 ZoneList<HValue*> values_; |
1268 ZoneList<int> assigned_indexes_; | 1268 ZoneList<int> assigned_indexes_; |
1269 }; | 1269 }; |
1270 | 1270 |
1271 | 1271 |
1272 class HStackCheck: public HTemplateInstruction<1> { | 1272 class HStackCheck: public HTemplateInstruction<1> { |
1273 public: | 1273 public: |
1274 enum Type { | 1274 explicit HStackCheck(HValue* context) { |
1275 kFunctionEntry, | |
1276 kBackwardsBranch | |
1277 }; | |
1278 | |
1279 HStackCheck(HValue* context, Type type) : type_(type) { | |
1280 SetOperandAt(0, context); | 1275 SetOperandAt(0, context); |
1281 } | 1276 } |
1282 | 1277 |
1283 HValue* context() { return OperandAt(0); } | 1278 HValue* context() { return OperandAt(0); } |
1284 | 1279 |
1285 virtual Representation RequiredInputRepresentation(int index) { | 1280 virtual Representation RequiredInputRepresentation(int index) { |
1286 return Representation::Tagged(); | 1281 return Representation::Tagged(); |
1287 } | 1282 } |
1288 | 1283 |
1289 void Eliminate() { | 1284 void Eliminate() { |
1290 // The stack check eliminator might try to eliminate the same stack | 1285 // The stack check eliminator might try to eliminate the same stack |
1291 // check instruction multiple times. | 1286 // check instruction multiple times. |
1292 if (IsLinked()) { | 1287 if (IsLinked()) { |
1293 DeleteFromGraph(); | 1288 DeleteFromGraph(); |
1294 } | 1289 } |
1295 } | 1290 } |
1296 | 1291 |
1297 bool is_function_entry() { return type_ == kFunctionEntry; } | |
1298 bool is_backwards_branch() { return type_ == kBackwardsBranch; } | |
1299 | |
1300 DECLARE_CONCRETE_INSTRUCTION(StackCheck) | 1292 DECLARE_CONCRETE_INSTRUCTION(StackCheck) |
1301 | |
1302 private: | |
1303 Type type_; | |
1304 }; | 1293 }; |
1305 | 1294 |
1306 | 1295 |
1307 class HEnterInlined: public HTemplateInstruction<0> { | 1296 class HEnterInlined: public HTemplateInstruction<0> { |
1308 public: | 1297 public: |
1309 HEnterInlined(Handle<JSFunction> closure, | 1298 HEnterInlined(Handle<JSFunction> closure, |
1310 FunctionLiteral* function, | 1299 FunctionLiteral* function, |
1311 CallKind call_kind) | 1300 CallKind call_kind) |
1312 : closure_(closure), | 1301 : closure_(closure), |
1313 function_(function), | 1302 function_(function), |
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4426 | 4415 |
4427 DECLARE_CONCRETE_INSTRUCTION(In) | 4416 DECLARE_CONCRETE_INSTRUCTION(In) |
4428 }; | 4417 }; |
4429 | 4418 |
4430 #undef DECLARE_INSTRUCTION | 4419 #undef DECLARE_INSTRUCTION |
4431 #undef DECLARE_CONCRETE_INSTRUCTION | 4420 #undef DECLARE_CONCRETE_INSTRUCTION |
4432 | 4421 |
4433 } } // namespace v8::internal | 4422 } } // namespace v8::internal |
4434 | 4423 |
4435 #endif // V8_HYDROGEN_INSTRUCTIONS_H_ | 4424 #endif // V8_HYDROGEN_INSTRUCTIONS_H_ |
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