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