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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 // 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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97 V(CompareIDAndBranch) \ | 97 V(CompareIDAndBranch) \ |
98 V(CompareGeneric) \ | 98 V(CompareGeneric) \ |
99 V(CompareObjectEqAndBranch) \ | 99 V(CompareObjectEqAndBranch) \ |
100 V(CompareMap) \ | 100 V(CompareMap) \ |
101 V(CompareConstantEqAndBranch) \ | 101 V(CompareConstantEqAndBranch) \ |
102 V(Constant) \ | 102 V(Constant) \ |
103 V(Context) \ | 103 V(Context) \ |
104 V(DebugBreak) \ | 104 V(DebugBreak) \ |
105 V(DeclareGlobals) \ | 105 V(DeclareGlobals) \ |
106 V(DeleteProperty) \ | 106 V(DeleteProperty) \ |
| 107 V(DeoptCounter) \ |
| 108 V(DeoptCounterAdd) \ |
107 V(Deoptimize) \ | 109 V(Deoptimize) \ |
108 V(Div) \ | 110 V(Div) \ |
109 V(DummyUse) \ | 111 V(DummyUse) \ |
110 V(ElementsKind) \ | 112 V(ElementsKind) \ |
111 V(EnterInlined) \ | 113 V(EnterInlined) \ |
112 V(FixedArrayBaseLength) \ | 114 V(FixedArrayBaseLength) \ |
113 V(ForceRepresentation) \ | 115 V(ForceRepresentation) \ |
114 V(FunctionLiteral) \ | 116 V(FunctionLiteral) \ |
115 V(GetCachedArrayIndex) \ | 117 V(GetCachedArrayIndex) \ |
116 V(GlobalObject) \ | 118 V(GlobalObject) \ |
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1511 protected: | 1513 protected: |
1512 virtual void InternalSetOperandAt(int index, HValue* value) { | 1514 virtual void InternalSetOperandAt(int index, HValue* value) { |
1513 values_[index] = value; | 1515 values_[index] = value; |
1514 } | 1516 } |
1515 | 1517 |
1516 private: | 1518 private: |
1517 ZoneList<HValue*> values_; | 1519 ZoneList<HValue*> values_; |
1518 }; | 1520 }; |
1519 | 1521 |
1520 | 1522 |
| 1523 // Deoptimization counter is a conditional deoptimization instruction, executing |
| 1524 // only when HDeoptCounter's internal cell value is <= 0. |
| 1525 // Value itself can be manipulated by using HDeoptCounterAdd instruction. |
| 1526 class HDeoptCounter: public HTemplateInstruction<0> { |
| 1527 public: |
| 1528 HDeoptCounter(int id, int initial_value, int max_value) |
| 1529 : id_(id), |
| 1530 initial_value_(initial_value), |
| 1531 max_value_(max_value) { |
| 1532 ASSERT(initial_value_ <= max_value_); |
| 1533 ASSERT(Smi::IsValid(initial_value_)); |
| 1534 ASSERT(Smi::IsValid(max_value_)); |
| 1535 } |
| 1536 |
| 1537 virtual Representation RequiredInputRepresentation(int index) { |
| 1538 return Representation::None(); |
| 1539 } |
| 1540 |
| 1541 virtual void PrintDataTo(StringStream* stream); |
| 1542 |
| 1543 inline int id() const { return id_; } |
| 1544 inline int initial_value() const { return initial_value_; } |
| 1545 inline int max_value() const { return max_value_; } |
| 1546 |
| 1547 DECLARE_CONCRETE_INSTRUCTION(DeoptCounter) |
| 1548 |
| 1549 private: |
| 1550 int id_; |
| 1551 int initial_value_; |
| 1552 int max_value_; |
| 1553 }; |
| 1554 |
| 1555 |
| 1556 // Modify HDeoptCounter's cell's value by adding `delta` to it. |
| 1557 // NOTE: May cause soft deoptimization on negative or zero cell's value. |
| 1558 class HDeoptCounterAdd: public HTemplateInstruction<0> { |
| 1559 public: |
| 1560 explicit HDeoptCounterAdd(HDeoptCounter* counter, int delta) |
| 1561 : counter_(counter), |
| 1562 delta_(delta) { |
| 1563 } |
| 1564 |
| 1565 virtual Representation RequiredInputRepresentation(int index) { |
| 1566 return Representation::None(); |
| 1567 } |
| 1568 |
| 1569 virtual void PrintDataTo(StringStream* stream); |
| 1570 |
| 1571 inline HDeoptCounter* counter() const { return counter_; } |
| 1572 inline int delta() { return delta_; } |
| 1573 |
| 1574 DECLARE_CONCRETE_INSTRUCTION(DeoptCounterAdd) |
| 1575 |
| 1576 private: |
| 1577 HDeoptCounter* counter_; |
| 1578 int delta_; |
| 1579 }; |
| 1580 |
| 1581 |
1521 class HGoto: public HTemplateControlInstruction<1, 0> { | 1582 class HGoto: public HTemplateControlInstruction<1, 0> { |
1522 public: | 1583 public: |
1523 explicit HGoto(HBasicBlock* target) { | 1584 explicit HGoto(HBasicBlock* target) { |
1524 SetSuccessorAt(0, target); | 1585 SetSuccessorAt(0, target); |
1525 } | 1586 } |
1526 | 1587 |
1527 virtual Representation RequiredInputRepresentation(int index) { | 1588 virtual Representation RequiredInputRepresentation(int index) { |
1528 return Representation::None(); | 1589 return Representation::None(); |
1529 } | 1590 } |
1530 | 1591 |
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6500 virtual bool IsDeletable() const { return true; } | 6561 virtual bool IsDeletable() const { return true; } |
6501 }; | 6562 }; |
6502 | 6563 |
6503 | 6564 |
6504 #undef DECLARE_INSTRUCTION | 6565 #undef DECLARE_INSTRUCTION |
6505 #undef DECLARE_CONCRETE_INSTRUCTION | 6566 #undef DECLARE_CONCRETE_INSTRUCTION |
6506 | 6567 |
6507 } } // namespace v8::internal | 6568 } } // namespace v8::internal |
6508 | 6569 |
6509 #endif // V8_HYDROGEN_INSTRUCTIONS_H_ | 6570 #endif // V8_HYDROGEN_INSTRUCTIONS_H_ |
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