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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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29 #define V8_LITHIUM_H_ | 29 #define V8_LITHIUM_H_ |
30 | 30 |
31 #include "hydrogen.h" | 31 #include "hydrogen.h" |
32 #include "lithium-allocator.h" | 32 #include "lithium-allocator.h" |
33 #include "safepoint-table.h" | 33 #include "safepoint-table.h" |
34 | 34 |
35 namespace v8 { | 35 namespace v8 { |
36 namespace internal { | 36 namespace internal { |
37 | 37 |
38 class LCodeGen; | 38 class LCodeGen; |
39 class LGapNode; | |
40 class Translation; | 39 class Translation; |
41 | 40 |
42 class LGapResolver BASE_EMBEDDED { | |
43 public: | |
44 LGapResolver(); | |
45 const ZoneList<LMoveOperands>* Resolve(const ZoneList<LMoveOperands>* moves, | |
46 LOperand* marker_operand); | |
47 | |
48 private: | |
49 LGapNode* LookupNode(LOperand* operand); | |
50 bool CanReach(LGapNode* a, LGapNode* b, int visited_id); | |
51 bool CanReach(LGapNode* a, LGapNode* b); | |
52 void RegisterMove(LMoveOperands move); | |
53 void AddResultMove(LOperand* from, LOperand* to); | |
54 void AddResultMove(LGapNode* from, LGapNode* to); | |
55 void ResolveCycle(LGapNode* start, LOperand* marker_operand); | |
56 | |
57 ZoneList<LGapNode*> nodes_; | |
58 ZoneList<LGapNode*> identified_cycles_; | |
59 ZoneList<LMoveOperands> result_; | |
60 int next_visited_id_; | |
61 }; | |
62 | |
63 | |
64 class LParallelMove : public ZoneObject { | 41 class LParallelMove : public ZoneObject { |
65 public: | 42 public: |
66 LParallelMove() : move_operands_(4) { } | 43 LParallelMove() : move_operands_(4) { } |
67 | 44 |
68 void AddMove(LOperand* from, LOperand* to) { | 45 void AddMove(LOperand* from, LOperand* to) { |
69 move_operands_.Add(LMoveOperands(from, to)); | 46 move_operands_.Add(LMoveOperands(from, to)); |
70 } | 47 } |
71 | 48 |
72 bool IsRedundant() const; | 49 bool IsRedundant() const; |
73 | 50 |
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183 LOperand** spilled_double_registers_; | 160 LOperand** spilled_double_registers_; |
184 | 161 |
185 LEnvironment* outer_; | 162 LEnvironment* outer_; |
186 | 163 |
187 friend class LCodegen; | 164 friend class LCodegen; |
188 }; | 165 }; |
189 | 166 |
190 } } // namespace v8::internal | 167 } } // namespace v8::internal |
191 | 168 |
192 #endif // V8_LITHIUM_H_ | 169 #endif // V8_LITHIUM_H_ |
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