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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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45 | 45 |
46 // Forward declarations. | 46 // Forward declarations. |
47 class JumpPatchSite; | 47 class JumpPatchSite; |
48 | 48 |
49 // AST node visitor which can tell whether a given statement will be breakable | 49 // AST node visitor which can tell whether a given statement will be breakable |
50 // when the code is compiled by the full compiler in the debugger. This means | 50 // when the code is compiled by the full compiler in the debugger. This means |
51 // that there will be an IC (load/store/call) in the code generated for the | 51 // that there will be an IC (load/store/call) in the code generated for the |
52 // debugger to piggybag on. | 52 // debugger to piggybag on. |
53 class BreakableStatementChecker: public AstVisitor { | 53 class BreakableStatementChecker: public AstVisitor { |
54 public: | 54 public: |
55 explicit BreakableStatementChecker(Isolate* isolate) : is_breakable_(false) { | 55 explicit BreakableStatementChecker(Zone* zone) : is_breakable_(false) { |
56 InitializeAstVisitor(isolate); | 56 InitializeAstVisitor(zone); |
57 } | 57 } |
58 | 58 |
59 void Check(Statement* stmt); | 59 void Check(Statement* stmt); |
60 void Check(Expression* stmt); | 60 void Check(Expression* stmt); |
61 | 61 |
62 bool is_breakable() { return is_breakable_; } | 62 bool is_breakable() { return is_breakable_; } |
63 | 63 |
64 private: | 64 private: |
65 // AST node visit functions. | 65 // AST node visit functions. |
66 #define DECLARE_VISIT(type) virtual void Visit##type(type* node); | 66 #define DECLARE_VISIT(type) virtual void Visit##type(type* node); |
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92 loop_depth_(0), | 92 loop_depth_(0), |
93 globals_(NULL), | 93 globals_(NULL), |
94 context_(NULL), | 94 context_(NULL), |
95 bailout_entries_(info->HasDeoptimizationSupport() | 95 bailout_entries_(info->HasDeoptimizationSupport() |
96 ? info->function()->ast_node_count() : 0, | 96 ? info->function()->ast_node_count() : 0, |
97 info->zone()), | 97 info->zone()), |
98 back_edges_(2, info->zone()), | 98 back_edges_(2, info->zone()), |
99 type_feedback_cells_(info->HasDeoptimizationSupport() | 99 type_feedback_cells_(info->HasDeoptimizationSupport() |
100 ? info->function()->ast_node_count() : 0, | 100 ? info->function()->ast_node_count() : 0, |
101 info->zone()), | 101 info->zone()), |
102 ic_total_count_(0), | 102 ic_total_count_(0) { |
103 zone_(info->zone()) { | |
104 Initialize(); | 103 Initialize(); |
105 } | 104 } |
106 | 105 |
107 void Initialize(); | 106 void Initialize(); |
108 | 107 |
109 static bool MakeCode(CompilationInfo* info); | 108 static bool MakeCode(CompilationInfo* info); |
110 | 109 |
111 // Encode state and pc-offset as a BitField<type, start, size>. | 110 // Encode state and pc-offset as a BitField<type, start, size>. |
112 // Only use 30 bits because we encode the result as a smi. | 111 // Only use 30 bits because we encode the result as a smi. |
113 class StateField : public BitField<State, 0, 1> { }; | 112 class StateField : public BitField<State, 0, 1> { }; |
114 class PcField : public BitField<unsigned, 1, 30-1> { }; | 113 class PcField : public BitField<unsigned, 1, 30-1> { }; |
115 | 114 |
116 static const char* State2String(State state) { | 115 static const char* State2String(State state) { |
117 switch (state) { | 116 switch (state) { |
118 case NO_REGISTERS: return "NO_REGISTERS"; | 117 case NO_REGISTERS: return "NO_REGISTERS"; |
119 case TOS_REG: return "TOS_REG"; | 118 case TOS_REG: return "TOS_REG"; |
120 } | 119 } |
121 UNREACHABLE(); | 120 UNREACHABLE(); |
122 return NULL; | 121 return NULL; |
123 } | 122 } |
124 | 123 |
125 Zone* zone() const { return zone_; } | |
126 | |
127 static const int kMaxBackEdgeWeight = 127; | 124 static const int kMaxBackEdgeWeight = 127; |
128 | 125 |
129 // Platform-specific code size multiplier. | 126 // Platform-specific code size multiplier. |
130 #if V8_TARGET_ARCH_IA32 | 127 #if V8_TARGET_ARCH_IA32 |
131 static const int kCodeSizeMultiplier = 100; | 128 static const int kCodeSizeMultiplier = 100; |
132 #elif V8_TARGET_ARCH_X64 | 129 #elif V8_TARGET_ARCH_X64 |
133 static const int kCodeSizeMultiplier = 162; | 130 static const int kCodeSizeMultiplier = 162; |
134 #elif V8_TARGET_ARCH_ARM | 131 #elif V8_TARGET_ARCH_ARM |
135 static const int kCodeSizeMultiplier = 142; | 132 static const int kCodeSizeMultiplier = 142; |
136 #elif V8_TARGET_ARCH_MIPS | 133 #elif V8_TARGET_ARCH_MIPS |
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838 int module_index_; | 835 int module_index_; |
839 const ExpressionContext* context_; | 836 const ExpressionContext* context_; |
840 ZoneList<BailoutEntry> bailout_entries_; | 837 ZoneList<BailoutEntry> bailout_entries_; |
841 GrowableBitVector prepared_bailout_ids_; | 838 GrowableBitVector prepared_bailout_ids_; |
842 ZoneList<BackEdgeEntry> back_edges_; | 839 ZoneList<BackEdgeEntry> back_edges_; |
843 ZoneList<TypeFeedbackCellEntry> type_feedback_cells_; | 840 ZoneList<TypeFeedbackCellEntry> type_feedback_cells_; |
844 int ic_total_count_; | 841 int ic_total_count_; |
845 Handle<FixedArray> handler_table_; | 842 Handle<FixedArray> handler_table_; |
846 Handle<Cell> profiling_counter_; | 843 Handle<Cell> profiling_counter_; |
847 bool generate_debug_code_; | 844 bool generate_debug_code_; |
848 Zone* zone_; | |
849 | 845 |
850 friend class NestedStatement; | 846 friend class NestedStatement; |
851 | 847 |
852 DEFINE_AST_VISITOR_SUBCLASS_MEMBERS(); | 848 DEFINE_AST_VISITOR_SUBCLASS_MEMBERS(); |
853 DISALLOW_COPY_AND_ASSIGN(FullCodeGenerator); | 849 DISALLOW_COPY_AND_ASSIGN(FullCodeGenerator); |
854 }; | 850 }; |
855 | 851 |
856 | 852 |
857 // A map from property names to getter/setter pairs allocated in the zone. | 853 // A map from property names to getter/setter pairs allocated in the zone. |
858 class AccessorTable: public TemplateHashMap<Literal, | 854 class AccessorTable: public TemplateHashMap<Literal, |
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959 | 955 |
960 Address start_; | 956 Address start_; |
961 Address instruction_start_; | 957 Address instruction_start_; |
962 uint32_t length_; | 958 uint32_t length_; |
963 }; | 959 }; |
964 | 960 |
965 | 961 |
966 } } // namespace v8::internal | 962 } } // namespace v8::internal |
967 | 963 |
968 #endif // V8_FULL_CODEGEN_H_ | 964 #endif // V8_FULL_CODEGEN_H_ |
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