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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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31 #include "hydrogen.h" | 31 #include "hydrogen.h" |
32 #include "lithium-allocator.h" | 32 #include "lithium-allocator.h" |
33 #include "lithium.h" | 33 #include "lithium.h" |
34 #include "safepoint-table.h" | 34 #include "safepoint-table.h" |
35 | 35 |
36 namespace v8 { | 36 namespace v8 { |
37 namespace internal { | 37 namespace internal { |
38 | 38 |
39 // Forward declarations. | 39 // Forward declarations. |
40 class LCodeGen; | 40 class LCodeGen; |
41 class LEnvironment; | |
42 class Translation; | |
43 | 41 |
44 | 42 |
45 // Type hierarchy: | 43 // Type hierarchy: |
46 // | 44 // |
47 // LInstruction | 45 // LInstruction |
48 // LAccessArgumentsAt | 46 // LAccessArgumentsAt |
49 // LArgumentsElements | 47 // LArgumentsElements |
50 // LArgumentsLength | 48 // LArgumentsLength |
51 // LBinaryOperation | 49 // LBinaryOperation |
52 // LAddI | 50 // LAddI |
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1752 LOperand* double_register_spills_[DoubleRegister::kNumAllocatableRegisters]; | 1750 LOperand* double_register_spills_[DoubleRegister::kNumAllocatableRegisters]; |
1753 }; | 1751 }; |
1754 | 1752 |
1755 | 1753 |
1756 class LStackCheck: public LInstruction { | 1754 class LStackCheck: public LInstruction { |
1757 public: | 1755 public: |
1758 DECLARE_CONCRETE_INSTRUCTION(StackCheck, "stack-check") | 1756 DECLARE_CONCRETE_INSTRUCTION(StackCheck, "stack-check") |
1759 }; | 1757 }; |
1760 | 1758 |
1761 | 1759 |
1762 class LPointerMap: public ZoneObject { | |
1763 public: | |
1764 explicit LPointerMap(int position) | |
1765 : pointer_operands_(8), position_(position), lithium_position_(-1) { } | |
1766 | |
1767 const ZoneList<LOperand*>* operands() const { return &pointer_operands_; } | |
1768 int position() const { return position_; } | |
1769 int lithium_position() const { return lithium_position_; } | |
1770 | |
1771 void set_lithium_position(int pos) { | |
1772 ASSERT(lithium_position_ == -1); | |
1773 lithium_position_ = pos; | |
1774 } | |
1775 | |
1776 void RecordPointer(LOperand* op); | |
1777 void PrintTo(StringStream* stream) const; | |
1778 | |
1779 private: | |
1780 ZoneList<LOperand*> pointer_operands_; | |
1781 int position_; | |
1782 int lithium_position_; | |
1783 }; | |
1784 | |
1785 | |
1786 class LEnvironment: public ZoneObject { | |
1787 public: | |
1788 LEnvironment(Handle<JSFunction> closure, | |
1789 int ast_id, | |
1790 int parameter_count, | |
1791 int argument_count, | |
1792 int value_count, | |
1793 LEnvironment* outer) | |
1794 : closure_(closure), | |
1795 arguments_stack_height_(argument_count), | |
1796 deoptimization_index_(Safepoint::kNoDeoptimizationIndex), | |
1797 translation_index_(-1), | |
1798 ast_id_(ast_id), | |
1799 parameter_count_(parameter_count), | |
1800 values_(value_count), | |
1801 representations_(value_count), | |
1802 spilled_registers_(NULL), | |
1803 spilled_double_registers_(NULL), | |
1804 outer_(outer) { | |
1805 } | |
1806 | |
1807 Handle<JSFunction> closure() const { return closure_; } | |
1808 int arguments_stack_height() const { return arguments_stack_height_; } | |
1809 int deoptimization_index() const { return deoptimization_index_; } | |
1810 int translation_index() const { return translation_index_; } | |
1811 int ast_id() const { return ast_id_; } | |
1812 int parameter_count() const { return parameter_count_; } | |
1813 const ZoneList<LOperand*>* values() const { return &values_; } | |
1814 LEnvironment* outer() const { return outer_; } | |
1815 | |
1816 void AddValue(LOperand* operand, Representation representation) { | |
1817 values_.Add(operand); | |
1818 representations_.Add(representation); | |
1819 } | |
1820 | |
1821 bool HasTaggedValueAt(int index) const { | |
1822 return representations_[index].IsTagged(); | |
1823 } | |
1824 | |
1825 void Register(int deoptimization_index, int translation_index) { | |
1826 ASSERT(!HasBeenRegistered()); | |
1827 deoptimization_index_ = deoptimization_index; | |
1828 translation_index_ = translation_index; | |
1829 } | |
1830 bool HasBeenRegistered() const { | |
1831 return deoptimization_index_ != Safepoint::kNoDeoptimizationIndex; | |
1832 } | |
1833 | |
1834 void SetSpilledRegisters(LOperand** registers, | |
1835 LOperand** double_registers) { | |
1836 spilled_registers_ = registers; | |
1837 spilled_double_registers_ = double_registers; | |
1838 } | |
1839 | |
1840 // Emit frame translation commands for this environment. | |
1841 void WriteTranslation(LCodeGen* cgen, Translation* translation) const; | |
1842 | |
1843 void PrintTo(StringStream* stream) const; | |
1844 | |
1845 private: | |
1846 Handle<JSFunction> closure_; | |
1847 int arguments_stack_height_; | |
1848 int deoptimization_index_; | |
1849 int translation_index_; | |
1850 int ast_id_; | |
1851 int parameter_count_; | |
1852 ZoneList<LOperand*> values_; | |
1853 ZoneList<Representation> representations_; | |
1854 | |
1855 // Allocation index indexed arrays of spill slot operands for registers | |
1856 // that are also in spill slots at an OSR entry. NULL for environments | |
1857 // that do not correspond to an OSR entry. | |
1858 LOperand** spilled_registers_; | |
1859 LOperand** spilled_double_registers_; | |
1860 | |
1861 LEnvironment* outer_; | |
1862 }; | |
1863 | |
1864 class LChunkBuilder; | 1760 class LChunkBuilder; |
1865 class LChunk: public ZoneObject { | 1761 class LChunk: public ZoneObject { |
1866 public: | 1762 public: |
1867 explicit LChunk(HGraph* graph); | 1763 explicit LChunk(HGraph* graph); |
1868 | 1764 |
1869 int AddInstruction(LInstruction* instruction, HBasicBlock* block); | 1765 int AddInstruction(LInstruction* instruction, HBasicBlock* block); |
1870 LConstantOperand* DefineConstantOperand(HConstant* constant); | 1766 LConstantOperand* DefineConstantOperand(HConstant* constant); |
1871 Handle<Object> LookupLiteral(LConstantOperand* operand) const; | 1767 Handle<Object> LookupLiteral(LConstantOperand* operand) const; |
1872 Representation LookupLiteralRepresentation(LConstantOperand* operand) const; | 1768 Representation LookupLiteralRepresentation(LConstantOperand* operand) const; |
1873 | 1769 |
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2053 DISALLOW_COPY_AND_ASSIGN(LChunkBuilder); | 1949 DISALLOW_COPY_AND_ASSIGN(LChunkBuilder); |
2054 }; | 1950 }; |
2055 | 1951 |
2056 #undef DECLARE_HYDROGEN_ACCESSOR | 1952 #undef DECLARE_HYDROGEN_ACCESSOR |
2057 #undef DECLARE_INSTRUCTION | 1953 #undef DECLARE_INSTRUCTION |
2058 #undef DECLARE_CONCRETE_INSTRUCTION | 1954 #undef DECLARE_CONCRETE_INSTRUCTION |
2059 | 1955 |
2060 } } // namespace v8::internal | 1956 } } // namespace v8::internal |
2061 | 1957 |
2062 #endif // V8_ARM_LITHIUM_ARM_H_ | 1958 #endif // V8_ARM_LITHIUM_ARM_H_ |
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