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Issue 17229005: Convert UnaryOpStub to a HydrogenCodeStub (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: rebase Created 7 years, 5 months ago
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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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74 virtual bool SometimesSetsUpAFrame() { return false; } 74 virtual bool SometimesSetsUpAFrame() { return false; }
75 75
76 private: 76 private:
77 SaveFPRegsMode save_doubles_; 77 SaveFPRegsMode save_doubles_;
78 78
79 Major MajorKey() { return StoreBufferOverflow; } 79 Major MajorKey() { return StoreBufferOverflow; }
80 int MinorKey() { return (save_doubles_ == kSaveFPRegs) ? 1 : 0; } 80 int MinorKey() { return (save_doubles_ == kSaveFPRegs) ? 1 : 0; }
81 }; 81 };
82 82
83 83
84 class UnaryOpStub: public PlatformCodeStub {
85 public:
86 UnaryOpStub(Token::Value op,
87 UnaryOverwriteMode mode,
88 UnaryOpIC::TypeInfo operand_type = UnaryOpIC::UNINITIALIZED)
89 : op_(op),
90 mode_(mode),
91 operand_type_(operand_type) {
92 }
93
94 private:
95 Token::Value op_;
96 UnaryOverwriteMode mode_;
97
98 // Operand type information determined at runtime.
99 UnaryOpIC::TypeInfo operand_type_;
100
101 virtual void PrintName(StringStream* stream);
102
103 class ModeBits: public BitField<UnaryOverwriteMode, 0, 1> {};
104 class OpBits: public BitField<Token::Value, 1, 7> {};
105 class OperandTypeInfoBits: public BitField<UnaryOpIC::TypeInfo, 8, 3> {};
106
107 Major MajorKey() { return UnaryOp; }
108 int MinorKey() {
109 return ModeBits::encode(mode_)
110 | OpBits::encode(op_)
111 | OperandTypeInfoBits::encode(operand_type_);
112 }
113
114 // Note: A lot of the helper functions below will vanish when we use virtual
115 // function instead of switch more often.
116 void Generate(MacroAssembler* masm);
117
118 void GenerateTypeTransition(MacroAssembler* masm);
119
120 void GenerateSmiStub(MacroAssembler* masm);
121 void GenerateSmiStubSub(MacroAssembler* masm);
122 void GenerateSmiStubBitNot(MacroAssembler* masm);
123 void GenerateSmiCodeSub(MacroAssembler* masm,
124 Label* non_smi,
125 Label* slow,
126 Label::Distance non_smi_near = Label::kFar,
127 Label::Distance slow_near = Label::kFar);
128 void GenerateSmiCodeBitNot(MacroAssembler* masm,
129 Label* non_smi,
130 Label::Distance non_smi_near);
131
132 void GenerateNumberStub(MacroAssembler* masm);
133 void GenerateNumberStubSub(MacroAssembler* masm);
134 void GenerateNumberStubBitNot(MacroAssembler* masm);
135 void GenerateHeapNumberCodeSub(MacroAssembler* masm, Label* slow);
136 void GenerateHeapNumberCodeBitNot(MacroAssembler* masm, Label* slow);
137
138 void GenerateGenericStub(MacroAssembler* masm);
139 void GenerateGenericStubSub(MacroAssembler* masm);
140 void GenerateGenericStubBitNot(MacroAssembler* masm);
141 void GenerateGenericCodeFallback(MacroAssembler* masm);
142
143 virtual Code::Kind GetCodeKind() const { return Code::UNARY_OP_IC; }
144
145 virtual InlineCacheState GetICState() {
146 return UnaryOpIC::ToState(operand_type_);
147 }
148
149 virtual void FinishCode(Handle<Code> code) {
150 code->set_unary_op_type(operand_type_);
151 }
152 };
153
154
155 class StringHelper : public AllStatic { 84 class StringHelper : public AllStatic {
156 public: 85 public:
157 // Generate code for copying characters using a simple loop. This should only 86 // Generate code for copying characters using a simple loop. This should only
158 // be used in places where the number of characters is small and the 87 // be used in places where the number of characters is small and the
159 // additional setup and checking in GenerateCopyCharactersREP adds too much 88 // additional setup and checking in GenerateCopyCharactersREP adds too much
160 // overhead. Copying of overlapping regions is not supported. 89 // overhead. Copying of overlapping regions is not supported.
161 static void GenerateCopyCharacters(MacroAssembler* masm, 90 static void GenerateCopyCharacters(MacroAssembler* masm,
162 Register dest, 91 Register dest,
163 Register src, 92 Register src,
164 Register count, 93 Register count,
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621 RememberedSetAction remembered_set_action_; 550 RememberedSetAction remembered_set_action_;
622 SaveFPRegsMode save_fp_regs_mode_; 551 SaveFPRegsMode save_fp_regs_mode_;
623 Label slow_; 552 Label slow_;
624 RegisterAllocation regs_; 553 RegisterAllocation regs_;
625 }; 554 };
626 555
627 556
628 } } // namespace v8::internal 557 } } // namespace v8::internal
629 558
630 #endif // V8_X64_CODE_STUBS_X64_H_ 559 #endif // V8_X64_CODE_STUBS_X64_H_
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