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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 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef V8_CODE_STUBS_H_ | 5 #ifndef V8_CODE_STUBS_H_ |
6 #define V8_CODE_STUBS_H_ | 6 #define V8_CODE_STUBS_H_ |
7 | 7 |
8 #include "src/allocation.h" | 8 #include "src/allocation.h" |
9 #include "src/assembler.h" | 9 #include "src/assembler.h" |
10 #include "src/code-stub-assembler.h" | 10 #include "src/code-stub-assembler.h" |
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1127 // Maximum number of properties in copied object. | 1127 // Maximum number of properties in copied object. |
1128 static const int kMaximumClonedProperties = 6; | 1128 static const int kMaximumClonedProperties = 6; |
1129 | 1129 |
1130 FastCloneShallowObjectStub(Isolate* isolate, int length) | 1130 FastCloneShallowObjectStub(Isolate* isolate, int length) |
1131 : TurboFanCodeStub(isolate) { | 1131 : TurboFanCodeStub(isolate) { |
1132 DCHECK_GE(length, 0); | 1132 DCHECK_GE(length, 0); |
1133 DCHECK_LE(length, kMaximumClonedProperties); | 1133 DCHECK_LE(length, kMaximumClonedProperties); |
1134 minor_key_ = LengthBits::encode(LengthBits::encode(length)); | 1134 minor_key_ = LengthBits::encode(LengthBits::encode(length)); |
1135 } | 1135 } |
1136 | 1136 |
| 1137 static compiler::Node* GenerateFastPath( |
| 1138 CodeStubAssembler* assembler, |
| 1139 compiler::CodeAssembler::Label* call_runtime, compiler::Node* closure, |
| 1140 compiler::Node* literals_index, compiler::Node* properties_count); |
| 1141 |
| 1142 static bool IsSupported(ObjectLiteral* expr); |
| 1143 static int PropertiesCount(int literal_length); |
| 1144 |
1137 int length() const { return LengthBits::decode(minor_key_); } | 1145 int length() const { return LengthBits::decode(minor_key_); } |
1138 | 1146 |
1139 private: | 1147 private: |
1140 class LengthBits : public BitField<int, 0, 4> {}; | 1148 class LengthBits : public BitField<int, 0, 4> {}; |
1141 | 1149 |
1142 DEFINE_CALL_INTERFACE_DESCRIPTOR(FastCloneShallowObject); | 1150 DEFINE_CALL_INTERFACE_DESCRIPTOR(FastCloneShallowObject); |
1143 DEFINE_TURBOFAN_CODE_STUB(FastCloneShallowObject, TurboFanCodeStub); | 1151 DEFINE_TURBOFAN_CODE_STUB(FastCloneShallowObject, TurboFanCodeStub); |
1144 }; | 1152 }; |
1145 | 1153 |
1146 | 1154 |
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3194 #undef DEFINE_HYDROGEN_CODE_STUB | 3202 #undef DEFINE_HYDROGEN_CODE_STUB |
3195 #undef DEFINE_CODE_STUB | 3203 #undef DEFINE_CODE_STUB |
3196 #undef DEFINE_CODE_STUB_BASE | 3204 #undef DEFINE_CODE_STUB_BASE |
3197 | 3205 |
3198 extern Representation RepresentationFromType(Type* type); | 3206 extern Representation RepresentationFromType(Type* type); |
3199 | 3207 |
3200 } // namespace internal | 3208 } // namespace internal |
3201 } // namespace v8 | 3209 } // namespace v8 |
3202 | 3210 |
3203 #endif // V8_CODE_STUBS_H_ | 3211 #endif // V8_CODE_STUBS_H_ |
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