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1 // Copyright 2014 the V8 project authors. All rights reserved. | 1 // Copyright 2014 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_MACHINE_TYPE_H_ | 5 #ifndef V8_MACHINE_TYPE_H_ |
6 #define V8_MACHINE_TYPE_H_ | 6 #define V8_MACHINE_TYPE_H_ |
7 | 7 |
8 #include <iosfwd> | 8 #include <iosfwd> |
9 | 9 |
10 #include "src/base/bits.h" | 10 #include "src/base/bits.h" |
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112 return MachineType(MachineRepresentation::kWord32, | 112 return MachineType(MachineRepresentation::kWord32, |
113 MachineSemantic::kUint32); | 113 MachineSemantic::kUint32); |
114 } | 114 } |
115 static MachineType Int64() { | 115 static MachineType Int64() { |
116 return MachineType(MachineRepresentation::kWord64, MachineSemantic::kInt64); | 116 return MachineType(MachineRepresentation::kWord64, MachineSemantic::kInt64); |
117 } | 117 } |
118 static MachineType Uint64() { | 118 static MachineType Uint64() { |
119 return MachineType(MachineRepresentation::kWord64, | 119 return MachineType(MachineRepresentation::kWord64, |
120 MachineSemantic::kUint64); | 120 MachineSemantic::kUint64); |
121 } | 121 } |
| 122 static MachineType TaggedPointer() { |
| 123 return MachineType(MachineRepresentation::kTaggedPointer, |
| 124 MachineSemantic::kAny); |
| 125 } |
| 126 static MachineType TaggedSigned() { |
| 127 return MachineType(MachineRepresentation::kTaggedSigned, |
| 128 MachineSemantic::kInt32); |
| 129 } |
122 static MachineType AnyTagged() { | 130 static MachineType AnyTagged() { |
123 return MachineType(MachineRepresentation::kTagged, MachineSemantic::kAny); | 131 return MachineType(MachineRepresentation::kTagged, MachineSemantic::kAny); |
124 } | 132 } |
125 static MachineType Bool() { | 133 static MachineType Bool() { |
126 return MachineType(MachineRepresentation::kBit, MachineSemantic::kBool); | 134 return MachineType(MachineRepresentation::kBit, MachineSemantic::kBool); |
127 } | 135 } |
128 static MachineType TaggedBool() { | 136 static MachineType TaggedBool() { |
129 return MachineType(MachineRepresentation::kTagged, MachineSemantic::kBool); | 137 return MachineType(MachineRepresentation::kTagged, MachineSemantic::kBool); |
130 } | 138 } |
131 static MachineType None() { | 139 static MachineType None() { |
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207 std::ostream& operator<<(std::ostream& os, MachineRepresentation rep); | 215 std::ostream& operator<<(std::ostream& os, MachineRepresentation rep); |
208 std::ostream& operator<<(std::ostream& os, MachineSemantic type); | 216 std::ostream& operator<<(std::ostream& os, MachineSemantic type); |
209 std::ostream& operator<<(std::ostream& os, MachineType type); | 217 std::ostream& operator<<(std::ostream& os, MachineType type); |
210 | 218 |
211 inline bool IsFloatingPoint(MachineRepresentation rep) { | 219 inline bool IsFloatingPoint(MachineRepresentation rep) { |
212 return rep == MachineRepresentation::kFloat32 || | 220 return rep == MachineRepresentation::kFloat32 || |
213 rep == MachineRepresentation::kFloat64 || | 221 rep == MachineRepresentation::kFloat64 || |
214 rep == MachineRepresentation::kSimd128; | 222 rep == MachineRepresentation::kSimd128; |
215 } | 223 } |
216 | 224 |
| 225 inline bool CanBeTaggedPointer(MachineRepresentation rep) { |
| 226 return rep == MachineRepresentation::kTagged || |
| 227 rep == MachineRepresentation::kTaggedPointer; |
| 228 } |
| 229 |
| 230 inline bool IsAnyTagged(MachineRepresentation rep) { |
| 231 return CanBeTaggedPointer(rep) || rep == MachineRepresentation::kTaggedSigned; |
| 232 } |
| 233 |
217 // Gets the log2 of the element size in bytes of the machine type. | 234 // Gets the log2 of the element size in bytes of the machine type. |
218 inline int ElementSizeLog2Of(MachineRepresentation rep) { | 235 inline int ElementSizeLog2Of(MachineRepresentation rep) { |
219 switch (rep) { | 236 switch (rep) { |
220 case MachineRepresentation::kBit: | 237 case MachineRepresentation::kBit: |
221 case MachineRepresentation::kWord8: | 238 case MachineRepresentation::kWord8: |
222 return 0; | 239 return 0; |
223 case MachineRepresentation::kWord16: | 240 case MachineRepresentation::kWord16: |
224 return 1; | 241 return 1; |
225 case MachineRepresentation::kWord32: | 242 case MachineRepresentation::kWord32: |
226 case MachineRepresentation::kFloat32: | 243 case MachineRepresentation::kFloat32: |
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240 UNREACHABLE(); | 257 UNREACHABLE(); |
241 return -1; | 258 return -1; |
242 } | 259 } |
243 | 260 |
244 typedef Signature<MachineType> MachineSignature; | 261 typedef Signature<MachineType> MachineSignature; |
245 | 262 |
246 } // namespace internal | 263 } // namespace internal |
247 } // namespace v8 | 264 } // namespace v8 |
248 | 265 |
249 #endif // V8_MACHINE_TYPE_H_ | 266 #endif // V8_MACHINE_TYPE_H_ |
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