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1 // Copyright 2013 the V8 project authors. All rights reserved. | 1 // Copyright 2013 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_COMPILER_MACHINE_OPERATOR_H_ | 5 #ifndef V8_COMPILER_MACHINE_OPERATOR_H_ |
6 #define V8_COMPILER_MACHINE_OPERATOR_H_ | 6 #define V8_COMPILER_MACHINE_OPERATOR_H_ |
7 | 7 |
8 #include "src/base/flags.h" | 8 #include "src/base/flags.h" |
9 #include "src/machine-type.h" | 9 #include "src/machine-type.h" |
10 | 10 |
11 namespace v8 { | 11 namespace v8 { |
12 namespace internal { | 12 namespace internal { |
13 namespace compiler { | 13 namespace compiler { |
14 | 14 |
15 // Forward declarations. | 15 // Forward declarations. |
16 struct MachineOperatorGlobalCache; | 16 struct MachineOperatorGlobalCache; |
17 class Operator; | 17 class Operator; |
18 | 18 |
19 | 19 |
20 // For operators that are not supported on all platforms. | 20 // For operators that are not supported on all platforms. |
21 class OptionalOperator final { | 21 class OptionalOperator final { |
22 public: | 22 public: |
23 explicit OptionalOperator(const Operator* op) : op_(op) {} | 23 OptionalOperator(bool supported, const Operator* op) |
| 24 : supported_(supported), op_(op) {} |
24 | 25 |
25 bool IsSupported() const { return op_ != nullptr; } | 26 bool IsSupported() const { return supported_; } |
| 27 // Gets the operator only if it is supported. |
26 const Operator* op() const { | 28 const Operator* op() const { |
27 DCHECK_NOT_NULL(op_); | 29 DCHECK(supported_); |
28 return op_; | 30 return op_; |
29 } | 31 } |
| 32 // Always gets the operator, even for unsupported operators. This is useful to |
| 33 // use the operator as a placeholder in a graph, for instance. |
| 34 const Operator* placeholder() const { return op_; } |
30 | 35 |
31 private: | 36 private: |
| 37 bool supported_; |
32 const Operator* const op_; | 38 const Operator* const op_; |
33 }; | 39 }; |
34 | 40 |
35 | 41 |
36 // A Load needs a MachineType. | 42 // A Load needs a MachineType. |
37 typedef MachineType LoadRepresentation; | 43 typedef MachineType LoadRepresentation; |
38 | 44 |
39 LoadRepresentation LoadRepresentationOf(Operator const*); | 45 LoadRepresentation LoadRepresentationOf(Operator const*); |
40 | 46 |
41 // A Store needs a MachineType and a WriteBarrierKind in order to emit the | 47 // A Store needs a MachineType and a WriteBarrierKind in order to emit the |
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202 const Operator* Word32Xor(); | 208 const Operator* Word32Xor(); |
203 const Operator* Word32Shl(); | 209 const Operator* Word32Shl(); |
204 const Operator* Word32Shr(); | 210 const Operator* Word32Shr(); |
205 const Operator* Word32Sar(); | 211 const Operator* Word32Sar(); |
206 const Operator* Word32Ror(); | 212 const Operator* Word32Ror(); |
207 const Operator* Word32Equal(); | 213 const Operator* Word32Equal(); |
208 const Operator* Word32Clz(); | 214 const Operator* Word32Clz(); |
209 const OptionalOperator Word32Ctz(); | 215 const OptionalOperator Word32Ctz(); |
210 const OptionalOperator Word32Popcnt(); | 216 const OptionalOperator Word32Popcnt(); |
211 const OptionalOperator Word64Popcnt(); | 217 const OptionalOperator Word64Popcnt(); |
212 const Operator* Word64PopcntPlaceholder(); | |
213 const OptionalOperator Word32ReverseBits(); | 218 const OptionalOperator Word32ReverseBits(); |
214 const OptionalOperator Word64ReverseBits(); | 219 const OptionalOperator Word64ReverseBits(); |
215 bool Word32ShiftIsSafe() const { return flags_ & kWord32ShiftIsSafe; } | 220 bool Word32ShiftIsSafe() const { return flags_ & kWord32ShiftIsSafe; } |
216 | 221 |
217 const Operator* Word64And(); | 222 const Operator* Word64And(); |
218 const Operator* Word64Or(); | 223 const Operator* Word64Or(); |
219 const Operator* Word64Xor(); | 224 const Operator* Word64Xor(); |
220 const Operator* Word64Shl(); | 225 const Operator* Word64Shl(); |
221 const Operator* Word64Shr(); | 226 const Operator* Word64Shr(); |
222 const Operator* Word64Sar(); | 227 const Operator* Word64Sar(); |
223 const Operator* Word64Ror(); | 228 const Operator* Word64Ror(); |
224 const Operator* Word64Clz(); | 229 const Operator* Word64Clz(); |
225 const OptionalOperator Word64Ctz(); | 230 const OptionalOperator Word64Ctz(); |
226 const Operator* Word64CtzPlaceholder(); | |
227 const Operator* Word64Equal(); | 231 const Operator* Word64Equal(); |
228 | 232 |
229 const Operator* Int32PairAdd(); | 233 const Operator* Int32PairAdd(); |
230 const Operator* Int32PairSub(); | 234 const Operator* Int32PairSub(); |
231 const Operator* Int32PairMul(); | 235 const Operator* Int32PairMul(); |
232 const Operator* Word32PairShl(); | 236 const Operator* Word32PairShl(); |
233 const Operator* Word32PairShr(); | 237 const Operator* Word32PairShr(); |
234 const Operator* Word32PairSar(); | 238 const Operator* Word32PairSar(); |
235 | 239 |
236 const Operator* Int32Add(); | 240 const Operator* Int32Add(); |
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670 }; | 674 }; |
671 | 675 |
672 | 676 |
673 DEFINE_OPERATORS_FOR_FLAGS(MachineOperatorBuilder::Flags) | 677 DEFINE_OPERATORS_FOR_FLAGS(MachineOperatorBuilder::Flags) |
674 | 678 |
675 } // namespace compiler | 679 } // namespace compiler |
676 } // namespace internal | 680 } // namespace internal |
677 } // namespace v8 | 681 } // namespace v8 |
678 | 682 |
679 #endif // V8_COMPILER_MACHINE_OPERATOR_H_ | 683 #endif // V8_COMPILER_MACHINE_OPERATOR_H_ |
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