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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_OPERATOR_PROPERTIES_INL_H_ | 5 #ifndef V8_COMPILER_OPERATOR_PROPERTIES_INL_H_ |
6 #define V8_COMPILER_OPERATOR_PROPERTIES_INL_H_ | 6 #define V8_COMPILER_OPERATOR_PROPERTIES_INL_H_ |
7 | 7 |
8 #include "src/compiler/common-operator.h" | 8 #include "src/compiler/common-operator.h" |
9 #include "src/compiler/js-operator.h" | 9 #include "src/compiler/js-operator.h" |
10 #include "src/compiler/linkage.h" | 10 #include "src/compiler/linkage.h" |
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116 switch (op->opcode()) { | 116 switch (op->opcode()) { |
117 case IrOpcode::kPhi: | 117 case IrOpcode::kPhi: |
118 case IrOpcode::kEffectPhi: | 118 case IrOpcode::kEffectPhi: |
119 case IrOpcode::kLoad: | 119 case IrOpcode::kLoad: |
120 case IrOpcode::kLoadElement: | 120 case IrOpcode::kLoadElement: |
121 case IrOpcode::kLoadField: | 121 case IrOpcode::kLoadField: |
122 return 1; | 122 return 1; |
123 #define OPCODE_CASE(x) case IrOpcode::k##x: | 123 #define OPCODE_CASE(x) case IrOpcode::k##x: |
124 CONTROL_OP_LIST(OPCODE_CASE) | 124 CONTROL_OP_LIST(OPCODE_CASE) |
125 #undef OPCODE_CASE | 125 #undef OPCODE_CASE |
| 126 // Branch operator is special |
| 127 if (op->opcode() == IrOpcode::kBranch) return 1; |
126 // Control operators are Operator1<int>. | 128 // Control operators are Operator1<int>. |
127 return OpParameter<int>(op); | 129 return OpParameter<int>(op); |
128 default: | 130 default: |
129 // Operators that have write effects must have a control | 131 // Operators that have write effects must have a control |
130 // dependency. Effect dependencies only ensure the correct order of | 132 // dependency. Effect dependencies only ensure the correct order of |
131 // write/read operations without consideration of control flow. Without an | 133 // write/read operations without consideration of control flow. Without an |
132 // explicit control dependency writes can be float in the schedule too | 134 // explicit control dependency writes can be float in the schedule too |
133 // early along a path that shouldn't generate a side-effect. | 135 // early along a path that shouldn't generate a side-effect. |
134 return op->HasProperty(Operator::kNoWrite) ? 0 : 1; | 136 return op->HasProperty(Operator::kNoWrite) ? 0 : 1; |
135 } | 137 } |
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181 opcode == IrOpcode::kDead || opcode == IrOpcode::kLoop || | 183 opcode == IrOpcode::kDead || opcode == IrOpcode::kLoop || |
182 opcode == IrOpcode::kMerge || opcode == IrOpcode::kIfTrue || | 184 opcode == IrOpcode::kMerge || opcode == IrOpcode::kIfTrue || |
183 opcode == IrOpcode::kIfFalse; | 185 opcode == IrOpcode::kIfFalse; |
184 } | 186 } |
185 | 187 |
186 } // namespace compiler | 188 } // namespace compiler |
187 } // namespace internal | 189 } // namespace internal |
188 } // namespace v8 | 190 } // namespace v8 |
189 | 191 |
190 #endif // V8_COMPILER_OPERATOR_PROPERTIES_INL_H_ | 192 #endif // V8_COMPILER_OPERATOR_PROPERTIES_INL_H_ |
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