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 3 // found in the LICENSE file. 4 5 #ifndef V8_COMPILER_OPERATOR_PROPERTIES_H_ 6 #define V8_COMPILER_OPERATOR_PROPERTIES_H_ 7 8 #include "src/base/macros.h" 9 #include "src/common/globals.h" 10 11 namespace v8 { 12 namespace internal { 13 namespace compiler { 14 15 // Forward declarations. 16 class Operator; 17 18 class V8_EXPORT_PRIVATE OperatorProperties final { 19 public: 20 OperatorProperties(const OperatorProperties&) = delete; 21 OperatorProperties& operator=(const OperatorProperties&) = delete; 22 23 static bool HasContextInput(const Operator* op); GetContextInputCount(const Operator * op)24 static int GetContextInputCount(const Operator* op) { 25 return HasContextInput(op) ? 1 : 0; 26 } 27 28 static bool NeedsExactContext(const Operator* op); 29 30 static bool HasFrameStateInput(const Operator* op); GetFrameStateInputCount(const Operator * op)31 static int GetFrameStateInputCount(const Operator* op) { 32 return HasFrameStateInput(op) ? 1 : 0; 33 } 34 35 static int GetTotalInputCount(const Operator* op); 36 37 static bool IsBasicBlockBegin(const Operator* op); 38 }; 39 40 } // namespace compiler 41 } // namespace internal 42 } // namespace v8 43 44 #endif // V8_COMPILER_OPERATOR_PROPERTIES_H_ 45