[interpreter] Wide register support.

src/interpreter/bytecode-traits.h

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_INTERPRETER_BYTECODE_TRAITS_H_
 #define V8_INTERPRETER_BYTECODE_TRAITS_H_
 
 #include "src/interpreter/bytecodes.h"
 
 namespace v8 {
@@ skipping 10 matching lines @@
 
 #define DECLARE_OPERAND_SIZE(Name, Size)             \
   template <>                                        \
   struct OperandTraits<OperandType::k##Name> {       \
     static const OperandSize kSizeType = Size;       \
     static const int kSize = static_cast<int>(Size); \
   };
 OPERAND_TYPE_LIST(DECLARE_OPERAND_SIZE)
 #undef DECLARE_OPERAND_SIZE
 
+template <OperandType>
+struct RegisterOperandTraits {
+  static const int kIsRegisterOperand = 0;
+};
+
+#define DECLARE_REGISTER_OPERAND(Name, _)              \
+  template <>                                          \
+  struct RegisterOperandTraits<OperandType::k##Name> { \
+    static const int kIsRegisterOperand = 1;           \
+  };
+REGISTER_OPERAND_TYPE_LIST(DECLARE_REGISTER_OPERAND)
+#undef DECLARE_REGISTER_OPERAND
 
 template <OperandType... Args>
 struct BytecodeTraits {};
 
 template <OperandType operand_0, OperandType operand_1, OperandType operand_2,
           OperandType operand_3>
 struct BytecodeTraits<operand_0, operand_1, operand_2, operand_3,
                       OPERAND_TERM> {
   static OperandType GetOperandType(int i) {
     DCHECK(0 <= i && i < kOperandCount);
@@ skipping 15 matching lines @@
   static inline int GetOperandOffset(int i) {
     DCHECK(0 <= i && i < kOperandCount);
     const int kOffset0 = 1;
     const int kOffset1 = kOffset0 + OperandTraits<operand_0>::kSize;
     const int kOffset2 = kOffset1 + OperandTraits<operand_1>::kSize;
     const int kOffset3 = kOffset2 + OperandTraits<operand_2>::kSize;
     const int kOperandOffsets[] = {kOffset0, kOffset1, kOffset2, kOffset3};
     return kOperandOffsets[i];
   }
 
+  template <OperandType ot>
+  static inline bool HasAnyOperandsOfType() {
+    return operand_0 == ot || operand_1 == ot || operand_2 == ot ||
+           operand_3 == ot;
+  }
+
   static const int kOperandCount = 4;
+  static const int kRegisterOperandCount =
+      RegisterOperandTraits<operand_0>::kIsRegisterOperand +
+      RegisterOperandTraits<operand_1>::kIsRegisterOperand +
+      RegisterOperandTraits<operand_2>::kIsRegisterOperand +
+      RegisterOperandTraits<operand_3>::kIsRegisterOperand;
   static const int kSize =
       1 + OperandTraits<operand_0>::kSize + OperandTraits<operand_1>::kSize +
       OperandTraits<operand_2>::kSize + OperandTraits<operand_3>::kSize;
 };
 
-
 template <OperandType operand_0, OperandType operand_1, OperandType operand_2>
 struct BytecodeTraits<operand_0, operand_1, operand_2, OPERAND_TERM> {
   static inline OperandType GetOperandType(int i) {
     DCHECK(0 <= i && i <= 2);
     const OperandType kOperands[] = {operand_0, operand_1, operand_2};
     return kOperands[i];
   }
 
   static inline OperandSize GetOperandSize(int i) {
     DCHECK(0 <= i && i < kOperandCount);
     const OperandSize kOperandSizes[] =
         {OperandTraits<operand_0>::kSizeType,
          OperandTraits<operand_1>::kSizeType,
          OperandTraits<operand_2>::kSizeType};
     return kOperandSizes[i];
   }
 
   static inline int GetOperandOffset(int i) {
     DCHECK(0 <= i && i < kOperandCount);
     const int kOffset0 = 1;
     const int kOffset1 = kOffset0 + OperandTraits<operand_0>::kSize;
     const int kOffset2 = kOffset1 + OperandTraits<operand_1>::kSize;
     const int kOperandOffsets[] = {kOffset0, kOffset1, kOffset2};
     return kOperandOffsets[i];
   }
 
+  template <OperandType ot>
+  static inline bool HasAnyOperandsOfType() {
+    return operand_0 == ot || operand_1 == ot || operand_2 == ot;
+  }
+
   static const int kOperandCount = 3;
+  static const int kRegisterOperandCount =
+      RegisterOperandTraits<operand_0>::kIsRegisterOperand +
+      RegisterOperandTraits<operand_1>::kIsRegisterOperand +
+      RegisterOperandTraits<operand_2>::kIsRegisterOperand;
   static const int kSize =
       1 + OperandTraits<operand_0>::kSize + OperandTraits<operand_1>::kSize +
       OperandTraits<operand_2>::kSize;
 };
 
 template <OperandType operand_0, OperandType operand_1>
 struct BytecodeTraits<operand_0, operand_1, OPERAND_TERM> {
   static inline OperandType GetOperandType(int i) {
     DCHECK(0 <= i && i < kOperandCount);
     const OperandType kOperands[] = {operand_0, operand_1};
     return kOperands[i];
   }
 
   static inline OperandSize GetOperandSize(int i) {
     DCHECK(0 <= i && i < kOperandCount);
     const OperandSize kOperandSizes[] =
         {OperandTraits<operand_0>::kSizeType,
          OperandTraits<operand_1>::kSizeType};
     return kOperandSizes[i];
   }
 
   static inline int GetOperandOffset(int i) {
     DCHECK(0 <= i && i < kOperandCount);
     const int kOffset0 = 1;
     const int kOffset1 = kOffset0 + OperandTraits<operand_0>::kSize;
     const int kOperandOffsets[] = {kOffset0, kOffset1};
     return kOperandOffsets[i];
   }
 
+  template <OperandType ot>
+  static inline bool HasAnyOperandsOfType() {
+    return operand_0 == ot || operand_1 == ot;
+  }
+
   static const int kOperandCount = 2;
+  static const int kRegisterOperandCount =
+      RegisterOperandTraits<operand_0>::kIsRegisterOperand +
+      RegisterOperandTraits<operand_1>::kIsRegisterOperand;
   static const int kSize =
       1 + OperandTraits<operand_0>::kSize + OperandTraits<operand_1>::kSize;
 };
 
 template <OperandType operand_0>
 struct BytecodeTraits<operand_0, OPERAND_TERM> {
   static inline OperandType GetOperandType(int i) {
     DCHECK(i == 0);
     return operand_0;
   }
 
   static inline OperandSize GetOperandSize(int i) {
     DCHECK(i == 0);
     return OperandTraits<operand_0>::kSizeType;
   }
 
   static inline int GetOperandOffset(int i) {
     DCHECK(i == 0);
     return 1;
   }
 
+  template <OperandType ot>
+  static inline bool HasAnyOperandsOfType() {
+    return operand_0 == ot;
+  }
+
   static const int kOperandCount = 1;
+  static const int kRegisterOperandCount =
+      RegisterOperandTraits<operand_0>::kIsRegisterOperand;
   static const int kSize = 1 + OperandTraits<operand_0>::kSize;
 };
 
 template <>
 struct BytecodeTraits<OperandType::kNone, OPERAND_TERM> {
   static inline OperandType GetOperandType(int i) {
     UNREACHABLE();
     return OperandType::kNone;
   }
 
   static inline OperandSize GetOperandSize(int i) {
     UNREACHABLE();
     return OperandSize::kNone;
   }
 
   static inline int GetOperandOffset(int i) {
     UNREACHABLE();
     return 1;
   }
 
+  template <OperandType ot>
+  static inline bool HasAnyOperandsOfType() {
+    return false;
+  }
+
   static const int kOperandCount = 0;
+  static const int kRegisterOperandCount = 0;
   static const int kSize = 1 + OperandTraits<OperandType::kNone>::kSize;
 };
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_INTERPRETER_BYTECODE_TRAITS_H_