[interpreter] Introduce fused bytecodes for common sequences.

src/interpreter/bytecodes.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_BYTECODES_H_
 #define V8_INTERPRETER_BYTECODES_H_
 
 #include <iosfwd>
 
 // Clients of this interface shouldn't depend on lots of interpreter internals.
@@ skipping 70 matching lines @@
   /* Loading the accumulator */                                               \
   V(LdaZero, AccumulatorUse::kWrite)                                          \
   V(LdaSmi, AccumulatorUse::kWrite, OperandType::kImm)                        \
   V(LdaUndefined, AccumulatorUse::kWrite)                                     \
   V(LdaNull, AccumulatorUse::kWrite)                                          \
   V(LdaTheHole, AccumulatorUse::kWrite)                                       \
   V(LdaTrue, AccumulatorUse::kWrite)                                          \
   V(LdaFalse, AccumulatorUse::kWrite)                                         \
   V(LdaConstant, AccumulatorUse::kWrite, OperandType::kIdx)                   \
                                                                               \
+  /* Loading registers */                                                     \
+  V(LdrUndefined, AccumulatorUse::kNone, OperandType::kRegOut)                \
+                                                                              \
   /* Globals */                                                               \
   V(LdaGlobal, AccumulatorUse::kWrite, OperandType::kIdx, OperandType::kIdx)  \
+  V(LdrGlobal, AccumulatorUse::kNone, OperandType::kIdx, OperandType::kIdx,   \
+    OperandType::kRegOut)                                                     \
   V(LdaGlobalInsideTypeof, AccumulatorUse::kWrite, OperandType::kIdx,         \
     OperandType::kIdx)                                                        \
   V(StaGlobalSloppy, AccumulatorUse::kRead, OperandType::kIdx,                \
     OperandType::kIdx)                                                        \
   V(StaGlobalStrict, AccumulatorUse::kRead, OperandType::kIdx,                \
     OperandType::kIdx)                                                        \
                                                                               \
   /* Context operations */                                                    \
   V(PushContext, AccumulatorUse::kRead, OperandType::kRegOut)                 \
   V(PopContext, AccumulatorUse::kNone, OperandType::kReg)                     \
   V(LdaContextSlot, AccumulatorUse::kWrite, OperandType::kReg,                \
     OperandType::kIdx)                                                        \
+  V(LdrContextSlot, AccumulatorUse::kNone, OperandType::kReg,                 \
+    OperandType::kIdx, OperandType::kRegOut)                                  \
   V(StaContextSlot, AccumulatorUse::kRead, OperandType::kReg,                 \
     OperandType::kIdx)                                                        \
                                                                               \
   /* Load-Store lookup slots */                                               \
   V(LdaLookupSlot, AccumulatorUse::kWrite, OperandType::kIdx)                 \
   V(LdaLookupSlotInsideTypeof, AccumulatorUse::kWrite, OperandType::kIdx)     \
   V(StaLookupSlotSloppy, AccumulatorUse::kReadWrite, OperandType::kIdx)       \
   V(StaLookupSlotStrict, AccumulatorUse::kReadWrite, OperandType::kIdx)       \
                                                                               \
   /* Register-accumulator transfers */                                        \
   V(Ldar, AccumulatorUse::kWrite, OperandType::kReg)                          \
   V(Star, AccumulatorUse::kRead, OperandType::kRegOut)                        \
                                                                               \
   /* Register-register transfers */                                           \
   V(Mov, AccumulatorUse::kNone, OperandType::kReg, OperandType::kRegOut)      \
                                                                               \
   /* LoadIC operations */                                                     \
   V(LoadIC, AccumulatorUse::kWrite, OperandType::kReg, OperandType::kIdx,     \
     OperandType::kIdx)                                                        \
+  V(LdrNamedProperty, AccumulatorUse::kNone, OperandType::kReg,               \
+    OperandType::kIdx, OperandType::kIdx, OperandType::kRegOut)               \
   V(KeyedLoadIC, AccumulatorUse::kReadWrite, OperandType::kReg,               \
     OperandType::kIdx)                                                        \
+  V(LdrKeyedProperty, AccumulatorUse::kRead, OperandType::kReg,               \
+    OperandType::kIdx, OperandType::kRegOut)                                  \
                                                                               \
   /* StoreIC operations */                                                    \
   V(StoreICSloppy, AccumulatorUse::kRead, OperandType::kReg,                  \
     OperandType::kIdx, OperandType::kIdx)                                     \
   V(StoreICStrict, AccumulatorUse::kRead, OperandType::kReg,                  \
     OperandType::kIdx, OperandType::kIdx)                                     \
   V(KeyedStoreICSloppy, AccumulatorUse::kRead, OperandType::kReg,             \
     OperandType::kReg, OperandType::kIdx)                                     \
   V(KeyedStoreICStrict, AccumulatorUse::kRead, OperandType::kReg,             \
     OperandType::kReg, OperandType::kIdx)                                     \
@@ skipping 299 matching lines @@
   // Returns string representation of |operand_type|.
   static const char* OperandTypeToString(OperandType operand_type);
 
   // Returns string representation of |operand_scale|.
   static const char* OperandScaleToString(OperandScale operand_scale);
 
   // Returns string representation of |operand_size|.
   static const char* OperandSizeToString(OperandSize operand_size);
 
   // Returns byte value of bytecode.
-  static uint8_t ToByte(Bytecode bytecode);
+  static uint8_t ToByte(Bytecode bytecode) {
+    DCHECK_LE(bytecode, Bytecode::kLast);
+    return static_cast<uint8_t>(bytecode);
+  }
 
   // Returns bytecode for |value|.
   static Bytecode FromByte(uint8_t value);
 
   // Returns the number of operands expected by |bytecode|.
   static int NumberOfOperands(Bytecode bytecode);
 
   // Returns the number of register operands expected by |bytecode|.
   static int NumberOfRegisterOperands(Bytecode bytecode);
 
@@ skipping 193 matching lines @@
 std::ostream& operator<<(std::ostream& os, const AccumulatorUse& use);
 std::ostream& operator<<(std::ostream& os, const OperandScale& operand_scale);
 std::ostream& operator<<(std::ostream& os, const OperandSize& operand_size);
 std::ostream& operator<<(std::ostream& os, const OperandType& operand_type);
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_INTERPRETER_BYTECODES_H_