[interpreter] Add a register operand to ToNumber

src/interpreter/interpreter.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_INTERPRETER_H_
 #define V8_INTERPRETER_INTERPRETER_H_
 
 // Clients of this interface shouldn't depend on lots of interpreter internals.
 // Do not include anything from src/interpreter other than
 // src/interpreter/bytecodes.h here!
@@ skipping 61 matching lines @@
 
   // Generates code to perform the binary operation via |Generator|.
   template <class Generator>
   void DoBinaryOp(InterpreterAssembler* assembler);
 
   // Generates code to perform the binary operation via |Generator| using
   // an immediate value rather the accumulator as the rhs operand.
   template <class Generator>
   void DoBinaryOpWithImmediate(InterpreterAssembler* assembler);
 
-  // Generates code to perform the unary operation via |callable|.
+  // Generates code to perform the unary operation via |callable| and stores
+  // the result to the accumulator.
   void DoUnaryOp(Callable callable, InterpreterAssembler* assembler);
 
   // Generates code to perform the unary operation via |Generator|.
   template <class Generator>
   void DoUnaryOp(InterpreterAssembler* assembler);
 
   // Generates code to perform the comparison operation associated with
   // |compare_op|.
   void DoCompareOp(Token::Value compare_op, InterpreterAssembler* assembler);
 
@@ skipping 52 matching lines @@
 
   // Generates code to prepare the result for ForInPrepare. Cache data
   // are placed into the consecutive series of registers starting at
   // |output_register|.
   void BuildForInPrepareResult(compiler::Node* output_register,
                                compiler::Node* cache_type,
                                compiler::Node* cache_array,
                                compiler::Node* cache_length,
                                InterpreterAssembler* assembler);
 
+  // Generates code to perform the unary operation via |callable|.
+  compiler::Node* BuildUnaryOp(Callable callable,
+                               InterpreterAssembler* assembler);
+
   uintptr_t GetDispatchCounter(Bytecode from, Bytecode to) const;
 
   // Get dispatch table index of bytecode.
   static size_t GetDispatchTableIndex(Bytecode bytecode,
                                       OperandScale operand_scale);
 
   bool IsDispatchTableInitialized();
 
   static const int kNumberOfWideVariants = 3;
   static const int kDispatchTableSize = kNumberOfWideVariants * (kMaxUInt8 + 1);
   static const int kNumberOfBytecodes = static_cast<int>(Bytecode::kLast) + 1;
 
   Isolate* isolate_;
   Address dispatch_table_[kDispatchTableSize];
   v8::base::SmartArrayPointer<uintptr_t> bytecode_dispatch_counters_table_;
 
   DISALLOW_COPY_AND_ASSIGN(Interpreter);
 };
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_INTERPRETER_INTERPRETER_H_