[interpreter] Add a register operand to ToNumber

src/interpreter/interpreter.h

Index: src/interpreter/interpreter.h
diff --git a/src/interpreter/interpreter.h b/src/interpreter/interpreter.h
index 92e17e06bc6a33722009ab8a4e33ca59400a1565..f9a6fa52b0405f05149af44a1924ff2c093189ae 100644
--- a/src/interpreter/interpreter.h
+++ b/src/interpreter/interpreter.h
@@ -79,7 +79,8 @@ class Interpreter {
   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|.
@@ -152,6 +153,10 @@ class Interpreter {
                                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.