[interpreter] Add a register operand to ToNumber

src/interpreter/interpreter.cc

Index: src/interpreter/interpreter.cc
diff --git a/src/interpreter/interpreter.cc b/src/interpreter/interpreter.cc
index b461264c22863fcf3c73c3768da8ad0d43696e82..a6c89851b3a290ac2eec307eca60413bfc5bf67b 100644
--- a/src/interpreter/interpreter.cc
+++ b/src/interpreter/interpreter.cc
@@ -997,13 +997,17 @@ void Interpreter::DoShiftRightSmi(InterpreterAssembler* assembler) {
   __ Dispatch();
 }
 
-void Interpreter::DoUnaryOp(Callable callable,
-                            InterpreterAssembler* assembler) {
+Node* Interpreter::BuildUnaryOp(Callable callable,
+                                InterpreterAssembler* assembler) {
   Node* target = __ HeapConstant(callable.code());
   Node* accumulator = __ GetAccumulator();
   Node* context = __ GetContext();
-  Node* result =
-      __ CallStub(callable.descriptor(), target, context, accumulator);
+  return __ CallStub(callable.descriptor(), target, context, accumulator);
+}
+
+void Interpreter::DoUnaryOp(Callable callable,
+                            InterpreterAssembler* assembler) {
+  Node* result = BuildUnaryOp(callable, assembler);
   __ SetAccumulator(result);
   __ Dispatch();
 }
@@ -1028,7 +1032,9 @@ void Interpreter::DoToName(InterpreterAssembler* assembler) {
 //
 // Cast the object referenced by the accumulator to a number.
 void Interpreter::DoToNumber(InterpreterAssembler* assembler) {
-  DoUnaryOp(CodeFactory::ToNumber(isolate_), assembler);
+  Node* result = BuildUnaryOp(CodeFactory::ToNumber(isolate_), assembler);
+  __ StoreRegister(result, __ BytecodeOperandReg(0));
+  __ Dispatch();
 }
 
 // ToObject