[interpreter] Add a register operand to ToNumber

src/interpreter/bytecode-array-builder.h

Index: src/interpreter/bytecode-array-builder.h
diff --git a/src/interpreter/bytecode-array-builder.h b/src/interpreter/bytecode-array-builder.h
index ca62ba6b6794f8ec826fb60858605cbd317107ca..fe0d67baa44314ebe1447b1529d5921eb5b0df00 100644
--- a/src/interpreter/bytecode-array-builder.h
+++ b/src/interpreter/bytecode-array-builder.h
@@ -215,7 +215,8 @@ class BytecodeArrayBuilder final : public ZoneObject {
   BytecodeArrayBuilder& CastAccumulatorToBoolean();
   BytecodeArrayBuilder& CastAccumulatorToJSObject();
   BytecodeArrayBuilder& CastAccumulatorToName();
-  BytecodeArrayBuilder& CastAccumulatorToNumber();
+  // Does not update the accumulator but stores to |out| instead.
+  BytecodeArrayBuilder& CastAccumulatorToNumber(Register out);
 
   // Flow Control.
   BytecodeArrayBuilder& Bind(BytecodeLabel* label);