[interpreter] Introduce binary op bytecodes for Smi operand.

src/interpreter/bytecodes.cc

Index: src/interpreter/bytecodes.cc
diff --git a/src/interpreter/bytecodes.cc b/src/interpreter/bytecodes.cc
index 543c9c5075effa0ee8c750d653b52b9e75e4bce7..825014e465613ecb0073f5511ae333931e481ec2 100644
--- a/src/interpreter/bytecodes.cc
+++ b/src/interpreter/bytecodes.cc
@@ -474,6 +474,11 @@ bool Bytecodes::IsLdarOrStar(Bytecode bytecode) {
 }
 
 // static
+bool Bytecodes::IsLdaSmiOrLdaZero(Bytecode bytecode) {
+  return bytecode == Bytecode::kLdaSmi || bytecode == Bytecode::kLdaZero;
+}
+
+// static
 bool Bytecodes::IsBytecodeWithScalableOperands(Bytecode bytecode) {
   switch (bytecode) {
 #define CASE(Name, ...)                              \