[Interpreter] Add support for JS runtime calls.

src/interpreter/bytecodes.cc

Index: src/interpreter/bytecodes.cc
diff --git a/src/interpreter/bytecodes.cc b/src/interpreter/bytecodes.cc
index 8b99f4fb1ce97bc46763a45d71e85117ae015a86..0e06e201dfa66b42a403392ebd49088fad9daf5d 100644
--- a/src/interpreter/bytecodes.cc
+++ b/src/interpreter/bytecodes.cc
@@ -231,7 +231,8 @@ std::ostream& Bytecodes::Decode(std::ostream& os, const uint8_t* bytecode_start,
       case interpreter::OperandType::kImm8:
         os << "#" << static_cast<int>(static_cast<int8_t>(*operand_start));
         break;
-      case interpreter::OperandType::kReg8: {
+      case interpreter::OperandType::kReg8:
+      case interpreter::OperandType::kMaybeReg8: {
         Register reg = Register::FromOperand(*operand_start);
         if (reg.is_function_context()) {
           os << "<context>";