message: Seems there are many limited in ternary OpStore
diff: @@ -170,7 +170,7 @@ impl MOpcode {
  MOpcode::OpLsr => ("OpLsr".to_owned(), MArity::Binary),
  MOpcode::OpIf => ("OpIf".to_owned(), MArity::Unary),
  MOpcode::OpLoad => ("OpLoad".to_owned(), MArity::Binary),
  - MOpcode::OpStore => ("OpStore".to_owned(), MArity::Ternary),
  + MOpcode::OpStore => ("OpStore".to_owned(), MArity::Binary),
  MOpcode::OpNarrow(_) => ("OpNarrow".to_owned(), MArity::Unary),
  MOpcode::OpWiden(_) => ("OpWiden".to_owned(), MArity::Unary),
  MOpcode::OpJmp => ("OpJmp".to_owned(), MArity::Unary),
  