message: Compile add instruction
diff: @@ -205,9 +205,20 @@ impl<M: Module> Translator<M> {
  _ => todo!(),
  }
  },
  + bril::Instruction::Value { args, dest, funcs: _, labels: _, op, op_type: _ } => {
  + match op {
  + bril::ValueOps::Add => {
  + let lhs = builder.use_var(*vars.get(&args[0]).unwrap());
  + let rhs = builder.use_var(*vars.get(&args[1]).unwrap());
  + let res = builder.ins().iadd(lhs, rhs);
  + let dest_var = vars.get(dest).unwrap();
  + builder.def_var(*dest_var, res);
  + },
  _ => todo!(),
  }
  },
  + }
  + },
  _ => todo!(),
  }
  }
  