DISPATCH(NEXT_OP) {
            OP(no_op):
                goto NEXT;
            OP(const_i8):
            OP(const_i16):
            OP(const_i32):
                MVM_exception_throw_adhoc(tc, "const_iX NYI");
            OP(const_i64):
                GET_REG(cur_op, 0).i64 = MVM_BC_get_I64(cur_op, 2);
                cur_op += 10;
                goto NEXT;
        }