// Is this resource read in any of the regions?
    bool is_read;
    // Is this resource written in any of the regions?
    bool is_written;
    // Is this resource written in all of the regions?
    bool is_written_all;
    // The hoisted read used to replace region reads.
    Value hoisted_read;
    // the type of the data held by the resource.
    Type data_type;