!$acc host_data if (5)
!$acc end host_data 
!$acc host_data if (x==3)
!$acc host_data if (5) if_present
!$acc host_data use_device vector_length (a, b, c)
!$acc host_data use_device vector_length (a, b, c) if (5) if_present
!$acc host_data use_device vector_length (a, b, c, d) if (5) if_present
!$acc end host_data 
