gcc/gimplify.c b/gcc/gimplify.c

         - Add new enum for use_device clause handling to gimplify_omp_var_data.
         - Add new enum for host_data regions to omp_region_type.
         - Move handling of use_device clause in gimplify_scan_omp_clauses().
         - Add new functions gimplify_host_data() and gimplify_host_data_1().
         - Add handling of host_data to gimplify_expr().

     gcc/omp-builtins.def b/gcc/omp-builtins.def

         - Add builtin for GOACC_deviceptr().