offload/test/mapping/target_implicit_partial_map.c

   1 // RUN: %libomptarget-compile-generic
   2 // RUN: %libomptarget-run-generic 2>&1 \
   3 // RUN: | %fcheck-generic
   4
   5 // END.
   6
   7 #include <omp.h>
   8 #include <stdio.h>
   9
  10 int main() {
  11   int arr[100];
  12
  13 #pragma omp target data map(alloc : arr[50 : 2]) // partially mapped
  14   {
  15     // CHECK: arr[50] must present: 1
  16     fprintf(stderr, "arr[50] must present: %d\n",
  17             omp_target_is_present(&arr[50], omp_get_default_device()));
  18
  19     // CHECK: arr[0] should not present: 0
  20     fprintf(stderr, "arr[0] should not present: %d\n",
  21             omp_target_is_present(&arr[0], omp_get_default_device()));
  22
  23     // CHECK: arr[49] should not present: 0
  24     fprintf(stderr, "arr[49] should not present: %d\n",
  25             omp_target_is_present(&arr[49], omp_get_default_device()));
  26
  27 #pragma omp target // would implicitly map with full size but already present
  28     {
  29       arr[50] = 5;
  30       arr[51] = 6;
  31     } // must treat as present (dec ref count) even though full size not present
  32   }   // wouldn't delete if previous ref count dec didn't happen
  33
  34   // CHECK: arr[50] still present: 0
  35   fprintf(stderr, "arr[50] still present: %d\n",
  36           omp_target_is_present(&arr[50], omp_get_default_device()));
  37
  38   return 0;
  39 }