libgomp/testsuite/libgomp.oacc-c-c++-common/kernels-loop-data-enter-exit.c

   1 #include <stdlib.h>
   2
   3 #define N (1024 * 512)
   4 #define COUNTERTYPE unsigned int
   5
   6 int
   7 main (void)
   8 {
   9   unsigned int *__restrict a;
  10   unsigned int *__restrict b;
  11   unsigned int *__restrict c;
  12
  13   a = (unsigned int *__restrict)malloc (N * sizeof (unsigned int));
  14   b = (unsigned int *__restrict)malloc (N * sizeof (unsigned int));
  15   c = (unsigned int *__restrict)malloc (N * sizeof (unsigned int));
  16
  17 #pragma acc enter data create (a[0:N], b[0:N], c[0:N])
  18
  19 #pragma acc kernels present (a[0:N])
  20   {
  21     for (COUNTERTYPE i = 0; i < N; i++)
  22       a[i] = i * 2;
  23   }
  24
  25 #pragma acc kernels present (b[0:N])
  26   {
  27     for (COUNTERTYPE i = 0; i < N; i++)
  28       b[i] = i * 4;
  29   }
  30
  31 #pragma acc kernels present (a[0:N], b[0:N], c[0:N])
  32   {
  33     for (COUNTERTYPE ii = 0; ii < N; ii++)
  34       c[ii] = a[ii] + b[ii];
  35   }
  36
  37 #pragma acc exit data copyout (a[0:N], b[0:N], c[0:N])
  38
  39   for (COUNTERTYPE i = 0; i < N; i++)
  40     if (c[i] != a[i] + b[i])
  41       abort ();
  42
  43   free (a);
  44   free (b);
  45   free (c);
  46
  47   return 0;
  48 }