libgomp/testsuite/libgomp.oacc-c-c++-common/kernels-loop.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   for (COUNTERTYPE i = 0; i < N; i++)
  18     a[i] = i * 2;
  19
  20   for (COUNTERTYPE i = 0; i < N; i++)
  21     b[i] = i * 4;
  22
  23 #pragma acc kernels copyin (a[0:N], b[0:N]) copyout (c[0:N])
  24   {
  25     for (COUNTERTYPE ii = 0; ii < N; ii++)
  26       c[ii] = a[ii] + b[ii];
  27   }
  28
  29   for (COUNTERTYPE i = 0; i < N; i++)
  30     if (c[i] != a[i] + b[i])
  31       abort ();
  32
  33   free (a);
  34   free (b);
  35   free (c);
  36
  37   return 0;
  38 }