aboutsummaryrefslogtreecommitdiff
path: root/libgomp/testsuite/libgomp.oacc-c-c++-common/kernels-loop-2.c
blob: 13e57bd987786482bea0afb39158054cc86ed652 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
/* { dg-do run } */
/* { dg-additional-options "-ftree-parallelize-loops=32" } */

#include <stdlib.h>

#define N (1024 * 512)
#define COUNTERTYPE unsigned int

int
main (void)
{
  unsigned int *__restrict a;
  unsigned int *__restrict b;
  unsigned int *__restrict c;

  a = (unsigned int *__restrict)malloc (N * sizeof (unsigned int));
  b = (unsigned int *__restrict)malloc (N * sizeof (unsigned int));
  c = (unsigned int *__restrict)malloc (N * sizeof (unsigned int));

#pragma acc kernels copyout (a[0:N])
  {
    for (COUNTERTYPE i = 0; i < N; i++)
      a[i] = i * 2;
  }

#pragma acc kernels copyout (b[0:N])
  {
    for (COUNTERTYPE i = 0; i < N; i++)
      b[i] = i * 4;
  }

#pragma acc kernels copyin (a[0:N], b[0:N]) copyout (c[0:N])
  {
    for (COUNTERTYPE ii = 0; ii < N; ii++)
      c[ii] = a[ii] + b[ii];
  }

  for (COUNTERTYPE i = 0; i < N; i++)
    if (c[i] != a[i] + b[i])
      abort ();

  free (a);
  free (b);
  free (c);

  return 0;
}