libgomp/testsuite/libgomp.c/pr30494.c

   1 /* PR middle-end/30494 */
   2 /* { dg-do run } */
   3
   4 #include <omp.h>
   5
   6 int errors;
   7
   8 int
   9 check (int m, int i, int *v, int *w)
  10 {
  11   int j;
  12   int n = omp_get_thread_num ();
  13   for (j = 0; j < m; j++)
  14     if (v[j] != j + n)
  15       #pragma omp atomic
  16         errors += 1;
  17   for (j = 0; j < m * 3 + i; j++)
  18     if (w[j] != j + 10 + n)
  19       #pragma omp atomic
  20         errors += 1;
  21 }
  22
  23 int
  24 foo (int n, int m)
  25 {
  26   int i;
  27 #pragma omp for
  28   for (i = 0; i < 6; i++)
  29     {
  30       int v[n], w[n * 3 + i], j;
  31       for (j = 0; j < n; j++)
  32         v[j] = j + omp_get_thread_num ();
  33       for (j = 0; j < n * 3 + i; j++)
  34         w[j] = j + 10 + omp_get_thread_num ();
  35       check (m, i, v, w);
  36     }
  37   return 0;
  38 }
  39
  40 int
  41 bar (int n, int m)
  42 {
  43   int i;
  44 #pragma omp parallel for num_threads (4)
  45   for (i = 0; i < 6; i++)
  46     {
  47       int v[n], w[n * 3 + i], j;
  48       for (j = 0; j < n; j++)
  49         v[j] = j + omp_get_thread_num ();
  50       for (j = 0; j < n * 3 + i; j++)
  51         w[j] = j + 10 + omp_get_thread_num ();
  52       check (m, i, v, w);
  53     }
  54   return 0;
  55 }
  56
  57 int
  58 main (void)
  59 {
  60 #pragma omp parallel num_threads (3)
  61   foo (128, 128);
  62   bar (256, 256);
  63   return 0;
  64 }