libgomp/testsuite/libgomp.oacc-c-c++-common/kernels-private-vars-loop-gang-5.c

   1 #include <assert.h>
   2
   3 /* Test of gang-private array variable declared on loop directive, with
   4    broadcasting to partitioned workers.  */
   5
   6 int
   7 main (int argc, char* argv[])
   8 {
   9   int x[8], i, arr[32 * 32];
  10
  11   for (i = 0; i < 32 * 32; i++)
  12     arr[i] = i;
  13
  14   #pragma acc kernels copy(arr)
  15   {
  16     #pragma acc loop gang(num:32) private(x)
  17     for (i = 0; i < 32; i++)
  18       {
  19         for (int j = 0; j < 8; j++)
  20           x[j] = j * 2;
  21
  22         #pragma acc loop worker(num:32)
  23         for (int j = 0; j < 32; j++)
  24           arr[i * 32 + j] += x[j % 8];
  25       }
  26   }
  27
  28   for (i = 0; i < 32 * 32; i++)
  29     assert (arr[i] == i + (i % 8) * 2);
  30
  31   return 0;
  32 }