libgomp/testsuite/libgomp.oacc-c-c++-common/kernels-private-vars-loop-gang-3.c

   1 #include <assert.h>
   2
   3 /* Test of gang-private variables declared on loop directive, with broadcasting
   4    to partitioned vectors.  */
   5
   6 int
   7 main (int argc, char* argv[])
   8 {
   9   int x = 5, 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         x = i * 2;
  20
  21         #pragma acc loop vector(length:32)
  22         for (int j = 0; j < 32; j++)
  23           arr[i * 32 + j] += x;
  24       }
  25   }
  26
  27   for (i = 0; i < 32 * 32; i++)
  28     assert (arr[i] == i + (i / 32) * 2);
  29
  30   return 0;
  31 }