1  /* { dg-additional-options "-Wopenacc-parallelism" } for testing/documenting
       2     aspects of that functionality.  */
       3  
       4  #include <stdio.h>
       5  #include <openacc.h>
       6  #include <gomp-constants.h>
       7  
       8  #define N (32*32*32+17)
       9  
      10  #pragma acc routine gang
      11  void __attribute__ ((noinline)) gang (int ary[N])
      12  /* { dg-warning "region is worker partitioned but does not contain worker partitioned code" "" { target *-*-* } .-1 } */
      13  /* { dg-warning "region is vector partitioned but does not contain vector partitioned code" "" { target *-*-* } .-2 } */
      14  {
      15  #pragma acc loop gang
      16      for (unsigned ix = 0; ix < N; ix++)
      17        {
      18  	if (acc_on_device (acc_device_not_host))
      19  	  {
      20  	    int g, w, v;
      21  
      22  	    g = __builtin_goacc_parlevel_id (GOMP_DIM_GANG);
      23  	    w = __builtin_goacc_parlevel_id (GOMP_DIM_WORKER);
      24  	    v = __builtin_goacc_parlevel_id (GOMP_DIM_VECTOR);
      25  	    ary[ix] = (g << 16) | (w << 8) | v;
      26  	  }
      27  	else
      28  	  ary[ix] = ix;
      29        }
      30  }
      31  
      32  int main ()
      33  {
      34    int ary[N];
      35    int ix;
      36    int exit = 0;
      37    int ondev = 0;
      38  
      39    for (ix = 0; ix < N;ix++)
      40      ary[ix] = -1;
      41    
      42  #pragma acc parallel num_gangs(32) copy(ary) copy(ondev)
      43    {
      44      ondev = acc_on_device (acc_device_not_host);
      45      gang (ary);
      46    }
      47  
      48    for (ix = 0; ix < N; ix++)
      49      {
      50        int expected = ix;
      51        if(ondev)
      52  	{
      53  	  int g = ix / ((N + 31) / 32);
      54  	  int w = 0;
      55  	  int v = 0;
      56  
      57  	  expected = (g << 16) | (w << 8) | v;
      58  	}
      59        
      60        if (ary[ix] != expected)
      61  	{
      62  	  exit = 1;
      63  	  printf ("ary[%d]=%x expected %x\n", ix, ary[ix], expected);
      64  	}
      65      }
      66    
      67    return exit;
      68  }