libgomp/testsuite/libgomp.oacc-c-c++-common/loop-red-w-1.c

   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 int main ()
  10 {
  11   int ix;
  12   int ondev = 0;
  13   int t = 0,  h = 0;
  14   int workersize;
  15
  16 #pragma acc parallel num_workers(32) vector_length(32) copy(ondev) \
  17             copyout(workersize)
  18   /* { dg-warning "region is vector partitioned but does not contain vector partitioned code" "" { target *-*-* } .-2 } */
  19   {
  20 #pragma acc loop worker reduction(+:t)
  21     for (unsigned ix = 0; ix < N; ix++)
  22       {
  23         int val = ix;
  24
  25         if (acc_on_device (acc_device_not_host))
  26           {
  27             int g, w, v;
  28
  29             g = __builtin_goacc_parlevel_id (GOMP_DIM_GANG);
  30             w = __builtin_goacc_parlevel_id (GOMP_DIM_WORKER);
  31             v = __builtin_goacc_parlevel_id (GOMP_DIM_VECTOR);
  32             val = (g << 16) | (w << 8) | v;
  33             ondev = 1;
  34           }
  35         t += val;
  36       }
  37     workersize = __builtin_goacc_parlevel_size (GOMP_DIM_WORKER);
  38   }
  39
  40   for (ix = 0; ix < N; ix++)
  41     {
  42       int val = ix;
  43       if(ondev)
  44         {
  45           int g = 0;
  46           int w = ix % workersize;
  47           int v = 0;
  48
  49           val = (g << 16) | (w << 8) | v;
  50         }
  51       h += val;
  52     }
  53   if (t != h)
  54     {
  55       printf ("t=%x expected %x\n", t, h);
  56       return 1;
  57     }
  58
  59   return 0;
  60 }