File: async_copy_loop.cl

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oclgrind 21.10-3
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kernel void async_copy_loop(global int *data, local int *scratch)
{
  int i = get_local_id(0);

  event_t event = 0;
  for (int j = 0; j < get_local_size(0); j++)
  {
    int offset = j;
    event = async_work_group_copy(scratch+offset, data+offset, 1, event);
  }
  wait_group_events(1, &event);

  data[get_local_size(0)-i-1] = scratch[i];
}