libgomp/testsuite/libgomp.c-c++-common/requires-5.c

   1 /* { dg-additional-options "-foffload-options=nvptx-none=-misa=sm_35" { target { offload_target_nvptx } } } */
   2 /* { dg-additional-sources requires-5-aux.c } */
   3
   4 /* Depending on offload device capabilities, it may print something like the
   5    following (only) if GOMP_DEBUG=1:
   6    "devices present but 'omp requires unified_address, unified_shared_memory, reverse_offload' cannot be fulfilled"
   7    and in that case does host-fallback execution.
   8
   9    As no offload devices support USM at present, we may verify host-fallback
  10    execution by absence of separate memory spaces.  */
  11
  12 #pragma omp requires unified_shared_memory, unified_address, reverse_offload
  13
  14 int a[10] = { 0 };
  15 extern void foo (void);
  16
  17 int
  18 main (void)
  19 {
  20   #pragma omp target map(to: a)
  21   for (int i = 0; i < 10; i++)
  22     a[i] = i;
  23
  24   for (int i = 0; i < 10; i++)
  25     if (a[i] != i)
  26       __builtin_abort ();
  27
  28   foo ();
  29   return 0;
  30 }