libgomp/testsuite/libgomp.oacc-c-c++-common/kernels-private-vars-loop-gang-1.c

   1 /* Test of gang-private variables declared on loop directive.  */
   2
   3 /* { dg-additional-options "--param=openacc-kernels=decompose" } */
   4
   5 /* { dg-additional-options "-fopt-info-omp-all" }
   6    { dg-additional-options "-foffload=-fopt-info-omp-all" } */
   7
   8 /* { dg-additional-options "--param=openacc-privatization=noisy" }
   9    { dg-additional-options "-foffload=--param=openacc-privatization=noisy" }
  10    Prune a few: uninteresting:
  11    { dg-prune-output {note: variable 'D\.[0-9]+' declared in block isn't candidate for adjusting OpenACC privatization level: not addressable} } */
  12
  13 /* It's only with Tcl 8.5 (released in 2007) that "the variable 'varName'
  14    passed to 'incr' may be unset, and in that case, it will be set to [...]",
  15    so to maintain compatibility with earlier Tcl releases, we manually
  16    initialize counter variables:
  17    { dg-line l_dummy[variable c_compute 0 c_loop_i 0 c_loop_j 0 c_loop_k 0] }
  18    { dg-message "dummy" "" { target iN-VAl-Id } l_dummy } to avoid
  19    "WARNING: dg-line var l_dummy defined, but not used".  */
  20
  21 #include <assert.h>
  22
  23 int
  24 main (int argc, char* argv[])
  25 {
  26   int x = 5, i, arr[32];
  27
  28   for (i = 0; i < 32; i++)
  29     arr[i] = i;
  30
  31   #pragma acc kernels copy(arr)
  32   {
  33     /* { dg-note {forwarded loop nest in OpenACC 'kernels' region to 'parloops' for analysis} {} { target *-*-* } .+1 } */
  34     #pragma acc loop gang(num:32) private(x) /* { dg-line l_loop_i[incr c_loop_i] } */
  35     /* { dg-note {variable 'x' in 'private' clause isn't candidate for adjusting OpenACC privatization level: not addressable} {} { target *-*-* } l_loop_i$c_loop_i } */
  36     /* { dg-note {variable 'i' in 'private' clause isn't candidate for adjusting OpenACC privatization level: not addressable} {} { target *-*-* } l_loop_i$c_loop_i } */
  37     for (i = 0; i < 32; i++)
  38       {
  39         x = i * 2;
  40         arr[i] += x;
  41       }
  42     /* { dg-optimized {assigned OpenACC seq loop parallelism} {} { target *-*-* } l_loop_i$c_loop_i } */
  43   }
  44
  45   for (i = 0; i < 32; i++)
  46     assert (arr[i] == i * 3);
  47
  48   return 0;
  49 }