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

   1 /* Test of vector-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, i, arr[32 * 32 * 32];
  27
  28   for (i = 0; i < 32 * 32 * 32; i++)
  29     arr[i] = i;
  30
  31   #pragma acc kernels copy(arr) /* { dg-line l_compute[incr c_compute] } */
  32   /* [PR104784] For some reason, for C++, the OpenACC 'kernels' decomposition
  33      decides that a data region is needed for 'j', and subsequently requests it
  34      to be made addressable.
  35      { dg-note {OpenACC 'kernels' decomposition: variable 'j' declared in block requested to be made addressable} {} { target c++ } l_compute$c_compute }
  36      { dg-note {variable 'j' made addressable} {} { target c++ } l_compute$c_compute }
  37      { dg-note {variable 'j' declared in block is candidate for adjusting OpenACC privatization level} {} { target c++ } l_compute$c_compute } */
  38   {
  39     int j;
  40
  41     /* { dg-note {forwarded loop nest in OpenACC 'kernels' region to 'parloops' for analysis} {} { target *-*-* } .+1 } */
  42     #pragma acc loop gang(num:32) /* { dg-line l_loop_i[incr c_loop_i] } */
  43     /* { dg-note {variable 'j' declared in block isn't candidate for adjusting OpenACC privatization level: not addressable} {} { target c } l_loop_i$c_loop_i } */
  44     /* { dg-note {variable 'i' in 'private' clause isn't candidate for adjusting OpenACC privatization level: not addressable} {} { target *-*-* } l_loop_i$c_loop_i } */
  45     for (i = 0; i < 32; i++)
  46       {
  47         #pragma acc loop worker(num:32) /* { dg-line l_loop_j[incr c_loop_j] } */
  48         /* { dg-note {variable 'j' in 'private' clause isn't candidate for adjusting OpenACC privatization level: not addressable} {} { target *-*-* } l_loop_j$c_loop_j } */
  49         /* { dg-note {variable 'k' declared in block isn't candidate for adjusting OpenACC privatization level: not addressable} {} { target *-*-* } l_loop_j$c_loop_j } */
  50         for (j = 0; j < 32; j++)
  51           {
  52             int k;
  53
  54             #pragma acc loop vector(length:32) private(x) /* { dg-line l_loop_k[incr c_loop_k] } */
  55             /* { dg-note {variable 'k' in 'private' clause isn't candidate for adjusting OpenACC privatization level: not addressable} {} { target *-*-* } l_loop_k$c_loop_k } */
  56             /* { dg-note {variable 'x' in 'private' clause isn't candidate for adjusting OpenACC privatization level: not addressable} {} { target *-*-* } l_loop_k$c_loop_k } */
  57             for (k = 0; k < 32; k++)
  58               {
  59                 x = i ^ j * 3;
  60                 arr[i * 1024 + j * 32 + k] += x * k;
  61               }
  62
  63             #pragma acc loop vector(length:32) private(x) /* { dg-line l_loop_k[incr c_loop_k] } */
  64             /* { dg-note {variable 'k' in 'private' clause isn't candidate for adjusting OpenACC privatization level: not addressable} {} { target *-*-* } l_loop_k$c_loop_k } */
  65             /* { dg-note {variable 'x' in 'private' clause isn't candidate for adjusting OpenACC privatization level: not addressable} {} { target *-*-* } l_loop_k$c_loop_k } */
  66             for (k = 0; k < 32; k++)
  67               {
  68                 x = i | j * 5;
  69                 arr[i * 1024 + j * 32 + k] += x * k;
  70               }
  71           }
  72       }
  73     /* { dg-optimized {assigned OpenACC seq loop parallelism} {} { target *-*-* } l_loop_i$c_loop_i } */
  74   }
  75
  76   for (i = 0; i < 32; i++)
  77     for (int j = 0; j < 32; j++)
  78       for (int k = 0; k < 32; k++)
  79         {
  80           int idx = i * 1024 + j * 32 + k;
  81           assert (arr[idx] == idx + (i ^ j * 3) * k + (i | j * 5) * k);
  82         }
  83
  84   return 0;
  85 }