libgomp/testsuite/libgomp.oacc-c-c++-common/kernels-private-vars-loop-gang-2.c

   1 /* Test of gang-private variables declared on loop directive, with broadcasting
   2    to partitioned workers.  */
   3
   4 /* { dg-additional-options "--param=openacc-kernels=decompose" } */
   5
   6 /* { dg-additional-options "-fopt-info-omp-all" }
   7    { dg-additional-options "-foffload=-fopt-info-omp-all" } */
   8
   9 /* { dg-additional-options "--param=openacc-privatization=noisy" }
  10    { dg-additional-options "-foffload=--param=openacc-privatization=noisy" }
  11    Prune a few: uninteresting:
  12    { dg-prune-output {note: variable 'D\.[0-9]+' declared in block isn't candidate for adjusting OpenACC privatization level: not addressable} } */
  13
  14 /* It's only with Tcl 8.5 (released in 2007) that "the variable 'varName'
  15    passed to 'incr' may be unset, and in that case, it will be set to [...]",
  16    so to maintain compatibility with earlier Tcl releases, we manually
  17    initialize counter variables:
  18    { dg-line l_dummy[variable c_compute 0 c_loop_i 0 c_loop_j 0 c_loop_k 0] }
  19    { dg-message "dummy" "" { target iN-VAl-Id } l_dummy } to avoid
  20    "WARNING: dg-line var l_dummy defined, but not used".  */
  21
  22 #include <assert.h>
  23
  24 int
  25 main (int argc, char* argv[])
  26 {
  27   int x = 5, i, arr[32 * 32];
  28
  29   for (i = 0; i < 32 * 32; i++)
  30     arr[i] = i;
  31
  32   #pragma acc kernels copy(arr)
  33   {
  34     /* { dg-note {forwarded loop nest in OpenACC 'kernels' region to 'parloops' for analysis} {} { target *-*-* } .+1 } */
  35     #pragma acc loop gang(num:32) private(x) /* { dg-line l_loop_i[incr c_loop_i] } */
  36     /* { dg-note {variable 'x' in 'private' clause isn't candidate for adjusting OpenACC privatization level: not addressable} {} { target *-*-* } l_loop_i$c_loop_i } */
  37     /* { dg-note {variable 'i' in 'private' clause isn't candidate for adjusting OpenACC privatization level: not addressable} {} { target *-*-* } l_loop_i$c_loop_i } */
  38     /* { dg-note {variable 'j' declared in block isn't candidate for adjusting OpenACC privatization level: not addressable} {} { target *-*-* } l_loop_i$c_loop_i } */
  39     for (i = 0; i < 32; i++)
  40       {
  41         x = i * 2;
  42
  43         #pragma acc loop worker(num:32) /* { dg-line l_loop_j[incr c_loop_j] } */
  44         /* { dg-note {variable 'j' in 'private' clause isn't candidate for adjusting OpenACC privatization level: not addressable} {} { target *-*-* } l_loop_j$c_loop_j } */
  45         for (int j = 0; j < 32; j++)
  46           arr[i * 32 + j] += x;
  47       }
  48     /* { dg-optimized {assigned OpenACC seq loop parallelism} {} { target *-*-* } l_loop_i$c_loop_i } */
  49   }
  50
  51   for (i = 0; i < 32 * 32; i++)
  52     assert (arr[i] == i + (i / 32) * 2);
  53
  54   return 0;
  55 }