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

   1 /* Test of worker-private variables declared on a 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 * 32];
  27
  28   for (i = 0; i < 32 * 32; i++)
  29     arr[i] = i;
  30
  31   #pragma acc kernels copy(arr)
  32   {
  33     int j;
  34
  35     /* { dg-note {forwarded loop nest in OpenACC 'kernels' region to 'parloops' for analysis} {} { target *-*-* } .+1 } */
  36     #pragma acc loop gang(num:32) /* { dg-line l_loop_i[incr c_loop_i] } */
  37     /* { dg-note {variable 'j' declared in block isn't candidate for adjusting OpenACC privatization level: not addressable} {} { target *-*-* } l_loop_i$c_loop_i } */
  38     /* { dg-note {variable 'i' in 'private' clause isn't candidate for adjusting OpenACC privatization level: not addressable} {} { target *-*-* } l_loop_i$c_loop_i } */
  39     for (i = 0; i < 32; i++)
  40       {
  41         #pragma acc loop worker(num:32) private(x) /* { dg-line l_loop_j[incr c_loop_j] } */
  42         /* { dg-note {variable 'x' in 'private' clause isn't candidate for adjusting OpenACC privatization level: not addressable} {} { target *-*-* } l_loop_j$c_loop_j } */
  43         /* { dg-note {variable 'j' in 'private' clause isn't candidate for adjusting OpenACC privatization level: not addressable} {} { target *-*-* } l_loop_j$c_loop_j } */
  44         for (j = 0; j < 32; j++)
  45           {
  46             x = i ^ j * 3;
  47             /* Try to ensure 'x' accesses doesn't get optimized into a
  48                temporary.  */
  49             __asm__ __volatile__ ("");
  50             arr[i * 32 + j] += x;
  51           }
  52       }
  53     /* { dg-optimized {assigned OpenACC seq loop parallelism} {} { target *-*-* } l_loop_i$c_loop_i } */
  54   }
  55
  56   for (i = 0; i < 32 * 32; i++)
  57     assert (arr[i] == i + ((i / 32) ^ (i % 32) * 3));
  58
  59   return 0;
  60 }