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  }