gcc/testsuite/gcc.dg/autopar/outer-2.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -ftree-parallelize-loops=4 -fdump-tree-parloops-details -fdump-tree-optimized" } */
   3
   4 void abort (void);
   5
   6 void parloop (int N)
   7 {
   8   int i, j,ii;
   9   int x[401][10][401];
  10
  11 for (ii = 0; ii < N; ii++)
  12   for (i = 0; i < N; i++)
  13     for (j = 0; j < N; j++)
  14       x[i][j][ii] = ii+i + j + 3;
  15
  16 for (ii = 0; ii < N; ii++)
  17   for (i = 0; i < N;i++)
  18     for (j = 0; j < N; j++)
  19       if (x[i][j][ii] != ii+i + j + 3)
  20         abort ();
  21 }
  22
  23 int main(void)
  24 {
  25   parloop(400);
  26
  27   return 0;
  28 }
  29
  30 /* { dg-final { scan-tree-dump-times "parallelizing outer loop" 1 "parloops" } } */
  31 /* { dg-final { scan-tree-dump-times "loopfn" 4 "optimized" } } */