1  /* { dg-do compile } */
       2  /* { dg-options "-O2 -ftree-parallelize-loops=4 -fdump-tree-parloops2-details -fdump-tree-optimized" } */
       3  
       4  void abort (void);
       5  
       6  unsigned int x[500][500];
       7  unsigned int y[500];
       8  unsigned int g_sum=0;
       9  
      10  
      11  void __attribute__((noinline))
      12  init (int i, int j)
      13  {
      14    x[i][j]=1;
      15  }
      16  
      17  void __attribute__((noinline))
      18  parloop (int N)
      19  {
      20    int i, j;
      21    unsigned int sum;
      22  
      23    /* Outer loop reduction, outerloop is parallelized.  */
      24    sum=0;
      25    for (i = 0; i < N; i++)
      26      {
      27        for (j = 0; j < N; j++)
      28  	y[i] += x[i][j];
      29        sum += y[i];
      30      }
      31    g_sum = sum;
      32  }
      33  
      34  int
      35  main (void)
      36  {
      37    int i, j;
      38    for (i = 0; i < 500; i++)
      39      for (j = 0; j < 500; j++)
      40        init (i, j);
      41  
      42    parloop (500);
      43  
      44    return 0;
      45  }
      46  
      47  
      48  /* Check that outer loop is parallelized.  */
      49  /* { dg-final { scan-tree-dump-times "parallelizing outer loop" 1 "parloops2" } } */
      50  /* { dg-final { scan-tree-dump-times "parallelizing inner loop" 0 "parloops2" } } */
      51  /* { dg-final { scan-tree-dump-times "loopfn" 4 "optimized" } } */