1  /* { dg-require-effective-target size32plus } */
       2  
       3  #define DEBUG 0
       4  #if DEBUG
       5  #include <stdio.h>
       6  #endif
       7  
       8  #define NMAX 2000
       9  
      10  static int x1[NMAX], x2[NMAX], a[NMAX][NMAX], y1[NMAX], y2[NMAX];
      11  
      12  static int __attribute__((noinline))
      13  mvt (long N)
      14  {
      15  
      16    int i,j;
      17  
      18    for (i = 0; i < N; i++)
      19      for (j = 0; j < N; j++)
      20        x1[i] = x1[i] + a[i][j] * y1[j];
      21  
      22    /* These two loops should be interchanged.  */
      23    for (i = 0; i < N; i++)
      24      for (j = 0; j < N; j++)
      25        x2[i] = x2[i] + a[j][i] * y2[j];
      26  
      27    return x1[0] + x2[0];
      28  }
      29  
      30  extern void abort ();
      31  
      32  int
      33  main (void)
      34  {
      35    int i, j, res;
      36  
      37    for (i = 0; i < NMAX; i++)
      38      for (j = 0; j < NMAX; j++)
      39        a[i][j] = i + j;
      40  
      41    for (i = 0; i < NMAX; i++)
      42      {
      43        x1[i] = 0;
      44        x2[i] = 2*i;
      45        y1[i] = 100 - i;
      46        y2[i] = i;
      47      }
      48  
      49    res = mvt (NMAX);
      50  
      51  #if DEBUG
      52    fprintf (stderr, "res = %d \n", res);
      53  #endif
      54  
      55    if (res != 199900000)
      56      abort ();
      57  
      58    return 0;
      59  }
      60  
      61  /* { dg-final { scan-tree-dump "tiled by" "graphite" } } */