1  /* { dg-require-effective-target vect_float } */
       2  
       3  #include <stdarg.h>
       4  #include "tree-vect.h"
       5  
       6  #define N 16
       7  #define DIFF 82
       8  
       9  float c[N][N], b[N][N], a[N];
      10  
      11  __attribute__ ((noinline)) int 
      12  main1 ()
      13  {
      14    int i, j;
      15    float diff;
      16  
      17    /* In inner loop vectorization -funsafe-math-optimizations is needed to 
      18       vectorize the summation. But in outer loop vectorization the order of
      19       calculation doesn't change, therefore, there is no need in that flag.  */
      20    for (i = 0; i < N; i++)
      21      {
      22        diff = 2;
      23        for (j = 0; j < N; j++) 
      24          diff += (b[j][i] - c[j][i]);
      25  
      26        a[i] = diff;
      27      }
      28  
      29    /* Check results:  */
      30    for (i = 0; i < N; i++)
      31      if (a[i] != DIFF)
      32        abort ();
      33  
      34    return 0;
      35  }
      36  
      37  int main (void)
      38  { 
      39    int i, j;
      40  
      41    check_vect ();
      42    
      43    for (i = 0; i < N; i++)
      44      for (j = 0; j < N; j++)
      45        {
      46          b[i][j] = i+j+5;
      47          c[i][j] = i+j;
      48        }
      49           
      50    main1 ();
      51  
      52    return 0;
      53  }
      54  
      55  /* { dg-final { scan-tree-dump-times "OUTER LOOP VECTORIZED" 1 "vect" } } */