1  /* { dg-do compile } */
       2  /* { dg-additional-options "-Ofast -fno-tree-scev-cprop" } */
       3  /* { dg-additional-options "-mavx2" { target { x86_64-*-* i?86-*-* } } } */
       4  
       5  struct reflection_type
       6  {
       7    int h;
       8    int k;
       9    int l;
      10    double f_exp;
      11    double f_sigma;
      12    _Complex double f_calc;
      13    double f_pred;
      14    double i_exp;
      15    double i_sigma;
      16    double i_pred;
      17  };
      18  
      19  double y, w;
      20  int foo (struct reflection_type *r, int n, unsigned s)
      21  {
      22    int i;
      23    y = 0;
      24    w = 0;
      25    for (i = 1; i < n; ++i)
      26      {
      27        struct reflection_type *x = &r[i*s];
      28        double fpred = x->f_pred;
      29        double fexp = x->f_exp;
      30        double tem = (fpred - fexp);
      31        y += __builtin_fabs (tem / x->f_sigma);
      32        w += __builtin_fabs (tem / fexp);
      33      }
      34    return i;
      35  }