1  /* { dg-do compile } */
       2  /* { dg-options "-O3 --param=max-unswitch-insns=1024" } */
       3  /* { dg-additional-options "-mavx512vl" { target x86_64-*-* i?86-*-* } } */
       4  
       5  int bad_odd_rows_0_0, rows_bad_row1, rows_bad_group_okay, calc_rows_row2;
       6  
       7  int
       8  rows_bad() {
       9    int i, in_zeroes;
      10    char block;
      11    i = 0;
      12    for (; i < 5; i++)
      13      if (rows_bad_row1 & i)
      14        in_zeroes = 0;
      15      else {
      16        if (!in_zeroes)
      17          in_zeroes = 1;
      18        if (block & 1)
      19          rows_bad_group_okay = 1;
      20      }
      21    if (in_zeroes)
      22      return rows_bad_group_okay;
      23  }
      24  
      25  void
      26  calc_rows() {
      27    for (; calc_rows_row2; calc_rows_row2++) {
      28      rows_bad();
      29      bad_odd_rows_0_0 = rows_bad();
      30    }
      31  }