1  /* { dg-do compile } */
       2  /* { dg-additional-options "-fno-tree-loop-vectorize" } */
       3  
       4  int a[4], b[400];
       5  
       6  void f1()
       7  {
       8    for (int i = 0; i < 100; ++i)
       9      {
      10        a[0] += b[i * 4 + 3];
      11        a[1] += b[i * 4 + 2];
      12        a[2] += b[i * 4 + 1];
      13        a[3] += b[i * 4 + 0];
      14      }
      15  }
      16  
      17  /* { dg-final { scan-tree-dump-times "add new stmt: \[^\\n\\r\]* = VEC_PERM_EXPR" 2 "slp1" { target { vect_int && vect_perm } } } } */