1  /* PR tree-optimization/63563 */
       2  /* { dg-do compile } */
       3  /* { dg-options "-O3 -mavx2" } */
       4  
       5  struct A { unsigned long a, b, c, d; } a[1024] = { { 0, 1, 2, 3 } }, b;
       6  
       7  void
       8  foo (void)
       9  {
      10    int i;
      11    for (i = 0; i < 1024; i++)
      12      {
      13        a[i].a = a[i].b = a[i].c = b.c;
      14        if (a[i].d)
      15  	a[i].d = b.d;
      16      }
      17  }