1  /* { dg-do compile } */
       2  /* { dg-require-effective-target store_merge } */
       3  /* { dg-options "-O2 -fno-tree-vectorize -fdump-tree-store-merging" } */
       4  
       5  struct baz {
       6    struct bar {
       7        int a;
       8        char b;
       9        char c;
      10        char d;
      11        char e;
      12        char f;
      13        char g;
      14    } a[4];
      15  } x;
      16  struct baz *xx = &x;
      17  
      18  void
      19  foo1 (int i)
      20  {
      21    x.a[i].b = 0;
      22    x.a[i].a = 0;
      23    x.a[i].c = 0;
      24    x.a[i].d = 0;
      25    x.a[i].e = 0;
      26  }
      27  
      28  void
      29  foo2 (int i)
      30  {
      31    x.a[i].b = 0;
      32    x.a[i].a = 0;
      33    x.a[i].c = 1;
      34    x.a[i].d = 0;
      35    x.a[i].e = 0;
      36  }
      37  
      38  /* { dg-final { scan-tree-dump-times "Merging successful" 2 "store-merging" } } */