1  /* { dg-do compile } */
       2  /* { dg-options "-O -fno-tree-sra -fdump-tree-fre1" } */
       3  
       4  int foo(void)
       5  {
       6    int a[16] = {};
       7    return a[3];
       8  }
       9  
      10  int bar(void)
      11  {
      12    int a[16];
      13    __builtin_memset (a, 0, sizeof(a));
      14    return a[3];
      15  }
      16  
      17  struct X { int i; };
      18  int baz(void)
      19  {
      20    struct X a,b;
      21    a.i = 0;
      22    b = a;
      23    return b.i;
      24  }
      25  
      26  int bazzoo (void)
      27  {
      28    struct X b, a = {};
      29    b = a;
      30    return b.i;
      31  }
      32  
      33  /* { dg-final { scan-tree-dump-times "return 0;" 4 "fre1" } } */