gcc/testsuite/gcc.dg/tree-ssa/loop-33.c

/* { dg-do compile } */
/* { dg-options "-O2 -fdump-tree-lim2-details" } */

int x;
int a[100];

struct a
{
  int X;
  int Y;
};

struct a arr[100];

void test4(unsigned b)
{
  unsigned i;

  /* And here.  */
  for (i = 0; i < 100; i++)
    {
      arr[b+8].X += i;
      arr[b+9].X += i;
    }
}

void test5(struct a *A, unsigned b)
{
  unsigned i;

  /* And here as well.  */
  for (i = 0; i < 100; i++)
    {
      A[b].X += i;
      A[b+1].Y += i;
    }
}

/* { dg-final { scan-tree-dump-times "Executing store motion of" 4 "lim2" { xfail { lp64 || llp64 } } } } */