/* { dg-do compile } */
/* { dg-additional-options "-fdump-tree-optimized-details-blocks" } */
/* { dg-require-effective-target vect_int } */

extern void abort (void);

#define N 128

short a[N];
short d[N];

int foo ()
{
  int i;
  short b[N];
  short c[N];
  for (i = 0; i < N/2; i++)
    {
      b[i] = i*3;
      c[i] = i;
      asm volatile ("" ::: "memory");
    }

  /* Strided access pattern.  */
  for (i = 0; i < N/2; i++)
    {
      a[i] = b[2*i+1] * c[2*i+1] - b[2*i] * c[2*i];
      d[i] = b[2*i] * c[2*i+1] + b[2*i+1] * c[2*i];
    }

  return 0;
}

/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { xfail { ! vect_strided2 } } } } */
/* { dg-final { scan-tree-dump-not "Invalid sum" "optimized" } } */