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/* PR tree-optimization/51987 */

/* { dg-do run { target { ! { ia32 } } } } */

/* { dg-options "-O3" } */

extern void abort (void);

union U { unsigned long long l; struct { unsigned int l, h; } i; };

__attribute__((noinline, noclone)) void

foo (char *x, char *y)

{

  int i;

  for (i = 0; i < 64; i++)

    {

      union U u;

      asm ("movl %1, %k0; salq $32, %0" : "=r" (u.l) : "r" (i));

      x[i] = u.i.h;

      union U v;

      asm ("movl %1, %k0; salq $32, %0" : "=r" (v.l) : "r" (i));

      y[i] = v.i.h;

    }

}

int

main ()

{

  char a[64], b[64];

  int i;

  foo (a, b);

  for (i = 0; i < 64; i++)

    if (a[i] != i || b[i] != i)

      abort ();

  return 0;

}