Subversion Repositories openrisc_2011-10-31

/* { dg-do run  { target powerpc*-*-* i?86-*-* x86_64-*-* } } */

/* { dg-options "-O1" } */

/* Test to make sure that inline-asm causes the tree optimizers to get the

   V_MAY_DEFs and clobber memory.  */

/* Test from Jakub Jelinek, modified by Andrew Pinski to work on all powerpc targets.  */

extern void abort (void);

unsigned short v = 0x0300;

void

foo (unsigned short *p)

{

  *p = v;

}

int

bar (void)

{

  unsigned short x;

  volatile unsigned short *z;

  foo (&x);

  const unsigned int y = x;

  z = &x;

#if defined (__powerpc__) || defined (__PPC__) || defined (__ppc__) || defined (_POWER) || defined (__ppc64__)

  __asm __volatile ("sthbrx %1,0,%2" : "=m" (*z) : "r" (y), "r" (z));

#elif defined __i386__ || defined __x86_64__

  __asm __volatile ("movb %b1,1(%2); movb %h1,(%2)" : "=m" (*z) : "r" (y), "r"

(z));

#endif

  return (x & 1) == 0;

}

int

main (void)

{

  if (bar ())

    abort ();

  return 0;

}