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/* { dg-do compile } */
/* { dg-options "-O2" } */
/* { dg-final { scan-assembler "b\[np\] " } } */
 
#define a_val (*((volatile unsigned char *) 0x7f14))
#define b_val (*((volatile unsigned char *) 0x7f10))
 
unsigned char * a_ptr = (unsigned char *) 0x7f14;
unsigned char * b_ptr = (unsigned char *) 0x7f10;
 
int
foo (void)
{
  if (a_val & 0x08)
    {
      if (b_val & 0x08)
	return -1;
 
      return 0;
    }
 
  return -1;
}
 
int
bar (void)
{
  *a_ptr = 0x08;
  *b_ptr = 0xf7;
 
  return foo ();
}