for (i = 0; i < 6; i++)
for (i = 0; i < 8; i++)
strlen (const char *str){  const char *char_ptr;  const unsigned long int *longword_ptr;  /* Handle the first few characters by reading one character at a time.     Do this until STR is aligned on a 8-byte border.  */  for (char_ptr = str; ((unsigned long int) char_ptr & 7) != 0; ++char_ptr)    if (*char_ptr == '\0')      return char_ptr - str;  longword_ptr = (unsigned long int *) char_ptr;  for (;;)    {      int mask;      asm ("cmpbge %1, %2, %0" : "=r" (mask) : "r" (0), "r" (*longword_ptr++));      if (mask)	{	  /* Which of the bytes was the zero?  */	  const char *cp = (const char *) (longword_ptr - 1);	  int i;	  for (i = 0; i < 6; i++)	    if (cp[i] == 0)	      return cp - str + i;	  return cp - str + 7;	}    }}