extern int target_flags;
  
enum reg_class
{
  NO_REGS,
  AREG, DREG, CREG, BREG,
  Q_REGS,			 
  SIREG, DIREG,
  INDEX_REGS,			 
  GENERAL_REGS,			 
  FP_TOP_REG, FP_SECOND_REG,	 
  FLOAT_REGS,
  ALL_REGS, LIM_REG_CLASSES
};
extern enum reg_class regclass_map[17 ];
  
   
extern struct rtx_def *i386_compare_op0, *i386_compare_op1;
extern struct rtx_def *(*i386_compare_gen)(), *(*i386_compare_gen_eq)();
extern char *hi_reg_name[];
extern char *qi_reg_name[];
extern char *qi_high_reg_name[];
  
enum machine_mode {
  VOIDmode , 
  QImode , 		 
  HImode , 
  PSImode , 
  SImode , 
  PDImode , 
  DImode , 
  TImode , 
  OImode , 
  QFmode , 
  HFmode , 
  SFmode , 
  DFmode , 
  XFmode ,     
  TFmode , 
  SCmode , 
  DCmode , 
  XCmode , 
  TCmode , 
  CQImode , 
  CHImode , 
  CSImode , 
  CDImode , 
  CTImode , 
  COImode , 
  BLKmode , 
  CCmode , 
  CCFPEQmode ,
MAX_MACHINE_MODE };
extern char *mode_name[];
enum mode_class { MODE_RANDOM, MODE_INT, MODE_FLOAT, MODE_PARTIAL_INT, MODE_CC,
		  MODE_COMPLEX_INT, MODE_COMPLEX_FLOAT, MAX_MODE_CLASS};
extern enum mode_class mode_class[];
extern int mode_size[];
extern int mode_unit_size[];
extern enum machine_mode mode_wider_mode[];
extern enum machine_mode mode_for_size  (unsigned int, enum mode_class, int)  ;
extern enum machine_mode get_best_mode  (int, int, int, enum machine_mode, int)  ;
extern enum machine_mode class_narrowest_mode[];
extern enum machine_mode byte_mode;
extern enum machine_mode word_mode;
typedef int ptrdiff_t;
typedef unsigned int size_t;
typedef short unsigned int wchar_t;
typedef unsigned int UQItype	__attribute__ ((mode (QI)));
typedef 	 int SItype	__attribute__ ((mode (SI)));
typedef unsigned int USItype	__attribute__ ((mode (SI)));
typedef		 int DItype	__attribute__ ((mode (DI)));
typedef unsigned int UDItype	__attribute__ ((mode (DI)));
typedef 	float SFtype	__attribute__ ((mode (SF)));
typedef		float DFtype	__attribute__ ((mode (DF)));
typedef int word_type __attribute__ ((mode (SI)));
  struct DIstruct {SItype low, high;};
typedef union
{
  struct DIstruct s;
  DItype ll;
} DIunion;
extern DItype __fixunssfdi (SFtype a);
extern DItype __fixunsdfdi (DFtype a);
static inline
DItype
__negdi2 (u)
     DItype u;
{
  DIunion w;
  DIunion uu;
  uu.ll = u;
  w.s.low = -uu.s.low;
  w.s.high = -uu.s.high - ((USItype) w.s.low > 0);
  return w.ll;
}
UDItype __udivmoddi4 ();
DItype
__moddi3 (u, v)
     DItype u, v;
{
  SItype c = 0;
  DIunion uu, vv;
  DItype w;
  uu.ll = u;
  vv.ll = v;
  if (uu.s.high < 0)
    c = ~c,
    uu.ll = __negdi2 (uu.ll);
  if (vv.s.high < 0)
    vv.ll = __negdi2 (vv.ll);
  (void) __udivmoddi4 (uu.ll, vv.ll, &w);
  if (c)
    w = __negdi2 (w);
  return w;
}