/* This was cut down from reload1.c in May 2001, was observed to cause   a bootstrap failure for powerpc-apple-darwin1.3.   Copyright (C) 2001  Free Software Foundation.  */enum insn_code{  CODE_FOR_extendqidi2 = 3,  CODE_FOR_nothing = 870};struct rtx_def;enum machine_mode{  VOIDmode,  MAX_MACHINE_MODE};typedef unsigned long long HARD_REG_ELT_TYPE;typedef HARD_REG_ELT_TYPE HARD_REG_SET[((77 + (8 * 8) - 1) / (8 * 8))];enum rtx_code{  UNKNOWN,  NIL,  REG,  LAST_AND_UNUSED_RTX_CODE};typedef struct{  unsigned min_align:8;  unsigned base_after_vec:1;  unsigned min_after_vec:1;  unsigned max_after_vec:1;  unsigned min_after_base:1;  unsigned max_after_base:1;  unsigned offset_unsigned:1;  unsigned:2;  unsigned scale:8;}addr_diff_vec_flags;typedef union rtunion_def{  long long rtwint;  int rtint;  unsigned int rtuint;  const char *rtstr;  struct rtx_def *rtx;  struct rtvec_def *rtvec;  enum machine_mode rttype;  addr_diff_vec_flags rt_addr_diff_vec_flags;  struct cselib_val_struct *rt_cselib;  struct bitmap_head_def *rtbit;  union tree_node *rttree;  struct basic_block_def *bb;}rtunion;typedef struct rtx_def{  enum rtx_code code:16;  enum machine_mode mode:8;  unsigned int jump:1;  unsigned int call:1;  unsigned int unchanging:1;  unsigned int volatil:1;  unsigned int in_struct:1;  unsigned int used:1;  unsigned integrated:1;  unsigned frame_related:1;  rtunion fld[1];} *rtx;enum reload_type{  RELOAD_FOR_INPUT, RELOAD_FOR_OUTPUT, RELOAD_FOR_INSN,  RELOAD_FOR_INPUT_ADDRESS, RELOAD_FOR_INPADDR_ADDRESS,  RELOAD_FOR_OUTPUT_ADDRESS, RELOAD_FOR_OUTADDR_ADDRESS,  RELOAD_FOR_OPERAND_ADDRESS, RELOAD_FOR_OPADDR_ADDR,  RELOAD_OTHER, RELOAD_FOR_OTHER_ADDRESS};struct reload{  rtx in;  rtx out;  //  enum reg_class class;  enum machine_mode inmode;  enum machine_mode outmode;  enum machine_mode mode;  unsigned int nregs;  int inc;  rtx in_reg;  rtx out_reg;  int regno;  rtx reg_rtx;  int opnum;  int secondary_in_reload;  int secondary_out_reload;  enum insn_code secondary_in_icode;  enum insn_code secondary_out_icode;  enum reload_type when_needed;  unsigned int optional:1;  unsigned int nocombine:1;  unsigned int secondary_p:1;  unsigned int nongroup:1;};struct insn_chain{  rtx insn;};extern int n_reloads;static short reload_order[(2 * 10 * (2 + 1))];int reload_spill_index[(2 * 10 * (2 + 1))];extern struct reload rld[(2 * 10 * (2 + 1))];static rtx *reg_last_reload_reg;static HARD_REG_SET reg_reloaded_valid;static HARD_REG_SET reg_reloaded_dead;static HARD_REG_SET reg_reloaded_died;static HARD_REG_SET reg_is_output_reload;extern const unsigned int mode_size[];extern int target_flags;static voidemit_reload_insns (chain)     struct insn_chain *chain;{  rtx insn = chain->insn;  register int j;  rtx following_insn = (((insn)->fld[2]).rtx);  rtx before_insn = (((insn)->fld[1]).rtx);  for (j = 0; j < n_reloads; j++)    {      register int r = reload_order[j];      register int i = reload_spill_index[r];	{	  rtx out = (((enum rtx_code) (rld[r].out)->code) == REG ? rld[r].out : rld[r].out_reg);	  register int nregno = (((out)->fld[0]).rtuint);	  if (nregno >= 77)	    {	      rtx src_reg, store_insn = (rtx) 0;	      reg_last_reload_reg[nregno] = 0;	      if (src_reg && ((enum rtx_code) (src_reg)->code) == REG && (((src_reg)->fld[0]).rtuint) < 77)		{		  int src_regno = (((src_reg)->fld[0]).rtuint);		  int nr =		    (((src_regno) >= 32		      && (src_regno) <=		      63) ? (((mode_size[(int) (rld[r].mode)]) + 8 -			      1) / 8) : (((mode_size[(int) (rld[r].mode)]) +					  (!(target_flags & 0x00000020) ? 4 :					   8) - 1) / (!(target_flags & 0x00000020) ? 4 : 8)));		  rtx note = 0;		  while (nr-- > 0)		    {		      ((reg_reloaded_dead)		       [(src_regno + nr) / ((unsigned) (8 * 8))] &=		       ~(((HARD_REG_ELT_TYPE) (1)) << ((src_regno + nr) % ((unsigned) (8 * 8)))));		      ((reg_reloaded_valid)		       [(src_regno + nr) / ((unsigned) (8 * 8))] |=		       ((HARD_REG_ELT_TYPE) (1)) << ((src_regno + nr) % ((unsigned) (8 * 8))));		      ((reg_is_output_reload)		       [(src_regno + nr) / ((unsigned) (8 * 8))] |=		       ((HARD_REG_ELT_TYPE) (1)) << ((src_regno + nr) % ((unsigned) (8 * 8))));		      if (note)			((reg_reloaded_died)			 [(src_regno) / ((unsigned) (8 * 8))] |=			 ((HARD_REG_ELT_TYPE) (1)) << ((src_regno) % ((unsigned) (8 * 8))));		      else			((reg_reloaded_died)			 [(src_regno) / ((unsigned) (8 * 8))] &=			 ~(((HARD_REG_ELT_TYPE) (1)) << ((src_regno) % ((unsigned) (8 * 8)))));		    }		  reg_last_reload_reg[nregno] = src_reg;		}	    }	  else	    {	      int num_regs =		(((nregno) >= 32		  && (nregno) <=		  63)		 ? (((mode_size		      [(int) (((enum machine_mode) (rld[r].out)->mode))]) +		     8 -		     1) /		    8)		 : (((mode_size		      [(int) (((enum machine_mode) (rld[r].out)->mode))]) +		     (!(target_flags & 0x00000020) ? 4 : 8) - 1) / (!(target_flags & 0x00000020) ? 4 : 8)));	      while (num_regs-- > 0)		reg_last_reload_reg[nregno + num_regs] = 0;	    }	}    }}