h8300.md (*addsi3_and_r_1): New.

[gcc.git] / gcc / config / h8300 / h8300.md

;; GCC machine description for Hitachi H8/300
;; Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
;; 2001, 2002, 2003 Free Software Foundation, Inc.

;;   Contributed by Steve Chamberlain (sac@cygnus.com),
;;   Jim Wilson (wilson@cygnus.com), and Doug Evans (dje@cygnus.com).

;; This file is part of GCC.

;; GCC is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation; either version 2, or (at your option)
;; any later version.

;; GCC is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;; GNU General Public License for more details.

;; You should have received a copy of the GNU General Public License
;; along with GCC; see the file COPYING.  If not, write to
;; the Free Software Foundation, 59 Temple Place - Suite 330,
;; Boston, MA 02111-1307, USA.

;; Some of the extend instructions accept a general_operand_src, which
;; allows all the normal memory addressing modes.  The length computations
;; don't take this into account.  The lengths in the MD file should be
;; "worst case" and then be adjusted to their correct values by
;; h8300_adjust_insn_length.

;; On the H8/300H and H8S, adds/subs operate on the 32bit "er"
;; registers.  Right now GCC doesn't expose the "e" half to the
;; compiler, so using add/subs for addhi and subhi is safe.  Long
;; term, we want to expose the "e" half to the compiler (gives us 8
;; more 16bit registers).  At that point addhi and subhi can't use
;; adds/subs.

;; There's currently no way to have an insv/extzv expander for the H8/300H
;; because word_mode is different for the H8/300 and H8/300H.

;; Shifts/rotates by small constants should be handled by special
;; patterns so we get the length and cc status correct.

;; Bitfield operations no longer accept memory operands.  We need
;; to add variants which operate on memory back to the MD.

;; ??? Implement remaining bit ops available on the h8300

;; ----------------------------------------------------------------------
;; CONSTANTS
;; ----------------------------------------------------------------------

(define_constants
  [(UNSPEC_INCDEC       0)
   (UNSPEC_MONITOR      1)])

(define_constants
  [(SC_REG       3)
   (FP_REG       6)
   (SP_REG       7)
   (MAC_REG      8)
   (AP_REG       9)
   (RAP_REG     10)])

;; ----------------------------------------------------------------------
;; ATTRIBUTES
;; ----------------------------------------------------------------------

(define_attr "cpu" "h8300,h8300h"
  (const (symbol_ref "cpu_type")))

(define_attr "type" "branch,arith"
  (const_string "arith"))

;; The size of instructions in bytes.

(define_attr "length" ""
  (cond [(eq_attr "type" "branch")
         (if_then_else (and (ge (minus (match_dup 0) (pc))
                                (const_int -126))
                            (le (minus (match_dup 0) (pc))
                                (const_int 126)))
                       (const_int 2)
                       (if_then_else (and (eq_attr "cpu" "h8300h")
                                          (and (ge (minus (pc) (match_dup 0))
                                                   (const_int -32000))
                                               (le (minus (pc) (match_dup 0))
                                                   (const_int 32000))))
                                     (const_int 4)
                                     (const_int 6)))]
        (const_int 200)))

;; The necessity of instruction length adjustment.

(define_attr "adjust_length" "yes,no"
  (cond [(eq_attr "type" "branch") (const_string "no")]
        (const_string "yes")))

;; Condition code settings.
;;
;; none - insn does not affect cc
;; none_0hit - insn does not affect cc but it does modify operand 0
;;      This attribute is used to keep track of when operand 0 changes.
;;      See the description of NOTICE_UPDATE_CC for more info.
;; set_znv - insn sets z,n,v to usable values (like a tst insn); c is unknown.
;; set_zn  - insn sets z,n to usable values; v,c are unknown.
;; compare - compare instruction
;; clobber - value of cc is unknown

(define_attr "cc" "none,none_0hit,set_znv,set_zn,compare,clobber"
  (const_string "clobber"))
\f
;; ----------------------------------------------------------------------
;; MOVE INSTRUCTIONS
;; ----------------------------------------------------------------------

;; movqi

(define_insn "pushqi1_h8300"
  [(parallel [(set (reg:HI SP_REG)
                   (plus:HI (reg:HI SP_REG) (const_int -2)))
              (set (mem:QI (plus:HI (reg:HI SP_REG) (const_int -1)))
                   (match_operand:QI 0 "register_operand" "r"))])]
  "TARGET_H8300
   && REGNO (operands[0]) != SP_REG"
  "mov.w\\t%T0,@-r7"
  [(set_attr "length" "2")
   (set_attr "cc" "clobber")])

(define_insn "pushqi1_h8300hs"
  [(parallel [(set (reg:SI SP_REG)
                   (plus:SI (reg:SI SP_REG) (const_int -4)))
              (set (mem:QI (plus:SI (reg:SI SP_REG) (const_int -3)))
                   (match_operand:QI 0 "register_operand" "r"))])]
  "(TARGET_H8300H || TARGET_H8300S)
   && REGNO (operands[0]) != SP_REG"
  "mov.l\\t%S0,@-er7"
  [(set_attr "length" "4")
   (set_attr "cc" "clobber")])

(define_expand "pushqi1"
  [(use (match_operand:QI 0 "register_operand" ""))]
  ""
  "
{
  if (TARGET_H8300)
    emit_insn (gen_pushqi1_h8300 (operands[0]));
  else
    emit_insn (gen_pushqi1_h8300hs (operands[0]));
  DONE;
}")

(define_insn ""
  [(set (match_operand:QI 0 "general_operand_dst" "=r,r ,<,r,r,m")
        (match_operand:QI 1 "general_operand_src" " I,r>,r,n,m,r"))]
  "TARGET_H8300
   && (register_operand (operands[0], QImode)
       || register_operand (operands[1], QImode))"
  "@
   sub.b        %X0,%X0
   mov.b        %R1,%X0
   mov.b        %X1,%R0
   mov.b        %R1,%X0
   mov.b        %R1,%X0
   mov.b        %X1,%R0"
  [(set_attr "length" "2,2,2,2,4,4")
   (set_attr "cc" "set_zn,set_znv,set_znv,set_znv,set_znv,set_znv")])

(define_insn ""
  [(set (match_operand:QI 0 "general_operand_dst" "=r,r ,<,r,r,m")
        (match_operand:QI 1 "general_operand_src" " I,r>,r,n,m,r"))]
  "(TARGET_H8300H || TARGET_H8300S)
   && (register_operand (operands[0], QImode)
       || register_operand (operands[1], QImode))"
  "@
   sub.b        %X0,%X0
   mov.b        %R1,%X0
   mov.b        %X1,%R0
   mov.b        %R1,%X0
   mov.b        %R1,%X0
   mov.b        %X1,%R0"
  [(set_attr "length" "2,2,2,2,8,8")
   (set_attr "cc" "set_zn,set_znv,set_znv,clobber,set_znv,set_znv")])

(define_expand "movqi"
  [(set (match_operand:QI 0 "general_operand_dst" "")
        (match_operand:QI 1 "general_operand_src" ""))]
  ""
  "
{
  /* One of the ops has to be in a register.  */
  if (!register_operand (operand0, QImode)
      && !register_operand (operand1, QImode))
    {
      operands[1] = copy_to_mode_reg (QImode, operand1);
    }
}")

(define_insn "movstrictqi"
  [(set (strict_low_part (match_operand:QI 0 "general_operand_dst" "+r,r,r,r"))
                         (match_operand:QI 1 "general_operand_src" "I,r,n,m"))]
  ""
  "@
   sub.b        %X0,%X0
   mov.b        %X1,%X0
   mov.b        %R1,%X0
   mov.b        %R1,%X0"
  [(set_attr_alternative "length"
     [(const_int 2) (const_int 2) (const_int 2)
      (if_then_else (eq_attr "cpu" "h8300") (const_int 4) (const_int 8))])
   (set_attr "cc" "set_zn,set_znv,set_znv,set_znv")])

;; movhi

(define_expand "pushhi1_h8300"
  [(set (mem:HI (pre_dec:HI (reg:HI SP_REG)))
        (match_operand:HI 0 "register_operand" ""))]
  "TARGET_H8300
   && REGNO (operands[0]) != SP_REG"
  "")

(define_insn "pushhi1_h8300hs"
  [(parallel [(set (reg:SI SP_REG)
                   (plus:SI (reg:SI SP_REG) (const_int -4)))
              (set (mem:HI (plus:SI (reg:SI SP_REG) (const_int -2)))
                   (match_operand:HI 0 "register_operand" "r"))])]
  "(TARGET_H8300H || TARGET_H8300S)
   && REGNO (operands[0]) != SP_REG"
  "mov.l\\t%S0,@-er7"
  [(set_attr "length" "4")
   (set_attr "cc" "clobber")])

(define_expand "pushhi1"
  [(use (match_operand:HI 0 "register_operand" ""))]
  ""
  "
{
  if (TARGET_H8300)
    emit_insn (gen_pushhi1_h8300 (operands[0]));
  else
    emit_insn (gen_pushhi1_h8300hs (operands[0]));
  DONE;
}")

(define_insn ""
  [(set (match_operand:HI 0 "general_operand_dst" "=r,r,<,r,r,m")
        (match_operand:HI 1 "general_operand_src" "I,r>,r,i,m,r"))]
  "TARGET_H8300
   && (register_operand (operands[0], HImode)
       || register_operand (operands[1], HImode))
   && !(GET_CODE (operands[0]) == MEM
        && GET_CODE (XEXP (operands[0], 0)) == PRE_DEC
        && GET_CODE (XEXP (XEXP (operands[0], 0), 0)) == REG
        && GET_CODE (operands[1]) == REG
        && REGNO (XEXP (XEXP (operands[0], 0), 0)) == REGNO (operands[1]))"
  "@
   sub.w        %T0,%T0
   mov.w        %T1,%T0
   mov.w        %T1,%T0
   mov.w        %T1,%T0
   mov.w        %T1,%T0
   mov.w        %T1,%T0"
  [(set_attr "length" "2,2,2,4,4,4")
   (set_attr "cc" "set_zn,set_znv,set_znv,set_znv,set_znv,set_znv")])

(define_insn ""
  [(set (match_operand:HI 0 "general_operand_dst" "=r,r,<,r,r,m")
        (match_operand:HI 1 "general_operand_src" "I,r>,r,i,m,r"))]
  "(TARGET_H8300H || TARGET_H8300S)
   && (register_operand (operands[0], HImode)
       || register_operand (operands[1], HImode))"
  "@
   sub.w        %T0,%T0
   mov.w        %T1,%T0
   mov.w        %T1,%T0
   mov.w        %T1,%T0
   mov.w        %T1,%T0
   mov.w        %T1,%T0"
  [(set_attr "length" "2,2,2,4,8,8")
   (set_attr "cc" "set_zn,set_znv,set_znv,set_znv,set_znv,set_znv")])

(define_expand "movhi"
  [(set (match_operand:HI 0 "general_operand_dst" "")
        (match_operand:HI 1 "general_operand_src" ""))]
  ""
  "
{
  /* One of the ops has to be in a register.  */
  if (!register_operand (operand1, HImode)
      && !register_operand (operand0, HImode))
    {
      operands[1] = copy_to_mode_reg (HImode, operand1);
    }
}")

(define_insn "movstricthi"
  [(set (strict_low_part (match_operand:HI 0 "general_operand_dst" "+r,r,r,r"))
                         (match_operand:HI 1 "general_operand_src" "I,r,i,m"))]
  ""
  "@
   sub.w        %T0,%T0
   mov.w        %T1,%T0
   mov.w        %T1,%T0
   mov.w        %T1,%T0"
  [(set_attr_alternative "length"
     [(const_int 2) (const_int 2) (const_int 4)
      (if_then_else (eq_attr "cpu" "h8300") (const_int 4) (const_int 8))])
   (set_attr "cc" "set_zn,set_znv,set_znv,set_znv")])

;; movsi

(define_expand "movsi"
  [(set (match_operand:SI 0 "general_operand_dst" "")
        (match_operand:SI 1 "general_operand_src" ""))]
  ""
  "
{
  if (TARGET_H8300)
    {
      if (do_movsi (operands))
        DONE;
    }
  else
    {
      /* One of the ops has to be in a register.  */
      if (!register_operand (operand1, SImode)
          && !register_operand (operand0, SImode))
        {
          operands[1] = copy_to_mode_reg (SImode, operand1);
        }
    }
}")

(define_expand "movsf"
  [(set (match_operand:SF 0 "general_operand_dst" "")
        (match_operand:SF 1 "general_operand_src" ""))]
  ""
  "
{
  if (TARGET_H8300)
    {
      if (do_movsi (operands))
        DONE;
    }
  else
    {
      /* One of the ops has to be in a register.  */
      if (!register_operand (operand1, SFmode)
          && !register_operand (operand0, SFmode))
        {
          operands[1] = copy_to_mode_reg (SFmode, operand1);
        }
    }
}")

(define_insn "movsi_h8300"
  [(set (match_operand:SI 0 "general_operand_dst" "=r,r,r,o,<,r")
        (match_operand:SI 1 "general_operand_src" "I,r,io,r,r,>"))]
  "TARGET_H8300
   && (register_operand (operands[0], SImode)
       || register_operand (operands[1], SImode))"
  "*
{
  unsigned int rn = -1;
  switch (which_alternative)
    {
    case 0:
      return \"sub.w    %e0,%e0\;sub.w  %f0,%f0\";
    case 1:
      if (REGNO (operands[0]) < REGNO (operands[1]))
        return \"mov.w  %e1,%e0\;mov.w  %f1,%f0\";
      else
        return \"mov.w  %f1,%f0\;mov.w  %e1,%e0\";
    case 2:
      /* Make sure we don't trample the register we index with.  */
      if (GET_CODE (operands[1]) == MEM)
        {
          rtx inside = XEXP (operands[1], 0);
          if (REG_P (inside))
            {
              rn = REGNO (inside);
            }
          else if (GET_CODE (inside) == PLUS)
            {
              rtx lhs = XEXP (inside, 0);
              rtx rhs = XEXP (inside, 1);
              if (REG_P (lhs)) rn = REGNO (lhs);
              if (REG_P (rhs)) rn = REGNO (rhs);
            }
        }
      if (rn == REGNO (operands[0]))
        {
          /* Move the second word first.  */
          return \"mov.w        %f1,%f0\;mov.w  %e1,%e0\";
        }
      else
        {
          /* See if either half is zero.  If so, use sub.w to clear
             that half.  */
          if (GET_CODE (operands[1]) == CONST_INT)
            {
              if ((INTVAL (operands[1]) & 0xffff) == 0)
                return \"mov.w  %e1,%e0\;sub.w  %f0,%f0\";
              if (((INTVAL (operands[1]) >> 16) & 0xffff) == 0)
                return \"sub.w  %e0,%e0\;mov.w  %f1,%f0\";
            }
          return \"mov.w        %e1,%e0\;mov.w  %f1,%f0\";
        }
    case 3:
      return \"mov.w    %e1,%e0\;mov.w  %f1,%f0\";
    case 4:
      return \"mov.w    %f1,%T0\;mov.w  %e1,%T0\";
    case 5:
      return \"mov.w    %T1,%e0\;mov.w  %T1,%f0\";
    default:
      abort ();
    }
}"
  [(set_attr "length" "4,4,8,8,4,4")
   (set_attr "cc" "clobber")])

(define_insn "movsf_h8300"
  [(set (match_operand:SF 0 "general_operand_dst" "=r,r,r,o,<,r")
        (match_operand:SF 1 "general_operand_src" "I,r,io,r,r,>"))]
  "TARGET_H8300
   && (register_operand (operands[0], SFmode)
       || register_operand (operands[1], SFmode))"
  "*
{
  /* Copy of the movsi stuff.  */
  unsigned int rn = -1;
  switch (which_alternative)
    {
    case 0:
      return \"sub.w    %e0,%e0\;sub.w  %f0,%f0\";
    case 1:
      if (REGNO (operands[0]) < REGNO (operands[1]))
        return \"mov.w  %e1,%e0\;mov.w  %f1,%f0\";
      else
        return \"mov.w  %f1,%f0\;mov.w  %e1,%e0\";
    case 2:
      /* Make sure we don't trample the register we index with.  */
      if (GET_CODE (operands[1]) == MEM)
        {
          rtx inside = XEXP (operands[1], 0);
          if (REG_P (inside))
            {
              rn = REGNO (inside);
            }
          else if (GET_CODE (inside) == PLUS)
            {
              rtx lhs = XEXP (inside, 0);
              rtx rhs = XEXP (inside, 1);
              if (REG_P (lhs)) rn = REGNO (lhs);
              if (REG_P (rhs)) rn = REGNO (rhs);
            }
        }
      if (rn == REGNO (operands[0]))
        /* Move the second word first.  */
        return \"mov.w  %f1,%f0\;mov.w  %e1,%e0\";
      else
        /* Move the first word first.  */
        return \"mov.w  %e1,%e0\;mov.w  %f1,%f0\";

    case 3:
      return \"mov.w    %e1,%e0\;mov.w  %f1,%f0\";
    case 4:
      return \"mov.w    %f1,%T0\;mov.w  %e1,%T0\";
    case 5:
      return \"mov.w    %T1,%e0\;mov.w  %T1,%f0\";
    default:
      abort ();
    }
}"
  [(set_attr "length" "4,4,8,8,4,4")
   (set_attr "cc" "clobber")])

(define_insn "movsi_h8300hs"
  [(set (match_operand:SI 0 "general_operand_dst" "=r,r,r,<,r,r,m,*a,*a,r")
        (match_operand:SI 1 "general_operand_src" "I,r,i,r,>,m,r,I,r,*a"))]
  "(TARGET_H8300S || TARGET_H8300H)
   && (register_operand (operands[0], SImode)
       || register_operand (operands[1], SImode))
   && !(GET_CODE (operands[0]) == MEM
        && GET_CODE (XEXP (operands[0], 0)) == PRE_DEC
        && GET_CODE (XEXP (XEXP (operands[0], 0), 0)) == REG
        && GET_CODE (operands[1]) == REG
        && REGNO (XEXP (XEXP (operands[0], 0), 0)) == REGNO (operands[1]))"
  "*
{
  switch (which_alternative)
    {
    case 0:
      return \"sub.l    %S0,%S0\";
    case 7:
      return \"clrmac\";
    case 8:
      return \"clrmac\;ldmac %1,macl\";
    case 9:
      return \"stmac    macl,%0\";
    default:
      if (GET_CODE (operands[1]) == CONST_INT)
        {
          int val = INTVAL (operands[1]);

          /* Look for constants which can be made by adding an 8-bit
             number to zero in one of the two low bytes.  */
          if (val == (val & 0xff))
            {
              operands[1] = GEN_INT ((char) val & 0xff);
              return \"sub.l\\t%S0,%S0\;add.b\\t%1,%w0\";
            }

          if (val == (val & 0xff00))
            {
              operands[1] = GEN_INT ((char) (val >> 8) & 0xff);
              return \"sub.l\\t%S0,%S0\;add.b\\t%1,%x0\";
            }

          /* Look for constants that can be obtained by subs, inc, and
             dec to 0.  */
          switch (val & 0xffffffff)
            {
            case 0xffffffff:
              return \"sub.l\\t%S0,%S0\;subs\\t#1,%S0\";
            case 0xfffffffe:
              return \"sub.l\\t%S0,%S0\;subs\\t#2,%S0\";
            case 0xfffffffc:
              return \"sub.l\\t%S0,%S0\;subs\\t#4,%S0\";

            case 0x0000ffff:
              return \"sub.l\\t%S0,%S0\;dec.w\\t#1,%f0\";
            case 0x0000fffe:
              return \"sub.l\\t%S0,%S0\;dec.w\\t#2,%f0\";

            case 0xffff0000:
              return \"sub.l\\t%S0,%S0\;dec.w\\t#1,%e0\";
            case 0xfffe0000:
              return \"sub.l\\t%S0,%S0\;dec.w\\t#2,%e0\";

            case 0x00010000:
              return \"sub.l\\t%S0,%S0\;inc.w\\t#1,%e0\";
            case 0x00020000:
              return \"sub.l\\t%S0,%S0\;inc.w\\t#2,%e0\";
            }
        }
    }
   return \"mov.l       %S1,%S0\";
}"
  [(set_attr "length" "2,2,6,4,4,10,10,2,6,4")
   (set_attr "cc" "set_zn,set_znv,clobber,set_znv,set_znv,set_znv,set_znv,none_0hit,none_0hit,set_znv")])

(define_insn "movsf_h8300h"
  [(set (match_operand:SF 0 "general_operand_dst" "=r,r,r,m,<,r")
        (match_operand:SF 1 "general_operand_src" "I,r,im,r,r,>"))]
  "(TARGET_H8300H || TARGET_H8300S)
   && (register_operand (operands[0], SFmode)
       || register_operand (operands[1], SFmode))"
  "@
   sub.l        %S0,%S0
   mov.l        %S1,%S0
   mov.l        %S1,%S0
   mov.l        %S1,%S0
   mov.l        %S1,%S0
   mov.l        %S1,%S0"
  [(set_attr "length" "2,2,10,10,4,4")
   (set_attr "cc" "set_zn,set_znv,set_znv,set_znv,set_znv,set_znv")])
\f
;; ----------------------------------------------------------------------
;; TEST INSTRUCTIONS
;; ----------------------------------------------------------------------

(define_insn ""
  [(set (cc0) (zero_extract:HI (match_operand:QI 0 "bit_memory_operand" "r,U")
                               (const_int 1)
                               (match_operand 1 "const_int_operand" "n,n")))]
  "TARGET_H8300"
  "btst %Z1,%Y0"
  [(set_attr "length" "2,4")
   (set_attr "cc" "set_zn,set_zn")])

(define_insn ""
  [(set (cc0) (zero_extract:HI (match_operand:HI 0 "register_operand" "r")
                               (const_int 1)
                               (match_operand 1 "const_int_operand" "n")))]
  "TARGET_H8300"
  "btst %Z1,%Y0"
  [(set_attr "length" "2")
   (set_attr "cc" "set_zn")])

(define_insn "*tst_extzv_1_n"
  [(set (cc0)
        (zero_extract:SI (match_operand:QI 0 "general_operand_src" "r,U,mn>")
                         (const_int 1)
                         (match_operand 1 "const_int_operand" "n,n,n")))
   (clobber (match_scratch:QI 2 "=X,X,&r"))]
  "(TARGET_H8300H || TARGET_H8300S)"
  "@
   btst\\t%Z1,%Y0
   btst\\t%Z1,%Y0
   #"
  [(set_attr "length" "2,8,10")
   (set_attr "cc" "set_zn,set_zn,set_zn")])

(define_split
  [(set (cc0)
        (zero_extract:SI (match_operand:QI 0 "general_operand" "")
                         (const_int 1)
                         (match_operand 1 "const_int_operand" "")))
   (clobber (match_operand:QI 2 "register_operand" ""))]
  "(TARGET_H8300H || TARGET_H8300S)
   && reload_completed
   && !EXTRA_CONSTRAINT (operands[0], 'U')"
  [(set (match_dup 2)
        (match_dup 0))
   (parallel [(set (cc0) (zero_extract:SI (match_dup 2)
                                          (const_int 1)
                                          (match_dup 1)))
              (clobber (scratch:QI))])]
  "")

(define_insn ""
  [(set (cc0) (zero_extract:SI (match_operand:SI 0 "register_operand" "r")
                               (const_int 1)
                               (match_operand 1 "const_int_operand" "n")))]
  "(TARGET_H8300H || TARGET_H8300S)
   && INTVAL (operands[1]) <= 15"
  "btst %Z1,%Y0"
  [(set_attr "length" "2")
   (set_attr "cc" "set_zn")])

(define_insn_and_split "*tstsi_upper_bit"
  [(set (cc0)
        (zero_extract:SI (match_operand:SI 0 "register_operand" "r")
                         (const_int 1)
                         (match_operand 1 "const_int_operand" "n")))
   (clobber (match_scratch:SI 2 "=&r"))]
  "(TARGET_H8300H || TARGET_H8300S)
   && INTVAL (operands[1]) >= 16"
  "#"
  "&& reload_completed"
  [(set (match_dup 2)
        (ior:SI (and:SI (match_dup 2)
                        (const_int -65536))
                (lshiftrt:SI (match_dup 0)
                             (const_int 16))))
   (set (cc0)
        (zero_extract:SI (match_dup 2)
                         (const_int 1)
                         (match_dup 3)))]
  "operands[3] = GEN_INT (INTVAL (operands[1]) - 16);")

(define_insn ""
  [(set (cc0)
        (and:HI (match_operand:HI 0 "register_operand" "r")
                (match_operand:HI 1 "single_one_operand" "n")))]
  ""
  "*
{
  operands[1] = GEN_INT (INTVAL (operands[1]) & 0xffff);
  if (INTVAL (operands[1]) > 128)
    {
      operands[1] = GEN_INT (INTVAL (operands[1]) >> 8);
      return \"btst\\t%V1,%t0\";
    }
  return \"btst\\t%V1,%s0\";
}"
  [(set_attr "length" "2")
   (set_attr "cc" "set_zn")])

(define_insn ""
  [(set (cc0)
        (and:SI (match_operand:SI 0 "register_operand" "r")
                (match_operand:SI 1 "single_one_operand" "n")))]
  "(TARGET_H8300H || TARGET_H8300S)
   && (INTVAL (operands[1]) & 0xffff) != 0"
  "*
{
  operands[1] = GEN_INT (INTVAL (operands[1]) & 0xffff);
  if (INTVAL (operands[1]) > 128)
    {
      operands[1] = GEN_INT (INTVAL (operands[1]) >> 8);
      return \"btst\\t%V1,%x0\";
    }
  return \"btst\\t%V1,%w0\";
}"
  [(set_attr "length" "2")
   (set_attr "cc" "set_zn")])

(define_insn "tstqi"
  [(set (cc0) (match_operand:QI 0 "register_operand" "r"))]
  ""
  "mov.b        %X0,%X0"
  [(set_attr "length" "2")
   (set_attr "cc" "set_znv")])

(define_insn "tsthi"
  [(set (cc0) (match_operand:HI 0 "register_operand" "r"))]
  ""
  "mov.w        %T0,%T0"
  [(set_attr "length" "2")
   (set_attr "cc" "set_znv")])

(define_insn ""
  [(set (cc0)
        (and:HI (match_operand:HI 0 "register_operand" "r")
                (const_int -256)))]
  ""
  "mov.b        %t0,%t0"
  [(set_attr "length" "2")
   (set_attr "cc" "set_znv")])

(define_insn "tstsi"
  [(set (cc0) (match_operand:SI 0 "register_operand" "r"))]
  "TARGET_H8300H || TARGET_H8300S"
  "mov.l        %S0,%S0"
  [(set_attr "length" "2")
   (set_attr "cc" "set_znv")])

(define_insn ""
  [(set (cc0)
        (and:SI (match_operand:SI 0 "register_operand" "r")
                (const_int -65536)))]
  ""
  "mov.w        %e0,%e0"
  [(set_attr "length" "2")
   (set_attr "cc" "set_znv")])

(define_insn "cmpqi"
  [(set (cc0)
        (compare (match_operand:QI 0 "register_operand" "r")
                 (match_operand:QI 1 "nonmemory_operand" "rn")))]
  ""
  "cmp.b        %X1,%X0"
  [(set_attr "length" "2")
   (set_attr "cc" "compare")])

(define_expand "cmphi"
  [(set (cc0)
        (compare (match_operand:HI 0 "register_operand" "")
                 (match_operand:HI 1 "nonmemory_operand" "")))]
  ""
  "
{
  /* Force operand1 into a register if we're compiling
     for the H8/300.  */
  if (GET_CODE (operands[1]) != REG && TARGET_H8300)
    operands[1] = force_reg (HImode, operands[1]);
}")

(define_insn "*cmphi_h8300"
  [(set (cc0)
        (compare (match_operand:HI 0 "register_operand" "r")
                 (match_operand:HI 1 "register_operand" "r")))]
  "TARGET_H8300"
  "cmp.w        %T1,%T0"
  [(set_attr "length" "2")
   (set_attr "cc" "compare")])

(define_insn "*cmphi_h8300hs"
  [(set (cc0)
        (compare (match_operand:HI 0 "register_operand" "r,r")
                 (match_operand:HI 1 "nonmemory_operand" "r,n")))]
  "TARGET_H8300H || TARGET_H8300S"
  "cmp.w        %T1,%T0"
  [(set_attr "length" "2,4")
   (set_attr "cc" "compare,compare")])

(define_insn "cmpsi"
  [(set (cc0)
        (compare (match_operand:SI 0 "register_operand" "r,r")
                 (match_operand:SI 1 "nonmemory_operand" "r,i")))]
  "TARGET_H8300H || TARGET_H8300S"
  "cmp.l        %S1,%S0"
  [(set_attr "length" "2,6")
   (set_attr "cc" "compare,compare")])
\f
;; ----------------------------------------------------------------------
;; ADD INSTRUCTIONS
;; ----------------------------------------------------------------------

(define_insn "addqi3"
  [(set (match_operand:QI 0 "register_operand" "=r")
        (plus:QI (match_operand:QI 1 "register_operand" "%0")
                 (match_operand:QI 2 "nonmemory_operand" "rn")))]
  ""
  "add.b        %X2,%X0"
  [(set_attr "length" "2")
   (set_attr "cc" "set_zn")])

(define_expand "addhi3"
  [(set (match_operand:HI 0 "register_operand" "")
        (plus:HI (match_operand:HI 1 "register_operand" "")
                 (match_operand:HI 2 "nonmemory_operand" "")))]
  ""
  "")

(define_insn "*addhi3_h8300"
  [(set (match_operand:HI 0 "register_operand" "=r,r,r,r,r")
        (plus:HI (match_operand:HI 1 "register_operand" "%0,0,0,0,0")
                 (match_operand:HI 2 "nonmemory_operand" "L,N,J,n,r")))]
  "TARGET_H8300"
  "@
   adds %2,%T0
   subs %G2,%T0
   add.b        %t2,%t0
   add.b        %s2,%s0\;addx   %t2,%t0
   add.w        %T2,%T0"
  [(set_attr "length" "2,2,2,4,2")
   (set_attr "cc" "none_0hit,none_0hit,clobber,clobber,set_zn")])

;; This splitter is very important to make the stack adjustment
;; interrupt-safe.  The combination of add.b and addx is unsafe!
;;
;; We apply this split after the peephole2 pass so that we won't end
;; up creating too many adds/subs when a scratch register is
;; available, which is actually a common case because stack unrolling
;; tends to happen immediately after a function call.

(define_split
  [(set (match_operand:HI 0 "stack_pointer_operand" "")
        (plus:HI (match_dup 0)
                 (match_operand 1 "const_int_gt_2_operand" "")))]
  "TARGET_H8300 && flow2_completed"
  [(const_int 0)]
  "split_adds_subs (HImode, operands); DONE;")

(define_peephole2
  [(match_scratch:HI 2 "r")
   (set (match_operand:HI 0 "stack_pointer_operand" "")
        (plus:HI (match_dup 0)
                 (match_operand:HI 1 "const_int_ge_8_operand" "")))]
  "TARGET_H8300"
  [(set (match_dup 2)
        (match_dup 1))
   (set (match_dup 0)
        (plus:HI (match_dup 0)
                 (match_dup 2)))]
  "")

(define_insn "*addhi3_h8300hs"
  [(set (match_operand:HI 0 "register_operand" "=r,r,r,r,r")
        (plus:HI (match_operand:HI 1 "register_operand" "%0,0,0,0,0")
                 (match_operand:HI 2 "nonmemory_operand" "L,N,J,n,r")))]
  "TARGET_H8300H || TARGET_H8300S"
  "@
   adds %2,%S0
   subs %G2,%S0
   add.b        %t2,%t0
   add.w        %T2,%T0
   add.w        %T2,%T0"
  [(set_attr "length" "2,2,2,4,2")
   (set_attr "cc" "none_0hit,none_0hit,clobber,set_zn,set_zn")])

(define_insn "*addhi3_incdec"
  [(set (match_operand:HI 0 "register_operand" "=r,r")
        (unspec:HI [(match_operand:HI 1 "register_operand" "0,0")
                    (match_operand:HI 2 "incdec_operand" "M,O")]
                   UNSPEC_INCDEC))]
  "TARGET_H8300H || TARGET_H8300S"
  "@
   inc.w        %2,%T0
   dec.w        %G2,%T0"
  [(set_attr "length" "2,2")
   (set_attr "cc" "set_zn,set_zn")])

(define_split
  [(set (match_operand:HI 0 "register_operand" "")
        (plus:HI (match_dup 0)
                 (match_operand:HI 1 "two_insn_adds_subs_operand" "")))]
  ""
  [(const_int 0)]
  "split_adds_subs (HImode, operands); DONE;")

(define_expand "addsi3"
  [(set (match_operand:SI 0 "register_operand" "")
        (plus:SI (match_operand:SI 1 "register_operand" "")
                 (match_operand:SI 2 "nonmemory_operand" "")))]
  ""
  "")

(define_insn "addsi_h8300"
  [(set (match_operand:SI 0 "register_operand" "=r,r")
        (plus:SI (match_operand:SI 1 "register_operand" "%0,0")
                 (match_operand:SI 2 "nonmemory_operand" "n,r")))]
  "TARGET_H8300"
  "* return output_plussi (operands);"
  [(set (attr "length")
        (symbol_ref "compute_plussi_length (operands)"))
   (set (attr "cc")
        (symbol_ref "compute_plussi_cc (operands)"))])

(define_insn "addsi_h8300h"
  [(set (match_operand:SI 0 "register_operand" "=r,r")
        (plus:SI (match_operand:SI 1 "register_operand" "%0,0")
                 (match_operand:SI 2 "nonmemory_operand" "i,r")))]
  "TARGET_H8300H || TARGET_H8300S"
  "* return output_plussi (operands);"
  [(set (attr "length")
        (symbol_ref "compute_plussi_length (operands)"))
   (set (attr "cc")
        (symbol_ref "compute_plussi_cc (operands)"))])

(define_insn "*addsi3_incdec"
  [(set (match_operand:SI 0 "register_operand" "=r,r")
        (unspec:SI [(match_operand:SI 1 "register_operand" "0,0")
                    (match_operand:SI 2 "incdec_operand" "M,O")]
                   UNSPEC_INCDEC))]
  "TARGET_H8300H || TARGET_H8300S"
  "@
   inc.l        %2,%S0
   dec.l        %G2,%S0"
  [(set_attr "length" "2,2")
   (set_attr "cc" "set_zn,set_zn")])

(define_split
  [(set (match_operand:SI 0 "register_operand" "")
        (plus:SI (match_dup 0)
                 (match_operand:SI 1 "two_insn_adds_subs_operand" "")))]
  "TARGET_H8300H || TARGET_H8300S"
  [(const_int 0)]
  "split_adds_subs (SImode, operands); DONE;")

;; ----------------------------------------------------------------------
;; SUBTRACT INSTRUCTIONS
;; ----------------------------------------------------------------------

(define_insn "subqi3"
  [(set (match_operand:QI 0 "register_operand" "=r")
        (minus:QI (match_operand:QI 1 "register_operand" "0")
                  (match_operand:QI 2 "register_operand" "r")))]
  ""
  "sub.b        %X2,%X0"
  [(set_attr "length" "2")
   (set_attr "cc" "set_zn")])

(define_expand "subhi3"
  [(set (match_operand:HI 0 "register_operand" "")
        (minus:HI (match_operand:HI 1 "general_operand" "")
                  (match_operand:HI 2 "nonmemory_operand" "")))]
  ""
  "")

(define_insn ""
  [(set (match_operand:HI 0 "register_operand" "=r,&r")
        (minus:HI (match_operand:HI 1 "general_operand" "0,0")
                  (match_operand:HI 2 "nonmemory_operand" "r,n")))]
  "TARGET_H8300"
  "@
   sub.w        %T2,%T0
   add.b        %E2,%s0\;addx   %F2,%t0"
  [(set_attr "length" "2,4")
   (set_attr "cc" "set_zn,clobber")])

(define_insn ""
  [(set (match_operand:HI 0 "register_operand" "=r,&r")
        (minus:HI (match_operand:HI 1 "general_operand" "0,0")
                  (match_operand:HI 2 "nonmemory_operand" "r,n")))]
  "TARGET_H8300H || TARGET_H8300S"
  "@
   sub.w        %T2,%T0
   sub.w        %T2,%T0"
  [(set_attr "length" "2,4")
   (set_attr "cc" "set_zn,set_zn")])

(define_expand "subsi3"
  [(set (match_operand:SI 0 "register_operand" "")
        (minus:SI (match_operand:SI 1 "register_operand" "")
                  (match_operand:SI 2 "nonmemory_operand" "")))]
  ""
  "")

(define_insn "subsi3_h8300"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (minus:SI (match_operand:SI 1 "register_operand" "0")
                  (match_operand:SI 2 "register_operand" "r")))]
  "TARGET_H8300"
  "sub.w        %f2,%f0\;subx   %y2,%y0\;subx   %z2,%z0"
  [(set_attr "length" "6")
   (set_attr "cc" "clobber")])

(define_insn "subsi3_h8300h"
  [(set (match_operand:SI 0 "register_operand" "=r,r")
        (minus:SI (match_operand:SI 1 "general_operand" "0,0")
                  (match_operand:SI 2 "nonmemory_operand" "r,i")))]
  "TARGET_H8300H || TARGET_H8300S"
  "@
   sub.l        %S2,%S0
   sub.l        %S2,%S0"
  [(set_attr "length" "2,6")
   (set_attr "cc" "set_zn,set_zn")])
\f
;; ----------------------------------------------------------------------
;; MULTIPLY INSTRUCTIONS
;; ----------------------------------------------------------------------

;; Note that the H8/300 can only handle umulqihi3.

(define_insn "mulqihi3"
  [(set (match_operand:HI 0 "register_operand" "=r")
        (mult:HI (sign_extend:HI (match_operand:QI 1 "register_operand" "%0"))
                 (sign_extend:HI (match_operand:QI 2 "register_operand" "r"))))]
  "TARGET_H8300H || TARGET_H8300S"
  "mulxs.b      %X2,%T0"
  [(set_attr "length" "4")
   (set_attr "cc" "set_zn")])

(define_insn "mulhisi3"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (mult:SI (sign_extend:SI (match_operand:HI 1 "register_operand" "%0"))
                 (sign_extend:SI (match_operand:HI 2 "register_operand" "r"))))]
  "TARGET_H8300H || TARGET_H8300S"
  "mulxs.w      %T2,%S0"
  [(set_attr "length" "4")
   (set_attr "cc" "set_zn")])

(define_insn "umulqihi3"
  [(set (match_operand:HI 0 "register_operand" "=r")
        (mult:HI (zero_extend:HI (match_operand:QI 1 "register_operand" "%0"))
                 (zero_extend:HI (match_operand:QI 2 "register_operand" "r"))))]
  ""
  "mulxu        %X2,%T0"
  [(set_attr "length" "2")
   (set_attr "cc" "none_0hit")])

(define_insn "umulhisi3"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (mult:SI (zero_extend:SI (match_operand:HI 1 "register_operand" "%0"))
                 (zero_extend:SI (match_operand:HI 2 "register_operand" "r"))))]
  "TARGET_H8300H || TARGET_H8300S"
  "mulxu.w      %T2,%S0"
  [(set_attr "length" "2")
   (set_attr "cc" "none_0hit")])

;; This is a "bridge" instruction.  Combine can't cram enough insns
;; together to crate a MAC instruction directly, but it can create
;; this instruction, which then allows combine to create the real
;; MAC insn.
;;
;; Unfortunately, if combine doesn't create a MAC instruction, this
;; insn must generate reasonably correct code.  Egad.
(define_insn ""
  [(set (match_operand:SI 0 "register_operand" "=a")
        (mult:SI
          (sign_extend:SI
            (mem:HI (post_inc:SI (match_operand:SI 1 "register_operand" "r"))))
          (sign_extend:SI
            (mem:HI (post_inc:SI (match_operand:SI 2 "register_operand" "r"))))))]
  "TARGET_MAC"
  "clrmac\;mac  @%2+,@%1+"
  [(set_attr "length" "6")
   (set_attr "cc" "none_0hit")])

(define_insn ""
  [(set (match_operand:SI 0 "register_operand" "=a")
        (plus:SI (mult:SI
          (sign_extend:SI (mem:HI
            (post_inc:SI (match_operand:SI 1 "register_operand" "r"))))
          (sign_extend:SI (mem:HI
            (post_inc:SI (match_operand:SI 2 "register_operand" "r")))))
              (match_operand:SI 3 "register_operand" "0")))]
  "TARGET_MAC"
  "mac  @%2+,@%1+"
  [(set_attr "length" "4")
   (set_attr "cc" "none_0hit")])

;; ----------------------------------------------------------------------
;; DIVIDE/MOD INSTRUCTIONS
;; ----------------------------------------------------------------------

(define_insn "udivmodqi4"
  [(set (match_operand:QI 0 "register_operand" "=r")
        (truncate:QI
          (udiv:HI
            (match_operand:HI 1 "register_operand" "0")
            (zero_extend:HI (match_operand:QI 2 "register_operand" "r")))))
   (set (match_operand:QI 3 "register_operand" "=r")
        (truncate:QI
          (umod:HI
            (match_dup 1)
            (zero_extend:HI (match_dup 2)))))]
  ""
  "*
{
  if (find_reg_note (insn, REG_UNUSED, operands[3]))
    return \"divxu.b\\t%X2,%T0\";
  else
    return \"divxu.b\\t%X2,%T0\;mov.b\\t%t0,%s3\";
}"
  [(set_attr "length" "4")
   (set_attr "cc" "clobber")])

(define_insn "divmodqi4"
  [(set (match_operand:QI 0 "register_operand" "=r")
        (truncate:QI
          (div:HI
            (match_operand:HI 1 "register_operand" "0")
            (sign_extend:HI (match_operand:QI 2 "register_operand" "r")))))
   (set (match_operand:QI 3 "register_operand" "=r")
        (truncate:QI
          (mod:HI
            (match_dup 1)
            (sign_extend:HI (match_dup 2)))))]
  "TARGET_H8300H || TARGET_H8300S"
  "*
{
  if (find_reg_note (insn, REG_UNUSED, operands[3]))
    return \"divxs.b\\t%X2,%T0\";
  else
    return \"divxs.b\\t%X2,%T0\;mov.b\\t%t0,%s3\";
}"
  [(set_attr "length" "6")
   (set_attr "cc" "clobber")])

(define_insn "udivmodhi4"
  [(set (match_operand:HI 0 "register_operand" "=r")
        (truncate:HI
          (udiv:SI
            (match_operand:SI 1 "register_operand" "0")
            (zero_extend:SI (match_operand:HI 2 "register_operand" "r")))))
   (set (match_operand:HI 3 "register_operand" "=r")
        (truncate:HI
          (umod:SI
            (match_dup 1)
            (zero_extend:SI (match_dup 2)))))]
  "TARGET_H8300H || TARGET_H8300S"
  "*
{
  if (find_reg_note (insn, REG_UNUSED, operands[3]))
    return \"divxu.w\\t%T2,%S0\";
  else
    return \"divxu.w\\t%T2,%S0\;mov.w\\t%e0,%f3\";
}"
  [(set_attr "length" "4")
   (set_attr "cc" "clobber")])

(define_insn "divmodhi4"
  [(set (match_operand:HI 0 "register_operand" "=r")
        (truncate:HI
          (div:SI
            (match_operand:SI 1 "register_operand" "0")
            (sign_extend:SI (match_operand:HI 2 "register_operand" "r")))))
   (set (match_operand:HI 3 "register_operand" "=r")
        (truncate:HI
          (mod:SI
            (match_dup 1)
            (sign_extend:SI (match_dup 2)))))]
  "TARGET_H8300H || TARGET_H8300S"
  "*
{
  if (find_reg_note (insn, REG_UNUSED, operands[3]))
    return \"divxs.w\\t%T2,%S0\";
  else
    return \"divxs.w\\t%T2,%S0\;mov.w\\t%e0,%f3\";
}"
  [(set_attr "length" "6")
   (set_attr "cc" "clobber")])
\f
;; ----------------------------------------------------------------------
;; AND INSTRUCTIONS
;; ----------------------------------------------------------------------

(define_insn ""
  [(set (match_operand:QI 0 "bit_operand" "=r,U")
        (and:QI (match_operand:QI 1 "bit_operand" "%0,0")
                (match_operand:QI 2 "nonmemory_operand" "rn,n")))]
  "register_operand (operands[0], QImode)
   || single_zero_operand (operands[2], QImode)"
  "@
   and  %X2,%X0
   bclr %W2,%R0"
  [(set_attr "length" "2,8")
   (set_attr "adjust_length" "no")
   (set_attr "cc" "set_znv,none_0hit")])

(define_expand "andqi3"
  [(set (match_operand:QI 0 "bit_operand" "")
        (and:QI (match_operand:QI 1 "bit_operand" "")
                (match_operand:QI 2 "nonmemory_operand" "")))]
  ""
  "
{
  if (fix_bit_operand (operands, 0, AND))
    DONE;
}")

(define_expand "andhi3"
  [(set (match_operand:HI 0 "register_operand" "")
        (and:HI (match_operand:HI 1 "register_operand" "")
                (match_operand:HI 2 "nonmemory_operand" "")))]
  ""
  "")

(define_insn "*andorqi3"
  [(set (match_operand:QI 0 "register_operand" "=r")
        (ior:QI (and:QI (match_operand:QI 2 "register_operand" "r")
                        (match_operand:QI 3 "single_one_operand" "n"))
                (match_operand:QI 1 "register_operand" "0")))]
  ""
  "bld\\t%V3,%X2\;bor\\t%V3,%X0\;bst\\t%V3,%X0"
  [(set_attr "length" "6")
   (set_attr "cc" "clobber")])

(define_insn "*andorhi3"
  [(set (match_operand:HI 0 "register_operand" "=r")
        (ior:HI (and:HI (match_operand:HI 2 "register_operand" "r")
                        (match_operand:HI 3 "single_one_operand" "n"))
                (match_operand:HI 1 "register_operand" "0")))]
  ""
  "*
{
  operands[3] = GEN_INT (INTVAL (operands[3]) & 0xffff);
  if (INTVAL (operands[3]) > 128)
    {
      operands[3] = GEN_INT (INTVAL (operands[3]) >> 8);
      return \"bld\\t%V3,%t2\;bor\\t%V3,%t0\;bst\\t%V3,%t0\";
    }
  return \"bld\\t%V3,%s2\;bor\\t%V3,%s0\;bst\\t%V3,%s0\";
}"
  [(set_attr "length" "6")
   (set_attr "cc" "clobber")])

(define_insn "*andorsi3"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (ior:SI (and:SI (match_operand:SI 2 "register_operand" "r")
                        (match_operand:SI 3 "single_one_operand" "n"))
                (match_operand:SI 1 "register_operand" "0")))]
  "(INTVAL (operands[3]) & 0xffff) != 0"
  "*
{
  operands[3] = GEN_INT (INTVAL (operands[3]) & 0xffff);
  if (INTVAL (operands[3]) > 128)
    {
      operands[3] = GEN_INT (INTVAL (operands[3]) >> 8);
      return \"bld\\t%V3,%x2\;bor\\t%V3,%x0\;bst\\t%V3,%x0\";
    }
  return \"bld\\t%V3,%w2\;bor\\t%V3,%w0\;bst\\t%V3,%w0\";
}"
  [(set_attr "length" "6")
   (set_attr "cc" "clobber")])

(define_insn "*andorsi3_shift_8"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (ior:SI (and:SI (ashift:SI (match_operand:SI 2 "register_operand" "r")
                                   (const_int 8))
                        (const_int 65280))
                (match_operand:SI 1 "register_operand" "0")))]
  ""
  "or.b\\t%w2,%x0"
  [(set_attr "length" "2")
   (set_attr "cc" "clobber")])

(define_expand "andsi3"
  [(set (match_operand:SI 0 "register_operand" "")
        (and:SI (match_operand:SI 1 "register_operand" "")
                (match_operand:SI 2 "nonmemory_operand" "")))]
  ""
  "")

;; ----------------------------------------------------------------------
;; OR INSTRUCTIONS
;; ----------------------------------------------------------------------

(define_insn ""
  [(set (match_operand:QI 0 "bit_operand" "=r,U")
        (ior:QI (match_operand:QI 1 "bit_operand" "%0,0")
                (match_operand:QI 2 "nonmemory_operand" "rn,n")))]
  "register_operand (operands[0], QImode)
   || single_one_operand (operands[2], QImode)"
  "@
   or\\t%X2,%X0
   bset\\t%V2,%R0"
  [(set_attr "length" "2,8")
   (set_attr "adjust_length" "no")
   (set_attr "cc" "set_znv,none_0hit")])

(define_expand "iorqi3"
  [(set (match_operand:QI 0 "bit_operand" "")
        (ior:QI (match_operand:QI 1 "bit_operand" "")
                (match_operand:QI 2 "nonmemory_operand" "")))]
  ""
  "
{
  if (fix_bit_operand (operands, 1, IOR))
    DONE;
}")

(define_expand "iorhi3"
  [(set (match_operand:HI 0 "register_operand" "")
        (ior:HI (match_operand:HI 1 "register_operand" "")
                (match_operand:HI 2 "nonmemory_operand" "")))]
  ""
  "")

(define_expand "iorsi3"
  [(set (match_operand:SI 0 "register_operand" "")
        (ior:SI (match_operand:SI 1 "register_operand" "")
                (match_operand:SI 2 "nonmemory_operand" "")))]
  ""
  "")

;; ----------------------------------------------------------------------
;; XOR INSTRUCTIONS
;; ----------------------------------------------------------------------

(define_insn ""
  [(set (match_operand:QI 0 "bit_operand" "=r,U")
        (xor:QI (match_operand:QI 1 "bit_operand" "%0,0")
                (match_operand:QI 2 "nonmemory_operand" "rn,n")))]
  "register_operand (operands[0], QImode)
   || single_one_operand (operands[2], QImode)"
  "@
   xor\\t%X2,%X0
   bnot\\t%V2,%R0"
  [(set_attr "length" "2,8")
   (set_attr "adjust_length" "no")
   (set_attr "cc" "set_znv,none_0hit")])

(define_expand "xorqi3"
  [(set (match_operand:QI 0 "bit_operand" "")
        (xor:QI (match_operand:QI 1 "bit_operand" "")
                (match_operand:QI 2 "nonmemory_operand" "")))]
  ""
  "
{
  if (fix_bit_operand (operands, 1, XOR))
    DONE;
}")

(define_expand "xorhi3"
  [(set (match_operand:HI 0 "register_operand" "")
        (xor:HI (match_operand:HI 1 "register_operand" "")
                (match_operand:HI 2 "nonmemory_operand" "")))]
  ""
  "")

(define_expand "xorsi3"
  [(set (match_operand:SI 0 "register_operand" "")
        (xor:SI (match_operand:SI 1 "register_operand" "")
                (match_operand:SI 2 "nonmemory_operand" "")))]
  ""
  "")

;; ----------------------------------------------------------------------
;; {AND,IOR,XOR}{HI3,SI3} PATTERNS
;; ----------------------------------------------------------------------

(define_insn ""
  [(set (match_operand:HI 0 "register_operand" "=r")
        (match_operator:HI 3 "bit_operator"
          [(match_operand:HI 1 "register_operand" "%0")
           (match_operand:HI 2 "nonmemory_operand" "rn")]))]
  ""
  "* return output_logical_op (HImode, operands);"
  [(set (attr "length")
        (symbol_ref "compute_logical_op_length (HImode, operands)"))
   (set (attr "cc")
        (symbol_ref "compute_logical_op_cc (HImode, operands)"))])

(define_insn ""
  [(set (match_operand:SI 0 "register_operand" "=r")
        (match_operator:SI 3 "bit_operator"
          [(match_operand:SI 1 "register_operand" "%0")
           (match_operand:SI 2 "nonmemory_operand" "rn")]))]
  ""
  "* return output_logical_op (SImode, operands);"
  [(set (attr "length")
        (symbol_ref "compute_logical_op_length (SImode, operands)"))
   (set (attr "cc")
        (symbol_ref "compute_logical_op_cc (SImode, operands)"))])
\f
;; ----------------------------------------------------------------------
;; NEGATION INSTRUCTIONS
;; ----------------------------------------------------------------------

(define_insn "negqi2"
  [(set (match_operand:QI 0 "register_operand" "=r")
        (neg:QI (match_operand:QI 1 "register_operand" "0")))]
  ""
  "neg  %X0"
  [(set_attr "length" "2")
   (set_attr "cc" "set_zn")])

(define_expand "neghi2"
  [(set (match_operand:HI 0 "register_operand" "")
        (neg:HI (match_operand:HI 1 "register_operand" "")))]
  ""
  "
{
  if (TARGET_H8300)
    {
      emit_insn (gen_neghi2_h8300 (operands[0], operands[1]));
      DONE;
    }
}")

(define_expand "neghi2_h8300"
  [(set (match_dup 2)
        (not:HI (match_operand:HI 1 "register_operand" "")))
   (set (match_dup 2) (plus:HI (match_dup 2) (const_int 1)))
   (set (match_operand:HI 0 "register_operand" "")
        (match_dup 2))]
  ""
  "operands[2] = gen_reg_rtx (HImode);")

(define_insn "neghi2_h8300h"
  [(set (match_operand:HI 0 "register_operand" "=r")
        (neg:HI (match_operand:HI 1 "register_operand" "0")))]
  "TARGET_H8300H || TARGET_H8300S"
  "neg  %T0"
  [(set_attr "length" "2")
   (set_attr "cc" "set_zn")])

(define_expand "negsi2"
  [(set (match_operand:SI 0 "register_operand" "")
        (neg:SI (match_operand:SI 1 "register_operand" "")))]
  ""
  "
{
  if (TARGET_H8300)
    {
      emit_insn (gen_negsi2_h8300 (operands[0], operands[1]));
      DONE;
    }
}")

(define_expand "negsi2_h8300"
  [(set (match_dup 2)
        (not:SI (match_operand:SI 1 "register_operand" "")))
   (set (match_dup 2) (plus:SI (match_dup 2) (const_int 1)))
   (set (match_operand:SI 0 "register_operand" "")
        (match_dup 2))]
  ""
  "operands[2] = gen_reg_rtx (SImode);")

(define_insn "negsi2_h8300h"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (neg:SI (match_operand:SI 1 "register_operand" "0")))]
  "TARGET_H8300H || TARGET_H8300S"
  "neg  %S0"
  [(set_attr "length" "2")
   (set_attr "cc" "set_zn")])

(define_expand "negsf2"
  [(set (match_operand:SF 0 "register_operand" "")
        (neg:SF (match_operand:SF 1 "register_operand" "")))]
  ""
  "")

(define_insn "*negsf2_h8300"
  [(set (match_operand:SF 0 "register_operand" "=r")
        (neg:SF (match_operand:SF 1 "register_operand" "0")))]
  "TARGET_H8300"
  "xor.b\\t#128,%z0"
  [(set_attr "cc" "clobber")
   (set_attr "length" "2")])

(define_insn "*negsf2_h8300hs"
  [(set (match_operand:SF 0 "register_operand" "=r")
        (neg:SF (match_operand:SF 1 "register_operand" "0")))]
  "TARGET_H8300H || TARGET_H8300S"
  "xor.w\\t#32768,%e0"
  [(set_attr "cc" "clobber")
   (set_attr "length" "4")])
\f
;; ----------------------------------------------------------------------
;; ABSOLUTE VALUE INSTRUCTIONS
;; ----------------------------------------------------------------------

(define_expand "abssf2"
  [(set (match_operand:SF 0 "register_operand" "")
        (abs:SF (match_operand:SF 1 "register_operand" "")))]
  ""
  "")

(define_insn "*abssf2_h8300"
  [(set (match_operand:SF 0 "register_operand" "=r")
        (abs:SF (match_operand:SF 1 "register_operand" "0")))]
  "TARGET_H8300"
  "and.b\\t#127,%z0"
  [(set_attr "cc" "clobber")
   (set_attr "length" "2")])

(define_insn "*abssf2_h8300hs"
  [(set (match_operand:SF 0 "register_operand" "=r")
        (abs:SF (match_operand:SF 1 "register_operand" "0")))]
  "TARGET_H8300H || TARGET_H8300S"
  "and.w\\t#32767,%e0"
  [(set_attr "cc" "clobber")
   (set_attr "length" "4")])
\f
;; ----------------------------------------------------------------------
;; NOT INSTRUCTIONS
;; ----------------------------------------------------------------------

(define_insn "one_cmplqi2"
  [(set (match_operand:QI 0 "register_operand" "=r")
        (not:QI (match_operand:QI 1 "register_operand" "0")))]
  ""
  "not  %X0"
  [(set_attr "length" "2")
   (set_attr "cc" "set_znv")])

(define_expand "one_cmplhi2"
  [(set (match_operand:HI 0 "register_operand" "=r")
        (not:HI (match_operand:HI 1 "register_operand" "0")))]
  ""
  "")

(define_insn ""
  [(set (match_operand:HI 0 "register_operand" "=r")
        (not:HI (match_operand:HI 1 "register_operand" "0")))]
  "TARGET_H8300"
  "not  %s0\;not        %t0"
  [(set_attr "cc" "clobber")
   (set_attr "length" "4")])

(define_insn ""
  [(set (match_operand:HI 0 "register_operand" "=r")
        (not:HI (match_operand:HI 1 "register_operand" "0")))]
  "TARGET_H8300H || TARGET_H8300S"
  "not  %T0"
  [(set_attr "cc" "set_znv")
   (set_attr "length" "2")])

(define_expand "one_cmplsi2"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (not:SI (match_operand:SI 1 "register_operand" "0")))]
  ""
  "")

(define_insn ""
  [(set (match_operand:SI 0 "register_operand" "=r")
        (not:SI (match_operand:SI 1 "register_operand" "0")))]
  "TARGET_H8300"
  "not  %w0\;not        %x0\;not        %y0\;not        %z0"
  [(set_attr "cc" "clobber")
   (set_attr "length" "8")])

(define_insn ""
  [(set (match_operand:SI 0 "register_operand" "=r")
        (not:SI (match_operand:SI 1 "register_operand" "0")))]
  "TARGET_H8300H || TARGET_H8300S"
  "not  %S0"
  [(set_attr "cc" "set_znv")
   (set_attr "length" "2")])
\f
;; ----------------------------------------------------------------------
;; JUMP INSTRUCTIONS
;; ----------------------------------------------------------------------

;; Conditional jump instructions

(define_expand "ble"
  [(set (pc)
        (if_then_else (le (cc0)
                          (const_int 0))
                      (label_ref (match_operand 0 "" ""))
                      (pc)))]
  ""
  "")

(define_expand "bleu"
  [(set (pc)
        (if_then_else (leu (cc0)
                           (const_int 0))
                      (label_ref (match_operand 0 "" ""))
                      (pc)))]
  ""
  "")

(define_expand "bge"
  [(set (pc)
        (if_then_else (ge (cc0)
                          (const_int 0))
                      (label_ref (match_operand 0 "" ""))
                      (pc)))]
  ""
  "")

(define_expand "bgeu"
  [(set (pc)
        (if_then_else (geu (cc0)
                           (const_int 0))
                      (label_ref (match_operand 0 "" ""))
                      (pc)))]
  ""
  "")

(define_expand "blt"
  [(set (pc)
        (if_then_else (lt (cc0)
                          (const_int 0))
                      (label_ref (match_operand 0 "" ""))
                      (pc)))]
  ""
  "")

(define_expand "bltu"
  [(set (pc)
        (if_then_else (ltu (cc0)
                           (const_int 0))
                      (label_ref (match_operand 0 "" ""))
                      (pc)))]
  ""
  "")

(define_expand "bgt"
  [(set (pc)
        (if_then_else (gt (cc0)
                          (const_int 0))
                      (label_ref (match_operand 0 "" ""))
                      (pc)))]
  ""
  "")

(define_expand "bgtu"
  [(set (pc)
        (if_then_else (gtu (cc0)
                           (const_int 0))
                      (label_ref (match_operand 0 "" ""))
                      (pc)))]
  ""
  "")

(define_expand "beq"
  [(set (pc)
        (if_then_else (eq (cc0)
                          (const_int 0))
                      (label_ref (match_operand 0 "" ""))
                      (pc)))]
  ""
  "")

(define_expand "bne"
  [(set (pc)
        (if_then_else (ne (cc0)
                          (const_int 0))
                      (label_ref (match_operand 0 "" ""))
                      (pc)))]
  ""
  "")

(define_insn "branch_true"
  [(set (pc)
        (if_then_else (match_operator 1 "comparison_operator"
                                      [(cc0) (const_int 0)])
                      (label_ref (match_operand 0 "" ""))
                      (pc)))]
  ""
  "*
{
  if ((cc_status.flags & CC_OVERFLOW_UNUSABLE) != 0
      && (GET_CODE (operands[1]) == GT
          || GET_CODE (operands[1]) == GE
          || GET_CODE (operands[1]) == LE
          || GET_CODE (operands[1]) == LT))
    {
      cc_status.flags &= ~CC_OVERFLOW_UNUSABLE;
      return 0;
    }

  if (get_attr_length (insn) == 2)
    return \"b%j1       %l0\";
  else if (get_attr_length (insn) == 4)
    return \"b%j1       %l0:16\";
  else
    return \"b%k1       .Lh8BR%=\;jmp   @%l0\\n.Lh8BR%=:\";
}"
 [(set_attr "type" "branch")
   (set_attr "cc" "none")])

(define_insn "branch_false"
  [(set (pc)
        (if_then_else (match_operator 1 "comparison_operator"
                                      [(cc0) (const_int 0)])
                      (pc)
                      (label_ref (match_operand 0 "" ""))))]
  ""
  "*
{
  if ((cc_status.flags & CC_OVERFLOW_UNUSABLE) != 0
      && (GET_CODE (operands[1]) == GT
          || GET_CODE (operands[1]) == GE
          || GET_CODE (operands[1]) == LE
          || GET_CODE (operands[1]) == LT))
    {
      cc_status.flags &= ~CC_OVERFLOW_UNUSABLE;
      return 0;
    }

  if (get_attr_length (insn) == 2)
    return \"b%k1       %l0\";
  else if (get_attr_length (insn) == 4)
    return \"b%k1       %l0:16\";
  else
    return \"b%j1       .Lh8BR%=\;jmp   @%l0\\n.Lh8BR%=:\";
}"
  [(set_attr "type" "branch")
   (set_attr "cc" "none")])

;; Unconditional and other jump instructions.

(define_insn "jump"
  [(set (pc)
        (label_ref (match_operand 0 "" "")))]
  ""
  "*
{
  if (get_attr_length (insn) == 2)
    return \"bra        %l0\";
  else if (get_attr_length (insn) == 4)
    return \"bra        %l0:16\";
  else
    return \"jmp        @%l0\";
}"
  [(set_attr "type" "branch")
   (set_attr "cc" "none")])

;; This is a define expand, because pointers may be either 16 or 32 bits.

(define_expand "tablejump"
  [(parallel [(set (pc) (match_operand 0 "register_operand" ""))
              (use (label_ref (match_operand 1 "" "")))])]
  ""
  "")

(define_insn "tablejump_h8300"
  [(set (pc) (match_operand:HI 0 "register_operand" "r"))
   (use (label_ref (match_operand 1 "" "")))]
  "TARGET_H8300"
  "jmp  @%0"
  [(set_attr "cc" "none")
   (set_attr "length" "2")])

(define_insn "tablejump_h8300h"
  [(set (pc) (match_operand:SI 0 "register_operand" "r"))
   (use (label_ref (match_operand 1 "" "")))]
  "TARGET_H8300H || TARGET_H8300S"
  "jmp  @%0"
  [(set_attr "cc" "none")
   (set_attr "length" "2")])

(define_insn "tablejump_normal_mode"
   [(set (pc) (match_operand:HI 0 "register_operand" "r"))
    (use (label_ref (match_operand 1 "" "")))]
   "(TARGET_H8300H || TARGET_H8300S) && TARGET_NORMAL_MODE"
   "jmp @%S0"
   [(set_attr "cc" "none")
    (set_attr "length" "2")])

;; This is a define expand, because pointers may be either 16 or 32 bits.

(define_expand "indirect_jump"
  [(set (pc) (match_operand 0 "jump_address_operand" ""))]
  ""
  "")

(define_insn "indirect_jump_h8300"
  [(set (pc) (match_operand:HI 0 "jump_address_operand" "Vr"))]
  "TARGET_H8300"
  "jmp  @%0"
  [(set_attr "cc" "none")
   (set_attr "length" "2")])

(define_insn "indirect_jump_h8300h"
  [(set (pc) (match_operand:SI 0 "jump_address_operand" "Vr"))]
  "TARGET_H8300H || TARGET_H8300S"
  "jmp @%0"
  [(set_attr "cc" "none")
   (set_attr "length" "2")])

(define_insn "indirect_jump_normal_mode"
  [(set (pc) (match_operand:HI 0 "jump_address_operand" "Vr"))]
  "(TARGET_H8300H || TARGET_H8300S) && TARGET_NORMAL_MODE"
  "jmp @%S0"
  [(set_attr "cc" "none")
   (set_attr "length" "2")])

;; Call subroutine with no return value.

;; ??? Even though we use HImode here, this works on the H8/300H and H8S.

(define_insn "call"
  [(call (match_operand:QI 0 "call_insn_operand" "or")
         (match_operand:HI 1 "general_operand" "g"))]
  ""
  "*
{
  if (GET_CODE (XEXP (operands[0], 0)) == SYMBOL_REF
      && SYMBOL_REF_FLAG (XEXP (operands[0], 0)))
    return \"jsr\\t@%0:8\";
  else
    return \"jsr\\t%0\";
}"
  [(set_attr "cc" "clobber")
   (set (attr "length")
        (if_then_else (match_operand:QI 0 "small_call_insn_operand" "")
                      (const_int 4)
                      (const_int 8)))])

;; Call subroutine, returning value in operand 0
;; (which must be a hard register).

;; ??? Even though we use HImode here, this works on the H8/300H and H8S.

(define_insn "call_value"
  [(set (match_operand 0 "" "=r")
        (call (match_operand:QI 1 "call_insn_operand" "or")
              (match_operand:HI 2 "general_operand" "g")))]
  ""
  "*
{
  if (GET_CODE (XEXP (operands[1], 0)) == SYMBOL_REF
      && SYMBOL_REF_FLAG (XEXP (operands[1], 0)))
    return \"jsr\\t@%1:8\";
  else
    return \"jsr\\t%1\";
}"
  [(set_attr "cc" "clobber")
   (set (attr "length")
        (if_then_else (match_operand:QI 0 "small_call_insn_operand" "")
                      (const_int 4)
                      (const_int 8)))])

(define_insn "nop"
  [(const_int 0)]
  ""
  "nop"
  [(set_attr "cc" "none")
   (set_attr "length" "2")])
\f
;; ----------------------------------------------------------------------
;; PROLOGUE/EPILOGUE-RELATED INSTRUCTIONS
;; ----------------------------------------------------------------------

(define_expand "push_h8300"
  [(set (mem:HI (pre_dec:HI (reg:HI SP_REG)))
        (match_operand:HI 0 "register_operand" "=r"))]
        
  "TARGET_H8300"
  "")

(define_expand "push_h8300hs"
  [(set (mem:SI (pre_dec:SI (reg:SI SP_REG)))
        (match_operand:SI 0 "register_operand" "=r"))]
  "TARGET_H8300H && TARGET_H8300S"
  "")

(define_expand "pop_h8300"
  [(set (match_operand:HI 0 "register_operand" "=r")
        (mem:HI (post_inc:HI (reg:HI SP_REG))))]
  "TARGET_H8300"
  "")

(define_expand "pop_h8300hs"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (mem:SI (post_inc:SI (reg:SI SP_REG))))]
  "TARGET_H8300H && TARGET_H8300S"
  "")

(define_insn "stm_h8300s_2"
  [(parallel
     [(set (reg:SI SP_REG)
           (plus:SI (reg:SI SP_REG) (const_int -8)))
      (set (mem:SI (plus:SI (reg:SI SP_REG) (const_int -4)))
           (match_operand:SI 0 "register_operand" ""))
      (set (mem:SI (plus:SI (reg:SI SP_REG) (const_int -8)))
           (match_operand:SI 1 "register_operand" ""))])]
  "TARGET_H8300S
   && ((REGNO (operands[0]) == 0 && REGNO (operands[1]) == 1)
       || (REGNO (operands[0]) == 2 && REGNO (operands[1]) == 3)
       || (REGNO (operands[0]) == 4 && REGNO (operands[1]) == 5))"
  "stm.l\\t%S0-%S1,@-er7"
  [(set_attr "cc" "none")
   (set_attr "length" "4")])

(define_insn "stm_h8300s_3"
  [(parallel
     [(set (reg:SI SP_REG)
           (plus:SI (reg:SI SP_REG) (const_int -12)))
      (set (mem:SI (plus:SI (reg:SI SP_REG) (const_int -4)))
           (match_operand:SI 0 "register_operand" ""))
      (set (mem:SI (plus:SI (reg:SI SP_REG) (const_int -8)))
           (match_operand:SI 1 "register_operand" ""))
      (set (mem:SI (plus:SI (reg:SI SP_REG) (const_int -12)))
           (match_operand:SI 2 "register_operand" ""))])]
  "TARGET_H8300S
   && ((REGNO (operands[0]) == 0
        && REGNO (operands[1]) == 1
        && REGNO (operands[2]) == 2)
       || (REGNO (operands[0]) == 4
           && REGNO (operands[1]) == 5
           && REGNO (operands[2]) == 6))"
  "stm.l\\t%S0-%S2,@-er7"
  [(set_attr "cc" "none")
   (set_attr "length" "4")])

(define_insn "stm_h8300s_4"
  [(parallel
     [(set (reg:SI SP_REG)
           (plus:SI (reg:SI SP_REG) (const_int -16)))
      (set (mem:SI (plus:SI (reg:SI SP_REG) (const_int -4)))
           (match_operand:SI 0 "register_operand" ""))
      (set (mem:SI (plus:SI (reg:SI SP_REG) (const_int -8)))
           (match_operand:SI 1 "register_operand" ""))
      (set (mem:SI (plus:SI (reg:SI SP_REG) (const_int -12)))
           (match_operand:SI 2 "register_operand" ""))
      (set (mem:SI (plus:SI (reg:SI SP_REG) (const_int -16)))
           (match_operand:SI 3 "register_operand" ""))])]
  "TARGET_H8300S
   && REGNO (operands[0]) == 0
   && REGNO (operands[1]) == 1
   && REGNO (operands[2]) == 2
   && REGNO (operands[3]) == 3"
  "stm.l\\t%S0-%S3,@-er7"
  [(set_attr "cc" "none")
   (set_attr "length" "4")])

(define_insn "ldm_h8300s_2"
  [(parallel
     [(set (reg:SI SP_REG)
           (plus:SI (reg:SI SP_REG) (const_int 8)))
      (set (mem:SI (plus:SI (reg:SI SP_REG) (const_int 4)))
           (match_operand:SI 0 "register_operand" ""))
      (set (mem:SI (reg:SI SP_REG))
           (match_operand:SI 1 "register_operand" ""))])]
  "TARGET_H8300S
   && ((REGNO (operands[0]) == 0 && REGNO (operands[1]) == 1)
       || (REGNO (operands[0]) == 2 && REGNO (operands[1]) == 3)
       || (REGNO (operands[0]) == 4 && REGNO (operands[1]) == 5))"
  "ldm.l\\t@er7+,%S0-%S1"
  [(set_attr "cc" "none")
   (set_attr "length" "4")])

(define_insn "ldm_h8300s_3"
  [(parallel
     [(set (reg:SI SP_REG)
           (plus:SI (reg:SI SP_REG) (const_int 12)))
      (set (mem:SI (plus:SI (reg:SI SP_REG) (const_int 8)))
           (match_operand:SI 0 "register_operand" ""))
      (set (mem:SI (plus:SI (reg:SI SP_REG) (const_int 4)))
           (match_operand:SI 1 "register_operand" ""))
      (set (mem:SI (reg:SI SP_REG))
           (match_operand:SI 2 "register_operand" ""))])]
  "TARGET_H8300S
   && ((REGNO (operands[0]) == 0
        && REGNO (operands[1]) == 1
        && REGNO (operands[2]) == 2)
       || (REGNO (operands[0]) == 4
           && REGNO (operands[1]) == 5
           && REGNO (operands[2]) == 6))"
  "ldm.l\\t@er7+,%S0-%S2"
  [(set_attr "cc" "none")
   (set_attr "length" "4")])

(define_insn "ldm_h8300s_4"
  [(parallel
     [(set (reg:SI SP_REG)
           (plus:SI (reg:SI SP_REG) (const_int 16)))
      (set (mem:SI (plus:SI (reg:SI SP_REG) (const_int 12)))
           (match_operand:SI 0 "register_operand" ""))
      (set (mem:SI (plus:SI (reg:SI SP_REG) (const_int 8)))
           (match_operand:SI 1 "register_operand" ""))
      (set (mem:SI (plus:SI (reg:SI SP_REG) (const_int 4)))
           (match_operand:SI 2 "register_operand" ""))
      (set (mem:SI (reg:SI SP_REG))
           (match_operand:SI 3 "register_operand" ""))])]
  "TARGET_H8300S
   && REGNO (operands[0]) == 0
   && REGNO (operands[1]) == 1
   && REGNO (operands[2]) == 2
   && REGNO (operands[3]) == 3"
  "ldm.l\\t@er7+,%S0-%S3"
  [(set_attr "cc" "none")
   (set_attr "length" "4")])

(define_expand "return"
  [(return)]
  "h8300_can_use_return_insn_p ()"
  "")

(define_insn "*return_1"
  [(return)]
  "reload_completed"
  "*
{
  if (h8300_current_function_interrupt_function_p ())
    return \"rte\";
  else
    return \"rts\";
}"
  [(set_attr "cc" "none")
   (set_attr "length" "2")])

(define_expand "prologue"
  [(const_int 0)]
  ""
  "h8300_expand_prologue (); DONE;")

(define_expand "epilogue"
  [(return)]
  ""
  "h8300_expand_epilogue ();")

(define_insn "monitor_prologue"
  [(unspec_volatile [(const_int 0)] UNSPEC_MONITOR)]
  ""
  "*
{
  if (TARGET_H8300)
    return \"subs\\t#2,r7\;mov.w\\tr0,@-r7\;stc\\tccr,r0l\;mov.b\tr0l,@(2,r7)\;mov.w\\t@r7+,r0\;orc\t#128,ccr\";
  else if (TARGET_H8300H)
    return \"mov.l\\ter0,@-er7\;stc\\tccr,r0l\;mov.b\\tr0l,@(4,er7)\;mov.l\\t@er7+,er0\;orc\\t#128,ccr\";
  else if (TARGET_H8300S)
    return \"stc\texr,@-er7\;mov.l\\ter0,@-er7\;stc\tccr,r0l\;mov.b\tr0l,@(6,er7)\;mov.l\\t@er7+,er0\;orc\t#128,ccr\";
    abort ();
}"
  [(set_attr "length" "20")
   (set_attr "cc" "clobber")])
\f
;; ----------------------------------------------------------------------
;; EXTEND INSTRUCTIONS
;; ----------------------------------------------------------------------

(define_expand "zero_extendqihi2"
  [(set (match_operand:HI 0 "register_operand" "")
        (zero_extend:HI (match_operand:QI 1 "general_operand_src" "")))]
  ""
  "")

(define_insn "*zero_extendqihi2_h8300"
  [(set (match_operand:HI 0 "register_operand" "=r,r")
        (zero_extend:HI (match_operand:QI 1 "general_operand_src" "0,g>")))]
  "TARGET_H8300"
  "@
  mov.b #0,%t0
  #"
  [(set_attr "length" "2,10")
   (set_attr "cc" "clobber,clobber")])

(define_insn "*zero_extendqihi2_h8300hs"
  [(set (match_operand:HI 0 "register_operand" "=r,r")
        (zero_extend:HI (match_operand:QI 1 "general_operand_src" "0,g>")))]
  "TARGET_H8300H || TARGET_H8300S"
  "@
  extu.w        %T0
  #"
  [(set_attr "length" "2,10")
   (set_attr "cc" "set_znv,set_znv")])

;; Split the zero extension of a general operand (actually a memory
;; operand) into a load of the operand and the actual zero extension
;; so that 1) the length will be accurate, and 2) the zero extensions
;; appearing at the end of basic blocks may be merged.

(define_split
  [(set (match_operand:HI 0 "register_operand" "")
        (zero_extend:HI (match_operand:QI 1 "general_operand_src" "")))]
  "reload_completed"
  [(set (match_dup 2)
        (match_dup 1))
   (set (match_dup 0)
        (zero_extend:HI (match_dup 2)))]
  "operands[2] = gen_rtx_REG (QImode, REGNO (operands[0]));")

(define_expand "zero_extendqisi2"
  [(set (match_operand:SI 0 "register_operand" "")
        (zero_extend:SI (match_operand:QI 1 "general_operand_src" "")))]
  ""
  "")

(define_insn "*zero_extendqisi2_h8300"
  [(set (match_operand:SI 0 "register_operand" "=r,r")
        (zero_extend:SI (match_operand:QI 1 "general_operand_src" "0,g>")))]
  "TARGET_H8300"
  "@
  mov.b #0,%x0\;sub.w   %e0,%e0
  mov.b %R1,%w0\;mov.b  #0,%x0\;sub.w   %e0,%e0"
  [(set_attr "length" "4,8")
   (set_attr "cc" "clobber,clobber")])

(define_insn "*zero_extendqisi2_h8300hs"
  [(set (match_operand:SI 0 "register_operand" "=r,r")
        (zero_extend:SI (match_operand:QI 1 "general_operand_src" "0,g>")))]
  "TARGET_H8300H || TARGET_H8300S"
  "@
  extu.w        %T0\;extu.l     %S0
  mov.b %R1,%w0\;extu.w %T0\;extu.l     %S0"
  [(set_attr "length" "4,12")
   (set_attr "cc" "set_znv,set_znv")])

(define_split
  [(set (match_operand:SI 0 "register_operand" "")
        (zero_extend:SI (match_operand:QI 1 "general_operand_src" "")))]
  "(TARGET_H8300H || TARGET_H8300S)
   && reg_overlap_mentioned_p (operands[0], operands[1])
   && reload_completed" 
  [(set (match_dup 2)
        (match_dup 1))
   (set (match_dup 0)
        (zero_extend:SI (match_dup 2)))]
  "operands[2] = gen_rtx_REG (QImode, REGNO (operands[0]));")

(define_split
  [(set (match_operand:SI 0 "register_operand" "")
        (zero_extend:SI (match_operand:QI 1 "general_operand_src" "")))]
  "(TARGET_H8300H || TARGET_H8300S)
   && !reg_overlap_mentioned_p (operands[0], operands[1])
   && reload_completed" 
  [(set (match_dup 0)
        (const_int 0))
   (set (strict_low_part (match_dup 2))
        (match_dup 1))]
  "operands[2] = gen_rtx_REG (QImode, REGNO (operands[0]));")

(define_expand "zero_extendhisi2"
  [(set (match_operand:SI 0 "register_operand" "")
        (zero_extend:SI (match_operand:HI 1 "register_operand" "")))]
  ""
  "")

;; %e prints the high part of a CONST_INT, not the low part.  Arggh.
(define_insn "*zero_extendhisi2_h8300"
  [(set (match_operand:SI 0 "register_operand" "=r,r,r")
        (zero_extend:SI (match_operand:HI 1 "general_operand_src" "0,i,g>")))]
  "TARGET_H8300"
  "@
  sub.w %e0,%e0
  mov.w %f1,%f0\;sub.w  %e0,%e0
  mov.w %e1,%f0\;sub.w  %e0,%e0"
  [(set_attr "length" "2,4,6")
   (set_attr "cc" "clobber,clobber,clobber")])

(define_insn ""
  [(set (match_operand:SI 0 "register_operand" "=r")
        (zero_extend:SI (match_operand:HI 1 "register_operand" "0")))]
  "TARGET_H8300H || TARGET_H8300S"
  "extu.l       %S0"
  [(set_attr "length" "2")
   (set_attr "cc" "set_znv")])

(define_expand "extendqihi2"
  [(set (match_operand:HI 0 "register_operand" "")
        (sign_extend:HI (match_operand:QI 1 "register_operand" "")))]
  ""
  "")

(define_insn ""
  [(set (match_operand:HI 0 "register_operand" "=r,r")
        (sign_extend:HI (match_operand:QI 1 "general_operand_src" "0,g>")))]
  "TARGET_H8300"
  "@
  bld   #7,%s0\;subx    %t0,%t0
  mov.b %R1,%s0\;bld    #7,%s0\;subx    %t0,%t0"
  [(set_attr "length" "4,8")
   (set_attr "cc" "clobber,clobber")])

(define_insn ""
  [(set (match_operand:HI 0 "register_operand" "=r")
        (sign_extend:HI (match_operand:QI 1 "register_operand" "0")))]
  "TARGET_H8300H || TARGET_H8300S"
  "exts.w       %T0"
  [(set_attr "length" "2")
   (set_attr "cc" "set_znv")])

(define_expand "extendqisi2"
  [(set (match_operand:SI 0 "register_operand" "=r,r")
        (sign_extend:SI (match_operand:QI 1 "register_operand" "")))]
  ""
  "")

(define_insn "*extendqisi2_h8300"
  [(set (match_operand:SI 0 "register_operand" "")
        (sign_extend:SI (match_operand:QI 1 "general_operand_src" "0,g>")))]
  "TARGET_H8300"
  "@
  bld   #7,%w0\;subx    %x0,%x0\;subx   %y0,%y0\;subx   %z0,%z0
  mov.b %R1,%w0\;bld    #7,%w0\;subx    %x0,%x0\;subx   %y0,%y0\;subx   %z0,%z0"
  [(set_attr "length" "8,12")
   (set_attr "cc" "clobber,clobber")])

;; The following pattern is needed because without the pattern, the
;; combiner would split (sign_extend:SI (reg:QI)) into into two 24-bit
;; shifts, one ashift and one ashiftrt.

(define_insn_and_split "*extendqisi2_h8300hs"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (sign_extend:SI (match_operand:QI 1 "register_operand" "0")))]
  "(TARGET_H8300H || TARGET_H8300S)"
  "#"
  "&& reload_completed"
  [(set (match_dup 2)
        (sign_extend:HI (match_dup 1)))
   (set (match_dup 0)
        (sign_extend:SI (match_dup 2)))]
  "operands[2] = gen_rtx_REG (HImode, REGNO (operands[0]));")

(define_expand "extendhisi2"
  [(set (match_operand:SI 0 "register_operand" "")
        (sign_extend:SI (match_operand:HI 1 "register_operand" "")))]
  ""
  "")

(define_insn "*extendhisi2_h8300"
  [(set (match_operand:SI 0 "register_operand" "=r,r")
        (sign_extend:SI (match_operand:HI 1 "general_operand_src" "0,g>")))]
  "TARGET_H8300"
  "@
  bld   #7,%x0\;subx    %y0,%y0\;subx   %z0,%z0
  mov.w %T1,%f0\;bld    #7,%x0\;subx    %y0,%y0\;subx   %z0,%z0"
  [(set_attr "length" "6,10")
   (set_attr "cc" "clobber,clobber")])

(define_insn ""
  [(set (match_operand:SI 0 "register_operand" "=r")
        (sign_extend:SI (match_operand:HI 1 "register_operand" "0")))]
  "TARGET_H8300H || TARGET_H8300S"
  "exts.l       %S0"
  [(set_attr "length" "2")
   (set_attr "cc" "set_znv")])
\f
;; ----------------------------------------------------------------------
;; SHIFTS
;; ----------------------------------------------------------------------
;;
;; We make some attempt to provide real efficient shifting.  One example is
;; doing an 8 bit shift of a 16 bit value by moving a byte reg into the other
;; reg and moving 0 into the former reg.
;;
;; We also try to achieve this in a uniform way.  IE: We don't try to achieve
;; this in both rtl and at insn emit time.  Ideally, we'd use rtl as that would
;; give the optimizer more cracks at the code.  However, we wish to do things
;; like optimizing shifting the sign bit to bit 0 by rotating the other way.
;; There is rtl to handle this (rotate + and), but the H8/300 doesn't handle
;; 16 bit rotates.  Also, if we emit complicated rtl, combine may not be able
;; to detect cases it can optimize.
;;
;; For these and other fuzzy reasons, I've decided to go the less pretty but
;; easier "do it at insn emit time" route.

;; QI BIT SHIFTS

(define_expand "ashlqi3"
  [(set (match_operand:QI 0 "register_operand" "")
        (ashift:QI (match_operand:QI 1 "register_operand" "")
                   (match_operand:QI 2 "nonmemory_operand" "")))]
  ""
  "expand_a_shift (QImode, ASHIFT, operands); DONE;")

(define_expand "ashrqi3"
  [(set (match_operand:QI 0 "register_operand" "")
        (ashiftrt:QI (match_operand:QI 1 "register_operand" "")
                     (match_operand:QI 2 "nonmemory_operand" "")))]
  ""
  "expand_a_shift (QImode, ASHIFTRT, operands); DONE;")

(define_expand "lshrqi3"
  [(set (match_operand:QI 0 "register_operand" "")
        (lshiftrt:QI (match_operand:QI 1 "register_operand" "")
                     (match_operand:QI 2 "nonmemory_operand" "")))]
  ""
  "expand_a_shift (QImode, LSHIFTRT, operands); DONE;")

(define_insn ""
  [(set (match_operand:QI 0 "register_operand" "=r,r")
        (match_operator:QI 3 "nshift_operator"
                        [ (match_operand:QI 1 "register_operand" "0,0")
                          (match_operand:QI 2 "nonmemory_operand" "R,rn")]))
   (clobber (match_scratch:QI 4 "=X,&r"))]
  ""
  "* return output_a_shift (operands);"
  [(set (attr "length")
        (symbol_ref "compute_a_shift_length (insn, operands)"))
   (set_attr "cc" "clobber")])

;; HI BIT SHIFTS

(define_expand "ashlhi3"
  [(set (match_operand:HI 0 "register_operand" "")
        (ashift:HI (match_operand:HI 1 "nonmemory_operand" "")
                   (match_operand:QI 2 "nonmemory_operand" "")))]
  ""
  "expand_a_shift (HImode, ASHIFT, operands); DONE;")

(define_expand "lshrhi3"
  [(set (match_operand:HI 0 "register_operand" "")
        (lshiftrt:HI (match_operand:HI 1 "general_operand" "")
                     (match_operand:QI 2 "nonmemory_operand" "")))]
  ""
  "expand_a_shift (HImode, LSHIFTRT, operands); DONE;")

(define_expand "ashrhi3"
  [(set (match_operand:HI 0 "register_operand" "")
        (ashiftrt:HI (match_operand:HI 1 "register_operand" "")
                     (match_operand:QI 2 "nonmemory_operand" "")))]
  ""
  "expand_a_shift (HImode, ASHIFTRT, operands); DONE;")

(define_insn ""
  [(set (match_operand:HI 0 "register_operand" "=r,r")
        (match_operator:HI 3 "nshift_operator"
                        [ (match_operand:HI 1 "register_operand" "0,0")
                          (match_operand:QI 2 "nonmemory_operand" "S,rn")]))
   (clobber (match_scratch:QI 4 "=X,&r"))]
  ""
  "* return output_a_shift (operands);"
  [(set (attr "length")
        (symbol_ref "compute_a_shift_length (insn, operands)"))
   (set_attr "cc" "clobber")])

;;  SI BIT SHIFTS

(define_expand "ashlsi3"
  [(set (match_operand:SI 0 "register_operand" "")
        (ashift:SI (match_operand:SI 1 "general_operand" "")
                   (match_operand:QI 2 "nonmemory_operand" "")))]
  ""
  "expand_a_shift (SImode, ASHIFT, operands); DONE;")

(define_expand "lshrsi3"
  [(set (match_operand:SI 0 "register_operand" "")
        (lshiftrt:SI (match_operand:SI 1 "general_operand" "")
                     (match_operand:QI 2 "nonmemory_operand" "")))]
  ""
  "expand_a_shift (SImode, LSHIFTRT, operands); DONE;")

(define_expand "ashrsi3"
  [(set (match_operand:SI 0 "register_operand" "")
        (ashiftrt:SI (match_operand:SI 1 "general_operand" "")
                     (match_operand:QI 2 "nonmemory_operand" "")))]
  ""
  "expand_a_shift (SImode, ASHIFTRT, operands); DONE;")

(define_insn ""
  [(set (match_operand:SI 0 "register_operand" "=r,r")
        (match_operator:SI 3 "nshift_operator"
                        [ (match_operand:SI 1 "register_operand" "0,0")
                          (match_operand:QI 2 "nonmemory_operand" "T,rn")]))
   (clobber (match_scratch:QI 4 "=X,&r"))]
  ""
  "* return output_a_shift (operands);"
  [(set (attr "length")
        (symbol_ref "compute_a_shift_length (insn, operands)"))
   (set_attr "cc" "clobber")])

;; Split a variable shift into a loop.  If the register containing
;; the shift count dies, then we just use that register.

(define_split
  [(parallel
     [(set (match_operand 0 "register_operand" "")
           (match_operator 2 "nshift_operator"
             [(match_dup 0)
              (match_operand:QI 1 "register_operand" "")]))
      (clobber (match_operand:QI 3 "register_operand" ""))])]
  "flow2_completed
   && find_regno_note (insn, REG_DEAD, REGNO (operands[1]))"
  [(set (cc0)
        (match_dup 1))
   (set (pc)
        (if_then_else (le (cc0) (const_int 0))
                      (label_ref (match_dup 5))
                      (pc)))
   (match_dup 4)
   (parallel
     [(set (match_dup 0)
           (match_op_dup 2 [(match_dup 0) (const_int 1)]))
      (clobber (scratch:QI))])
   (set (match_dup 1)
        (plus:QI (match_dup 1) (const_int -1)))
   (set (cc0)
        (match_dup 1))
   (set (pc)
        (if_then_else (ne (cc0) (const_int 0))
                      (label_ref (match_dup 4))
                      (pc)))
   (match_dup 5)]
  "operands[4] = gen_label_rtx ();
   operands[5] = gen_label_rtx ();")

(define_split
  [(parallel
     [(set (match_operand 0 "register_operand" "")
           (match_operator 2 "nshift_operator"
             [(match_dup 0)
              (match_operand:QI 1 "register_operand" "")]))
      (clobber (match_operand:QI 3 "register_operand" ""))])]
  "flow2_completed
   && !find_regno_note (insn, REG_DEAD, REGNO (operands[1]))"
  [(set (match_dup 3)
        (match_dup 1))
   (set (cc0)
        (match_dup 3))
   (set (pc)
        (if_then_else (le (cc0) (const_int 0))
                      (label_ref (match_dup 5))
                      (pc)))
   (match_dup 4)
   (parallel
     [(set (match_dup 0)
           (match_op_dup 2 [(match_dup 0) (const_int 1)]))
      (clobber (scratch:QI))])
   (set (match_dup 3)
        (plus:QI (match_dup 3) (const_int -1)))
   (set (cc0)
        (match_dup 3))
   (set (pc)
        (if_then_else (ne (cc0) (const_int 0))
                      (label_ref (match_dup 4))
                      (pc)))
   (match_dup 5)]
  "operands[4] = gen_label_rtx ();
   operands[5] = gen_label_rtx ();")
\f
;; ----------------------------------------------------------------------
;; ROTATIONS
;; ----------------------------------------------------------------------

(define_expand "rotlqi3"
  [(set (match_operand:QI 0 "register_operand" "")
        (rotate:QI (match_operand:QI 1 "register_operand" "")
                   (match_operand:QI 2 "nonmemory_operand" "")))]
  ""
  "if (expand_a_rotate (ROTATE, operands)) DONE; else FAIL;")

(define_insn "*rotlqi3_1"
  [(set (match_operand:QI 0 "register_operand" "=r")
        (rotate:QI (match_operand:QI 1 "register_operand" "0")
                   (match_operand:QI 2 "immediate_operand" "")))]
  ""
  "* return emit_a_rotate (ROTATE, operands);"
  [(set_attr "length" "20")
   (set_attr "cc" "clobber")])

(define_expand "rotlhi3"
  [(set (match_operand:HI 0 "register_operand" "")
        (rotate:HI (match_operand:HI 1 "register_operand" "")
                   (match_operand:QI 2 "nonmemory_operand" "")))]
  ""
  "if (expand_a_rotate (ROTATE, operands)) DONE; else FAIL;")

(define_insn "*rotlhi3_1"
  [(set (match_operand:HI 0 "register_operand" "=r")
        (rotate:HI (match_operand:HI 1 "register_operand" "0")
                   (match_operand:QI 2 "immediate_operand" "")))]
  ""
  "* return emit_a_rotate (ROTATE, operands);"
  [(set_attr "length" "20")
   (set_attr "cc" "clobber")])

(define_expand "rotlsi3"
  [(set (match_operand:SI 0 "register_operand" "")
        (rotate:SI (match_operand:SI 1 "register_operand" "")
                   (match_operand:QI 2 "nonmemory_operand" "")))]
  "TARGET_H8300H || TARGET_H8300S"
  "if (expand_a_rotate (ROTATE, operands)) DONE; else FAIL;")

(define_insn "*rotlsi3_1"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (rotate:SI (match_operand:SI 1 "register_operand" "0")
                   (match_operand:QI 2 "immediate_operand" "")))]
  "TARGET_H8300H || TARGET_H8300S"
  "* return emit_a_rotate (ROTATE, operands);"
  [(set_attr "length" "20")
   (set_attr "cc" "clobber")])
\f
;; -----------------------------------------------------------------
;; BIT FIELDS
;; -----------------------------------------------------------------
;; The H8/300 has given 1/8th of its opcode space to bitfield
;; instructions so let's use them as well as we can.

;; You'll never believe all these patterns perform one basic action --
;; load a bit from the source, optionally invert the bit, then store it
;; in the destination (which is known to be zero).
;;
;; Combine obviously need some work to better identify this situation and
;; canonicalize the form better.

;;
;; Normal loads with a 16bit destination.
;;

(define_insn ""
  [(set (match_operand:HI 0 "register_operand" "=&r")
        (zero_extract:HI (match_operand:HI 1 "register_operand" "r")
                         (const_int 1)
                         (match_operand:HI 2 "immediate_operand" "n")))]
  "TARGET_H8300"
  "sub.w        %0,%0\;bld      %Z2,%Y1\;bst    #0,%X0"
  [(set_attr "cc" "clobber")
   (set_attr "length" "6")])

;;
;; Inverted loads with a 16bit destination.
;;

(define_insn ""
  [(set (match_operand:HI 0 "register_operand" "=&r")
        (zero_extract:HI (xor:HI (match_operand:HI 1 "register_operand" "r")
                                 (match_operand:HI 3 "const_int_operand" "n"))
                         (const_int 1)
                         (match_operand:HI 2 "const_int_operand" "n")))]
  "TARGET_H8300
   && (1 << INTVAL (operands[2])) == INTVAL (operands[3])"
  "sub.w        %0,%0\;bild     %Z2,%Y1\;bst    #0,%X0"
  [(set_attr "cc" "clobber")
   (set_attr "length" "8")])

;;
;; Normal loads with a 32bit destination.
;;

(define_insn "*extzv_1_r_h8300"
  [(set (match_operand:SI 0 "register_operand" "=&r")
        (zero_extract:SI (match_operand:HI 1 "register_operand" "r")
                         (const_int 1)
                         (match_operand 2 "const_int_operand" "n")))]
  "TARGET_H8300
   && INTVAL (operands[2]) < 16"
  "* return output_simode_bld (0, operands);"
  [(set_attr "cc" "clobber")
   (set_attr "length" "8")])

(define_insn "*extzv_1_r_h8300hs"
  [(set (match_operand:SI 0 "register_operand" "=r,r")
        (zero_extract:SI (match_operand:SI 1 "register_operand" "?0,r")
                         (const_int 1)
                         (match_operand 2 "const_int_operand" "n,n")))]
  "(TARGET_H8300H || TARGET_H8300S)
   && INTVAL (operands[2]) < 16"
  "* return output_simode_bld (0, operands);"
  [(set_attr "cc" "clobber,clobber")
   (set_attr "length" "8,6")])

;;
;; Inverted loads with a 32bit destination.
;;

(define_insn "*extzv_1_r_inv_h8300"
  [(set (match_operand:SI 0 "register_operand" "=&r")
        (zero_extract:SI (xor:HI (match_operand:HI 1 "register_operand" "r")
                                 (match_operand:HI 3 "const_int_operand" "n"))
                         (const_int 1)
                         (match_operand 2 "const_int_operand" "n")))]
  "TARGET_H8300
   && INTVAL (operands[2]) < 16
   && (1 << INTVAL (operands[2])) == INTVAL (operands[3])"
  "* return output_simode_bld (1, operands);"
  [(set_attr "cc" "clobber")
   (set_attr "length" "8")])

(define_insn "*extzv_1_r_inv_h8300hs"
  [(set (match_operand:SI 0 "register_operand" "=r,r")
        (zero_extract:SI (xor:SI (match_operand:SI 1 "register_operand" "?0,r")
                                 (match_operand 3 "const_int_operand" "n,n"))
                         (const_int 1)
                         (match_operand 2 "const_int_operand" "n,n")))]
  "(TARGET_H8300H || TARGET_H8300S)
   && INTVAL (operands[2]) < 16
   && (1 << INTVAL (operands[2])) == INTVAL (operands[3])"
  "* return output_simode_bld (1, operands);"
  [(set_attr "cc" "clobber,clobber")
   (set_attr "length" "8,6")])

(define_expand "insv"
  [(set (zero_extract:HI (match_operand:HI 0 "general_operand" "")
                         (match_operand:HI 1 "general_operand" "")
                         (match_operand:HI 2 "general_operand" ""))
        (match_operand:HI 3 "general_operand" ""))]
  "TARGET_H8300"
  "
{
  /* We only have single bit bit-field instructions.  */
  if (INTVAL (operands[1]) != 1)
    FAIL;

  /* For now, we don't allow memory operands.  */
  if (GET_CODE (operands[0]) == MEM
      || GET_CODE (operands[3]) == MEM)
    FAIL;
}")

(define_insn ""
  [(set (zero_extract:HI (match_operand:HI 0 "register_operand" "+r")
                         (const_int 1)
                         (match_operand:HI 1 "immediate_operand" "n"))
        (match_operand:HI 2 "register_operand" "r"))]
  ""
  "bld  #0,%R2\;bst     %Z1,%Y0 ; i1"
  [(set_attr "cc" "clobber")
   (set_attr "length" "4")])

(define_expand "extzv"
  [(set (match_operand:HI 0 "register_operand" "")
        (zero_extract:HI (match_operand:HI 1 "bit_operand" "")
                         (match_operand:HI 2 "general_operand" "")
                         (match_operand:HI 3 "general_operand" "")))]
  "TARGET_H8300"
  "
{
  /* We only have single bit bit-field instructions.  */
  if (INTVAL (operands[2]) != 1)
    FAIL;

  /* For now, we don't allow memory operands.  */
  if (GET_CODE (operands[1]) == MEM)
    FAIL;
}")

;; BAND, BOR, and BXOR patterns

(define_insn ""
  [(set (match_operand:HI 0 "bit_operand" "=Ur")
        (match_operator:HI 4 "bit_operator"
           [(zero_extract:HI (match_operand:HI 1 "register_operand" "r")
                             (const_int 1)
                             (match_operand:HI 2 "immediate_operand" "n"))
            (match_operand:HI 3 "bit_operand" "0")]))]
  ""
  "bld  %Z2,%Y1\;%b4    #0,%R0\;bst     #0,%R0; bl1"
  [(set_attr "cc" "clobber")
   (set_attr "length" "6")
   (set_attr "adjust_length" "no")])

(define_insn ""
  [(set (match_operand:HI 0 "bit_operand" "=Ur")
        (match_operator:HI 5 "bit_operator"
           [(zero_extract:HI (match_operand:HI 1 "register_operand" "r")
                             (const_int 1)
                             (match_operand:HI 2 "immediate_operand" "n"))
            (zero_extract:HI (match_operand:HI 3 "register_operand" "r")
                             (const_int 1)
                             (match_operand:HI 4 "immediate_operand" "n"))]))]
  ""
  "bld  %Z2,%Y1\;%b5    %Z4,%Y3\;bst    #0,%R0; bl3"
  [(set_attr "cc" "clobber")
   (set_attr "length" "6")
   (set_attr "adjust_length" "no")])
\f
;; -----------------------------------------------------------------
;; COMBINE PATTERNS
;; -----------------------------------------------------------------

;; extzv:SI

(define_insn "*extzv_8_8"
  [(set (match_operand:SI 0 "register_operand" "=r,r")
        (zero_extract:SI (match_operand:SI 1 "register_operand" "?0,r")
                         (const_int 8)
                         (const_int 8)))]
  "TARGET_H8300H || TARGET_H8300S"
  "@
   mov.b\\t%x1,%w0\;extu.w\\t%f0\;extu.l\\t%S0
   sub.l\\t%S0,%S0\;mov.b\\t%x1,%w0"
  [(set_attr "cc" "set_znv,clobber")
   (set_attr "length" "6,4")])

(define_insn "*extzv_8_16"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (zero_extract:SI (match_operand:SI 1 "register_operand" "r")
                         (const_int 8)
                         (const_int 16)))]
  "TARGET_H8300H || TARGET_H8300S"
  "mov.w\\t%e1,%f0\;extu.w\\t%f0\;extu.l\\t%S0"
  [(set_attr "cc" "set_znv")
   (set_attr "length" "6")])

(define_insn "*extzv_16_8"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (zero_extract:SI (match_operand:SI 1 "register_operand" "r")
                         (const_int 16)
                         (const_int 8)))
   (clobber (match_scratch:SI 2 "=&r"))]
  "TARGET_H8300H"
  "mov.w\\t%e1,%f2\;mov.b\\t%x1,%w0\;mov.b\\t%w2,%x0\;extu.l\\t%S0"
  [(set_attr "length" "8")
   (set_attr "cc" "set_znv")])

;; Extract the exponent of a float.

(define_insn_and_split "*extzv_8_23"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (zero_extract:SI (match_operand:SI 1 "register_operand" "0")
                         (const_int 8)
                         (const_int 23)))]
  "(TARGET_H8300H || TARGET_H8300S)"
  "#"
  "&& reload_completed"
  [(parallel [(set (match_dup 0)
                   (ashift:SI (match_dup 0)
                              (const_int 1)))
              (clobber (scratch:QI))])
   (parallel [(set (match_dup 0)
                   (lshiftrt:SI (match_dup 0)
                                (const_int 24)))
              (clobber (scratch:QI))])]
  "")

;; and:SI

;; ((SImode) HImode) << 15

(define_insn_and_split "*twoshifts_l16_r1"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (and:SI (ashift:SI (match_operand:SI 1 "register_operand" "0")
                           (const_int 15))
                (const_int 2147450880)))]
  "(TARGET_H8300H || TARGET_H8300S)"
  "#"
  "&& reload_completed"
  [(parallel [(set (match_dup 0)
                   (ashift:SI (match_dup 0)
                              (const_int 16)))
              (clobber (scratch:QI))])
   (parallel [(set (match_dup 0)
                   (lshiftrt:SI (match_dup 0)
                                (const_int 1)))
              (clobber (scratch:QI))])]
  "")

;; Transform (SImode << B) & 0xffff into (SImode) (HImode << B).

(define_insn_and_split "*andsi3_ashift_n_lower"
  [(set (match_operand:SI 0 "register_operand" "=r,r")
        (and:SI (ashift:SI (match_operand:SI 1 "register_operand" "0,0")
                           (match_operand:QI 2 "const_int_operand" "S,n"))
                (match_operand:SI 3 "const_int_operand" "n,n")))
   (clobber (match_scratch:QI 4 "=X,&r"))]
  "(TARGET_H8300H || TARGET_H8300S)
   && INTVAL (operands[2]) <= 15
   && INTVAL (operands[3]) == ((-1 << INTVAL (operands[2])) & 0xffff)"
  "#"
  "&& reload_completed"
  [(parallel [(set (match_dup 5)
                   (ashift:HI (match_dup 5)
                              (match_dup 2)))
              (clobber (match_dup 4))])
   (set (match_dup 0)
        (zero_extend:SI (match_dup 5)))]
  "operands[5] = gen_rtx_REG (HImode, REGNO (operands[0]));")

;; Accept (A >> 30) & 2 and the like.

(define_insn "*andsi3_lshiftrt_n_sb"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (and:SI (lshiftrt:SI (match_operand:SI 1 "register_operand" "0")
                             (match_operand:SI 2 "const_int_operand" "n"))
                (match_operand:SI 3 "single_one_operand" "n")))]
  "(TARGET_H8300H || TARGET_H8300S)
   && exact_log2 (INTVAL (operands[3])) < 16
   && INTVAL (operands[2]) + exact_log2 (INTVAL (operands[3])) == 31"
  "*
{
  operands[3] = GEN_INT (exact_log2 (INTVAL (operands[3])));
  return \"shll.l\\t%S0\;xor.l\\t%S0,%S0\;bst\\t%Z3,%Y0\";
}"
  [(set_attr "length" "8")
   (set_attr "cc" "clobber")])

(define_insn_and_split "*andsi3_lshiftrt_9_sb"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (and:SI (lshiftrt:SI (match_operand:SI 1 "register_operand" "0")
                             (const_int 9))
                (const_int 4194304)))]
  "(TARGET_H8300H || TARGET_H8300S)"
  "#"
  "&& reload_completed"
  [(set (match_dup 0)
        (and:SI (lshiftrt:SI (match_dup 0)
                             (const_int 25))
                (const_int 64)))
   (parallel [(set (match_dup 0)
                   (ashift:SI (match_dup 0)
                              (const_int 16)))
              (clobber (scratch:QI))])]
  "")

;; plus:SI

(define_insn "*addsi3_upper"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (plus:SI (mult:SI (match_operand:SI 1 "register_operand" "r")
                          (const_int 65536))
                 (match_operand:SI 2 "register_operand" "0")))]
  "TARGET_H8300H || TARGET_H8300S"
  "add.w\\t%f1,%e0"
  [(set_attr "length" "2")
   (set_attr "cc" "clobber")])

(define_insn "*addsi3_lshiftrt_16_zexthi"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (plus:SI (lshiftrt:SI (match_operand:SI 1 "register_operand" "r")
                              (const_int 16))
                 (zero_extend:SI (match_operand:HI 2 "register_operand" "0"))))]
  "TARGET_H8300H || TARGET_H8300S"
  "add.w\\t%e1,%f0\;xor.w\\t%e0,%e0\;rotxl.w\\t%e0,%e0"
  [(set_attr "cc" "clobber")
   (set_attr "length" "6")])

;; [ix]or:HI

(define_insn "*ixorhi3_zext"
  [(set (match_operand:HI 0 "register_operand" "=r")
        (match_operator:HI 1 "iorxor_operator"
          [(zero_extend:HI (match_operand:QI 2 "register_operand" "r"))
           (match_operand:HI 3 "register_operand" "0")]))]
  ""
  "%c1.b\\t%X2,%s0"
  [(set_attr "cc" "clobber")
   (set_attr "length" "2")])

;; [ix]or:SI

(define_insn "*ixorsi3_zext_qi"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (match_operator:SI 1 "iorxor_operator"
          [(zero_extend:SI (match_operand:QI 2 "register_operand" "r"))
           (match_operand:SI 3 "register_operand" "0")]))]
  ""
  "%c1.b\\t%X2,%w0"
  [(set_attr "cc" "clobber")
   (set_attr "length" "2")])

(define_insn "*ixorsi3_zext_hi"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (match_operator:SI 1 "iorxor_operator"
          [(zero_extend:SI (match_operand:HI 2 "register_operand" "r"))
           (match_operand:SI 3 "register_operand" "0")]))]
  "TARGET_H8300H || TARGET_H8300S"
  "%c1.w\\t%T2,%f0"
  [(set_attr "cc" "clobber")
   (set_attr "length" "2")])

(define_insn "*ixorsi3_ashift_16"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (match_operator:SI 1 "iorxor_operator"
          [(ashift:SI (match_operand:SI 2 "register_operand" "r")
                      (const_int 16))
           (match_operand:SI 3 "register_operand" "0")]))]
  "TARGET_H8300H || TARGET_H8300S"
  "%c1.w\\t%f2,%e0"
  [(set_attr "cc" "clobber")
   (set_attr "length" "2")])

(define_insn "*ixorsi3_lshiftrt_16"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (match_operator:SI 1 "iorxor_operator"
          [(lshiftrt:SI (match_operand:SI 2 "register_operand" "r")
                        (const_int 16))
           (match_operand:SI 3 "register_operand" "0")]))]
  "TARGET_H8300H || TARGET_H8300S"
  "%c1.w\\t%e2,%f0"
  [(set_attr "cc" "clobber")
   (set_attr "length" "2")])

(define_insn_and_split "*addsi3_and_r_1"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (plus:SI (and:SI (match_operand:SI 1 "register_operand" "r")
                         (const_int 1))
                 (match_operand:SI 2 "register_operand" "0")))]
  "(TARGET_H8300H || TARGET_H8300S)"
  "#"
  "&& reload_completed"
  [(set (cc0)
        (zero_extract:SI (match_dup 1)
                         (const_int 1)
                         (const_int 0)))
   (set (pc)
        (if_then_else (eq (cc0)
                          (const_int 0))
                      (label_ref (match_dup 3))
                      (pc)))
   (set (match_dup 2)
        (plus:SI (match_dup 2)
                 (const_int 1)))
   (match_dup 3)]
  "operands[3] = gen_label_rtx ();")

(define_insn_and_split "*addsi3_and_not_r_1"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (plus:SI (and:SI (not:SI (match_operand:SI 1 "register_operand" "r"))
                         (const_int 1))
                 (match_operand:SI 2 "register_operand" "0")))]
  "(TARGET_H8300H || TARGET_H8300S)"
  "#"
  "&& reload_completed"
  [(set (cc0)
        (zero_extract:SI (match_dup 1)
                         (const_int 1)
                         (const_int 0)))
   (set (pc)
        (if_then_else (ne (cc0)
                          (const_int 0))
                      (label_ref (match_dup 3))
                      (pc)))
   (set (match_dup 2)
        (plus:SI (match_dup 2)
                 (const_int 1)))
   (match_dup 3)]
  "operands[3] = gen_label_rtx ();")

;; ior:HI

(define_insn "*iorhi3_ashift_8"
  [(set (match_operand:HI 0 "register_operand" "=r")
        (ior:HI (ashift:HI (match_operand:HI 1 "register_operand" "r")
                           (const_int 8))
                (match_operand:HI 2 "register_operand" "0")))]
  ""
  "or.b\\t%s1,%t0"
  [(set_attr "cc" "clobber")
   (set_attr "length" "2")])

(define_insn "*iorhi3_lshiftrt_8"
  [(set (match_operand:HI 0 "register_operand" "=r")
        (ior:HI (lshiftrt:HI (match_operand:HI 1 "register_operand" "r")
                             (const_int 8))
                (match_operand:HI 2 "register_operand" "0")))]
  ""
  "or.b\\t%t1,%s0"
  [(set_attr "cc" "clobber")
   (set_attr "length" "2")])

(define_insn "*iorhi3_two_qi"
  [(set (match_operand:HI 0 "register_operand" "=r")
        (ior:HI (zero_extend:HI (match_operand:QI 1 "register_operand" "0"))
                (ashift:HI (match_operand:HI 2 "register_operand" "r")
                           (const_int 8))))]
  ""
  "mov.b\\t%s2,%t0"
  [(set_attr "cc" "clobber")
   (set_attr "length" "2")])

(define_insn "*iorhi3_two_qi_mem"
  [(set (match_operand:HI 0 "register_operand" "=&r")
        (ior:HI (zero_extend:HI (match_operand:QI 1 "memory_operand" "m"))
                (ashift:HI (subreg:HI (match_operand:QI 2 "memory_operand" "m") 0)
                           (const_int 8))))]
  ""
  "mov.b\\t%X2,%t0\;mov.b\\t%X1,%s0"
  [(set_attr "cc" "clobber")
   (set_attr "length" "16")])

(define_split
  [(set (match_operand:HI 0 "register_operand" "")
        (ior:HI (zero_extend:HI (match_operand:QI 1 "memory_operand" ""))
                (ashift:HI (subreg:HI (match_operand:QI 2 "memory_operand" "") 0)
                           (const_int 8))))]
  "(TARGET_H8300H || TARGET_H8300S)
   && reload_completed
   && byte_accesses_mergeable_p (XEXP (operands[2], 0), XEXP (operands[1], 0))"
  [(set (match_dup 0)
        (match_dup 3))]
  "operands[3] = gen_rtx_MEM (HImode, XEXP (operands[2], 0));")

;; ior:SI

(define_insn "*iorsi3_two_hi"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (ior:SI (zero_extend:SI (match_operand:HI 1 "register_operand" "0"))
                (ashift:SI (match_operand:SI 2 "register_operand" "r")
                           (const_int 16))))]
  "TARGET_H8300H || TARGET_H8300S"
  "mov.w\\t%f2,%e0"
  [(set_attr "cc" "clobber")
   (set_attr "length" "2")])

(define_insn_and_split "*iorsi3_two_qi_zext"
  [(set (match_operand:SI 0 "register_operand" "=&r")
        (ior:SI (zero_extend:SI (match_operand:QI 1 "memory_operand" "m"))

                (and:SI (ashift:SI (subreg:SI (match_operand:QI 2 "memory_operand" "m") 0)
                                   (const_int 8))
                        (const_int 65280))))]
  "(TARGET_H8300H || TARGET_H8300S)"
  "#"
  "&& reload_completed"
  [(set (match_dup 3)
        (ior:HI (zero_extend:HI (match_dup 1))
                (ashift:HI (subreg:HI (match_dup 2) 0)
                           (const_int 8))))
   (set (match_dup 0)
        (zero_extend:SI (match_dup 3)))]
  "operands[3] = gen_rtx_REG (HImode, REGNO (operands[0]));")

(define_insn "*iorsi3_e2f"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (ior:SI (and:SI (match_operand:SI 1 "register_operand" "0")
                        (const_int -65536))
                (lshiftrt:SI (match_operand:SI 2 "register_operand" "r")
                             (const_int 16))))]
  "TARGET_H8300H || TARGET_H8300S"
  "mov.w\\t%e2,%f0"
  [(set_attr "length" "2")
   (set_attr "cc" "clobber")])

(define_insn_and_split "*iorsi3_two_qi_sext"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (ior:SI (zero_extend:SI (match_operand:QI 1 "register_operand" "0"))
                (ashift:SI (sign_extend:SI (match_operand:QI 2 "register_operand" "r"))
                           (const_int 8))))]
  "(TARGET_H8300H || TARGET_H8300S)"
  "#"
  "&& reload_completed"
  [(set (match_dup 3)
        (ior:HI (zero_extend:HI (match_dup 1))
                (ashift:HI (match_dup 4)
                           (const_int 8))))
   (set (match_dup 0)
        (sign_extend:SI (match_dup 3)))]
  "operands[3] = gen_rtx_REG (HImode, REGNO (operands[0]));
   operands[4] = gen_rtx_REG (HImode, REGNO (operands[2]));")

(define_insn "*iorsi3_w"
  [(set (match_operand:SI 0 "register_operand" "=r,&r")
        (ior:SI (and:SI (match_operand:SI 1 "register_operand" "0,0")
                        (const_int -256))
                (zero_extend:SI (match_operand:QI 2 "general_operand_src" "r,g>"))))]
  "TARGET_H8300H || TARGET_H8300S"
  "mov.b\\t%X2,%w0"
  [(set_attr "length" "2,8")
   (set_attr "cc" "clobber,clobber")])

(define_insn "*iorsi3_ashift_31"
  [(set (match_operand:SI 0 "register_operand" "=&r")
        (ior:SI (ashift:SI (match_operand:SI 1 "register_operand" "r")
                           (const_int 31))
                (match_operand:SI 2 "register_operand" "0")))]
  "TARGET_H8300H || TARGET_H8300S"
  "rotxl.l\\t%S0\;bor\\t#0,%w1\;rotxr.l\\t%S0"
  [(set_attr "length" "6")
   (set_attr "cc" "set_znv")])

(define_insn "*iorsi3_and_lshiftrt_n_sb"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (ior:SI (and:SI (lshiftrt:SI (match_operand:SI 1 "register_operand" "r")
                                     (const_int 30))
                        (const_int 2))
                (match_operand:SI 2 "register_operand" "0")))]
  "(TARGET_H8300H || TARGET_H8300S)"
  "rotl.l\\t%S1\;rotr.l\\t%S1\;bor\\t#1,%w0\;bst\\t#1,%w0"
  [(set_attr "length" "8")
   (set_attr "cc" "clobber")])

(define_insn "*iorsi3_and_lshiftrt_9_sb"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (ior:SI (and:SI (lshiftrt:SI (match_operand:SI 1 "register_operand" "r")
                                     (const_int 9))
                        (const_int 4194304))
                (match_operand:SI 2 "register_operand" "0")))
   (clobber (match_scratch:HI 3 "=&r"))]
  "(TARGET_H8300H || TARGET_H8300S)"
  "*
{
  if (find_regno_note (insn, REG_DEAD, REGNO (operands[1])))
    return \"shll.l\\t%S1\;xor.w\\t%T3,%T3\;bst\\t#6,%s3\;or.w\\t%T3,%e0\";
  else
    return \"rotl.l\\t%S1\;rotr.l\\t%S1\;xor.w\\t%T3,%T3\;bst\\t#6,%s3\;or.w\\t%T3,%e0\";
}"
  [(set_attr "length" "10")
   (set_attr "cc" "clobber")])

;; Used to OR the exponent of a float.

(define_insn "*iorsi3_shift"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (ior:SI (ashift:SI (match_operand:SI 1 "register_operand" "r")
                           (const_int 23))
                (match_operand:SI 2 "register_operand" "0")))
   (clobber (match_scratch:SI 3 "=&r"))]
  "TARGET_H8300H || TARGET_H8300S"
  "#")

(define_split
  [(parallel
    [(set (match_operand:SI 0 "register_operand" "")
          (ior:SI (ashift:SI (match_operand:SI 1 "register_operand" "")
                             (const_int 23))
                  (match_dup 0)))
     (clobber (match_operand:SI 2 "register_operand" ""))])]
  "(TARGET_H8300H || TARGET_H8300S)
   && flow2_completed
   && find_regno_note (insn, REG_DEAD, REGNO (operands[1]))
   && REGNO (operands[0]) != REGNO (operands[1])"
  [(parallel [(set (match_dup 3)
                   (ashift:HI (match_dup 3)
                              (const_int 7)))
              (clobber (scratch:QI))])
   (set (match_dup 0)
        (ior:SI (ashift:SI (match_dup 1)
                           (const_int 16))
                (match_dup 0)))]
  "operands[3] = gen_rtx_REG (HImode, REGNO (operands[1]));")

(define_split
  [(parallel
    [(set (match_operand:SI 0 "register_operand" "")
          (ior:SI (ashift:SI (match_operand:SI 1 "register_operand" "")
                             (const_int 23))
                  (match_dup 0)))
     (clobber (match_operand:SI 2 "register_operand" ""))])]
  "(TARGET_H8300H || TARGET_H8300S)
   && flow2_completed
   && !(find_regno_note (insn, REG_DEAD, REGNO (operands[1]))
        && REGNO (operands[0]) != REGNO (operands[1]))"
  [(set (match_dup 2)
        (match_dup 1))
   (parallel [(set (match_dup 3)
                   (ashift:HI (match_dup 3)
                              (const_int 7)))
              (clobber (scratch:QI))])
   (set (match_dup 0)
        (ior:SI (ashift:SI (match_dup 2)
                           (const_int 16))
                (match_dup 0)))]
  "operands[3] = gen_rtx_REG (HImode, REGNO (operands[2]));")

(define_insn "*iorsi2_and_1_lshiftrt_1"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (ior:SI (and:SI (match_operand:SI 1 "register_operand" "0")
                        (const_int 1))
                (lshiftrt:SI (match_dup 1)
                             (const_int 1))))]
  "TARGET_H8300H || TARGET_H8300S"
  "shlr.l\\t%S0\;bor\\t#0,%w0\;bst\\t#0,%w0"
  [(set_attr "length" "6")
   (set_attr "cc" "clobber")])

(define_insn_and_split "*iorsi3_ashift_16_ashift_24"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (ior:SI (ashift:SI (match_operand:SI 1 "register_operand" "0")
                           (const_int 16))
                (ashift:SI (match_operand:SI 2 "register_operand" "r")
                           (const_int 24))))]
  "(TARGET_H8300H || TARGET_H8300S)"
  "#"
  "&& reload_completed"
  [(set (match_dup 3)
        (ior:HI (ashift:HI (match_dup 4)
                           (const_int 8))
                (match_dup 3)))
   (parallel [(set (match_dup 0)
                   (ashift:SI (match_dup 0)
                              (const_int 16)))
              (clobber (scratch:QI))])]
  "operands[3] = gen_rtx_REG (HImode, REGNO (operands[0]));
   operands[4] = gen_rtx_REG (HImode, REGNO (operands[2]));")

(define_insn_and_split "*iorsi3_ashift_16_ashift_24_mem"
  [(set (match_operand:SI 0 "register_operand" "=&r")
        (ior:SI (and:SI (ashift:SI (subreg:SI (match_operand:QI 1 "memory_operand" "m") 0)
                                   (const_int 16))
                        (const_int 16711680))
                (ashift:SI (subreg:SI (match_operand:QI 2 "memory_operand" "m") 0)
                           (const_int 24))))]
  "(TARGET_H8300H || TARGET_H8300S)"
  "#"
  "&& reload_completed"
  [(set (match_dup 3)
        (ior:HI (zero_extend:HI (match_dup 1))
                (ashift:HI (subreg:HI (match_dup 2) 0)
                           (const_int 8))))
   (parallel [(set (match_dup 0)
                   (ashift:SI (match_dup 0)
                              (const_int 16)))
              (clobber (scratch:QI))])]
  "operands[3] = gen_rtx_REG (HImode, REGNO (operands[0]));")

;; Used to add the exponent of a float.

(define_insn "*addsi3_shift"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (plus:SI (mult:SI (match_operand:SI 1 "register_operand" "r")
                          (const_int 8388608))
                 (match_operand:SI 2 "register_operand" "0")))
   (clobber (match_scratch:SI 3 "=&r"))]
  "TARGET_H8300H || TARGET_H8300S"
  "#")

(define_split
  [(parallel
    [(set (match_operand:SI 0 "register_operand" "")
          (plus:SI (mult:SI (match_operand:SI 1 "register_operand" "")
                            (const_int 8388608))
                   (match_dup 0)))
     (clobber (match_operand:SI 2 "register_operand" ""))])]
  "(TARGET_H8300H || TARGET_H8300S)
   && flow2_completed
   && find_regno_note (insn, REG_DEAD, REGNO (operands[1]))
   && REGNO (operands[0]) != REGNO (operands[1])"
  [(parallel [(set (match_dup 3)
                   (ashift:HI (match_dup 3)
                              (const_int 7)))
              (clobber (scratch:QI))])
   (set (match_dup 0)
        (plus:SI (mult:SI (match_dup 1)
                          (const_int 65536))
                 (match_dup 0)))]
  "operands[3] = gen_rtx_REG (HImode, REGNO (operands[1]));")

(define_split
  [(parallel
    [(set (match_operand:SI 0 "register_operand" "")
          (plus:SI (mult:SI (match_operand:SI 1 "register_operand" "")
                            (const_int 8388608))
                   (match_dup 0)))
     (clobber (match_operand:SI 2 "register_operand" ""))])]
  "(TARGET_H8300H || TARGET_H8300S)
   && flow2_completed
   && !(find_regno_note (insn, REG_DEAD, REGNO (operands[1]))
        && REGNO (operands[0]) != REGNO (operands[1]))"
  [(set (match_dup 2)
        (match_dup 1))
   (parallel [(set (match_dup 3)
                   (ashift:HI (match_dup 3)
                              (const_int 7)))
              (clobber (scratch:QI))])
   (set (match_dup 0)
        (plus:SI (mult:SI (match_dup 2)
                          (const_int 65536))
                 (match_dup 0)))]
  "operands[3] = gen_rtx_REG (HImode, REGNO (operands[2]));")

;; ashift:SI

(define_insn_and_split "*ashiftsi_sextqi_7"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (ashift:SI (sign_extend:SI (match_operand:QI 1 "register_operand" "0"))
                   (const_int 7)))]
  "(TARGET_H8300H || TARGET_H8300S)"
  "#"
  "&& reload_completed"
  [(parallel [(set (match_dup 2)
                   (ashift:HI (match_dup 2)
                              (const_int 8)))
              (clobber (scratch:QI))])
   (set (match_dup 0)
        (sign_extend:SI (match_dup 2)))
   (parallel [(set (match_dup 0)
                   (ashiftrt:SI (match_dup 0)
                                (const_int 1)))
              (clobber (scratch:QI))])]
  "operands[2] = gen_rtx_REG (HImode, REGNO (operands[0]));")

;; Storing a part of HImode to QImode.

(define_insn ""
  [(set (match_operand:QI 0 "general_operand_dst" "=rm<")
        (subreg:QI (lshiftrt:HI (match_operand:HI 1 "register_operand" "r")
                                (const_int 8)) 1))]
  ""
  "mov.b\\t%t1,%R0"
  [(set_attr "cc" "set_znv")
   (set_attr "length" "8")])

;; Storing a part of SImode to QImode.

(define_insn ""
  [(set (match_operand:QI 0 "general_operand_dst" "=rm<")
        (subreg:QI (lshiftrt:SI (match_operand:SI 1 "register_operand" "r")
                                (const_int 8)) 3))]
  ""
  "mov.b\\t%x1,%R0"
  [(set_attr "cc" "set_znv")
   (set_attr "length" "8")])

(define_insn ""
  [(set (match_operand:QI 0 "general_operand_dst" "=rm<")
        (subreg:QI (lshiftrt:SI (match_operand:SI 1 "register_operand" "r")
                                (const_int 16)) 3))
   (clobber (match_scratch:SI 2 "=&r"))]
  "TARGET_H8300H || TARGET_H8300S"
  "mov.w\\t%e1,%f2\;mov.b\\t%w2,%R0"
  [(set_attr "cc" "set_znv")
   (set_attr "length" "10")])

(define_insn ""
  [(set (match_operand:QI 0 "general_operand_dst" "=rm<")
        (subreg:QI (lshiftrt:SI (match_operand:SI 1 "register_operand" "r")
                                (const_int 24)) 3))
   (clobber (match_scratch:SI 2 "=&r"))]
  "TARGET_H8300H || TARGET_H8300S"
  "mov.w\\t%e1,%f2\;mov.b\\t%x2,%R0"
  [(set_attr "cc" "set_znv")
   (set_attr "length" "10")])

(define_insn_and_split ""
  [(set (pc)
        (if_then_else (eq (zero_extract:SI (subreg:SI (match_operand:QI 0 "register_operand" "") 0)
                                           (const_int 1)
                                           (const_int 7))
                          (const_int 0))
                      (label_ref (match_operand 1 "" ""))
                      (pc)))]
  ""
  "#"
  ""
  [(set (cc0)
        (match_dup 0))
   (set (pc)
        (if_then_else (ge (cc0)
                          (const_int 0))
                      (label_ref (match_dup 1))
                      (pc)))]
  "")

(define_insn_and_split ""
  [(set (pc)
        (if_then_else (ne (zero_extract:SI (subreg:SI (match_operand:QI 0 "register_operand" "") 0)
                                           (const_int 1)
                                           (const_int 7))
                          (const_int 0))
                      (label_ref (match_operand 1 "" ""))
                      (pc)))]
  ""
  "#"
  ""
  [(set (cc0)
        (match_dup 0))
   (set (pc)
        (if_then_else (lt (cc0)
                          (const_int 0))
                      (label_ref (match_dup 1))
                      (pc)))]
  "")
\f
;; -----------------------------------------------------------------
;; PEEPHOLE PATTERNS
;; -----------------------------------------------------------------

;; Convert (A >> B) & C to (A & 255) >> B if C == 255 >> B.

(define_peephole2
  [(parallel
     [(set (match_operand:HI 0 "register_operand" "")
           (lshiftrt:HI (match_dup 0)
                        (match_operand:HI 1 "const_int_operand" "")))
      (clobber (match_operand:HI 2 "" ""))])
   (set (match_dup 0)
        (and:HI (match_dup 0)
                (match_operand:HI 3 "const_int_operand" "")))]
  "INTVAL (operands[3]) == (255 >> INTVAL (operands[1]))"
  [(set (match_dup 0)
        (and:HI (match_dup 0)
                (const_int 255)))
   (parallel
     [(set (match_dup 0)
           (lshiftrt:HI (match_dup 0)
                        (match_dup 1)))
      (clobber (match_dup 2))])]
  "")

;; Convert (A << B) & C to (A & 255) << B if C == 255 << B.

(define_peephole2
  [(parallel
     [(set (match_operand:HI 0 "register_operand" "")
           (ashift:HI (match_dup 0)
                      (match_operand:HI 1 "const_int_operand" "")))
      (clobber (match_operand:HI 2 "" ""))])
   (set (match_dup 0)
        (and:HI (match_dup 0)
                (match_operand:HI 3 "const_int_operand" "")))]
  "INTVAL (operands[3]) == (255 << INTVAL (operands[1]))"
  [(set (match_dup 0)
        (and:HI (match_dup 0)
                (const_int 255)))
   (parallel
     [(set (match_dup 0)
           (ashift:HI (match_dup 0)
                      (match_dup 1)))
      (clobber (match_dup 2))])]
  "")

;; Convert (A >> B) & C to (A & 255) >> B if C == 255 >> B.

(define_peephole2
  [(parallel
     [(set (match_operand:SI 0 "register_operand" "")
           (lshiftrt:SI (match_dup 0)
                        (match_operand:SI 1 "const_int_operand" "")))
      (clobber (match_operand:SI 2 "" ""))])
   (set (match_dup 0)
        (and:SI (match_dup 0)
                (match_operand:SI 3 "const_int_operand" "")))]
  "INTVAL (operands[3]) == (255 >> INTVAL (operands[1]))"
  [(set (match_dup 0)
        (and:SI (match_dup 0)
                (const_int 255)))
   (parallel
     [(set (match_dup 0)
           (lshiftrt:SI (match_dup 0)
                        (match_dup 1)))
      (clobber (match_dup 2))])]
  "")

;; Convert (A << B) & C to (A & 255) << B if C == 255 << B.

(define_peephole2
  [(parallel
     [(set (match_operand:SI 0 "register_operand" "")
           (ashift:SI (match_dup 0)
                      (match_operand:SI 1 "const_int_operand" "")))
      (clobber (match_operand:SI 2 "" ""))])
   (set (match_dup 0)
        (and:SI (match_dup 0)
                (match_operand:SI 3 "const_int_operand" "")))]
  "INTVAL (operands[3]) == (255 << INTVAL (operands[1]))"
  [(set (match_dup 0)
        (and:SI (match_dup 0)
                (const_int 255)))
   (parallel
     [(set (match_dup 0)
           (ashift:SI (match_dup 0)
                      (match_dup 1)))
      (clobber (match_dup 2))])]
  "")

;; Convert (A >> B) & C to (A & 65535) >> B if C == 65535 >> B.

(define_peephole2
  [(parallel
     [(set (match_operand:SI 0 "register_operand" "")
           (lshiftrt:SI (match_dup 0)
                        (match_operand:SI 1 "const_int_operand" "")))
      (clobber (match_operand:SI 2 "" ""))])
   (set (match_dup 0)
        (and:SI (match_dup 0)
                (match_operand:SI 3 "const_int_operand" "")))]
  "INTVAL (operands[3]) == (65535 >> INTVAL (operands[1]))"
  [(set (match_dup 0)
        (and:SI (match_dup 0)
                (const_int 65535)))
   (parallel
     [(set (match_dup 0)
           (lshiftrt:SI (match_dup 0)
                        (match_dup 1)))
      (clobber (match_dup 2))])]
  "")

;; Convert (A << B) & C to (A & 65535) << B if C == 65535 << B.

(define_peephole2
  [(parallel
     [(set (match_operand:SI 0 "register_operand" "")
           (ashift:SI (match_dup 0)
                      (match_operand:SI 1 "const_int_operand" "")))
      (clobber (match_operand:SI 2 "" ""))])
   (set (match_dup 0)
        (and:SI (match_dup 0)
                (match_operand:SI 3 "const_int_operand" "")))]
  "INTVAL (operands[3]) == (65535 << INTVAL (operands[1]))"
  [(set (match_dup 0)
        (and:SI (match_dup 0)
                (const_int 65535)))
   (parallel
     [(set (match_dup 0)
           (ashift:SI (match_dup 0)
                      (match_dup 1)))
      (clobber (match_dup 2))])]
  "")

;; Convert a QImode push into an SImode push so that the
;; define_peephole2 below can cram multiple pushes into one stm.l.

(define_peephole2
  [(parallel [(set (reg:SI SP_REG)
                   (plus:SI (reg:SI SP_REG) (const_int -4)))
              (set (mem:QI (plus:SI (reg:SI SP_REG) (const_int -3)))
                   (match_operand:QI 0 "register_operand" ""))])]
  "TARGET_H8300S"
  [(set (mem:SI (pre_dec:SI (reg:SI SP_REG)))
        (match_dup 0))]
  "operands[0] = gen_rtx_REG (SImode, REGNO (operands[0]));")

;; Convert a HImode push into an SImode push so that the
;; define_peephole2 below can cram multiple pushes into one stm.l.

(define_peephole2
  [(parallel [(set (reg:SI SP_REG)
                   (plus:SI (reg:SI SP_REG) (const_int -4)))
              (set (mem:HI (plus:SI (reg:SI SP_REG) (const_int -2)))
                   (match_operand:HI 0 "register_operand" ""))])]
  "TARGET_H8300S"
  [(set (mem:SI (pre_dec:SI (reg:SI SP_REG)))
        (match_dup 0))]
  "operands[0] = gen_rtx_REG (SImode, REGNO (operands[0]));")

;; Cram four pushes into stm.l.

(define_peephole2
  [(set (mem:SI (pre_dec:SI (reg:SI SP_REG)))
        (match_operand:SI 0 "register_operand" ""))
   (set (mem:SI (pre_dec:SI (reg:SI SP_REG)))
        (match_operand:SI 1 "register_operand" ""))
   (set (mem:SI (pre_dec:SI (reg:SI SP_REG)))
        (match_operand:SI 2 "register_operand" ""))
   (set (mem:SI (pre_dec:SI (reg:SI SP_REG)))
        (match_operand:SI 3 "register_operand" ""))]
  "TARGET_H8300S
   && REGNO (operands[0]) == 0
   && REGNO (operands[1]) == 1
   && REGNO (operands[2]) == 2
   && REGNO (operands[3]) == 3"
  [(parallel [(set (reg:SI SP_REG)
                   (plus:SI (reg:SI SP_REG)
                            (const_int -16)))
              (set (mem:SI (plus:SI (reg:SI SP_REG) (const_int -4)))
                   (match_dup 0))
              (set (mem:SI (plus:SI (reg:SI SP_REG) (const_int -8)))
                   (match_dup 1))
              (set (mem:SI (plus:SI (reg:SI SP_REG) (const_int -12)))
                   (match_dup 2))
              (set (mem:SI (plus:SI (reg:SI SP_REG) (const_int -16)))
                   (match_dup 3))])]
  "")

;; Cram three pushes into stm.l.

(define_peephole2
  [(set (mem:SI (pre_dec:SI (reg:SI SP_REG)))
        (match_operand:SI 0 "register_operand" ""))
   (set (mem:SI (pre_dec:SI (reg:SI SP_REG)))
        (match_operand:SI 1 "register_operand" ""))
   (set (mem:SI (pre_dec:SI (reg:SI SP_REG)))
        (match_operand:SI 2 "register_operand" ""))]
  "TARGET_H8300S
   && ((REGNO (operands[0]) == 0
        && REGNO (operands[1]) == 1
        && REGNO (operands[2]) == 2)
       || (REGNO (operands[0]) == 4
           && REGNO (operands[1]) == 5
           && REGNO (operands[2]) == 6))"
  [(parallel [(set (reg:SI SP_REG)
                   (plus:SI (reg:SI SP_REG)
                            (const_int -12)))
              (set (mem:SI (plus:SI (reg:SI SP_REG) (const_int -4)))
                   (match_dup 0))
              (set (mem:SI (plus:SI (reg:SI SP_REG) (const_int -8)))
                   (match_dup 1))
              (set (mem:SI (plus:SI (reg:SI SP_REG) (const_int -12)))
                   (match_dup 2))])]
  "")

;; Cram two pushes into stm.l.

(define_peephole2
  [(set (mem:SI (pre_dec:SI (reg:SI SP_REG)))
        (match_operand:SI 0 "register_operand" ""))
   (set (mem:SI (pre_dec:SI (reg:SI SP_REG)))
        (match_operand:SI 1 "register_operand" ""))]
  "TARGET_H8300S
   && ((REGNO (operands[0]) == 0 && REGNO (operands[1]) == 1)
       || (REGNO (operands[0]) == 2 && REGNO (operands[1]) == 3)
       || (REGNO (operands[0]) == 4 && REGNO (operands[1]) == 5))"
  [(parallel [(set (reg:SI SP_REG)
                   (plus:SI (reg:SI SP_REG)
                            (const_int -8)))
              (set (mem:SI (plus:SI (reg:SI SP_REG) (const_int -4)))
                   (match_dup 0))
              (set (mem:SI (plus:SI (reg:SI SP_REG) (const_int -8)))
                   (match_dup 1))])]
  "")

;; Turn
;;
;;   mov.w #2,r0
;;   add.w r7,r0  (6 bytes)
;;
;; into
;;
;;   mov.w r7,r0
;;   adds  #2,r0  (4 bytes)

(define_peephole2
  [(set (match_operand:HI 0 "register_operand" "")
        (match_operand:HI 1 "const_int_operand" ""))
   (set (match_dup 0)
        (plus:HI (match_dup 0)
                 (match_operand:HI 2 "register_operand" "")))]
  "REG_P (operands[0]) && REG_P (operands[2])
   && REGNO (operands[0]) != REGNO (operands[2])
   && (CONST_OK_FOR_J (INTVAL (operands[1]))
       || CONST_OK_FOR_L (INTVAL (operands[1]))
       || CONST_OK_FOR_N (INTVAL (operands[1])))"
  [(set (match_dup 0)
        (match_dup 2))
   (set (match_dup 0)
        (plus:HI (match_dup 0)
                 (match_dup 1)))]
  "")

;; Turn
;;
;;   sub.l  er0,er0
;;   add.b  #4,r0l
;;   add.l  er7,er0  (6 bytes)
;;
;; into
;;
;;   mov.l  er7,er0
;;   adds   #4,er0   (4 bytes)

(define_peephole2
  [(set (match_operand:SI 0 "register_operand" "")
        (match_operand:SI 1 "const_int_operand" ""))
   (set (match_dup 0)
        (plus:SI (match_dup 0)
                 (match_operand:SI 2 "register_operand" "")))]
  "(TARGET_H8300H || TARGET_H8300S)
   && REG_P (operands[0]) && REG_P (operands[2])
   && REGNO (operands[0]) != REGNO (operands[2])
   && (CONST_OK_FOR_L (INTVAL (operands[1]))
       || CONST_OK_FOR_N (INTVAL (operands[1])))"
  [(set (match_dup 0)
        (match_dup 2))
   (set (match_dup 0)
        (plus:SI (match_dup 0)
                 (match_dup 1)))]
  "")

;; Turn
;;
;;   mov.l er7,er0
;;   add.l #10,er0  (takes 8 bytes)
;;
;; into
;;
;;   sub.l er0,er0
;;   add.b #10,r0l
;;   add.l er7,er0  (takes 6 bytes)

(define_peephole2
  [(set (match_operand:SI 0 "register_operand" "")
        (match_operand:SI 1 "register_operand" ""))
   (set (match_dup 0)
        (plus:SI (match_dup 0)
                 (match_operand:SI 2 "const_int_operand" "")))]
  "(TARGET_H8300H || TARGET_H8300S)
   && REG_P (operands[0]) && REG_P (operands[1])
   && REGNO (operands[0]) != REGNO (operands[1])
   && !CONST_OK_FOR_L (INTVAL (operands[2]))
   && !CONST_OK_FOR_N (INTVAL (operands[2]))
   && ((INTVAL (operands[2]) & 0xff) == INTVAL (operands[2])
       || (INTVAL (operands[2]) & 0xff00) == INTVAL (operands[2])
       || INTVAL (operands[2]) == 0xffff
       || INTVAL (operands[2]) == 0xfffe)"
  [(set (match_dup 0)
        (match_dup 2))
   (set (match_dup 0)
        (plus:SI (match_dup 0)
                 (match_dup 1)))]
  "")

;; Turn
;;
;;   subs   #1,er4
;;   mov.w  r4,r4
;;   bne    .L2028
;;
;; into
;;
;;   dec.w  #1,r4
;;   bne    .L2028

(define_peephole2
  [(set (match_operand:HI 0 "register_operand" "")
        (plus:HI (match_dup 0)
                 (match_operand 1 "incdec_operand" "")))
   (set (cc0)
        (match_dup 0))
   (set (pc)
        (if_then_else (match_operator 3 "eqne_operator"
                        [(cc0) (const_int 0)])
                      (label_ref (match_operand 2 "" ""))
                      (pc)))]
  "TARGET_H8300H || TARGET_H8300S"
  [(set (match_operand:HI 0 "register_operand" "")
        (unspec:HI [(match_dup 0)
                    (match_dup 1)]
                   UNSPEC_INCDEC))
   (set (cc0)
        (match_dup 0))
   (set (pc)
        (if_then_else (match_op_dup 3 [(cc0) (const_int 0)])
                      (label_ref (match_dup 2))
                      (pc)))]
  "")

;; The SImode version of the previous pattern.

(define_peephole2
  [(set (match_operand:SI 0 "register_operand" "")
        (plus:SI (match_dup 0)
                 (match_operand 1 "incdec_operand" "")))
   (set (cc0)
        (match_dup 0))
   (set (pc)
        (if_then_else (match_operator 3 "eqne_operator"
                        [(cc0) (const_int 0)])
                      (label_ref (match_operand 2 "" ""))
                      (pc)))]
  "TARGET_H8300H || TARGET_H8300S"
  [(set (match_operand:SI 0 "register_operand" "")
        (unspec:SI [(match_dup 0)
                    (match_dup 1)]
                   UNSPEC_INCDEC))
   (set (cc0)
        (match_dup 0))
   (set (pc)
        (if_then_else (match_op_dup 3 [(cc0) (const_int 0)])
                      (label_ref (match_dup 2))
                      (pc)))]
  "")

(define_peephole2
  [(parallel [(set (cc0)
                   (zero_extract:SI (match_operand:QI 0 "register_operand" "")
                                    (const_int 1)
                                    (const_int 7)))
              (clobber (scratch:QI))])
   (set (pc)
        (if_then_else (match_operator 1 "eqne_operator"
                        [(cc0) (const_int 0)])
                      (label_ref (match_operand 2 "" ""))
                      (pc)))]
  "(TARGET_H8300H || TARGET_H8300S)"
  [(set (cc0)
        (match_dup 0))
   (set (pc)
        (if_then_else (match_op_dup 3 [(cc0) (const_int 0)])
                      (label_ref (match_dup 2))
                      (pc)))]
  "operands[3] = ((GET_CODE (operands[1]) == EQ)
                  ? gen_rtx_GE (VOIDmode, cc0_rtx, const0_rtx)
                  : gen_rtx_LT (VOIDmode, cc0_rtx, const0_rtx));")

(define_peephole2
  [(set (match_operand:SI 0 "register_operand" "")
        (match_operand:SI 1 "general_operand" ""))
   (set (match_dup 0)
        (and:SI (match_dup 0)
                (const_int 255)))]
  "(TARGET_H8300H || TARGET_H8300S)
   && !reg_overlap_mentioned_p (operands[0], operands[1])
   && !(GET_CODE (operands[1]) == MEM && MEM_VOLATILE_P (operands[1]))"
  [(set (match_dup 0)
        (const_int 0))
   (set (strict_low_part (match_dup 2))
        (match_dup 3))]
  "operands[2] = gen_lowpart (QImode, operands[0]);
   operands[3] = gen_lowpart (QImode, operands[1]);")

(define_peephole2
  [(set (match_operand:SI 0 "register_operand" "")
        (match_operand:SI 1 "memory_operand" ""))
   (set (match_dup 0)
        (and:SI (match_dup 0)
                (match_operand:SI 2 "const_int_operand" "")))]
  "(TARGET_H8300H || TARGET_H8300S)
   && !(GET_CODE (operands[1]) == MEM && MEM_VOLATILE_P (operands[1]))
   && (INTVAL (operands[2]) & ~0xffff) == 0
   && INTVAL (operands[2]) != 255"
  [(set (match_dup 3)
        (match_dup 4))
   (set (match_dup 0)
        (and:SI (match_dup 0)
                (match_dup 2)))]
  "operands[3] = gen_lowpart (HImode, operands[0]);
   operands[4] = gen_lowpart (HImode, operands[1]);")

;; (compare (reg:SI) (const_int)) takes 6 bytes, so we try to achieve
;; the equivalent with shorter sequences.  Here is the summary.  Cases
;; are grouped for each define_peephole2.
;;
;; reg  const_int                   use     insn
;; --------------------------------------------------------
;; live    -2                       eq/ne   copy and inc.l
;; live    -1                       eq/ne   copy and inc.l
;; live     1                       eq/ne   copy and dec.l
;; live     2                       eq/ne   copy and dec.l
;;
;; dead    -2                       eq/ne   inc.l
;; dead    -1                       eq/ne   inc.l
;; dead     1                       eq/ne   dec.l
;; dead     2                       eq/ne   dec.l
;;
;; dead -131072                     eq/ne   inc.w and test
;; dead  -65536                     eq/ne   inc.w and test
;; dead   65536                     eq/ne   inc.w and test
;; dead  131072                     eq/ne   inc.w and test
;;
;; dead 0x000000?? except 1 and 2   eq/ne   xor.b and test
;; dead 0x0000??00                  eq/ne   xor.b and test
;; dead 0x0000ffff                  eq/ne   not.w and test
;;
;; dead 0xffffff?? except -1 and -2 eq/ne   xor.b and not.l
;; dead 0xffff??ff                  eq/ne   xor.b and not.l
;;
;; dead     1                       geu/ltu and.b and test
;; dead     3                       geu/ltu and.b and test
;; dead     7                       geu/ltu and.b and test
;; dead    15                       geu/ltu and.b and test
;; dead    31                       geu/ltu and.b and test
;; dead    63                       geu/ltu and.b and test
;; dead   127                       geu/ltu and.b and test
;; dead   255                       geu/ltu and.b and test
;;
;; dead 65535                       geu/ltu mov.w

;; For a small constant, it is cheaper to actually do the subtraction
;; and then test the register.

(define_peephole2
  [(set (cc0)
        (compare (match_operand:HI 0 "register_operand" "")
                 (match_operand:HI 1 "incdec_operand" "")))
   (set (pc)
        (if_then_else (match_operator 3 "eqne_operator"
                        [(cc0) (const_int 0)])
                      (label_ref (match_operand 2 "" ""))
                      (pc)))]
  "(TARGET_H8300H || TARGET_H8300S)
   && peep2_reg_dead_p (1, operands[0])"
  [(set (match_dup 0)
        (unspec:HI [(match_dup 0)
                    (match_dup 4)]
                   UNSPEC_INCDEC))
   (set (cc0)
        (match_dup 0))
   (set (pc)
        (if_then_else (match_op_dup 3 [(cc0) (const_int 0)])
                      (label_ref (match_dup 2))
                      (pc)))]
  "operands[4] = GEN_INT (- INTVAL (operands[1]));")

;; The SImode version of the previous pattern.

(define_peephole2
  [(set (cc0)
        (compare (match_operand:SI 0 "register_operand" "")
                 (match_operand:SI 1 "incdec_operand" "")))
   (set (pc)
        (if_then_else (match_operator 3 "eqne_operator"
                        [(cc0) (const_int 0)])
                      (label_ref (match_operand 2 "" ""))
                      (pc)))]
  "(TARGET_H8300H || TARGET_H8300S)
   && peep2_reg_dead_p (1, operands[0])"
  [(set (match_dup 0)
        (unspec:SI [(match_dup 0)
                    (match_dup 4)]
                   UNSPEC_INCDEC))
   (set (cc0)
        (match_dup 0))
   (set (pc)
        (if_then_else (match_op_dup 3 [(cc0) (const_int 0)])
                      (label_ref (match_dup 2))
                      (pc)))]
  "operands[4] = GEN_INT (- INTVAL (operands[1]));")

(define_peephole2
  [(set (cc0)
        (compare (match_operand:SI 0 "register_operand" "")
                 (match_operand:SI 1 "const_int_operand" "")))
   (set (pc)
        (if_then_else (match_operator 3 "eqne_operator"
                        [(cc0) (const_int 0)])
                      (label_ref (match_operand 2 "" ""))
                      (pc)))]
  "(TARGET_H8300H || TARGET_H8300S)
   && peep2_reg_dead_p (1, operands[0])
   && (INTVAL (operands[1]) == -131072
       || INTVAL (operands[1]) == -65536
       || INTVAL (operands[1]) == 65536
       || INTVAL (operands[1]) == 131072)"
  [(set (match_dup 0)
        (plus:SI (match_dup 0)
                 (match_dup 4)))
   (set (cc0)
        (match_dup 0))
   (set (pc)
        (if_then_else (match_op_dup 3 [(cc0) (const_int 0)])
                      (label_ref (match_dup 2))
                      (pc)))]
  "operands[4] = GEN_INT (- INTVAL (operands[1]));")

;; For certain (in)equaltity comparisions against a constant, we can
;; XOR the register with the constant, and test the register against
;; 0.

(define_peephole2
  [(set (cc0)
        (compare (match_operand:SI 0 "register_operand" "")
                 (match_operand:SI 1 "const_int_operand" "")))
   (set (pc)
        (if_then_else (match_operator 3 "eqne_operator"
                        [(cc0) (const_int 0)])
                      (label_ref (match_operand 2 "" ""))
                      (pc)))]
  "(TARGET_H8300H || TARGET_H8300S)
   && peep2_reg_dead_p (1, operands[0])
   && ((INTVAL (operands[1]) & 0x00ff) == INTVAL (operands[1])
       || (INTVAL (operands[1]) & 0xff00) == INTVAL (operands[1])
       || INTVAL (operands[1]) == 0x0000ffff)
   && INTVAL (operands[1]) != 1
   && INTVAL (operands[1]) != 2"
  [(set (match_dup 0)
        (xor:SI (match_dup 0)
                (match_dup 1)))
   (set (cc0)
        (match_dup 0))
   (set (pc)
        (if_then_else (match_op_dup 3 [(cc0) (const_int 0)])
                      (label_ref (match_dup 2))
                      (pc)))]
  "")

(define_peephole2
  [(set (cc0)
        (compare (match_operand:SI 0 "register_operand" "")
                 (match_operand:SI 1 "const_int_operand" "")))
   (set (pc)
        (if_then_else (match_operator 3 "eqne_operator"
                        [(cc0) (const_int 0)])
                      (label_ref (match_operand 2 "" ""))
                      (pc)))]
  "(TARGET_H8300H || TARGET_H8300S)
   && peep2_reg_dead_p (1, operands[0])
   && ((INTVAL (operands[1]) | 0x00ff) == -1
        || (INTVAL (operands[1]) | 0xff00) == -1)
   && INTVAL (operands[1]) != -1
   && INTVAL (operands[1]) != -2"
  [(set (match_dup 0)
        (xor:SI (match_dup 0)
                (match_dup 4)))
   (set (match_dup 0)
        (not:SI (match_dup 0)))
   (set (cc0)
        (match_dup 0))
   (set (pc)
        (if_then_else (match_op_dup 3 [(cc0) (const_int 0)])
                      (label_ref (match_dup 2))
                      (pc)))]
  "operands[4] = GEN_INT (INTVAL (operands[1]) ^ -1);")

;; Transform A <= 1 to (A & 0xfffffffe) == 0.

(define_peephole2
  [(set (cc0)
        (compare (match_operand:SI 0 "register_operand" "")
                 (match_operand:SI 1 "const_int_operand" "")))
   (set (pc)
        (if_then_else (match_operator 2 "gtuleu_operator"
                        [(cc0) (const_int 0)])
                      (label_ref (match_operand 3 "" ""))
                      (pc)))]
  "(TARGET_H8300H || TARGET_H8300S)
   && peep2_reg_dead_p (1, operands[0])
   && (INTVAL (operands[1]) == 1
       || INTVAL (operands[1]) == 3
       || INTVAL (operands[1]) == 7
       || INTVAL (operands[1]) == 15
       || INTVAL (operands[1]) == 31
       || INTVAL (operands[1]) == 63
       || INTVAL (operands[1]) == 127
       || INTVAL (operands[1]) == 255)"
  [(set (match_dup 0)
        (and:SI (match_dup 0)
                (match_dup 5)))
   (set (cc0)
        (match_dup 0))
   (set (pc)
        (if_then_else (match_dup 4)
                      (label_ref (match_dup 3))
                      (pc)))]
  "operands[4] = ((GET_CODE (operands[2]) == GTU) ?
                  gen_rtx_NE (VOIDmode, cc0_rtx, const0_rtx) :
                  gen_rtx_EQ (VOIDmode, cc0_rtx, const0_rtx));
   operands[5] = GEN_INT (~INTVAL (operands[1]));")

;; Transform A <= 255 to (A & 0xff00) == 0.

(define_peephole2
  [(set (cc0)
        (compare (match_operand:HI 0 "register_operand" "")
                 (const_int 255)))
   (set (pc)
        (if_then_else (match_operator 1 "gtuleu_operator"
                        [(cc0) (const_int 0)])
                      (label_ref (match_operand 2 "" ""))
                      (pc)))]
  "TARGET_H8300H || TARGET_H8300S"
  [(set (cc0)
        (and:HI (match_dup 0)
                (const_int -256)))
   (set (pc)
        (if_then_else (match_dup 4)
                      (label_ref (match_dup 2))
                      (pc)))]
  "operands[4] = ((GET_CODE (operands[1]) == GTU) ?
                  gen_rtx_NE (VOIDmode, cc0_rtx, const0_rtx) :
                  gen_rtx_EQ (VOIDmode, cc0_rtx, const0_rtx));")

;; Transform A <= 65535 to (A & 0xffff0000) == 0.

(define_peephole2
  [(set (cc0)
        (compare (match_operand:SI 0 "register_operand" "")
                 (const_int 65535)))
   (set (pc)
        (if_then_else (match_operator 1 "gtuleu_operator"
                        [(cc0) (const_int 0)])
                      (label_ref (match_operand 2 "" ""))
                      (pc)))]
  "TARGET_H8300H || TARGET_H8300S"
  [(set (cc0)
        (and:SI (match_dup 0)
                (const_int -65536)))
   (set (pc)
        (if_then_else (match_dup 4)
                      (label_ref (match_dup 2))
                      (pc)))]
  "operands[4] = ((GET_CODE (operands[1]) == GTU) ?
                  gen_rtx_NE (VOIDmode, cc0_rtx, const0_rtx) :
                  gen_rtx_EQ (VOIDmode, cc0_rtx, const0_rtx));")

;; For constants like -1, -2, 1, 2, it is still cheaper to make a copy
;; of the register being tested, do the subtraction on the copy, and
;; then test the copy.  We avoid this transformation if we see more
;; than one copy of the same compare insn.

(define_peephole2
  [(match_scratch:SI 4 "r")
   (set (cc0)
        (compare (match_operand:SI 0 "register_operand" "")
                 (match_operand:SI 1 "incdec_operand" "")))
   (set (pc)
        (if_then_else (match_operator 3 "eqne_operator"
                        [(cc0) (const_int 0)])
                      (label_ref (match_operand 2 "" ""))
                      (pc)))]
  "(TARGET_H8300H || TARGET_H8300S)
   && !peep2_reg_dead_p (1, operands[0])
   && !rtx_equal_p (PATTERN (insn),
                    PATTERN (next_nonnote_insn (next_nonnote_insn (insn))))"
  [(set (match_dup 4)
        (match_dup 0))
   (set (match_dup 4)
        (unspec:SI [(match_dup 4)
                    (match_dup 5)]
                   UNSPEC_INCDEC))
   (set (cc0)
        (match_dup 4))
   (set (pc)
        (if_then_else (match_op_dup 3 [(cc0) (const_int 0)])
                      (label_ref (match_dup 2))
                      (pc)))]
  "operands[5] = GEN_INT (- INTVAL (operands[1]));")

;; Narrow the mode of testing if possible.

(define_peephole2
  [(set (match_operand:HI 0 "register_operand" "")
        (and:HI (match_dup 0)
                (match_operand:HI 1 "const_int_qi_operand" "")))
   (set (cc0)
        (match_dup 0))
   (set (pc)
        (if_then_else (match_operator 3 "eqne_operator"
                        [(cc0) (const_int 0)])
                      (label_ref (match_operand 2 "" ""))
                      (pc)))]
  "peep2_reg_dead_p (2, operands[0])"
  [(set (match_dup 4)
        (and:QI (match_dup 4)
                (match_dup 5)))
   (set (cc0)
        (match_dup 4))
   (set (pc)
        (if_then_else (match_op_dup 3 [(cc0) (const_int 0)])
                      (label_ref (match_dup 2))
                      (pc)))]
  "operands[4] = gen_rtx_REG (QImode, REGNO (operands[0]));
   operands[5] = GEN_INT (trunc_int_for_mode (INTVAL (operands[1]), QImode));")

(define_peephole2
  [(set (match_operand:SI 0 "register_operand" "")
        (and:SI (match_dup 0)
                (match_operand:SI 1 "const_int_qi_operand" "")))
   (set (cc0)
        (match_dup 0))
   (set (pc)
        (if_then_else (match_operator 3 "eqne_operator"
                        [(cc0) (const_int 0)])
                      (label_ref (match_operand 2 "" ""))
                      (pc)))]
  "peep2_reg_dead_p (2, operands[0])"
  [(set (match_dup 4)
        (and:QI (match_dup 4)
                (match_dup 5)))
   (set (cc0)
        (match_dup 4))
   (set (pc)
        (if_then_else (match_op_dup 3 [(cc0) (const_int 0)])
                      (label_ref (match_dup 2))
                      (pc)))]
  "operands[4] = gen_rtx_REG (QImode, REGNO (operands[0]));
   operands[5] = GEN_INT (trunc_int_for_mode (INTVAL (operands[1]), QImode));")

(define_peephole2
  [(set (match_operand:SI 0 "register_operand" "")
        (and:SI (match_dup 0)
                (match_operand:SI 1 "const_int_hi_operand" "")))
   (set (cc0)
        (match_dup 0))
   (set (pc)
        (if_then_else (match_operator 3 "eqne_operator"
                        [(cc0) (const_int 0)])
                      (label_ref (match_operand 2 "" ""))
                      (pc)))]
  "peep2_reg_dead_p (2, operands[0])"
  [(set (match_dup 4)
        (and:HI (match_dup 4)
                (match_dup 5)))
   (set (cc0)
        (match_dup 4))
   (set (pc)
        (if_then_else (match_op_dup 3 [(cc0) (const_int 0)])
                      (label_ref (match_dup 2))
                      (pc)))]
  "operands[4] = gen_rtx_REG (HImode, REGNO (operands[0]));
   operands[5] = GEN_INT (trunc_int_for_mode (INTVAL (operands[1]), HImode));")

(define_peephole2
  [(set (match_operand:SI 0 "register_operand" "")
        (and:SI (match_dup 0)
                (match_operand:SI 1 "const_int_qi_operand" "")))
   (set (match_dup 0)
        (xor:SI (match_dup 0)
                (match_operand:SI 2 "const_int_qi_operand" "")))
   (set (cc0)
        (match_dup 0))
   (set (pc)
        (if_then_else (match_operator 4 "eqne_operator"
                        [(cc0) (const_int 0)])
                      (label_ref (match_operand 3 "" ""))
                      (pc)))]
  "peep2_reg_dead_p (3, operands[0])
   && (~INTVAL (operands[1]) & INTVAL (operands[2])) == 0"
  [(set (match_dup 5)
        (and:QI (match_dup 5)
                (match_dup 6)))
   (set (match_dup 5)
        (xor:QI (match_dup 5)
                (match_dup 7)))
   (set (cc0)
        (match_dup 5))
   (set (pc)
        (if_then_else (match_op_dup 4 [(cc0) (const_int 0)])
                      (label_ref (match_dup 3))
                      (pc)))]
  "operands[5] = gen_rtx_REG (QImode, REGNO (operands[0]));
   operands[6] = GEN_INT (trunc_int_for_mode (INTVAL (operands[1]), QImode));
   operands[7] = GEN_INT (trunc_int_for_mode (INTVAL (operands[2]), QImode));")