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

;; GCC machine description for Renesas H8/300
;; Copyright (C) 1992-2016 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 3, 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 COPYING3.  If not see
;; <http://www.gnu.org/licenses/>.

;; We compute exact length on each instruction for most of the time.
;; In some case, most notably bit operations that may involve memory
;; operands, the lengths in this file are "worst case".

;; 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
  [(UNSPEC_MOVMD        100)
   (UNSPEC_STPCPY       101)])

(define_constants
  [(R0_REG       0)
   (SC_REG       3)
   (COUNTER_REG  4)
   (SOURCE_REG   5)
   (DESTINATION_REG 6)
   (HFP_REG      6)
   (SP_REG       7)
   (MAC_REG      8)
   (AP_REG       9)
   (RAP_REG     10)
   (FP_REG      11)])

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

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

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

(define_attr "length_table" "none,addb,addw,addl,logicb,movb,movw,movl,mova_zero,mova,unary,mov_imm4,short_immediate,bitfield,bitbranch"
  (const_string "none"))

;; The size of instructions in bytes.

(define_attr "length" ""
  (cond [(eq_attr "type" "branch")
         ;; In a forward delayed branch, (pc) represents the end of the
         ;; delay sequence, not the end of the branch itself.
         (if_then_else (and (ge (minus (match_dup 0) (pc))
                                (const_int -126))
                            (le (plus (minus (match_dup 0) (pc))
                                      (symbol_ref "DELAY_SLOT_LENGTH (insn)"))
                                (const_int 125)))
                       (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)))
         (eq_attr "type" "bitbranch")
         (if_then_else (and (ge (minus (match_dup 0) (pc))
                                (const_int -126))
                            (le (minus (match_dup 0) (pc))
                                (const_int 126)))
                       (plus (symbol_ref "h8300_insn_length_from_table (insn, operands)")
                             (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))))
                                     (plus (symbol_ref "h8300_insn_length_from_table (insn, operands)")
                                           (const_int 4))
                                     (plus (symbol_ref "h8300_insn_length_from_table (insn, operands)")
                                           (const_int 6))))
         (eq_attr "length_table" "!none")
         (symbol_ref "h8300_insn_length_from_table (insn, operands)")]
        (const_int 200)))

;; 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"))

;; Type of delay slot.  NONE means the instruction has no delay slot.
;; JUMP means it is an unconditional jump that (if short enough)
;; could be implemented using bra/s.

(define_attr "delay_slot" "none,jump"
  (const_string "none"))

;; "yes" if the instruction can be put into a delay slot.  It's not
;; entirely clear that jsr is not valid in delay slots, but it
;; definitely doesn't have the effect of causing the called function
;; to return to the target of the delayed branch.

(define_attr "can_delay" "no,yes"
  (cond [(eq_attr "type" "branch,bitbranch,call")
           (const_string "no")
         (geu (symbol_ref "get_attr_length (insn)") (const_int 2))
           (const_string "no")]
        (const_string "yes")))

;; Only allow jumps to have a delay slot if we think they might
;; be short enough.  This is just an optimization: we don't know
;; for certain whether they will be or not.

(define_delay (and (eq_attr "delay_slot" "jump")
                   (eq (symbol_ref "get_attr_length (insn)") (const_int 2)))
  [(eq_attr "can_delay" "yes")
   (nil)
   (nil)])

;; Provide the maximum length of an assembly instruction in an asm
;; statement.  The maximum length of 14 bytes is achieved on H8SX.

(define_asm_attributes
  [(set (attr "length")
        (cond [(match_test "TARGET_H8300") (const_int 4)
               (match_test "TARGET_H8300H") (const_int 10)
               (match_test "TARGET_H8300S") (const_int 10)]
              (const_int 14)))])

(include "predicates.md")
(include "constraints.md")
\f
;; ----------------------------------------------------------------------
;; MACRO DEFINITIONS
;; ----------------------------------------------------------------------

;; This mode iterator allows :P to be used for patterns that operate on
;; pointer-sized quantities.  Exactly one of the two alternatives will match.

(define_mode_iterator P [(HI "Pmode == HImode") (SI "Pmode == SImode")])

\f
;; ----------------------------------------------------------------------
;; MOVE INSTRUCTIONS
;; ----------------------------------------------------------------------

;; movqi

(define_insn "*movqi_h8300"
  [(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
   && h8300_move_ok (operands[0], operands[1])"
  "@
   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 "*movqi_h8300hs"
  [(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) && !TARGET_H8300SX
    && h8300_move_ok (operands[0], operands[1])"
  "@
   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")
        (symbol_ref "compute_mov_length (operands)"))
   (set_attr "cc" "set_zn,set_znv,set_znv,clobber,set_znv,set_znv")])

(define_insn "*movqi_h8sx"
  [(set (match_operand:QI 0 "general_operand_dst" "=Z,rQ")
        (match_operand:QI 1 "general_operand_src" "P4>X,rQi"))]
  "TARGET_H8300SX"
  "@
    mov.b       %X1:4,%X0
    mov.b       %X1,%X0"
  [(set_attr "length_table" "mov_imm4,movb")
   (set_attr "cc" "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 (!TARGET_H8300SX && !h8300_move_ok (operands[0], operands[1]))
      operands[1] = copy_to_mode_reg (QImode, operands[1]);
  })

(define_insn "movstrictqi"
  [(set (strict_low_part (match_operand:QI 0 "general_operand_dst" "+r,r"))
                         (match_operand:QI 1 "general_operand_src" "I,rmi>"))]
  ""
  "@
   sub.b        %X0,%X0
   mov.b        %X1,%X0"
  [(set_attr "length" "2,*")
   (set_attr "length_table" "*,movb")
   (set_attr "cc" "set_zn,set_znv")])

;; movhi

(define_insn "*movhi_h8300"
  [(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
   && h8300_move_ok (operands[0], 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")
        (symbol_ref "compute_mov_length (operands)"))
   (set_attr "cc" "set_zn,set_znv,set_znv,set_znv,set_znv,set_znv")])

(define_insn "*movhi_h8300hs"
  [(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) && !TARGET_H8300SX
    && h8300_move_ok (operands[0], 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")
        (symbol_ref "compute_mov_length (operands)"))
   (set_attr "cc" "set_zn,set_znv,set_znv,set_znv,set_znv,set_znv")])

(define_insn "*movhi_h8sx"
  [(set (match_operand:HI 0 "general_operand_dst" "=r,r,Z,Q,rQ")
        (match_operand:HI 1 "general_operand_src" "I,P3>X,P4>X,IP8>X,rQi"))]
  "TARGET_H8300SX"
  "@
   sub.w        %T0,%T0
   mov.w        %T1:3,%T0
   mov.w        %T1:4,%T0
   mov.w        %T1,%T0
   mov.w        %T1,%T0"
  [(set_attr "length_table" "*,*,mov_imm4,short_immediate,movw")
   (set_attr "length" "2,2,*,*,*")
   (set_attr "cc" "set_zn,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 (!h8300_move_ok (operands[0], operands[1]))
      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"))
                         (match_operand:HI 1 "general_operand_src" "I,P3>X,rmi"))]
  ""
  "@
   sub.w        %T0,%T0
   mov.w        %T1,%T0
   mov.w        %T1,%T0"
  [(set_attr "length" "2,2,*")
   (set_attr "length_table" "*,*,movw")
   (set_attr "cc" "set_zn,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 (h8300_expand_movsi (operands))
          DONE;
      }
    else if (!TARGET_H8300SX)
      {
        /* One of the ops has to be in a register.  */
        if (!h8300_move_ok (operands[0], operands[1]))
          operands[1] = copy_to_mode_reg (SImode, 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
   && h8300_move_ok (operands[0], operands[1])"
{
  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
        {
          if (GET_CODE (operands[1]) == CONST_INT)
            {
              /* If either half is zero, use sub.w to clear that
                 half.  */
              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";
              /* If the upper half and the lower half are the same,
                 copy one half to the other.  */
              if ((INTVAL (operands[1]) & 0xffff)
                  == ((INTVAL (operands[1]) >> 16) & 0xffff))
                return "mov.w\\t%e1,%e0\;mov.w\\t%e0,%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:
      gcc_unreachable ();
    }
}
  [(set (attr "length")
        (symbol_ref "compute_mov_length (operands)"))])

(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) && !TARGET_H8300SX
    && h8300_move_ok (operands[0], 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")
        (symbol_ref "compute_mov_length (operands)"))
   (set_attr "cc" "set_zn,set_znv,clobber,set_znv,set_znv,set_znv,set_znv,none_0hit,none_0hit,set_znv")])

(define_insn "*movsi_h8sx"
  [(set (match_operand:SI 0 "general_operand_dst" "=r,r,Q,rQ,*a,*a,r")
        (match_operand:SI 1 "general_operand_src" "I,P3>X,IP8>X,rQi,I,r,*a"))]
  "TARGET_H8300SX"
  "@
   sub.l        %S0,%S0
   mov.l        %S1:3,%S0
   mov.l        %S1,%S0
   mov.l        %S1,%S0
   clrmac
   clrmac\;ldmac        %1,macl
   stmac        macl,%0"
  [(set_attr "length_table" "*,*,short_immediate,movl,*,*,*")
   (set_attr "length" "2,2,*,*,2,6,4")
   (set_attr "cc" "set_zn,set_znv,set_znv,set_znv,none_0hit,none_0hit,set_znv")])

(define_insn "*movsf_h8sx"
  [(set (match_operand:SF 0 "general_operand_dst" "=r,rQ")
        (match_operand:SF 1 "general_operand_src" "G,rQi"))]
  "TARGET_H8300SX"
  "@
    sub.l       %S0,%S0
    mov.l       %S1,%S0"
  [(set_attr "length" "2,*")
   (set_attr "length_table" "*,movl")
   (set_attr "cc" "set_zn,set_znv")])

;; Implement block moves using movmd.  Defining movmemsi allows the full
;; range of constant lengths (up to 0x40000 bytes when using movmd.l).
;; See h8sx_emit_movmd for details.

(define_expand "movmemsi"
  [(use (match_operand:BLK 0 "memory_operand" ""))
   (use (match_operand:BLK 1 "memory_operand" ""))
   (use (match_operand:SI 2 "" ""))
   (use (match_operand:SI 3 "const_int_operand" ""))]
  "TARGET_H8300SX"
  {
    if (h8sx_emit_movmd (operands[0], operands[1], operands[2], INTVAL (operands[3])))
      DONE;
    else
      FAIL;
  })

;; Expander for generating movmd insns.  Operand 0 is the destination
;; memory region, operand 1 is the source, operand 2 is the counter
;; register and operand 3 is the chunk size (1, 2 or 4).

(define_expand "movmd"
  [(parallel
    [(set (match_operand:BLK 0 "memory_operand" "")
          (match_operand:BLK 1 "memory_operand" ""))
     (unspec [(match_operand:HI 2 "register_operand" "")
              (match_operand:HI 3 "const_int_operand" "")] UNSPEC_MOVMD)
     (clobber (match_dup 4))
     (clobber (match_dup 5))
     (set (match_dup 2)
          (const_int 0))])]
  "TARGET_H8300SX"
  {
    operands[4] = copy_rtx (XEXP (operands[0], 0));
    operands[5] = copy_rtx (XEXP (operands[1], 0));
  })

;; This is a difficult instruction to reload since operand 0 must be the
;; frame pointer.  See h8300_reg_class_from_letter for an explanation.

(define_insn "movmd_internal_normal"
  [(set (mem:BLK (match_operand:HI 3 "register_operand" "0,r"))
        (mem:BLK (match_operand:HI 4 "register_operand" "1,1")))
   (unspec [(match_operand:HI 5 "register_operand" "2,2")
            (match_operand:HI 6 "const_int_operand" "n,n")] UNSPEC_MOVMD)
   (clobber (match_operand:HI 0 "register_operand" "=d,??D"))
   (clobber (match_operand:HI 1 "register_operand" "=f,f"))
   (set (match_operand:HI 2 "register_operand" "=c,c")
        (const_int 0))]
  "TARGET_H8300SX && TARGET_NORMAL_MODE"
  "@
    movmd%m6
    #"
  [(set_attr "length" "2,14")
   (set_attr "can_delay" "no")
   (set_attr "cc" "none,clobber")])

(define_insn "movmd_internal"
  [(set (mem:BLK (match_operand:SI 3 "register_operand" "0,r"))
        (mem:BLK (match_operand:SI 4 "register_operand" "1,1")))
   (unspec [(match_operand:HI 5 "register_operand" "2,2")
            (match_operand:HI 6 "const_int_operand" "n,n")] UNSPEC_MOVMD)
   (clobber (match_operand:SI 0 "register_operand" "=d,??D"))
   (clobber (match_operand:SI 1 "register_operand" "=f,f"))
   (set (match_operand:HI 2 "register_operand" "=c,c")
        (const_int 0))]
  "TARGET_H8300SX && !TARGET_NORMAL_MODE"
  "@
    movmd%m6
    #"
  [(set_attr "length" "2,14")
   (set_attr "can_delay" "no")
   (set_attr "cc" "none,clobber")])

;; Split the above instruction if the destination register isn't er6.
;; We need a sequence like:
;;
;;      mov.l   er6,@-er7
;;      mov.l   <dest>,er6
;;      movmd.sz
;;      mov.l   er6,<dest>
;;      mov.l   @er7+,er6
;;
;; where <dest> is the current destination register (operand 4).
;; The fourth instruction will be deleted if <dest> dies here.

(define_split
  [(set (match_operand:BLK 0 "memory_operand" "")
        (match_operand:BLK 1 "memory_operand" ""))
   (unspec [(match_operand:HI 2 "register_operand" "")
            (match_operand:HI 3 "const_int_operand" "")] UNSPEC_MOVMD)
   (clobber (match_operand:HI 4 "register_operand" ""))
   (clobber (match_operand:HI 5 "register_operand" ""))
   (set (match_dup 2)
        (const_int 0))]
  "TARGET_H8300SX && TARGET_NORMAL_MODE && reload_completed
   && REGNO (operands[4]) != DESTINATION_REG"
  [(const_int 0)]
  {
    rtx dest;

    h8300_swap_into_er6 (XEXP (operands[0], 0));
    dest = replace_equiv_address (operands[0], hard_frame_pointer_rtx);
    emit_insn (gen_movmd (dest, operands[1], operands[2], operands[3]));
    h8300_swap_out_of_er6 (operands[4]);
    DONE;
  })

(define_split
  [(set (match_operand:BLK 0 "memory_operand" "")
        (match_operand:BLK 1 "memory_operand" ""))
   (unspec [(match_operand:HI 2 "register_operand" "")
            (match_operand:HI 3 "const_int_operand" "")] UNSPEC_MOVMD)
   (clobber (match_operand:SI 4 "register_operand" ""))
   (clobber (match_operand:SI 5 "register_operand" ""))
   (set (match_dup 2)
        (const_int 0))]
  "TARGET_H8300SX && !TARGET_NORMAL_MODE && reload_completed
   && REGNO (operands[4]) != DESTINATION_REG"
  [(const_int 0)]
  {
    rtx dest;

    h8300_swap_into_er6 (XEXP (operands[0], 0));
    dest = replace_equiv_address (operands[0], hard_frame_pointer_rtx);
    emit_insn (gen_movmd (dest, operands[1], operands[2], operands[3]));
    h8300_swap_out_of_er6 (operands[4]);
    DONE;
  })

;; Expand a call to stpcpy() using movsd.  Operand 0 should point to
;; the final character, but movsd leaves it pointing to the character
;; after that.

(define_expand "movstr"
  [(use (match_operand 0 "register_operand" ""))
   (use (match_operand:BLK 1 "memory_operand" ""))
   (use (match_operand:BLK 2 "memory_operand" ""))]
  "TARGET_H8300SX"
  {
    operands[1] = replace_equiv_address
      (operands[1], copy_to_mode_reg (Pmode, XEXP (operands[1], 0)));
    operands[2] = replace_equiv_address
      (operands[2], copy_to_mode_reg (Pmode, XEXP (operands[2], 0)));
    emit_insn (gen_movsd (operands[1], operands[2], gen_reg_rtx (Pmode)));
    emit_insn (gen_add3_insn (operands[0], XEXP (operands[1], 0), constm1_rtx));
    DONE;
  })

;; Expander for generating a movsd instruction.  Operand 0 is the
;; destination string, operand 1 is the source string and operand 2
;; is a scratch register.

(define_expand "movsd"
  [(parallel
    [(set (match_operand:BLK 0 "memory_operand" "")
          (unspec:BLK [(match_operand:BLK 1 "memory_operand" "")]
          UNSPEC_STPCPY))
     (clobber (match_dup 3))
     (clobber (match_dup 4))
     (clobber (match_operand 2 "register_operand" ""))])]
  "TARGET_H8300SX"
  {
    operands[3] = copy_rtx (XEXP (operands[0], 0));
    operands[4] = copy_rtx (XEXP (operands[1], 0));
  })

;; See comments above memcpy_internal().

(define_insn "stpcpy_internal_normal"
  [(set (mem:BLK (match_operand:HI 3 "register_operand" "0,r"))
        (unspec:BLK [(mem:BLK (match_operand:HI 4 "register_operand" "1,1"))]
        UNSPEC_STPCPY))
   (clobber (match_operand:HI 0 "register_operand" "=d,??D"))
   (clobber (match_operand:HI 1 "register_operand" "=f,f"))
   (clobber (match_operand:HI 2 "register_operand" "=c,c"))]
  "TARGET_H8300SX && TARGET_NORMAL_MODE"
  "@
    \n1:\tmovsd\t2f\;bra\t1b\n2:
    #"
  [(set_attr "length" "6,18")
   (set_attr "cc" "none,clobber")])

(define_insn "stpcpy_internal"
  [(set (mem:BLK (match_operand:SI 3 "register_operand" "0,r"))
        (unspec:BLK [(mem:BLK (match_operand:SI 4 "register_operand" "1,1"))]
        UNSPEC_STPCPY))
   (clobber (match_operand:SI 0 "register_operand" "=d,??D"))
   (clobber (match_operand:SI 1 "register_operand" "=f,f"))
   (clobber (match_operand:SI 2 "register_operand" "=c,c"))]
  "TARGET_H8300SX && !TARGET_NORMAL_MODE"
  "@
    \n1:\tmovsd\t2f\;bra\t1b\n2:
    #"
  [(set_attr "length" "6,18")
   (set_attr "cc" "none,clobber")])

;; Split the above instruction if the destination isn't er6.  This works
;; in the same way as the movmd splitter.

(define_split
  [(set (match_operand:BLK 0 "memory_operand" "")
        (unspec:BLK [(match_operand:BLK 1 "memory_operand" "")] UNSPEC_STPCPY))
   (clobber (match_operand:HI 2 "register_operand" ""))
   (clobber (match_operand:HI 3 "register_operand" ""))
   (clobber (match_operand:HI 4 "register_operand" ""))]
  "TARGET_H8300SX && TARGET_NORMAL_MODE && reload_completed
   && REGNO (operands[2]) != DESTINATION_REG"
  [(const_int 0)]
  {
    rtx dest;

    h8300_swap_into_er6 (XEXP (operands[0], 0));
    dest = replace_equiv_address (operands[0], hard_frame_pointer_rtx);
    emit_insn (gen_movsd (dest, operands[1], operands[4]));
    h8300_swap_out_of_er6 (operands[2]);
    DONE;
  })

(define_split
  [(set (match_operand:BLK 0 "memory_operand" "")
        (unspec:BLK [(match_operand:BLK 1 "memory_operand" "")] UNSPEC_STPCPY))
   (clobber (match_operand:SI 2 "register_operand" ""))
   (clobber (match_operand:SI 3 "register_operand" ""))
   (clobber (match_operand:SI 4 "register_operand" ""))]
  "TARGET_H8300SX && !TARGET_NORMAL_MODE && reload_completed
   && REGNO (operands[2]) != DESTINATION_REG"
  [(const_int 0)]
  {
    rtx dest;

    h8300_swap_into_er6 (XEXP (operands[0], 0));
    dest = replace_equiv_address (operands[0], hard_frame_pointer_rtx);
    emit_insn (gen_movsd (dest, operands[1], operands[4]));
    h8300_swap_out_of_er6 (operands[2]);
    DONE;
  })

(include "mova.md")

(define_expand "movsf"
  [(set (match_operand:SF 0 "general_operand_dst" "")
        (match_operand:SF 1 "general_operand_src" ""))]
  ""
  {
    if (TARGET_H8300)
      {
        if (h8300_expand_movsi (operands))
          DONE;
      }
    else if (!TARGET_H8300SX)
      {
        /* 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 "*movsf_h8300"
  [(set (match_operand:SF 0 "general_operand_dst" "=r,r,r,o,<,r")
        (match_operand:SF 1 "general_operand_src" "G,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:
      gcc_unreachable ();
    }
}
  [(set (attr "length")
        (symbol_ref "compute_mov_length (operands)"))])

(define_insn "*movsf_h8300hs"
  [(set (match_operand:SF 0 "general_operand_dst" "=r,r,r,m,<,r")
        (match_operand:SF 1 "general_operand_src" "G,r,im,r,r,>"))]
  "(TARGET_H8300H || TARGET_H8300S) && !TARGET_H8300SX
    && (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")
        (symbol_ref "compute_mov_length (operands)"))
   (set_attr "cc" "set_zn,set_znv,set_znv,set_znv,set_znv,set_znv")])
\f
;; ----------------------------------------------------------------------
;; PUSH INSTRUCTIONS
;; ----------------------------------------------------------------------

(define_insn "*pushqi1_h8300"
  [(set (mem:QI
        (pre_modify:HI
          (reg:HI SP_REG)
          (plus:HI (reg:HI SP_REG) (const_int -2))))
        (match_operand:QI 0 "register_no_sp_elim_operand" "r"))]
  "TARGET_H8300"
  "mov.w\\t%T0,@-r7"
  [(set_attr "length" "2")])

(define_insn "*pushqi1_h8300hs_<mode>"
  [(set (mem:QI
        (pre_modify:P
          (reg:P SP_REG)
          (plus:P (reg:P SP_REG) (const_int -4))))
        (match_operand:QI 0 "register_no_sp_elim_operand" "r"))]
  "TARGET_H8300H || TARGET_H8300S"
  "mov.l\\t%S0,@-er7"
  [(set_attr "length" "4")])

(define_insn "*pushhi1_h8300hs_<mode>"
  [(set (mem:HI
        (pre_modify:P
          (reg:P SP_REG)
          (plus:P (reg:P SP_REG) (const_int -4))))
        (match_operand:HI 0 "register_no_sp_elim_operand" "r"))]
  "TARGET_H8300H || TARGET_H8300S"
  "mov.l\\t%S0,@-er7"
  [(set_attr "length" "4")])
\f
;; ----------------------------------------------------------------------
;; TEST INSTRUCTIONS
;; ----------------------------------------------------------------------

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

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

(define_insn_and_split "*tst_extzv_1_n"
  [(set (cc0) 
        (compare (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"))
                 (const_int 0)))
   (clobber (match_scratch:QI 2 "=X,X,&r"))]
  "TARGET_H8300H || TARGET_H8300S"
  "@
   btst\\t%Z1,%Y0
   btst\\t%Z1,%Y0
   #"
  "&& reload_completed
   && !satisfies_constraint_U (operands[0])"
  [(set (match_dup 2)
        (match_dup 0))
   (parallel [(set (cc0) (compare (zero_extract:SI (match_dup 2)
                                                   (const_int 1)
                                                   (match_dup 1))
                                  (const_int 0)))
              (clobber (scratch:QI))])]
  ""
  [(set_attr "length" "2,8,10")
   (set_attr "cc" "set_zn,set_zn,set_zn")])

(define_insn ""
  [(set (cc0) 
        (compare (zero_extract:SI (match_operand:SI 0 "register_operand" "r")
                                  (const_int 1)
                                  (match_operand 1 "const_int_operand" "n"))
                 (const_int 0)))]
  "(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) 
        (compare (zero_extract:SI (match_operand:SI 0 "register_operand" "r")
                                  (const_int 1)
                                  (match_operand 1 "const_int_operand" "n"))
                 (const_int 0)))
   (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)
        (compare (zero_extract:SI (match_dup 2)
                                  (const_int 1)
                                  (match_dup 3))
                 (const_int 0)))]
  {
    operands[3] = GEN_INT (INTVAL (operands[1]) - 16);
  })

(define_insn "*tstsi_variable_bit"
  [(set (cc0)
        (compare (zero_extract:SI (match_operand:SI 0 "register_operand" "r")
                                  (const_int 1)
                                  (and:SI (match_operand:SI 1 "register_operand" "r")
                                          (const_int 7)))
                 (const_int 0)))]
  "TARGET_H8300H || TARGET_H8300S"
  "btst %w1,%w0"
  [(set_attr "length" "2")
   (set_attr "cc" "set_zn")])

(define_insn_and_split "*tstsi_variable_bit_qi"
  [(set (cc0)
        (compare (zero_extract:SI (zero_extend:SI (match_operand:QI 0 "general_operand_src" "r,U,mn>"))
                                  (const_int 1)
                                  (and:SI (match_operand:SI 1 "register_operand" "r,r,r")
                                          (const_int 7)))
                 (const_int 0)))
   (clobber (match_scratch:QI 2 "=X,X,&r"))]
  "TARGET_H8300H || TARGET_H8300S"
  "@
   btst\\t%w1,%X0
   btst\\t%w1,%X0
   #"
  "&& reload_completed
   && !satisfies_constraint_U (operands[0])"
  [(set (match_dup 2)
        (match_dup 0))
   (parallel [(set (cc0)
                   (compare (zero_extract:SI (zero_extend:SI (match_dup 2))
                                             (const_int 1)
                                             (and:SI (match_dup 1)
                                                     (const_int 7)))
                            (const_int 0)))
              (clobber (scratch:QI))])]
  ""
  [(set_attr "length" "2,8,10")
   (set_attr "cc" "set_zn,set_zn,set_zn")])

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

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

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

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

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

(define_insn "*cmpqi"
  [(set (cc0)
        (compare (match_operand:QI 0 "h8300_dst_operand" "rQ")
                 (match_operand:QI 1 "h8300_src_operand" "rQi")))]
  ""
  "cmp.b        %X1,%X0"
  [(set_attr "length_table" "addb")
   (set_attr "cc" "compare")])

(define_insn "*cmphi_h8300_znvc"
  [(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_znvc"
  [(set (cc0)
        (compare (match_operand:HI 0 "h8300_dst_operand" "rU,rQ")
                 (match_operand:HI 1 "h8300_src_operand" "P3>X,rQi")))]
  "TARGET_H8300H || TARGET_H8300S"
{
  switch (which_alternative)
    {
    case 0:
      if (!TARGET_H8300SX)
        return "cmp.w   %T1,%T0";
      else
        return "cmp.w   %T1:3,%T0";
    case 1:
      return "cmp.w     %T1,%T0";
    default:
      gcc_unreachable ();
      }
}
  [(set_attr "length_table" "short_immediate,addw")
   (set_attr "cc" "compare,compare")])

(define_insn "cmpsi"
  [(set (cc0)
        (compare (match_operand:SI 0 "h8300_dst_operand" "r,rQ")
                 (match_operand:SI 1 "h8300_src_operand" "P3>X,rQi")))]
  "TARGET_H8300H || TARGET_H8300S"
{
  switch (which_alternative)
    {
    case 0:
      if (!TARGET_H8300SX)
        return "cmp.l   %S1,%S0";
      else
        return "cmp.l   %S1:3,%S0";
    case 1:
      return "cmp.l     %S1,%S0";
    default:
      gcc_unreachable ();
    }
}
  [(set_attr "length" "2,*")
   (set_attr "length_table" "*,addl")
   (set_attr "cc" "compare,compare")])
\f
;; ----------------------------------------------------------------------
;; ADD INSTRUCTIONS
;; ----------------------------------------------------------------------

(define_expand "addqi3"
  [(set (match_operand:QI 0 "register_operand" "")
        (plus:QI (match_operand:QI 1 "register_operand" "")
                 (match_operand:QI 2 "h8300_src_operand" "")))]
  ""
  "")

(define_insn "*addqi3"
  [(set (match_operand:QI 0 "h8300_dst_operand" "=rQ")
        (plus:QI (match_operand:QI 1 "h8300_dst_operand" "%0")
                 (match_operand:QI 2 "h8300_src_operand" "rQi")))]
  "h8300_operands_match_p (operands)"
  "add.b        %X2,%X0"
  [(set_attr "length_table" "addb")
   (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 "h8300_src_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 "h8300_src_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 && epilogue_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 "h8300_src_operand" "L,N,J,n,r")))]
  "(TARGET_H8300H || TARGET_H8300S) && !TARGET_H8300SX"
  "@
   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_insn "*addhi3_h8sx"
  [(set (match_operand:HI 0 "h8300_dst_operand" "=rU,rU,r,rQ")
        (plus:HI (match_operand:HI 1 "h8300_dst_operand" "%0,0,0,0")
                 (match_operand:HI 2 "h8300_src_operand" "P3>X,P3<X,J,rQi")))]
  "TARGET_H8300SX && h8300_operands_match_p (operands)"
  "@
   add.w        %T2:3,%T0
   sub.w        %G2:3,%T0
   add.b        %t2,%t0
   add.w        %T2,%T0"
  [(set_attr "length_table" "short_immediate,short_immediate,*,addw")
   (set_attr "length" "*,*,2,*")
   (set_attr "cc" "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 "h8300_src_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 "h8300_src_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_h8300hs"
  [(set (match_operand:SI 0 "h8300_dst_operand" "=rQ,rQ")
        (plus:SI (match_operand:SI 1 "h8300_dst_operand" "%0,0")
                 (match_operand:SI 2 "h8300_src_operand" "i,rQ")))]
  "(TARGET_H8300H || TARGET_H8300S) && h8300_operands_match_p (operands)"
{  
  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_expand "subqi3"
  [(set (match_operand:QI 0 "register_operand" "")
        (minus:QI (match_operand:QI 1 "register_operand" "")
                  (match_operand:QI 2 "h8300_src_operand" "")))]
  ""
  "")

(define_insn "*subqi3"
  [(set (match_operand:QI 0 "h8300_dst_operand" "=rQ")
        (minus:QI (match_operand:QI 1 "h8300_dst_operand" "0")
                  (match_operand:QI 2 "h8300_dst_operand" "rQ")))]
  "h8300_operands_match_p (operands)"
  "sub.b        %X2,%X0"
  [(set_attr "length_table" "addb")
   (set_attr "cc" "set_zn")])

(define_expand "subhi3"
  [(set (match_operand:HI 0 "register_operand" "")
        (minus:HI (match_operand:HI 1 "register_operand" "")
                  (match_operand:HI 2 "h8300_src_operand" "")))]
  ""
  "")

(define_insn "*subhi3_h8300"
  [(set (match_operand:HI 0 "register_operand" "=r,r")
        (minus:HI (match_operand:HI 1 "register_operand" "0,0")
                  (match_operand:HI 2 "h8300_src_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 "*subhi3_h8300hs"
  [(set (match_operand:HI 0 "h8300_dst_operand" "=rQ,rQ")
        (minus:HI (match_operand:HI 1 "h8300_dst_operand" "0,0")
                  (match_operand:HI 2 "h8300_src_operand" "rQ,i")))]
  "(TARGET_H8300H || TARGET_H8300S) && h8300_operands_match_p (operands)"
  "@
   sub.w        %T2,%T0
   sub.w        %T2,%T0"
  [(set_attr "length_table" "addw")
   (set_attr "cc" "set_zn")])

(define_expand "subsi3"
  [(set (match_operand:SI 0 "register_operand" "")
        (minus:SI (match_operand:SI 1 "register_operand" "")
                  (match_operand:SI 2 "h8300_src_operand" "")))]
  ""
  {
    if (TARGET_H8300)
      operands[2] = force_reg (SImode, operands[2]);
  })

(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")])

(define_insn "*subsi3_h8300hs"
  [(set (match_operand:SI 0 "h8300_dst_operand" "=rQ,rQ")
        (minus:SI (match_operand:SI 1 "h8300_dst_operand" "0,0")
                  (match_operand:SI 2 "h8300_src_operand" "rQ,i")))]
  "(TARGET_H8300H || TARGET_H8300S) && h8300_operands_match_p (operands)"
  "@
   sub.l        %S2,%S0
   sub.l        %S2,%S0"
  [(set_attr "length_table" "addl")
   (set_attr "cc" "set_zn")])
\f
;; ----------------------------------------------------------------------
;; MULTIPLY INSTRUCTIONS
;; ----------------------------------------------------------------------

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

(define_expand "mulqihi3"
  [(set (match_operand:HI 0 "register_operand" "")
        (mult:HI (sign_extend:HI (match_operand:QI 1 "register_operand" ""))
                 ;; intentionally-mismatched modes
                 (match_operand:QI 2 "reg_or_nibble_operand" "")))]
  "TARGET_H8300H || TARGET_H8300S"
  {
    if (GET_MODE (operands[2]) != VOIDmode)
      operands[2] = gen_rtx_SIGN_EXTEND (HImode, operands[2]);
  })

(define_insn "*mulqihi3_const"
  [(set (match_operand:HI 0 "register_operand" "=r")
        (mult:HI (sign_extend:HI (match_operand:QI 1 "register_operand" "%0"))
                 (match_operand:QI 2 "nibble_operand" "IP4>X")))]
  "TARGET_H8300SX"
  "mulxs.b      %X2,%T0"
  [(set_attr "length" "4")
   (set_attr "cc" "set_zn")])

(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_expand "mulhisi3"
  [(set (match_operand:SI 0 "register_operand" "")
        (mult:SI (sign_extend:SI (match_operand:HI 1 "register_operand" ""))
                 ;; intentionally-mismatched modes
                 (match_operand:HI 2 "reg_or_nibble_operand" "")))]
  "TARGET_H8300H || TARGET_H8300S"
  {
    if (GET_MODE (operands[2]) != VOIDmode)
      operands[2] = gen_rtx_SIGN_EXTEND (SImode, operands[2]);
  })

(define_insn "*mulhisi3_const"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (mult:SI (sign_extend:SI (match_operand:HI 1 "register_operand" "%0"))
                 (match_operand:SI 2 "nibble_operand" "IP4>X")))]
  "TARGET_H8300SX"
  "mulxs.w      %T2,%S0"
  [(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_expand "umulqihi3"
  [(set (match_operand:HI 0 "register_operand" "")
        (mult:HI (zero_extend:HI (match_operand:QI 1 "register_operand" ""))
                 ;; intentionally-mismatched modes
                 (match_operand:QI 2 "reg_or_nibble_operand" "")))]
  "TARGET_H8300H || TARGET_H8300S"
  {
    if (GET_MODE (operands[2]) != VOIDmode)
      operands[2] = gen_rtx_ZERO_EXTEND (HImode, operands[2]);
  })

(define_insn "*umulqihi3_const"
  [(set (match_operand:HI 0 "register_operand" "=r")
        (mult:HI (zero_extend:HI (match_operand:QI 1 "register_operand" "%0"))
                 (match_operand:QI 2 "nibble_operand" "IP4>X")))]
  "TARGET_H8300SX"
  "mulxu.b      %X2,%T0"
  [(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.b      %X2,%T0"
  [(set_attr "length" "2")
   (set_attr "cc" "none_0hit")])

(define_expand "umulhisi3"
  [(set (match_operand:SI 0 "register_operand" "")
        (mult:SI (zero_extend:SI (match_operand:HI 1 "register_operand" ""))
                 ;; intentionally-mismatched modes
                 (match_operand:HI 2 "reg_or_nibble_operand" "")))]
  "TARGET_H8300H || TARGET_H8300S"
  {
    if (GET_MODE (operands[2]) != VOIDmode)
      operands[2] = gen_rtx_ZERO_EXTEND (SImode, operands[2]);
  })

(define_insn "*umulhisi3_const"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (mult:SI (zero_extend:SI (match_operand:HI 1 "register_operand" "%0"))
                 (match_operand:SI 2 "nibble_operand" "IP4>X")))]
  "TARGET_H8300SX"
  "mulxu.w      %T2,%S0"
  [(set_attr "length" "4")
   (set_attr "cc" "set_zn")])

(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")])

;; We could have used mulu.[wl] here, but mulu.[lw] is only available
;; on a H8SX with a multiplier, whereas muls.w seems to be available
;; on all H8SX variants.

(define_insn "mulhi3"
  [(set (match_operand:HI 0 "register_operand" "=r")
        (mult:HI (match_operand:HI 1 "register_operand" "%0")
                 (match_operand:HI 2 "reg_or_nibble_operand" "r IP4>X")))]
  "TARGET_H8300SX"
  "muls.w\\t%T2,%T0"
  [(set_attr "length" "2")
   (set_attr "cc" "set_zn")])

(define_insn "mulsi3"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (mult:SI (match_operand:SI 1 "register_operand" "%0")
                 (match_operand:SI 2 "reg_or_nibble_operand" "r IP4>X")))]
  "TARGET_H8300SX"
  "muls.l\\t%S2,%S0"
  [(set_attr "length" "2")
   (set_attr "cc" "set_zn")])

(define_insn "smulsi3_highpart"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (truncate:SI
         (lshiftrt:DI
          (mult:DI
           (sign_extend:DI (match_operand:SI 1 "register_operand" "%0"))
           (sign_extend:DI (match_operand:SI 2 "reg_or_nibble_operand" "r IP4>X")))
          (const_int 32))))]
  "TARGET_H8300SXMUL"
  "muls/u.l\\t%S2,%S0"
  [(set_attr "length" "2")
   (set_attr "cc" "set_zn")])

(define_insn "umulsi3_highpart"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (truncate:SI
          (ashiftrt:DI
            (mult:DI
              (zero_extend:DI (match_operand:SI 1 "register_operand" "%0"))
              (zero_extend:DI (match_operand:SI 2 "reg_or_nibble_operand" "r IP4>X")))
            (const_int 32))))]
  "TARGET_H8300SX"
  "mulu/u.l\\t%S2,%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 "udivhi3"
  [(set (match_operand:HI 0 "register_operand" "=r")
        (udiv:HI (match_operand:HI 1 "register_operand" "0")
                 (match_operand:HI 2 "reg_or_nibble_operand" "r IP4>X")))]
  "TARGET_H8300SX"
  "divu.w\\t%T2,%T0"
  [(set_attr "length" "2")])
  
(define_insn "divhi3"
  [(set (match_operand:HI 0 "register_operand" "=r")
        (div:HI (match_operand:HI 1 "register_operand" "0")
                (match_operand:HI 2 "reg_or_nibble_operand" "r IP4>X")))]
  "TARGET_H8300SX"
  "divs.w\\t%T2,%T0"
  [(set_attr "length" "2")])
  
(define_insn "udivsi3"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (udiv:SI (match_operand:SI 1 "register_operand" "0")
                 (match_operand:SI 2 "reg_or_nibble_operand" "r IP4>X")))]
  "TARGET_H8300SX"
  "divu.l\\t%S2,%S0"
  [(set_attr "length" "2")])
  
(define_insn "divsi3"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (div:SI (match_operand:SI 1 "register_operand" "0")
                (match_operand:SI 2 "reg_or_nibble_operand" "r IP4>X")))]
  "TARGET_H8300SX"
  "divs.l\\t%S2,%S0"
  [(set_attr "length" "2")])
  
(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")])

(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")])

(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")])

(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")])
\f
;; ----------------------------------------------------------------------
;; AND INSTRUCTIONS
;; ----------------------------------------------------------------------

(define_insn "bclrqi_msx"
  [(set (match_operand:QI 0 "bit_register_indirect_operand" "=WU")
        (and:QI (match_operand:QI 1 "bit_register_indirect_operand" "%0")
                (match_operand:QI 2 "single_zero_operand" "Y0")))]
  "TARGET_H8300SX && rtx_equal_p (operands[0], operands[1])"
  "bclr\\t%W2,%0"
  [(set_attr "length" "8")])

(define_split
  [(set (match_operand:HI 0 "bit_register_indirect_operand")
        (and:HI (match_operand:HI 1 "bit_register_indirect_operand")
                (match_operand:HI 2 "single_zero_operand")))]
  "TARGET_H8300SX"
  [(set (match_dup 0)
        (and:QI (match_dup 1)
                (match_dup 2)))]
  {
    if (abs (INTVAL (operands[2])) > 0xFF)
      {
        operands[0] = adjust_address (operands[0], QImode, 0);
        operands[1] = adjust_address (operands[1], QImode, 0);
        operands[2] = GEN_INT ((INTVAL (operands[2])) >> 8);
      }
    else
      {
        operands[0] = adjust_address (operands[0], QImode, 1);
        operands[1] = adjust_address (operands[1], QImode, 1);
      }
  })

(define_insn "bclrhi_msx"
  [(set (match_operand:HI 0 "bit_register_indirect_operand" "=m")
        (and:HI (match_operand:HI 1 "bit_register_indirect_operand" "%0")
                (match_operand:HI 2 "single_zero_operand" "Y0")))]
  "TARGET_H8300SX"
  "bclr\\t%W2,%0"
  [(set_attr "length" "8")])

(define_insn "*andqi3_2"
  [(set (match_operand:QI 0 "bit_operand" "=U,rQ,r")
        (and:QI (match_operand:QI 1 "bit_operand" "%0,0,WU")
                (match_operand:QI 2 "h8300_src_operand" "Y0,rQi,IP1>X")))]
  "TARGET_H8300SX"
  "@
   bclr\\t %W2,%R0
   and  %X2,%X0
   bfld %2,%1,%R0"
  [(set_attr "length" "8,*,8")
   (set_attr "length_table" "*,logicb,*")
   (set_attr "cc" "none_0hit,set_znv,none_0hit")])

(define_insn "andqi3_1"
  [(set (match_operand:QI 0 "bit_operand" "=U,r")
        (and:QI (match_operand:QI 1 "bit_operand" "%0,0")
                (match_operand:QI 2 "h8300_src_operand" "Y0,rn")))]
  "register_operand (operands[0], QImode)
   || single_zero_operand (operands[2], QImode)"
  "@
   bclr %W2,%R0
   and  %X2,%X0"
  [(set_attr "length" "2,8")
   (set_attr "cc" "none_0hit,set_znv")])

(define_expand "andqi3"
  [(set (match_operand:QI 0 "register_operand" "")
        (and:QI (match_operand:QI 1 "register_operand" "")
                (match_operand:QI 2 "h8300_src_operand" "")))]
  ""
  "")

(define_expand "andhi3"
  [(set (match_operand:HI 0 "register_operand" "")
        (and:HI (match_operand:HI 1 "register_operand" "")
                (match_operand:HI 2 "h8300_src_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")])

(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")])

(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")])

(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")])

(define_expand "andsi3"
  [(set (match_operand:SI 0 "register_operand" "")
        (and:SI (match_operand:SI 1 "register_operand" "")
                (match_operand:SI 2 "h8300_src_operand" "")))]
  ""
  "")

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

(define_insn "bsetqi_msx"
  [(set (match_operand:QI 0 "bit_register_indirect_operand" "=WU")
        (ior:QI (match_operand:QI 1 "bit_register_indirect_operand" "%0")
                (match_operand:QI 2 "single_one_operand" "Y2")))]
  "TARGET_H8300SX && rtx_equal_p (operands[0], operands[1])"
  "bset\\t%V2,%0"
  [(set_attr "length" "8")])

(define_split
  [(set (match_operand:HI 0 "bit_register_indirect_operand")
        (ior:HI (match_operand:HI 1 "bit_register_indirect_operand")
                (match_operand:HI 2 "single_one_operand")))]
  "TARGET_H8300SX"
  [(set (match_dup 0)
        (ior:QI (match_dup 1)
                (match_dup 2)))]
  {
    if (abs (INTVAL (operands[2])) > 0xFF)
      {
        operands[0] = adjust_address (operands[0], QImode, 0);
        operands[1] = adjust_address (operands[1], QImode, 0);
        operands[2] = GEN_INT ((INTVAL (operands[2])) >> 8);
      }
    else
      {
        operands[0] = adjust_address (operands[0], QImode, 1);
        operands[1] = adjust_address (operands[1], QImode, 1);
      }
  })

(define_insn "bsethi_msx"
  [(set (match_operand:HI 0 "bit_register_indirect_operand" "=m")
        (ior:HI (match_operand:HI 1 "bit_register_indirect_operand" "%0")
                (match_operand:HI 2 "single_one_operand" "Y2")))]
  "TARGET_H8300SX"
  "bset\\t%V2,%0"
  [(set_attr "length" "8")])

(define_insn "iorqi3_1"
  [(set (match_operand:QI 0 "bit_operand" "=U,rQ")
        (ior:QI (match_operand:QI 1 "bit_operand" "%0,0")
                (match_operand:QI 2 "h8300_src_operand" "Y2,rQi")))]
  "TARGET_H8300SX || register_operand (operands[0], QImode)
   || single_one_operand (operands[2], QImode)"
  "@
   bset\\t%V2,%R0
   or\\t%X2,%X0"
  [(set_attr "length" "8,*")
   (set_attr "length_table" "*,logicb")
   (set_attr "cc" "none_0hit,set_znv")])


(define_expand "iorqi3"
  [(set (match_operand:QI 0 "register_operand" "")
        (ior:QI (match_operand:QI 1 "register_operand" "")
                (match_operand:QI 2 "h8300_src_operand" "")))]
  ""
  "")

(define_expand "iorhi3"
  [(set (match_operand:HI 0 "register_operand" "")
        (ior:HI (match_operand:HI 1 "register_operand" "")
                (match_operand:HI 2 "h8300_src_operand" "")))]
  ""
  "")

(define_expand "iorsi3"
  [(set (match_operand:SI 0 "register_operand" "")
        (ior:SI (match_operand:SI 1 "register_operand" "")
                (match_operand:SI 2 "h8300_src_operand" "")))]
  ""
  "")

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

(define_insn "bnotqi_msx"
  [(set (match_operand:QI 0 "bit_register_indirect_operand" "=WU")
        (xor:QI (match_operand:QI 1 "bit_register_indirect_operand" "%0")
                (match_operand:QI 2 "single_one_operand" "Y2")))]
  "TARGET_H8300SX
   && rtx_equal_p (operands[0], operands[1])"
  "bnot\\t%V2,%0"
  [(set_attr "length" "8")])

(define_split
  [(set (match_operand:HI 0 "bit_register_indirect_operand")
        (xor:HI (match_operand:HI 1 "bit_register_indirect_operand")
                (match_operand:HI 2 "single_one_operand")))]
  "TARGET_H8300SX"
  [(set (match_dup 0)
        (xor:QI (match_dup 1)
                (match_dup 2)))]
  {
    if (abs (INTVAL (operands[2])) > 0xFF)
      {
        operands[0] = adjust_address (operands[0], QImode, 0);
        operands[1] = adjust_address (operands[1], QImode, 0);
        operands[2] = GEN_INT ((INTVAL (operands[2])) >> 8);
      }
    else
      {
        operands[0] = adjust_address (operands[0], QImode, 1);
        operands[1] = adjust_address (operands[1], QImode, 1);
      }
  })

(define_insn "bnothi_msx"
  [(set (match_operand:HI 0 "bit_register_indirect_operand" "=m")
        (xor:HI (match_operand:HI 1 "bit_register_indirect_operand" "%0")
                (match_operand:HI 2 "single_one_operand" "Y2")))]
  "TARGET_H8300SX"
  "bnot\\t%V2,%0"
  [(set_attr "length" "8")])

(define_insn "xorqi3_1"
  [(set (match_operand:QI 0 "bit_operand" "=U,r")
        (xor:QI (match_operand:QI 1 "bit_operand" "%0,0")
                (match_operand:QI 2 "h8300_src_operand" "Y2,rQi")))]
  "TARGET_H8300SX || register_operand (operands[0], QImode)
   || single_one_operand (operands[2], QImode)"
  "@
   bnot\\t%V2,%R0
   xor\\t%X2,%X0"
  [(set_attr "length" "8,*")
   (set_attr "length_table" "*,logicb")
   (set_attr "cc" "none_0hit,set_znv")])

(define_expand "xorqi3"
  [(set (match_operand:QI 0 "register_operand" "")
        (xor:QI (match_operand:QI 1 "register_operand" "")
                (match_operand:QI 2 "h8300_src_operand" "")))]
  ""
  "")

(define_expand "xorhi3"
  [(set (match_operand:HI 0 "register_operand" "")
        (xor:HI (match_operand:HI 1 "register_operand" "")
                (match_operand:HI 2 "h8300_src_operand" "")))]
  ""
  "")

(define_expand "xorsi3"
  [(set (match_operand:SI 0 "register_operand" "")
        (xor:SI (match_operand:SI 1 "register_operand" "")
                (match_operand:SI 2 "h8300_src_operand" "")))]
  ""
  "")

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

;; We need a separate pattern here because machines other than the
;; original H8300 don't have to split the 16-bit operand into a pair
;; of high/low instructions, so we can accept literal addresses, that
;; have to be loaded into a register on H8300.

(define_insn "*logicalhi3_sn"
  [(set (match_operand:HI 0 "h8300_dst_operand" "=rQ")
        (match_operator:HI 3 "bit_operator"
         [(match_operand:HI 1 "h8300_dst_operand" "%0")
          (match_operand:HI 2 "h8300_src_operand" "rQi")]))]
  "(TARGET_H8300S || TARGET_H8300H) && h8300_operands_match_p (operands)"
{
  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 "*logicalsi3_sn"
  [(set (match_operand:SI 0 "h8300_dst_operand" "=rQ")
        (match_operator:SI 3 "bit_operator"
         [(match_operand:SI 1 "h8300_dst_operand" "%0")
          (match_operand:SI 2 "h8300_src_operand" "rQi")]))]
  "(TARGET_H8300S || TARGET_H8300H) && h8300_operands_match_p (operands)"
{
  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)"))])

(define_insn "*logicalhi3"
  [(set (match_operand:HI 0 "h8300_dst_operand" "=rQ")
        (match_operator:HI 3 "bit_operator"
          [(match_operand:HI 1 "h8300_dst_operand" "%0")
           (match_operand:HI 2 "h8300_src_operand" "rQi")]))]
  "h8300_operands_match_p (operands)"
{
  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 "*logicalsi3"
  [(set (match_operand:SI 0 "h8300_dst_operand" "=rQ")
        (match_operator:SI 3 "bit_operator"
         [(match_operand:SI 1 "h8300_dst_operand" "%0")
          (match_operand:SI 2 "h8300_src_operand" "rQi")]))]
  "h8300_operands_match_p (operands)"
{
  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_expand "negqi2"
  [(set (match_operand:QI 0 "register_operand" "")
        (neg:QI (match_operand:QI 1 "register_operand" "")))]
  ""
  "")

(define_insn "*negqi2"
  [(set (match_operand:QI 0 "h8300_dst_operand" "=rQ")
        (neg:QI (match_operand:QI 1 "h8300_dst_operand" "0")))]
  ""
  "neg  %X0"
  [(set_attr "length_table" "unary")
   (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_h8300hs"
  [(set (match_operand:HI 0 "h8300_dst_operand" "=rQ")
        (neg:HI (match_operand:HI 1 "h8300_dst_operand" "0")))]
  "(TARGET_H8300H || TARGET_H8300S) && h8300_operands_match_p (operands)"
  "neg.w        %T0"
  [(set_attr "length_table" "unary")
   (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_h8300hs"
  [(set (match_operand:SI 0 "h8300_dst_operand" "=rQ")
        (neg:SI (match_operand:SI 1 "h8300_dst_operand" "0")))]
  "(TARGET_H8300H || TARGET_H8300S) && h8300_operands_match_p (operands)"
  "neg.l        %S0"
  [(set_attr "length_table" "unary")
   (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 "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 "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 "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 "length" "4")])
\f
;; ----------------------------------------------------------------------
;; NOT INSTRUCTIONS
;; ----------------------------------------------------------------------

(define_expand "one_cmplqi2"
  [(set (match_operand:QI 0 "register_operand" "")
        (not:QI (match_operand:QI 1 "register_operand" "")))]
  ""
  "")

(define_insn "*one_cmplqi2"
  [(set (match_operand:QI 0 "h8300_dst_operand" "=rQ")
        (not:QI (match_operand:QI 1 "h8300_dst_operand" "0")))]
  ""
  "not  %X0"
  [(set_attr "length_table" "unary")
   (set_attr "cc" "set_znv")])

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

(define_insn "*one_cmplhi2_h8300"
  [(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 "length" "4")])

(define_insn "*one_cmplhi2_h8300hs"
  [(set (match_operand:HI 0 "h8300_dst_operand" "=rQ")
        (not:HI (match_operand:HI 1 "h8300_dst_operand" "0")))]
  "(TARGET_H8300H || TARGET_H8300S) && h8300_operands_match_p (operands)"
  "not.w        %T0"
  [(set_attr "cc" "set_znv")
   (set_attr "length_table" "unary")])

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

(define_insn "*one_cmplsi2_h8300"
  [(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 "length" "8")])

(define_insn "*one_cmplsi2_h8300hs"
  [(set (match_operand:SI 0 "h8300_dst_operand" "=rQ")
        (not:SI (match_operand:SI 1 "h8300_dst_operand" "0")))]
  "(TARGET_H8300H || TARGET_H8300S) && h8300_operands_match_p (operands)"
  "not.l        %S0"
  [(set_attr "cc" "set_znv")
   (set_attr "length_table" "unary")])
\f
;; ----------------------------------------------------------------------
;; JUMP INSTRUCTIONS
;; ----------------------------------------------------------------------

;; Conditional jump instructions

(define_expand "cbranchqi4"
  [(use (match_operator 0 "ordered_comparison_operator"
         [(match_operand:QI 1 "h8300_dst_operand" "")
          (match_operand:QI 2 "h8300_src_operand" "")]))
   (use (match_operand 3 ""))]
  ""
  {
    h8300_expand_branch (operands);
    DONE;
  })

(define_expand "cbranchhi4"
  [(use (match_operator 0 "ordered_comparison_operator"
         [(match_operand:HI 1 "h8300_dst_operand" "")
          (match_operand:HI 2 "h8300_src_operand" "")]))
   (use (match_operand 3 ""))]
  ""
  {
    /* Force operand1 into a register if we're compiling
       for the H8/300.  */
    if ((GET_CODE (operands[2]) != REG && operands[2] != const0_rtx)
        && TARGET_H8300)
      operands[2] = force_reg (HImode, operands[2]);
    h8300_expand_branch (operands); 
    DONE;
  })

(define_expand "cbranchsi4"
  [(use (match_operator 0 "ordered_comparison_operator"
         [(match_operand:SI 1 "h8300_dst_operand" "")
          (match_operand:SI 2 "h8300_src_operand" "")]))
   (use (match_operand 3 ""))]
  "TARGET_H8300H || TARGET_H8300S"
  {
    h8300_expand_branch (operands);
    DONE;
  })

(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")])

(define_insn "*brabc"
  [(set (pc)
        (if_then_else (eq (zero_extract (match_operand:QI 1 "bit_memory_operand" "WU")
                                        (const_int 1)
                                        (match_operand:QI 2 "immediate_operand" "n"))
                          (const_int 0))
                      (label_ref (match_operand 0 "" ""))
                      (pc)))]
  "TARGET_H8300SX"
{
  switch (get_attr_length (insn)
          - h8300_insn_length_from_table (insn, operands))
    {
    case 2:
      return "bra/bc    %2,%R1,%l0";
    case 4:
      return "bra/bc    %2,%R1,%l0:16";
    default:
      return "bra/bs    %2,%R1,.Lh8BR%=\;jmp    @%l0\\n.Lh8BR%=:";
    }
}
  [(set_attr "type" "bitbranch")
   (set_attr "length_table" "bitbranch")
   (set_attr "cc" "none")])

(define_insn "*brabs"
  [(set (pc)
        (if_then_else (ne (zero_extract (match_operand:QI 1 "bit_memory_operand" "WU")
                                        (const_int 1)
                                        (match_operand:QI 2 "immediate_operand" "n"))
                          (const_int 0))
                      (label_ref (match_operand 0 "" ""))
                      (pc)))]
  "TARGET_H8300SX"
{
  switch (get_attr_length (insn)
          - h8300_insn_length_from_table (insn, operands))
    {
    case 2:
      return "bra/bs    %2,%R1,%l0";
    case 4:
      return "bra/bs    %2,%R1,%l0:16";
    default:
      return "bra/bc    %2,%R1,.Lh8BR%=\;jmp    @%l0\\n.Lh8BR%=:";
    }
}
  [(set_attr "type" "bitbranch")
   (set_attr "length_table" "bitbranch")
   (set_attr "cc" "none")])

;; Unconditional and other jump instructions.

(define_insn "jump"
  [(set (pc)
        (label_ref (match_operand 0 "" "")))]
  ""
{
  if (final_sequence != 0)
    {
      if (get_attr_length (insn) == 2)
        return "bra/s   %l0";
      else
        {
          /* The branch isn't short enough to use bra/s.  Output the
             branch and delay slot in their normal order.

             If this is a backward branch, it will now be branching two
             bytes further than previously thought.  The length-based
             test for bra vs. jump is very conservative though, so the
             branch will still be within range.  */
          rtx_sequence *seq;
          int seen;

          seq = final_sequence;
          final_sequence = 0;
          final_scan_insn (seq->insn (1), asm_out_file, optimize, 1, & seen);
          final_scan_insn (seq->insn (0), asm_out_file, optimize, 1, & seen);
          seq->insn (1)->set_deleted ();
          return "";
        }
    }
  else 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 "delay_slot")
        (if_then_else (match_test "TARGET_H8300SX")
                      (const_string "jump")
                      (const_string "none")))
   (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_h8300hs_advanced"
  [(set (pc) (match_operand:SI 0 "register_operand" "r"))
   (use (label_ref (match_operand 1 "" "")))]
  "(TARGET_H8300H || TARGET_H8300S) && !TARGET_NORMAL_MODE"
  "jmp  @%0"
  [(set_attr "cc" "none")
   (set_attr "length" "2")])

(define_insn "*tablejump_h8300hs_normal"
  [(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_h8300hs_advanced"
  [(set (pc) (match_operand:SI 0 "jump_address_operand" "Vr"))]
  "(TARGET_H8300H || TARGET_H8300S) && !TARGET_NORMAL_MODE"
  "jmp @%0"
  [(set_attr "cc" "none")
   (set_attr "length" "2")])

(define_insn "*indirect_jump_h8300hs_normal"
  [(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_FLAGS (XEXP (operands[0], 0)) & SYMBOL_FLAG_FUNCVEC_FUNCTION))
    return "jsr\\t@%0:8";
  else
    return "jsr\\t%0";
}
  [(set_attr "type" "call")
   (set (attr "length")
        (if_then_else (match_operand:QI 0 "small_call_insn_operand" "")
                      (const_int 2)
                      (const_int 4)))])

;; 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_FLAGS (XEXP (operands[1], 0)) & SYMBOL_FLAG_FUNCVEC_FUNCTION))
    return "jsr\\t@%1:8";
  else
    return "jsr\\t%1";
}
  [(set_attr "type" "call")
   (set (attr "length")
        (if_then_else (match_operand:QI 0 "small_call_insn_operand" "")
                      (const_int 2)
                      (const_int 4)))])

(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" ""))]
  "TARGET_H8300"
  "")

(define_expand "push_h8300hs_advanced"
  [(set (mem:SI (pre_dec:SI (reg:SI SP_REG)))
        (match_operand:SI 0 "register_operand" ""))]
  "TARGET_H8300H && TARGET_H8300S && !TARGET_NORMAL_MODE"
  "")

(define_expand "push_h8300hs_normal"
  [(set (mem:SI (pre_dec:HI (reg:HI SP_REG)))
        (match_operand:SI 0 "register_operand" ""))]
  "TARGET_H8300H && TARGET_H8300S && TARGET_NORMAL_MODE"
  "")

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

(define_expand "pop_h8300hs_advanced"
  [(set (match_operand:SI 0 "register_operand" "")
        (mem:SI (post_inc:SI (reg:SI SP_REG))))]
  "TARGET_H8300H && TARGET_H8300S && !TARGET_NORMAL_MODE"
  "")

(define_expand "pop_h8300hs_normal"
  [(set (match_operand:SI 0 "register_operand" "")
        (mem:SI (post_inc:HI (reg:HI SP_REG))))]
  "TARGET_H8300H && TARGET_H8300S && TARGET_NORMAL_MODE"
  "")

(define_insn "ldm_h8300sx"
  [(match_parallel           0 "h8300_ldm_parallel"
    [(set (match_operand:SI 1 "register_operand" "")
          (match_operand:SI 2 "memory_operand" ""))])]
  "TARGET_H8300S"
{
  operands[3] = SET_DEST (XVECEXP (operands[0], 0,
                                   XVECLEN (operands[0], 0) - 2));
  return "ldm.l\t@er7+,%S1-%S3";
}
  [(set_attr "cc" "none")
   (set_attr "length" "4")])

(define_insn "stm_h8300sx"
  [(match_parallel           0 "h8300_stm_parallel"
    [(set (match_operand:SI 1 "memory_operand" "")
          (match_operand:SI 2 "register_operand" ""))])]
  "TARGET_H8300S"
{
  operands[3] = SET_SRC (XVECEXP (operands[0], 0,
                                  XVECLEN (operands[0], 0) - 2));
  return "stm.l\t%S2-%S3,@-er7";
}
  [(set_attr "cc" "none")
   (set_attr "length" "4")])

(define_insn "return_h8sx"
  [(match_parallel           0 "h8300_return_parallel"
    [(return)
     (set (match_operand:SI 1 "register_operand" "")
          (match_operand:SI 2 "memory_operand" ""))])]
  "TARGET_H8300SX"
{
  operands[3] = SET_DEST (XVECEXP (operands[0], 0,
                                   XVECLEN (operands[0], 0) - 2));
  if (h8300_current_function_interrupt_function_p ()
      || h8300_current_function_monitor_function_p ())
    return "rte/l\t%S1-%S3";
  else
    return "rts/l\t%S1-%S3";
}
  [(set_attr "cc" "none")
   (set_attr "can_delay" "no")
   (set_attr "length" "2")])

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

(define_insn "*return_1"
  [(return)]
  "reload_completed"
{
  if (h8300_current_function_interrupt_function_p ()
      || h8300_current_function_monitor_function_p ())
    return "rte";
  else
    return "rts";
}
  [(set_attr "cc" "none")
   (set_attr "can_delay" "no")
   (set_attr "length" "2")])

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

(define_expand "epilogue"
  [(return)]
  ""
  {
    h8300_expand_epilogue (); 
    DONE;
  })

(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 && TARGET_NORMAL_MODE)
    return "subs\\t#2,er7\;mov.l\\ter0,@-er7\;stc\\tccr,r0l\;mov.b\\tr0l,@(4,er7)\;mov.l\\t@er7+,er0\;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 && TARGET_NEXR )
    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 && TARGET_NEXR && TARGET_NORMAL_MODE)
    return "subs\\t#2,er7\;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 && TARGET_NORMAL_MODE)
    return "subs\\t#2,er7\;stc\texr,@-er7\;mov.l\\ter0,@-er7\;stc\tccr,r0l\;mov.b\tr0l,@(6,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";
  gcc_unreachable ();
}
  [(set_attr "length" "20")])
\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")])

(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" "")))]
  ""
  {
    if (TARGET_H8300SX)
      operands[1] = force_reg (QImode, operands[1]);
  })

(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")])

(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) && !TARGET_H8300SX"
  "#")

(define_split
  [(set (match_operand:SI 0 "register_operand" "")
        (zero_extend:SI (match_operand:QI 1 "general_operand_src" "")))]
  "(TARGET_H8300H || TARGET_H8300S) && !TARGET_H8300SX
    && reg_overlap_mentioned_p (operands[0], operands[1])
    && reload_completed"
  [(set (match_dup 2)
        (match_dup 1))
   (set (match_dup 3)
        (zero_extend:HI (match_dup 2)))
   (set (match_dup 0)
        (zero_extend:SI (match_dup 3)))]
  {
    operands[2] = gen_lowpart (QImode, operands[0]);
    operands[3] = gen_lowpart (HImode, 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) && !TARGET_H8300SX
    && !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_insn "*zero_extendqisi2_h8sx"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (zero_extend:SI (match_operand:QI 1 "register_operand" "0")))]
  "TARGET_H8300SX"
  "extu.l\t#2,%0"
  [(set_attr "length" "2")
   (set_attr "cc" "set_znv")])

(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")])

(define_insn "*zero_extendhisi2_h8300hs"
  [(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 "*extendqihi2_h8300"
  [(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")])

(define_insn "*extendqihi2_h8300hs"
  [(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" "")
        (sign_extend:SI (match_operand:QI 1 "register_operand" "")))]
  ""
  "")

(define_insn "*extendqisi2_h8300"
  [(set (match_operand:SI 0 "register_operand" "=r,r")
        (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")])

;; The following pattern is needed because without the pattern, the
;; combiner would split (sign_extend:SI (reg:QI)) 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) && !TARGET_H8300SX"
  "#"
  "&& 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_insn "*extendqisi2_h8sx"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (sign_extend:SI (match_operand:QI 1 "register_operand" "0")))]
  "TARGET_H8300SX"
  "exts.l\t#2,%0"
  [(set_attr "length" "2")
   (set_attr "cc" "set_znv")])

(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")])

(define_insn "*extendhisi2_h8300hs"
  [(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" "")))]
  ""
  {
    if (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" "")))]
  ""
  {
    if (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" "")))]
  ""
  {
    if (expand_a_shift (QImode, LSHIFTRT, operands)) 
    DONE;
  })

(define_insn ""
  [(set (match_operand:QI 0 "h8300_dst_operand" "=rQ")
        (match_operator:QI 3 "h8sx_unary_shift_operator"
         [(match_operand:QI 1 "h8300_dst_operand" "0")
          (match_operand:QI 2 "const_int_operand" "")]))]
  "h8300_operands_match_p (operands)"
{ 
  return output_h8sx_shift (operands, 'b', 'X'); 
}
  [(set_attr "length_table" "unary")
   (set_attr "cc" "set_znv")])

(define_insn ""
  [(set (match_operand:QI 0 "register_operand" "=r")
        (match_operator:QI 3 "h8sx_binary_shift_operator"
         [(match_operand:QI 1 "register_operand" "0")
          (match_operand:QI 2 "nonmemory_operand" "r P3>X")]))]
  ""
{
  return output_h8sx_shift (operands, 'b', 'X'); 
}
  [(set_attr "length" "4")
   (set_attr "cc" "set_znv")])

(define_insn "*shiftqi"
  [(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")
        (symbol_ref "compute_a_shift_cc (insn, operands)"))])

;; HI BIT SHIFTS

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

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

(define_insn ""
  [(set (match_operand:HI 0 "h8300_dst_operand" "=rQ")
        (match_operator:HI 3 "h8sx_unary_shift_operator"
         [(match_operand:HI 1 "h8300_dst_operand" "0")
          (match_operand:QI 2 "const_int_operand" "")]))]
  "h8300_operands_match_p (operands)"
{ 
  return output_h8sx_shift (operands, 'w', 'T'); 
}
  [(set_attr "length_table" "unary")
   (set_attr "cc" "set_znv")])

(define_insn ""
  [(set (match_operand:HI 0 "register_operand" "=r")
        (match_operator:HI 3 "h8sx_binary_shift_operator"
         [(match_operand:HI 1 "register_operand" "0")
          (match_operand:QI 2 "nonmemory_operand" "r P4>X")]))]
  ""
{
  return output_h8sx_shift (operands, 'w', 'T'); 
}
  [(set_attr "length" "4")
   (set_attr "cc" "set_znv")])

(define_insn "*shifthi"
  [(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")
        (symbol_ref "compute_a_shift_cc (insn, operands)"))])

;;  SI BIT SHIFTS

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

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

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

(define_insn ""
  [(set (match_operand:SI 0 "h8300_dst_operand" "=rQ")
        (match_operator:SI 3 "h8sx_unary_shift_operator"
         [(match_operand:SI 1 "h8300_dst_operand" "0")
          (match_operand:QI 2 "const_int_operand" "")]))]
  "h8300_operands_match_p (operands)"
{
  return output_h8sx_shift (operands, 'l', 'S'); 
}
  [(set_attr "length_table" "unary")
   (set_attr "cc" "set_znv")])

(define_insn ""
  [(set (match_operand:SI 0 "register_operand" "=r")
        (match_operator:SI 3 "h8sx_binary_shift_operator"
         [(match_operand:SI 1 "register_operand" "0")
          (match_operand:QI 2 "nonmemory_operand" "r P5>X")]))]
  ""
{ 
  return output_h8sx_shift (operands, 'l', 'S'); 
}
  [(set_attr "length" "4")
   (set_attr "cc" "set_znv")])

(define_insn "*shiftsi"
  [(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")
        (symbol_ref "compute_a_shift_cc (insn, operands)"))])

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

(define_split
  [(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" ""))]
  "epilogue_completed
   && find_regno_note (insn, REG_DEAD, REGNO (operands[1]))"
  [(set (cc0) (compare (match_dup 1) (const_int 0)))
   (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) (compare (match_dup 1) (const_int 0)))
   (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
  [(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" ""))]
  "epilogue_completed
   && !find_regno_note (insn, REG_DEAD, REGNO (operands[1]))"
  [(set (match_dup 3)
        (match_dup 1))
   (set (cc0) (compare (match_dup 3) (const_int 0)))
   (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) (compare (match_dup 3) (const_int 0)))
   (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 (operands)) 
    DONE;
  })

(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 output_a_rotate (ROTATE, operands);
}
  [(set (attr "length")
        (symbol_ref "compute_a_rotate_length (operands)"))])

(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 (operands)) 
    DONE;
  })

(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 output_a_rotate (ROTATE, operands);
}
  [(set (attr "length")
        (symbol_ref "compute_a_rotate_length (operands)"))])

(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 (operands)) 
    DONE;
  })

(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 output_a_rotate (ROTATE, operands);
}
  [(set (attr "length")
        (symbol_ref "compute_a_rotate_length (operands)"))])
\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 "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 || TARGET_H8300SX)
    && (1 << INTVAL (operands[2])) == INTVAL (operands[3])"
  "sub.w        %0,%0\;bild     %Z2,%Y1\;bst    #0,%X0"
  [(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 "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" "set_znv,set_znv")
   (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 "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" "set_znv,set_znv")
   (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 || TARGET_H8300SX"
  {
    if (TARGET_H8300SX)
      {
        if (GET_CODE (operands[1]) == CONST_INT
            && GET_CODE (operands[2]) == CONST_INT
            && INTVAL (operands[1]) <= 8
            && INTVAL (operands[2]) >= 0
            && INTVAL (operands[1]) + INTVAL (operands[2]) <= 8
            && memory_operand (operands[0], GET_MODE (operands[0])))
          {
            /* If the source operand is zero, it's better to use AND rather
               than BFST.  Likewise OR if the operand is all ones.  */
            if (GET_CODE (operands[3]) == CONST_INT)
              {
                HOST_WIDE_INT mask = (1 << INTVAL (operands[1])) - 1;
                if ((INTVAL (operands[3]) & mask) == 0)
                  FAIL;
                if ((INTVAL (operands[3]) & mask) == mask)
                  FAIL;
              }
            if (! bit_memory_operand (operands[0], GET_MODE (operands[0])))
              {
                if (!can_create_pseudo_p ())
                  FAIL;
                operands[0] =  replace_equiv_address (operands[0], force_reg (Pmode,
                                                      XEXP (operands[0], 0)));
              }
            operands[3] = gen_lowpart (QImode, operands[3]);
            if (! operands[3])
              FAIL;
            if (! register_operand (operands[3], QImode))
              {
                if (!can_create_pseudo_p ())
                  FAIL;
                operands[3] = force_reg (QImode, operands[3]);
              }
            emit_insn (gen_bfst (adjust_address (operands[0], QImode, 0),
                                                 operands[3], operands[1], operands[2]));
            DONE;
          }
        FAIL;
      }

    /* 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;

    if (GET_CODE (operands[3]) != REG)
      operands[3] = force_reg (HImode, operands[3]);
  })

(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 "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 || TARGET_H8300SX"
  {
    if (TARGET_H8300SX)
      {
        if (GET_CODE (operands[2]) == CONST_INT
            && GET_CODE (operands[3]) == CONST_INT
            && INTVAL (operands[2]) <= 8
            && INTVAL (operands[3]) >= 0
            && INTVAL (operands[2]) + INTVAL (operands[3]) <= 8
            && memory_operand (operands[1], QImode))
          {
            rtx temp;

            /* Optimize the case where we're extracting into a paradoxical
               subreg.  It's only necessary to extend to the inner reg.  */
            if (GET_CODE (operands[0]) == SUBREG
                && subreg_lowpart_p (operands[0])
                && (GET_MODE_SIZE (GET_MODE (SUBREG_REG (operands[0])))
                    < GET_MODE_SIZE (GET_MODE (operands[0])))
                && (GET_MODE_CLASS (GET_MODE (SUBREG_REG (operands[0])))
                    == MODE_INT))
              operands[0] = SUBREG_REG (operands[0]);

            if (!can_create_pseudo_p ())
              temp = gen_lowpart (QImode, operands[0]);
            else
              temp = gen_reg_rtx (QImode);
            if (! temp)
              FAIL;
            if (! bit_memory_operand (operands[1], QImode))
              {
                if (!can_create_pseudo_p ())
                  FAIL;
                operands[1] = replace_equiv_address (operands[1],
                                                     force_reg (Pmode, XEXP (operands[1], 0)));
              }
            emit_insn (gen_bfld (temp, operands[1], operands[2], operands[3]));
            convert_move (operands[0], temp, 1);
            DONE;
          }
        FAIL;
      }

    /* 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\;b%c4   #0,%R0\;bst     #0,%R0; bl1"
  [(set_attr "length" "6")])

(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\;b%c5   %Z4,%Y3\;bst    #0,%R0; bl3"
  [(set_attr "length" "6")])

(define_insn "bfld"
  [(set (match_operand:QI 0 "register_operand" "=r")
        (zero_extract:QI (match_operand:QI 1 "bit_memory_operand" "WU")
                         (match_operand:QI 2 "immediate_operand" "n")
                         (match_operand:QI 3 "immediate_operand" "n")))]
  "TARGET_H8300SX && INTVAL (operands[2]) + INTVAL (operands[3]) <= 8"
{
  operands[2] = GEN_INT ((1 << (INTVAL (operands[2]) + INTVAL (operands[3])))
                         - (1 << INTVAL (operands[3])));
  return "bfld  %2,%1,%R0";
}
  [(set_attr "cc" "none_0hit")
   (set_attr "length_table" "bitfield")])

(define_insn "bfst"
  [(set (zero_extract:QI (match_operand:QI 0 "bit_memory_operand" "+WU")
                         (match_operand:QI 2 "immediate_operand" "n")
                         (match_operand:QI 3 "immediate_operand" "n"))
        (match_operand:QI 1 "register_operand" "r"))]
  "TARGET_H8300SX && INTVAL (operands[2]) + INTVAL (operands[3]) <= 8"
{
  operands[2] = GEN_INT ((1 << (INTVAL (operands[2]) + INTVAL (operands[3])))
                         - (1 << INTVAL (operands[3])));
  return "bfst  %R1,%2,%0";
}
  [(set_attr "cc" "none_0hit")
   (set_attr "length_table" "bitfield")])

(define_expand "cstoreqi4"
  [(use (match_operator 1 "eqne_operator"
         [(match_operand:QI 2 "h8300_dst_operand" "")
          (match_operand:QI 3 "h8300_src_operand" "")]))
   (clobber (match_operand:HI 0 "register_operand"))]
  "TARGET_H8300SX"
  {
    h8300_expand_store (operands); 
    DONE;
  })

(define_expand "cstorehi4"
  [(use (match_operator 1 "eqne_operator"
         [(match_operand:HI 2 "h8300_dst_operand" "")
          (match_operand:HI 3 "h8300_src_operand" "")]))
   (clobber (match_operand:HI 0 "register_operand"))]
  "TARGET_H8300SX"
  {
    h8300_expand_store (operands); 
    DONE;
  })

(define_expand "cstoresi4"
  [(use (match_operator 1 "eqne_operator"
         [(match_operand:SI 2 "h8300_dst_operand" "")
          (match_operand:SI 3 "h8300_src_operand" "")]))
   (clobber (match_operand:HI 0 "register_operand"))]
  "TARGET_H8300SX"
  {
    h8300_expand_store (operands); 
    DONE;
  })

(define_insn "*bstzhireg"
  [(set (match_operand:HI 0 "register_operand" "=r")
        (match_operator:HI 1 "eqne_operator" [(cc0) (const_int 0)]))]
  "TARGET_H8300SX"
  "mulu.w       #0,%T0\;b%k1    .Lh8BR%=\;inc.w #1,%T0\\n.Lh8BR%=:"
  [(set_attr "cc" "clobber")])

(define_insn_and_split "*cmpstz"
  [(set (zero_extract:QI (match_operand:QI 0 "bit_memory_operand" "+WU,WU")
                         (const_int 1)
                         (match_operand:QI 1 "immediate_operand" "n,n"))
        (match_operator:QI 2 "eqne_operator"
         [(match_operand 3 "h8300_dst_operand" "r,rQ")
          (match_operand 4 "h8300_src_operand" "I,rQi")]))]
  "TARGET_H8300SX
   && (GET_MODE (operands[3]) == GET_MODE (operands[4])
       || GET_CODE (operands[4]) == CONST_INT)
   && GET_MODE_CLASS (GET_MODE (operands[3])) == MODE_INT
   && GET_MODE_SIZE (GET_MODE (operands[3])) <= 4"
  "#"
  "reload_completed"
  [(set (cc0) (match_dup 5))
   (set (zero_extract:QI (match_dup 0) (const_int 1) (match_dup 1))
        (match_op_dup:QI 2 [(cc0) (const_int 0)]))]
  {
    operands[5] = gen_rtx_COMPARE (VOIDmode, operands[3], operands[4]);
  }
  [(set_attr "cc" "set_znv,compare")])
   
(define_insn "*bstz"
  [(set (zero_extract:QI (match_operand:QI 0 "bit_memory_operand" "+WU")
                         (const_int 1)
                         (match_operand:QI 1 "immediate_operand" "n"))
        (eq:QI (cc0) (const_int 0)))]
  "TARGET_H8300SX && reload_completed"
  "bstz %1,%0"
  [(set_attr "cc" "none_0hit")
   (set_attr "length_table" "unary")])

(define_insn "*bistz"
  [(set (zero_extract:QI (match_operand:QI 0 "bit_memory_operand" "+WU")
                         (const_int 1)
                         (match_operand:QI 1 "immediate_operand" "n"))
        (ne:QI (cc0) (const_int 0)))]
  "TARGET_H8300SX && reload_completed"
  "bistz        %1,%0"
  [(set_attr "cc" "none_0hit")
   (set_attr "length_table" "unary")])

(define_insn_and_split "*cmpcondbset"
  [(set (match_operand:QI 0 "nonimmediate_operand" "=WU,WU")
        (if_then_else:QI (match_operator 1 "eqne_operator"
                          [(match_operand 2 "h8300_dst_operand" "r,rQ")
                           (match_operand 3 "h8300_src_operand" "I,rQi")])
                         (ior:QI (match_operand:QI 4 "bit_memory_operand" "0,0")
                                 (match_operand:QI 5 "single_one_operand" "n,n"))
                         (match_dup 4)))]
  "TARGET_H8300SX"
  "#"
  "reload_completed"
  [(set (cc0) (match_dup 6))
   (set (match_dup 0)
        (if_then_else:QI (match_op_dup 1 [(cc0) (const_int 0)])
                         (ior:QI (match_dup 4) (match_dup 5))
                         (match_dup 4)))]
  {
    operands[6] = gen_rtx_COMPARE (VOIDmode, operands[2], operands[3]);
  }
  [(set_attr "cc" "set_znv,compare")])
   
(define_insn "*condbset"
  [(set (match_operand:QI 0 "bit_memory_operand" "=WU")
        (if_then_else:QI (match_operator:QI 2 "eqne_operator"
                          [(cc0) (const_int 0)])
                         (ior:QI (match_operand:QI 3 "bit_memory_operand" "0")
                                 (match_operand:QI 1 "single_one_operand" "n"))
                         (match_dup 3)))]
  "TARGET_H8300SX && reload_completed"
  "bset/%j2\t%V1,%0"
  [(set_attr "cc" "none_0hit")
   (set_attr "length_table" "logicb")])

(define_insn_and_split "*cmpcondbclr"
  [(set (match_operand:QI 0 "nonimmediate_operand" "=WU,WU")
        (if_then_else:QI (match_operator 1 "eqne_operator"
                          [(match_operand 2 "h8300_dst_operand" "r,rQ")
                           (match_operand 3 "h8300_src_operand" "I,rQi")])
                         (and:QI (match_operand:QI 4 "bit_memory_operand" "0,0")
                                 (match_operand:QI 5 "single_zero_operand" "n,n"))
                         (match_dup 4)))]
  "TARGET_H8300SX"
  "#"
  "reload_completed"
  [(set (cc0) (match_dup 6))
   (set (match_dup 0)
        (if_then_else:QI (match_op_dup 1 [(cc0) (const_int 0)])
                         (and:QI (match_dup 4) (match_dup 5))
                         (match_dup 4)))]
  {
    operands[6] = gen_rtx_COMPARE (VOIDmode, operands[2], operands[3]);
  }
  [(set_attr "cc" "set_znv,compare")])
   
(define_insn "*condbclr"
  [(set (match_operand:QI 0 "bit_memory_operand" "=WU")
        (if_then_else:QI (match_operator:QI 2 "eqne_operator"
                          [(cc0) (const_int 0)])
                         (and:QI (match_operand:QI 3 "bit_memory_operand" "0")
                                 (match_operand:QI 1 "single_zero_operand" "n"))
                         (match_dup 3)))]
  "TARGET_H8300SX && reload_completed"
  "bclr/%j2\t%W1,%0"
  [(set_attr "cc" "none_0hit")
   (set_attr "length_table" "logicb")])

(define_insn_and_split "*cmpcondbsetreg"
  [(set (match_operand:QI 0 "nonimmediate_operand" "=WU,WU")
        (if_then_else:QI (match_operator 1 "eqne_operator"
                          [(match_operand 2 "h8300_dst_operand" "r,rQ")
                           (match_operand 3 "h8300_src_operand" "I,rQi")])
                         (ior:QI (match_operand:QI 4 "bit_memory_operand" "0,0")
                                 (ashift:QI (const_int 1)
                                            (match_operand:QI 5 "register_operand" "r,r")))
                         (match_dup 4)))]
  "TARGET_H8300SX"
  "#"
  "reload_completed"
  [(set (cc0) (match_dup 6))
   (set (match_dup 0)
        (if_then_else:QI (match_op_dup 1 [(cc0) (const_int 0)])
                         (ior:QI (match_dup 4)
                                 (ashift:QI (const_int 1)
                                            (match_operand:QI 5 "register_operand" "r,r")))
                         (match_dup 4)))]
  {
    operands[6] = gen_rtx_COMPARE (VOIDmode, operands[2], operands[3]);
  }
  [(set_attr "cc" "set_znv,compare")])
   
(define_insn "*condbsetreg"
  [(set (match_operand:QI 0 "bit_memory_operand" "=WU")
        (if_then_else:QI (match_operator:QI 2 "eqne_operator"
                          [(cc0) (const_int 0)])
                         (ior:QI (match_operand:QI 3 "bit_memory_operand" "0")
                                 (ashift:QI (const_int 1)
                                            (match_operand:QI 1 "register_operand" "r")))
                         (match_dup 3)))]
  "TARGET_H8300SX && reload_completed"
  "bset/%j2\t%R1,%0"
  [(set_attr "cc" "none_0hit")
   (set_attr "length_table" "logicb")])

(define_insn_and_split "*cmpcondbclrreg"
  [(set (match_operand:QI 0 "nonimmediate_operand" "=WU,WU")
        (if_then_else:QI (match_operator 1 "eqne_operator"
                          [(match_operand 2 "h8300_dst_operand" "r,rQ")
                           (match_operand 3 "h8300_src_operand" "I,rQi")])
                         (and:QI (match_operand:QI 4 "bit_memory_operand" "0,0")
                                 (ashift:QI (const_int 1)
                                            (match_operand:QI 5 "register_operand" "r,r")))
                         (match_dup 4)))]
  "TARGET_H8300SX"
  "#"
  "reload_completed"
  [(set (cc0) (match_dup 6))
   (set (match_dup 0)
        (if_then_else:QI (match_op_dup 1 [(cc0) (const_int 0)])
                         (and:QI (match_dup 4)
                                 (ashift:QI (const_int 1)
                                            (match_operand:QI 5 "register_operand" "r,r")))
                         (match_dup 4)))]
  {
    operands[6] = gen_rtx_COMPARE (VOIDmode, operands[2], operands[3]);
  }
  [(set_attr "cc" "set_znv,compare")])
   
(define_insn "*condbclrreg"
  [(set (match_operand:QI 0 "bit_memory_operand" "=WU")
        (if_then_else:QI (match_operator:QI 2 "eqne_operator"
                          [(cc0) (const_int 0)])
                         (and:QI (match_operand:QI 3 "bit_memory_operand" "0")
                                 (ashift:QI (const_int 1)
                                            (match_operand:QI 1 "register_operand" "r")))
                         (match_dup 3)))]
  "TARGET_H8300SX && reload_completed"
  "bclr/%j2\t%R1,%0"
  [(set_attr "cc" "none_0hit")
   (set_attr "length_table" "logicb")])

\f
;; -----------------------------------------------------------------
;; COMBINE PATTERNS
;; -----------------------------------------------------------------

;; insv:SI

(define_insn "*insv_si_1_n"
  [(set (zero_extract:SI (match_operand:SI 0 "register_operand" "+r")
                         (const_int 1)
                         (match_operand:SI 1 "const_int_operand" "n"))
        (match_operand:SI 2 "register_operand" "r"))]
  "(TARGET_H8300H || TARGET_H8300S) && INTVAL (operands[1]) < 16"
  "bld\\t#0,%w2\;bst\\t%Z1,%Y0"
  [(set_attr "length" "4")])

(define_insn "*insv_si_1_n_lshiftrt"
  [(set (zero_extract:SI (match_operand:SI 0 "register_operand" "+r")
                         (const_int 1)
                         (match_operand:SI 1 "const_int_operand" "n"))
        (lshiftrt:SI (match_operand:SI 2 "register_operand" "r")
                     (match_operand:SI 3 "const_int_operand" "n")))]
  "(TARGET_H8300H || TARGET_H8300S)
    && INTVAL (operands[1]) < 16
    && INTVAL (operands[3]) < 16"
  "bld\\t%Z3,%Y2\;bst\\t%Z1,%Y0"
  [(set_attr "length" "4")])

(define_insn "*insv_si_1_n_lshiftrt_16"
  [(set (zero_extract:SI (match_operand:SI 0 "register_operand" "+r")
                         (const_int 1)
                         (match_operand:SI 1 "const_int_operand" "n"))
        (lshiftrt:SI (match_operand:SI 2 "register_operand" "r")
                     (const_int 16)))]
  "(TARGET_H8300H || TARGET_H8300S) && INTVAL (operands[1]) < 16"
  "rotr.w\\t%e2\;rotl.w\\t%e2\;bst\\t%Z1,%Y0"
  [(set_attr "length" "6")])

(define_insn "*insv_si_8_8"
  [(set (zero_extract:SI (match_operand:SI 0 "register_operand" "+r")
                         (const_int 8)
                         (const_int 8))
        (match_operand:SI 1 "register_operand" "r"))]
  "TARGET_H8300H || TARGET_H8300S"
  "mov.b\\t%w1,%x0"
  [(set_attr "length" "2")])

(define_insn "*insv_si_8_8_lshiftrt_8"
  [(set (zero_extract:SI (match_operand:SI 0 "register_operand" "+r")
                         (const_int 8)
                         (const_int 8))
        (lshiftrt:SI (match_operand:SI 1 "register_operand" "r")
                     (const_int 8)))]
  "TARGET_H8300H || TARGET_H8300S"
  "mov.b\\t%x1,%x0"
  [(set_attr "length" "2")])

;; 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
    && UINTVAL (operands[3]) == ((HOST_WIDE_INT_M1U << 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")])

(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")])

(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"
  [(set_attr "length" "6")])

(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) (compare (zero_extract:SI (match_dup 1)
                                        (const_int 1)
                                        (const_int 0))
                       (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) (compare (zero_extract:SI (match_dup 1)
                                        (const_int 1)
                                        (const_int 0))
                       (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 ();
  })

;; [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 "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 "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 "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 "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 "length" "2")])

;; 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 "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 "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 "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 "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 "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")])

(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")])

(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_ashift"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (ior:SI (and:SI (ashift:SI (match_operand:SI 1 "register_operand" "r")
                                   (match_operand:SI 2 "const_int_operand" "n"))
                        (match_operand:SI 3 "single_one_operand" "n"))
                (match_operand:SI 4 "register_operand" "0")))]
  "(TARGET_H8300H || TARGET_H8300S)
    && (INTVAL (operands[3]) & ~0xffff) == 0"
{
  rtx srcpos = GEN_INT (exact_log2 (INTVAL (operands[3]))
                        - INTVAL (operands[2]));
  rtx dstpos = GEN_INT (exact_log2 (INTVAL (operands[3])));
  operands[2] = srcpos;
  operands[3] = dstpos;
  return "bld\\t%Z2,%Y1\;bor\\t%Z3,%Y0\;bst\\t%Z3,%Y0";
}
  [(set_attr "length" "6")])

(define_insn "*iorsi3_and_lshiftrt"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (ior:SI (and:SI (lshiftrt:SI (match_operand:SI 1 "register_operand" "r")
                                     (match_operand:SI 2 "const_int_operand" "n"))
                        (match_operand:SI 3 "single_one_operand" "n"))
                (match_operand:SI 4 "register_operand" "0")))]
  "(TARGET_H8300H || TARGET_H8300S)
    && ((INTVAL (operands[3]) << INTVAL (operands[2])) & ~0xffff) == 0"
{
  rtx srcpos = GEN_INT (exact_log2 (INTVAL (operands[3]))
                        + INTVAL (operands[2]));
  rtx dstpos = GEN_INT (exact_log2 (INTVAL (operands[3])));
  operands[2] = srcpos;
  operands[3] = dstpos;
  return "bld\\t%Z2,%Y1\;bor\\t%Z3,%Y0\;bst\\t%Z3,%Y0";
}
  [(set_attr "length" "6")])

(define_insn "*iorsi3_zero_extract"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (ior:SI (zero_extract:SI (match_operand:SI 1 "register_operand" "r")
                                 (const_int 1)
                                 (match_operand:SI 2 "const_int_operand" "n"))
                (match_operand:SI 3 "register_operand" "0")))]
  "(TARGET_H8300H || TARGET_H8300S) && INTVAL (operands[2]) < 16"
  "bld\\t%Z2,%Y1\;bor\\t#0,%w0\;bst\\t#0,%w0"
  [(set_attr "length" "6")])

(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")])

(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")])

;; 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
  [(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)
    && epilogue_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
  [(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)
    && epilogue_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")])

(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
  [(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)
    && epilogue_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
  [(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)
    && epilogue_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) (compare (match_dup 0)
                       (const_int 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) (compare (match_dup 0)
                       (const_int 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 && !TARGET_NORMAL_MODE && REGNO (operands[0]) != SP_REG"
  [(set (mem:SI (pre_dec:SI (reg:SI SP_REG)))
        (match_dup 0))]
  { 
    operands[0] = gen_rtx_REG (SImode, REGNO (operands[0]));
  })

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

(define_peephole2
  [(parallel [(set (reg:HI SP_REG)
                   (plus:HI (reg:HI SP_REG) (const_int -4)))
              (set (mem:HI (plus:HI (reg:HI SP_REG) (const_int -2)))
                   (match_operand:HI 0 "register_operand" ""))])]
  "TARGET_H8300S && TARGET_NORMAL_MODE && REGNO (operands[0]) != SP_REG"
  [(set (mem:SI (pre_dec:HI (reg:HI 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 && !TARGET_NORMAL_MODE
   && (REGNO_REG_CLASS (REGNO (operands[3])) == GENERAL_REGS
       && REGNO (operands[1]) == REGNO (operands[0]) + 1
       && REGNO (operands[2]) == REGNO (operands[0]) + 2
       && REGNO (operands[3]) == REGNO (operands[0]) + 3
       && (TARGET_H8300SX || REGNO (operands[0]) == 0))"
  [(parallel [(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))
              (set (reg:SI SP_REG)
                   (plus:SI (reg:SI SP_REG)
                            (const_int -16)))])]
  "")

(define_peephole2
  [(set (mem:SI (pre_dec:HI (reg:HI SP_REG)))
        (match_operand:SI 0 "register_operand" ""))
   (set (mem:SI (pre_dec:HI (reg:HI SP_REG)))
        (match_operand:SI 1 "register_operand" ""))
   (set (mem:SI (pre_dec:HI (reg:HI SP_REG)))
        (match_operand:SI 2 "register_operand" ""))
   (set (mem:SI (pre_dec:HI (reg:HI SP_REG)))
        (match_operand:SI 3 "register_operand" ""))]
  "TARGET_H8300S && TARGET_NORMAL_MODE
   && (REGNO_REG_CLASS (REGNO (operands[3])) == GENERAL_REGS
       && REGNO (operands[1]) == REGNO (operands[0]) + 1
       && REGNO (operands[2]) == REGNO (operands[0]) + 2
       && REGNO (operands[3]) == REGNO (operands[0]) + 3
       && (TARGET_H8300SX || REGNO (operands[0]) == 0))"
  [(parallel [(set (mem:SI (plus:HI (reg:HI SP_REG) (const_int -4)))
                   (match_dup 0))
              (set (mem:SI (plus:HI (reg:HI SP_REG) (const_int -8)))
                   (match_dup 1))
              (set (mem:SI (plus:HI (reg:HI SP_REG) (const_int -12)))
                   (match_dup 2))
              (set (mem:SI (plus:HI (reg:HI SP_REG) (const_int -16)))
                   (match_dup 3))
              (set (reg:HI SP_REG)
                   (plus:HI (reg:HI SP_REG)
                            (const_int -16)))])]
  "")

;; 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 && !TARGET_NORMAL_MODE
   && (REGNO_REG_CLASS (REGNO (operands[2])) == GENERAL_REGS
       && REGNO (operands[1]) == REGNO (operands[0]) + 1
       && REGNO (operands[2]) == REGNO (operands[0]) + 2
       && (TARGET_H8300SX || (REGNO (operands[0]) & 3) == 0))"
  [(parallel [(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 (reg:SI SP_REG)
                   (plus:SI (reg:SI SP_REG)
                            (const_int -12)))])]
  "")

(define_peephole2
  [(set (mem:SI (pre_dec:HI (reg:HI SP_REG)))
        (match_operand:SI 0 "register_operand" ""))
   (set (mem:SI (pre_dec:HI (reg:HI SP_REG)))
        (match_operand:SI 1 "register_operand" ""))
   (set (mem:SI (pre_dec:HI (reg:HI SP_REG)))
        (match_operand:SI 2 "register_operand" ""))]
  "TARGET_H8300S && TARGET_NORMAL_MODE
   && (REGNO_REG_CLASS (REGNO (operands[2])) == GENERAL_REGS
       && REGNO (operands[1]) == REGNO (operands[0]) + 1
       && REGNO (operands[2]) == REGNO (operands[0]) + 2
       && (TARGET_H8300SX || (REGNO (operands[0]) & 3) == 0))"
  [(parallel [(set (mem:SI (plus:HI (reg:HI SP_REG) (const_int -4)))
                   (match_dup 0))
              (set (mem:SI (plus:HI (reg:HI SP_REG) (const_int -8)))
                   (match_dup 1))
              (set (mem:SI (plus:HI (reg:HI SP_REG) (const_int -12)))
                   (match_dup 2))
              (set (reg:HI SP_REG)
                   (plus:HI (reg:HI SP_REG)
                            (const_int -12)))])]
  "")

;; 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 && !TARGET_NORMAL_MODE
   && (REGNO_REG_CLASS (REGNO (operands[1])) == GENERAL_REGS
       && REGNO (operands[1]) == REGNO (operands[0]) + 1
       && (TARGET_H8300SX || (REGNO (operands[0]) & 1) == 0))"
  [(parallel [(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 (reg:SI SP_REG)
                   (plus:SI (reg:SI SP_REG)
                            (const_int -8)))])]
  "")

(define_peephole2
  [(set (mem:SI (pre_dec:HI (reg:HI SP_REG)))
        (match_operand:SI 0 "register_operand" ""))
   (set (mem:SI (pre_dec:HI (reg:HI SP_REG)))
        (match_operand:SI 1 "register_operand" ""))]
  "TARGET_H8300S && TARGET_NORMAL_MODE
   && (REGNO_REG_CLASS (REGNO (operands[1])) == GENERAL_REGS
       && REGNO (operands[1]) == REGNO (operands[0]) + 1
       && (TARGET_H8300SX || (REGNO (operands[0]) & 1) == 0))"
  [(parallel [(set (mem:SI (plus:HI (reg:HI SP_REG) (const_int -4)))
                   (match_dup 0))
              (set (mem:SI (plus:HI (reg:HI SP_REG) (const_int -8)))
                   (match_dup 1))
              (set (reg:HI SP_REG)
                   (plus:HI (reg:HI SP_REG)
                            (const_int -8)))])]
  "")

;; 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])
   && (satisfies_constraint_J (operands[1])
       || satisfies_constraint_L (operands[1])
       || satisfies_constraint_N (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])
    && (satisfies_constraint_L (operands[1])
        || satisfies_constraint_N (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])
    && !satisfies_constraint_L (operands[2])
    && !satisfies_constraint_N (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) (compare (match_dup 0)
                       (const_int 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) (compare (match_dup 0)
                       (const_int 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) (compare (match_dup 0)
                       (const_int 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) (compare (match_dup 0)
                       (const_int 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)
                   (compare (zero_extract:SI (match_operand:QI 0 "register_operand" "")
                                             (const_int 1)
                                             (const_int 7))
                            (const_int 0)))
              (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) (compare (match_dup 0)
                       (const_int 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));
  })

;; The next three peephole2's will try to transform
;;
;;   mov.b A,r0l    (or mov.l A,er0)
;;   and.l #CST,er0
;;
;; into
;;
;;   sub.l er0
;;   mov.b A,r0l
;;   and.b #CST,r0l (if CST is not 255)

(define_peephole2
  [(set (match_operand:QI 0 "register_operand" "")
        (match_operand:QI 1 "general_operand" ""))
   (set (match_operand:SI 2 "register_operand" "")
        (and:SI (match_dup 2)
                (const_int 255)))]
  "(TARGET_H8300H || TARGET_H8300S)
    && !reg_overlap_mentioned_p (operands[2], operands[1])
    && REGNO (operands[0]) == REGNO (operands[2])"
  [(set (match_dup 2)
        (const_int 0))
   (set (strict_low_part (match_dup 0))
        (match_dup 1))]
  "")

(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 && !offsettable_memref_p (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 0 "register_operand" "")
        (match_operand 1 "general_operand" ""))
   (set (match_operand:SI 2 "register_operand" "")
        (and:SI (match_dup 2)
                (match_operand:SI 3 "const_int_qi_operand" "")))]
  "(TARGET_H8300H || TARGET_H8300S)
    && (GET_MODE (operands[0]) == QImode
        || GET_MODE (operands[0]) == HImode
        || GET_MODE (operands[0]) == SImode)
    && GET_MODE (operands[0]) == GET_MODE (operands[1])
    && REGNO (operands[0]) == REGNO (operands[2])
    && !reg_overlap_mentioned_p (operands[2], operands[1])
    && !(GET_MODE (operands[1]) != QImode
         && GET_CODE (operands[1]) == MEM
         && !offsettable_memref_p (operands[1]))
    && !(GET_MODE (operands[1]) != QImode
         && GET_CODE (operands[1]) == MEM
         && MEM_VOLATILE_P (operands[1]))"
  [(set (match_dup 2)
        (const_int 0))
   (set (strict_low_part (match_dup 4))
        (match_dup 5))
   (set (match_dup 2)
        (and:SI (match_dup 2)
                (match_dup 6)))]
  {
    operands[4] = gen_lowpart (QImode, operands[0]);
    operands[5] = gen_lowpart (QImode, operands[1]);
    operands[6] = GEN_INT (~0xff | INTVAL (operands[3]));
  })

(define_peephole2
  [(set (match_operand:SI 0 "register_operand" "")
        (match_operand:SI 1 "register_operand" ""))
   (set (match_dup 0)
        (and:SI (match_dup 0)
                (const_int 65280)))]
  "(TARGET_H8300H || TARGET_H8300S)
   && !reg_overlap_mentioned_p (operands[0], operands[1])"
  [(set (match_dup 0)
        (const_int 0))
   (set (zero_extract:SI (match_dup 0)
                         (const_int 8)
                         (const_int 8))
        (lshiftrt:SI (match_dup 1)
                     (const_int 8)))]
  "")

;; If a load of mem:SI is followed by an AND that turns off the upper
;; half, then we can load mem:HI instead.

(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)
    && !MEM_VOLATILE_P (operands[1])
    && offsettable_memref_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]);
  })

;; Convert a memory comparison to a move if there is a scratch register.

(define_peephole2
  [(match_scratch:QI 1 "r")
   (set (cc0)
        (compare (match_operand:QI 0 "memory_operand" "")
                 (const_int 0)))]
  ""
  [(set (match_dup 1)
        (match_dup 0))
   (set (cc0) (compare (match_dup 1)
                       (const_int 0)))]
  "")

(define_peephole2
  [(match_scratch:HI 1 "r")
   (set (cc0)
        (compare (match_operand:HI 0 "memory_operand" "")
                 (const_int 0)))]
  "TARGET_H8300H || TARGET_H8300S"
  [(set (match_dup 1)
        (match_dup 0))
   (set (cc0) (compare (match_dup 1)
                       (const_int 0)))]
  "")

(define_peephole2
  [(match_scratch:SI 1 "r")
   (set (cc0)
        (compare (match_operand:SI 0 "memory_operand" "")
                 (const_int 0)))]
  "TARGET_H8300H || TARGET_H8300S"
  [(set (match_dup 1)
        (match_dup 0))
   (set (cc0) (compare (match_dup 1)
                       (const_int 0)))]
  "")


;; (compare (reg:HI) (const_int)) takes 4 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
;; --------------------------------------------------------
;; 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     1                       ge/lt shar.l
;; dead     3 (H8S)                 ge/lt shar.l
;;
;; dead     1                       geu/ltu shar.l
;; dead     3 (H8S)                 geu/ltu shar.l
;;
;; ----   255                       ge/lt mov.b
;;
;; ----   255                       geu/ltu mov.b

;; Transform
;;
;;      cmp.w   #1,r0
;;      bne     .L1
;;
;; into
;;
;;      dec.w   #1,r0
;;      bne     .L1

(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)
    && INTVAL (operands[1]) != 0
    && peep2_reg_dead_p (1, operands[0])"
  [(set (match_dup 0)
        (unspec:HI [(match_dup 0)
                    (match_dup 4)]
                   UNSPEC_INCDEC))
   (set (cc0) (compare (match_dup 0)
                       (const_int 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]));
  })

;; Transform
;;
;;      cmp.w   #1,r0
;;      bgt     .L1
;;
;; into
;;
;;      shar.w  r0
;;      bgt     .L1

(define_peephole2
  [(set (cc0)
        (compare (match_operand:HI 0 "register_operand" "")
                 (match_operand:HI 1 "const_int_operand" "")))
   (set (pc)
        (if_then_else (match_operator 2 "gtle_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
        || (TARGET_H8300S && INTVAL (operands[1]) == 3))"
  [(parallel [(set (match_dup 0)
                   (ashiftrt:HI (match_dup 0)
                                (match_dup 4)))
              (clobber (scratch:QI))])
   (set (cc0) (compare (match_dup 0)
                       (const_int 0)))
   (set (pc)
        (if_then_else (match_dup 2)
                      (label_ref (match_dup 3))
                      (pc)))]
  {
    operands[4] = GEN_INT (exact_log2 (INTVAL (operands[1]) + 1));
  })

;; Transform
;;
;;      cmp.w   #1,r0
;;      bhi     .L1
;;
;; into
;;
;;      shar.w  r0
;;      bne     .L1

(define_peephole2
  [(set (cc0)
        (compare (match_operand:HI 0 "register_operand" "")
                 (match_operand:HI 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
        || (TARGET_H8300S && INTVAL (operands[1]) == 3))"
  [(parallel [(set (match_dup 0)
                   (ashiftrt:HI (match_dup 0)
                                (match_dup 4)))
              (clobber (scratch:QI))])
   (set (cc0) (compare (match_dup 0)
                       (const_int 0)))
   (set (pc)
        (if_then_else (match_dup 5)
                      (label_ref (match_dup 3))
                      (pc)))]
  {
    operands[4] = GEN_INT (exact_log2 (INTVAL (operands[1]) + 1));
    operands[5] = gen_rtx_fmt_ee (GET_CODE (operands[2]) == GTU ? NE : EQ,
                                  VOIDmode, cc0_rtx, const0_rtx);
  })

;; Transform
;;
;;      cmp.w   #255,r0
;;      bgt     .L1
;;
;; into
;;
;;      mov.b   r0h,r0h
;;      bgt     .L1

(define_peephole2
  [(set (cc0)
        (compare (match_operand:HI 0 "register_operand" "")
                 (const_int 255)))
   (set (pc)
        (if_then_else (match_operator 1 "gtle_operator"
                       [(cc0) (const_int 0)])
                      (label_ref (match_operand 2 "" ""))
                      (pc)))]
  "TARGET_H8300H || TARGET_H8300S"
  [(set (cc0) (compare (and:HI (match_dup 0)
                               (const_int -256))
                       (const_int 0)))
   (set (pc)
        (if_then_else (match_dup 1)
                      (label_ref (match_dup 2))
                      (pc)))]
  "")

;; Transform
;;
;;      cmp.w   #255,r0
;;      bhi     .L1
;;
;; into
;;
;;      mov.b   r0h,r0h
;;      bne     .L1

(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) (compare (and:HI (match_dup 0)
                               (const_int -256))
                       (const_int 0)))
   (set (pc)
        (if_then_else (match_dup 3)
                      (label_ref (match_dup 2))
                      (pc)))]
  {
    operands[3] = gen_rtx_fmt_ee (GET_CODE (operands[1]) == GTU ? NE : EQ,
                                  VOIDmode, cc0_rtx, const0_rtx);
  })

;; (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   dec.w and test
;; dead  131072                     eq/ne   dec.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 0x40000000 (H8S)            eq/ne   rotl.l and dec.l
;; dead 0x80000000                  eq/ne   rotl.l and dec.l
;;
;; live     1                       ge/lt copy and shar.l
;; live     3 (H8S)                 ge/lt copy and shar.l
;;
;; live     1                       geu/ltu copy and shar.l
;; live     3 (H8S)                 geu/ltu copy and shar.l
;;
;; dead     1                       ge/lt shar.l
;; dead     3 (H8S)                 ge/lt shar.l
;;
;; dead     1                       geu/ltu shar.l
;; dead     3 (H8S)                 geu/ltu shar.l
;;
;; dead     3 (H8/300H)             ge/lt and.b and test
;; dead     7                       ge/lt and.b and test
;; dead    15                       ge/lt and.b and test
;; dead    31                       ge/lt and.b and test
;; dead    63                       ge/lt and.b and test
;; dead   127                       ge/lt and.b and test
;; dead   255                       ge/lt and.b and test
;;
;; dead     3 (H8/300H)             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
;;
;; ---- 65535                       ge/lt mov.w
;;
;; ---- 65535                       geu/ltu mov.w

;; Transform
;;
;;      cmp.l   #1,er0
;;      beq     .L1
;;
;; into
;;
;;      dec.l   #1,er0
;;      beq     .L1

(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)
    && INTVAL (operands[1]) != 0
    && peep2_reg_dead_p (1, operands[0])"
  [(set (match_dup 0)
        (unspec:SI [(match_dup 0)
                    (match_dup 4)]
                   UNSPEC_INCDEC))
   (set (cc0) (compare (match_dup 0)
                       (const_int 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]));
  })

;; Transform
;;
;;      cmp.l   #65536,er0
;;      beq     .L1
;;
;; into
;;
;;      dec.l   #1,e0
;;      beq     .L1

(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) (compare (match_dup 0)
                       (const_int 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]));
  })

;; Transform
;;
;;      cmp.l   #100,er0
;;      beq     .L1
;;
;; into
;;
;;      xor.b   #100,er0
;;      mov.l   er0,er0
;;      beq     .L1

(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]) != 0
    && INTVAL (operands[1]) != 1
    && INTVAL (operands[1]) != 2"
  [(set (match_dup 0)
        (xor:SI (match_dup 0)
                (match_dup 1)))
   (set (cc0) (compare (match_dup 0)
                       (const_int 0)))
   (set (pc)
        (if_then_else (match_op_dup 3 [(cc0) (const_int 0)])
                      (label_ref (match_dup 2))
                      (pc)))]
  "")

;; Transform
;;
;;      cmp.l   #-100,er0
;;      beq     .L1
;;
;; into
;;
;;      xor.b   #99,er0
;;      not.l   er0
;;      beq     .L1

(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) (compare (match_dup 0)
                       (const_int 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
;;
;;      cmp.l   #-2147483648,er0
;;      beq     .L1
;;
;; into
;;
;;      rotl.l  er0
;;      dec.l   #1,er0
;;      beq     .L1

(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]) == -2147483647 - 1
        || (TARGET_H8300S && INTVAL (operands[1]) == 1073741824))"
  [(set (match_dup 0)
        (rotate:SI (match_dup 0)
                   (match_dup 4)))
   (set (match_dup 0)
        (unspec:SI [(match_dup 0)
                    (const_int -1)]
                   UNSPEC_INCDEC))
   (set (cc0) (compare (match_dup 0)
                       (const_int 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]) == -2147483647 - 1 ? 1 : 2);
  })

;; Transform
;;
;;      cmp.l   #1,er0
;;      bgt     .L1
;;
;; into
;;
;;      mov.l   er0,er1
;;      shar.l  er1
;;      bgt     .L1

;; We avoid this transformation if we see more than one copy of the
;; same compare insn immediately before this one.

(define_peephole2
  [(match_scratch:SI 4 "r")
   (set (cc0)
        (compare (match_operand:SI 0 "register_operand" "")
                 (match_operand:SI 1 "const_int_operand" "")))
   (set (pc)
        (if_then_else (match_operator 2 "gtle_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
        || (TARGET_H8300S && INTVAL (operands[1]) == 3))
    && !same_cmp_preceding_p (insn)"
  [(set (match_dup 4)
        (match_dup 0))
   (parallel [(set (match_dup 4)
                   (ashiftrt:SI (match_dup 4)
                                (match_dup 5)))
              (clobber (scratch:QI))])
   (set (cc0) (compare (match_dup 4)
                       (const_int 0)))
   (set (pc)
        (if_then_else (match_dup 2)
                      (label_ref (match_dup 3))
                      (pc)))]
  {
    operands[5] = GEN_INT (exact_log2 (INTVAL (operands[1]) + 1));
  })

;; Transform
;;
;;      cmp.l   #1,er0
;;      bhi     .L1
;;
;; into
;;
;;      mov.l   er0,er1
;;      shar.l  er1
;;      bne     .L1

;; We avoid this transformation if we see more than one copy of the
;; same compare insn immediately before this one.

(define_peephole2
  [(match_scratch:SI 4 "r")
   (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
        || (TARGET_H8300S && INTVAL (operands[1]) == 3))
    && !same_cmp_preceding_p (insn)"
  [(set (match_dup 4)
        (match_dup 0))
   (parallel [(set (match_dup 4)
                   (ashiftrt:SI (match_dup 4)
                                (match_dup 5)))
              (clobber (scratch:QI))])
   (set (cc0) (compare (match_dup 4)
                       (const_int 0)))
   (set (pc)
        (if_then_else (match_dup 6)
                      (label_ref (match_dup 3))
                      (pc)))]
  {
    operands[5] = GEN_INT (exact_log2 (INTVAL (operands[1]) + 1));
    operands[6] = gen_rtx_fmt_ee (GET_CODE (operands[2]) == GTU ? NE : EQ,
                                  VOIDmode, cc0_rtx, const0_rtx);
  })

;; Transform
;;
;;      cmp.l   #1,er0
;;      bgt     .L1
;;
;; into
;;
;;      shar.l  er0
;;      bgt     .L1

(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 "gtle_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
        || (TARGET_H8300S && INTVAL (operands[1]) == 3))"
  [(parallel [(set (match_dup 0)
                   (ashiftrt:SI (match_dup 0)
                                (match_dup 4)))
              (clobber (scratch:QI))])
   (set (cc0) (compare (match_dup 0)
                       (const_int 0)))
   (set (pc)
        (if_then_else (match_dup 2)
                      (label_ref (match_dup 3))
                      (pc)))]
  {
    operands[4] = GEN_INT (exact_log2 (INTVAL (operands[1]) + 1));
  })

;; Transform
;;
;;      cmp.l   #1,er0
;;      bhi     .L1
;;
;; into
;;
;;      shar.l  er0
;;      bne     .L1

(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
        || (TARGET_H8300S && INTVAL (operands[1]) == 3))"
  [(parallel [(set (match_dup 0)
                   (ashiftrt:SI (match_dup 0)
                                (match_dup 4)))
              (clobber (scratch:QI))])
   (set (cc0) (compare (match_dup 0)
                       (const_int 0)))
   (set (pc)
        (if_then_else (match_dup 5)
                      (label_ref (match_dup 3))
                      (pc)))]
  {
    operands[4] = GEN_INT (exact_log2 (INTVAL (operands[1]) + 1));
    operands[5] = gen_rtx_fmt_ee (GET_CODE (operands[2]) == GTU ? NE : EQ,
                                  VOIDmode, cc0_rtx, const0_rtx);
  })

;; Transform
;;
;;      cmp.l   #15,er0
;;      bgt     .L1
;;
;; into
;;
;;      and     #240,r0l
;;      mov.l   er0,er0
;;      bgt     .L1

(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 "gtle_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]) == 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 4)))
   (set (cc0) (compare (match_dup 0)
                       (const_int 0)))
   (set (pc)
        (if_then_else (match_dup 2)
                      (label_ref (match_dup 3))
                      (pc)))]
  {
    operands[4] = GEN_INT (~INTVAL (operands[1]));
  })

;; Transform
;;
;;      cmp.l   #15,er0
;;      bhi     .L1
;;
;; into
;;
;;      and     #240,r0l
;;      mov.l   er0,er0
;;      bne     .L1

(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])
    && ((TARGET_H8300H && 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 4)))
   (set (cc0) (compare (match_dup 0)
                       (const_int 0)))
   (set (pc)
        (if_then_else (match_dup 5)
                      (label_ref (match_dup 3))
                      (pc)))]
  {
    operands[4] = GEN_INT (~INTVAL (operands[1]));
    operands[5] = gen_rtx_fmt_ee (GET_CODE (operands[2]) == GTU ? NE : EQ,
                                  VOIDmode, cc0_rtx, const0_rtx);
  })

;; Transform
;;
;;      cmp.l   #65535,er0
;;      bgt     .L1
;;
;; into
;;
;;      mov.l   e0,e0
;;      bgt     .L1

(define_peephole2
  [(set (cc0)
        (compare (match_operand:SI 0 "register_operand" "")
                 (const_int 65535)))
   (set (pc)
        (if_then_else (match_operator 1 "gtle_operator"
                       [(cc0) (const_int 0)])
                      (label_ref (match_operand 2 "" ""))
                      (pc)))]
  "TARGET_H8300H || TARGET_H8300S"
  [(set (cc0) (compare (and:SI (match_dup 0)
                               (const_int -65536))
                       (const_int 0)))
   (set (pc)
        (if_then_else (match_dup 1)
                      (label_ref (match_dup 2))
                      (pc)))]
  "")

;; Transform
;;
;;      cmp.l   #65535,er0
;;      bhi     .L1
;;
;; into
;;
;;      mov.l   e0,e0
;;      bne     .L1

(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) (compare (and:SI (match_dup 0)
                               (const_int -65536))
                       (const_int 0)))
   (set (pc)
        (if_then_else (match_dup 3)
                      (label_ref (match_dup 2))
                      (pc)))]
  {  
    operands[3] = gen_rtx_fmt_ee (GET_CODE (operands[1]) == GTU ? NE : EQ,
                                  VOIDmode, cc0_rtx, const0_rtx);
  })

;; Transform
;;
;;      cmp.l   #1,er0
;;      beq     .L1
;;
;; into
;;
;;      mov.l   er0,er1
;;      dec.l   #1,er1
;;      beq     .L1

;; 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)
    && INTVAL (operands[1]) != 0
    && !peep2_reg_dead_p (1, operands[0])
    && !same_cmp_following_p (insn)"
  [(set (match_dup 4)
        (match_dup 0))
   (set (match_dup 4)
        (unspec:SI [(match_dup 4)
                    (match_dup 5)]
                   UNSPEC_INCDEC))
   (set (cc0) (compare (match_dup 4)
                       (const_int 0)))
   (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) (compare (match_dup 0)
                       (const_int 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) (compare (match_dup 4)
                       (const_int 0)))
   (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_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) (compare (match_dup 0)
                       (const_int 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) (compare (match_dup 4)
                       (const_int 0)))
   (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_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) (compare (match_dup 0)
                       (const_int 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) (compare (match_dup 4)
                       (const_int 0)))
   (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_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) (compare (match_dup 0)
                       (const_int 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) (compare (match_dup 5)
                       (const_int 0)))
   (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_mode (INTVAL (operands[1]), QImode);
    operands[7] = gen_int_mode (INTVAL (operands[2]), QImode);
  })

;; These triggers right at the end of allocation of locals in the
;; prologue (and possibly at other places).

;; stack adjustment of -4, generate one push
;;
;; before : 6 bytes, 10 clocks
;; after  : 4 bytes, 10 clocks

(define_peephole2
  [(set (reg:SI SP_REG)
        (plus:SI (reg:SI SP_REG)
                 (const_int -4)))
   (set (mem:SI (reg:SI SP_REG))
        (match_operand:SI 0 "register_operand" ""))]
  "(TARGET_H8300H || TARGET_H8300S) && !TARGET_NORMAL_MODE
    && REGNO (operands[0]) != SP_REG"
  [(set (mem:SI (pre_dec:SI (reg:SI SP_REG)))
        (match_dup 0))]
  "")

;; stack adjustment of -12, generate one push
;;
;; before : 10 bytes, 14 clocks
;; after  :  8 bytes, 14 clocks

(define_peephole2
  [(set (reg:SI SP_REG)
        (plus:SI (reg:SI SP_REG)
                 (const_int -12)))
   (set (mem:SI (reg:SI SP_REG))
        (match_operand:SI 0 "register_operand" ""))]
  "(TARGET_H8300H || TARGET_H8300S) && !TARGET_NORMAL_MODE
    && REGNO (operands[0]) != SP_REG"
  [(set (reg:SI SP_REG)
        (plus:SI (reg:SI SP_REG)
                 (const_int -4)))
   (set (reg:SI SP_REG)
        (plus:SI (reg:SI SP_REG)
                 (const_int -4)))
   (set (mem:SI (pre_dec:SI (reg:SI SP_REG)))
        (match_dup 0))]
  "")

;; Transform
;;
;;      mov     dst,reg
;;      op      src,reg
;;      mov     reg,dst
;;
;; into
;;
;;      op      src,dst
;;
;; if "reg" dies at the end of the sequence.

(define_peephole2
  [(set (match_operand 0 "register_operand" "")
        (match_operand 1 "memory_operand" ""))
   (set (match_dup 0)
        (match_operator 2 "h8sx_binary_memory_operator"
         [(match_dup 0)
          (match_operand 3 "h8300_src_operand" "")]))
   (set (match_operand 4 "memory_operand" "")
        (match_dup 0))]
  "0 /* Disable because it breaks compiling fp-bit.c.  */
   && TARGET_H8300SX
   && peep2_reg_dead_p (3, operands[0])
   && !reg_overlap_mentioned_p (operands[0], operands[3])
   && !reg_overlap_mentioned_p (operands[0], operands[4])
   && h8sx_mergeable_memrefs_p (operands[4], operands[1])"
  [(set (match_dup 4)
        (match_dup 5))]
  {
    operands[5] = shallow_copy_rtx (operands[2]);
    XEXP (operands[5], 0) = operands[1];
  })

;; Transform
;;
;;      mov     src,reg
;;      op      reg,dst
;;
;; into
;;
;;      op      src,dst
;;
;; if "reg" dies in the second insn.

(define_peephole2
  [(set (match_operand 0 "register_operand" "")
        (match_operand 1 "h8300_src_operand" ""))
   (set (match_operand 2 "h8300_dst_operand" "")
        (match_operator 3 "h8sx_binary_memory_operator"
         [(match_operand 4 "h8300_dst_operand" "")
          (match_dup 0)]))]
  "0 /* Disable because it breaks compiling fp-bit.c.  */
   && TARGET_H8300SX
   && peep2_reg_dead_p (2, operands[0])
   && !reg_overlap_mentioned_p (operands[0], operands[4])"
  [(set (match_dup 2)
        (match_dup 5))]
  {
    operands[5] = shallow_copy_rtx (operands[3]);
    XEXP (operands[5], 1) = operands[1];
  })

;; Transform
;;
;;      mov     dst,reg
;;      op      reg
;;      mov     reg,dst
;;
;; into
;;
;;      op      dst
;;
;; if "reg" dies at the end of the sequence.

(define_peephole2
  [(set (match_operand 0 "register_operand" "")
        (match_operand 1 "memory_operand" ""))
   (set (match_dup 0)
        (match_operator 2 "h8sx_unary_memory_operator"
         [(match_dup 0)]))
   (set (match_operand 3 "memory_operand" "")
        (match_dup 0))]
  "TARGET_H8300SX
   && peep2_reg_dead_p (3, operands[0])
   && !reg_overlap_mentioned_p (operands[0], operands[3])
   && h8sx_mergeable_memrefs_p (operands[3], operands[1])"
  [(set (match_dup 3)
        (match_dup 4))]
  {
    operands[4] = shallow_copy_rtx (operands[2]);
    XEXP (operands[4], 0) = operands[1];
  })

;; Transform
;;
;;      mov     src1,reg
;;      cmp     reg,src2
;;
;; into
;;
;;      cmp     src1,src2
;;
;; if "reg" dies in the comparison.

(define_peephole2
  [(set (match_operand 0 "register_operand" "")
        (match_operand 1 "h8300_dst_operand" ""))
   (set (cc0)
        (compare (match_dup 0)
                 (match_operand 2 "h8300_src_operand" "")))]
  "TARGET_H8300SX
   && peep2_reg_dead_p (2, operands[0])
   && !reg_overlap_mentioned_p (operands[0], operands[2])
   && operands[2] != const0_rtx"
  [(set (cc0)
        (compare (match_dup 1)
                 (match_dup 2)))])

;; Likewise for the second operand.

(define_peephole2
  [(set (match_operand 0 "register_operand" "")
        (match_operand 1 "h8300_src_operand" ""))
   (set (cc0)
        (compare (match_operand 2 "h8300_dst_operand" "")
                 (match_dup 0)))]
  "TARGET_H8300SX
   && peep2_reg_dead_p (2, operands[0])
   && !reg_overlap_mentioned_p (operands[0], operands[2])"
  [(set (cc0)
        (compare (match_dup 2)
                 (match_dup 1)))])

;; Combine two moves.

(define_peephole2
  [(set (match_operand 0 "register_operand" "")
        (match_operand 1 "h8300_src_operand" ""))
   (set (match_operand 2 "h8300_dst_operand" "")
        (match_dup 0))]
  "TARGET_H8300SX
   && peep2_reg_dead_p (2, operands[0])
   && !reg_overlap_mentioned_p (operands[0], operands[2])"
  [(set (match_dup 2)
        (match_dup 1))])