Update copyright years.

[thirdparty/gcc.git] / gcc / config / mn10300 / mn10300.md

;; GCC machine description for Matsushita MN10300
;; Copyright (C) 1996-2024 Free Software Foundation, Inc.
;; Contributed by Jeff Law (law@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/>.

;; The original PO technology requires these to be ordered by speed,
;; so that assigner will pick the fastest.

;; See file "rtl.def" for documentation on define_insn, match_*, et. al.

(define_constants [
  (PIC_REG   6)
  (SP_REG    9)
  (MDR_REG  50)
  (CC_REG   51)

  (UNSPEC_PIC           1)
  (UNSPEC_GOT           2)
  (UNSPEC_GOTOFF        3)
  (UNSPEC_PLT           4)
  (UNSPEC_GOTSYM_OFF    5)

  (UNSPEC_EXT           6)
  (UNSPEC_BSCH          7)

  ;; This is used to encode LIW patterns.
  (UNSPEC_LIW           8)
  ;; This is for the low overhead loop instructions.
  (UNSPEC_SETLB         9)
])

(include "predicates.md")
(include "constraints.md")

;; Processor type.  This attribute must exactly match the processor_type
;; enumeration in mn10300.h.
(define_attr "cpu" "mn10300,am33,am33_2,am34"
  (const (symbol_ref "(enum attr_cpu) mn10300_tune_cpu")))

;; Used to control the "enabled" attribute on a per-instruction basis.
(define_attr "isa" "base,am33,am33_2,am34"
  (const_string "base"))

(define_attr "enabled" ""
  (cond [(eq_attr "isa" "base")
         (const_int 1)

         (and (eq_attr "isa" "am33")
              (match_test "TARGET_AM33"))
         (const_int 1)

         (and (eq_attr "isa" "am33_2")
              (match_test "TARGET_AM33_2"))
         (const_int 1)
        
         (and (eq_attr "isa" "am34")
              (match_test "TARGET_AM34"))
         (const_int 1)
        ]
        (const_int 0))
)

(define_mode_iterator INT [QI HI SI])

\f
;; Bundling of smaller insns into a long instruction word (LIW)
(define_automaton "liw_bundling")
(automata_option "ndfa")

(define_cpu_unit "liw_op1_u,liw_op2_u" "liw_bundling")

(define_attr "liw" "op1,op2,both,either"
  (const_string "both"))
;; Note: this list must match the one defined for liw_op_names[].
(define_attr "liw_op" "add,cmp,sub,mov,and,or,xor,asr,lsr,asl,none,max"
  (const_string "none"))

(define_insn_reservation "liw_op1" 1
  (and (ior (eq_attr "cpu" "am33")
            (eq_attr "cpu" "am33_2")
            (eq_attr "cpu" "am34"))
       (eq_attr "liw" "op1"))
  "liw_op1_u");
(define_insn_reservation "liw_op2" 1
  (and (ior (eq_attr "cpu" "am33")
            (eq_attr "cpu" "am33_2")
            (eq_attr "cpu" "am34"))
       (eq_attr "liw" "op2"))
  "liw_op2_u");
(define_insn_reservation "liw_both" 1
  (and (ior (eq_attr "cpu" "am33")
            (eq_attr "cpu" "am33_2")
            (eq_attr "cpu" "am34"))
       (eq_attr "liw" "both"))
  "liw_op1_u + liw_op2_u");
(define_insn_reservation "liw_either" 1
  (and (ior (eq_attr "cpu" "am33")
            (eq_attr "cpu" "am33_2")
            (eq_attr "cpu" "am34"))
       (eq_attr "liw" "either"))
  "liw_op1_u | liw_op2_u");
\f
;; ----------------------------------------------------------------------
;; Pipeline description.
;; ----------------------------------------------------------------------

;; The AM33 only has a single pipeline.  It has five stages (fetch,
;; decode, execute, memory access, writeback) each of which normally
;; takes a single CPU clock cycle.

;; The timings attribute consists of two numbers, the first is the
;; throughput, which is the number of cycles the instruction takes
;; to execute and generate a result.  The second is the latency
;; which is the effective number of cycles the instruction takes to
;; execute if its result is used by the following instruction.  The
;; latency is always greater than or equal to the throughput.
;; These values were taken from the Appendix of the "MN103E Series
;; Instruction Manual" and the timings for the AM34.

;; Note - it would be nice to use strings rather than integers for
;; the possible values of this attribute, so that we can have the
;; gcc build mechanism check for values that are not supported by
;; the reservations below.  But this will not work because the code
;; in mn10300_adjust_sched_cost() needs integers not strings.

(define_attr "timings" "" (const_int 11))

(define_automaton "pipelining")
(define_cpu_unit "throughput" "pipelining")

(define_insn_reservation "throughput__1_latency__1"  1
  (eq_attr "timings" "11") "throughput")
(define_insn_reservation "throughput__1_latency__2"  2
  (eq_attr "timings" "12") "throughput,nothing")
(define_insn_reservation "throughput__1_latency__3"  3
  (eq_attr "timings" "13") "throughput,nothing*2")
(define_insn_reservation "throughput__1_latency__4"  4
  (eq_attr "timings" "14") "throughput,nothing*3")
(define_insn_reservation "throughput__2_latency__2"  2
  (eq_attr "timings" "22") "throughput*2")
(define_insn_reservation "throughput__2_latency__3"  3
  (eq_attr "timings" "23") "throughput*2,nothing")
(define_insn_reservation "throughput__2_latency__4"  4
  (eq_attr "timings" "24") "throughput*2,nothing*2")
(define_insn_reservation "throughput__2_latency__5"  5
  (eq_attr "timings" "25") "throughput*2,nothing*3")
(define_insn_reservation "throughput__3_latency__3"  3
  (eq_attr "timings" "33") "throughput*3")
(define_insn_reservation "throughput__3_latency__7"  7
  (eq_attr "timings" "37") "throughput*3,nothing*4")
(define_insn_reservation "throughput__4_latency__4"  4
  (eq_attr "timings" "44") "throughput*4")
(define_insn_reservation "throughput__4_latency__7"  7
  (eq_attr "timings" "47") "throughput*4,nothing*3")
(define_insn_reservation "throughput__4_latency__8"  8
  (eq_attr "timings" "48") "throughput*4,nothing*4")
(define_insn_reservation "throughput__5_latency__5"  5
  (eq_attr "timings" "55") "throughput*5")
(define_insn_reservation "throughput__6_latency__6"  6
  (eq_attr "timings" "66") "throughput*6")
(define_insn_reservation "throughput__7_latency__7"  7
  (eq_attr "timings" "77") "throughput*7")
(define_insn_reservation "throughput__7_latency__8"  8
  (eq_attr "timings" "78") "throughput*7,nothing")
(define_insn_reservation "throughput__8_latency__8"  8
  (eq_attr "timings" "88") "throughput*8")
(define_insn_reservation "throughput__9_latency__9"  9
  (eq_attr "timings" "99") "throughput*9")
(define_insn_reservation "throughput__8_latency_14" 14
  (eq_attr "timings" "814") "throughput*8,nothing*6")
(define_insn_reservation "throughput__9_latency_10" 10
  (eq_attr "timings" "910") "throughput*9,nothing")
(define_insn_reservation "throughput_10_latency_10" 10
  (eq_attr "timings" "1010") "throughput*10")
(define_insn_reservation "throughput_12_latency_16" 16
  (eq_attr "timings" "1216") "throughput*12,nothing*4")
(define_insn_reservation "throughput_13_latency_13" 13
  (eq_attr "timings" "1313") "throughput*13")
(define_insn_reservation "throughput_14_latency_14" 14
  (eq_attr "timings" "1414") "throughput*14")
(define_insn_reservation "throughput_13_latency_17" 17
  (eq_attr "timings" "1317") "throughput*13,nothing*4")
(define_insn_reservation "throughput_23_latency_27" 27
  (eq_attr "timings" "2327") "throughput*23,nothing*4")
(define_insn_reservation "throughput_25_latency_31" 31
  (eq_attr "timings" "2531") "throughput*25,nothing*6")
(define_insn_reservation "throughput_38_latency_39" 39
  (eq_attr "timings" "3839") "throughput*38,nothing")
(define_insn_reservation "throughput_39_latency_40" 40
  (eq_attr "timings" "3940") "throughput*39,nothing")
(define_insn_reservation "throughput_40_latency_40" 40
  (eq_attr "timings" "4040") "throughput*40")
(define_insn_reservation "throughput_41_latency_42" 42
  (eq_attr "timings" "4142") "throughput*41,nothing")
(define_insn_reservation "throughput_42_latency_43" 44
  (eq_attr "timings" "4243") "throughput*42,nothing")
(define_insn_reservation "throughput_43_latency_44" 44
  (eq_attr "timings" "4344") "throughput*43,nothing")
(define_insn_reservation "throughput_45_latency_46" 46
  (eq_attr "timings" "4546") "throughput*45,nothing")
(define_insn_reservation "throughput_47_latency_53" 53
  (eq_attr "timings" "4753") "throughput*47,nothing*6")

;; Note - the conflict between memory load/store instructions
;; and floating point instructions described in section 1-7-4
;; of Chapter 3 of the MN103E Series Instruction Manual is
;; handled by the mn10300_adjust_sched_cost function.
\f
;; ----------------------------------------------------------------------
;; MOVE INSTRUCTIONS
;; ----------------------------------------------------------------------

;; movqi

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

(define_insn "*movqi_internal"
  [(set (match_operand:QI 0 "nonimmediate_operand" "=*r,D*r,D*r,D,m,*z,d")
        (match_operand:QI 1 "general_operand"      "  0,D*r,  i,m,D,d,*z"))]
  "(register_operand (operands[0], QImode)
    || register_operand (operands[1], QImode))"
{
  switch (which_alternative)
    {
    case 0:
      return "";
    case 1:
    case 2:
    case 5:
    case 6:
      return "mov %1,%0";
    case 3:
    case 4:
      return "movbu %1,%0";
    default:
      gcc_unreachable ();
    }
}
  [(set_attr_alternative "timings"
         [(const_int 11)
          (const_int 11)
          (const_int 11)
          (if_then_else (eq_attr "cpu" "am34")
                        (const_int 13) (const_int 24))
          (if_then_else (eq_attr "cpu" "am34")
                        (const_int 11) (const_int 22))
          (const_int 11)
          (const_int 11)
         ])]
)

;; movhi

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

(define_insn "*movhi_internal"
  [(set (match_operand:HI 0 "nonimmediate_operand" "=*r,D*r,D*r,D,m,*z,d")
        (match_operand:HI 1 "general_operand"      "  0,  i,D*r,m,D,d,*z"))]
  "(register_operand (operands[0], HImode)
    || register_operand (operands[1], HImode))"
{
  switch (which_alternative)
    {
    case 0:
      return "";
    case 1:
      /* Note that "MOV imm8,An" is already zero-extending, and is 2 bytes.
         We have "MOV imm16,Dn" at 3 bytes.  The only win for the 4 byte
         movu is for an 8-bit unsigned move into Rn.  */
      if (TARGET_AM33
          && CONST_INT_P (operands[1])
          && IN_RANGE (INTVAL (operands[1]), 0x80, 0xff)
          && REGNO_EXTENDED_P (REGNO (operands[0]), 1))
        return "movu %1,%0";
      /* FALLTHRU */
    case 5:
    case 6:
    case 2:
      return "mov %1,%0";
    case 3:
    case 4:
      return "movhu %1,%0";
    default:
      gcc_unreachable ();
    }
}
  [(set_attr_alternative "timings"
         [(const_int 11)
          (const_int 11)
          (if_then_else (eq_attr "cpu" "am34")
                        (const_int 11) (const_int 22))
          (if_then_else (eq_attr "cpu" "am34")
                        (const_int 13) (const_int 24))
          (if_then_else (eq_attr "cpu" "am34")
                        (const_int 11) (const_int 22))
          (if_then_else (eq_attr "cpu" "am34")
                        (const_int 11) (const_int 22))
          (if_then_else (eq_attr "cpu" "am34")
                        (const_int 11) (const_int 22))
         ])]
)

;; movsi and helpers

;; We use this to handle addition of two values when one operand is the
;; stack pointer and the other is a memory reference of some kind.  Reload
;; does not handle them correctly without this expander.
(define_expand "reload_plus_sp_const"
  [(set (match_operand:SI     0 "register_operand" "=r")
        (match_operand:SI     1 "impossible_plus_operand" ""))
   (clobber (match_operand:SI 2 "register_operand" "=&A"))]
  ""
{
  rtx dest, scratch, other;

  dest = operands[0];
  scratch = operands[2];

  other = XEXP (operands[1], 1);
  if (other == stack_pointer_rtx)
    other = XEXP (operands[1], 0);

  if (true_regnum (other) == true_regnum (dest))
    {
      gcc_assert (true_regnum (scratch) != true_regnum (dest));
      emit_move_insn (scratch, stack_pointer_rtx);
      emit_insn (gen_addsi3 (dest, dest, scratch));
    }
  else if (TARGET_AM33 || REGNO_REG_CLASS (true_regnum (dest)) == ADDRESS_REGS)
    {
      emit_move_insn (dest, stack_pointer_rtx);
      if (other == stack_pointer_rtx)
        emit_insn (gen_addsi3 (dest, dest, dest));
      else if (other != const0_rtx)
        emit_insn (gen_addsi3 (dest, dest, other));
    }
  else
    {
      emit_move_insn (scratch, stack_pointer_rtx);
      if (other == stack_pointer_rtx)
        {
          emit_move_insn (dest, scratch);
          emit_insn (gen_addsi3 (dest, dest, dest));
        }
      else if (other != const0_rtx)
        {
          emit_move_insn (dest, other);
          emit_insn (gen_addsi3 (dest, dest, scratch));
        }
      else
        emit_move_insn (dest, scratch);
    }
  DONE;
})

(define_expand "movsi"
  [(set (match_operand:SI 0 "nonimmediate_operand")
        (match_operand:SI 1 "general_operand"))]
  ""
{
  /* One of the ops has to be in a register.  */
  if (!register_operand (operand1, SImode)
      && !register_operand (operand0, SImode))
    operands[1] = force_reg (SImode, operand1);
  if (flag_pic)
    {
      rtx temp;
      if (SYMBOLIC_CONST_P (operands[1]))
        {
          if (MEM_P (operands[0]))
            operands[1] = force_reg (Pmode, operands[1]);
          else
            {
              temp = (!can_create_pseudo_p ()
                      ? operands[0]
                      : gen_reg_rtx (Pmode));
              operands[1] = mn10300_legitimize_pic_address (operands[1], temp);
            }
        }
      else if (GET_CODE (operands[1]) == CONST
               && GET_CODE (XEXP (operands[1], 0)) == PLUS
               && SYMBOLIC_CONST_P (XEXP (XEXP (operands[1], 0), 0)))
        {
          temp = !can_create_pseudo_p () ? operands[0] : gen_reg_rtx (Pmode);
          temp = mn10300_legitimize_pic_address (XEXP (XEXP (operands[1], 0), 0),
                                                 temp);
          operands[1] = expand_binop (SImode, add_optab, temp,
                                      XEXP (XEXP (operands[1], 0), 1),
                                      (!can_create_pseudo_p ()
                                       ? temp
                                       : gen_reg_rtx (Pmode)),
                                      0, OPTAB_LIB_WIDEN);
        }
    }
})

(define_insn "*movsi_internal"
  [(set (match_operand:SI 0 "nonimmediate_operand"
                          "=r,r,r,r,m,r, A,*y,*y,*z,*d")
        (match_operand:SI 1 "general_operand"
                          " 0,O,i,r,r,m,*y, A, i,*d,*z"))]
  "register_operand (operands[0], SImode)
   || register_operand (operands[1], SImode)"
{
  switch (which_alternative)
    {
    case 0:
      return "";
    case 1: /* imm-reg.  */
    case 2: 
      /* See movhi for a discussion of sizes for 8-bit movu.  Note that the
         24-bit movu is 6 bytes, which is the same size as the full 32-bit
         mov form for An and Dn.  So again movu is only a win for Rn.  */
      if (TARGET_AM33
          && CONST_INT_P (operands[1])
          && REGNO_EXTENDED_P (REGNO (operands[0]), 1))
        {
          HOST_WIDE_INT val = INTVAL (operands[1]);
          if (IN_RANGE (val, 0x80, 0xff)
              || IN_RANGE (val, 0x800000, 0xffffff))
            return "movu %1,%0";
        }
      /* FALLTHRU */
    case 3:  /* reg-reg */
    case 4:  /* reg-mem */
    case 5:  /* mem-reg */
    case 6:  /* sp-reg */
    case 7:  /* reg-sp */
    case 8:  /* imm-sp */
    case 9:  /* reg-mdr */
    case 10:  /* mdr-reg */
      return "mov %1,%0";
    default:
      gcc_unreachable ();
    }
}
  [(set_attr "isa" "*,*,*,*,*,*,*,*,am33,*,*")
   (set_attr "liw" "*,either,*,either,*,*,*,*,*,*,*")
   (set_attr "liw_op" "mov")
   (set_attr_alternative "timings"
         [(const_int 11)
          (const_int 22)
          (const_int 22)
          (const_int 11)
          (if_then_else (eq_attr "cpu" "am34")
                        (const_int 11) (const_int 22))
          (if_then_else (eq_attr "cpu" "am34")
                        (const_int 13) (const_int 24))
          (if_then_else (eq_attr "cpu" "am34")
                        (const_int 11) (const_int 22))
          (if_then_else (eq_attr "cpu" "am34")
                        (const_int 13) (const_int 24))
          (const_int 11)
          (const_int 11)
          (const_int 11)
         ])]
)

(define_expand "movsf"
  [(set (match_operand:SF 0 "nonimmediate_operand")
        (match_operand:SF 1 "general_operand"))]
  "TARGET_AM33_2"
{
  /* One of the ops has to be in a register.  */
  if (!register_operand (operand1, SFmode)
      && !register_operand (operand0, SFmode))
    operands[1] = force_reg (SFmode, operand1);
})

(define_insn "*movsf_internal"
  [(set (match_operand:SF 0 "nonimmediate_operand" "=rf,r,f,r,f,r,f,r,m,f,Q,z,d")
        (match_operand:SF 1 "general_operand"      "  0,F,F,r,f,f,r,m,r,Q,f,d,z"))]
  "TARGET_AM33_2
   && (register_operand (operands[0], SFmode)
       || register_operand (operands[1], SFmode))"
{
  switch (which_alternative)
    {
    case 0:
      return "";
    case 1:
    case 3:
    case 7:
    case 8:
    case 11:
    case 12:
      return "mov %1,%0";
    case 2:
    case 4:
    case 5:
    case 6:
    case 9:
    case 10:
      return "fmov %1,%0";
    default:
      gcc_unreachable ();
    }
}
  [(set_attr_alternative "timings"
                 [(const_int 11)
                  (const_int 22)
                  (if_then_else (eq_attr "cpu" "am34")
                                (const_int 47) (const_int 25))
                  (const_int 11)
                  (if_then_else (eq_attr "cpu" "am34")
                                (const_int 13) (const_int 14))
                  (if_then_else (eq_attr "cpu" "am34")
                                (const_int 13) (const_int 12))
                  (if_then_else (eq_attr "cpu" "am34")
                                (const_int 13) (const_int 14))
                  (if_then_else (eq_attr "cpu" "am34")
                                (const_int 13) (const_int 24))
                  (if_then_else (eq_attr "cpu" "am34")
                                (const_int 13) (const_int 24))
                  (if_then_else (eq_attr "cpu" "am34")
                                (const_int 13) (const_int 24))
                  (if_then_else (eq_attr "cpu" "am34")
                                (const_int 13) (const_int 24))
                  (const_int 22)
                  (const_int 22)
                 ])]
)

;; If the flags register is not live, generate CLR instead of MOV 0.
;; For MN103, this is only legal for DATA_REGS; for AM33 this is legal
;; but not a win for ADDRESS_REGS.
(define_peephole2
  [(set (match_operand:INT 0 "register_operand" "") (const_int 0))]
  "peep2_regno_dead_p (0, CC_REG)
   && (REGNO_DATA_P (REGNO (operands[0]), 1)
       || REGNO_EXTENDED_P (REGNO (operands[0]), 1))"
  [(parallel [(set (match_dup 0) (const_int 0))
              (clobber (reg:CC CC_REG))])]
)

(define_insn "*mov<mode>_clr"
  [(set (match_operand:INT 0 "register_operand" "=D")
        (const_int 0))
   (clobber (reg:CC CC_REG))]
  ""
  "clr %0"
)
\f
;; ----------------------------------------------------------------------
;; ADD INSTRUCTIONS
;; ----------------------------------------------------------------------

(define_insn "addsi3"
  [(set (match_operand:SI          0 "register_operand"  "=r,r,r,!*y,!r")
        (plus:SI (match_operand:SI 1 "register_operand"  "%0,0,0,  0, r")
                 (match_operand:SI 2 "nonmemory_operand"  "r,O,i,  i, r")))
   (clobber (reg:CC CC_REG))]
  ""
  { return mn10300_output_add (operands, false); }
  [(set_attr "timings" "11,11,11,11,22")
   (set_attr "liw" "either,either,*,*,*")
   (set_attr "liw_op" "add")]
)

;; Note that ADD IMM,SP does not set the flags, so omit that here.
(define_insn "*addsi3_flags"
  [(set (reg CC_REG)
        (compare (plus:SI (match_operand:SI 1 "register_operand"  "%0, r")
                          (match_operand:SI 2 "nonmemory_operand" "ri, r"))
                 (const_int 0)))
   (set (match_operand:SI          0 "register_operand"  "=r,!r")
        (plus:SI (match_dup 1) (match_dup 2)))]
  "reload_completed && mn10300_match_ccmode (insn, CCZNCmode)"
  { return mn10300_output_add (operands, true); }
  [(set_attr "timings" "11,22")]
)

;; A helper to expand the above, with the CC_MODE filled in.
(define_expand "addsi3_flags"
  [(parallel [(set (reg:CCZNC CC_REG)
                   (compare:CCZNC (plus:SI (match_dup 1) (match_dup 2))
                                  (const_int 0)))
              (set (match_operand:SI 0 "register_operand")
                   (plus:SI (match_operand:SI 1 "register_operand")
                            (match_operand:SI 2 "nonmemory_operand")))])]
  ""
)

(define_insn "addc_internal"
  [(set (match_operand:SI 0 "register_operand"            "=D,r,r")
        (plus:SI
          (plus:SI
            (ltu:SI (reg:CC CC_REG) (const_int 0))
            (match_operand:SI 1 "register_operand"        "%0,0,r"))
          (match_operand:SI 2 "reg_or_am33_const_operand" " D,i,r")))
    (clobber (reg:CC CC_REG))]
  "reload_completed"
  "@
   addc %2,%0
   addc %2,%0
   addc %2,%1,%0"
  [(set_attr "isa" "*,am33,am33")]
)

(define_expand "adddi3"
  [(set (match_operand:DI 0 "register_operand" "")
        (plus:DI (match_operand:DI 1 "register_operand" "")
                 (match_operand:DI 2 "nonmemory_operand" "")))]
  ""
{
  rtx op0l, op0h, op1l, op1h, op2l, op2h;

  op0l = gen_lowpart (SImode, operands[0]);
  op1l = gen_lowpart (SImode, operands[1]);
  op2l = gen_lowpart (SImode, operands[2]);
  op0h = gen_highpart (SImode, operands[0]);
  op1h = gen_highpart (SImode, operands[1]);
  op2h = gen_highpart_mode (SImode, DImode, operands[2]);

  if (!reg_or_am33_const_operand (op2h, SImode))
    op2h = force_reg (SImode, op2h);

  emit_insn (gen_adddi3_internal (op0l, op0h, op1l, op2l, op1h, op2h));
  DONE;
})

;; Note that reload only supports one commutative operand.  Thus we cannot
;; auto-swap both the high and low outputs with their matching constraints.
;; For MN103, we're strapped for registers but thankfully the alternatives
;; are few.  For AM33, it becomes much easier to not represent the early
;; clobber and 6 permutations of immediate and three-operand adds, but
;; instead allocate a scratch register and do the expansion by hand.

(define_insn_and_split "adddi3_internal"
  [(set (match_operand:SI          0 "register_operand"   "=r, r, r")
        (plus:SI (match_operand:SI 2 "register_operand"   "%0, 0, r")
                 (match_operand:SI 3 "nonmemory_operand"  "ri,ri,ri")))
   (set (match_operand:SI          1 "register_operand"   "=D, D, r")
        (plus:SI
          (plus:SI
            (ltu:SI (plus:SI (match_dup 2) (match_dup 3)) (match_dup 2))
            (match_operand:SI      4 "register_operand"   " 1, D, r"))
          (match_operand:SI 5 "reg_or_am33_const_operand" " D, 1,ri")))
   (clobber (match_scratch:SI      6                      "=X, X,&r"))
   (clobber (reg:CC CC_REG))]
  ""
  "#"
  "reload_completed"
  [(const_int 0)]
{
  rtx op0l = operands[0];
  rtx op0h = operands[1];
  rtx op1l = operands[2];
  rtx op2l = operands[3];
  rtx op1h = operands[4];
  rtx op2h = operands[5];
  rtx scratch = operands[6];
  rtx x;

  if (reg_overlap_mentioned_p (op0l, op1h))
    {
      emit_move_insn (scratch, op0l);
      op1h = scratch;
      if (reg_overlap_mentioned_p (op0l, op2h))
        op2h = scratch;
    }
  else if (reg_overlap_mentioned_p (op0l, op2h))
    {
      emit_move_insn (scratch, op0l);
      op2h = scratch;
    }

  if (rtx_equal_p (op0l, op1l))
    ;
  else if (rtx_equal_p (op0l, op2l))
    x = op1l, op1l = op2l, op2l = x;
  else
    {
      gcc_assert (TARGET_AM33);
      if (!REG_P (op2l))
        {
          emit_move_insn (op0l, op2l);
          op2l = op1l;
          op1l = op0l;
        }
    }
  emit_insn (gen_addsi3_flags (op0l, op1l, op2l));

  if (rtx_equal_p (op0h, op1h))
    ;
  else if (rtx_equal_p (op0h, op2h))
    x = op1h, op1h = op2h, op2h = x;
  else
    {
      gcc_assert (TARGET_AM33);
      if (!REG_P (op2h))
        {
          emit_move_insn (op0h, op2h);
          op2h = op1h;
          op1h = op0h;
        }
    }
  emit_insn (gen_addc_internal (op0h, op1h, op2h));
  DONE;
}
  [(set_attr "isa" "*,*,am33")]
)

;; The following pattern is generated by combine when it proves that one
;; of the inputs to the low-part of the double-word add is zero, and thus
;; no carry is generated into the high-part.

(define_insn_and_split "*adddi3_degenerate"
  [(set (match_operand:SI          0 "register_operand"  "=&r,&r")
        (match_operand:SI          2 "nonmemory_operand" "  0, 0"))
   (set (match_operand:SI          1 "register_operand"  "=r , r")
        (plus:SI (match_operand:SI 3 "register_operand"  "%1 , r")
                 (match_operand:SI 4 "nonmemory_operand" "ri, r")))
   (clobber (reg:CC CC_REG))]
  ""
  "#"
  ""
  [(const_int 0)]
{
  rtx scratch = NULL_RTX;
  if (!rtx_equal_p (operands[0], operands[2]))
    {
      if (reg_overlap_mentioned_p (operands[0], operands[3])
          || reg_overlap_mentioned_p (operands[0], operands[4]))
        {
          scratch = gen_reg_rtx (SImode);
          emit_move_insn (scratch, operands[2]);
        }
      else
        emit_move_insn (operands[0], operands[2]);
    }
  emit_insn (gen_addsi3 (operands[1], operands[3], operands[4]));
  if (scratch)
    emit_move_insn (operands[0], scratch);
  DONE;
})

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

(define_insn "subsi3"
  [(set (match_operand:SI           0 "register_operand"  "=r,r,r,r")
        (minus:SI (match_operand:SI 1 "register_operand"   "0,0,0,r")
                  (match_operand:SI 2 "nonmemory_operand"  "r,O,i,r")))
   (clobber (reg:CC CC_REG))]
  ""
  "@
   sub %2,%0
   sub %2,%0
   sub %2,%0
   sub %2,%1,%0"
  [(set_attr "isa" "*,*,*,am33")
   (set_attr "liw" "either,either,*,*")
   (set_attr "liw_op" "sub")
   (set_attr "timings" "11,11,11,22")]
)

(define_insn "*subsi3_flags"
  [(set (reg CC_REG)
        (compare (minus:SI (match_operand:SI 1 "register_operand"  "0, r")
                           (match_operand:SI 2 "nonmemory_operand" "ri,r"))
                 (const_int 0)))
   (set (match_operand:SI           0 "register_operand"  "=r, r")
        (minus:SI (match_dup 1) (match_dup 2)))]
  "reload_completed && mn10300_match_ccmode (insn, CCZNCmode)"
  "@
   sub %2,%0
   sub %2,%1,%0"
  [(set_attr "isa" "*,am33")
   (set_attr "timings" "11,22")]
)

;; A helper to expand the above, with the CC_MODE filled in.
(define_expand "subsi3_flags"
  [(parallel [(set (reg:CCZNC CC_REG)
                   (compare:CCZNC (minus:SI (match_dup 1) (match_dup 2))
                                  (const_int 0)))
              (set (match_operand:SI 0 "register_operand")
                   (minus:SI (match_operand:SI 1 "register_operand")
                             (match_operand:SI 2 "nonmemory_operand")))])]
  ""
)

(define_insn "subc_internal"
  [(set (match_operand:SI 0 "register_operand"                      "=D,r,r")
        (minus:SI
          (minus:SI (match_operand:SI 1 "register_operand"          " 0,0,r")
                    (match_operand:SI 2 "reg_or_am33_const_operand" " D,i,r"))
          (geu:SI (reg:CC CC_REG) (const_int 0))))
   (clobber (reg:CC CC_REG))]
  "reload_completed"
  "@
   subc %2,%0
   subc %2,%0
   subc %2,%1,%0"
  [(set_attr "isa" "*,am33,am33")]
)

(define_expand "subdi3"
  [(set (match_operand:DI 0 "register_operand" "")
        (minus:DI (match_operand:DI 1 "register_operand" "")
                  (match_operand:DI 2 "nonmemory_operand" "")))]
  ""
{
  rtx op0l, op0h, op1l, op1h, op2l, op2h;

  op0l = gen_lowpart (SImode, operands[0]);
  op1l = gen_lowpart (SImode, operands[1]);
  op2l = gen_lowpart (SImode, operands[2]);
  op0h = gen_highpart (SImode, operands[0]);
  op1h = gen_highpart (SImode, operands[1]);
  op2h = gen_highpart_mode (SImode, DImode, operands[2]);

  if (!reg_or_am33_const_operand (op2h, SImode))
    op2h = force_reg (SImode, op2h);

  emit_insn (gen_subdi3_internal (op0l, op0h, op1l, op1h, op2l, op2h));
  DONE;
})

;; As with adddi3, the use of the scratch register helps reduce the 
;; number of permutations for AM33.
;; ??? The early clobber on op0 avoids a reload bug wherein both output
;; registers are set the same.  Consider negate, where both op2 and op3
;; are 0, are csed to the same input register, and reload fails to undo
;; the cse when satisfying the matching constraints.

(define_insn_and_split "subdi3_internal"
  [(set (match_operand:SI     0 "register_operand"         "=&r, r")
        (minus:SI
          (match_operand:SI   2 "register_operand"         "  0, r")
          (match_operand:SI   4 "nonmemory_operand"        " ri,ri")))
   (set (match_operand:SI     1 "register_operand"         "=D , r")
        (minus:SI
          (minus:SI
            (match_operand:SI 3 "register_operand"         "  1, r")
            (match_operand:SI 5 "reg_or_am33_const_operand" " D,ri"))
          (ltu:SI (match_dup 2) (match_dup 4))))
   (clobber (match_scratch:SI 6                            "=X ,&r"))
   (clobber (reg:CC CC_REG))]
  ""
  "#"
  "reload_completed"
  [(const_int 0)]
{
  rtx op0l = operands[0];
  rtx op0h = operands[1];
  rtx op1l = operands[2];
  rtx op1h = operands[3];
  rtx op2l = operands[4];
  rtx op2h = operands[5];
  rtx scratch = operands[6];

  if (reg_overlap_mentioned_p (op0l, op1h))
    {
      emit_move_insn (scratch, op0l);
      op1h = scratch;
      if (reg_overlap_mentioned_p (op0l, op2h))
        op2h = scratch;
    }
  else if (reg_overlap_mentioned_p (op0l, op2h))
    {
      emit_move_insn (scratch, op0l);
      op2h = scratch;
    }

  if (!rtx_equal_p (op0l, op1l))
    {
      gcc_assert (TARGET_AM33);
      if (!REG_P (op2l))
        {
          emit_move_insn (op0l, op1l);
          op1l = op0l;
        }
    }
  emit_insn (gen_subsi3_flags (op0l, op1l, op2l));

  if (!rtx_equal_p (op0h, op1h))
    {
      gcc_assert (TARGET_AM33);
      if (!REG_P (op2h))
        {
          emit_move_insn (op0h, op1h);
          op1h = op0h;
        }
    }
  emit_insn (gen_subc_internal (op0h, op1h, op2h));
  DONE;
}
  [(set_attr "isa" "*,am33")]
)

;; The following pattern is generated by combine when it proves that one
;; of the inputs to the low-part of the double-word sub is zero, and thus
;; no carry is generated into the high-part.

(define_insn_and_split "*subdi3_degenerate"
  [(set (match_operand:SI          0 "register_operand"   "=&r,&r")
        (match_operand:SI          2 "nonmemory_operand"  "  0, 0"))
   (set (match_operand:SI          1 "register_operand"   "=r , r")
        (minus:SI (match_operand:SI 3 "register_operand"  "  1, r")
                  (match_operand:SI 4 "nonmemory_operand" " ri, r")))
   (clobber (reg:CC CC_REG))]
  ""
  "#"
  ""
  [(const_int 0)]
{
  rtx scratch = NULL_RTX;
  if (!rtx_equal_p (operands[0], operands[2]))
    {
      gcc_assert (!reg_overlap_mentioned_p (operands[0], operands[1]));
      if (reg_overlap_mentioned_p (operands[0], operands[3])
          || reg_overlap_mentioned_p (operands[0], operands[4]))
        {
          scratch = gen_reg_rtx (SImode);
          emit_move_insn (scratch, operands[2]);
        }
      else
        emit_move_insn (operands[0], operands[2]);
    }
  emit_insn (gen_subsi3 (operands[1], operands[3], operands[4]));
  if (scratch)
    emit_move_insn (operands[0], scratch);
  DONE;
})

(define_insn_and_split "negsi2"
  [(set (match_operand:SI         0 "register_operand"  "=D,&r")
        (neg:SI (match_operand:SI 1 "register_operand"  " 0, r")))
   (clobber (reg:CC CC_REG))]
  ""
  "#"
  "&& reload_completed"
  [(const_int 0)]
{
  /* Recall that twos-compliment is ones-compliment plus one.  When
     allocated in DATA_REGS this is 2+1 bytes; otherwise (for am33)
     this is 3+3 bytes.

     For AM33, it would have been possible to load zero and use the
     three-address subtract to have a total size of 3+4*N bytes for
     multiple negations, plus increased throughput.  Not attempted here.  */
     
  if (true_regnum (operands[0]) == true_regnum (operands[1]))
    {
      emit_insn (gen_one_cmplsi2 (operands[0], operands[0]));
      emit_insn (gen_addsi3 (operands[0], operands[0], const1_rtx));
    }
  else
    {
      emit_move_insn (operands[0], const0_rtx);
      emit_insn (gen_subsi3 (operands[0], operands[0], operands[1]));
    }
  DONE;
})

;; ----------------------------------------------------------------------
;; MULTIPLY INSTRUCTIONS
;; ----------------------------------------------------------------------

;; ??? Note that AM33 has a third multiply variant that puts the high part
;; into the MDRQ register, however this variant also constrains the inputs
;; to be in DATA_REGS and thus isn't as helpful as it might be considering
;; the existence of the 4-operand multiply.  Nor is there a set of divide
;; insns that use MDRQ.  Given that there is an IMM->MDRQ insn, this would
;; have been very handy for starting udivmodsi4...

(define_expand "mulsidi3"
  [(set (match_operand:DI 0 "register_operand" "")
        (mult:DI (sign_extend:DI (match_operand:SI 1 "register_operand" ""))
                 (sign_extend:DI (match_operand:SI 2 "register_operand" ""))))]
  ""
{
  emit_insn (gen_mulsidi3_internal (gen_lowpart (SImode, operands[0]),
                                    gen_highpart (SImode, operands[0]),
                                    operands[1], operands[2]));
  DONE;
})

(define_insn "mulsidi3_internal"
  [(set (match_operand:SI          0 "register_operand" "=D,r")
        (mult:SI (match_operand:SI 2 "register_operand" "%0,r")
                 (match_operand:SI 3 "register_operand" " D,r")))
   (set (match_operand:SI          1 "register_operand" "=z,r")
        (truncate:SI
          (ashiftrt:DI
            (mult:DI (sign_extend:DI (match_dup 2))
                     (sign_extend:DI (match_dup 3)))
            (const_int 32))))
   (clobber (reg:CC CC_REG))]
  ""
{
  if (which_alternative == 1)
    return "mul %2,%3,%1,%0";
  else if (TARGET_MULT_BUG)
    return "nop\;nop\;mul %3,%0";
  else
    return "mul %3,%0";
}
  [(set_attr "isa" "*,am33")
   (set (attr "timings")
        (if_then_else (eq_attr "cpu" "am34") (const_int 24) (const_int 23)))]
)

(define_expand "umulsidi3"
  [(set (match_operand:DI 0 "register_operand" "")
        (mult:DI (zero_extend:DI (match_operand:SI 1 "register_operand" ""))
                 (zero_extend:DI (match_operand:SI 2 "register_operand" ""))))
   (clobber (reg:CC CC_REG))]
  ""
{
  emit_insn (gen_umulsidi3_internal (gen_lowpart (SImode, operands[0]),
                                     gen_highpart (SImode, operands[0]),
                                     operands[1], operands[2]));
  DONE;
})

(define_insn "umulsidi3_internal"
  [(set (match_operand:SI          0 "register_operand" "=D,r")
        (mult:SI (match_operand:SI 2 "register_operand" "%0,r")
                 (match_operand:SI 3 "register_operand" " D,r")))
   (set (match_operand:SI          1 "register_operand" "=z,r")
        (truncate:SI
          (lshiftrt:DI
            (mult:DI (zero_extend:DI (match_dup 2))
                     (zero_extend:DI (match_dup 3)))
            (const_int 32))))
   (clobber (reg:CC CC_REG))]
  ""
{
  if (which_alternative == 1)
    return "mulu %2,%3,%1,%0";
  else if (TARGET_MULT_BUG)
    return "nop\;nop\;mulu %3,%0";
  else
    return "mulu %3,%0";
}
  [(set_attr "isa" "*,am33")
   (set (attr "timings")
        (if_then_else (eq_attr "cpu" "am34") (const_int 24) (const_int 23)))]
)

(define_expand "mulsi3"
  [(parallel [(set (match_operand:SI          0 "register_operand")
                   (mult:SI (match_operand:SI 1 "register_operand")
                            (match_operand:SI 2 "reg_or_am33_const_operand")))
              (clobber (match_scratch:SI      3))
              (clobber (reg:CC CC_REG))])]
  ""
)

(define_insn "*mulsi3"
  [(set (match_operand:SI          0 "register_operand"          "=D, r,r")
        (mult:SI (match_operand:SI 2 "register_operand"          "%0, 0,r")
                 (match_operand:SI 3 "reg_or_am33_const_operand" " D,ri,r")))
   (clobber (match_scratch:SI      1                             "=z, z,r"))
   (clobber (reg:CC CC_REG))]
  ""
{
  if (which_alternative == 2)
    return "mul %2,%3,%1,%0";
  else if (TARGET_MULT_BUG)
    return "nop\;nop\;mul %3,%0";
  else
    return "mul %3,%0";
}
  [(set_attr "isa" "*,am33,am33")
   (set (attr "timings")
        (if_then_else (eq_attr "cpu" "am34") (const_int 24) (const_int 23)))]
)

(define_expand "udivmodsi4"
  [(parallel [(set (match_operand:SI          0 "register_operand")
                   (udiv:SI (match_operand:SI 1 "register_operand")
                            (match_operand:SI 2 "register_operand")))
              (set (match_operand:SI          3 "register_operand")
                   (umod:SI (match_dup 1) (match_dup 2)))
              (use (const_int 0))
              (clobber (reg:CC CC_REG))])]
  ""
)

;; Note the trick to get reload to put the zero into the MDR register,
;; rather than exposing the load early and letting CSE or someone try
;; to share the zeros between division insns.  Which tends to result
;; in sequences like 0->r0->d0->mdr.

(define_insn "*udivmodsi4"
  [(set (match_operand:SI          0 "register_operand" "=D")
        (udiv:SI (match_operand:SI 2 "register_operand" " 0")
                 (match_operand:SI 3 "register_operand" " D")))
   (set (match_operand:SI          1 "register_operand" "=z")
        (umod:SI (match_dup 2) (match_dup 3)))
   (use (match_operand:SI          4 "nonmemory_operand" " 1"))
   (clobber (reg:CC CC_REG))]
  ""
  "divu %3,%0"
  [(set (attr "timings") (if_then_else (eq_attr "cpu" "am34")
                                       (const_int 3839) (const_int 4243)))]
)

(define_expand "divmodsi4"
  [(parallel [(set (match_operand:SI          0 "register_operand" "")
                   (div:SI (match_operand:SI  1 "register_operand" "")
                           (match_operand:SI  2 "register_operand" "")))
              (set (match_operand:SI          3 "register_operand" "")
                   (mod:SI (match_dup 1) (match_dup 2)))
              (use (match_dup 4))
              (clobber (reg:CC CC_REG))])]
  ""
{
  operands[4] = gen_reg_rtx (SImode);
  emit_insn (gen_ext_internal (operands[4], operands[1]));
})

;; ??? Ideally we'd represent this via shift, but it seems like adding a
;; special-case pattern for (ashiftrt x 31) is just as likely to result
;; in poor register allocation choices.
(define_insn "ext_internal"
  [(set (match_operand:SI 0 "register_operand" "=z")
        (unspec:SI [(match_operand:SI 1 "register_operand" "D")] UNSPEC_EXT))]
  ""
  "ext %1"
)

(define_insn "*divmodsi4"
  [(set (match_operand:SI          0 "register_operand" "=D")
        (div:SI (match_operand:SI  2 "register_operand" " 0")
                (match_operand:SI  3 "register_operand" " D")))
   (set (match_operand:SI          1 "register_operand" "=z")
        (mod:SI (match_dup 2) (match_dup 3)))
   (use (match_operand:SI          4 "register_operand" " 1"))
   (clobber (reg:CC CC_REG))]
  ""
  "div %3,%0";
  [(set (attr "timings") (if_then_else (eq_attr "cpu" "am34")
                                       (const_int 3839) (const_int 4243)))]
)

\f
;; ----------------------------------------------------------------------
;; AND INSTRUCTIONS
;; ----------------------------------------------------------------------

(define_insn "andsi3"
  [(set (match_operand:SI         0 "register_operand"  "=D,D,r")
        (and:SI (match_operand:SI 1 "register_operand"  "%0,0,r")
                (match_operand:SI 2 "nonmemory_operand" " i,D,r")))
   (clobber (reg:CC CC_REG))]
  ""
  "@
   and %2,%0
   and %2,%0
   and %2,%1,%0"
  [(set_attr "isa" "*,*,am33")
   (set_attr "liw" "*,op1,*")
   (set_attr "liw_op" "and")
   (set_attr "timings" "22,11,11")]
)

(define_insn "*andsi3_flags"
  [(set (reg CC_REG)
        (compare (and:SI (match_operand:SI 1 "register_operand"  "%0,0,r")
                         (match_operand:SI 2 "nonmemory_operand" " i,D,r"))
                 (const_int 0)))
   (set (match_operand:SI         0 "register_operand"  "=D,D,r")
        (and:SI (match_dup 1) (match_dup 2)))]
  "reload_completed && mn10300_match_ccmode (insn, CCZNmode)"
  "@
   and %2,%0
   and %2,%0
   and %2,%1,%0"
  [(set_attr "isa" "*,*,am33")
   (set_attr "timings" "22,11,11")]
)

;; Make sure we generate extensions instead of ANDs.

(define_split
  [(parallel [(set (match_operand:SI 0 "register_operand" "")
                   (and:SI (match_operand:SI 1 "register_operand" "")
                           (const_int 255)))
              (clobber (reg:CC CC_REG))])]
  ""
  [(set (match_dup 0) (zero_extend:SI (match_dup 1)))]
  { operands[1] = gen_lowpart (QImode, operands[1]); }
)

(define_split
  [(parallel [(set (match_operand:SI 0 "register_operand" "")
                   (and:SI (match_operand:SI 1 "register_operand" "")
                           (const_int 65535)))
              (clobber (reg:CC CC_REG))])]
  ""
  [(set (match_dup 0) (zero_extend:SI (match_dup 1)))]
  { operands[1] = gen_lowpart (HImode, operands[1]); }
)

;; Split AND by an appropriate constant into two shifts.  Recall that 
;; operations with a full 32-bit immediate require an extra cycle, so
;; this is a size optimization with no speed penalty.  This only applies
;; do DATA_REGS; the shift insns that AM33 adds are too large for a win.

(define_split
  [(parallel [(set (match_operand:SI 0 "register_operand" "")
                   (and:SI (match_dup 0)
                           (match_operand:SI 1 "const_int_operand" "")))
              (clobber (reg:CC CC_REG))])]
  "reload_completed
   && REGNO_DATA_P (true_regnum (operands[0]), 1)
   && mn10300_split_and_operand_count (operands[1]) != 0"
  [(const_int 0)]
{
  int count = mn10300_split_and_operand_count (operands[1]);
  if (count > 0)
    {
      emit_insn (gen_lshrsi3 (operands[0], operands[0], GEN_INT (count)));
      emit_insn (gen_ashlsi3 (operands[0], operands[0], GEN_INT (count)));
    }
  else
    {
      emit_insn (gen_ashlsi3 (operands[0], operands[0], GEN_INT (-count)));
      emit_insn (gen_lshrsi3 (operands[0], operands[0], GEN_INT (-count)));
    }
  DONE;
})

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

(define_insn "iorsi3"
  [(set (match_operand:SI         0 "register_operand"  "=D,D,r")
        (ior:SI (match_operand:SI 1 "register_operand"  "%0,0,r")
                (match_operand:SI 2 "nonmemory_operand" " i,D,r")))
   (clobber (reg:CC CC_REG))]
  ""
  "@
   or %2,%0
   or %2,%0
   or %2,%1,%0"
  [(set_attr "isa" "*,*,am33")
   (set_attr "liw" "*,op1,*")
   (set_attr "liw_op" "or")
   (set_attr "timings" "22,11,11")]
)

(define_insn "*iorsi3_flags"
  [(set (reg CC_REG)
        (compare (ior:SI (match_operand:SI 1 "register_operand"  "%0,0,r")
                         (match_operand:SI 2 "nonmemory_operand" " i,D,r"))
                 (const_int 0)))
   (set (match_operand:SI         0 "register_operand"  "=D,D,r")
        (ior:SI (match_dup 1) (match_dup 2)))]
  "reload_completed && mn10300_match_ccmode (insn, CCZNmode)"
  "@
   or %2,%0
   or %2,%0
   or %2,%1,%0"
  [(set_attr "isa" "*,*,am33")
   (set_attr "timings" "22,11,11")]
)

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

(define_insn "xorsi3"
  [(set (match_operand:SI         0 "register_operand"  "=D,D,r")
        (xor:SI (match_operand:SI 1 "register_operand"  "%0,0,r")
                (match_operand:SI 2 "nonmemory_operand" " i,D,r")))
   (clobber (reg:CC CC_REG))]
  ""
  "@
   xor %2,%0
   xor %2,%0
   xor %2,%1,%0"
  [(set_attr "isa" "*,*,am33")
   (set_attr "liw" "*,op1,*")
   (set_attr "liw_op" "xor")
   (set_attr "timings" "22,11,11")]
)

(define_insn "*xorsi3_flags"
  [(set (reg CC_REG)
        (compare (xor:SI (match_operand:SI 1 "register_operand"  "%0,0,r")
                         (match_operand:SI 2 "nonmemory_operand" " i,D,r"))
                 (const_int 0)))
   (set (match_operand:SI         0 "register_operand"  "=D,D,r")
        (xor:SI (match_dup 1) (match_dup 2)))]
  "reload_completed && mn10300_match_ccmode (insn, CCZNmode)"
  "@
   xor %2,%0
   xor %2,%0
   xor %2,%1,%0"
  [(set_attr "isa" "*,*,am33")
   (set_attr "timings" "22,11,11")]
)

;; ----------------------------------------------------------------------
;; NOT INSTRUCTIONS
;; ----------------------------------------------------------------------

(define_insn "one_cmplsi2"
  [(set (match_operand:SI         0 "register_operand" "=D")
        (not:SI (match_operand:SI 1 "register_operand" " 0")))
   (clobber (reg:CC CC_REG))]
  ""
  "not %0"
)

(define_insn "*one_cmplsi2_flags"
  [(set (reg CC_REG)
        (compare (not:SI (match_operand:SI 1 "register_operand" "0"))
                 (const_int 0)))
   (set (match_operand:SI         0 "register_operand" "=D")
        (not:SI (match_dup 1)))]
  "reload_completed && mn10300_match_ccmode (insn, CCZNmode)"
  "not %0"
)
\f
;; ----------------------------------------------------------------------
;; COMPARE AND BRANCH INSTRUCTIONS
;; ----------------------------------------------------------------------

;; We expand the comparison into a single insn so that it will not be split
;; up by reload.
(define_expand "cbranchsi4"
  [(set (pc)
        (if_then_else
              (match_operator                    0 "ordered_comparison_operator"
                              [(match_operand:SI 1 "register_operand")
                               (match_operand:SI 2 "nonmemory_operand")])
              (label_ref (match_operand 3 ""))
              (pc)))]
  ""
  ""
)

(define_insn_and_split "*cbranchsi4_cmp"
  [(set (pc)
        (if_then_else (match_operator           3 "ordered_comparison_operator"
                       [(match_operand:SI       0 "register_operand"  "r")
                        (match_operand:SI       1 "nonmemory_operand" "ri")])
                      (match_operand            2 "label_ref_operand" "")
                      (pc)))]
  ""
  "#"
  "reload_completed"
  [(const_int 0)]
{
  mn10300_split_cbranch (CCmode, operands[3], operands[2]);
  DONE;
})

(define_insn "cmpsi"
  [(set (reg CC_REG)
        (compare (match_operand:SI 0 "register_operand"  "r,r,r")
                 (match_operand:SI 1 "nonmemory_operand" "r,O,i")))]
  "reload_completed"
{
  /* The operands of CMP must be distinct registers.  In the case where
     we've failed to optimize the comparison of a register to itself, we
     must use another method to set the Z flag.  We can achieve this 
     effect with a BTST 0,D0.  This will not alter the contents of D0;
     the use of d0 is arbitrary; any data register would work.  */
  if (rtx_equal_p (operands[0], operands[1]))
    return "btst 0,d0";
  else
    return "cmp %1,%0";
}
  [(set_attr_alternative "timings"
     [(if_then_else (eq_attr "cpu" "am34") (const_int 11) (const_int 22))
      (if_then_else (eq_attr "cpu" "am34") (const_int 11) (const_int 22))
      (if_then_else (eq_attr "cpu" "am34") (const_int 11) (const_int 22))])
   (set_attr "liw" "either,either,*")
   (set_attr "liw_op" "cmp")]
)

(define_insn "*integer_conditional_branch"
  [(set (pc)
        (if_then_else (match_operator 0 "comparison_operator"
                        [(match_operand 2 "int_mode_flags" "")
                         (const_int 0)])
                      (label_ref (match_operand 1 "" ""))
                      (pc)))]
  "reload_completed"
  "b%b0 %1"
)

(define_insn_and_split "*cbranchsi4_btst"
  [(set (pc)
        (if_then_else
          (match_operator 3 "CCZN_comparison_operator"
            [(and:SI (match_operand:SI 0 "register_operand" "D")
                     (match_operand:SI 1 "immediate_operand" "i"))
             (const_int 0)])
          (match_operand 2 "label_ref_operand" "")
          (pc)))]
  ""
  "#"
  "reload_completed"
  [(const_int 0)]
{
  mn10300_split_cbranch (CCZNmode, operands[3], operands[2]);
  DONE;
})

(define_insn "*btstsi"
  [(set (reg:CCZN CC_REG)
        (compare:CCZN
          (and:SI (match_operand:SI 0 "register_operand" "D")
                  (match_operand:SI 1 "immediate_operand" "i"))
          (const_int 0)))]
  "reload_completed"
  "btst %1,%0"
)

(define_expand "cbranchsf4"
  [(set (pc)
      (if_then_else
            (match_operator                    0 "ordered_comparison_operator"
                            [(match_operand:SF 1 "register_operand")
                             (match_operand:SF 2 "nonmemory_operand")])
            (label_ref (match_operand 3 ""))
            (pc)))]
  "TARGET_AM33_2"
  ""
)

(define_insn_and_split "*cbranchsf4_cmp"
  [(set (pc)
        (if_then_else (match_operator            3 "ordered_comparison_operator"
                        [(match_operand:SF       0 "register_operand"  "f")
                         (match_operand:SF       1 "nonmemory_operand" "fF")])
                      (match_operand             2 "label_ref_operand" "")
                      (pc)))
   ]
  "TARGET_AM33_2"
  "#"
  "&& reload_completed"
  [(const_int 0)]
{
  mn10300_split_cbranch (CC_FLOATmode, operands[3], operands[2]);
  DONE;
})

(define_insn "*am33_cmpsf"
  [(set (reg:CC_FLOAT CC_REG)
        (compare:CC_FLOAT (match_operand:SF 0 "register_operand"  "f")
                          (match_operand:SF 1 "nonmemory_operand" "fF")))]
  "TARGET_AM33_2 && reload_completed"
  "fcmp %1, %0"
  [(set (attr "timings") (if_then_else (eq_attr "cpu" "am34")
                                       (const_int 17) (const_int 25)))]
)

(define_insn "*float_conditional_branch"
  [(set (pc)
        (if_then_else (match_operator 0 "comparison_operator"
                                      [(reg:CC_FLOAT CC_REG) (const_int 0)])
                      (label_ref (match_operand 1 "" ""))
                      (pc)))]
  "TARGET_AM33_2 && reload_completed"
  "fb%b0 %1"
  [(set (attr "timings") (if_then_else (eq_attr "cpu" "am34")
                                       (const_int 44) (const_int 33)))]
)

;; Unconditional and other jump instructions.

(define_insn "jump"
  [(set (pc)
        (label_ref (match_operand 0 "" "")))]
  ""
  "jmp %l0"
  [(set (attr "timings") (if_then_else (eq_attr "cpu" "am34")
                                       (const_int 11) (const_int 44)))]
)

(define_insn "indirect_jump"
  [(set (pc) (match_operand:SI 0 "register_operand" "a"))]
  ""
  "jmp (%0)"
  [(set (attr "timings") (if_then_else (eq_attr "cpu" "am34")
                                       (const_int 11) (const_int 33)))]
)

(define_expand "builtin_setjmp_receiver"
  [(match_operand 0 "" "")]
  "flag_pic"
{
  emit_insn (gen_load_pic ());
  DONE;
})

(define_expand "casesi"
  [(match_operand:SI 0 "register_operand")
   (match_operand:SI 1 "immediate_operand")
   (match_operand:SI 2 "immediate_operand")
   (match_operand 3 "" "") (match_operand 4 "")]
  ""
{
  rtx table = gen_reg_rtx (SImode);
  rtx index = gen_reg_rtx (SImode);
  rtx addr = gen_reg_rtx (Pmode);
  rtx test;

  emit_move_insn (table, gen_rtx_LABEL_REF (VOIDmode, operands[3]));
  emit_insn (gen_addsi3 (index, operands[0], GEN_INT (- INTVAL (operands[1]))));
  test = gen_rtx_fmt_ee (GTU, VOIDmode, index, operands[2]);
  emit_jump_insn (gen_cbranchsi4 (test, index, operands[2], operands[4]));
 
  emit_insn (gen_ashlsi3 (index, index, const2_rtx));
  emit_move_insn (addr, gen_rtx_MEM (SImode,
                                     gen_rtx_PLUS (SImode, table, index)));
  if (flag_pic)
    emit_insn (gen_addsi3 (addr, addr, table));

  emit_jump_insn (gen_tablejump (addr, operands[3]));
  DONE;
})

(define_insn "tablejump"
  [(set (pc) (match_operand:SI 0 "register_operand" "a"))
   (use (label_ref (match_operand 1 "" "")))]
  ""
  "jmp (%0)"
  [(set (attr "timings") (if_then_else (eq_attr "cpu" "am34")
                                       (const_int 11) (const_int 33)))]
)

;; Call subroutine with no return value.

(define_expand "call"
  [(call (match_operand:QI 0 "general_operand")
         (match_operand:SI 1 "general_operand"))]
  ""
{
  rtx fn = XEXP (operands[0], 0);

  if (flag_pic && GET_CODE (fn) == SYMBOL_REF)
    {
      if (MN10300_GLOBAL_P (fn))
        {
          /* The PLT code won't run on AM30, but then, there's no
             shared library support for AM30 either, so we just assume
             the linker is going to adjust all @PLT relocs to the
             actual symbols.  */
          emit_use (pic_offset_table_rtx);
          fn = gen_rtx_UNSPEC (SImode, gen_rtvec (1, fn), UNSPEC_PLT);
        }
      else
        fn = gen_rtx_UNSPEC (SImode, gen_rtvec (1, fn), UNSPEC_PIC);
    }
  if (! call_address_operand (fn, VOIDmode))
    fn = force_reg (SImode, fn);

  XEXP (operands[0], 0) = fn;
})

(define_insn "*call_internal"
  [(call (mem:QI (match_operand:SI 0 "call_address_operand" "a,S"))
         (match_operand:SI 1 "" ""))]
  ""
  "@
   calls %C0
   call %C0,[],0"
  [(set_attr_alternative "timings"
                         [(if_then_else (eq_attr "cpu" "am34")
                                        (const_int 33) (const_int 44))
                          (if_then_else (eq_attr "cpu" "am34")
                                        (const_int 55) (const_int 33))
                         ])
  ]
)

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

(define_expand "call_value"
  [(set (match_operand 0 "")
        (call (match_operand:QI 1 "general_operand")
              (match_operand:SI 2 "general_operand")))]
  ""
{
  rtx fn = XEXP (operands[1], 0);

  if (flag_pic && GET_CODE (fn) == SYMBOL_REF)
    {
      if (MN10300_GLOBAL_P (fn))
        {
          /* The PLT code won't run on AM30, but then, there's no
             shared library support for AM30 either, so we just assume
             the linker is going to adjust all @PLT relocs to the
             actual symbols.  */
          emit_use (pic_offset_table_rtx);
          fn = gen_rtx_UNSPEC (SImode, gen_rtvec (1, fn), UNSPEC_PLT);
        }
      else
        fn = gen_rtx_UNSPEC (SImode, gen_rtvec (1, fn), UNSPEC_PIC);
    }
  if (! call_address_operand (fn, VOIDmode))
    fn = force_reg (SImode, fn);

  XEXP (operands[1], 0) = fn;
})

(define_insn "call_value_internal"
  [(set (match_operand 0 "" "")
        (call (mem:QI (match_operand:SI 1 "call_address_operand" "a,S"))
              (match_operand:SI 2 "" "")))]
  ""
  "@
   calls %C1
   call %C1,[],0"
  [(set_attr_alternative "timings"
                         [(if_then_else (eq_attr "cpu" "am34")
                                        (const_int 33) (const_int 44))
                          (if_then_else (eq_attr "cpu" "am34")
                                        (const_int 55) (const_int 33))
                         ])
  ]
)

(define_expand "untyped_call"
  [(parallel [(call (match_operand 0 "")
                    (const_int 0))
              (match_operand 1 "")
              (match_operand 2 "")])]
  ""
{
  int i;

  emit_call_insn (gen_call (operands[0], const0_rtx));

  for (i = 0; i < XVECLEN (operands[2], 0); i++)
    {
      rtx set = XVECEXP (operands[2], 0, i);
      emit_move_insn (SET_DEST (set), SET_SRC (set));
    }
  DONE;
})

(define_insn "nop"
  [(const_int 0)]
  ""
  "nop"
)
\f
;; ----------------------------------------------------------------------
;; EXTEND INSTRUCTIONS
;; ----------------------------------------------------------------------

(define_insn "zero_extendqisi2"
  [(set (match_operand:SI 0 "register_operand"      "=D,D,r")
        (zero_extend:SI
         (match_operand:QI 1 "nonimmediate_operand" " 0,m,r")))]
  ""
  "@
   extbu %0
   movbu %1,%0
   extbu %1,%0"
  [(set_attr "isa" "*,*,am33")
   (set_attr_alternative "timings"
                 [(const_int 11)
                  (if_then_else (eq_attr "cpu" "am34")
                                (const_int 13) (const_int 24))
                  (const_int 11)
                 ])]
)

(define_insn "zero_extendhisi2"
  [(set (match_operand:SI 0 "register_operand"      "=D,D,r")
        (zero_extend:SI
         (match_operand:HI 1 "nonimmediate_operand" " 0,m,r")))]
  ""
  "@
   exthu %0
   movhu %1,%0
   exthu %1,%0"
  [(set_attr "isa" "*,*,am33")
   (set_attr_alternative "timings"
                 [(const_int 11)
                  (if_then_else (eq_attr "cpu" "am34")
                                (const_int 13) (const_int 24))
                  (const_int 11)])]
)

(define_insn "extendqisi2"
  [(set (match_operand:SI 0 "register_operand" "=D,r")
        (sign_extend:SI
         (match_operand:QI 1 "register_operand" "0,r")))]
  ""
  "@
   extb %0
   extb %1,%0"
  [(set_attr "isa" "*,am33")]
)

(define_insn "extendhisi2"
  [(set (match_operand:SI 0 "register_operand" "=D,r")
        (sign_extend:SI
         (match_operand:HI 1 "register_operand" "0,r")))]
  ""
  "@
   exth %0
   exth %1,%0"
  [(set_attr "isa" "*,am33")]
)
\f
;; ----------------------------------------------------------------------
;; SHIFTS
;; ----------------------------------------------------------------------

(define_insn "ashlsi3"
  [(set (match_operand:SI  0 "register_operand"   "=r,D,d,d,D,D,D,r")
        (ashift:SI
          (match_operand:SI 1 "register_operand"  " 0,0,0,0,0,0,0,r")
          (match_operand:QI 2 "nonmemory_operand" " J,K,M,L,D,O,i,r")))
   (clobber (reg:CC CC_REG))]
  ""
  "@
   add %0,%0
   asl2 %0
   asl2 %0\;add %0,%0
   asl2 %0\;asl2 %0
   asl %S2,%0
   asl %S2,%0
   asl %S2,%0
   asl %2,%1,%0"
  [(set_attr "isa" "*,*,*,*,*,*,*,am33")
   (set_attr "liw" "op2,op2,op2,op2,op2,op2,*,*")
   (set_attr "liw_op" "asl")
   (set_attr "timings" "11,11,22,22,11,11,11,11")]
)

(define_insn "lshrsi3"
  [(set (match_operand:SI  0 "register_operand"  "=D,D,D,r")
        (lshiftrt:SI
          (match_operand:SI 1 "register_operand"  "0,0,0,r")
          (match_operand:QI 2 "nonmemory_operand" "D,O,i,r")))
   (clobber (reg:CC CC_REG))]
  ""
  "@
   lsr %S2,%0
   lsr %S2,%0
   lsr %S2,%0
   lsr %2,%1,%0"
  [(set_attr "isa" "*,*,*,am33")
   (set_attr "liw" "op2,op2,*,*")
   (set_attr "liw_op" "lsr")]
)

(define_insn "ashrsi3"
  [(set (match_operand:SI  0 "register_operand"  "=D,D,D,r")
        (ashiftrt:SI
          (match_operand:SI 1 "register_operand"  "0,0,0,r")
          (match_operand:QI 2 "nonmemory_operand" "D,O,i,r")))
   (clobber (reg:CC CC_REG))]
  ""
  "@
   asr %S2,%0
   asr %S2,%0
   asr %S2,%0
   asr %2,%1,%0"
  [(set_attr "isa" "*,*,*,am33")
   (set_attr "liw" "op2,op2,*,*")
   (set_attr "liw_op" "asr")]
)

;; ----------------------------------------------------------------------
;; MISCELLANEOUS
;; ----------------------------------------------------------------------

;; Note the use of the (const_int 0) when generating the insn that matches
;; the bsch pattern.  This ensures that the destination register is
;; initialised with 0 which will make the BSCH instruction set searching
;; at bit 31.
;;
;; The XOR in the instruction sequence below is there because the BSCH
;; instruction returns the bit number of the highest set bit and we want
;; the number of zero bits above that bit.  The AM33 does not have a
;; reverse subtraction instruction, but we can use a simple xor instead
;; since we know that the top 27 bits are clear.
(define_expand "clzsi2"
  [(parallel [(set (match_operand:SI 0 "register_operand")
                   (unspec:SI [(match_operand:SI 1 "register_operand")
                               (const_int 0)] UNSPEC_BSCH))
              (clobber (reg:CC CC_REG))])
   (parallel [(set (match_dup 0)
                   (xor:SI (match_dup 0)
                           (const_int 31)))
              (clobber (reg:CC CC_REG))])]
  "TARGET_AM33"
)

(define_insn "*bsch"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (unspec:SI [(match_operand:SI 1 "register_operand" "r")
                    (match_operand:SI 2 "nonmemory_operand" "0")]
                   UNSPEC_BSCH))
   (clobber (reg:CC CC_REG))]
  "TARGET_AM33"
  "bsch %1, %0"
)

;; ----------------------------------------------------------------------
;; FP INSTRUCTIONS
;; ----------------------------------------------------------------------

(define_insn "abssf2"
  [(set (match_operand:SF         0 "register_operand" "=f,f")
        (abs:SF (match_operand:SF 1 "register_operand" "0,?f")))]
  "TARGET_AM33_2"
  "@
   fabs %0
   fabs %1, %0"
  [(set (attr "timings") (if_then_else (eq_attr "cpu" "am34")
                                       (const_int 17) (const_int 14)))]
)

(define_insn "negsf2"
  [(set (match_operand:SF         0 "register_operand" "=f,f")
        (neg:SF (match_operand:SF 1 "register_operand" "0,?f")))]
  "TARGET_AM33_2"
  "@
   fneg %0
   fneg %1, %0"
  [(set (attr "timings") (if_then_else (eq_attr "cpu" "am34")
                                       (const_int 17) (const_int 14)))]
)

(define_expand "sqrtsf2"
  [(set (match_operand:SF 0 "register_operand" "")
        (sqrt:SF (match_operand:SF 1 "register_operand" "")))]
  "TARGET_AM33_2 && flag_unsafe_math_optimizations"
{
  rtx scratch = gen_reg_rtx (SFmode);
  emit_insn (gen_rsqrtsf2 (scratch, operands[1], CONST1_RTX (SFmode)));
  emit_insn (gen_divsf3 (operands[0], force_reg (SFmode, CONST1_RTX (SFmode)),
                         scratch));
  DONE;
})

(define_insn "rsqrtsf2"
  [(set (match_operand:SF                  0 "register_operand" "=f,f")
        (div:SF (match_operand:SF          2 "const_1f_operand" "F,F")
                (sqrt:SF (match_operand:SF 1 "register_operand" "0,?f"))))
   (clobber (reg:CC_FLOAT CC_REG))]
  "TARGET_AM33_2"
  "@
   frsqrt %0
   frsqrt %1, %0"
  [(set (attr "timings") (if_then_else (eq_attr "cpu" "am34")
                                       (const_int 4753) (const_int 2327)))]
)

(define_insn "addsf3"
  [(set (match_operand:SF          0 "register_operand" "=f,f")
        (plus:SF (match_operand:SF 1 "register_operand" "%0,f")
                 (match_operand:SF 2 "nonmemory_operand" "f,?fF")))
   (clobber (reg:CC_FLOAT CC_REG))]
  "TARGET_AM33_2"
  "@
   fadd %2, %0
   fadd %2, %1, %0"
  [(set_attr_alternative "timings"
                         [(if_then_else (eq_attr "cpu" "am34")
                                        (const_int 17) (const_int 14))
                          (if_then_else (eq_attr "cpu" "am34")
                                        (const_int 17) (const_int 25))
                         ])]
)

(define_insn "subsf3"
  [(set (match_operand:SF           0 "register_operand" "=f,f")
        (minus:SF (match_operand:SF 1 "register_operand" "0,f")
                  (match_operand:SF 2 "nonmemory_operand" "f,?fF")))
   (clobber (reg:CC_FLOAT CC_REG))]
  "TARGET_AM33_2"
  "@
   fsub %2, %0
   fsub %2, %1, %0"
  [(set_attr_alternative "timings"
                         [(if_then_else (eq_attr "cpu" "am34")
                                        (const_int 17) (const_int 14))
                          (if_then_else (eq_attr "cpu" "am34")
                                        (const_int 17) (const_int 25))
                         ])]
)

(define_insn "mulsf3"
  [(set (match_operand:SF          0 "register_operand" "=f,f")
        (mult:SF (match_operand:SF 1 "register_operand" "%0,f")
                 (match_operand:SF 2 "nonmemory_operand" "f,?fF")))
  (clobber (reg:CC_FLOAT CC_REG))
  ]
  "TARGET_AM33_2"
  "@
   fmul %2, %0
   fmul %2, %1, %0"
  [(set_attr_alternative "timings"
                         [(if_then_else (eq_attr "cpu" "am34")
                                        (const_int 17) (const_int 14))
                          (if_then_else (eq_attr "cpu" "am34")
                                        (const_int 17) (const_int 25))
                         ])]
)

(define_insn "divsf3"
  [(set (match_operand:SF         0 "register_operand" "=f,f")
        (div:SF (match_operand:SF 1 "register_operand"  "0,f")
                (match_operand:SF 2 "nonmemory_operand" "f,?fF")))
   (clobber (reg:CC_FLOAT CC_REG))]
  "TARGET_AM33_2"
  "@
   fdiv %2, %0
   fdiv %2, %1, %0"
  [(set_attr_alternative "timings"
                         [(if_then_else (eq_attr "cpu" "am34")
                                        (const_int 2531) (const_int 1216))
                          (if_then_else (eq_attr "cpu" "am34")
                                        (const_int 2531) (const_int 1317))
                         ])]
)

(define_insn "fmasf4"
  [(set (match_operand:SF         0 "register_operand" "=c")
        (fma:SF (match_operand:SF 1 "register_operand" "f")
                (match_operand:SF 2 "register_operand" "f")
                (match_operand:SF 3 "register_operand" "f")))
   (clobber (reg:CC_FLOAT CC_REG))
  ]
  "TARGET_AM33_2"
  "fmadd %1, %2, %3, %0"
  [(set (attr "timings") (if_then_else (eq_attr "cpu" "am34")
                                       (const_int 17) (const_int 24)))]
)

(define_insn "fmssf4"
  [(set (match_operand:SF                 0 "register_operand" "=c")
        (fma:SF (match_operand:SF         1 "register_operand" "f")
                (match_operand:SF         2 "register_operand" "f")
                (neg:SF (match_operand:SF 3 "register_operand" "f"))))
   (clobber (reg:CC_FLOAT CC_REG))
  ]
  "TARGET_AM33_2"
  "fmsub %1, %2, %3, %0"
  [(set (attr "timings") (if_then_else (eq_attr "cpu" "am34")
                                       (const_int 17) (const_int 24)))]
)

(define_insn "fnmasf4"
  [(set (match_operand:SF                 0 "register_operand" "=c")
        (fma:SF (neg:SF (match_operand:SF 1 "register_operand" "f"))
                (match_operand:SF         2 "register_operand" "f")
                (match_operand:SF         3 "register_operand" "f")))
   (clobber (reg:CC_FLOAT CC_REG))
  ]
  "TARGET_AM33_2"
  "fnmadd %1, %2, %3, %0"
  [(set (attr "timings") (if_then_else (eq_attr "cpu" "am34")
                                       (const_int 17) (const_int 24)))]
)

(define_insn "fnmssf4"
  [(set (match_operand:SF                 0 "register_operand" "=c")
        (fma:SF (neg:SF (match_operand:SF 1 "register_operand" "f"))
                (match_operand:SF         2 "register_operand" "f")
                (neg:SF (match_operand:SF 3 "register_operand" "f"))))
   (clobber (reg:CC_FLOAT CC_REG))
  ]
  "TARGET_AM33_2"
  "fnmsub %1, %2, %3, %0"
  [(set (attr "timings") (if_then_else (eq_attr "cpu" "am34")
                                       (const_int 17) (const_int 24)))]
)

;; ----------------------------------------------------------------------
;; PROLOGUE/EPILOGUE
;; ----------------------------------------------------------------------
(define_expand "prologue"
  [(const_int 0)]
  ""
  { mn10300_expand_prologue (); DONE; }
)

(define_expand "epilogue"
  [(return)]
  ""
  { mn10300_expand_epilogue (); DONE; }
)

(define_insn "return"
  [(return)]
  "mn10300_can_use_rets_insn ()"
{
  /* The RETF insn is 4 cycles faster than RETS, though 1 byte larger.  */
  if (optimize_insn_for_speed_p () && mn10300_can_use_retf_insn ())
    return "retf [],0";
  else
    return "rets";
})

(define_insn "return_ret"
  [(return)
   (use (match_operand:SI 0 "const_int_operand" ""))]
  ""
{
  /* The RETF insn is up to 3 cycles faster than RET.  */
  fputs ((mn10300_can_use_retf_insn () ? "\tretf " : "\tret "), asm_out_file);
  mn10300_print_reg_list (asm_out_file, mn10300_get_live_callee_saved_regs (NULL));
  fprintf (asm_out_file, ",%d\n", (int) INTVAL (operands[0]));
  return "";
})

;; This instruction matches one generated by mn10300_gen_multiple_store()
(define_insn "store_movm"
  [(match_parallel 0 "mn10300_store_multiple_operation"
    [(set (reg:SI SP_REG) (plus:SI (reg:SI SP_REG) (match_operand 1 "" "")))])]
  ""
{
  fputs ("\tmovm ", asm_out_file);
  mn10300_print_reg_list (asm_out_file,
                          mn10300_store_multiple_regs (operands[0]));
  fprintf (asm_out_file, ",(sp)\n");
  return "";
}
  ;; Assume that no more than 8 registers will be pushed.
  [(set (attr "timings") (if_then_else (eq_attr "cpu" "am34")
                                       (const_int 99) (const_int 88)))]
)

(define_expand "load_pic"
  [(const_int 0)]
  "flag_pic"
{
  if (TARGET_AM33)
    emit_insn (gen_am33_load_pic (pic_offset_table_rtx));
  else if (mn10300_frame_size () == 0)
    emit_insn (gen_mn10300_load_pic0 (pic_offset_table_rtx));
  else
    emit_insn (gen_mn10300_load_pic1 (pic_offset_table_rtx));
  DONE;
})

(define_insn "am33_load_pic"
  [(set (match_operand:SI 0 "register_operand" "=a")
        (unspec:SI [(const_int 0)] UNSPEC_GOT))
   (clobber (reg:CC CC_REG))]
  "TARGET_AM33"
{
  operands[1] = gen_rtx_SYMBOL_REF (VOIDmode, GOT_SYMBOL_NAME);
  return ".LPIC%=:\;mov pc,%0\;add %1-(.LPIC%=-.),%0";
}
  [(set_attr "timings" "33")]
)

;; Load pic register with push/pop of stack.
(define_insn "mn10300_load_pic0"
  [(set (match_operand:SI 0 "register_operand" "=a")
        (unspec:SI [(const_int 0)] UNSPEC_GOT))
   (clobber (reg:SI MDR_REG))
   (clobber (reg:CC CC_REG))]
  ""
{
  operands[1] = gen_rtx_SYMBOL_REF (VOIDmode, GOT_SYMBOL_NAME);
  return ("add -4,sp\;"
          "calls .LPIC%=\n"
          ".LPIC%=:\;"
          "movm (sp),[%0]\;"
          "add %1-(.LPIC%=-.),%0");
}
  [(set_attr "timings" "88")]
)

;; Load pic register re-using existing stack space.
(define_insn "mn10300_load_pic1"
  [(set (match_operand:SI 0 "register_operand" "=a")
        (unspec:SI [(const_int 0)] UNSPEC_GOT))
   (clobber (mem:SI (reg:SI SP_REG)))
   (clobber (reg:SI MDR_REG))
   (clobber (reg:CC CC_REG))]
  ""
{
  operands[1] = gen_rtx_SYMBOL_REF (VOIDmode, GOT_SYMBOL_NAME);
  return ("calls .LPIC%=\n"
          ".LPIC%=:\;"
          "mov (sp),%0\;"
          "add %1-(.LPIC%=-.),%0");
}
  [(set_attr "timings" "66")]
)

;; The mode on operand 3 has been deliberately omitted because it
;; can be either SI (for arithmetic operations) or QI (for shifts).
(define_insn "liw"
  [(set (match_operand:SI             0 "register_operand" "=r")
        (unspec:SI [(match_dup 0)
                    (match_operand    2 "liw_operand"       "rO")
                    (match_operand:SI 4 "const_int_operand" "")]
                   UNSPEC_LIW))
   (set (match_operand:SI             1 "register_operand" "=r")
        (unspec:SI [(match_dup 1)
                    (match_operand    3 "liw_operand"       "rO")
                    (match_operand:SI 5 "const_int_operand" "")]
                   UNSPEC_LIW))]
  "TARGET_ALLOW_LIW"
  "%W4_%W5 %2, %0, %3, %1"
  [(set (attr "timings") (if_then_else (eq_attr "cpu" "am34")
                                       (const_int 13) (const_int 12)))]
)

;; The mode on operand 1 has been deliberately omitted because it
;; can be either SI (for arithmetic operations) or QI (for shifts).
(define_insn "cmp_liw"
  [(set (reg:CC CC_REG)
        (compare:CC (match_operand:SI 2 "register_operand" "r")
                    (match_operand    3 "liw_operand"      "rO")))
   (set (match_operand:SI             0 "register_operand" "=r")
        (unspec:SI [(match_dup 0)
                    (match_operand    1 "liw_operand"       "rO")
                    (match_operand:SI 4 "const_int_operand" "")]
                   UNSPEC_LIW))]
  "TARGET_ALLOW_LIW"
  "cmp_%W4 %3, %2, %1, %0"
  [(set (attr "timings") (if_then_else (eq_attr "cpu" "am34")
                                       (const_int 13) (const_int 12)))]
)

(define_insn "liw_cmp"
  [(set (match_operand:SI             0 "register_operand" "=r")
        (unspec:SI [(match_dup 0)
                    (match_operand    1 "liw_operand"      "rO")
                    (match_operand:SI 4 "const_int_operand" "")]
                   UNSPEC_LIW))
   (set (reg:CC CC_REG)
        (compare:CC (match_operand:SI 2 "register_operand" "r")
                    (match_operand    3 "liw_operand"      "rO")))]
  "TARGET_ALLOW_LIW"
  "%W4_cmp %1, %0, %3, %2"
  [(set (attr "timings") (if_then_else (eq_attr "cpu" "am34")
                                       (const_int 13) (const_int 12)))]
)

;; Note - in theory the doloop patterns could be used here to express
;; the SETLB and Lcc instructions.  In practice this does not work because
;; the acceptable forms of the doloop patterns do not include UNSPECs
;; and without them gcc's basic block reordering code can duplicate the
;; doloop_end pattern, leading to bogus multiple decrements of the loop
;; counter. 

(define_insn "setlb"
  [(unspec [(const_int 0)] UNSPEC_SETLB)]
  "TARGET_AM33 && TARGET_ALLOW_SETLB"
  "setlb"
)

(define_insn "Lcc"
  [(set (pc)
        (if_then_else (match_operator 0 "comparison_operator"
                      [(reg:CC CC_REG) (const_int 0)])
                      (label_ref (match_operand 1 "" ""))
                      (pc)))
   (unspec [(const_int 1)] UNSPEC_SETLB)]
  "TARGET_AM33 && TARGET_ALLOW_SETLB"
  "L%b0 # loop back to: %1"
)

(define_insn "FLcc"
  [(set (pc)
        (if_then_else (match_operator 0 "comparison_operator"
                      [(reg:CC_FLOAT CC_REG) (const_int 0)])
                      (label_ref (match_operand 1 "" ""))
                      (pc)))
   (unspec [(const_int 2)] UNSPEC_SETLB)]
  "TARGET_AM33_2 && TARGET_ALLOW_SETLB"
  "FL%b0 # loop back to: %1"
  [(set (attr "timings") (if_then_else (eq_attr "cpu" "am34") (const_int 44) (const_int 11)))]
)