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[thirdparty/gcc.git] / gcc / config / m32r / m32r.md

;; Machine description of the Renesas M32R cpu for GNU C compiler
;; Copyright (C) 1996-2020 Free Software Foundation, Inc.

;; 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/>.

;; See file "rtl.def" for documentation on define_insn, match_*, et. al.
\f
;; UNSPEC_VOLATILE usage
(define_constants
  [(UNSPECV_BLOCKAGE            0)
   (UNSPECV_FLUSH_ICACHE        1)])

;; UNSPEC usage
(define_constants
  [(UNSPEC_LOAD_SDA_BASE        2)
   (UNSPEC_SET_CBIT             3)
   (UNSPEC_PIC_LOAD_ADDR        4)
   (UNSPEC_GET_PC               5)
   (UNSPEC_GOTOFF               6)
   ])

;; Insn type.  Used to default other attribute values.
(define_attr "type"
  "int2,int4,load2,load4,load8,store2,store4,store8,shift2,shift4,mul2,div4,uncond_branch,branch,call,multi,misc"
  (const_string "misc"))

;; Length in bytes.
(define_attr "length" ""
  (cond [(eq_attr "type" "int2,load2,store2,shift2,mul2")
         (const_int 2)

         (eq_attr "type" "int4,load4,store4,shift4,div4")
         (const_int 4)

         (eq_attr "type" "multi")
         (const_int 8)

         (eq_attr "type" "uncond_branch,branch,call")
         (const_int 4)]

         (const_int 4)))

;; The length here is the length of a single asm.  Unfortunately it might be
;; 2 or 4 so we must allow for 4.  That's ok though.
(define_asm_attributes
  [(set_attr "length" "4")
   (set_attr "type" "multi")])

;; Whether an instruction is short (16-bit) or long (32-bit).
(define_attr "insn_size" "short,long"
  (if_then_else (eq_attr "type" "int2,load2,store2,shift2,mul2")
                (const_string "short")
                (const_string "long")))

;; The target CPU we're compiling for.
(define_attr "cpu" "m32r,m32r2,m32rx"
  (cond [(match_test "TARGET_M32RX")
             (const_string "m32rx")
         (match_test "TARGET_M32R2")
             (const_string "m32r2")]
    (const_string "m32r")))

;; Defines the pipeline where an instruction can be executed on.
;; For the M32R, a short instruction can execute one of the two pipes.
;; For the M32Rx, the restrictions are modelled in the second
;;  condition of this attribute definition.
(define_attr "m32r_pipeline" "either,s,o,long"
  (cond [(and (eq_attr "cpu" "m32r")
              (eq_attr "insn_size" "short"))
             (const_string "either")
         (eq_attr "insn_size" "!short")
             (const_string "long")]
         (cond [(eq_attr "type" "int2")
                   (const_string "either")
                (eq_attr "type" "load2,store2,shift2,uncond_branch,branch,call")
                   (const_string "o")
                (eq_attr "type" "mul2")
                   (const_string "s")]
         (const_string "long"))))
\f
;; ::::::::::::::::::::
;; ::
;; :: Pipeline description
;; ::
;; ::::::::::::::::::::

;; This model is based on Chapter 2, Appendix 3 and Appendix 4 of the
;; "M32R-FPU Software Manual", Revision 1.01, plus additional information
;; obtained by our best friend and mine, Google.
;;
;; The pipeline is modelled as a fetch unit, and a core with a memory unit,
;; two execution units, where "fetch" models IF and D, "memory" for MEM1
;; and MEM2, and "EXEC" for E, E1, E2, EM, and EA.  Writeback and
;; bypasses are not modelled.
(define_automaton "m32r")

;; We pretend there are two short (16 bits) instruction fetchers.  The
;; "s" short fetcher cannot be reserved until the "o" short fetcher is
;; reserved.  Some instructions reserve both the left and right fetchers.
;; These fetch units are a hack to get GCC to better pack the instructions
;; for the M32Rx processor, which has two execution pipes.
;;
;; In reality there is only one decoder, which can decode either two 16-bit
;; instructions, or a single 32-bit instruction.
;;
;; Note, "fetch" models both the IF and the D pipeline stages.
;;
;; The m32rx core has two execution pipes.  We name them o_E and s_E.
;; In addition, there's a memory unit.

(define_cpu_unit "o_IF,s_IF,o_E,s_E,memory" "m32r")

;; Prevent the s pipe from being reserved before the o pipe.
(absence_set "s_IF" "o_IF")
(absence_set "s_E"  "o_E")

;; On the M32Rx, long instructions execute on both pipes, so reserve
;; both fetch slots and both pipes.
(define_reservation "long_IF" "o_IF+s_IF")
(define_reservation "long_E" "o_E+s_E")

;; ::::::::::::::::::::

;; Simple instructions do 4 stages: IF D E WB.  WB is not modelled.
;; Hence, ready latency is 1.
(define_insn_reservation "short_left" 1
  (and (eq_attr "m32r_pipeline" "o")
       (and (eq_attr "insn_size" "short")
            (eq_attr "type" "!load2")))
  "o_IF,o_E")

(define_insn_reservation "short_right" 1
  (and (eq_attr "m32r_pipeline" "s")
       (and (eq_attr "insn_size" "short")
            (eq_attr "type" "!load2")))
  "s_IF,s_E")

(define_insn_reservation "short_either" 1
  (and (eq_attr "m32r_pipeline" "either")
       (and (eq_attr "insn_size" "short")
            (eq_attr "type" "!load2")))
  "o_IF|s_IF,o_E|s_E")

(define_insn_reservation "long_m32r" 1
  (and (eq_attr "cpu" "m32r")
       (and (eq_attr "insn_size" "long")
            (eq_attr "type" "!load4,load8")))
  "long_IF,long_E")

(define_insn_reservation "long_m32rx" 2
  (and (eq_attr "m32r_pipeline" "long")
       (and (eq_attr "insn_size" "long")
            (eq_attr "type" "!load4,load8")))
  "long_IF,long_E")

;; Load/store instructions do 6 stages: IF D E MEM1 MEM2 WB.
;; MEM1 may require more than one cycle depending on locality.  We
;; optimistically assume all memory is nearby, i.e. MEM1 takes only
;; one cycle.  Hence, ready latency is 3.

;; The M32Rx can do short load/store only on the left pipe.
(define_insn_reservation "short_load_left" 3
  (and (eq_attr "m32r_pipeline" "o")
       (and (eq_attr "insn_size" "short")
            (eq_attr "type" "load2")))
  "o_IF,o_E,memory*2")

(define_insn_reservation "short_load" 3
  (and (eq_attr "m32r_pipeline" "either")
       (and (eq_attr "insn_size" "short")
            (eq_attr "type" "load2")))
  "s_IF|o_IF,s_E|o_E,memory*2")

(define_insn_reservation "long_load" 3
  (and (eq_attr "cpu" "m32r")
       (and (eq_attr "insn_size" "long")
            (eq_attr "type" "load4,load8")))
  "long_IF,long_E,memory*2")

(define_insn_reservation "long_load_m32rx" 3
  (and (eq_attr "m32r_pipeline" "long")
       (eq_attr "type" "load4,load8"))
  "long_IF,long_E,memory*2")

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

;; Expand prologue as RTL
(define_expand "prologue"
  [(const_int 1)]
  ""
  "
{
  m32r_expand_prologue ();
  DONE;
}")

;; Expand epilogue as RTL
(define_expand "epilogue"
  [(return)]
  ""
  "
{
  m32r_expand_epilogue ();
  emit_jump_insn (gen_return_normal ());
  DONE;
}")
\f
;; Move instructions.
;;
;; For QI and HI moves, the register must contain the full properly
;; sign-extended value.  nonzero_bits assumes this [otherwise
;; SHORT_IMMEDIATES_SIGN_EXTEND must be used, but the comment for it
;; says it's a kludge and the .md files should be fixed instead].

(define_expand "movqi"
  [(set (match_operand:QI 0 "general_operand" "")
        (match_operand:QI 1 "general_operand" ""))]
  ""
  "
{
  /* Fixup PIC cases.  */
  if (flag_pic)
    {
      if (symbolic_operand (operands[1], QImode))
        {
          if (reload_in_progress || reload_completed)
            operands[1] = m32r_legitimize_pic_address (operands[1], operands[0]);
          else
            operands[1] = m32r_legitimize_pic_address (operands[1], NULL_RTX);
        }
    }

  /* Everything except mem = const or mem = mem can be done easily.
     Objects in the small data area are handled too.  */

  if (MEM_P (operands[0]))
    operands[1] = force_reg (QImode, operands[1]);
}")

(define_insn "*movqi_insn"
  [(set (match_operand:QI 0 "move_dest_operand" "=r,r,r,r,r,T,m")
        (match_operand:QI 1 "move_src_operand" "r,I,JQR,T,m,r,r"))]
  "register_operand (operands[0], QImode) || register_operand (operands[1], QImode)"
  "@
   mv %0,%1
   ldi %0,%#%1
   ldi %0,%#%1
   ldub %0,%1
   ldub %0,%1
   stb %1,%0
   stb %1,%0"
  [(set_attr "type" "int2,int2,int4,load2,load4,store2,store4")
   (set_attr "length" "2,2,4,2,4,2,4")])

(define_expand "movhi"
  [(set (match_operand:HI 0 "general_operand" "")
        (match_operand:HI 1 "general_operand" ""))]
  ""
  "
{
  /* Fixup PIC cases.  */
  if (flag_pic)
    {
      if (symbolic_operand (operands[1], HImode))
        {
          if (reload_in_progress || reload_completed)
            operands[1] = m32r_legitimize_pic_address (operands[1], operands[0]);
          else
            operands[1] = m32r_legitimize_pic_address (operands[1], NULL_RTX);
        }
    }

  /* Everything except mem = const or mem = mem can be done easily.  */

  if (MEM_P (operands[0]))
    operands[1] = force_reg (HImode, operands[1]);
}")

(define_insn "*movhi_insn"
  [(set (match_operand:HI 0 "move_dest_operand" "=r,r,r,r,r,r,T,m")
        (match_operand:HI 1 "move_src_operand" "r,I,JQR,K,T,m,r,r"))]
  "register_operand (operands[0], HImode) || register_operand (operands[1], HImode)"
  "@
   mv %0,%1
   ldi %0,%#%1
   ldi %0,%#%1
   ld24 %0,%#%1
   lduh %0,%1
   lduh %0,%1
   sth %1,%0
   sth %1,%0"
  [(set_attr "type" "int2,int2,int4,int4,load2,load4,store2,store4")
   (set_attr "length" "2,2,4,4,2,4,2,4")])

(define_expand "movsi_push"
  [(set (mem:SI (pre_dec:SI (match_operand:SI 0 "register_operand" "")))
        (match_operand:SI 1 "register_operand" ""))]
  ""
  "")

(define_expand "movsi_pop"
  [(set (match_operand:SI 0 "register_operand" "")
        (mem:SI (post_inc:SI (match_operand:SI 1 "register_operand" ""))))]
  ""
  "")

(define_expand "movsi"
  [(set (match_operand:SI 0 "general_operand" "")
        (match_operand:SI 1 "general_operand" ""))]
  ""
  "
{
  /* Fixup PIC cases.  */
  if (flag_pic)
    {
      if (symbolic_operand (operands[1], SImode))
        {
          if (reload_in_progress || reload_completed)
            operands[1] = m32r_legitimize_pic_address (operands[1], operands[0]);
          else
            operands[1] = m32r_legitimize_pic_address (operands[1], NULL_RTX);
        }
    }

  /* Everything except mem = const or mem = mem can be done easily.  */

  if (MEM_P (operands[0]))
    operands[1] = force_reg (SImode, operands[1]);

  /* Small Data Area reference?  */
  if (small_data_operand (operands[1], SImode))
    {
      emit_insn (gen_movsi_sda (operands[0], operands[1]));
      DONE;
    }

  /* If medium or large code model, symbols have to be loaded with
     seth/add3.  */
  if (addr32_operand (operands[1], SImode))
    {
      emit_insn (gen_movsi_addr32 (operands[0], operands[1]));
      DONE;
    }
}")

;; ??? Do we need a const_double constraint here for large unsigned values?
(define_insn "*movsi_insn"
  [(set (match_operand:SI 0 "move_dest_operand" "=r,r,r,r,r,r,r,r,r,T,S,m")
        (match_operand:SI 1 "move_src_operand" "r,I,J,MQ,L,n,T,U,m,r,r,r"))]
  "register_operand (operands[0], SImode) || register_operand (operands[1], SImode)"
  "*
{
  if (REG_P (operands[0]) || GET_CODE (operands[1]) == SUBREG)
    {
      switch (GET_CODE (operands[1]))
        {
          default:
            break;

          case REG:
          case SUBREG:
            return \"mv %0,%1\";

          case MEM:
            if (GET_CODE (XEXP (operands[1], 0)) == POST_INC
                && XEXP (XEXP (operands[1], 0), 0) == stack_pointer_rtx)
              return \"pop %0\";

            return \"ld %0,%1\";

          case CONST_INT:
            if (satisfies_constraint_J (operands[1]))
              return \"ldi %0,%#%1\\t; %X1\";

            if (satisfies_constraint_M (operands[1]))
              return \"ld24 %0,%#%1\\t; %X1\";

            if (satisfies_constraint_L (operands[1]))
              return \"seth %0,%#%T1\\t; %X1\";

            return \"#\";

          case CONST:
          case SYMBOL_REF:
          case LABEL_REF:
            if (TARGET_ADDR24)
              return \"ld24 %0,%#%1\";

            return \"#\";
        }
    }

  else if (MEM_P (operands[0])
           && (REG_P (operands[1]) || GET_CODE (operands[1]) == SUBREG))
    {
      if (GET_CODE (XEXP (operands[0], 0)) == PRE_DEC
          && XEXP (XEXP (operands[0], 0), 0) == stack_pointer_rtx)
        return \"push %1\";

      return \"st %1,%0\";
    }

  gcc_unreachable ();
}"
  [(set_attr "type" "int2,int2,int4,int4,int4,multi,load2,load2,load4,store2,store2,store4")
   (set_attr "length" "2,2,4,4,4,8,2,2,4,2,2,4")])

; Try to use a four byte / two byte pair for constants not loadable with
; ldi, ld24, seth.

(define_split
 [(set (match_operand:SI 0 "register_operand" "")
       (match_operand:SI 1 "two_insn_const_operand" ""))]
  ""
  [(set (match_dup 0) (match_dup 2))
   (set (match_dup 0) (ior:SI (match_dup 0) (match_dup 3)))]
  "
{
  unsigned HOST_WIDE_INT val = INTVAL (operands[1]);
  unsigned HOST_WIDE_INT tmp;
  int shift;

  /* In all cases we will emit two instructions.  However we try to
     use 2 byte instructions wherever possible.  We can assume the
     constant isn't loadable with any of ldi, ld24, or seth.  */

  /* See if we can load a 24-bit unsigned value and invert it.  */
  if (UINT24_P (~ val))
    {
      emit_insn (gen_movsi (operands[0], GEN_INT (~ val)));
      emit_insn (gen_one_cmplsi2 (operands[0], operands[0]));
      DONE;
    }

  /* See if we can load a 24-bit unsigned value and shift it into place.
     0x01fffffe is just beyond ld24's range.  */
  for (shift = 1, tmp = 0x01fffffe;
       shift < 8;
       ++shift, tmp <<= 1)
    {
      if ((val & ~tmp) == 0)
        {
          emit_insn (gen_movsi (operands[0], GEN_INT (val >> shift)));
          emit_insn (gen_ashlsi3 (operands[0], operands[0], GEN_INT (shift)));
          DONE;
        }
    }

  /* Can't use any two byte insn, fall back to seth/or3.  Use ~0xffff instead
     of 0xffff0000, since the later fails on a 64-bit host.  */
  operands[2] = GEN_INT ((val) & ~0xffff);
  operands[3] = GEN_INT ((val) & 0xffff);
}")

(define_split
  [(set (match_operand:SI 0 "register_operand" "")
        (match_operand:SI 1 "seth_add3_operand" ""))]
  "TARGET_ADDR32"
  [(set (match_dup 0)
        (high:SI (match_dup 1)))
   (set (match_dup 0)
        (lo_sum:SI (match_dup 0)
                   (match_dup 1)))]
  "")

;; Small data area support.
;; The address of _SDA_BASE_ is loaded into a register and all objects in
;; the small data area are indexed off that.  This is done for each reference
;; but cse will clean things up for us.  We let the compiler choose the
;; register to use so we needn't allocate (and maybe even fix) a special
;; register to use.  Since the load and store insns have a 16-bit offset the
;; total size of the data area can be 64K.  However, if the data area lives
;; above 16M (24 bits), _SDA_BASE_ will have to be loaded with seth/add3 which
;; would then yield 3 instructions to reference an object [though there would
;; be no net loss if two or more objects were referenced].  The 3 insns can be
;; reduced back to 2 if the size of the small data area were reduced to 32K
;; [then seth + ld/st would work for any object in the area].  Doing this
;; would require special handling of _SDA_BASE_ (its value would be
;; (.sdata + 32K) & 0xffff0000) and reloc computations would be different
;; [I think].  What to do about this is deferred until later and for now we
;; require .sdata to be in the first 16M.

(define_expand "movsi_sda"
  [(set (match_dup 2)
        (unspec:SI [(const_int 0)] UNSPEC_LOAD_SDA_BASE))
   (set (match_operand:SI 0 "register_operand" "")
        (lo_sum:SI (match_dup 2)
                   (match_operand:SI 1 "small_data_operand" "")))]
  ""
  "
{
  if (reload_in_progress || reload_completed)
    operands[2] = operands[0];
  else
    operands[2] = gen_reg_rtx (SImode);
}")

(define_insn "*load_sda_base_32"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (unspec:SI [(const_int 0)] UNSPEC_LOAD_SDA_BASE))]
  "TARGET_ADDR32"
  "seth %0,%#shigh(_SDA_BASE_)\;add3 %0,%0,%#low(_SDA_BASE_)"
  [(set_attr "type" "multi")
   (set_attr "length" "8")])

(define_insn "*load_sda_base"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (unspec:SI [(const_int 0)] UNSPEC_LOAD_SDA_BASE))]
  ""
  "ld24 %0,#_SDA_BASE_"
  [(set_attr "type" "int4")
   (set_attr "length" "4")])

;; 32-bit address support.

(define_expand "movsi_addr32"
  [(set (match_dup 2)
        ; addr32_operand isn't used because it's too restrictive,
        ; seth_add3_operand is more general and thus safer.
        (high:SI (match_operand:SI 1 "seth_add3_operand" "")))
   (set (match_operand:SI 0 "register_operand" "")
        (lo_sum:SI (match_dup 2) (match_dup 1)))]
  ""
  "
{
  if (reload_in_progress || reload_completed)
    operands[2] = operands[0];
  else
    operands[2] = gen_reg_rtx (SImode);
}")

(define_insn "set_hi_si"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (high:SI (match_operand 1 "symbolic_operand" "")))]
  ""
  "seth %0,%#shigh(%1)"
  [(set_attr "type" "int4")
   (set_attr "length" "4")])

(define_insn "lo_sum_si"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (lo_sum:SI (match_operand:SI 1 "register_operand" "r")
                   (match_operand:SI 2 "immediate_operand" "in")))]
  ""
  "add3 %0,%1,%#%B2"
  [(set_attr "type" "int4")
   (set_attr "length" "4")])

(define_expand "movdi"
  [(set (match_operand:DI 0 "general_operand" "")
        (match_operand:DI 1 "general_operand" ""))]
  ""
  "
{
  /* Fixup PIC cases.  */
  if (flag_pic)
    {
      if (symbolic_operand (operands[1], DImode))
        {
          if (reload_in_progress || reload_completed)
            operands[1] = m32r_legitimize_pic_address (operands[1], operands[0]);
          else
            operands[1] = m32r_legitimize_pic_address (operands[1], NULL_RTX);
        }
    }

  /* Everything except mem = const or mem = mem can be done easily.  */

  if (MEM_P (operands[0]))
    operands[1] = force_reg (DImode, operands[1]);
}")

(define_insn "*movdi_insn"
  [(set (match_operand:DI 0 "move_dest_operand" "=r,r,r,r,m")
        (match_operand:DI 1 "move_double_src_operand" "r,nG,F,m,r"))]
  "register_operand (operands[0], DImode) || register_operand (operands[1], DImode)"
  "#"
  [(set_attr "type" "multi,multi,multi,load8,store8")
   (set_attr "length" "4,4,16,6,6")])

(define_split
  [(set (match_operand:DI 0 "move_dest_operand" "")
        (match_operand:DI 1 "move_double_src_operand" ""))]
  "reload_completed"
  [(match_dup 2)]
  "operands[2] = gen_split_move_double (operands);")
\f
;; Floating point move insns.

(define_expand "movsf"
  [(set (match_operand:SF 0 "general_operand" "")
        (match_operand:SF 1 "general_operand" ""))]
  ""
  "
{
  /* Fixup PIC cases.  */
  if (flag_pic)
    {
      if (symbolic_operand (operands[1], SFmode))
        {
          if (reload_in_progress || reload_completed)
            operands[1] = m32r_legitimize_pic_address (operands[1], operands[0]);
          else
            operands[1] = m32r_legitimize_pic_address (operands[1], NULL_RTX);
        }
    }

  /* Everything except mem = const or mem = mem can be done easily.  */

  if (MEM_P (operands[0]))
    operands[1] = force_reg (SFmode, operands[1]);
}")

(define_insn "*movsf_insn"
  [(set (match_operand:SF 0 "move_dest_operand" "=r,r,r,r,r,T,S,m")
        (match_operand:SF 1 "move_src_operand" "r,F,U,S,m,r,r,r"))]
  "register_operand (operands[0], SFmode) || register_operand (operands[1], SFmode)"
  "@
   mv %0,%1
   #
   ld %0,%1
   ld %0,%1
   ld %0,%1
   st %1,%0
   st %1,%0
   st %1,%0"
  ;; ??? Length of alternative 1 is either 2, 4 or 8.
  [(set_attr "type" "int2,multi,load2,load2,load4,store2,store2,store4")
   (set_attr "length" "2,8,2,2,4,2,2,4")])

(define_split
  [(set (match_operand:SF 0 "register_operand" "")
        (match_operand:SF 1 "const_double_operand" ""))]
  "reload_completed"
  [(set (match_dup 2) (match_dup 3))]
  "
{
  operands[2] = operand_subword (operands[0], 0, 0, SFmode);
  operands[3] = operand_subword (operands[1], 0, 0, SFmode);
}")

(define_expand "movdf"
  [(set (match_operand:DF 0 "general_operand" "")
        (match_operand:DF 1 "general_operand" ""))]
  ""
  "
{
  /* Fixup PIC cases.  */
  if (flag_pic)
    {
      if (symbolic_operand (operands[1], DFmode))
        {
          if (reload_in_progress || reload_completed)
            operands[1] = m32r_legitimize_pic_address (operands[1], operands[0]);
          else
            operands[1] = m32r_legitimize_pic_address (operands[1], NULL_RTX);
        }
    }

  /* Everything except mem = const or mem = mem can be done easily.  */

  if (MEM_P (operands[0]))
    operands[1] = force_reg (DFmode, operands[1]);
}")

(define_insn "*movdf_insn"
  [(set (match_operand:DF 0 "move_dest_operand" "=r,r,r,m")
        (match_operand:DF 1 "move_double_src_operand" "r,F,m,r"))]
  "register_operand (operands[0], DFmode) || register_operand (operands[1], DFmode)"
  "#"
  [(set_attr "type" "multi,multi,load8,store8")
   (set_attr "length" "4,16,6,6")])

(define_split
  [(set (match_operand:DF 0 "move_dest_operand" "")
        (match_operand:DF 1 "move_double_src_operand" ""))]
  "reload_completed"
  [(match_dup 2)]
  "operands[2] = gen_split_move_double (operands);")
\f
;; Zero extension instructions.

(define_insn "zero_extendqihi2"
  [(set (match_operand:HI 0 "register_operand" "=r,r,r")
        (zero_extend:HI (match_operand:QI 1 "extend_operand" "r,T,m")))]
  ""
  "@
   and3 %0,%1,%#255
   ldub %0,%1
   ldub %0,%1"
  [(set_attr "type" "int4,load2,load4")
   (set_attr "length" "4,2,4")])

(define_insn "zero_extendqisi2"
  [(set (match_operand:SI 0 "register_operand" "=r,r,r")
        (zero_extend:SI (match_operand:QI 1 "extend_operand" "r,T,m")))]
  ""
  "@
   and3 %0,%1,%#255
   ldub %0,%1
   ldub %0,%1"
  [(set_attr "type" "int4,load2,load4")
   (set_attr "length" "4,2,4")])

(define_insn "zero_extendhisi2"
  [(set (match_operand:SI 0 "register_operand" "=r,r,r")
        (zero_extend:SI (match_operand:HI 1 "extend_operand" "r,T,m")))]
  ""
  "@
   and3 %0,%1,%#65535
   lduh %0,%1
   lduh %0,%1"
  [(set_attr "type" "int4,load2,load4")
   (set_attr "length" "4,2,4")])
\f
;; Signed conversions from a smaller integer to a larger integer
(define_insn "extendqihi2"
  [(set (match_operand:HI 0 "register_operand" "=r,r,r")
        (sign_extend:HI (match_operand:QI 1 "extend_operand" "0,T,m")))]
  ""
  "@
    #
    ldb %0,%1
    ldb %0,%1"
  [(set_attr "type" "multi,load2,load4")
   (set_attr "length" "2,2,4")])

(define_split
  [(set (match_operand:HI 0 "register_operand" "")
        (sign_extend:HI (match_operand:QI 1 "register_operand" "")))]
  "reload_completed"
  [(match_dup 2)
   (match_dup 3)]
  "
{
  rtx op0   = gen_lowpart (SImode, operands[0]);
  rtx shift = GEN_INT (24);

  operands[2] = gen_ashlsi3 (op0, op0, shift);
  operands[3] = gen_ashrsi3 (op0, op0, shift);
}")

(define_insn "extendqisi2"
  [(set (match_operand:SI 0 "register_operand" "=r,r,r")
        (sign_extend:SI (match_operand:QI 1 "extend_operand" "0,T,m")))]
  ""
  "@
    #
    ldb %0,%1
    ldb %0,%1"
  [(set_attr "type" "multi,load2,load4")
   (set_attr "length" "4,2,4")])

(define_split
  [(set (match_operand:SI 0 "register_operand" "")
        (sign_extend:SI (match_operand:QI 1 "register_operand" "")))]
  "reload_completed"
  [(match_dup 2)
   (match_dup 3)]
  "
{
  rtx shift = GEN_INT (24);

  operands[2] = gen_ashlsi3 (operands[0], operands[0], shift);
  operands[3] = gen_ashrsi3 (operands[0], operands[0], shift);
}")

(define_insn "extendhisi2"
  [(set (match_operand:SI 0 "register_operand" "=r,r,r")
        (sign_extend:SI (match_operand:HI 1 "extend_operand" "0,T,m")))]
  ""
  "@
    #
    ldh %0,%1
    ldh %0,%1"
  [(set_attr "type" "multi,load2,load4")
   (set_attr "length" "4,2,4")])

(define_split
  [(set (match_operand:SI 0 "register_operand" "")
        (sign_extend:SI (match_operand:HI 1 "register_operand" "")))]
  "reload_completed"
  [(match_dup 2)
   (match_dup 3)]
  "
{
  rtx shift = GEN_INT (16);

  operands[2] = gen_ashlsi3 (operands[0], operands[0], shift);
  operands[3] = gen_ashrsi3 (operands[0], operands[0], shift);
}")
\f
;; Arithmetic instructions.

; ??? Adding an alternative to split add3 of small constants into two
; insns yields better instruction packing but slower code.  Adds of small
; values is done a lot.

(define_insn "addsi3"
  [(set (match_operand:SI 0 "register_operand" "=r,r,r")
        (plus:SI (match_operand:SI 1 "register_operand" "%0,0,r")
                 (match_operand:SI 2 "nonmemory_operand" "r,I,J")))]
  ""
  "@
   add %0,%2
   addi %0,%#%2
   add3 %0,%1,%#%2"
  [(set_attr "type" "int2,int2,int4")
   (set_attr "length" "2,2,4")])

;(define_split
;  [(set (match_operand:SI 0 "register_operand" "")
;       (plus:SI (match_operand:SI 1 "register_operand" "")
;                (match_operand:SI 2 "int8_operand" "")))]
;  "reload_completed
;   && REGNO (operands[0]) != REGNO (operands[1])
;   && satisfies_constraint_I (operands[2])
;   && INTVAL (operands[2]) != 0"
;  [(set (match_dup 0) (match_dup 1))
;   (set (match_dup 0) (plus:SI (match_dup 0) (match_dup 2)))]
;  "")

(define_insn "adddi3"
  [(set (match_operand:DI 0 "register_operand" "=r")
        (plus:DI (match_operand:DI 1 "register_operand" "%0")
                 (match_operand:DI 2 "register_operand" "r")))
   (clobber (reg:CC 17))]
  ""
  "#"
  [(set_attr "type" "multi")
   (set_attr "length" "6")])

;; ??? The cmp clears the condition bit.  Can we speed up somehow?
(define_split
  [(set (match_operand:DI 0 "register_operand" "")
        (plus:DI (match_operand:DI 1 "register_operand" "")
                 (match_operand:DI 2 "register_operand" "")))
   (clobber (reg:CC 17))]
  "reload_completed"
  [(parallel [(set (reg:CC 17)
                   (const_int 0))
              (use (match_dup 4))])
   (parallel [(set (match_dup 4)
                   (plus:SI (match_dup 4)
                            (plus:SI (match_dup 5)
                                     (ne:SI (reg:CC 17) (const_int 0)))))
              (set (reg:CC 17)
                   (unspec:CC [(const_int 0)] UNSPEC_SET_CBIT))])
   (parallel [(set (match_dup 6)
                   (plus:SI (match_dup 6)
                            (plus:SI (match_dup 7)
                                     (ne:SI (reg:CC 17) (const_int 0)))))
              (set (reg:CC 17)
                   (unspec:CC [(const_int 0)] UNSPEC_SET_CBIT))])]
  "
{
  operands[4] = operand_subword (operands[0], (WORDS_BIG_ENDIAN != 0), 0, DImode);
  operands[5] = operand_subword (operands[2], (WORDS_BIG_ENDIAN != 0), 0, DImode);
  operands[6] = operand_subword (operands[0], (WORDS_BIG_ENDIAN == 0), 0, DImode);
  operands[7] = operand_subword (operands[2], (WORDS_BIG_ENDIAN == 0), 0, DImode);
}")

(define_insn "*clear_c"
  [(set (reg:CC 17)
        (const_int 0))
   (use (match_operand:SI 0 "register_operand" "r"))]
  ""
  "cmp %0,%0"
  [(set_attr "type" "int2")
   (set_attr "length" "2")])

(define_insn "*add_carry"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (plus:SI (match_operand:SI 1 "register_operand" "%0")
                 (plus:SI (match_operand:SI 2 "register_operand" "r")
                          (ne:SI (reg:CC 17) (const_int 0)))))
   (set (reg:CC 17)
        (unspec:CC [(const_int 0)] UNSPEC_SET_CBIT))]
  ""
  "addx %0,%2"
  [(set_attr "type" "int2")
   (set_attr "length" "2")])

(define_insn "subsi3"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (minus:SI (match_operand:SI 1 "register_operand" "0")
                  (match_operand:SI 2 "register_operand" "r")))]
  ""
  "sub %0,%2"
  [(set_attr "type" "int2")
   (set_attr "length" "2")])

(define_insn "subdi3"
  [(set (match_operand:DI 0 "register_operand" "=r")
        (minus:DI (match_operand:DI 1 "register_operand" "0")
                  (match_operand:DI 2 "register_operand" "r")))
   (clobber (reg:CC 17))]
  ""
  "#"
  [(set_attr "type" "multi")
   (set_attr "length" "6")])

;; ??? The cmp clears the condition bit.  Can we speed up somehow?
(define_split
  [(set (match_operand:DI 0 "register_operand" "")
        (minus:DI (match_operand:DI 1 "register_operand" "")
                  (match_operand:DI 2 "register_operand" "")))
   (clobber (reg:CC 17))]
  "reload_completed"
  [(parallel [(set (reg:CC 17)
                   (const_int 0))
              (use (match_dup 4))])
   (parallel [(set (match_dup 4)
                   (minus:SI (match_dup 4)
                             (minus:SI (match_dup 5)
                                       (ne:SI (reg:CC 17) (const_int 0)))))
              (set (reg:CC 17)
                   (unspec:CC [(const_int 0)] UNSPEC_SET_CBIT))])
   (parallel [(set (match_dup 6)
                   (minus:SI (match_dup 6)
                             (minus:SI (match_dup 7)
                                       (ne:SI (reg:CC 17) (const_int 0)))))
              (set (reg:CC 17)
                   (unspec:CC [(const_int 0)] UNSPEC_SET_CBIT))])]
  "
{
  operands[4] = operand_subword (operands[0], (WORDS_BIG_ENDIAN != 0), 0, DImode);
  operands[5] = operand_subword (operands[2], (WORDS_BIG_ENDIAN != 0), 0, DImode);
  operands[6] = operand_subword (operands[0], (WORDS_BIG_ENDIAN == 0), 0, DImode);
  operands[7] = operand_subword (operands[2], (WORDS_BIG_ENDIAN == 0), 0, DImode);
}")

(define_insn "*sub_carry"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (minus:SI (match_operand:SI 1 "register_operand" "%0")
                  (minus:SI (match_operand:SI 2 "register_operand" "r")
                            (ne:SI (reg:CC 17) (const_int 0)))))
   (set (reg:CC 17)
        (unspec:CC [(const_int 0)] UNSPEC_SET_CBIT))]
  ""
  "subx %0,%2"
  [(set_attr "type" "int2")
   (set_attr "length" "2")])
\f
; Multiply/Divide instructions.

(define_insn "mulhisi3"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (mult:SI (sign_extend:SI (match_operand:HI 1 "register_operand" "r"))
                 (sign_extend:SI (match_operand:HI 2 "register_operand" "r"))))]
  ""
  "mullo %1,%2\;mvfacmi %0"
  [(set_attr "type" "multi")
   (set_attr "length" "4")])

(define_insn "mulsi3"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (mult:SI (match_operand:SI 1 "register_operand" "%0")
                 (match_operand:SI 2 "register_operand" "r")))]
  ""
  "mul %0,%2"
  [(set_attr "type" "mul2")
   (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 "register_operand" "r")))]
  ""
  "div %0,%2"
  [(set_attr "type" "div4")
   (set_attr "length" "4")])

(define_insn "udivsi3"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (udiv:SI (match_operand:SI 1 "register_operand" "0")
                 (match_operand:SI 2 "register_operand" "r")))]
  ""
  "divu %0,%2"
  [(set_attr "type" "div4")
   (set_attr "length" "4")])

(define_insn "modsi3"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (mod:SI (match_operand:SI 1 "register_operand" "0")
                (match_operand:SI 2 "register_operand" "r")))]
  ""
  "rem %0,%2"
  [(set_attr "type" "div4")
   (set_attr "length" "4")])

(define_insn "umodsi3"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (umod:SI (match_operand:SI 1 "register_operand" "0")
                 (match_operand:SI 2 "register_operand" "r")))]
  ""
  "remu %0,%2"
  [(set_attr "type" "div4")
   (set_attr "length" "4")])
\f
;; Boolean instructions.
;;
;; We don't define the DImode versions as expand_binop does a good enough job.
;; And if it doesn't it should be fixed.

(define_insn "andsi3"
  [(set (match_operand:SI 0 "register_operand" "=r,r")
        (and:SI (match_operand:SI 1 "register_operand" "%0,r")
                (match_operand:SI 2 "reg_or_uint16_operand" "r,K")))]
  ""
  "*
{
  /* If we are worried about space, see if we can break this up into two
     short instructions, which might eliminate a NOP being inserted.  */
  if (optimize_size
      && m32r_not_same_reg (operands[0], operands[1])
      && satisfies_constraint_I (operands[2]))
    return \"#\";

  else if (CONST_INT_P (operands[2]))
    return \"and3 %0,%1,%#%X2\";

  return \"and %0,%2\";
}"
  [(set_attr "type" "int2,int4")
   (set_attr "length" "2,4")])

(define_split
  [(set (match_operand:SI 0 "register_operand" "")
        (and:SI (match_operand:SI 1 "register_operand" "")
                (match_operand:SI 2 "int8_operand" "")))]
  "optimize_size && m32r_not_same_reg (operands[0], operands[1])"
  [(set (match_dup 0) (match_dup 2))
   (set (match_dup 0) (and:SI (match_dup 0) (match_dup 1)))]
  "")

(define_insn "iorsi3"
  [(set (match_operand:SI 0 "register_operand" "=r,r")
        (ior:SI (match_operand:SI 1 "register_operand" "%0,r")
                (match_operand:SI 2 "reg_or_uint16_operand" "r,K")))]
  ""
  "*
{
  /* If we are worried about space, see if we can break this up into two
     short instructions, which might eliminate a NOP being inserted.  */
  if (optimize_size
      && m32r_not_same_reg (operands[0], operands[1])
      && satisfies_constraint_I (operands[2]))
    return \"#\";

  else if (CONST_INT_P (operands[2]))
    return \"or3 %0,%1,%#%X2\";

  return \"or %0,%2\";
}"
  [(set_attr "type" "int2,int4")
   (set_attr "length" "2,4")])

(define_split
  [(set (match_operand:SI 0 "register_operand" "")
        (ior:SI (match_operand:SI 1 "register_operand" "")
                (match_operand:SI 2 "int8_operand" "")))]
  "optimize_size && m32r_not_same_reg (operands[0], operands[1])"
  [(set (match_dup 0) (match_dup 2))
   (set (match_dup 0) (ior:SI (match_dup 0) (match_dup 1)))]
  "")

(define_insn "xorsi3"
  [(set (match_operand:SI 0 "register_operand" "=r,r")
        (xor:SI (match_operand:SI 1 "register_operand" "%0,r")
                (match_operand:SI 2 "reg_or_uint16_operand" "r,K")))]
  ""
  "*
{
  /* If we are worried about space, see if we can break this up into two
     short instructions, which might eliminate a NOP being inserted.  */
  if (optimize_size
      && m32r_not_same_reg (operands[0], operands[1])
      && satisfies_constraint_I (operands[2]))
    return \"#\";

  else if (CONST_INT_P (operands[2]))
    return \"xor3 %0,%1,%#%X2\";

  return \"xor %0,%2\";
}"
  [(set_attr "type" "int2,int4")
   (set_attr "length" "2,4")])

(define_split
  [(set (match_operand:SI 0 "register_operand" "")
        (xor:SI (match_operand:SI 1 "register_operand" "")
                (match_operand:SI 2 "int8_operand" "")))]
  "optimize_size && m32r_not_same_reg (operands[0], operands[1])"
  [(set (match_dup 0) (match_dup 2))
   (set (match_dup 0) (xor:SI (match_dup 0) (match_dup 1)))]
  "")

(define_insn "negsi2"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (neg:SI (match_operand:SI 1 "register_operand" "r")))]
  ""
  "neg %0,%1"
  [(set_attr "type" "int2")
   (set_attr "length" "2")])

(define_insn "one_cmplsi2"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (not:SI (match_operand:SI 1 "register_operand" "r")))]
  ""
  "not %0,%1"
  [(set_attr "type" "int2")
   (set_attr "length" "2")])
\f
;; Shift instructions.

(define_insn "ashlsi3"
  [(set (match_operand:SI 0 "register_operand" "=r,r,r")
        (ashift:SI (match_operand:SI 1 "register_operand" "0,0,r")
                   (match_operand:SI 2 "reg_or_uint16_operand" "r,O,K")))]
  ""
  "@
   sll %0,%2
   slli %0,%#%2
   sll3 %0,%1,%#%2"
  [(set_attr "type" "shift2,shift2,shift4")
   (set_attr "length" "2,2,4")])

(define_insn "ashrsi3"
  [(set (match_operand:SI 0 "register_operand" "=r,r,r")
        (ashiftrt:SI (match_operand:SI 1 "register_operand" "0,0,r")
                     (match_operand:SI 2 "reg_or_uint16_operand" "r,O,K")))]
  ""
  "@
   sra %0,%2
   srai %0,%#%2
   sra3 %0,%1,%#%2"
  [(set_attr "type" "shift2,shift2,shift4")
   (set_attr "length" "2,2,4")])

(define_insn "lshrsi3"
  [(set (match_operand:SI 0 "register_operand" "=r,r,r")
        (lshiftrt:SI (match_operand:SI 1 "register_operand" "0,0,r")
                     (match_operand:SI 2 "reg_or_uint16_operand" "r,O,K")))]
  ""
  "@
   srl %0,%2
   srli %0,%#%2
   srl3 %0,%1,%#%2"
  [(set_attr "type" "shift2,shift2,shift4")
   (set_attr "length" "2,2,4")])
\f
;; Compare instructions.
;; This controls RTL generation and register allocation.

;; We generate RTL for comparisons and branches by having the cmpxx
;; patterns store away the operands.  Then the bcc patterns
;; emit RTL for both the compare and the branch.
;;
;; On the m32r it is more efficient to use the bxxz instructions and
;; thus merge the compare and branch into one instruction, so they are
;; preferred.

(define_insn "cmp_eqsi_zero_insn"
  [(set (reg:CC 17)
        (eq:CC (match_operand:SI 0 "register_operand" "r,r")
               (match_operand:SI 1 "reg_or_zero_operand" "r,P")))]
  "TARGET_M32RX || TARGET_M32R2"
  "@
   cmpeq %0, %1
   cmpz  %0"
  [(set_attr "type" "int4")
   (set_attr "length" "4")])

;; The cmp_xxx_insn patterns set the condition bit to the result of the
;; comparison.  There isn't a "compare equal" instruction so cmp_eqsi_insn
;; is quite inefficient.  However, it is rarely used.

(define_insn "cmp_eqsi_insn"
  [(set (reg:CC 17)
        (eq:CC (match_operand:SI 0 "register_operand" "r,r")
               (match_operand:SI 1 "reg_or_cmp_int16_operand" "r,P")))
   (clobber (match_scratch:SI 2 "=&r,&r"))]
  ""
  "*
{
  if (which_alternative == 0)
    {
         return \"mv %2,%0\;sub %2,%1\;cmpui %2,#1\";
    }
  else
    {
        if (INTVAL (operands [1]) == 0)
          return \"cmpui %0, #1\";
        else if (REGNO (operands [2]) == REGNO (operands [0]))
          return \"addi %0,%#%N1\;cmpui %2,#1\";
        else
          return \"add3 %2,%0,%#%N1\;cmpui %2,#1\";
    }
}"
  [(set_attr "type" "multi,multi")
   (set_attr "length" "8,8")])

(define_insn "cmp_ltsi_insn"
  [(set (reg:CC 17)
        (lt:CC (match_operand:SI 0 "register_operand" "r,r")
               (match_operand:SI 1 "reg_or_int16_operand" "r,J")))]
  ""
  "@
   cmp %0,%1
   cmpi %0,%#%1"
  [(set_attr "type" "int2,int4")
   (set_attr "length" "2,4")])

(define_insn "cmp_ltusi_insn"
  [(set (reg:CC 17)
        (ltu:CC (match_operand:SI 0 "register_operand" "r,r")
                (match_operand:SI 1 "reg_or_int16_operand" "r,J")))]
  ""
  "@
   cmpu %0,%1
   cmpui %0,%#%1"
  [(set_attr "type" "int2,int4")
   (set_attr "length" "2,4")])
\f
;; These control RTL generation for conditional jump insns.

(define_expand "cbranchsi4"
  ; the comparison is emitted by gen_compare if needed.
  [(set (pc)
        (if_then_else (match_operator 0 "ordered_comparison_operator"
                       [(match_operand:SI 1 "register_operand" "")
                        (match_operand:SI 2 "reg_or_cmp_int16_operand" "")])
                      (label_ref (match_operand 3 "" ""))
                      (pc)))]
  ""
  "
{
  operands[0] = gen_compare (GET_CODE (operands[0]), operands[1], operands[2], FALSE);
  operands[1] = XEXP (operands[0], 0);
  operands[2] = XEXP (operands[0], 1);
}")

;; Now match both normal and inverted jump.

(define_insn "*branch_insn"
  [(set (pc)
        (if_then_else (match_operator 1 "eqne_comparison_operator"
                                      [(reg 17) (const_int 0)])
                      (label_ref (match_operand 0 "" ""))
                      (pc)))]
  ""
  "*
{
  static char instruction[40];
  sprintf (instruction, \"%s%s %%l0\",
           (GET_CODE (operands[1]) == NE) ? \"bc\" : \"bnc\",
           (get_attr_length (insn) == 2) ? \".s\" : \"\");
  return instruction;
}"
  [(set_attr "type" "branch")
   ; cf PR gcc/28508
   ; We use 300/600 instead of 512,1024 to account for inaccurate insn
   ; lengths and insn alignments that are complex to track.
   ; It's not important that we be hyper-precise here.  It may be more
   ; important blah blah blah when the chip supports parallel execution
   ; blah blah blah but until then blah blah blah this is simple and
   ; suffices.
   (set (attr "length") (if_then_else (ltu (plus (minus (match_dup 0) (pc))
                                                 (const_int 300))
                                           (const_int 600))
                                      (const_int 2)
                                      (const_int 4)))])

(define_insn "*rev_branch_insn"
  [(set (pc)
        (if_then_else (match_operator 1 "eqne_comparison_operator"
                                      [(reg 17) (const_int 0)])
                      (pc)
                      (label_ref (match_operand 0 "" ""))))]
  ;"REVERSIBLE_CC_MODE (GET_MODE (XEXP (operands[1], 0)))"
  ""
  "*
{
  static char instruction[40];
  sprintf (instruction, \"%s%s %%l0\",
           (GET_CODE (operands[1]) == EQ) ? \"bc\" : \"bnc\",
           (get_attr_length (insn) == 2) ? \".s\" : \"\");
  return instruction;
}"
  [(set_attr "type" "branch")
   ; cf PR gcc/28508
   ; We use 300/600 instead of 512,1024 to account for inaccurate insn
   ; lengths and insn alignments that are complex to track.
   ; It's not important that we be hyper-precise here.  It may be more
   ; important blah blah blah when the chip supports parallel execution
   ; blah blah blah but until then blah blah blah this is simple and
   ; suffices.
   (set (attr "length") (if_then_else (ltu (plus (minus (match_dup 0) (pc))
                                                 (const_int 300))
                                           (const_int 600))
                                      (const_int 2)
                                      (const_int 4)))])

; reg/reg compare and branch insns

(define_insn "*reg_branch_insn"
  [(set (pc)
        (if_then_else (match_operator 1 "eqne_comparison_operator"
                                      [(match_operand:SI 2 "register_operand" "r")
                                       (match_operand:SI 3 "register_operand" "r")])
                      (label_ref (match_operand 0 "" ""))
                      (pc)))]
  ""
  "*
{
  /* Is branch target reachable with beq/bne?  */
  if (get_attr_length (insn) == 4)
    {
      if (GET_CODE (operands[1]) == EQ)
        return \"beq %2,%3,%l0\";
      else
        return \"bne %2,%3,%l0\";
    }
  else
    {
      if (GET_CODE (operands[1]) == EQ)
        return \"bne %2,%3,1f\;bra %l0\;1:\";
      else
        return \"beq %2,%3,1f\;bra %l0\;1:\";
    }
}"
  [(set_attr "type" "branch")
  ; We use 25000/50000 instead of 32768/65536 to account for slot filling
  ; which is complex to track and inaccurate length specs.
   (set (attr "length") (if_then_else (ltu (plus (minus (match_dup 0) (pc))
                                                 (const_int 25000))
                                           (const_int 50000))
                                      (const_int 4)
                                      (const_int 8)))])

(define_insn "*rev_reg_branch_insn"
  [(set (pc)
        (if_then_else (match_operator 1 "eqne_comparison_operator"
                                      [(match_operand:SI 2 "register_operand" "r")
                                       (match_operand:SI 3 "register_operand" "r")])
                      (pc)
                      (label_ref (match_operand 0 "" ""))))]
  ""
  "*
{
  /* Is branch target reachable with beq/bne?  */
  if (get_attr_length (insn) == 4)
    {
      if (GET_CODE (operands[1]) == NE)
        return \"beq %2,%3,%l0\";
      else
        return \"bne %2,%3,%l0\";
    }
  else
    {
      if (GET_CODE (operands[1]) == NE)
        return \"bne %2,%3,1f\;bra %l0\;1:\";
      else
        return \"beq %2,%3,1f\;bra %l0\;1:\";
    }
}"
  [(set_attr "type" "branch")
  ; We use 25000/50000 instead of 32768/65536 to account for slot filling
  ; which is complex to track and inaccurate length specs.
   (set (attr "length") (if_then_else (ltu (plus (minus (match_dup 0) (pc))
                                                 (const_int 25000))
                                           (const_int 50000))
                                      (const_int 4)
                                      (const_int 8)))])

; reg/zero compare and branch insns

(define_insn "*zero_branch_insn"
  [(set (pc)
        (if_then_else (match_operator 1 "signed_comparison_operator"
                                      [(match_operand:SI 2 "register_operand" "r")
                                       (const_int 0)])
                      (label_ref (match_operand 0 "" ""))
                      (pc)))]
  ""
  "*
{
  const char *br,*invbr;
  char asmtext[40];

  switch (GET_CODE (operands[1]))
    {
      case EQ : br = \"eq\"; invbr = \"ne\"; break;
      case NE : br = \"ne\"; invbr = \"eq\"; break;
      case LE : br = \"le\"; invbr = \"gt\"; break;
      case GT : br = \"gt\"; invbr = \"le\"; break;
      case LT : br = \"lt\"; invbr = \"ge\"; break;
      case GE : br = \"ge\"; invbr = \"lt\"; break;

      default: gcc_unreachable ();
    }

  /* Is branch target reachable with bxxz?  */
  if (get_attr_length (insn) == 4)
    {
      sprintf (asmtext, \"b%sz %%2,%%l0\", br);
      output_asm_insn (asmtext, operands);
    }
  else
    {
      sprintf (asmtext, \"b%sz %%2,1f\;bra %%l0\;1:\", invbr);
      output_asm_insn (asmtext, operands);
    }
  return \"\";
}"
  [(set_attr "type" "branch")
  ; We use 25000/50000 instead of 32768/65536 to account for slot filling
  ; which is complex to track and inaccurate length specs.
   (set (attr "length") (if_then_else (ltu (plus (minus (match_dup 0) (pc))
                                                 (const_int 25000))
                                           (const_int 50000))
                                      (const_int 4)
                                      (const_int 8)))])

(define_insn "*rev_zero_branch_insn"
  [(set (pc)
        (if_then_else (match_operator 1 "eqne_comparison_operator"
                                      [(match_operand:SI 2 "register_operand" "r")
                                       (const_int 0)])
                      (pc)
                      (label_ref (match_operand 0 "" ""))))]
  ""
  "*
{
  const char *br,*invbr;
  char asmtext[40];

  switch (GET_CODE (operands[1]))
    {
      case EQ : br = \"eq\"; invbr = \"ne\"; break;
      case NE : br = \"ne\"; invbr = \"eq\"; break;
      case LE : br = \"le\"; invbr = \"gt\"; break;
      case GT : br = \"gt\"; invbr = \"le\"; break;
      case LT : br = \"lt\"; invbr = \"ge\"; break;
      case GE : br = \"ge\"; invbr = \"lt\"; break;

      default: gcc_unreachable ();
    }

  /* Is branch target reachable with bxxz?  */
  if (get_attr_length (insn) == 4)
    {
      sprintf (asmtext, \"b%sz %%2,%%l0\", invbr);
      output_asm_insn (asmtext, operands);
    }
  else
    {
      sprintf (asmtext, \"b%sz %%2,1f\;bra %%l0\;1:\", br);
      output_asm_insn (asmtext, operands);
    }
  return \"\";
}"
  [(set_attr "type" "branch")
  ; We use 25000/50000 instead of 32768/65536 to account for slot filling
  ; which is complex to track and inaccurate length specs.
   (set (attr "length") (if_then_else (ltu (plus (minus (match_dup 0) (pc))
                                                 (const_int 25000))
                                           (const_int 50000))
                                      (const_int 4)
                                      (const_int 8)))])
\f
;; S<cc> operations to set a register to 1/0 based on a comparison

(define_expand "cstoresi4"
  [(match_operand:SI 0 "register_operand" "")
   (match_operator:SI 1 "ordered_comparison_operator"
    [(match_operand:SI 2 "register_operand" "")
     (match_operand:SI 3 "reg_or_cmp_int16_operand" "")])]
  ""
  "
{
  if (GET_MODE (operands[0]) != SImode)
    FAIL;

  if (!gen_cond_store (GET_CODE (operands[1]),
                       operands[0], operands[2], operands[3]))
    FAIL;

  DONE;
}")

(define_insn "seq_insn_m32rx"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (eq:SI (match_operand:SI 1 "register_operand" "%r")
               (match_operand:SI 2 "reg_or_zero_operand" "rP")))
   (clobber (reg:CC 17))]
  "TARGET_M32RX || TARGET_M32R2"
  "#"
  [(set_attr "type" "multi")
   (set_attr "length" "6")])

(define_split
  [(set (match_operand:SI 0 "register_operand" "")
        (eq:SI (match_operand:SI 1 "register_operand" "")
               (match_operand:SI 2 "reg_or_zero_operand" "")))
   (clobber (reg:CC 17))]
  "TARGET_M32RX || TARGET_M32R2"
  [(set (reg:CC 17)
        (eq:CC (match_dup 1)
               (match_dup 2)))
   (set (match_dup 0)
        (ne:SI (reg:CC 17) (const_int 0)))]
  "")

(define_insn "seq_zero_insn"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (eq:SI (match_operand:SI 1 "register_operand" "r")
               (const_int 0)))
   (clobber (reg:CC 17))]
  "TARGET_M32R"
  "#"
  [(set_attr "type" "multi")
   (set_attr "length" "6")])

(define_split
  [(set (match_operand:SI 0 "register_operand" "")
        (eq:SI (match_operand:SI 1 "register_operand" "")
               (const_int 0)))
   (clobber (reg:CC 17))]
  "TARGET_M32R"
  [(match_dup 3)]
  "
{
  rtx op0 = operands[0];
  rtx op1 = operands[1];

  start_sequence ();
  emit_insn (gen_cmp_ltusi_insn (op1, const1_rtx));
  emit_insn (gen_movcc_insn (op0));
  operands[3] = get_insns ();
  end_sequence ();
}")

(define_insn "seq_insn"
  [(set (match_operand:SI 0 "register_operand" "=r,r,??r,r")
        (eq:SI (match_operand:SI 1 "register_operand" "r,r,r,r")
               (match_operand:SI 2 "reg_or_eq_int16_operand" "r,r,r,PK")))
   (clobber (reg:CC 17))
   (clobber (match_scratch:SI 3 "=1,2,&r,r"))]
  "TARGET_M32R"
  "#"
  [(set_attr "type" "multi")
   (set_attr "length" "8,8,10,10")])

(define_split
  [(set (match_operand:SI 0 "register_operand" "")
        (eq:SI (match_operand:SI 1 "register_operand" "")
               (match_operand:SI 2 "reg_or_eq_int16_operand" "")))
   (clobber (reg:CC 17))
   (clobber (match_scratch:SI 3 ""))]
  "TARGET_M32R && reload_completed"
  [(match_dup 4)]
  "
{
  rtx op0 = operands[0];
  rtx op1 = operands[1];
  rtx op2 = operands[2];
  rtx op3 = operands[3];
  HOST_WIDE_INT value;

  if (REG_P (op2) && REG_P (op3)
      && REGNO (op2) == REGNO (op3))
    {
      op1 = operands[2];
      op2 = operands[1];
    }

  start_sequence ();
  if (REG_P (op1) && REG_P (op3)
      && REGNO (op1) != REGNO (op3))
    {
      emit_move_insn (op3, op1);
      op1 = op3;
    }

  if (satisfies_constraint_P (op2) && (value = INTVAL (op2)) != 0)
    emit_insn (gen_addsi3 (op3, op1, GEN_INT (-value)));
  else
    emit_insn (gen_xorsi3 (op3, op1, op2));

  emit_insn (gen_cmp_ltusi_insn (op3, const1_rtx));
  emit_insn (gen_movcc_insn (op0));
  operands[4] = get_insns ();
  end_sequence ();
}")

(define_insn "sne_zero_insn"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (ne:SI (match_operand:SI 1 "register_operand" "r")
               (const_int 0)))
   (clobber (reg:CC 17))
   (clobber (match_scratch:SI 2 "=&r"))]
  ""
  "#"
  [(set_attr "type" "multi")
   (set_attr "length" "6")])

(define_split
  [(set (match_operand:SI 0 "register_operand" "")
        (ne:SI (match_operand:SI 1 "register_operand" "")
               (const_int 0)))
   (clobber (reg:CC 17))
   (clobber (match_scratch:SI 2 ""))]
  "reload_completed"
  [(set (match_dup 2)
        (const_int 0))
   (set (reg:CC 17)
        (ltu:CC (match_dup 2)
                (match_dup 1)))
   (set (match_dup 0)
        (ne:SI (reg:CC 17) (const_int 0)))]
  "")

(define_insn "slt_insn"
  [(set (match_operand:SI 0 "register_operand" "=r,r")
        (lt:SI (match_operand:SI 1 "register_operand" "r,r")
               (match_operand:SI 2 "reg_or_int16_operand" "r,J")))
   (clobber (reg:CC 17))]
  ""
  "#"
  [(set_attr "type" "multi")
   (set_attr "length" "4,6")])

(define_split
  [(set (match_operand:SI 0 "register_operand" "")
        (lt:SI (match_operand:SI 1 "register_operand" "")
               (match_operand:SI 2 "reg_or_int16_operand" "")))
   (clobber (reg:CC 17))]
  ""
  [(set (reg:CC 17)
        (lt:CC (match_dup 1)
               (match_dup 2)))
   (set (match_dup 0)
        (ne:SI (reg:CC 17) (const_int 0)))]
  "")

(define_insn "sle_insn"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (le:SI (match_operand:SI 1 "register_operand" "r")
               (match_operand:SI 2 "register_operand" "r")))
   (clobber (reg:CC 17))]
  ""
  "#"
  [(set_attr "type" "multi")
   (set_attr "length" "8")])

(define_split
  [(set (match_operand:SI 0 "register_operand" "")
        (le:SI (match_operand:SI 1 "register_operand" "")
               (match_operand:SI 2 "register_operand" "")))
   (clobber (reg:CC 17))]
  "!optimize_size"
  [(set (reg:CC 17)
        (lt:CC (match_dup 2)
               (match_dup 1)))
   (set (match_dup 0)
        (ne:SI (reg:CC 17) (const_int 0)))
   (set (match_dup 0)
        (xor:SI (match_dup 0)
                (const_int 1)))]
  "")

;; If optimizing for space, use -(reg - 1) to invert the comparison rather than
;; xor reg,reg,1 which might eliminate a NOP being inserted.
(define_split
  [(set (match_operand:SI 0 "register_operand" "")
        (le:SI (match_operand:SI 1 "register_operand" "")
               (match_operand:SI 2 "register_operand" "")))
   (clobber (reg:CC 17))]
  "optimize_size"
  [(set (reg:CC 17)
        (lt:CC (match_dup 2)
               (match_dup 1)))
   (set (match_dup 0)
        (ne:SI (reg:CC 17) (const_int 0)))
   (set (match_dup 0)
        (plus:SI (match_dup 0)
                 (const_int -1)))
   (set (match_dup 0)
        (neg:SI (match_dup 0)))]
  "")

(define_insn "sge_insn"
  [(set (match_operand:SI 0 "register_operand" "=r,r")
        (ge:SI (match_operand:SI 1 "register_operand" "r,r")
               (match_operand:SI 2 "reg_or_int16_operand" "r,J")))
   (clobber (reg:CC 17))]
  ""
  "#"
  [(set_attr "type" "multi")
   (set_attr "length" "8,10")])

(define_split
  [(set (match_operand:SI 0 "register_operand" "")
        (ge:SI (match_operand:SI 1 "register_operand" "")
               (match_operand:SI 2 "reg_or_int16_operand" "")))
   (clobber (reg:CC 17))]
  "!optimize_size"
  [(set (reg:CC 17)
        (lt:CC (match_dup 1)
               (match_dup 2)))
   (set (match_dup 0)
        (ne:SI (reg:CC 17) (const_int 0)))
   (set (match_dup 0)
        (xor:SI (match_dup 0)
                (const_int 1)))]
  "")

;; If optimizing for space, use -(reg - 1) to invert the comparison rather than
;; xor reg,reg,1 which might eliminate a NOP being inserted.
(define_split
  [(set (match_operand:SI 0 "register_operand" "")
        (ge:SI (match_operand:SI 1 "register_operand" "")
               (match_operand:SI 2 "reg_or_int16_operand" "")))
   (clobber (reg:CC 17))]
  "optimize_size"
  [(set (reg:CC 17)
        (lt:CC (match_dup 1)
               (match_dup 2)))
   (set (match_dup 0)
        (ne:SI (reg:CC 17) (const_int 0)))
   (set (match_dup 0)
        (plus:SI (match_dup 0)
                 (const_int -1)))
   (set (match_dup 0)
        (neg:SI (match_dup 0)))]
  "")

(define_insn "sltu_insn"
  [(set (match_operand:SI 0 "register_operand" "=r,r")
        (ltu:SI (match_operand:SI 1 "register_operand" "r,r")
                (match_operand:SI 2 "reg_or_int16_operand" "r,J")))
   (clobber (reg:CC 17))]
  ""
  "#"
  [(set_attr "type" "multi")
   (set_attr "length" "6,8")])

(define_split
  [(set (match_operand:SI 0 "register_operand" "")
        (ltu:SI (match_operand:SI 1 "register_operand" "")
                (match_operand:SI 2 "reg_or_int16_operand" "")))
   (clobber (reg:CC 17))]
  ""
  [(set (reg:CC 17)
        (ltu:CC (match_dup 1)
                (match_dup 2)))
   (set (match_dup 0)
        (ne:SI (reg:CC 17) (const_int 0)))]
  "")

(define_insn "sleu_insn"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (leu:SI (match_operand:SI 1 "register_operand" "r")
                (match_operand:SI 2 "register_operand" "r")))
   (clobber (reg:CC 17))]
  ""
  "#"
  [(set_attr "type" "multi")
   (set_attr "length" "8")])

(define_split
  [(set (match_operand:SI 0 "register_operand" "")
        (leu:SI (match_operand:SI 1 "register_operand" "")
                (match_operand:SI 2 "register_operand" "")))
   (clobber (reg:CC 17))]
  "!optimize_size"
  [(set (reg:CC 17)
        (ltu:CC (match_dup 2)
                (match_dup 1)))
   (set (match_dup 0)
        (ne:SI (reg:CC 17) (const_int 0)))
   (set (match_dup 0)
        (xor:SI (match_dup 0)
                (const_int 1)))]
  "")

;; If optimizing for space, use -(reg - 1) to invert the comparison rather than
;; xor reg,reg,1 which might eliminate a NOP being inserted.
(define_split
  [(set (match_operand:SI 0 "register_operand" "")
        (leu:SI (match_operand:SI 1 "register_operand" "")
                (match_operand:SI 2 "register_operand" "")))
   (clobber (reg:CC 17))]
  "optimize_size"
  [(set (reg:CC 17)
        (ltu:CC (match_dup 2)
                (match_dup 1)))
   (set (match_dup 0)
        (ne:SI (reg:CC 17) (const_int 0)))
   (set (match_dup 0)
        (plus:SI (match_dup 0)
                 (const_int -1)))
   (set (match_dup 0)
        (neg:SI (match_dup 0)))]
  "")

(define_insn "sgeu_insn"
  [(set (match_operand:SI 0 "register_operand" "=r,r")
        (geu:SI (match_operand:SI 1 "register_operand" "r,r")
                (match_operand:SI 2 "reg_or_int16_operand" "r,J")))
   (clobber (reg:CC 17))]
  ""
  "#"
  [(set_attr "type" "multi")
   (set_attr "length" "8,10")])

(define_split
  [(set (match_operand:SI 0 "register_operand" "")
        (geu:SI (match_operand:SI 1 "register_operand" "")
                (match_operand:SI 2 "reg_or_int16_operand" "")))
   (clobber (reg:CC 17))]
  "!optimize_size"
  [(set (reg:CC 17)
        (ltu:CC (match_dup 1)
                (match_dup 2)))
   (set (match_dup 0)
        (ne:SI (reg:CC 17) (const_int 0)))
   (set (match_dup 0)
        (xor:SI (match_dup 0)
                (const_int 1)))]
  "")

;; If optimizing for space, use -(reg - 1) to invert the comparison rather than
;; xor reg,reg,1 which might eliminate a NOP being inserted.
(define_split
  [(set (match_operand:SI 0 "register_operand" "")
        (geu:SI (match_operand:SI 1 "register_operand" "")
                (match_operand:SI 2 "reg_or_int16_operand" "")))
   (clobber (reg:CC 17))]
  "optimize_size"
  [(set (reg:CC 17)
        (ltu:CC (match_dup 1)
                (match_dup 2)))
   (set (match_dup 0)
        (ne:SI (reg:CC 17) (const_int 0)))
   (set (match_dup 0)
        (plus:SI (match_dup 0)
                 (const_int -1)))
   (set (match_dup 0)
        (neg:SI (match_dup 0)))]
  "")

(define_insn "movcc_insn"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (ne:SI (reg:CC 17) (const_int 0)))]
  ""
  "mvfc %0, cbr"
  [(set_attr "type" "misc")
   (set_attr "length" "2")])

\f
;; Unconditional and other jump instructions.

(define_insn "jump"
  [(set (pc) (label_ref (match_operand 0 "" "")))]
  ""
  "bra %l0"
  [(set_attr "type" "uncond_branch")
   (set (attr "length") (if_then_else (ltu (plus (minus (match_dup 0) (pc))
                                                 (const_int 400))
                                           (const_int 800))
                                      (const_int 2)
                                      (const_int 4)))])

(define_insn "indirect_jump"
  [(set (pc) (match_operand:SI 0 "address_operand" "p"))]
  ""
  "jmp %a0"
  [(set_attr "type" "uncond_branch")
   (set_attr "length" "2")])

(define_insn "return_lr"
  [(parallel [(return) (use (reg:SI 14))])]
  ""
  "jmp lr"
  [(set_attr "type" "uncond_branch")
   (set_attr "length" "2")])

(define_insn "return_rte"
  [(return)]
  ""
  "rte"
  [(set_attr "type" "uncond_branch")
   (set_attr "length" "2")])

(define_expand "return"
  [(return)]
  "direct_return ()"
  "
{
  emit_jump_insn (gen_return_lr ());
  DONE;
}")

(define_expand "return_normal"
  [(return)]
  "!direct_return ()"
  "
{
  enum m32r_function_type fn_type;

  fn_type = m32r_compute_function_type (current_function_decl);
  if (M32R_INTERRUPT_P (fn_type))
    {
      emit_jump_insn (gen_return_rte ());
      DONE;
    }

  emit_jump_insn (gen_return_lr ());
  DONE;
}")

(define_expand "tablejump"
  [(parallel [(set (pc) (match_operand 0 "register_operand" "r"))
              (use (label_ref (match_operand 1 "" "")))])]
  ""
  "
{
  /* In pic mode, our address differences are against the base of the
     table.  Add that base value back in; CSE ought to be able to combine
     the two address loads.  */
  if (flag_pic)
    {
      rtx tmp, tmp2;

      tmp = gen_rtx_LABEL_REF (Pmode, operands[1]);
      tmp2 = operands[0];
      tmp = gen_rtx_PLUS (Pmode, tmp2, tmp);
      operands[0] = memory_address (Pmode, tmp);
    }
}")

(define_insn "*tablejump_insn"
  [(set (pc) (match_operand:SI 0 "address_operand" "p"))
   (use (label_ref (match_operand 1 "" "")))]
  ""
  "jmp %a0"
  [(set_attr "type" "uncond_branch")
   (set_attr "length" "2")])

(define_expand "call"
  ;; operands[1] is stack_size_rtx
  ;; operands[2] is next_arg_register
  [(parallel [(call (match_operand:SI 0 "call_operand" "")
                    (match_operand 1 "" ""))
             (clobber (reg:SI 14))])]
  ""
  "
{
  if (flag_pic)
    crtl->uses_pic_offset_table = 1;
}")

(define_insn "*call_via_reg"
  [(call (mem:SI (match_operand:SI 0 "register_operand" "r"))
         (match_operand 1 "" ""))
   (clobber (reg:SI 14))]
  ""
  "jl %0"
  [(set_attr "type" "call")
   (set_attr "length" "2")])

(define_insn "*call_via_label"
  [(call (mem:SI (match_operand:SI 0 "call_address_operand" ""))
         (match_operand 1 "" ""))
   (clobber (reg:SI 14))]
  ""
  "*
{
  int call26_p = call26_operand (operands[0], FUNCTION_MODE);

  if (! call26_p)
    {
      /* We may not be able to reach with a `bl' insn so punt and leave it to
         the linker.
         We do this here, rather than doing a force_reg in the define_expand
         so these insns won't be separated, say by scheduling, thus simplifying
         the linker.  */
      return \"seth r14,%T0\;add3 r14,r14,%B0\;jl r14\";
    }
  else
    return \"bl %0\";
}"
  [(set_attr "type" "call")
   (set (attr "length")
        (if_then_else (not (match_test "call26_operand (operands[0], FUNCTION_MODE)"))
                      (const_int 12) ; 10 + 2 for nop filler
                      ; The return address must be on a 4 byte boundary so
                      ; there's no point in using a value of 2 here.  A 2 byte
                      ; insn may go in the left slot but we currently can't
                      ; use such knowledge.
                      (const_int 4)))])

(define_expand "call_value"
  ;; operand 2 is stack_size_rtx
  ;; operand 3 is next_arg_register
  [(parallel [(set (match_operand 0 "register_operand" "=r")
                   (call (match_operand:SI 1 "call_operand" "")
                         (match_operand 2 "" "")))
             (clobber (reg:SI 14))])]
  ""
  "
{
  if (flag_pic)
    crtl->uses_pic_offset_table = 1;
}")

(define_insn "*call_value_via_reg"
  [(set (match_operand 0 "register_operand" "=r")
        (call (mem:SI (match_operand:SI 1 "register_operand" "r"))
              (match_operand 2 "" "")))
   (clobber (reg:SI 14))]
  ""
  "jl %1"
  [(set_attr "type" "call")
   (set_attr "length" "2")])

(define_insn "*call_value_via_label"
  [(set (match_operand 0 "register_operand" "=r")
        (call (mem:SI (match_operand:SI 1 "call_address_operand" ""))
              (match_operand 2 "" "")))
   (clobber (reg:SI 14))]
  ""
  "*
{
  int call26_p = call26_operand (operands[1], FUNCTION_MODE);

  if (flag_pic)
    crtl->uses_pic_offset_table = 1;

  if (! call26_p)
    {
      /* We may not be able to reach with a `bl' insn so punt and leave it to
         the linker.
         We do this here, rather than doing a force_reg in the define_expand
         so these insns won't be separated, say by scheduling, thus simplifying
         the linker.  */
      return \"seth r14,%T1\;add3 r14,r14,%B1\;jl r14\";
    }
  else
    return \"bl %1\";
}"
  [(set_attr "type" "call")
   (set (attr "length")
        (if_then_else (not (match_test "call26_operand (operands[1], FUNCTION_MODE)"))
                      (const_int 12) ; 10 + 2 for nop filler
                      ; The return address must be on a 4 byte boundary so
                      ; there's no point in using a value of 2 here.  A 2 byte
                      ; insn may go in the left slot but we currently can't
                      ; use such knowledge.
                      (const_int 4)))])
\f
(define_insn "nop"
  [(const_int 0)]
  ""
  "nop"
  [(set_attr "type" "int2")
   (set_attr "length" "2")])

;; UNSPEC_VOLATILE is considered to use and clobber all hard registers and
;; all of memory.  This blocks insns from being moved across this point.

(define_insn "blockage"
  [(unspec_volatile [(const_int 0)] UNSPECV_BLOCKAGE)]
  ""
  "")

;; Special pattern to flush the icache.

(define_insn "flush_icache"
  [(unspec_volatile [(match_operand 0 "memory_operand" "m")]
                    UNSPECV_FLUSH_ICACHE)
   (match_operand 1 "" "")
   (clobber (reg:SI 17))]
  ""
  "* return \"trap %#%1 ; flush-icache\";"
  [(set_attr "type" "int4")
   (set_attr "length" "4")])
\f
;; Speed up fabs and provide correct sign handling for -0

(define_insn "absdf2"
  [(set (match_operand:DF 0 "register_operand" "=r")
        (abs:DF (match_operand:DF 1 "register_operand" "0")))]
  ""
  "#"
  [(set_attr "type" "multi")
   (set_attr "length" "4")])

(define_split
  [(set (match_operand:DF 0 "register_operand" "")
        (abs:DF (match_operand:DF 1 "register_operand" "")))]
  "reload_completed"
  [(set (match_dup 2)
        (ashift:SI (match_dup 2)
                   (const_int 1)))
   (set (match_dup 2)
        (lshiftrt:SI (match_dup 2)
                     (const_int 1)))]
  "operands[2] = gen_highpart (SImode, operands[0]);")

(define_insn "abssf2"
  [(set (match_operand:SF 0 "register_operand" "=r")
        (abs:SF (match_operand:SF 1 "register_operand" "0")))]
  ""
  "#"
  [(set_attr "type" "multi")
   (set_attr "length" "4")])

(define_split
  [(set (match_operand:SF 0 "register_operand" "")
        (abs:SF (match_operand:SF 1 "register_operand" "")))]
  "reload_completed"
  [(set (match_dup 2)
        (ashift:SI (match_dup 2)
                   (const_int 1)))
   (set (match_dup 2)
        (lshiftrt:SI (match_dup 2)
                     (const_int 1)))]
  "operands[2] = gen_highpart (SImode, operands[0]);")
\f
;; Conditional move instructions
;; Based on those done for the d10v

(define_expand "movsicc"
  [
   (set (match_operand:SI 0 "register_operand" "r")
        (if_then_else:SI (match_operand 1 "" "")
                         (match_operand:SI 2 "conditional_move_operand" "O")
                         (match_operand:SI 3 "conditional_move_operand" "O")
        )
   )
  ]
  ""
  "
{
  if (! zero_and_one (operands [2], operands [3]))
    FAIL;

  /* Generate the comparison that will set the carry flag.  */
  operands[1] = gen_compare (GET_CODE (operands[1]), XEXP (operands[1], 0),
                             XEXP (operands[1], 1), TRUE);

  /* See other movsicc pattern below for reason why.  */
  emit_insn (gen_blockage ());
}")

;; Generate the conditional instructions based on how the carry flag is examined.
(define_insn "*movsicc_internal"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (if_then_else:SI (match_operand 1 "carry_compare_operand" "")
                         (match_operand:SI 2 "conditional_move_operand" "O")
                         (match_operand:SI 3 "conditional_move_operand" "O")
        )
   )]
  "zero_and_one (operands [2], operands[3])"
  "* return emit_cond_move (operands, insn);"
  [(set_attr "type" "multi")
   (set_attr "length" "8")
  ]
)

\f
;; Block moves, see m32r.c for more details.
;; Argument 0 is the destination
;; Argument 1 is the source
;; Argument 2 is the length
;; Argument 3 is the alignment

(define_expand "cpymemsi"
  [(parallel [(set (match_operand:BLK 0 "general_operand" "")
                   (match_operand:BLK 1 "general_operand" ""))
              (use (match_operand:SI  2 "immediate_operand" ""))
              (use (match_operand:SI  3 "immediate_operand" ""))])]
  ""
  "
{
  if (operands[0])              /* Avoid unused code messages.  */
    {
     if (m32r_expand_block_move (operands))
       DONE;
     else
       FAIL;
    }
}")

;; Insn generated by block moves

(define_insn "cpymemsi_internal"
  [(set (mem:BLK (match_operand:SI 0 "register_operand" "r"))   ;; destination
        (mem:BLK (match_operand:SI 1 "register_operand" "r")))  ;; source
   (use (match_operand:SI 2 "m32r_block_immediate_operand" "J"));; # bytes to move
   (set (match_operand:SI 3 "register_operand" "=0")
        (plus:SI (minus (match_dup 2) (const_int 4))
                 (match_dup 0)))
   (set (match_operand:SI 4 "register_operand" "=1")
        (plus:SI (match_dup 1)
                 (match_dup 2)))
   (clobber (match_scratch:SI 5 "=&r"))  ;; temp1
   (clobber (match_scratch:SI 6 "=&r"))] ;; temp2
  ""
  "* m32r_output_block_move (insn, operands); return \"\"; "
  [(set_attr "type"     "store8")
   (set_attr "length"   "72")]) ;; Maximum

;; PIC

/* When generating pic, we need to load the symbol offset into a register.
   So that the optimizer does not confuse this with a normal symbol load
   we use an unspec.  The offset will be loaded from a constant pool entry,
   since that is the only type of relocation we can use.  */

(define_insn "pic_load_addr"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (unspec:SI [(match_operand 1 "" "")] UNSPEC_PIC_LOAD_ADDR))]
  "flag_pic"
  "ld24 %0,%#%1"
  [(set_attr "type" "int4")])

(define_insn "gotoff_load_addr"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (unspec:SI [(match_operand 1 "" "")] UNSPEC_GOTOFF))]
  "flag_pic"
  "seth %0, %#shigh(%1@GOTOFF)\;add3 %0, %0, low(%1@GOTOFF)"
  [(set_attr "type"     "int4")
   (set_attr "length"   "8")])

;; Load program counter insns.

(define_insn "get_pc"
  [(clobber (reg:SI 14))
   (set (match_operand 0 "register_operand" "=r,r")
        (unspec [(match_operand 1 "" "")] UNSPEC_GET_PC))
   (use (match_operand:SI 2 "immediate_operand" "W,i"))]
  "flag_pic"
  "@
   bl.s .+4\;seth %0,%#shigh(%1)\;add3 %0,%0,%#low(%1+4)\;add %0,lr
   bl.s .+4\;ld24 %0,%#%1\;add %0,lr"
  [(set_attr "length" "12,8")])

(define_expand "builtin_setjmp_receiver"
  [(label_ref (match_operand 0 "" ""))]
  "flag_pic"
  "
{
  m32r_load_pic_register ();
  DONE;
}")