Small ChangeLog tweak.

[official-gcc.git] / gcc / config / sh / sh.md

;;- Machine description for Renesas / SuperH SH.
;;  Copyright (C) 1993-2017 Free Software Foundation, Inc.
;;  Contributed by Steve Chamberlain (sac@cygnus.com).
;;  Improved by Jim Wilson (wilson@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/>.


;; ??? Should prepend a * to all pattern names which are not used.
;; This will make the compiler smaller, and rebuilds after changes faster.

;; ??? Should be enhanced to include support for many more GNU superoptimizer
;; sequences.  Especially the sequences for arithmetic right shifts.

;; ??? Should check all DImode patterns for consistency and usefulness.

;; ??? The MAC.W and MAC.L instructions are not supported.  There is no
;; way to generate them.

;; BSR is not generated by the compiler proper, but when relaxing, it
;; generates .uses pseudo-ops that allow linker relaxation to create
;; BSR.  This is actually implemented in bfd/{coff,elf32}-sh.c

;; Special constraints for SH machine description:
;;
;;    t -- T
;;    x -- mac
;;    l -- pr
;;    z -- r0
;;
;; Special formats used for outputting SH instructions:
;;
;;   %.  --  print a .s if insn needs delay slot
;;   %@  --  print rte/rts if is/isn't an interrupt function
;;   %#  --  output a nop if there is nothing to put in the delay slot
;;   %O  --  print a constant without the #
;;   %R  --  print the lsw reg of a double
;;   %S  --  print the msw reg of a double
;;   %T  --  print next word of a double REG or MEM
;;
;; Special predicates:
;;
;;  arith_operand          -- operand is valid source for arithmetic op
;;  arith_reg_operand      -- operand is valid register for arithmetic op
;;  general_movdst_operand -- operand is valid move destination
;;  general_movsrc_operand -- operand is valid move source
;;  logical_operand        -- operand is valid source for logical op

;; -------------------------------------------------------------------------
;; Constants
;; -------------------------------------------------------------------------

(define_constants [
  (AP_REG       145)
  (PR_REG       146)
  (T_REG        147)
  (GBR_REG      144)
  (MACH_REG     148)
  (MACL_REG     149)
  (FPUL_REG     150)
  (RAP_REG      152)

  (FPSCR_REG    151)

  ;; Virtual FPSCR - bits that are used by FP ops.
  (FPSCR_MODES_REG 154)

  ;; Virtual FPSCR - bits that are updated by FP ops.
  (FPSCR_STAT_REG 155)

  (PIC_REG      12)
  (FP_REG       14)
  (SP_REG       15)

  (R0_REG       0)
  (R1_REG       1)
  (R2_REG       2)
  (R3_REG       3)
  (R4_REG       4)
  (R5_REG       5)
  (R6_REG       6)
  (R7_REG       7)
  (R8_REG       8)
  (R9_REG       9)
  (R10_REG      10)
  (R20_REG      20)
  (R21_REG      21)
  (R22_REG      22)
  (R23_REG      23)

  (DR0_REG      64)
  (DR2_REG      66)
  (DR4_REG      68)

  (XD0_REG      136)

  (FPSCR_PR     524288)  ;; 1 << 19
  (FPSCR_SZ     1048576) ;; 1 << 20
  (FPSCR_FR     2097152) ;; 1 << 21
])

(define_c_enum "unspec" [
  ;; These are used with unspec.
  UNSPEC_MOVA
  UNSPEC_CASESI
  UNSPEC_BBR
  UNSPEC_SFUNC
  UNSPEC_PIC
  UNSPEC_GOT
  UNSPEC_GOTOFF
  UNSPEC_PLT
  UNSPEC_CALLER
  UNSPEC_GOTPLT
  UNSPEC_PCREL
  UNSPEC_ICACHE
  UNSPEC_FCOSA
  UNSPEC_FSRRA
  UNSPEC_FSINA
  UNSPEC_ALLOCO
  UNSPEC_TLSGD
  UNSPEC_TLSLDM
  UNSPEC_TLSIE
  UNSPEC_DTPOFF
  UNSPEC_GOTTPOFF
  UNSPEC_TPOFF
  UNSPEC_RA
  UNSPEC_THUNK
  UNSPEC_CHKADD
  UNSPEC_SP_SET
  UNSPEC_SP_TEST
  UNSPEC_MOVUA
  ;; (unspec [TARGET ANCHOR] UNSPEC_SYMOFF) == TARGET - ANCHOR.
  UNSPEC_SYMOFF
  ;; (unspec [OFFSET ANCHOR] UNSPEC_PCREL_SYMOFF) == OFFSET - (ANCHOR - .).
  UNSPEC_PCREL_SYMOFF
  ;; For FDPIC
  UNSPEC_GOTFUNCDESC
  UNSPEC_GOTOFFFUNCDESC
  ;; Misc builtins
  UNSPEC_BUILTIN_STRLEN
])

(define_c_enum "unspecv" [
  ;; These are used with unspec_volatile.
  UNSPECV_BLOCKAGE
  UNSPECV_ALIGN
  UNSPECV_CONST2
  UNSPECV_CONST4
  UNSPECV_CONST8
  UNSPECV_WINDOW_END
  UNSPECV_CONST_END
  UNSPECV_EH_RETURN
  UNSPECV_GBR
  UNSPECV_SP_SWITCH_B
  UNSPECV_SP_SWITCH_E

  UNSPECV_FPSCR_MODES
  UNSPECV_FPSCR_STAT
])

;; -------------------------------------------------------------------------
;; Attributes
;; -------------------------------------------------------------------------

;; Target CPU.

(define_attr "cpu"
 "sh1,sh2,sh2e,sh2a,sh3,sh3e,sh4,sh4a"
  (const (symbol_ref "sh_cpu_attr")))

(define_attr "endian" "big,little"
 (const (if_then_else (symbol_ref "TARGET_LITTLE_ENDIAN")
                      (const_string "little") (const_string "big"))))

;; Indicate if the default fpu mode is single precision.
(define_attr "fpu_single" "yes,no"
  (const (if_then_else (symbol_ref "TARGET_FPU_SINGLE")
                       (const_string "yes") (const_string "no"))))

(define_attr "fmovd" "yes,no"
  (const (if_then_else (symbol_ref "TARGET_FMOVD")
                       (const_string "yes") (const_string "no"))))
;; pipeline model
(define_attr "pipe_model" "sh1,sh4"
  (const
   (cond [(symbol_ref "TARGET_SUPERSCALAR") (const_string "sh4")]
         (const_string "sh1"))))

;; cbranch      conditional branch instructions
;; jump         unconditional jumps
;; arith        ordinary arithmetic
;; arith3       a compound insn that behaves similarly to a sequence of
;;              three insns of type arith
;; arith3b      like above, but might end with a redirected branch
;; load         from memory
;; load_si      Likewise, SImode variant for general register.
;; fload        Likewise, but load to fp register.
;; store        to memory
;; fstore       floating point register to memory
;; move         general purpose register to register
;; movi8        8-bit immediate to general purpose register
;; mt_group     other sh4 mt instructions
;; fmove        register to register, floating point
;; smpy         word precision integer multiply
;; dmpy         longword or doublelongword precision integer multiply
;; return       rts
;; pload        load of pr reg, which can't be put into delay slot of rts
;; prset        copy register to pr reg, ditto
;; pstore       store of pr reg, which can't be put into delay slot of jsr
;; prget        copy pr to register, ditto
;; pcload       pc relative load of constant value
;; pcfload      Likewise, but load to fp register.
;; pcload_si    Likewise, SImode variant for general register.
;; rte          return from exception
;; sfunc        special function call with known used registers
;; call         function call
;; fp           floating point
;; fpscr_toggle toggle a bit in the fpscr
;; fdiv         floating point divide (or square root)
;; gp_fpul      move from general purpose register to fpul
;; fpul_gp      move from fpul to general purpose register
;; mac_gp       move from mac[lh] to general purpose register
;; gp_mac       move from general purpose register to mac[lh]
;; mac_mem      move from mac[lh] to memory
;; mem_mac      move from memory to mac[lh]
;; dfp_arith,dfp_mul, fp_cmp,dfp_cmp,dfp_conv
;; ftrc_s       fix_truncsfsi2_i4
;; dfdiv        double precision floating point divide (or square root)
;; cwb          ic_invalidate_line_i
;; movua        SH4a unaligned load
;; fsrra        square root reciprocal approximate
;; fsca         sine and cosine approximate
;; tls_load     load TLS related address
;; nil          no-op move, will be deleted.

(define_attr "type"
 "mt_group,cbranch,jump,jump_ind,arith,arith3,arith3b,dyn_shift,load,load_si,
  fload,store,fstore,move,movi8,fmove,smpy,dmpy,return,pload,prset,pstore,
  prget,pcload,pcload_si,pcfload,rte,sfunc,call,fp,fpscr_toggle,fdiv,ftrc_s,
  dfp_arith,dfp_mul,fp_cmp,dfp_cmp,dfp_conv,dfdiv,gp_fpul,fpul_gp,mac_gp,
  gp_mac,mac_mem,mem_mac,mem_fpscr,gp_fpscr,cwb,movua,fsrra,fsca,tls_load,
  nil,other"
  (const_string "other"))

;; We define a new attribute namely "insn_class".We use
;; this for the DFA based pipeline description.
;;
;; mt_group      SH4 "mt" group instructions.
;;
;; ex_group      SH4 "ex" group instructions.
;;
;; ls_group      SH4 "ls" group instructions.
;;
(define_attr "insn_class"
  "mt_group,ex_group,ls_group,br_group,fe_group,co_group,none"
  (cond [(eq_attr "type" "move,mt_group") (const_string "mt_group")
         (eq_attr "type" "movi8,arith,dyn_shift") (const_string "ex_group")
         (eq_attr "type" "fmove,load,pcload,load_si,pcload_si,fload,pcfload,
                          store,fstore,gp_fpul,fpul_gp") (const_string "ls_group")
         (eq_attr "type" "cbranch,jump") (const_string "br_group")
         (eq_attr "type" "fp,fp_cmp,fdiv,ftrc_s,dfp_arith,dfp_mul,dfp_conv,dfdiv")
           (const_string "fe_group")
         (eq_attr "type" "jump_ind,smpy,dmpy,mac_gp,return,pload,prset,pstore,
                          prget,rte,sfunc,call,dfp_cmp,mem_fpscr,gp_fpscr,cwb,
                          gp_mac,mac_mem,mem_mac") (const_string "co_group")]
        (const_string "none")))

;; nil are zero instructions, and arith3 / arith3b are multiple instructions,
;; so these do not belong in an insn group, although they are modeled
;; with their own define_insn_reservations.

;; Indicate what precision must be selected in fpscr for this insn, if any.
(define_attr "fp_mode" "single,double,none" (const_string "none"))

;; Indicate if the fpu mode is set by this instruction
;; "unknown" must have the value as "none" in fp_mode, and means
;; that the instruction/abi has left the processor in an unknown
;; state.
;; "none" means that nothing has changed and no mode is set.
;; This attribute is only used for the Renesas ABI.
(define_attr "fp_set" "single,double,unknown,none" (const_string "none"))

; If a conditional branch destination is within -252..258 bytes away
; from the instruction it can be 2 bytes long.  Something in the
; range -4090..4100 bytes can be 6 bytes long.  All other conditional
; branches are initially assumed to be 16 bytes long.
; In machine_dependent_reorg, we split all branches that are longer than
; 2 bytes.

;; The maximum range used for SImode constant pool entries is 1018.  A final
;; instruction can add 8 bytes while only being 4 bytes in size, thus we
;; can have a total of 1022 bytes in the pool.  Add 4 bytes for a branch
;; instruction around the pool table, 2 bytes of alignment before the table,
;; and 30 bytes of alignment after the table.  That gives a maximum total
;; pool size of 1058 bytes.
;; Worst case code/pool content size ratio is 1:2 (using asms).
;; Thus, in the worst case, there is one instruction in front of a maximum
;; sized pool, and then there are 1052 bytes of pool for every 508 bytes of
;; code.  For the last n bytes of code, there are 2n + 36 bytes of pool.
;; If we have a forward branch, the initial table will be put after the
;; unconditional branch.
;;
;; ??? We could do much better by keeping track of the actual pcloads within
;; the branch range and in the pcload range in front of the branch range.

;; ??? This looks ugly because genattrtab won't allow if_then_else or cond
;; inside an le.
(define_attr "short_cbranch_p" "no,yes"
  (cond [(match_test "mdep_reorg_phase <= SH_FIXUP_PCLOAD")
         (const_string "no")
         (leu (plus (minus (match_dup 0) (pc)) (const_int 252)) (const_int 506))
         (const_string "yes")
         (match_test "NEXT_INSN (PREV_INSN (insn)) != insn")
         (const_string "no")
         (leu (plus (minus (match_dup 0) (pc)) (const_int 252)) (const_int 508))
         (const_string "yes")
         ] (const_string "no")))

(define_attr "med_branch_p" "no,yes"
  (cond [(leu (plus (minus (match_dup 0) (pc)) (const_int 990))
              (const_int 1988))
         (const_string "yes")
         (match_test "mdep_reorg_phase <= SH_FIXUP_PCLOAD")
         (const_string "no")
         (leu (plus (minus (match_dup 0) (pc)) (const_int 4092))
              (const_int 8186))
         (const_string "yes")
         ] (const_string "no")))

(define_attr "med_cbranch_p" "no,yes"
  (cond [(leu (plus (minus (match_dup 0) (pc)) (const_int 988))
              (const_int 1986))
         (const_string "yes")
         (match_test "mdep_reorg_phase <= SH_FIXUP_PCLOAD")
         (const_string "no")
         (leu (plus (minus (match_dup 0) (pc)) (const_int 4090))
               (const_int 8184))
         (const_string "yes")
         ] (const_string "no")))

(define_attr "braf_branch_p" "no,yes"
  (cond [(match_test "! TARGET_SH2")
         (const_string "no")
         (leu (plus (minus (match_dup 0) (pc)) (const_int 10330))
              (const_int 20660))
         (const_string "yes")
         (match_test "mdep_reorg_phase <= SH_FIXUP_PCLOAD")
         (const_string "no")
         (leu (plus (minus (match_dup 0) (pc)) (const_int 32764))
              (const_int 65530))
         (const_string "yes")
         ] (const_string "no")))

(define_attr "braf_cbranch_p" "no,yes"
  (cond [(match_test "! TARGET_SH2")
         (const_string "no")
         (leu (plus (minus (match_dup 0) (pc)) (const_int 10328))
              (const_int 20658))
         (const_string "yes")
         (match_test "mdep_reorg_phase <= SH_FIXUP_PCLOAD")
         (const_string "no")
         (leu (plus (minus (match_dup 0) (pc)) (const_int 32762))
              (const_int 65528))
         (const_string "yes")
         ] (const_string "no")))

;; An unconditional jump in the range -4092..4098 can be 2 bytes long.
;; For wider ranges, we need a combination of a code and a data part.
;; If we can get a scratch register for a long range jump, the code
;; part can be 4 bytes long; otherwise, it must be 8 bytes long.
;; If the jump is in the range -32764..32770, the data part can be 2 bytes
;; long; otherwise, it must be 6 bytes long.

;; All other instructions are two bytes long by default.

;; ??? This should use something like *branch_p (minus (match_dup 0) (pc)),
;; but getattrtab doesn't understand this.
(define_attr "length" ""
  (cond [(eq_attr "type" "cbranch")
         (cond [(eq_attr "short_cbranch_p" "yes")
                (const_int 2)
                (eq_attr "med_cbranch_p" "yes")
                (const_int 6)
                (eq_attr "braf_cbranch_p" "yes")
                (const_int 12)
;; ??? using pc is not computed transitively.
                (ne (match_dup 0) (match_dup 0))
                (const_int 14)
                (match_test "flag_pic")
                (const_int 24)
                ] (const_int 16))
         (eq_attr "type" "jump")
         (cond [(eq_attr "med_branch_p" "yes")
                (const_int 2)
                (and (match_test "prev_nonnote_insn (insn)")
                     (and (eq (symbol_ref "GET_CODE (prev_nonnote_insn (insn))")
                              (symbol_ref "INSN"))
                          (eq (symbol_ref "INSN_CODE (prev_nonnote_insn (insn))")
                              (symbol_ref "code_for_indirect_jump_scratch"))))
                (cond [(eq_attr "braf_branch_p" "yes")
                       (const_int 6)
                       (not (match_test "flag_pic"))
                       (const_int 10)
                       (match_test "TARGET_SH2")
                       (const_int 10)] (const_int 18))
                (eq_attr "braf_branch_p" "yes")
                (const_int 10)
;; ??? using pc is not computed transitively.
                (ne (match_dup 0) (match_dup 0))
                (const_int 12)
                (match_test "flag_pic")
                (const_int 22)
                ] (const_int 14))
         ] (const_int 2)))

;; DFA descriptions for the pipelines

(include "sh1.md")
(include "sh4.md")

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

;; Definitions for filling delay slots

(define_attr "needs_delay_slot" "yes,no" (const_string "no"))

(define_attr "banked" "yes,no" 
        (cond [(match_test "sh_loads_bankedreg_p (insn)")
               (const_string "yes")]
              (const_string "no")))

;; ??? This should be (nil) instead of (const_int 0)
(define_attr "hit_stack" "yes,no"
        (cond [(not (match_test "find_regno_note (insn, REG_INC, SP_REG)"))
               (const_string "no")]
              (const_string "yes")))

(define_attr "interrupt_function" "no,yes"
  (const (symbol_ref "current_function_interrupt")))

(define_attr "in_delay_slot" "yes,no"
  (cond [(eq_attr "type" "cbranch") (const_string "no")
         (eq_attr "type" "pcload,pcload_si") (const_string "no")
         (eq_attr "type" "fpscr_toggle") (const_string "no")
         (eq_attr "needs_delay_slot" "yes") (const_string "no")
         (eq_attr "length" "2") (const_string "yes")
         ] (const_string "no")))

(define_attr "cond_delay_slot" "yes,no"
  (cond [(eq_attr "in_delay_slot" "yes") (const_string "yes")
         ] (const_string "no")))

(define_attr "is_sfunc" ""
  (if_then_else (eq_attr "type" "sfunc") (const_int 1) (const_int 0)))

;; SH4 Double-precision computation with double-precision result -
;; the two halves are ready at different times.
(define_attr "dfp_comp" "yes,no"
  (cond [(eq_attr "type" "dfp_arith,dfp_mul,dfp_conv,dfdiv") (const_string "yes")]
        (const_string "no")))

;; Insns for which the latency of a preceding fp insn is decreased by one.
(define_attr "late_fp_use" "yes,no" (const_string "no"))
;; And feeding insns for which this relevant.
(define_attr "any_fp_comp" "yes,no"
  (cond [(eq_attr "type" "fp,fdiv,ftrc_s,dfp_arith,dfp_mul,dfp_conv,dfdiv")
         (const_string "yes")]
        (const_string "no")))

(define_attr "any_int_load" "yes,no"
  (cond [(eq_attr "type" "load,load_si,pcload,pcload_si")
         (const_string "yes")]
        (const_string "no")))

(define_attr "highpart" "user, ignore, extend, depend, must_split"
  (const_string "user"))

(define_delay
  (eq_attr "needs_delay_slot" "yes")
  [(eq_attr "in_delay_slot" "yes") (nil) (nil)])

;; Since a normal return (rts) implicitly uses the PR register,
;; we can't allow PR register loads in an rts delay slot.
;; On the SH1* and SH2*, the rte instruction reads the return pc from the
;; stack, and thus we can't put a pop instruction in its delay slot.
;; On the SH3* and SH4*, the rte instruction does not use the stack, so a
;; pop instruction can go in the delay slot, unless it references a banked
;; register (the register bank is switched by rte).
(define_delay
  (eq_attr "type" "return")
  [(and (eq_attr "in_delay_slot" "yes")
        (ior (and (eq_attr "interrupt_function" "no")
                  (eq_attr "type" "!pload,prset"))
             (and (eq_attr "interrupt_function" "yes")
                  (ior (match_test "TARGET_SH3") (eq_attr "hit_stack" "no"))
                  (eq_attr "banked" "no"))))
   (nil) (nil)])

;; Since a call implicitly uses the PR register, we can't allow
;; a PR register store in a jsr delay slot.

(define_delay
  (ior (eq_attr "type" "call") (eq_attr "type" "sfunc"))
  [(and (eq_attr "in_delay_slot" "yes")
        (eq_attr "type" "!pstore,prget")) (nil) (nil)])

;; Conditional branches with delay slots are available starting with SH2.
;; If zero displacement conditional branches are fast, disable the delay
;; slot if the branch jumps over only one 2-byte insn.
(define_delay
  (and (eq_attr "type" "cbranch")
       (match_test "TARGET_SH2")
       (not (and (match_test "TARGET_ZDCBRANCH")
                 (match_test "sh_cbranch_distance (insn, 4) == 2"))))
  [(eq_attr "cond_delay_slot" "yes") (nil) (nil)])
\f
;; -------------------------------------------------------------------------
;; SImode signed integer comparisons
;; -------------------------------------------------------------------------

;; Patterns to generate the tst instruction which are usually formed by
;; the combine pass.
;; The canonical form here being used is (eq (and (op) (op)) 0).
;; For some bit patterns, such as contiguous bits, we also must accept
;; zero_extract forms.  Single bit tests are also handled via zero_extract
;; patterns in the 'bit field extract patterns' section.  All variants
;; are eventually converted to the 'tstsi_t' insn.
;; As long as pseudos can be created (before RA), 'tstsi_t' will also accept
;; constants that won't fit into 8 bits.  After having captured the constant
;; we can decide better whether/how to load it into a register and do other
;; post-combine optimizations such as bypassing sign/zero extensions.
(define_insn_and_split "tstsi_t"
  [(set (reg:SI T_REG)
        (eq:SI (and:SI (match_operand:SI 0 "arith_reg_operand" "%z,r")
                       (match_operand:SI 1 "arith_or_int_operand" "K08,?r"))
               (const_int 0)))]
  "TARGET_SH1
   && (can_create_pseudo_p () || arith_reg_operand (operands[1], SImode)
       || satisfies_constraint_K08 (operands[1]))"
  "tst  %1,%0"
  "TARGET_SH1 && can_create_pseudo_p () && CONST_INT_P (operands[1])
   && !sh_in_recog_treg_set_expr ()"
  [(const_int 0)]
{
  gcc_assert (CONST_INT_P (operands[1]));

  HOST_WIDE_INT op1val = INTVAL (operands[1]);
  rtx reg = operands[0];
  if (SUBREG_P (reg))
    reg = SUBREG_REG (reg);
  gcc_assert (REG_P (reg));
  bool op0_dead_after_this =
        sh_reg_dead_or_unused_after_insn (curr_insn, REGNO (reg));

  if (optimize)
    {
      if (dump_file)
        fprintf (dump_file,
                 "tstsi_t: trying to optimize const_int 0x%08x\n",
                 (uint32_t)op1val);

      /* See if we can convert a test with a reg and a constant into
         something simpler, if the reg is known to be zero or sign
         extended.  */
      sh_extending_set_of_reg eop0 = sh_find_extending_set_of_reg (operands[0],
                                                                   curr_insn);
      if (eop0.ext_code != UNKNOWN)
        {
          /* Adjust the constant, trying to eliminate bits that are not
             contributing to the result.  */
          if (eop0.from_mode == QImode)
            op1val = (op1val
                      | (eop0.ext_code == SIGN_EXTEND && (op1val & 0xFFFFFF80)
                         ? 0x80 : 0)) & 0xFF;
          else if (eop0.from_mode == HImode)
            op1val = (op1val
                      | (eop0.ext_code == SIGN_EXTEND && (op1val & 0xFFFF8000)
                         ? 0x8000 : 0)) & 0xFFFF;

          if (dump_file)
            fprintf (dump_file, "tstsi_t: using effective const_int: 0x%08x\n",
                     (uint32_t)op1val);

          /* Try to bypass the sign/zero extension first if op0 dies after
             this insn.  */
          if (op0_dead_after_this && eop0.can_use_as_unextended_reg ())
            {
              if (dump_file)
                fprintf (dump_file, "tstsi_t: bypassing sign/zero extension\n");

              operands[0] = eop0.use_as_unextended_reg (curr_insn);
            }
          else if ((eop0.from_mode == QImode && op1val == 0xFF)
                   || (eop0.from_mode == HImode && op1val == 0xFFFF))
            {
              if (dump_file)
                fprintf (dump_file, "tstsi_t: converting to cmpeqsi_t\n");
              emit_insn (gen_cmpeqsi_t (eop0.use_as_extended_reg (curr_insn),
                                        const0_rtx));
              DONE;
            }
          else if (eop0.ext_code == SIGN_EXTEND
                   && ((eop0.from_mode == QImode && op1val == 0x80)
                       || (eop0.from_mode == HImode && op1val == 0x8000)))
            {
              if (dump_file)
                fprintf (dump_file, "tstsi_t: converting to cmpgesi_t\n");
              emit_insn (gen_cmpgesi_t (eop0.use_as_extended_reg (curr_insn),
                                        const0_rtx));
              DONE;
            }
          else if (!CONST_OK_FOR_K08 (op1val))
            {
              if (dump_file)
                fprintf (dump_file, "tstsi_t: converting const_int to signed "
                         "value\n");

              /* If here we haven't done anything yet.  Convert the constant
                 to a signed value to reduce the constant pool size.  */
              operands[0] = eop0.use_as_extended_reg (curr_insn);

              if (eop0.from_mode == QImode)
                op1val |= (op1val & 0x80) ? 0xFFFFFFFFFFFFFF00LL : 0;
              else if (eop0.from_mode == HImode)
                op1val |= (op1val & 0x8000) ? 0xFFFFFFFFFFFF0000LL : 0;
            }
          else
            operands[0] = eop0.use_as_extended_reg (curr_insn);
        }
    }

    if (dump_file)
      fprintf (dump_file, "tstsi_t: using const_int 0x%08x\n",
               (uint32_t)op1val);

  /* Try to fit the constant into 8 bits by shuffling the value in the
     register operand.
     Doing that usually results in smaller code as the constants in the
     pools are avoided (32 bit constant = load + constant = 6 bytes).
     However, if the constant load (LS insn) can be hoisted insn dependencies
     can be avoided and chances for parallel execution increase.  The common
     usage pattern is:
       - load reg from mem
       - test bits
       - conditional branch

     FIXME: For now we do that only when optimizing for size until there is
     a better heuristic.

     FIXME: If there are multiple tst insns in the block with the same
     constant, avoid the #imm variant to avoid R0 loads.  Use the 'tst Rn,Rm'
     variant instead and load the constant into a reg.  For that we'd need
     to do some analysis.  */

  if (CONST_OK_FOR_K08 (op1val))
    {
      /* Do nothing.  */
    }
  else if ((op1val & 0xFFFF) == 0
           && CONST_OK_FOR_K08 (op1val >> 16) && optimize_size)
    {
      /* Use a swap.w insn to do a shift + reg copy (to R0) in one insn.  */
      op1val = op1val >> 16;
      rtx r = gen_reg_rtx (SImode);
      emit_insn (gen_rotlsi3_16 (r, operands[0]));
      operands[0] = r;
    }
  else if ((op1val & 0xFF) == 0
           && CONST_OK_FOR_K08 (op1val >> 8) && optimize_size)
    {
      /* Use a swap.b insn to do a shift + reg copy (to R0) in one insn.  */
      op1val = op1val >> 8;
      rtx r = gen_reg_rtx (SImode);
      emit_insn (gen_swapbsi2 (r, operands[0]));
      operands[0] = r;
    }
  else if ((op1val & 3) == 0
           && CONST_OK_FOR_K08 (op1val >> 2) && optimize_size)
    {
      op1val = op1val >> 2;
      rtx r = gen_reg_rtx (SImode);
      emit_insn (gen_lshrsi3_k (r, operands[0], GEN_INT (2)));
      operands[0] = r;
    }
  else if ((op1val & 1) == 0
           && CONST_OK_FOR_K08 (op1val >> 1) && optimize_size)
    {
      op1val = op1val >> 1;
      rtx r = gen_reg_rtx (SImode);
      emit_insn (gen_shlr (r, operands[0]));
      operands[0] = r;
    }

  operands[1] = GEN_INT (op1val);

  if (!satisfies_constraint_K08 (operands[1]))
    operands[1] = force_reg (SImode, operands[1]);

  emit_insn (gen_tstsi_t (operands[0], operands[1]));
  DONE;
}
  [(set_attr "type" "mt_group")])

;; This pattern is used by combine when testing QI/HImode subregs with a
;; negative constant.  Ignore high bits by masking them out in the constant.
(define_insn_and_split "*tst<mode>_t"
  [(set (reg:SI T_REG)
        (eq:SI (subreg:SI
                 (and:QIHI (match_operand:QIHI 0 "arith_reg_operand")
                           (match_operand 1 "const_int_operand")) 0)
               (const_int 0)))]
  "TARGET_SH1 && can_create_pseudo_p ()"
  "#"
  "&& 1"
  [(set (reg:SI T_REG)
        (eq:SI (and:SI (match_dup 0) (match_dup 1)) (const_int 0)))]
{
  operands[0] = simplify_gen_subreg (SImode, operands[0], <MODE>mode, 0);
  operands[1] = GEN_INT (INTVAL (operands[1])
                         & (<MODE>mode == HImode ? 0xFFFF : 0xFF));
})

;; This pattern might be risky because it also tests the upper bits and not
;; only the subreg.  We have to check whether the operands have been sign
;; or zero extended.  In the worst case, a zero extension has to be inserted
;; to mask out the unwanted bits.
(define_insn_and_split "*tst<mode>_t_subregs"
  [(set (reg:SI T_REG)
        (eq:SI
          (subreg:QIHI
            (and:SI (match_operand:SI 0 "arith_reg_operand")
                    (match_operand:SI 1 "arith_reg_operand")) <lowpart_le>)
          (const_int 0)))]
  "TARGET_SH1 && TARGET_LITTLE_ENDIAN && can_create_pseudo_p ()"
  "#"
  "&& !sh_in_recog_treg_set_expr ()"
  [(const_int 0)]
{
  sh_split_tst_subregs (curr_insn, <MODE>mode, <lowpart_le>, operands);
  DONE;
})

(define_insn_and_split "*tst<mode>_t_subregs"
  [(set (reg:SI T_REG)
        (eq:SI
          (subreg:QIHI
            (and:SI (match_operand:SI 0 "arith_reg_operand")
                    (match_operand:SI 1 "arith_reg_operand")) <lowpart_be>)
          (const_int 0)))]
  "TARGET_SH1 && TARGET_BIG_ENDIAN && can_create_pseudo_p ()"
  "#"
  "&& !sh_in_recog_treg_set_expr ()"
  [(const_int 0)]
{
  sh_split_tst_subregs (curr_insn, <MODE>mode, <lowpart_be>, operands);
  DONE;
})

;; Extract contiguous bits and compare them against zero.
;; Notice that this will not be used for single bits.  Special single bit
;; extraction patterns are in the 'bit field extract patterns' section.
(define_insn_and_split "*tst<mode>_t_zero_extract"
  [(set (reg:SI T_REG)
        (eq:SI (zero_extract:SI (match_operand:QIHISI 0 "arith_reg_operand")
                                (match_operand 1 "const_int_operand")
                                (match_operand 2 "const_int_operand"))
               (const_int 0)))]
  "TARGET_SH1 && can_create_pseudo_p ()"
  "#"
  "&& 1"
  [(set (reg:SI T_REG)
        (eq:SI (and:SI (match_dup 0) (match_dup 1)) (const_int 0)))]
{
  operands[1] = GEN_INT (ZERO_EXTRACT_ANDMASK (operands[1], operands[2]));
  if (GET_MODE (operands[0]) != SImode)
    operands[0] = simplify_gen_subreg (SImode, operands[0], <MODE>mode, 0);
})

;; Convert '(reg << shift) & mask' into 'reg & (mask >> shift)'.
;; The shifted-out bits in the mask will always be zero, since the
;; shifted-in bits in the reg will also be always zero.
(define_insn_and_split "*tstsi_t_shift_mask"
  [(set (reg:SI T_REG)
        (eq:SI (and:SI (ashift:SI (match_operand:SI 0 "arith_reg_operand")
                                  (match_operand 1 "const_int_operand"))
                       (match_operand 2 "const_int_operand"))
               (const_int 0)))]
  "TARGET_SH1 && can_create_pseudo_p ()"
  "#"
  "&& 1"
  [(set (reg:SI T_REG)
        (eq:SI (and:SI (match_dup 0) (match_dup 2)) (const_int 0)))]
{
  operands[2] = GEN_INT (INTVAL (operands[2]) >> INTVAL (operands[1]));
})

(define_insn "cmpeqsi_t"
  [(set (reg:SI T_REG)
        (eq:SI (match_operand:SI 0 "arith_reg_operand" "r,z,r")
               (match_operand:SI 1 "arith_operand" "N,rI08,r")))]
  "TARGET_SH1"
  "@
        tst     %0,%0
        cmp/eq  %1,%0
        cmp/eq  %1,%0"
  [(set_attr "type" "mt_group")])

;; Sometimes combine fails to form the (eq (and (op) (op)) 0) tst insn.
;; Try to fix that in the split1 pass by looking for the previous set
;; of the tested op.  Also see if there is a preceeding sign/zero
;; extension that can be avoided.
(define_split
  [(set (reg:SI T_REG)
        (eq:SI (match_operand:SI 0 "arith_reg_operand") (const_int 0)))]
  "TARGET_SH1 && can_create_pseudo_p () && optimize
   && !sh_in_recog_treg_set_expr ()"
  [(set (reg:SI T_REG) (eq:SI (match_dup 0) (const_int 0)))]
{
  if (dump_file)
    fprintf (dump_file, "cmpeqsi_t: trying to optimize const_int 0\n");

  /* If the tested reg is not dead after this insn, it's probably used by
     something else after the comparison.  It's probably better to leave
     it as it is.  */
  rtx reg = operands[0];
  if (SUBREG_P (reg))
    reg = SUBREG_REG (reg);
  gcc_assert (REG_P (reg));
  if (find_regno_note (curr_insn, REG_DEAD, REGNO (reg)) != NULL_RTX)
    FAIL;

  /* FIXME: Maybe also search the predecessor basic blocks to catch
     more cases.  */
  set_of_reg op = sh_find_set_of_reg (operands[0], curr_insn,
                                      prev_nonnote_insn_bb);

  if (op.set_src != NULL && GET_CODE (op.set_src) == AND
      && !sh_insn_operands_modified_between_p (op.insn, op.insn, curr_insn))
    {
      if (dump_file)
        fprintf (dump_file, "cmpeqsi_t: found preceeding and in insn %d\n",
                 INSN_UID (op.insn));

      if (!(arith_reg_operand (XEXP (op.set_src, 0), SImode)
            && (arith_reg_operand (XEXP (op.set_src, 1), SImode)
                || CONST_INT_P (XEXP (op.set_src, 1)))))
        FAIL;

      /* Assume that the operands of the andsi insn are compatible with the
         operands of the tstsi_t insn, which is generally the case.  */
      if (dump_file)
        fprintf (dump_file, "cmpeqsi_t: replacing with tstsi_t\n");
      emit_insn (gen_tstsi_t (copy_rtx (XEXP (op.set_src, 0)),
                              copy_rtx (XEXP (op.set_src, 1))));
      DONE;
    }

  /* Converting HImode into tests against 0xFFFF tends to increase the code
     size, as it will create constant pool entries.  Disable it for now.  */
  const bool enable_himode = false;

  /* FIXME: try to keep the (eq (reg) (const_int 0)).  Even if the zero
     extended reg is used after this insn, if we know that _before_ the zero
     extension the value was loaded via sign extending mem load, we can just
     use the value of the mem load directly.  */
  sh_extending_set_of_reg eop = sh_find_extending_set_of_reg (operands[0],
                                                              curr_insn);

  if (eop.ext_code != UNKNOWN
      && (eop.from_mode == QImode || (eop.from_mode == HImode && enable_himode))
      && eop.can_use_as_unextended_reg ()
      && !reg_used_between_p (operands[0], eop.insn, curr_insn))
    {
      /* Bypass the sign/zero extension and test against the bit mask, but
         only if it's the only use of the sign/zero extracted value.
         Otherwise we'd be introducing new constants in the pool.  */
      if (dump_file)
        fprintf (dump_file, "cmpeqsi_t: bypassing sign/zero extension in "
                 "insn %d and using tstsi_t\n", INSN_UID (op.insn));

      emit_insn (gen_tstsi_t (
          eop.use_as_unextended_reg (curr_insn),
          GEN_INT (eop.from_mode == QImode ? 0xFF : 0xFFFF)));
      DONE;
    }

  if (dump_file)
    fprintf (dump_file, "cmpeqsi_t: nothing optimized\n");
  FAIL;
})

(define_insn "cmpgtsi_t"
  [(set (reg:SI T_REG)
        (gt:SI (match_operand:SI 0 "arith_reg_operand" "r,r")
               (match_operand:SI 1 "arith_reg_or_0_operand" "N,r")))]
  "TARGET_SH1"
  "@
        cmp/pl  %0
        cmp/gt  %1,%0"
  [(set_attr "type" "mt_group")])

(define_insn "cmpgesi_t"
  [(set (reg:SI T_REG)
        (ge:SI (match_operand:SI 0 "arith_reg_operand" "r,r")
               (match_operand:SI 1 "arith_reg_or_0_operand" "N,r")))]
  "TARGET_SH1"
  "@
        cmp/pz  %0
        cmp/ge  %1,%0"
  [(set_attr "type" "mt_group")])

;; Recombine a cmp/pz followed by a nott into a shll.
;; On non-SH2A recombine a cmp/pz followed by a movrt into shll-movt.
;; On SH2A cmp/pz-movrt is slightly better, as it does not mutate the input.
(define_split
  [(set (reg:SI T_REG)
        (ge:SI (match_operand:SI 0 "arith_reg_operand") (const_int 0)))]

  "TARGET_SH1 && can_create_pseudo_p () && optimize
   && !sh_in_recog_treg_set_expr ()"
  [(const_int 0)]
{
  if (dump_file)
    fprintf (dump_file, "cmpgesi_t: trying to optimize for const_int 0\n");

  rtx_insn* i = next_nonnote_insn_bb (curr_insn);

  if (dump_file)
    {
      fprintf (dump_file, "cmpgesi_t: following insn is \n");
      print_rtl_single (dump_file, i);
      fprintf (dump_file, "\n");
    }

  if (sh_is_nott_insn (i))
    {
      if (dump_file)
        fprintf (dump_file,
                 "cmpgesi_t: replacing (cmp/pz, nott) with (shll)\n");
      emit_insn (gen_shll (gen_reg_rtx (SImode), operands[0]));
      set_insn_deleted (i);
      DONE;
    }

  /* On non-SH2A negc is used as movrt replacement, which sets T = 1.
     Thus we can remove it only if T is marked as dead afterwards.  */
  if (rtx dest_reg = !TARGET_SH2A
                     && sh_reg_dead_or_unused_after_insn (i, T_REG)
                     ? sh_movrt_set_dest (i) : NULL)
    {
      if (dump_file)
        fprintf (dump_file,
                 "cmpgesi_t: replacing (cmp/pz, movrt) with (shll, movt)\n");
      emit_insn (gen_shll (gen_reg_rtx (SImode), operands[0]));
      add_reg_note (emit_insn (gen_movt (dest_reg, get_t_reg_rtx ())),
                    REG_DEAD, get_t_reg_rtx ());
      set_insn_deleted (i);
      DONE;
    }

  if (dump_file)
    fprintf (dump_file, "cmpgesi_t: nothing optimized\n");

  FAIL;
})

;; FIXME: This is actually wrong.  There is no way to literally move a
;; general reg to t reg.  Luckily, it seems that this pattern will be only
;; used when the general reg is known be either '0' or '1' during combine.
;; What we actually need is reg != 0 -> T, but we have only reg == 0 -> T.
;; Due to interactions with other patterns, combine fails to pick the latter
;; and invert the dependent logic.
(define_insn "*negtstsi"
  [(set (reg:SI T_REG) (match_operand:SI 0 "arith_reg_operand" "r"))]
  "TARGET_SH1 && !sh_in_recog_treg_set_expr ()"
  "cmp/pl       %0"
  [(set_attr "type" "mt_group")])

;; Some integer sign comparison patterns can be realized with the div0s insn.
;;      div0s   Rm,Rn           T = (Rm >> 31) ^ (Rn >> 31)
;;
;; The 'cmp_div0s' pattern is our canonical form, into which all the other
;; variations are converted.  The negative forms will split into a trailing
;; nott sequence, which will be eliminated either by the
;; 'any_treg_expr_to_reg' pattern, or by the 'sh_treg_combine' pass.
(define_insn "cmp_div0s"
  [(set (reg:SI T_REG)
        (lshiftrt:SI (xor:SI (match_operand:SI 0 "arith_reg_operand" "%r")
                             (match_operand:SI 1 "arith_reg_operand" "r"))
                     (const_int 31)))]
  "TARGET_SH1"
  "div0s        %0,%1"
  [(set_attr "type" "arith")])

(define_insn_and_split "*cmp_div0s_1"
  [(set (reg:SI T_REG)
        (xor:SI (ge:SI (match_operand:SI 0 "arith_reg_operand")
                       (const_int 0))
                (ge:SI (match_operand:SI 1 "arith_reg_operand")
                       (const_int 0))))]
  "TARGET_SH1 && can_create_pseudo_p ()"
  "#"
  "&& 1"
  [(set (reg:SI T_REG)
        (lshiftrt:SI (xor:SI (match_dup 0) (match_dup 1)) (const_int 31)))])

(define_insn_and_split "*cmp_div0s_2"
  [(set (reg:SI T_REG)
        (eq:SI (lshiftrt:SI (match_operand:SI 0 "arith_reg_operand")
                            (const_int 31))
               (ge:SI (match_operand:SI 1 "arith_reg_operand")
                      (const_int 0))))]
  "TARGET_SH1 && can_create_pseudo_p ()"
  "#"
  "&& 1"
  [(set (reg:SI T_REG)
        (lshiftrt:SI (xor:SI (match_dup 0) (match_dup 1)) (const_int 31)))])

(define_insn_and_split "*cmp_div0s_3"
  [(set (reg:SI T_REG)
        (eq:SI (ge:SI (match_operand:SI 0 "arith_reg_operand")
                      (const_int 0))
               (ge:SI (match_operand:SI 1 "arith_reg_operand")
                      (const_int 0))))]
  "TARGET_SH1 && can_create_pseudo_p ()"
  "#"
  "&& 1"
  [(set (reg:SI T_REG)
        (lshiftrt:SI (xor:SI (match_dup 0) (match_dup 1)) (const_int 31)))
   (set (reg:SI T_REG) (xor:SI (reg:SI T_REG) (const_int 1)))])

(define_insn_and_split "*cmp_div0s_4"
  [(set (reg:SI T_REG)
        (ge:SI (xor:SI (match_operand:SI 0 "arith_reg_operand")
                       (match_operand:SI 1 "arith_reg_operand"))
               (const_int 0)))]
  "TARGET_SH1 && can_create_pseudo_p ()"
  "#"
  "&& 1"
  [(set (reg:SI T_REG)
        (lshiftrt:SI (xor:SI (match_dup 0) (match_dup 1)) (const_int 31)))
   (set (reg:SI T_REG) (xor:SI (reg:SI T_REG) (const_int 1)))])

(define_insn_and_split "*cmp_div0s_5"
  [(set (reg:SI T_REG)
        (xor:SI (lshiftrt:SI (match_operand:SI 0 "arith_reg_operand")
                             (const_int 31))
                (ge:SI (match_operand:SI 1 "arith_reg_operand")
                       (const_int 0))))]
  "TARGET_SH1 && can_create_pseudo_p ()"
  "#"
  "&& 1"
  [(set (reg:SI T_REG)
        (lshiftrt:SI (xor:SI (match_dup 0) (match_dup 1)) (const_int 31)))
   (set (reg:SI T_REG) (xor:SI (reg:SI T_REG) (const_int 1)))])

(define_insn_and_split "*cmp_div0s_6"
  [(set (reg:SI T_REG)
        (eq:SI (lshiftrt:SI (match_operand:SI 0 "arith_reg_operand")
                            (const_int 31))
               (lshiftrt:SI (match_operand:SI 1 "arith_reg_operand")
                            (const_int 31))))]
  "TARGET_SH1 && can_create_pseudo_p ()"
  "#"
  "&& 1"
  [(set (reg:SI T_REG)
        (lshiftrt:SI (xor:SI (match_dup 0) (match_dup 1)) (const_int 31)))
   (set (reg:SI T_REG) (xor:SI (reg:SI T_REG) (const_int 1)))])

;; In some cases, it might be shorter to get a tested bit into bit 31 and
;; use div0s.  Otherwise it's usually better to just leave the xor and tst
;; sequence.  The only thing we can try to do here is avoiding the large
;; tst constant.
(define_insn_and_split "*cmp_div0s_7"
  [(set (reg:SI T_REG)
        (zero_extract:SI (xor:SI (match_operand:SI 0 "arith_reg_operand")
                                 (match_operand:SI 1 "arith_reg_operand"))
                         (const_int 1)
                         (match_operand 2 "const_int_operand")))]
  "TARGET_SH1 && can_create_pseudo_p ()
   && (INTVAL (operands[2]) == 7 || INTVAL (operands[2]) == 15
       || INTVAL (operands[2]) == 23 || INTVAL (operands[2]) == 29
       || INTVAL (operands[2]) == 30 || INTVAL (operands[2]) == 31)"
  "#"
  "&& 1"
  [(const_int 0)]
{
  const int bitpos = INTVAL (operands[2]);

  rtx op0 = gen_reg_rtx (SImode);
  rtx op1 = gen_reg_rtx (SImode);

  if (bitpos == 23 || bitpos == 30 || bitpos == 29)
    {
      emit_insn (gen_ashlsi3 (op0, operands[0], GEN_INT (31 - bitpos)));
      emit_insn (gen_ashlsi3 (op1, operands[1], GEN_INT (31 - bitpos)));
    }
  else if (bitpos == 15)
    {
      emit_insn (gen_extendhisi2 (op0, gen_lowpart (HImode, operands[0])));
      emit_insn (gen_extendhisi2 (op1, gen_lowpart (HImode, operands[1])));
    }
  else if (bitpos == 7)
    {
      emit_insn (gen_extendqisi2 (op0, gen_lowpart (QImode, operands[0])));
      emit_insn (gen_extendqisi2 (op1, gen_lowpart (QImode, operands[1])));
    }
  else if (bitpos == 31)
    {
      op0 = operands[0];
      op1 = operands[1];
    }
  else
    gcc_unreachable ();

  emit_insn (gen_cmp_div0s (op0, op1));
  DONE;
})

;; For bits 0..7 using a xor and tst #imm,r0 sequence seems to be better.
;; Thus allow the following patterns only for higher bit positions where
;; we it's more likely to save the large tst constant.
(define_insn_and_split "*cmp_div0s_8"
  [(set (reg:SI T_REG)
        (eq:SI (zero_extract:SI (match_operand:SI 0 "arith_reg_operand")
                                (const_int 1)
                                (match_operand 2 "const_int_operand"))
               (zero_extract:SI (match_operand:SI 1 "arith_reg_operand")
                                (const_int 1)
                                (match_dup 2))))]
  "TARGET_SH1 && can_create_pseudo_p ()
   && (INTVAL (operands[2]) == 15
       || INTVAL (operands[2]) == 23 || INTVAL (operands[2]) == 29
       || INTVAL (operands[2]) == 30 || INTVAL (operands[2]) == 31)"
  "#"
  "&& 1"
  [(set (reg:SI T_REG)
        (zero_extract:SI (xor:SI (match_dup 0) (match_dup 1))
                         (const_int 1) (match_dup 2)))
   (set (reg:SI T_REG) (xor:SI (reg:SI T_REG) (const_int 1)))])

(define_insn_and_split "*cmp_div0s_9"
  [(set (reg:SI T_REG)
        (zero_extract:SI (xor:SI (xor:SI (match_operand:SI 0 "arith_reg_operand")
                                         (match_operand:SI 1 "arith_reg_operand"))
                                 (match_operand 2 "const_int_operand"))
                         (const_int 1)
                         (match_operand 3 "const_int_operand")))]
  "TARGET_SH1 && can_create_pseudo_p ()
   && (INTVAL (operands[2]) & 0xFFFFFFFF) == (1U << INTVAL (operands[3]))
   && (INTVAL (operands[3]) == 15
       || INTVAL (operands[3]) == 23 || INTVAL (operands[3]) == 29
       || INTVAL (operands[3]) == 30 || INTVAL (operands[3]) == 31)"
  "#"
  "&& 1"
  [(set (reg:SI T_REG)
        (zero_extract:SI (xor:SI (match_dup 0) (match_dup 1))
                         (const_int 1) (match_dup 3)))
   (set (reg:SI T_REG) (xor:SI (reg:SI T_REG) (const_int 1)))])

;; -------------------------------------------------------------------------
;; SImode compare and branch
;; -------------------------------------------------------------------------

(define_expand "cbranchsi4"
  [(set (pc)
        (if_then_else (match_operator 0 "comparison_operator"
                        [(match_operand:SI 1 "arith_operand" "")
                         (match_operand:SI 2 "arith_operand" "")])
                      (label_ref (match_operand 3 "" ""))
                      (pc)))
   (clobber (reg:SI T_REG))]
  "can_create_pseudo_p ()"
{
  expand_cbranchsi4 (operands, LAST_AND_UNUSED_RTX_CODE, -1);
  DONE;
})

;; Combine patterns to invert compare and branch operations for which we
;; don't have actual comparison insns.  These patterns are used in cases
;; which appear after the initial cbranchsi expansion, which also does
;; some condition inversion.
(define_split
  [(set (pc)
        (if_then_else (ne (match_operand:SI 0 "arith_reg_operand" "")
                          (match_operand:SI 1 "arith_reg_or_0_operand" ""))
                      (label_ref (match_operand 2))
                      (pc)))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1"
  [(set (reg:SI T_REG) (eq:SI (match_dup 0) (match_dup 1)))
   (set (pc) (if_then_else (eq (reg:SI T_REG) (const_int 0))
                           (label_ref (match_dup 2))
                           (pc)))])

;; FIXME: These don't seem to have any effect on the generated cbranch code
;;        anymore, but only on some register allocation choices.
(define_split
  [(set (pc)
        (if_then_else (le (match_operand:SI 0 "arith_reg_operand" "")
                          (match_operand:SI 1 "arith_reg_or_0_operand" ""))
                      (label_ref (match_operand 2))
                      (pc)))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1"
  [(set (reg:SI T_REG) (gt:SI (match_dup 0) (match_dup 1)))
   (set (pc) (if_then_else (eq (reg:SI T_REG) (const_int 0))
                           (label_ref (match_dup 2))
                           (pc)))])

(define_split
  [(set (pc)
        (if_then_else (lt (match_operand:SI 0 "arith_reg_operand" "")
                          (match_operand:SI 1 "arith_reg_or_0_operand" ""))
                      (label_ref (match_operand 2))
                      (pc)))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1"
  [(set (reg:SI T_REG) (ge:SI (match_dup 0) (match_dup 1)))
   (set (pc) (if_then_else (eq (reg:SI T_REG) (const_int 0))
                           (label_ref (match_dup 2))
                           (pc)))])

(define_split
  [(set (pc)
        (if_then_else (leu (match_operand:SI 0 "arith_reg_operand" "")
                           (match_operand:SI 1 "arith_reg_operand" ""))
                      (label_ref (match_operand 2))
                      (pc)))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1"
  [(set (reg:SI T_REG) (gtu:SI (match_dup 0) (match_dup 1)))
   (set (pc) (if_then_else (eq (reg:SI T_REG) (const_int 0))
                           (label_ref (match_dup 2))
                           (pc)))])

(define_split
  [(set (pc)
        (if_then_else (ltu (match_operand:SI 0 "arith_reg_operand" "")
                           (match_operand:SI 1 "arith_reg_operand" ""))
                      (label_ref (match_operand 2))
                      (pc)))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1"
  [(set (reg:SI T_REG) (geu:SI (match_dup 0) (match_dup 1)))
   (set (pc) (if_then_else (eq (reg:SI T_REG) (const_int 0))
                           (label_ref (match_dup 2))
                           (pc)))])

;; -------------------------------------------------------------------------
;; SImode unsigned integer comparisons
;; -------------------------------------------------------------------------

;; Usually comparisons of 'unsigned int >= 0' are optimized away completely.
;; However, especially when optimizations are off (e.g. -O0) such comparisons
;; might remain and we have to handle them.  If the '>= 0' case wasn't
;; handled here, something else would just load a '0' into the second operand
;; and do the comparison.  We can do slightly better by just setting the
;; T bit to '1'.
(define_insn_and_split "cmpgeusi_t"
  [(set (reg:SI T_REG)
        (geu:SI (match_operand:SI 0 "arith_reg_operand" "r")
                (match_operand:SI 1 "arith_reg_or_0_operand" "r")))]
  "TARGET_SH1"
  "cmp/hs       %1,%0"
  "&& satisfies_constraint_Z (operands[1])"
  [(set (reg:SI T_REG) (const_int 1))]
  ""
  [(set_attr "type" "mt_group")])

(define_insn "cmpgtusi_t"
  [(set (reg:SI T_REG)
        (gtu:SI (match_operand:SI 0 "arith_reg_operand" "r")
                (match_operand:SI 1 "arith_reg_operand" "r")))]
  "TARGET_SH1"
  "cmp/hi       %1,%0"
  [(set_attr "type" "mt_group")])
\f
;; -------------------------------------------------------------------------
;; DImode compare and branch
;; -------------------------------------------------------------------------

;; arith3 patterns don't work well with the sh4-300 branch prediction mechanism.
;; Therefore, we aim to have a set of three branches that go straight to the
;; destination, i.e. only one of them is taken at any one time.
;; This mechanism should also be slightly better for the sh4-200.

(define_expand "cbranchdi4"
  [(set (pc)
        (if_then_else (match_operator 0 "comparison_operator"
                        [(match_operand:DI 1 "arith_operand")
                         (match_operand:DI 2 "arith_operand")])
                      (label_ref (match_operand 3))
                      (pc)))
   (clobber (reg:SI T_REG))]
  "TARGET_SH2 && can_create_pseudo_p ()"
{
  if (!expand_cbranchdi4 (operands, GET_CODE (operands[0])))
    FAIL;
  DONE;
})

;; -------------------------------------------------------------------------
;; DImode signed integer comparisons
;; -------------------------------------------------------------------------

(define_insn ""
  [(set (reg:SI T_REG)
        (eq:SI (and:DI (match_operand:DI 0 "arith_reg_operand" "r")
                       (match_operand:DI 1 "arith_operand" "r"))
               (const_int 0)))]
  "TARGET_SH1"
{
  return output_branchy_insn (EQ, "tst\t%S1,%S0;bf\t%l9;tst\t%R1,%R0",
                              insn, operands);
}
  [(set_attr "length" "6")
   (set_attr "type" "arith3b")])

(define_insn "cmpeqdi_t"
  [(set (reg:SI T_REG)
        (eq:SI (match_operand:DI 0 "arith_reg_operand" "r,r")
               (match_operand:DI 1 "arith_reg_or_0_operand" "N,r")))]
  "TARGET_SH1"
{
  static const char* alt[] =
  {
       "tst     %S0,%S0"        "\n"
    "   bf      0f"             "\n"
    "   tst     %R0,%R0"        "\n"
    "0:",

       "cmp/eq  %S1,%S0"        "\n"
    "   bf      0f"             "\n"
    "   cmp/eq  %R1,%R0"        "\n"
    "0:"
  };
  return alt[which_alternative];
}
  [(set_attr "length" "6")
   (set_attr "type" "arith3b")])

(define_split
  [(set (reg:SI T_REG)
        (eq:SI (match_operand:DI 0 "arith_reg_operand" "")
               (match_operand:DI 1 "arith_reg_or_0_operand" "")))]
;; If we applied this split when not optimizing, it would only be
;; applied during the machine-dependent reorg, when no new basic blocks
;; may be created.
  "TARGET_SH1 && reload_completed && optimize"
  [(set (reg:SI T_REG) (eq:SI (match_dup 2) (match_dup 3)))
   (set (pc) (if_then_else (eq (reg:SI T_REG) (const_int 0))
                           (label_ref (match_dup 6))
                           (pc)))
   (set (reg:SI T_REG) (eq:SI (match_dup 4) (match_dup 5)))
   (match_dup 6)]
{
  operands[2] = gen_highpart (SImode, operands[0]);
  operands[3] = operands[1] == const0_rtx
                ? const0_rtx
                : gen_highpart (SImode, operands[1]);
  operands[4] = gen_lowpart (SImode, operands[0]);
  operands[5] = gen_lowpart (SImode, operands[1]);
  operands[6] = gen_label_rtx ();
})

(define_insn "cmpgtdi_t"
  [(set (reg:SI T_REG)
        (gt:SI (match_operand:DI 0 "arith_reg_operand" "r,r")
               (match_operand:DI 1 "arith_reg_or_0_operand" "r,N")))]
  "TARGET_SH2"
{
  static const char* alt[] =
  {
       "cmp/eq  %S1,%S0"        "\n"
    "   bf{.|/}s        0f"     "\n"
    "   cmp/gt  %S1,%S0"        "\n"
    "   cmp/hi  %R1,%R0"        "\n"
    "0:",

        "tst    %S0,%S0"        "\n"
    "   bf{.|/}s        0f"     "\n"
    "   cmp/pl  %S0"            "\n"
    "   cmp/hi  %S0,%R0"        "\n"
    "0:"
  };
  return alt[which_alternative];
}
  [(set_attr "length" "8")
   (set_attr "type" "arith3")])

(define_insn "cmpgedi_t"
  [(set (reg:SI T_REG)
        (ge:SI (match_operand:DI 0 "arith_reg_operand" "r,r")
               (match_operand:DI 1 "arith_reg_or_0_operand" "r,N")))]
  "TARGET_SH2"
{
  static const char* alt[] =
  {
       "cmp/eq  %S1,%S0"        "\n"
    "   bf{.|/}s        0f"     "\n"
    "   cmp/ge  %S1,%S0"        "\n"
    "   cmp/hs  %R1,%R0"        "\n"
    "0:",

       "cmp/pz  %S0"
  };
  return alt[which_alternative];
}
  [(set_attr "length" "8,2")
   (set_attr "type" "arith3,mt_group")])
\f
;; -------------------------------------------------------------------------
;; DImode unsigned integer comparisons
;; -------------------------------------------------------------------------

(define_insn "cmpgeudi_t"
  [(set (reg:SI T_REG)
        (geu:SI (match_operand:DI 0 "arith_reg_operand" "r")
                (match_operand:DI 1 "arith_reg_operand" "r")))]
  "TARGET_SH2"
{
  return       "cmp/eq  %S1,%S0"        "\n"
         "      bf{.|/}s        0f"     "\n"
         "      cmp/hs  %S1,%S0"        "\n"
         "      cmp/hs  %R1,%R0"        "\n"
         "0:";
}
  [(set_attr "length" "8")
   (set_attr "type" "arith3")])

(define_insn "cmpgtudi_t"
  [(set (reg:SI T_REG)
        (gtu:SI (match_operand:DI 0 "arith_reg_operand" "r")
                (match_operand:DI 1 "arith_reg_operand" "r")))]
  "TARGET_SH2"
{
  return       "cmp/eq  %S1,%S0"        "\n"
         "      bf{.|/}s        0f"     "\n"
         "      cmp/hi  %S1,%S0"        "\n"
         "      cmp/hi  %R1,%R0"        "\n"
         "0:";
}
  [(set_attr "length" "8")
   (set_attr "type" "arith3")])

;; -------------------------------------------------------------------------
;; Conditional move instructions
;; -------------------------------------------------------------------------

(define_insn "*movsicc_t_false"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r,r")
        (if_then_else (eq (reg:SI T_REG) (const_int 0))
                      (match_operand:SI 1 "general_movsrc_operand" "r,I08")
                      (match_operand:SI 2 "arith_reg_operand" "0,0")))]
  "TARGET_PRETEND_CMOVE
   && (arith_reg_operand (operands[1], SImode)
       || (immediate_operand (operands[1], SImode)
           && satisfies_constraint_I08 (operands[1])))"
{
  return       "bt      0f"     "\n"
         "      mov     %1,%0"  "\n"
         "0:";
}
  [(set_attr "type" "mt_group,arith") ;; poor approximation
   (set_attr "length" "4")])

(define_insn "*movsicc_t_true"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r,r")
        (if_then_else (ne (reg:SI T_REG) (const_int 0))
                      (match_operand:SI 1 "general_movsrc_operand" "r,I08")
                      (match_operand:SI 2 "arith_reg_operand" "0,0")))]
  "TARGET_PRETEND_CMOVE
   && (arith_reg_operand (operands[1], SImode)
       || (immediate_operand (operands[1], SImode)
           && satisfies_constraint_I08 (operands[1])))"
{
  return       "bf      0f"     "\n"
         "      mov     %1,%0"  "\n"
         "0:";
}
  [(set_attr "type" "mt_group,arith") ;; poor approximation
   (set_attr "length" "4")])

(define_expand "movsicc"
  [(set (match_operand:SI 0 "arith_reg_dest" "")
        (if_then_else:SI (match_operand 1 "comparison_operator" "")
                         (match_operand:SI 2 "arith_reg_or_0_operand" "")
                         (match_operand:SI 3 "arith_reg_operand" "")))]
  "TARGET_PRETEND_CMOVE"
{
  rtx_code code = GET_CODE (operands[1]);
  rtx_code new_code = code;
  rtx op0 = XEXP (operands[1], 0);
  rtx op1 = XEXP (operands[1], 1);

  if (! currently_expanding_to_rtl)
    FAIL;

  switch (code)
    {
      case LT: case LE: case LEU: case LTU:
        if (GET_MODE_CLASS (GET_MODE (op0)) != MODE_INT)
          break;
        /* FALLTHRU */
      case NE:
        new_code = reverse_condition (code);
        break;
      case EQ: case GT: case GE: case GEU: case GTU:
        break;
      default:
        FAIL;
    }

  sh_emit_scc_to_t (new_code, op0, op1);
  operands[1] = gen_rtx_fmt_ee (new_code == code ? NE : EQ, VOIDmode,
                                gen_rtx_REG (SImode, T_REG), const0_rtx);
})

;; -------------------------------------------------------------------------
;; Addition instructions
;; -------------------------------------------------------------------------

(define_insn_and_split "adddi3"
  [(set (match_operand:DI 0 "arith_reg_dest")
        (plus:DI (match_operand:DI 1 "arith_reg_operand")
                 (match_operand:DI 2 "arith_reg_operand")))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1"
  "#"
  "&& can_create_pseudo_p ()"
  [(const_int 0)]
{
  emit_insn (gen_clrt ());
  emit_insn (gen_addc (gen_lowpart (SImode, operands[0]),
                       gen_lowpart (SImode, operands[1]),
                       gen_lowpart (SImode, operands[2])));
  emit_insn (gen_addc (gen_highpart (SImode, operands[0]),
                       gen_highpart (SImode, operands[1]),
                       gen_highpart (SImode, operands[2])));
  DONE;
})

(define_insn "addc"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r")
        (plus:SI (plus:SI (match_operand:SI 1 "arith_reg_operand" "%0")
                          (match_operand:SI 2 "arith_reg_operand" "r"))
                 (reg:SI T_REG)))
   (set (reg:SI T_REG)
        (ltu:SI (plus:SI (match_dup 1) (match_dup 2)) (match_dup 1)))]
  "TARGET_SH1"
  "addc %2,%0"
  [(set_attr "type" "arith")])

;; A simplified version of the addc insn, where the exact value of the
;; T bit doesn't matter.  This is easier for combine to pick up.
;; We allow a reg or 0 for one of the operands in order to be able to
;; do 'reg + T' sequences.
(define_insn_and_split "*addc"
  [(set (match_operand:SI 0 "arith_reg_dest")
        (plus:SI (plus:SI (match_operand:SI 1 "arith_reg_operand")
                          (match_operand:SI 2 "arith_reg_or_0_operand"))
                 (match_operand 3 "treg_set_expr")))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1 && can_create_pseudo_p ()"
  "#"
  "&& 1"
  [(const_int 0)]
{
  sh_treg_insns ti = sh_split_treg_set_expr (operands[3], curr_insn);
  if (ti.has_trailing_nott ())
    {
      if (operands[2] == const0_rtx)
        {
          /* op1 + 0 + (1 - T) = op1 + 1 - T = op1 - (-1) - T  */
          remove_insn (ti.trailing_nott ());
          emit_insn (gen_subc (operands[0], operands[1],
                               force_reg (SImode, GEN_INT (-1))));
          DONE;
        }
      else if (!TARGET_SH2A)
        {
          /* op1 + op2 + (1 - T) = op1 - (0 - op2 - 1) - T = op1 - ~op2 - T
             On SH2A keep the nott insn, because nott-addc sequence doesn't
             mutate the inputs.  */
          remove_insn (ti.trailing_nott ());
          rtx tmp = gen_reg_rtx (SImode);
          emit_insn (gen_one_cmplsi2 (tmp, operands[2]));
          emit_insn (gen_subc (operands[0], operands[1], tmp));
          DONE;
        }
    }

  emit_insn (gen_addc (operands[0], operands[1],
                       force_reg (SImode, operands[2])));
  DONE;
})

(define_insn_and_split "*addc"
  [(set (match_operand:SI 0 "arith_reg_dest")
        (plus:SI (plus:SI (match_operand 1 "treg_set_expr")
                          (match_operand:SI 2 "arith_reg_operand"))
                 (match_operand:SI 3 "arith_reg_operand")))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1 && can_create_pseudo_p ()"
  "#"
  "&& 1"
  [(parallel [(set (match_dup 0) (plus:SI (plus:SI (match_dup 2) (match_dup 3))
                                          (match_dup 1)))
              (clobber (reg:SI T_REG))])])

(define_insn_and_split "*addc"
  [(set (match_operand:SI 0 "arith_reg_dest")
        (plus:SI (match_operand 1 "treg_set_expr")
                 (plus:SI (match_operand:SI 2 "arith_reg_operand")
                          (match_operand:SI 3 "arith_reg_operand"))))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1 && can_create_pseudo_p ()"
  "#"
  "&& 1"
  [(parallel [(set (match_dup 0) (plus:SI (plus:SI (match_dup 2) (match_dup 3))
                                          (match_dup 1)))
              (clobber (reg:SI T_REG))])])

;; Sometimes combine will try to do 'reg + (0-reg) + 1' if the *addc pattern
;; matched.  Split this up into a simple sub add sequence, as this will save
;; us one sett insn.
(define_insn_and_split "*minus_plus_one"
  [(set (match_operand:SI 0 "arith_reg_dest" "")
        (plus:SI (minus:SI (match_operand:SI 1 "arith_reg_operand" "")
                           (match_operand:SI 2 "arith_reg_operand" ""))
                 (const_int 1)))]
  "TARGET_SH1"
  "#"
  "&& 1"
  [(set (match_dup 0) (minus:SI (match_dup 1) (match_dup 2)))
   (set (match_dup 0) (plus:SI (match_dup 0) (const_int 1)))])


;; The tree optimiziers canonicalize 
;;    reg + (reg & 1)
;; into
;;    (reg + 1) & -2
;;
;; On SH2A an add-bclr sequence will be used to handle this.
;; On non-SH2A re-emit the add-and sequence to improve register utilization.
(define_insn_and_split "*round_int_even"
  [(set (match_operand:SI 0 "arith_reg_dest")
        (and:SI (plus:SI (match_operand:SI 1 "arith_reg_operand")
                         (const_int 1))
                (const_int -2)))]
  "TARGET_SH1 && !TARGET_SH2A && can_create_pseudo_p ()
   && !reg_overlap_mentioned_p (operands[0], operands[1])"
  "#"
  "&& 1"
  [(set (match_dup 0) (const_int -2))
   (set (match_dup 2) (plus:SI (match_dup 1) (const_int 1)))
   (set (match_dup 0) (and:SI (match_dup 0) (match_dup 2)))]
{
  operands[2] = gen_reg_rtx (SImode);
})

;; If the *round_int_even pattern is combined with another plus,
;; convert it into an addc pattern to emit an shlr-addc sequence.
;; This split is taken by combine on non-SH2A and SH2A.
(define_split
  [(set (match_operand:SI 0 "arith_reg_dest")
        (plus:SI (and:SI (plus:SI (match_operand:SI 1 "arith_reg_operand")
                                  (const_int 1))
                         (const_int -2))
                 (match_operand:SI 2 "arith_reg_operand")))]
  "TARGET_SH1 && can_create_pseudo_p ()"
  [(parallel [(set (match_dup 0)
                   (plus:SI (plus:SI (match_dup 1) (match_dup 2))
                            (and:SI (match_dup 1) (const_int 1))))
              (clobber (reg:SI T_REG))])])

;; Split 'reg + T' into 'reg + 0 + T' to utilize the addc insn.
;; If the 0 constant can be CSE-ed, this becomes a one instruction
;; operation, as opposed to sequences such as
;;      movt    r2
;;      add     r2,r3
;;
;; Even if the constant is not CSE-ed, a sequence such as
;;      mov     #0,r2
;;      addc    r2,r3
;; can be scheduled much better since the load of the constant can be
;; done earlier, before any comparison insns that store the result in
;; the T bit.
;; However, avoid things like 'reg + 1', which would expand into a
;; 3 insn sequence, instead of add #imm8.
(define_insn_and_split "*addc_t_r"
  [(set (match_operand:SI 0 "arith_reg_dest")
        (plus:SI (match_operand 1 "treg_set_expr_not_const01")
                 (match_operand:SI 2 "arith_reg_operand")))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1 && can_create_pseudo_p ()"
  "#"
  "&& 1"
  [(parallel [(set (match_dup 0) (plus:SI (plus:SI (match_dup 2) (const_int 0))
                                          (match_dup 1)))
              (clobber (reg:SI T_REG))])])

(define_insn_and_split "*addc_r_t"
  [(set (match_operand:SI 0 "arith_reg_dest")
        (plus:SI (match_operand:SI 1 "arith_reg_operand")
                 (match_operand 2 "treg_set_expr_not_const01")))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1 && can_create_pseudo_p ()"
  "#"
  "&& 1"
  [(parallel [(set (match_dup 0) (plus:SI (plus:SI (match_dup 1) (const_int 0))
                                          (match_dup 2)))
              (clobber (reg:SI T_REG))])])

;; Convert '2 * reg + T' into 'reg + reg + T'.
(define_insn_and_split "*addc_2r_t"
  [(set (match_operand:SI 0 "arith_reg_dest")
        (plus:SI (match_operand 1 "treg_set_expr")
                 (ashift:SI (match_operand:SI 2 "arith_reg_operand")
                            (const_int 1))))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1 && can_create_pseudo_p ()"
  "#"
  "&& 1"
  [(parallel [(set (match_dup 0) (plus:SI (plus:SI (match_dup 2) (match_dup 2))
                                          (match_dup 1)))
              (clobber (reg:SI T_REG))])])

(define_insn_and_split "*addc_2r_t"
  [(set (match_operand:SI 0 "arith_reg_dest")
        (plus:SI (ashift:SI (match_operand:SI 1 "arith_reg_operand")
                            (const_int 1))
                 (match_operand 2 "treg_set_expr")))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1 && can_create_pseudo_p ()"
  "#"
  "&& 1"
  [(parallel [(set (match_dup 0) (plus:SI (plus:SI (match_dup 1) (match_dup 1))
                                          (match_dup 2)))
              (clobber (reg:SI T_REG))])])

;; Convert '(op2 + T) - op3' into 'op2 + (-op3) + T'
(define_insn_and_split "*addc_negreg_t"
  [(set (match_operand:SI 0 "arith_reg_dest")
        (minus:SI (plus:SI (match_operand 1 "treg_set_expr")
                           (match_operand:SI 2 "arith_reg_operand"))
                  (match_operand:SI 3 "arith_reg_operand")))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1 && can_create_pseudo_p ()"
  "#"
  "&& 1"
  [(set (match_dup 4) (neg:SI (match_dup 3)))
   (parallel [(set (match_dup 0) (plus:SI (plus:SI (match_dup 2) (match_dup 4))
                                          (match_dup 1)))
              (clobber (reg:SI T_REG))])]
{
  operands[4] = gen_reg_rtx (SImode);
})

(define_expand "addsi3"
  [(set (match_operand:SI 0 "arith_reg_dest")
        (plus:SI (match_operand:SI 1 "arith_reg_operand")
                 (match_operand:SI 2 "arith_or_int_operand")))]
  ""
{
  if (!arith_operand (operands[2], SImode))
    {
      if (!sh_lra_p () || reg_overlap_mentioned_p (operands[0], operands[1]))
        {
          emit_insn (gen_addsi3_scr (operands[0], operands[1], operands[2]));
          DONE;
        }
    }
})

;; The *addsi3_compact is made an insn_and_split and accepts actually
;; impossible constraints to make LRA's register elimination work well on SH.
;; The problem is that LRA expects something like
;;    (set rA (plus rB (const_int N)))
;; to work.  We can do that, but we have to split out an additional reg-reg
;; copy or constant load before the actual add insn.
;; Use u constraint for that case to avoid the invalid value in the stack
;; pointer.
;; This also results in better code when LRA is not used.  However, we have
;; to use different sets of patterns and the order of these patterns is
;; important.
;; In some cases the constant zero might end up in operands[2] of the
;; patterns.  We have to accept that and convert it into a reg-reg move.
(define_insn_and_split "*addsi3_compact_lra"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r,&u")
        (plus:SI (match_operand:SI 1 "arith_reg_operand" "%0,r")
                 (match_operand:SI 2 "arith_or_int_operand" "rI08,rn")))]
  "TARGET_SH1 && sh_lra_p ()
   && (! reg_overlap_mentioned_p (operands[0], operands[1])
       || arith_operand (operands[2], SImode))"
  "@
        add     %2,%0
        #"
  "&& reload_completed
   && ! reg_overlap_mentioned_p (operands[0], operands[1])"
  [(set (match_dup 0) (match_dup 2))
   (set (match_dup 0) (plus:SI (match_dup 0) (match_dup 1)))]
{
  /* Prefer 'mov r0,r1; add #imm8,r1' over 'mov #imm8,r1; add r0,r1'  */
  if (satisfies_constraint_I08 (operands[2]))
    std::swap (operands[1], operands[2]);
}
  [(set_attr "type" "arith")])

(define_insn_and_split "addsi3_scr"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r,&u,&u")
        (plus:SI (match_operand:SI 1 "arith_reg_operand" "%0,r,r")
                 (match_operand:SI 2 "arith_or_int_operand" "rI08,r,n")))
   (clobber (match_scratch:SI 3 "=X,X,&u"))]
  "TARGET_SH1"
  "@
        add     %2,%0
        #
        #"
  "&& reload_completed"
  [(set (match_dup 0) (plus:SI (match_dup 0) (match_dup 2)))]
{
  if (operands[2] == const0_rtx)
    {
      emit_move_insn (operands[0], operands[1]);
      DONE;
    }

  if (CONST_INT_P (operands[2]) && !satisfies_constraint_I08 (operands[2]))
    {
      if (reg_overlap_mentioned_p (operands[0], operands[1]))
        {
          emit_move_insn (operands[3], operands[2]);
          emit_move_insn (operands[0], operands[1]);
          operands[2] = operands[3];
        }
      else
        {
          emit_move_insn (operands[0], operands[2]);
          operands[2] = operands[1];
        }
    }
  else if (!reg_overlap_mentioned_p (operands[0], operands[1]))
    {
      if (!reg_overlap_mentioned_p (operands[0], operands[2]))
        emit_move_insn (operands[0], operands[1]);
      else
        operands[2] = operands[1];
    }
}
  [(set_attr "type" "arith")])

;; Old reload might generate add insns directly (not through the expander) for
;; address register calculations when reloading, in which case it won't try
;; the addsi_scr pattern.  Because reload will sometimes try to validate
;; the generated insns and their constraints, this pattern must be
;; recognizable during and after reload.  However, when reload generates
;; address register calculations for the stack pointer, we don't allow this
;; pattern.  This will make reload prefer using indexed @(reg + reg) address
;; modes when the displacement of a @(disp + reg) doesn't fit.
(define_insn_and_split "*addsi3"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r")
        (plus:SI (match_operand:SI 1 "arith_reg_operand" "r")
                 (match_operand:SI 2 "arith_or_int_operand" "rn")))]
  "TARGET_SH1 && !sh_lra_p ()
   && (reload_completed || reload_in_progress)
   && !reg_overlap_mentioned_p (operands[0], operands[1])
   && (!reload_in_progress
       || ((!REG_P (operands[1]) || REGNO (operands[1]) != SP_REG)
           && (!REG_P (operands[2]) || REGNO (operands[2]) != SP_REG)))"
  "#"
  "&& 1"
  [(set (match_dup 0) (plus:SI (match_dup 0) (match_dup 2)))]
{
  if (operands[2] == const0_rtx)
    {
      emit_move_insn (operands[0], operands[1]);
      DONE;
    }

  if (CONST_INT_P (operands[2]))
    {
      if (satisfies_constraint_I08 (operands[2]))
        emit_move_insn (operands[0], operands[1]);
      else
        {
          emit_move_insn (operands[0], operands[2]);
          operands[2] = operands[1];
        }
    }
  else if (!reg_overlap_mentioned_p (operands[0], operands[2]))
    emit_move_insn (operands[0], operands[1]);
  else
    operands[2] = operands[1];
})

(define_insn_and_split "*addsi3"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r,r")
        (plus:SI (match_operand:SI 1 "arith_reg_operand" "%0,r")
                 (match_operand:SI 2 "arith_operand" "rI08,Z")))]
  "TARGET_SH1 && !sh_lra_p ()"
  "@
        add     %2,%0
        #"
  "&& operands[2] == const0_rtx"
  [(set (match_dup 0) (match_dup 1))]
{
}
  [(set_attr "type" "arith")])

;; -------------------------------------------------------------------------
;; Subtraction instructions
;; -------------------------------------------------------------------------

(define_insn_and_split "subdi3"
  [(set (match_operand:DI 0 "arith_reg_dest")
        (minus:DI (match_operand:DI 1 "arith_reg_operand")
                  (match_operand:DI 2 "arith_reg_operand")))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1"
  "#"
  "&& can_create_pseudo_p ()"
  [(const_int 0)]
{
  emit_insn (gen_clrt ());
  emit_insn (gen_subc (gen_lowpart (SImode, operands[0]),
                       gen_lowpart (SImode, operands[1]),
                       gen_lowpart (SImode, operands[2])));
  emit_insn (gen_subc (gen_highpart (SImode, operands[0]),
                       gen_highpart (SImode, operands[1]),
                       gen_highpart (SImode, operands[2])));
  DONE;
})

(define_insn "subc"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r")
        (minus:SI (minus:SI (match_operand:SI 1 "arith_reg_operand" "0")
                            (match_operand:SI 2 "arith_reg_operand" "r"))
                  (reg:SI T_REG)))
   (set (reg:SI T_REG)
        (gtu:SI (minus:SI (minus:SI (match_dup 1) (match_dup 2))
                          (reg:SI T_REG))
                (match_dup 1)))]
  "TARGET_SH1"
  "subc %2,%0"
  [(set_attr "type" "arith")])

;; A simplified version of the subc insn, where the exact value of the
;; T bit doesn't matter.  This is easier for combine to pick up.
;; We allow a reg or 0 for one of the operands in order to be able to
;; do 'reg - T' sequences.  Reload will load the constant 0 into the reg
;; as needed.
(define_insn_and_split "*subc"
  [(set (match_operand:SI 0 "arith_reg_dest")
        (minus:SI (minus:SI (match_operand:SI 1 "arith_reg_operand")
                            (match_operand:SI 2 "arith_reg_or_0_operand"))
                  (match_operand 3 "treg_set_expr")))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1 && can_create_pseudo_p ()"
  "#"
  "&& 1"
  [(const_int 0)]
{
  sh_treg_insns ti = sh_split_treg_set_expr (operands[3], curr_insn);
  if (ti.has_trailing_nott ())
    {
      if (operands[2] == const0_rtx)
        {
          /* op1 - (1 - T) = op1 - 1 + T = op1 + (-1) + T  */
          remove_insn (ti.trailing_nott ());
          emit_insn (gen_addc (operands[0], operands[1],
                               force_reg (SImode, GEN_INT (-1))));
          DONE;
        }
      else if (!TARGET_SH2A)
        {
          /* op1 - op2 - (1 - T) = op1 + (0 - op2 - 1) + T = op1 + ~op2 + T
             On SH2A keep the nott insn, because nott-subc sequence doesn't
             mutate the inputs.  */
          remove_insn (ti.trailing_nott ());
          rtx tmp = gen_reg_rtx (SImode);
          emit_insn (gen_one_cmplsi2 (tmp, operands[2]));
          emit_insn (gen_addc (operands[0], operands[1], tmp));
          DONE;
        }
    }

  emit_insn (gen_subc (operands[0], operands[1],
                       force_reg (SImode, operands[2])));
  DONE;
})

;; Convert reg - T - reg = reg - reg - T
(define_insn_and_split "*subc"
  [(set (match_operand:SI 0 "arith_reg_dest")
        (minus:SI (minus:SI (match_operand:SI 1 "arith_reg_operand")
                            (match_operand 2 "treg_set_expr"))
                  (match_operand:SI 3 "arith_reg_operand")))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1 && can_create_pseudo_p ()"
  "#"
  "&& 1"
  [(parallel [(set (match_dup 0)
                   (minus:SI (minus:SI (match_dup 1) (match_dup 3))
                             (match_dup 2)))
              (clobber (reg:SI T_REG))])])

;; Split reg - reg - 1 into a sett subc sequence, as it can be scheduled
;; better, if the sett insn can be done early.
;; Notice that combine turns 'a - b - 1' into 'a + (~b)'.
(define_insn_and_split "*subc"
  [(set (match_operand:SI 0 "arith_reg_dest" "")
        (plus:SI (not:SI (match_operand:SI 1 "arith_reg_operand" ""))
                 (match_operand:SI 2 "arith_reg_operand" "")))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1 && can_create_pseudo_p ()"
  "#"
  "&& 1"
  [(parallel [(set (match_dup 0)
                   (minus:SI (minus:SI (match_dup 2) (match_dup 1))
                             (const_int 1)))
              (clobber (reg:SI T_REG))])])

;; Split 'reg - T' into 'reg - 0 - T' to utilize the subc insn.
;; If the 0 constant can be CSE-ed, this becomes a one instruction
;; operation, as opposed to sequences such as
;;      movt    r2
;;      sub     r2,r3
;;
;; Even if the constant is not CSE-ed, a sequence such as
;;      mov     #0,r2
;;      subc    r2,r3
;; can be scheduled much better since the load of the constant can be
;; done earlier, before any comparison insns that store the result in
;; the T bit.
;; However, avoid things like 'reg - 1', which would expand into a
;; 3 insn sequence, instead of add #imm8.
(define_insn_and_split "*subc"
  [(set (match_operand:SI 0 "arith_reg_dest" "")
        (minus:SI (match_operand:SI 1 "arith_reg_operand" "")
                  (match_operand 2 "treg_set_expr_not_const01")))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1 && can_create_pseudo_p ()"
  "#"
  "&& 1"
  [(parallel [(set (match_dup 0)
                   (minus:SI (minus:SI (match_dup 1) (const_int 0))
                             (match_dup 2)))
              (clobber (reg:SI T_REG))])])

;; Convert
;;   (1 - T) - op2 = 1 - op2 - T
(define_insn_and_split "*subc_negt_reg"
  [(set (match_operand:SI 0 "arith_reg_dest")
        (minus:SI (match_operand 1 "treg_set_expr_not_const01")
                  (match_operand:SI 2 "arith_reg_operand")))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1 && can_create_pseudo_p ()"
  "#"
  "&& 1"
  [(const_int 0)]
{
  sh_treg_insns ti = sh_split_treg_set_expr (operands[1], curr_insn);
  if (ti.remove_trailing_nott ())
    {
      /* (1 - T) - op2 = 1 - op2 - T  */
      emit_insn (gen_subc (operands[0],
                           force_reg (SImode, GEN_INT (1)), operands[2]));
    }
  else
    {
      /* T - op2: use movt,sub sequence.  */
      rtx tmp = gen_reg_rtx (SImode);
      emit_insn (gen_movt (tmp, get_t_reg_rtx ()));
      emit_insn (gen_subsi3 (operands[0], tmp, operands[2]));
    }
  DONE;
})

;; Convert
;;   op1 - (1 - T) + op3 = op1 - 1 + T + op3
;;   (op1 - T) + op3 = op1 - (-op3) - T
(define_insn_and_split "*subc_negreg_t"
  [(set (match_operand:SI 0 "arith_reg_dest")
        (plus:SI (minus:SI (match_operand:SI 1 "arith_reg_operand")
                           (match_operand 2 "treg_set_expr"))
                 (match_operand:SI 3 "arith_reg_operand")))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1 && can_create_pseudo_p ()"
  "#"
  "&& 1"
  [(const_int 0)]
{
  sh_treg_insns ti = sh_split_treg_set_expr (operands[2], curr_insn);
  if (ti.remove_trailing_nott ())
    {
      /* op1 - (1 - T) + op3 = (op1 - 1) + op3 + T  */
      rtx tmp = gen_reg_rtx (SImode);
      emit_insn (gen_addsi3 (tmp, operands[1], GEN_INT (-1)));
      emit_insn (gen_addc (operands[0], tmp, operands[3]));
    }
  else
    {
      /* (op1 - T) + op3' = 'op1 - (-op3) - T  */
      rtx tmp = gen_reg_rtx (SImode);
      emit_insn (gen_negsi2 (tmp, operands[3]));
      emit_insn (gen_subc (operands[0], operands[1], tmp));
    }
  DONE;
})

(define_insn "*subsi3_internal"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r")
        (minus:SI (match_operand:SI 1 "arith_reg_operand" "0")
                  (match_operand:SI 2 "arith_reg_operand" "r")))]
  "TARGET_SH1"
  "sub  %2,%0"
  [(set_attr "type" "arith")])

;; Convert
;;      constant - reg
;; to
;;      neg reg
;;      add reg, #const
;; since this will sometimes save one instruction.
;; Otherwise we might get a sequence like
;;      mov #const, rY
;;      sub rY, rX
;;      mov rX, rY
;; if the source and dest regs are the same.
(define_expand "subsi3"
  [(set (match_operand:SI 0 "arith_reg_operand" "")
        (minus:SI (match_operand:SI 1 "arith_operand" "")
                  (match_operand:SI 2 "arith_reg_operand" "")))]
  ""
{
  if (CONST_INT_P (operands[1]))
    {
      emit_insn (gen_negsi2 (operands[0], operands[2]));
      emit_insn (gen_addsi3 (operands[0], operands[0], operands[1]));
      DONE;
    }
})
\f
;; -------------------------------------------------------------------------
;; Division instructions
;; -------------------------------------------------------------------------

;; We take advantage of the library routines which don't clobber as many
;; registers as a normal function call would.

;; The INSN_REFERENCES_ARE_DELAYED in sh.h is problematic because it
;; also has an effect on the register that holds the address of the sfunc.
;; To make this work, we have an extra dummy insn that shows the use
;; of this register for reorg.

(define_insn "use_sfunc_addr"
  [(set (reg:SI PR_REG)
        (unspec:SI [(match_operand:SI 0 "register_operand" "r")] UNSPEC_SFUNC))]
  "TARGET_SH1 && check_use_sfunc_addr (insn, operands[0])"
  ""
  [(set_attr "length" "0")])

(define_insn "udivsi3_sh2a"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r")
        (udiv:SI (match_operand:SI 1 "arith_reg_operand" "0")
                (match_operand:SI 2 "arith_reg_operand" "z")))]
  "TARGET_SH2A"
  "divu %2,%1"
  [(set_attr "type" "arith")
   (set_attr "in_delay_slot" "no")])

;; We must use a pseudo-reg forced to reg 0 in the SET_DEST rather than
;; hard register 0.  If we used hard register 0, then the next instruction
;; would be a move from hard register 0 to a pseudo-reg.  If the pseudo-reg
;; gets allocated to a stack slot that needs its address reloaded, then
;; there is nothing to prevent reload from using r0 to reload the address.
;; This reload would clobber the value in r0 we are trying to store.
;; If we let reload allocate r0, then this problem can never happen.
(define_insn "udivsi3_i1"
  [(set (match_operand:SI 0 "register_operand" "=z,z")
        (udiv:SI (reg:SI R4_REG) (reg:SI R5_REG)))
   (clobber (reg:SI T_REG))
   (clobber (reg:SI PR_REG))
   (clobber (reg:SI R1_REG))
   (clobber (reg:SI R4_REG))
   (use (match_operand:SI 1 "arith_reg_operand" "r,r"))
   (use (match_operand 2 "" "Z,Ccl"))]
  "TARGET_SH1 && TARGET_DIVIDE_CALL_DIV1"
  "@
        jsr     @%1%#
        bsrf    %1\n%O2:%#"
  [(set_attr "type" "sfunc")
   (set_attr "needs_delay_slot" "yes")])

(define_insn "udivsi3_i4"
  [(set (match_operand:SI 0 "register_operand" "=y,y")
        (udiv:SI (reg:SI R4_REG) (reg:SI R5_REG)))
   (clobber (reg:SI T_REG))
   (clobber (reg:SI PR_REG))
   (clobber (reg:DF DR0_REG))
   (clobber (reg:DF DR2_REG))
   (clobber (reg:DF DR4_REG))
   (clobber (reg:SI R0_REG))
   (clobber (reg:SI R1_REG))
   (clobber (reg:SI R4_REG))
   (clobber (reg:SI R5_REG))
   (clobber (reg:SI FPSCR_STAT_REG))
   (use (match_operand:SI 1 "arith_reg_operand" "r,r"))
   (use (match_operand 2 "" "Z,Ccl"))
   (use (reg:SI FPSCR_MODES_REG))]
  "TARGET_FPU_DOUBLE && ! TARGET_FPU_SINGLE"
  "@
        jsr     @%1%#
        bsrf    %1\n%O2:%#"
  [(set_attr "type" "sfunc")
   (set_attr "fp_mode" "double")
   (set_attr "needs_delay_slot" "yes")])

(define_insn "udivsi3_i4_single"
  [(set (match_operand:SI 0 "register_operand" "=y,y")
        (udiv:SI (reg:SI R4_REG) (reg:SI R5_REG)))
   (clobber (reg:SI T_REG))
   (clobber (reg:SI PR_REG))
   (clobber (reg:DF DR0_REG))
   (clobber (reg:DF DR2_REG))
   (clobber (reg:DF DR4_REG))
   (clobber (reg:SI R0_REG))
   (clobber (reg:SI R1_REG))
   (clobber (reg:SI R4_REG))
   (clobber (reg:SI R5_REG))
   (use (match_operand:SI 1 "arith_reg_operand" "r,r"))
   (use (match_operand 2 "" "Z,Ccl"))]
  "TARGET_FPU_ANY && TARGET_FPU_SINGLE"
  "@
        jsr     @%1%#
        bsrf    %1\n%O2:%#"
  [(set_attr "type" "sfunc")
   (set_attr "needs_delay_slot" "yes")])

(define_insn "udivsi3_i4_int"
  [(set (match_operand:SI 0 "register_operand" "=z")
        (udiv:SI (reg:SI R4_REG) (reg:SI R5_REG)))
   (clobber (reg:SI T_REG))
   (clobber (reg:SI R1_REG))
   (clobber (reg:SI PR_REG))
   (clobber (reg:SI MACH_REG))
   (clobber (reg:SI MACL_REG))
   (use (match_operand:SI 1 "arith_reg_operand" "r"))]
  "TARGET_SH1"
  "jsr  @%1%#"
  [(set_attr "type" "sfunc")
   (set_attr "needs_delay_slot" "yes")])


(define_expand "udivsi3"
  [(set (match_operand:SI 0 "register_operand")
        (udiv:SI (match_operand:SI 1 "general_operand")
                 (match_operand:SI 2 "general_operand")))]
  ""
{
  rtx last;

  operands[3] = gen_reg_rtx (Pmode);
  /* Emit the move of the address to a pseudo outside of the libcall.  */
  if (TARGET_DIVIDE_CALL_TABLE)
    {
      /* libgcc2:__udivmoddi4 is not supposed to use an actual division, since
         that causes problems when the divide code is supposed to come from a
         separate library.  Division by zero is undefined, so dividing 1 can be
         implemented by comparing with the divisor.  */
      if (operands[1] == const1_rtx && currently_expanding_to_rtl)
        {
          rtx test = gen_rtx_GEU (VOIDmode, operands[1], operands[2]);
          emit_insn (gen_cstoresi4 (operands[0], test,
                                    operands[1], operands[2]));
          DONE;
        }
      else if (operands[2] == const0_rtx)
        {
          emit_move_insn (operands[0], operands[2]);
          DONE;
        }
      function_symbol (operands[3], "__udivsi3_i4i", SFUNC_GOT);
      last = gen_udivsi3_i4_int (operands[0], operands[3]);
    }
  else if (TARGET_DIVIDE_CALL_FP)
    {
      rtx lab = function_symbol (operands[3], "__udivsi3_i4", SFUNC_STATIC).lab;
      if (TARGET_FPU_SINGLE)
        last = gen_udivsi3_i4_single (operands[0], operands[3], lab);
      else
        last = gen_udivsi3_i4 (operands[0], operands[3], lab);
    }
  else if (TARGET_SH2A)
    {
      operands[1] = force_reg (SImode, operands[1]);
      operands[2] = force_reg (SImode, operands[2]);
      emit_insn (gen_udivsi3_sh2a (operands[0], operands[1], operands[2]));
      DONE;
    }
  else
    {
      rtx lab = function_symbol (operands[3], "__udivsi3", SFUNC_STATIC).lab;
      last = gen_udivsi3_i1 (operands[0], operands[3], lab);
    }
  emit_move_insn (gen_rtx_REG (SImode, 4), operands[1]);
  emit_move_insn (gen_rtx_REG (SImode, 5), operands[2]);
  emit_insn (last);
  DONE;
})

(define_insn "divsi3_sh2a"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r")
        (div:SI (match_operand:SI 1 "arith_reg_operand" "0")
                (match_operand:SI 2 "arith_reg_operand" "z")))]
  "TARGET_SH2A"
  "divs %2,%1"
  [(set_attr "type" "arith")
   (set_attr "in_delay_slot" "no")])

(define_insn "divsi3_i1"
  [(set (match_operand:SI 0 "register_operand" "=z")
        (div:SI (reg:SI R4_REG) (reg:SI R5_REG)))
   (clobber (reg:SI T_REG))
   (clobber (reg:SI PR_REG))
   (clobber (reg:SI R1_REG))
   (clobber (reg:SI R2_REG))
   (clobber (reg:SI R3_REG))
   (use (match_operand:SI 1 "arith_reg_operand" "r"))]
  "TARGET_SH1 && TARGET_DIVIDE_CALL_DIV1"
  "jsr  @%1%#"
  [(set_attr "type" "sfunc")
   (set_attr "needs_delay_slot" "yes")])

(define_insn "divsi3_i4"
  [(set (match_operand:SI 0 "register_operand" "=y,y")
        (div:SI (reg:SI R4_REG) (reg:SI R5_REG)))
   (clobber (reg:SI PR_REG))
   (clobber (reg:DF DR0_REG))
   (clobber (reg:DF DR2_REG))
   (clobber (reg:SI FPSCR_STAT_REG))
   (use (match_operand:SI 1 "arith_reg_operand" "r,r"))
   (use (match_operand 2 "" "Z,Ccl"))
   (use (reg:SI FPSCR_MODES_REG))]
  "TARGET_FPU_DOUBLE && ! TARGET_FPU_SINGLE"
  "@
        jsr     @%1%#
        bsrf    %1\n%O2:%#"
  [(set_attr "type" "sfunc")
   (set_attr "fp_mode" "double")
   (set_attr "needs_delay_slot" "yes")])

(define_insn "divsi3_i4_single"
  [(set (match_operand:SI 0 "register_operand" "=y,y")
        (div:SI (reg:SI R4_REG) (reg:SI R5_REG)))
   (clobber (reg:SI PR_REG))
   (clobber (reg:DF DR0_REG))
   (clobber (reg:DF DR2_REG))
   (clobber (reg:SI R2_REG))
   (use (match_operand:SI 1 "arith_reg_operand" "r,r"))
   (use (match_operand 2 "" "Z,Ccl"))]
  "TARGET_FPU_ANY && TARGET_FPU_SINGLE"
  "@
        jsr     @%1%#
        bsrf    %1\n%O2:%#"
  [(set_attr "type" "sfunc")
   (set_attr "needs_delay_slot" "yes")])

(define_insn "divsi3_i4_int"
  [(set (match_operand:SI 0 "register_operand" "=z")
        (div:SI (reg:SI R4_REG) (reg:SI R5_REG)))
   (clobber (reg:SI T_REG))
   (clobber (reg:SI PR_REG))
   (clobber (reg:SI R1_REG))
   (clobber (reg:SI MACH_REG))
   (clobber (reg:SI MACL_REG))
   (use (match_operand:SI 1 "arith_reg_operand" "r"))]
  "TARGET_SH1"
  "jsr  @%1%#"
  [(set_attr "type" "sfunc")
   (set_attr "needs_delay_slot" "yes")])

(define_expand "divsi3"
  [(set (match_operand:SI 0 "register_operand")
        (div:SI (match_operand:SI 1 "general_operand")
                (match_operand:SI 2 "general_operand")))]
  ""
{
  rtx last;

  operands[3] = gen_reg_rtx (Pmode);
  /* Emit the move of the address to a pseudo outside of the libcall.  */
  if (TARGET_DIVIDE_CALL_TABLE)
    {
      function_symbol (operands[3], sh_divsi3_libfunc, SFUNC_GOT);
      last = gen_divsi3_i4_int (operands[0], operands[3]);
    }
  else if (TARGET_DIVIDE_CALL_FP)
    {
      rtx lab = function_symbol (operands[3], sh_divsi3_libfunc,
                                 SFUNC_STATIC).lab;
      if (TARGET_FPU_SINGLE)
        last = gen_divsi3_i4_single (operands[0], operands[3], lab);
      else
        last = gen_divsi3_i4 (operands[0], operands[3], lab);
    }
  else if (TARGET_SH2A)
    {
      operands[1] = force_reg (SImode, operands[1]);
      operands[2] = force_reg (SImode, operands[2]);
      emit_insn (gen_divsi3_sh2a (operands[0], operands[1], operands[2]));
      DONE;
    }
  else
    {
      function_symbol (operands[3], sh_divsi3_libfunc, SFUNC_GOT);
      last = gen_divsi3_i1 (operands[0], operands[3]);
    }
  emit_move_insn (gen_rtx_REG (SImode, 4), operands[1]);
  emit_move_insn (gen_rtx_REG (SImode, 5), operands[2]);
  emit_insn (last);
  DONE;
})

\f
;; -------------------------------------------------------------------------
;; Multiplication instructions
;; -------------------------------------------------------------------------

(define_insn_and_split "mulhisi3"
  [(set (match_operand:SI 0 "arith_reg_dest")
        (mult:SI (sign_extend:SI (match_operand:HI 1 "arith_reg_operand"))
                 (sign_extend:SI (match_operand:HI 2 "arith_reg_operand"))))
   (clobber (reg:SI MACL_REG))]
  "TARGET_SH1 && can_create_pseudo_p ()"
  "#"
  "&& 1"
  [(set (reg:SI MACL_REG) (mult:SI (sign_extend:SI (match_dup 1))
                                   (sign_extend:SI (match_dup 2))))
   (set (match_dup 0) (reg:SI MACL_REG))])

(define_insn_and_split "umulhisi3"
  [(set (match_operand:SI 0 "arith_reg_dest")
        (mult:SI (zero_extend:SI (match_operand:HI 1 "arith_reg_operand"))
                 (zero_extend:SI (match_operand:HI 2 "arith_reg_operand"))))
   (clobber (reg:SI MACL_REG))]
  "TARGET_SH1 && can_create_pseudo_p ()"
  "#"
  "&& 1"
  [(set (reg:SI MACL_REG) (mult:SI (zero_extend:SI (match_dup 1))
                                   (zero_extend:SI (match_dup 2))))
   (set (match_dup 0) (reg:SI MACL_REG))])

(define_insn "umulhisi3_i"
  [(set (reg:SI MACL_REG)
        (mult:SI (zero_extend:SI
                  (match_operand:HI 0 "arith_reg_operand" "r"))
                 (zero_extend:SI
                  (match_operand:HI 1 "arith_reg_operand" "r"))))]
  "TARGET_SH1"
  "mulu.w       %1,%0"
  [(set_attr "type" "smpy")])

(define_insn "mulhisi3_i"
  [(set (reg:SI MACL_REG)
        (mult:SI (sign_extend:SI
                  (match_operand:HI 0 "arith_reg_operand" "r"))
                 (sign_extend:SI
                  (match_operand:HI 1 "arith_reg_operand" "r"))))]
  "TARGET_SH1"
  "muls.w       %1,%0"
  [(set_attr "type" "smpy")])


;; mulsi3 on the SH2 can be done in one instruction, on the SH1 we generate
;; a call to a routine which clobbers known registers.
(define_insn "mulsi3_call"
  [(set (match_operand:SI 1 "register_operand" "=z")
        (mult:SI (reg:SI R4_REG) (reg:SI R5_REG)))
   (clobber (reg:SI MACL_REG))
   (clobber (reg:SI T_REG))
   (clobber (reg:SI PR_REG))
   (clobber (reg:SI R3_REG))
   (clobber (reg:SI R2_REG))
   (clobber (reg:SI R1_REG))
   (use (match_operand:SI 0 "arith_reg_operand" "r"))]
  "TARGET_SH1"
  "jsr  @%0%#"
  [(set_attr "type" "sfunc")
   (set_attr "needs_delay_slot" "yes")])

(define_insn "mul_r"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r")
        (mult:SI (match_operand:SI 1 "arith_reg_operand" "0")
                 (match_operand:SI 2 "arith_reg_operand" "z")))]
  "TARGET_SH2A"
  "mulr %2,%0"
  [(set_attr "type" "dmpy")])

(define_insn "mul_l"
  [(set (reg:SI MACL_REG)
        (mult:SI (match_operand:SI 0 "arith_reg_operand" "r")
                 (match_operand:SI 1 "arith_reg_operand" "r")))]
  "TARGET_SH2"
  "mul.l        %1,%0"
  [(set_attr "type" "dmpy")])

(define_insn_and_split "mulsi3_i"
  [(set (match_operand:SI 0 "arith_reg_dest")
        (mult:SI (match_operand:SI 1 "arith_reg_operand")
                 (match_operand:SI 2 "arith_reg_operand")))
   (clobber (reg:SI MACL_REG))]
  "TARGET_SH2 && can_create_pseudo_p ()"
  "#"
  "&& 1"
  [(set (reg:SI MACL_REG) (mult:SI (match_dup 1) (match_dup 2)))
   (set (match_dup 0) (reg:SI MACL_REG))])

(define_expand "mulsi3"
  [(set (match_operand:SI 0 "arith_reg_dest")
        (mult:SI (match_operand:SI 1 "arith_reg_operand")
                 (match_operand:SI 2 "arith_reg_operand")))]
  "TARGET_SH1"
{
  if (!TARGET_SH2)
    {
      emit_move_insn (gen_rtx_REG (SImode, R4_REG), operands[1]);
      emit_move_insn (gen_rtx_REG (SImode, R5_REG), operands[2]);

      rtx sym = function_symbol (NULL, "__mulsi3", SFUNC_STATIC).sym;

      emit_insn (gen_mulsi3_call (force_reg (SImode, sym), operands[0]));
    }
  else
    {
      /* FIXME: For some reason, expanding the mul_l insn and the macl store
         insn early gives slightly better code.  In particular it prevents
         the decrement-test loop type to be used in some cases which saves
         one multiplication in the loop setup code.

         emit_insn (gen_mulsi3_i (operands[0], operands[1], operands[2]));
      */

      emit_insn (gen_mul_l (operands[1], operands[2]));
      emit_move_insn (operands[0], gen_rtx_REG (SImode, MACL_REG));
    }
  DONE;
})

(define_insn "mulsidi3_i"
  [(set (reg:SI MACH_REG)
        (truncate:SI
         (lshiftrt:DI
          (mult:DI
           (sign_extend:DI (match_operand:SI 0 "arith_reg_operand" "r"))
           (sign_extend:DI (match_operand:SI 1 "arith_reg_operand" "r")))
          (const_int 32))))
   (set (reg:SI MACL_REG)
        (mult:SI (match_dup 0)
                 (match_dup 1)))]
  "TARGET_SH2"
  "dmuls.l      %1,%0"
  [(set_attr "type" "dmpy")])

(define_expand "mulsidi3"
  [(set (match_operand:DI 0 "arith_reg_dest")
        (mult:DI (sign_extend:DI (match_operand:SI 1 "arith_reg_operand"))
                 (sign_extend:DI (match_operand:SI 2 "arith_reg_operand"))))]
  "TARGET_SH2"
{
  emit_insn (gen_mulsidi3_compact (operands[0], operands[1], operands[2]));
  DONE;
})

(define_insn_and_split "mulsidi3_compact"
  [(set (match_operand:DI 0 "arith_reg_dest")
        (mult:DI (sign_extend:DI (match_operand:SI 1 "arith_reg_operand"))
                 (sign_extend:DI (match_operand:SI 2 "arith_reg_operand"))))
   (clobber (reg:SI MACH_REG))
   (clobber (reg:SI MACL_REG))]
  "TARGET_SH2 && can_create_pseudo_p ()"
  "#"
  "&& 1"
  [(const_int 0)]
{
  rtx low_dst = gen_lowpart (SImode, operands[0]);
  rtx high_dst = gen_highpart (SImode, operands[0]);

  emit_insn (gen_mulsidi3_i (operands[1], operands[2]));

  emit_move_insn (low_dst, gen_rtx_REG (SImode, MACL_REG));
  emit_move_insn (high_dst, gen_rtx_REG (SImode, MACH_REG));
  /* We need something to tag the possible REG_EQUAL notes on to.  */
  emit_move_insn (operands[0], operands[0]);
  DONE;
})

(define_insn "umulsidi3_i"
  [(set (reg:SI MACH_REG)
        (truncate:SI
         (lshiftrt:DI
          (mult:DI
           (zero_extend:DI (match_operand:SI 0 "arith_reg_operand" "r"))
           (zero_extend:DI (match_operand:SI 1 "arith_reg_operand" "r")))
          (const_int 32))))
   (set (reg:SI MACL_REG)
        (mult:SI (match_dup 0)
                 (match_dup 1)))]
  "TARGET_SH2"
  "dmulu.l      %1,%0"
  [(set_attr "type" "dmpy")])

(define_expand "umulsidi3"
  [(set (match_operand:DI 0 "arith_reg_dest")
        (mult:DI (zero_extend:DI (match_operand:SI 1 "arith_reg_operand"))
                 (zero_extend:DI (match_operand:SI 2 "arith_reg_operand"))))]
  "TARGET_SH2"
{
  emit_insn (gen_umulsidi3_compact (operands[0], operands[1], operands[2]));
  DONE;
})

(define_insn_and_split "umulsidi3_compact"
  [(set (match_operand:DI 0 "arith_reg_dest")
        (mult:DI (zero_extend:DI (match_operand:SI 1 "arith_reg_operand"))
                 (zero_extend:DI (match_operand:SI 2 "arith_reg_operand"))))
   (clobber (reg:SI MACH_REG))
   (clobber (reg:SI MACL_REG))]
  "TARGET_SH2 && can_create_pseudo_p ()"
  "#"
  "&& 1"
  [(const_int 0)]
{
  rtx low_dst = gen_lowpart (SImode, operands[0]);
  rtx high_dst = gen_highpart (SImode, operands[0]);

  emit_insn (gen_umulsidi3_i (operands[1], operands[2]));

  emit_move_insn (low_dst, gen_rtx_REG (SImode, MACL_REG));
  emit_move_insn (high_dst, gen_rtx_REG (SImode, MACH_REG));
  /* We need something to tag the possible REG_EQUAL notes on to.  */
  emit_move_insn (operands[0], operands[0]);
  DONE;
})

(define_insn "smulsi3_highpart_i"
  [(set (reg:SI MACH_REG)
        (truncate:SI
         (lshiftrt:DI
          (mult:DI
           (sign_extend:DI (match_operand:SI 0 "arith_reg_operand" "r"))
           (sign_extend:DI (match_operand:SI 1 "arith_reg_operand" "r")))
          (const_int 32))))
   (clobber (reg:SI MACL_REG))]
  "TARGET_SH2"
  "dmuls.l      %1,%0"
  [(set_attr "type" "dmpy")])

(define_insn_and_split "smulsi3_highpart"
  [(set (match_operand:SI 0 "arith_reg_dest")
        (truncate:SI
          (lshiftrt:DI
            (mult:DI
              (sign_extend:DI (match_operand:SI 1 "arith_reg_operand"))
              (sign_extend:DI (match_operand:SI 2 "arith_reg_operand")))
          (const_int 32))))
   (clobber (reg:SI MACL_REG))
   (clobber (reg:SI MACH_REG))]
  "TARGET_SH2 && can_create_pseudo_p ()"
  "#"
  "&& 1"
  [(const_int 0)]
{
  emit_insn (gen_smulsi3_highpart_i (operands[1], operands[2]));
  emit_move_insn (operands[0], gen_rtx_REG (SImode, MACH_REG));
})

(define_insn "umulsi3_highpart_i"
  [(set (reg:SI MACH_REG)
        (truncate:SI
         (lshiftrt:DI
          (mult:DI
           (zero_extend:DI (match_operand:SI 0 "arith_reg_operand" "r"))
           (zero_extend:DI (match_operand:SI 1 "arith_reg_operand" "r")))
          (const_int 32))))
   (clobber (reg:SI MACL_REG))]
  "TARGET_SH2"
  "dmulu.l      %1,%0"
  [(set_attr "type" "dmpy")])

(define_insn_and_split "umulsi3_highpart"
  [(set (match_operand:SI 0 "arith_reg_dest")
        (truncate:SI
          (lshiftrt:DI
            (mult:DI
              (zero_extend:DI (match_operand:SI 1 "arith_reg_operand"))
              (zero_extend:DI (match_operand:SI 2 "arith_reg_operand")))
          (const_int 32))))
   (clobber (reg:SI MACL_REG))]
  "TARGET_SH2 && can_create_pseudo_p ()"
  "#"
  "&& 1"
  [(const_int 0)]
{
  emit_insn (gen_umulsi3_highpart_i (operands[1], operands[2]));
  emit_move_insn (operands[0], gen_rtx_REG (SImode, MACH_REG));
})

;; -------------------------------------------------------------------------
;; Logical operations
;; -------------------------------------------------------------------------

(define_expand "andsi3"
  [(set (match_operand:SI 0 "arith_reg_dest")
        (and:SI (match_operand:SI 1 "arith_reg_operand")
                (match_operand:SI 2 "logical_and_operand")))]
  ""
{
  /* If it is possible to turn the and insn into a zero extension
     already, redundant zero extensions will be folded, which results
     in better code.
     Ideally the splitter of *andsi_compact would be enough, if redundant
     zero extensions were detected after the combine pass, which does not
     happen at the moment.  */

  if (satisfies_constraint_Jmb (operands[2]))
    {
      emit_insn (gen_zero_extendqisi2 (operands[0],
                                        gen_lowpart (QImode, operands[1])));
      DONE;
    }
  else if (satisfies_constraint_Jmw (operands[2]))
    {
      emit_insn (gen_zero_extendhisi2 (operands[0],
                                       gen_lowpart (HImode, operands[1])));
      DONE;
    }
})

(define_insn_and_split "*andsi_compact"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r,r,z,r")
        (and:SI (match_operand:SI 1 "arith_reg_operand" "%r,r,0,0")
                (match_operand:SI 2 "logical_and_operand" "Jmb,Jmw,K08,r")))]
  "TARGET_SH1"
  "@
        extu.b  %1,%0
        extu.w  %1,%0
        and     %2,%0
        and     %2,%0"
  "&& 1"
 [(set (match_dup 0) (zero_extend:SI (match_dup 1)))]
{
  if (satisfies_constraint_Jmb (operands[2]))
    operands[1] = gen_lowpart (QImode, operands[1]);
  else if (satisfies_constraint_Jmw (operands[2]))
    operands[1] = gen_lowpart (HImode, operands[1]);
  else
    FAIL;
}
  [(set_attr "type" "arith")])

(define_insn "*andsi3_bclr"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r")
        (and:SI (match_operand:SI 1 "arith_reg_operand" "%0")
                (match_operand:SI 2 "const_int_operand" "Psz")))]
  "TARGET_SH2A && satisfies_constraint_Psz (operands[2])"
  "bclr %W2,%0"
  [(set_attr "type" "arith")])

(define_expand "iorsi3"
  [(set (match_operand:SI 0 "arith_reg_dest")
        (ior:SI (match_operand:SI 1 "arith_reg_operand")
                (match_operand:SI 2 "logical_operand")))])

(define_insn "*iorsi3_compact"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r,z")
        (ior:SI (match_operand:SI 1 "arith_reg_operand" "%0,0")
                (match_operand:SI 2 "logical_operand" "r,K08")))]
  "TARGET_SH1
   && !(TARGET_SH2A && satisfies_constraint_Pso (operands[2]))"
  "or   %2,%0"
  [(set_attr "type" "arith")])

(define_insn "*iorsi3_bset"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r")
        (ior:SI (match_operand:SI 1 "arith_reg_operand" "%0")
        (match_operand:SI 2 "const_int_operand" "Pso")))]
  "TARGET_SH2A && satisfies_constraint_Pso (operands[2])"
  "bset %V2,%0"
  [(set_attr "type" "arith")])

(define_insn "xorsi3"
  [(set (match_operand:SI 0 "arith_reg_dest" "=z,r")
        (xor:SI (match_operand:SI 1 "arith_reg_operand" "%0,0")
                (match_operand:SI 2 "logical_operand" "K08,r")))]
  "TARGET_SH1"
  "xor  %2,%0"
  [(set_attr "type" "arith")])

;; The *logical_op_t pattern helps combine eliminating sign/zero extensions
;; of results where one of the inputs is a T bit store.  Notice that this
;; pattern must not match during reload.  If reload picks this pattern it
;; will be impossible to split it afterwards.
(define_insn_and_split "*logical_op_t"
  [(set (match_operand:SI 0 "arith_reg_dest")
        (match_operator:SI 3 "logical_operator"
          [(match_operand:SI 1 "arith_reg_operand")
           (match_operand:SI 2 "t_reg_operand")]))]
  "TARGET_SH1 && can_create_pseudo_p ()"
  "#"
  "&& 1"
  [(set (match_dup 4) (reg:SI T_REG))
   (set (match_dup 0) (match_dup 3))]
{
  operands[4] = gen_reg_rtx (SImode);
  operands[3] = gen_rtx_fmt_ee (GET_CODE (operands[3]), SImode,
                                operands[1], operands[4]);
})

;; -------------------------------------------------------------------------
;; Shifts and rotates
;; -------------------------------------------------------------------------

;; Let combine see that we can get the MSB and LSB into the T bit
;; via shll and shlr.  This allows it to plug it into insns that can have
;; the T bit as an input (e.g. addc).
;; On SH2A use bld #0,Rn instead of shlr to avoid mutating the input.
(define_insn_and_split "*reg_lsb_t"
  [(set (reg:SI T_REG)
        (and:SI (match_operand:SI 0 "arith_reg_operand")
                (const_int 1)))]
  "TARGET_SH1 && can_create_pseudo_p ()"
  "#"
  "&& 1"
  [(const_int 0)]
{
  emit_insn (TARGET_SH2A ? gen_bldsi_reg (operands[0], const0_rtx)
                         : gen_shlr (gen_reg_rtx (SImode), operands[0]));
})

(define_insn_and_split "*reg_msb_t"
  [(set (reg:SI T_REG)
        (lshiftrt:SI (match_operand:SI 0 "arith_reg_operand")
                     (const_int 31)))]
  "TARGET_SH1 && can_create_pseudo_p ()"
  "#"
  "&& 1"
  [(const_int 0)]
{
  emit_insn (gen_shll (gen_reg_rtx (SImode), operands[0]));
})

(define_expand "rotrsi3"
  [(set (match_operand:SI 0 "arith_reg_dest")
        (rotatert:SI (match_operand:SI 1 "arith_reg_operand")
                     (match_operand:SI 2 "const_int_operand")))]
  "TARGET_SH1"
{
  HOST_WIDE_INT ival = INTVAL (operands[2]);
  if (ival == 1)
    {
      emit_insn (gen_rotrsi3_1 (operands[0], operands[1]));
      DONE;
    }

  FAIL;
})

(define_insn "rotrsi3_1"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r")
        (rotatert:SI (match_operand:SI 1 "arith_reg_operand" "0")
                     (const_int 1)))
   (set (reg:SI T_REG)
        (and:SI (match_dup 1) (const_int 1)))]
  "TARGET_SH1"
  "rotr %0"
  [(set_attr "type" "arith")])

;; A slimplified version of rotr for combine.
(define_insn "*rotrsi3_1"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r")
        (rotatert:SI (match_operand:SI 1 "arith_reg_operand" "0")
                     (const_int 1)))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1"
  "rotr %0"
  [(set_attr "type" "arith")])

(define_insn "rotlsi3_1"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r")
        (rotate:SI (match_operand:SI 1 "arith_reg_operand" "0")
                   (const_int 1)))
   (set (reg:SI T_REG)
        (lshiftrt:SI (match_dup 1) (const_int 31)))]
  "TARGET_SH1"
  "rotl %0"
  [(set_attr "type" "arith")])

;; A simplified version of rotl for combine.
(define_insn "*rotlsi3_1"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r")
        (rotate:SI (match_operand:SI 1 "arith_reg_operand" "0")
                   (const_int 1)))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1"
  "rotl %0"
  [(set_attr "type" "arith")])

(define_insn "rotlsi3_31"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r")
        (rotate:SI (match_operand:SI 1 "arith_reg_operand" "0")
                   (const_int 31)))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1"
  "rotr %0"
  [(set_attr "type" "arith")])

(define_insn "rotlsi3_16"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r")
        (rotate:SI (match_operand:SI 1 "arith_reg_operand" "r")
                   (const_int 16)))]
  "TARGET_SH1"
  "swap.w       %1,%0"
  [(set_attr "type" "arith")])

(define_expand "rotlsi3"
  [(set (match_operand:SI 0 "arith_reg_dest")
        (rotate:SI (match_operand:SI 1 "arith_reg_operand")
                   (match_operand:SI 2 "const_int_operand")))]
  "TARGET_SH1"
{
  static const char rot_tab[] = {
    000, 000, 000, 000, 000, 000, 010, 001,
    001, 001, 011, 013, 003, 003, 003, 003,
    003, 003, 003, 003, 003, 013, 012, 002,
    002, 002, 010, 000, 000, 000, 000, 000,
  };

  int count = INTVAL (operands[2]);
  int choice = rot_tab[count];
  if (choice & 010 && SH_DYNAMIC_SHIFT_COST <= 1)
    FAIL;
  choice &= 7;
  switch (choice)
    {
    case 0:
      emit_move_insn (operands[0], operands[1]);
      count -= (count & 16) * 2;
      break;
    case 3:
     emit_insn (gen_rotlsi3_16 (operands[0], operands[1]));
     count -= 16;
     break;
    case 1:
    case 2:
      {
        rtx parts[2];
        parts[0] = gen_reg_rtx (SImode);
        parts[1] = gen_reg_rtx (SImode);
        emit_insn (gen_rotlsi3_16 (parts[2-choice], operands[1]));
        emit_move_insn (parts[choice-1], operands[1]);
        emit_insn (gen_ashlsi3 (parts[0], parts[0], GEN_INT (8)));
        emit_insn (gen_lshrsi3 (parts[1], parts[1], GEN_INT (8)));
        emit_insn (gen_iorsi3 (operands[0], parts[0], parts[1]));
        count = (count & ~16) - 8;
      }
    }

  for (; count > 0; count--)
    emit_insn (gen_rotlsi3_1 (operands[0], operands[0]));
  for (; count < 0; count++)
    emit_insn (gen_rotlsi3_31 (operands[0], operands[0]));

  DONE;
})

(define_insn "rotlhi3_8"
  [(set (match_operand:HI 0 "arith_reg_dest" "=r")
        (rotate:HI (match_operand:HI 1 "arith_reg_operand" "r")
                   (const_int 8)))]
  "TARGET_SH1"
  "swap.b       %1,%0"
  [(set_attr "type" "arith")])

(define_expand "rotlhi3"
  [(set (match_operand:HI 0 "arith_reg_operand")
        (rotate:HI (match_operand:HI 1 "arith_reg_operand")
                   (match_operand:HI 2 "const_int_operand")))]
  "TARGET_SH1"
{
  if (INTVAL (operands[2]) != 8)
    FAIL;
})

;; The rotcr and rotcl insns are used primarily in DImode shifts by one.
;; They can also be used to implement things like
;;      bool t = a == b;
;;      int x0 = (y >> 1) | (t << 31);  // rotcr
;;      int x1 = (y << 1) | t;          // rotcl
(define_insn "rotcr"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r")
        (ior:SI (lshiftrt:SI (match_operand:SI 1 "arith_reg_operand" "0")
                             (const_int 1))
                (ashift:SI (match_operand:SI 2 "t_reg_operand")
                           (const_int 31))))
   (set (reg:SI T_REG)
        (and:SI (match_dup 1) (const_int 1)))]
  "TARGET_SH1"
  "rotcr        %0"
  [(set_attr "type" "arith")])

(define_insn "rotcl"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r")
        (ior:SI (ashift:SI (match_operand:SI 1 "arith_reg_operand" "0")
                           (const_int 1))
                (match_operand:SI 2 "t_reg_operand")))
   (set (reg:SI T_REG)
        (lshiftrt:SI (match_dup 1) (const_int 31)))]
  "TARGET_SH1"
  "rotcl        %0"
  [(set_attr "type" "arith")])

;; Simplified rotcr version for combine, which allows arbitrary shift
;; amounts for the reg.  If the shift amount is '1' rotcr can be used
;; directly.  Otherwise we have to insert a shift in between.
(define_insn_and_split "*rotcr"
  [(set (match_operand:SI 0 "arith_reg_dest")
        (ior:SI (lshiftrt:SI (match_operand:SI 1 "arith_reg_or_0_operand")
                             (match_operand:SI 2 "const_int_operand"))
                (ashift:SI (match_operand 3 "arith_reg_or_treg_set_expr")
                           (const_int 31))))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1 && can_create_pseudo_p ()"
  "#"
  "&& 1"
  [(const_int 0)]
{
  rtx_insn *prev_set_t_insn = NULL;

  if (!arith_reg_operand (operands[3], SImode))
    {
      sh_treg_insns ti = sh_split_treg_set_expr (operands[3], curr_insn);
      if (!ti.was_treg_operand ())
        prev_set_t_insn = ti.first_insn ();

      operands[3] = get_t_reg_rtx ();

      if (TARGET_SH2A && ti.has_trailing_nott () && operands[1] == const0_rtx)
        {
          /* Convert to a movrt, rotr sequence.  */
          remove_insn (ti.trailing_nott ());
          rtx tmp = gen_reg_rtx (SImode);
          emit_insn (gen_movnegt (tmp, get_t_reg_rtx ()));
          emit_insn (gen_rotrsi3_1 (operands[0], tmp));
          DONE;
        }
    }

  if (operands[1] == const0_rtx)
    {
      operands[1] = gen_reg_rtx (SImode);
      emit_insn (gen_movt (operands[1], get_t_reg_rtx ()));
    }

  if (INTVAL (operands[2]) > 1)
    {
      const rtx shift_count = GEN_INT (INTVAL (operands[2]) - 1);
      rtx tmp_t_reg = NULL_RTX;

      /* If we're going to emit a shift sequence that clobbers the T_REG,
         try to find the previous insn that sets the T_REG and emit the 
         shift insn before that insn, to remove the T_REG dependency.
         If the insn that sets the T_REG cannot be found, store the T_REG
         in a temporary reg and restore it after the shift.  */
      if (sh_lshrsi_clobbers_t_reg_p (shift_count)
          && ! sh_dynamicalize_shift_p (shift_count))
        {
          if (prev_set_t_insn == NULL)
            prev_set_t_insn = prev_nonnote_insn_bb (curr_insn);

          /* Skip the nott insn, which was probably inserted by the splitter
             of *rotcr_neg_t.  Don't use one of the recog functions
             here during insn splitting, since that causes problems in later
             passes.  */
          if (prev_set_t_insn != NULL_RTX)
            {
              rtx pat = PATTERN (prev_set_t_insn);
              if (GET_CODE (pat) == SET
                  && t_reg_operand (XEXP (pat, 0), SImode)
                  && negt_reg_operand (XEXP (pat, 1), SImode))
              prev_set_t_insn = prev_nonnote_insn_bb (prev_set_t_insn);
            }

          if (! (prev_set_t_insn != NULL_RTX
                 && reg_set_p (get_t_reg_rtx (), prev_set_t_insn)
                 && ! reg_referenced_p (get_t_reg_rtx (),
                                        PATTERN (prev_set_t_insn))))
            {
              prev_set_t_insn = NULL;
              tmp_t_reg = gen_reg_rtx (SImode);
              emit_insn (gen_move_insn (tmp_t_reg, get_t_reg_rtx ()));
            } 
        }

      rtx shift_result = gen_reg_rtx (SImode);
      rtx shift_insn = gen_lshrsi3 (shift_result, operands[1], shift_count);
      operands[1] = shift_result;

      /* Emit the shift insn before the insn that sets T_REG, if possible.  */
      if (prev_set_t_insn != NULL_RTX)
        emit_insn_before (shift_insn, prev_set_t_insn);
      else
        emit_insn (shift_insn);

      /* Restore T_REG if it has been saved before.  */
      if (tmp_t_reg != NULL_RTX)
        emit_insn (gen_cmpgtsi_t (tmp_t_reg, const0_rtx));
    }

  /* For the rotcr insn to work, operands[3] must be in T_REG.
     If it is not we can get it there by shifting it right one bit.
     In this case T_REG is not an input for this insn, thus we don't have to
     pay attention as of where to insert the shlr insn.  */
  if (! t_reg_operand (operands[3], SImode))
    {
      /* We don't care about the shifted result here, only the T_REG.  */
      emit_insn (gen_shlr (gen_reg_rtx (SImode), operands[3]));
      operands[3] = get_t_reg_rtx ();
    }

  emit_insn (gen_rotcr (operands[0], operands[1], operands[3]));
  DONE;
})

;; If combine tries the same as above but with swapped operands, split
;; it so that it will try the pattern above.
(define_split
  [(set (match_operand:SI 0 "arith_reg_dest")
        (ior:SI (ashift:SI (match_operand 1 "arith_reg_or_treg_set_expr")
                           (const_int 31))
                (lshiftrt:SI (match_operand:SI 2 "arith_reg_or_0_operand")
                             (match_operand:SI 3 "const_int_operand"))))]
  "TARGET_SH1 && can_create_pseudo_p ()"
  [(parallel [(set (match_dup 0)
                   (ior:SI (lshiftrt:SI (match_dup 2) (match_dup 3))
                           (ashift:SI (match_dup 1) (const_int 31))))
              (clobber (reg:SI T_REG))])])

;; Basically the same as the rotcr pattern above, but for rotcl.
;; FIXME: Fold copy pasted split code for rotcr and rotcl.
(define_insn_and_split "*rotcl"
  [(set (match_operand:SI 0 "arith_reg_dest")
        (ior:SI (ashift:SI (match_operand:SI 1 "arith_reg_operand")
                           (match_operand:SI 2 "const_int_operand"))
                (and:SI (match_operand:SI 3 "arith_reg_or_t_reg_operand")
                        (const_int 1))))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1"
  "#"
  "&& can_create_pseudo_p ()"
  [(const_int 0)]
{
  gcc_assert (INTVAL (operands[2]) > 0);

  if (INTVAL (operands[2]) > 1)
    {
      const rtx shift_count = GEN_INT (INTVAL (operands[2]) - 1);
      rtx_insn *prev_set_t_insn = NULL;
      rtx tmp_t_reg = NULL_RTX;

      /* If we're going to emit a shift sequence that clobbers the T_REG,
         try to find the previous insn that sets the T_REG and emit the 
         shift insn before that insn, to remove the T_REG dependency.
         If the insn that sets the T_REG cannot be found, store the T_REG
         in a temporary reg and restore it after the shift.  */
      if (sh_ashlsi_clobbers_t_reg_p (shift_count)
          && ! sh_dynamicalize_shift_p (shift_count))
        {
          prev_set_t_insn = prev_nonnote_insn_bb (curr_insn);

          /* Skip the nott insn, which was probably inserted by the splitter
             of *rotcl_neg_t.  Don't use one of the recog functions
             here during insn splitting, since that causes problems in later
             passes.  */
          if (prev_set_t_insn != NULL_RTX)
            {
              rtx pat = PATTERN (prev_set_t_insn);
              if (GET_CODE (pat) == SET
                  && t_reg_operand (XEXP (pat, 0), SImode)
                  && negt_reg_operand (XEXP (pat, 1), SImode))
              prev_set_t_insn = prev_nonnote_insn_bb (prev_set_t_insn);
            }

          if (! (prev_set_t_insn != NULL_RTX
                 && reg_set_p (get_t_reg_rtx (), prev_set_t_insn)
                 && ! reg_referenced_p (get_t_reg_rtx (),
                                        PATTERN (prev_set_t_insn))))
            {
              prev_set_t_insn = NULL;
              tmp_t_reg = gen_reg_rtx (SImode);
              emit_insn (gen_move_insn (tmp_t_reg, get_t_reg_rtx ()));
            } 
        }

      rtx shift_result = gen_reg_rtx (SImode);
      rtx shift_insn = gen_ashlsi3 (shift_result, operands[1], shift_count);
      operands[1] = shift_result;

      /* Emit the shift insn before the insn that sets T_REG, if possible.  */
      if (prev_set_t_insn != NULL_RTX)
        emit_insn_before (shift_insn, prev_set_t_insn);
      else
        emit_insn (shift_insn);

      /* Restore T_REG if it has been saved before.  */
      if (tmp_t_reg != NULL_RTX)
        emit_insn (gen_cmpgtsi_t (tmp_t_reg, const0_rtx));
    }

  /* For the rotcl insn to work, operands[3] must be in T_REG.
     If it is not we can get it there by shifting it right one bit.
     In this case T_REG is not an input for this insn, thus we don't have to
     pay attention as of where to insert the shlr insn.  */
  if (! t_reg_operand (operands[3], SImode))
    {
      /* We don't care about the shifted result here, only the T_REG.  */
      emit_insn (gen_shlr (gen_reg_rtx (SImode), operands[3]));
      operands[3] = get_t_reg_rtx ();
    }

  emit_insn (gen_rotcl (operands[0], operands[1], operands[3]));
  DONE;
})

;; rotcl combine pattern variations
(define_insn_and_split "*rotcl"
  [(set (match_operand:SI 0 "arith_reg_dest")
        (ior:SI (ashift:SI (match_operand:SI 1 "arith_reg_operand")
                           (match_operand:SI 2 "const_int_operand"))
                (match_operand 3 "treg_set_expr")))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1"
  "#"
  "&& can_create_pseudo_p ()"
  [(parallel [(set (match_dup 0)
                   (ior:SI (ashift:SI (match_dup 1) (match_dup 2))
                           (and:SI (match_dup 3) (const_int 1))))
              (clobber (reg:SI T_REG))])]
{
  sh_split_treg_set_expr (operands[3], curr_insn);
  operands[3] = get_t_reg_rtx ();
})

(define_insn_and_split "*rotcl"
  [(set (match_operand:SI 0 "arith_reg_dest")
        (ior:SI (and:SI (match_operand:SI 1 "arith_reg_or_t_reg_operand")
                        (const_int 1))
                (ashift:SI (match_operand:SI 2 "arith_reg_operand")
                           (match_operand:SI 3 "const_int_operand"))))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1"
  "#"
  "&& can_create_pseudo_p ()"
  [(parallel [(set (match_dup 0)
                   (ior:SI (ashift:SI (match_dup 2) (match_dup 3))
                           (and:SI (match_dup 1) (const_int 1))))
              (clobber (reg:SI T_REG))])])

(define_insn_and_split "*rotcl"
  [(set (match_operand:SI 0 "arith_reg_dest")
        (ior:SI (ashift:SI (match_operand:SI 1 "arith_reg_operand")
                           (match_operand:SI 2 "const_int_operand"))
                (lshiftrt:SI (match_operand:SI 3 "arith_reg_operand")
                             (const_int 31))))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1"
  "#"
  "&& can_create_pseudo_p ()"
  [(parallel [(set (match_dup 0)
                   (ior:SI (ashift:SI (match_dup 1) (match_dup 2))
                           (and:SI (reg:SI T_REG) (const_int 1))))
              (clobber (reg:SI T_REG))])]
{
  /* We don't care about the result of the left shift, only the T_REG.  */
  emit_insn (gen_shll (gen_reg_rtx (SImode), operands[3]));
})

(define_insn_and_split "*rotcl"
  [(set (match_operand:SI 0 "arith_reg_dest")
        (ior:SI (lshiftrt:SI (match_operand:SI 3 "arith_reg_operand")
                             (const_int 31))
                (ashift:SI (match_operand:SI 1 "arith_reg_operand")
                           (match_operand:SI 2 "const_int_operand"))))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1"
  "#"
  "&& can_create_pseudo_p ()"
  [(parallel [(set (match_dup 0)
                   (ior:SI (ashift:SI (match_dup 1) (match_dup 2))
                           (and:SI (reg:SI T_REG) (const_int 1))))
              (clobber (reg:SI T_REG))])]
{
  /* We don't care about the result of the left shift, only the T_REG.  */
  emit_insn (gen_shll (gen_reg_rtx (SImode), operands[3]));
})

(define_insn_and_split "*rotcl"
  [(set (match_operand:SI 0 "arith_reg_dest")
        (ior:SI (ashift:SI (match_operand:SI 1 "arith_reg_operand")
                           (match_operand 2 "const_int_operand"))
                (zero_extract:SI (match_operand:SI 3 "arith_reg_operand")
                                 (const_int 1)
                                 (match_operand 4 "const_int_operand"))))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1"
  "#"
  "&& can_create_pseudo_p ()"
  [(parallel [(set (match_dup 0)
                   (ior:SI (ashift:SI (match_dup 1) (match_dup 2))
                           (and:SI (match_dup 5) (const_int 1))))
              (clobber (reg:SI T_REG))])]
{
  if (TARGET_SH2A && satisfies_constraint_K03 (operands[4]))
    {
      /* On SH2A we can use the bld insn to zero extract a single bit
         into the T bit.  */
      operands[5] = get_t_reg_rtx ();
      emit_insn (gen_bldsi_reg (operands[3], operands[4]));
    }
  else
    {
      /* If we can't use the bld insn we have to emit a tst + nott sequence
         to get the extracted bit into the T bit.
         This will probably be worse than pre-shifting the operand.  */
      operands[5] = gen_reg_rtx (SImode);
      emit_insn (gen_lshrsi3 (operands[5], operands[3], operands[4]));
    }
})

;; rotcr combine bridge pattern which will make combine try out more
;; complex patterns.
(define_insn_and_split "*rotcr"
  [(set (match_operand:SI 0 "arith_reg_dest")
        (ashift:SI (match_operand 1 "treg_set_expr") (const_int 31)))]
  "TARGET_SH1 && can_create_pseudo_p ()"
  "#"
  "&& 1"
  [(parallel [(set (match_dup 0)
                   (ior:SI (lshiftrt:SI (const_int 0) (const_int 1))
                           (ashift:SI (match_dup 1) (const_int 31))))
              (clobber (reg:SI T_REG))])])

(define_insn_and_split "*rotcr"
  [(set (match_operand:SI 0 "arith_reg_dest")
        (ior:SI (and:SI (match_operand:SI 1 "arith_reg_operand")
                        (const_int -2147483648)) ;; 0xffffffff80000000
                (lshiftrt:SI (match_operand:SI 2 "arith_reg_operand")
                             (const_int 1))))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1"
  "#"
  "&& can_create_pseudo_p ()"
  [(const_int 0)]
{
  rtx tmp = gen_reg_rtx (SImode);
  emit_insn (gen_shll (tmp, operands[1]));
  emit_insn (gen_rotcr (operands[0], operands[2], get_t_reg_rtx ()));
  DONE;
})

(define_insn_and_split "*rotcr"
  [(set (match_operand:SI 0 "arith_reg_dest")
        (ior:SI (lshiftrt:SI (match_operand:SI 1 "arith_reg_operand")
                             (const_int 1))
                (const_int -2147483648))) ;; 0xffffffff80000000
   (clobber (reg:SI T_REG))]
  "TARGET_SH1"
  "#"
  "&& can_create_pseudo_p ()"
  [(const_int 0)]
{
  emit_insn (gen_sett ());
  emit_insn (gen_rotcr (operands[0], operands[1], get_t_reg_rtx ()));
  DONE;
})

;; rotcr combine patterns for rotating in the negated T_REG value.
(define_insn_and_split "*rotcr_neg_t"
  [(set (match_operand:SI 0 "arith_reg_dest")
        (ior:SI (match_operand:SI 1 "negt_reg_shl31_operand")
                (lshiftrt:SI (match_operand:SI 2 "arith_reg_operand")
                             (match_operand:SI 3 "const_int_operand"))))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1"
  "#"
  "&& can_create_pseudo_p ()"
  [(parallel [(set (match_dup 0)
                   (ior:SI (lshiftrt:SI (match_dup 2) (match_dup 3))
                           (ashift:SI (reg:SI T_REG) (const_int 31))))
              (clobber (reg:SI T_REG))])]
{
  emit_insn (gen_nott (get_t_reg_rtx ()));
})

(define_insn_and_split "*rotcr_neg_t"
  [(set (match_operand:SI 0 "arith_reg_dest")
        (ior:SI (lshiftrt:SI (match_operand:SI 1 "arith_reg_operand")
                             (match_operand:SI 2 "const_int_operand"))
                (match_operand:SI 3 "negt_reg_shl31_operand")))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1"
  "#"
  "&& can_create_pseudo_p ()"
  [(parallel [(set (match_dup 0)
                   (ior:SI (lshiftrt:SI (match_dup 1) (match_dup 2))
                           (ashift:SI (reg:SI T_REG) (const_int 31))))
              (clobber (reg:SI T_REG))])]
{
  emit_insn (gen_nott (get_t_reg_rtx ()));
})

;; rotcl combine patterns for rotating in the negated T_REG value.
;; For some strange reason these have to be specified as splits which combine
;; will pick up.  If they are specified as insn_and_split like the
;; *rotcr_neg_t patterns above, combine would recognize them successfully
;; but not emit them on non-SH2A targets.
(define_split
  [(set (match_operand:SI 0 "arith_reg_dest")
        (ior:SI (match_operand:SI 1 "negt_reg_operand")
                (ashift:SI (match_operand:SI 2 "arith_reg_operand")
                           (match_operand:SI 3 "const_int_operand"))))]
  "TARGET_SH1"
  [(set (reg:SI T_REG) (xor:SI (reg:SI T_REG) (const_int 1)))
   (parallel [(set (match_dup 0)
                   (ior:SI (ashift:SI (match_dup 2) (match_dup 3))
                           (and:SI (reg:SI T_REG) (const_int 1))))
              (clobber (reg:SI T_REG))])])

(define_split
  [(set (match_operand:SI 0 "arith_reg_dest")
        (ior:SI (ashift:SI (match_operand:SI 2 "arith_reg_operand")
                           (match_operand:SI 3 "const_int_operand"))
                (match_operand:SI 1 "negt_reg_operand")))]
  "TARGET_SH1"
  [(set (reg:SI T_REG) (xor:SI (reg:SI T_REG) (const_int 1)))
   (parallel [(set (match_dup 0)
                   (ior:SI (ashift:SI (match_dup 2) (match_dup 3))
                           (and:SI (reg:SI T_REG) (const_int 1))))
              (clobber (reg:SI T_REG))])])

;; . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
;; SImode shift left

(define_expand "ashlsi3"
  [(set (match_operand:SI 0 "arith_reg_operand" "")
        (ashift:SI (match_operand:SI 1 "arith_reg_operand" "")
                   (match_operand:SI 2 "shift_count_operand" "")))]
  ""
{
  if (TARGET_DYNSHIFT
      && CONST_INT_P (operands[2]) && sh_dynamicalize_shift_p (operands[2]))
    {
      /* Don't force the constant into a reg yet.  Some other optimizations
         might not see through the reg that holds the shift count.  */
    }

  /*  If the ashlsi3_* insn is going to clobber the T_REG it must be
      expanded here.  */
  if (CONST_INT_P (operands[2])
      && sh_ashlsi_clobbers_t_reg_p (operands[2])
      && ! sh_dynamicalize_shift_p (operands[2]))
    {
      emit_insn (gen_ashlsi3_n_clobbers_t (operands[0], operands[1],
                                           operands[2]));
      DONE;
    }

  /* Expand a library call for the dynamic shift.  */
  if (!CONST_INT_P (operands[2]) && !TARGET_DYNSHIFT)
    {
      emit_move_insn (gen_rtx_REG (SImode, R4_REG), operands[1]);
      rtx funcaddr = gen_reg_rtx (Pmode);
      rtx lab = function_symbol (funcaddr, "__ashlsi3_r0", SFUNC_STATIC).lab;
      emit_insn (gen_ashlsi3_d_call (operands[0], operands[2], funcaddr, lab));

      DONE;
    }
})

(define_insn "ashlsi3_k"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r,r")
        (ashift:SI (match_operand:SI 1 "arith_reg_operand" "0,0")
                   (match_operand:SI 2 "p27_shift_count_operand" "M,P27")))]
  "TARGET_SH1"
  "@
        add     %0,%0
        shll%O2 %0"
  [(set_attr "type" "arith")])

(define_insn_and_split "ashlsi3_d"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r")
        (ashift:SI (match_operand:SI 1 "arith_reg_operand" "0")
                   (match_operand:SI 2 "shift_count_operand" "r")))]
  "TARGET_DYNSHIFT"
  "shld %2,%0"
  "&& CONST_INT_P (operands[2]) && ! sh_dynamicalize_shift_p (operands[2])
   && ! sh_ashlsi_clobbers_t_reg_p (operands[2])"
  [(const_int 0)]
{
  if (satisfies_constraint_P27 (operands[2]))
    {
      emit_insn (gen_ashlsi3_k (operands[0], operands[1], operands[2]));
      DONE;
    }
  else if (! satisfies_constraint_P27 (operands[2]))
    {
      /* This must happen before reload, otherwise the constant will be moved
         into a register due to the "r" constraint, after which this split
         cannot be done anymore.
         Unfortunately the move insn will not always be eliminated.
         Also, here we must not create a shift sequence that clobbers the
         T_REG.  */
      emit_move_insn (operands[0], operands[1]);
      gen_shifty_op (ASHIFT, operands);
      DONE;
    }

  FAIL;
}
  [(set_attr "type" "dyn_shift")])

;; If dynamic shifts are not available use a library function.
;; By specifying the pattern we reduce the number of call clobbered regs.
;; In order to make combine understand the truncation of the shift amount
;; operand we have to allow it to use pseudo regs for the shift operands.
(define_insn "ashlsi3_d_call"
  [(set (match_operand:SI 0 "arith_reg_dest" "=z,z")
        (ashift:SI (reg:SI R4_REG)
                   (and:SI (match_operand:SI 1 "arith_reg_operand" "z,z")
                           (const_int 31))))
   (use (match_operand:SI 2 "arith_reg_operand" "r,r"))
   (use (match_operand 3 "" "Z,Ccl"))
   (clobber (reg:SI T_REG))
   (clobber (reg:SI PR_REG))]
  "TARGET_SH1 && !TARGET_DYNSHIFT"
  "@
        jsr     @%2%#
        bsrf    %2\n%O3:%#"
  [(set_attr "type" "sfunc")
   (set_attr "needs_delay_slot" "yes")])

(define_insn_and_split "ashlsi3_n"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r")
        (ashift:SI (match_operand:SI 1 "arith_reg_operand" "0")
                   (match_operand:SI 2 "not_p27_shift_count_operand" "")))]
  "TARGET_SH1 && ! sh_ashlsi_clobbers_t_reg_p (operands[2])"
  "#"
  "&& (reload_completed
       || (sh_dynamicalize_shift_p (operands[2]) && can_create_pseudo_p ()))"
  [(const_int 0)]
{
  if (sh_dynamicalize_shift_p (operands[2]) && can_create_pseudo_p ())
    {
      /* If this pattern was picked and dynamic shifts are supported, switch
         to dynamic shift pattern before reload.  */
      operands[2] = force_reg (SImode, operands[2]);
      emit_insn (gen_ashlsi3_d (operands[0], operands[1], operands[2]));
    }
  else
    gen_shifty_op (ASHIFT, operands);

  DONE;
})

(define_insn_and_split "ashlsi3_n_clobbers_t"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r")
        (ashift:SI (match_operand:SI 1 "arith_reg_operand" "0")
                   (match_operand:SI 2 "not_p27_shift_count_operand" "")))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1 && sh_ashlsi_clobbers_t_reg_p (operands[2])"
  "#"
  "&& (reload_completed || INTVAL (operands[2]) == 31
       || (sh_dynamicalize_shift_p (operands[2]) && can_create_pseudo_p ()))"
  [(const_int 0)]
{
  if (INTVAL (operands[2]) == 31)
    {
      /* If the shift amount is 31 we split into a different sequence before
         reload so that it gets a chance to allocate R0 for the sequence.
         If it fails to do so (due to pressure on R0), it will take one insn
         more for the and.  */
      emit_insn (gen_andsi3 (operands[0], operands[1], const1_rtx));
      emit_insn (gen_rotlsi3_31 (operands[0], operands[0]));
    }
  else if (sh_dynamicalize_shift_p (operands[2]) && can_create_pseudo_p ())
    {
      /* If this pattern was picked and dynamic shifts are supported, switch
         to dynamic shift pattern before reload.  */
      operands[2] = force_reg (SImode, operands[2]);
      emit_insn (gen_ashlsi3_d (operands[0], operands[1], operands[2]));
    }
  else
    gen_shifty_op (ASHIFT, operands);

  DONE;
})

(define_insn "shll"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r")
        (ashift:SI (match_operand:SI 1 "arith_reg_operand" "0") (const_int 1)))
   (set (reg:SI T_REG)
        (lt:SI (match_dup 1) (const_int 0)))]
  "TARGET_SH1"
  "shll %0"
  [(set_attr "type" "arith")])

(define_insn "*ashlsi_c_void"
  [(set (reg:SI T_REG)
        (lt:SI (match_operand:SI 0 "arith_reg_operand" "r") (const_int 0)))
   (clobber (match_scratch:SI 1 "=0"))]
  "TARGET_SH1 && cse_not_expected"
  "shll %0"
  [(set_attr "type" "arith")])

(define_peephole2
  [(set (match_operand:SI 0 "arith_reg_dest" "") (const_int 0))
   (set (reg:SI T_REG)
        (gt:SI (match_dup 0) (match_operand:SI 1 "arith_reg_operand" "")))]
  "TARGET_SH1
   && peep2_reg_dead_p (2, operands[0])
   && peep2_reg_dead_p (2, operands[1])"
  [(const_int 0)]
{
  emit_insn (gen_shll (operands[1], operands[1]));
  DONE;
})

;; . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
;; HImode shift left

(define_expand "ashlhi3"
  [(parallel [(set (match_operand:HI 0 "arith_reg_operand" "")
                   (ashift:HI (match_operand:HI 1 "arith_reg_operand" "")
                              (match_operand:SI 2 "nonmemory_operand" "")))
              (clobber (reg:SI T_REG))])]
  "TARGET_SH1"
{
  if (!CONST_INT_P (operands[2]))
    FAIL;
  /* It may be possible to call gen_ashlhi3 directly with more generic
     operands.  Make sure operands[1] is a HImode register here.  */
  if (!arith_reg_operand (operands[1], HImode))
    operands[1] = copy_to_mode_reg (HImode, operands[1]);
})

(define_insn "ashlhi3_k"
  [(set (match_operand:HI 0 "arith_reg_dest" "=r,r")
        (ashift:HI (match_operand:HI 1 "arith_reg_operand" "0,0")
                   (match_operand:HI 2 "const_int_operand" "M,P27")))]
  "TARGET_SH1 && satisfies_constraint_P27 (operands[2])"
  "@
        add     %0,%0
        shll%O2 %0"
  [(set_attr "type" "arith")])

(define_insn_and_split "*ashlhi3_n"
  [(set (match_operand:HI 0 "arith_reg_dest" "=r")
        (ashift:HI (match_operand:HI 1 "arith_reg_operand" "0")
                   (match_operand:HI 2 "const_int_operand" "n")))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1"
  "#"
  "&& reload_completed"
  [(use (reg:SI R0_REG))]
{
  gen_shifty_hi_op (ASHIFT, operands);
  DONE;
})

;; . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
;; DImode shift left

(define_expand "ashldi3"
  [(parallel [(set (match_operand:DI 0 "arith_reg_operand" "")
                   (ashift:DI (match_operand:DI 1 "arith_reg_operand" "")
                              (match_operand:DI 2 "immediate_operand" "")))
              (clobber (reg:SI T_REG))])]
  ""
{
  if (CONST_INT_P (operands[2]) && INTVAL (operands[2]) == 1)
    {
      emit_insn (gen_ashldi3_k (operands[0], operands[1]));
      DONE;
    }
  else if (CONST_INT_P (operands[2]) && INTVAL (operands[2]) < 32)
    {
      emit_insn (gen_ashldi3_std (operands[0], operands[1], operands[2]));
      DONE;
    }
  else
    FAIL;
})

;; Expander for DImode shift left with SImode operations.
(define_expand "ashldi3_std"
  [(set (match_operand:DI 0 "arith_reg_dest" "=r")
        (ashift:DI (match_operand:DI 1 "arith_reg_operand" "r")
                   (match_operand:DI 2 "const_int_operand" "n")))]
  "TARGET_SH1 && INTVAL (operands[2]) < 32"
{
  rtx low_src = gen_lowpart (SImode, operands[1]);
  rtx high_src = gen_highpart (SImode, operands[1]);
  rtx dst = gen_reg_rtx (DImode);
  rtx low_dst = gen_lowpart (SImode, dst);
  rtx high_dst = gen_highpart (SImode, dst);
  rtx tmp0 = gen_reg_rtx (SImode);
  rtx tmp1 = gen_reg_rtx (SImode);

  emit_insn (gen_lshrsi3 (tmp0, low_src, GEN_INT (32 - INTVAL (operands[2]))));
  emit_insn (gen_ashlsi3 (low_dst, low_src, operands[2]));  
  emit_insn (gen_ashlsi3 (tmp1, high_src, operands[2]));  
  emit_insn (gen_iorsi3 (high_dst, tmp0, tmp1));
  emit_move_insn (operands[0], dst);
  DONE;
})

(define_insn_and_split "ashldi3_k"
  [(set (match_operand:DI 0 "arith_reg_dest" "=r")
        (ashift:DI (match_operand:DI 1 "arith_reg_operand" "0")
                   (const_int 1)))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1"
  "#"
  "&& reload_completed"
  [(const_int 0)]
{
  rtx high = gen_highpart (SImode, operands[0]);
  rtx low = gen_lowpart (SImode, operands[0]);
  emit_insn (gen_shll (low, low));
  emit_insn (gen_rotcl (high, high, get_t_reg_rtx ()));
  DONE;
})

;; . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
;; SImode arithmetic shift right
;;
;; We can't do HImode right shifts correctly unless we start out with an
;; explicit zero / sign extension; doing that would result in worse overall
;; code, so just let the machine independent code widen the mode.
;; That's why we don't have ashrhi3_k / lshrhi3_k / lshrhi3_m / lshrhi3 .

(define_expand "ashrsi3"
  [(parallel [(set (match_operand:SI 0 "arith_reg_dest" "")
                   (ashiftrt:SI (match_operand:SI 1 "arith_reg_operand" "")
                                (match_operand:SI 2 "nonmemory_operand" "")))
              (clobber (reg:SI T_REG))])]
  ""
{
  if (expand_ashiftrt (operands))
    DONE;
  else
    FAIL;
})

(define_insn "shar"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r")
        (ashiftrt:SI (match_operand:SI 1 "arith_reg_operand" "0")
                     (const_int 1)))
   (set (reg:SI T_REG)
        (and:SI (match_dup 1) (const_int 1)))]
  "TARGET_SH1"
  "shar %0"
  [(set_attr "type" "arith")])

(define_insn "ashrsi3_k"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r")
        (ashiftrt:SI (match_operand:SI 1 "arith_reg_operand" "0")
                     (match_operand:SI 2 "const_int_operand" "M")))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1 && INTVAL (operands[2]) == 1"
  "shar %0"
  [(set_attr "type" "arith")])

(define_insn_and_split "ashrsi2_16"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r")
        (ashiftrt:SI (match_operand:SI 1 "arith_reg_operand" "r")
                     (const_int 16)))]
  "TARGET_SH1"
  "#"
  "&& 1"
  [(set (match_dup 0) (rotate:SI (match_dup 1) (const_int 16)))
   (set (match_dup 0) (sign_extend:SI (match_dup 2)))]
{
  operands[2] = gen_lowpart (HImode, operands[0]);
})

(define_insn_and_split "ashrsi2_31"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r")
        (ashiftrt:SI (match_operand:SI 1 "arith_reg_operand" "0")
                     (const_int 31)))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1"
  "#"
  "&& 1"
  [(const_int 0)]
{
  emit_insn (gen_shll (operands[0], operands[1]));
  emit_insn (gen_mov_neg_si_t (operands[0], get_t_reg_rtx ()));
  DONE;
})

;; If the shift amount is changed by combine it will try to plug the
;; use on the symbol of the library function and the PR clobber.
(define_insn_and_split "*ashrsi2_31"
  [(set (match_operand:SI 0 "arith_reg_dest")
        (ashiftrt:SI (match_operand:SI 1 "arith_reg_operand")
                     (const_int 31)))
   (clobber (reg:SI T_REG))
   (clobber (reg:SI PR_REG))
   (use (match_operand:SI 2 "symbol_ref_operand"))]
  "TARGET_SH1"
  "#"
  "&& 1"
  [(parallel [(set (match_dup 0) (ashiftrt:SI (match_dup 1) (const_int 31)))
              (clobber (reg:SI T_REG))])])

(define_insn "ashrsi3_d"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r")
        (ashiftrt:SI (match_operand:SI 1 "arith_reg_operand" "0")
                     (neg:SI (match_operand:SI 2 "arith_reg_operand" "r"))))]
  "TARGET_DYNSHIFT"
  "shad %2,%0"
  [(set_attr "type" "dyn_shift")])

(define_insn "ashrsi3_n"
  [(set (reg:SI R4_REG)
        (ashiftrt:SI (reg:SI R4_REG)
                     (match_operand:SI 0 "const_int_operand" "i,i")))
   (clobber (reg:SI T_REG))
   (clobber (reg:SI PR_REG))
   (use (match_operand:SI 1 "arith_reg_operand" "r,r"))
   (use (match_operand 2 "" "Z,Ccl"))]
  "TARGET_SH1"
  "@
        jsr     @%1%#
        bsrf    %1\n%O2:%#"
  [(set_attr "type" "sfunc")
   (set_attr "needs_delay_slot" "yes")])

;; . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
;; DImode arithmetic shift right

(define_expand "ashrdi3"
  [(parallel [(set (match_operand:DI 0 "arith_reg_operand" "")
                   (ashiftrt:DI (match_operand:DI 1 "arith_reg_operand" "")
                                (match_operand:DI 2 "immediate_operand" "")))
              (clobber (reg:SI T_REG))])]
  ""
{
  if (!CONST_INT_P (operands[2]) || INTVAL (operands[2]) != 1)
    FAIL;
})

(define_insn_and_split "ashrdi3_k"
  [(set (match_operand:DI 0 "arith_reg_dest" "=r")
        (ashiftrt:DI (match_operand:DI 1 "arith_reg_operand" "0")
                     (const_int 1)))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1"
  "#"
  "&& reload_completed"
  [(const_int 0)]
{
  rtx high = gen_highpart (SImode, operands[0]);
  rtx low = gen_lowpart (SImode, operands[0]);
  emit_insn (gen_shar (high, high));
  emit_insn (gen_rotcr (low, low, get_t_reg_rtx ()));
  DONE;
})

;; . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
;; SImode logical shift right

(define_expand "lshrsi3"
  [(set (match_operand:SI 0 "arith_reg_dest" "")
        (lshiftrt:SI (match_operand:SI 1 "arith_reg_operand" "")
                     (match_operand:SI 2 "shift_count_operand" "")))]
  ""
{
  /* If a dynamic shift is supposed to be used, expand the lshrsi3_d insn
     here, otherwise the pattern will never match due to the shift amount reg
     negation.  */
  if (TARGET_DYNSHIFT
      && CONST_INT_P (operands[2]) && sh_dynamicalize_shift_p (operands[2]))
    {
      /* Don't force the constant into a reg yet.  Some other optimizations
         might not see through the reg that holds the shift count.  */
      if (sh_lshrsi_clobbers_t_reg_p (operands[2]))
        emit_insn (gen_lshrsi3_n_clobbers_t (operands[0], operands[1], operands[2]));
      else
        emit_insn (gen_lshrsi3_n (operands[0], operands[1], operands[2]));
      DONE;
    }

  if (TARGET_DYNSHIFT && ! CONST_INT_P (operands[2]))
    {
      rtx neg_count = gen_reg_rtx (SImode);
      emit_insn (gen_negsi2 (neg_count, operands[2]));
      emit_insn (gen_lshrsi3_d (operands[0], operands[1], neg_count));
      DONE;
    }

  /* If the lshrsi3_* insn is going to clobber the T_REG it must be
     expanded here.  */
  if (CONST_INT_P (operands[2])
      && sh_lshrsi_clobbers_t_reg_p (operands[2])
      && ! sh_dynamicalize_shift_p (operands[2]))
    {
      emit_insn (gen_lshrsi3_n_clobbers_t (operands[0], operands[1],
                 operands[2]));
      DONE;
    }

  /* Expand a library call for the dynamic shift.  */
  if (!CONST_INT_P (operands[2]) && !TARGET_DYNSHIFT)
    {
      emit_move_insn (gen_rtx_REG (SImode, R4_REG), operands[1]);
      rtx funcaddr = gen_reg_rtx (Pmode);
      rtx lab = function_symbol (funcaddr, "__lshrsi3_r0", SFUNC_STATIC).lab;
      emit_insn (gen_lshrsi3_d_call (operands[0], operands[2], funcaddr, lab));
      DONE;
    }
})

(define_insn "lshrsi3_k"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r")
        (lshiftrt:SI (match_operand:SI 1 "arith_reg_operand" "0")
                     (match_operand:SI 2 "p27_rshift_count_operand" "P27")))]
  "TARGET_SH1"
  "shlr%O2      %0"
  [(set_attr "type" "arith")])

(define_insn_and_split "lshrsi3_d"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r")
        (lshiftrt:SI (match_operand:SI 1 "arith_reg_operand" "0")
                     (neg:SI (match_operand:SI 2 "shift_count_operand" "r"))))]
  "TARGET_DYNSHIFT"
  "shld %2,%0"
  "&& CONST_INT_P (operands[2]) && ! sh_dynamicalize_shift_p (operands[2])
   && ! sh_lshrsi_clobbers_t_reg_p (operands[2])"
  [(const_int 0)]
{
  /* The shift count const_int is a negative value for all dynamic
     right shift insns.  */
  operands[2] = GEN_INT (- INTVAL (operands[2]));

  if (satisfies_constraint_P27 (operands[2]))
    {
      /* This will not be done for a shift amount of 1, because it would
         clobber the T_REG.  */
      emit_insn (gen_lshrsi3_k (operands[0], operands[1], operands[2]));
      DONE;
    }
  else if (! satisfies_constraint_P27 (operands[2]))
    {
      /* This must happen before reload, otherwise the constant will be moved
         into a register due to the "r" constraint, after which this split
         cannot be done anymore.
         Unfortunately the move insn will not always be eliminated.
         Also, here we must not create a shift sequence that clobbers the
         T_REG.  */
      emit_move_insn (operands[0], operands[1]);
      gen_shifty_op (LSHIFTRT, operands);
      DONE;
    }

  FAIL;
}
  [(set_attr "type" "dyn_shift")])

;; If dynamic shifts are not available use a library function.
;; By specifying the pattern we reduce the number of call clobbered regs.
;; In order to make combine understand the truncation of the shift amount
;; operand we have to allow it to use pseudo regs for the shift operands.
(define_insn "lshrsi3_d_call"
  [(set (match_operand:SI 0 "arith_reg_dest" "=z,z")
        (lshiftrt:SI (reg:SI R4_REG)
                     (and:SI (match_operand:SI 1 "arith_reg_operand" "z,z")
                             (const_int 31))))
   (use (match_operand:SI 2 "arith_reg_operand" "r,r"))
   (use (match_operand 3 "" "Z,Ccl"))
   (clobber (reg:SI T_REG))
   (clobber (reg:SI PR_REG))]
  "TARGET_SH1 && !TARGET_DYNSHIFT"
  "@
        jsr     @%2%#
        bsrf    %2\n%O3:%#"
  [(set_attr "type" "sfunc")
   (set_attr "needs_delay_slot" "yes")])

(define_insn_and_split "lshrsi3_n"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r")
        (lshiftrt:SI (match_operand:SI 1 "arith_reg_operand" "0")
                     (match_operand:SI 2 "not_p27_rshift_count_operand")))]
  "TARGET_SH1 && ! sh_lshrsi_clobbers_t_reg_p (operands[2])"
  "#"
  "&& (reload_completed
       || (sh_dynamicalize_shift_p (operands[2]) && can_create_pseudo_p ()))"
  [(const_int 0)]
{
  if (sh_dynamicalize_shift_p (operands[2]) && can_create_pseudo_p ())
    {
      /* If this pattern was picked and dynamic shifts are supported, switch
         to dynamic shift pattern before reload.  */
      operands[2] = GEN_INT (- INTVAL (operands[2]));
      emit_insn (gen_lshrsi3_d (operands[0], operands[1], operands[2]));
    }
  else
    gen_shifty_op (LSHIFTRT, operands);

  DONE;
})

;; The lshrsi3_n_clobbers_t pattern also works as a simplified version of
;; the shlr pattern.
(define_insn_and_split "lshrsi3_n_clobbers_t"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r")
        (lshiftrt:SI (match_operand:SI 1 "arith_reg_operand" "0")
                     (match_operand:SI 2 "not_p27_rshift_count_operand")))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1 && sh_lshrsi_clobbers_t_reg_p (operands[2])"
  "#"
  "&& (reload_completed || INTVAL (operands[2]) == 31
       || (sh_dynamicalize_shift_p (operands[2]) && can_create_pseudo_p ()))"
  [(const_int 0)]
{
  if (INTVAL (operands[2]) == 31)
    {
      emit_insn (gen_shll (operands[0], operands[1]));
      emit_insn (gen_movt (operands[0], get_t_reg_rtx ()));
    }
  else if (sh_dynamicalize_shift_p (operands[2]) && can_create_pseudo_p ())
    {
      /* If this pattern was picked and dynamic shifts are supported, switch
         to dynamic shift pattern before reload.  */
      operands[2] = GEN_INT (- INTVAL (operands[2]));
      emit_insn (gen_lshrsi3_d (operands[0], operands[1], operands[2]));
    }
  else
    gen_shifty_op (LSHIFTRT, operands);

  DONE;
})

(define_insn "shlr"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r")
        (lshiftrt:SI (match_operand:SI 1 "arith_reg_operand" "0")
                     (const_int 1)))
   (set (reg:SI T_REG)
        (and:SI (match_dup 1) (const_int 1)))]
  "TARGET_SH1"
  "shlr %0"
  [(set_attr "type" "arith")])

;; . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
;; DImode logical shift right

(define_expand "lshrdi3"
  [(parallel [(set (match_operand:DI 0 "arith_reg_operand" "")
                   (lshiftrt:DI (match_operand:DI 1 "arith_reg_operand" "")
                               (match_operand:DI 2 "immediate_operand" "")))
             (clobber (reg:SI T_REG))])]
  ""
{
  if (!CONST_INT_P (operands[2]) || INTVAL (operands[2]) != 1)
    FAIL;
})

(define_insn_and_split "lshrdi3_k"
  [(set (match_operand:DI 0 "arith_reg_dest" "=r")
        (lshiftrt:DI (match_operand:DI 1 "arith_reg_operand" "0")
                     (const_int 1)))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1"
  "#"
  "&& reload_completed"
  [(const_int 0)]
{
  rtx high = gen_highpart (SImode, operands[0]);
  rtx low = gen_lowpart (SImode, operands[0]);
  emit_insn (gen_shlr (high, high));
  emit_insn (gen_rotcr (low, low, get_t_reg_rtx ()));
  DONE;
})

;; . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
;; Combined left/right shifts

(define_split
  [(set (match_operand:SI 0 "register_operand" "")
        (and:SI (ashift:SI (match_operand:SI 1 "register_operand" "")
                           (match_operand:SI 2 "const_int_operand" ""))
                (match_operand:SI 3 "const_int_operand" "")))]
  "TARGET_SH1 && reload_completed && (unsigned)INTVAL (operands[2]) < 32"
  [(use (reg:SI R0_REG))]
{
  if (gen_shl_and (operands[0], operands[2], operands[3], operands[1]))
    FAIL;
  DONE;
})

(define_split
  [(set (match_operand:SI 0 "register_operand" "")
        (and:SI (ashift:SI (match_operand:SI 1 "register_operand" "")
                           (match_operand:SI 2 "const_int_operand" ""))
                (match_operand:SI 3 "const_int_operand" "")))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1 && reload_completed && (unsigned)INTVAL (operands[2]) < 32"
  [(use (reg:SI R0_REG))]
{
  if (gen_shl_and (operands[0], operands[2], operands[3], operands[1]))
    FAIL;
  DONE;
})

(define_insn ""
  [(set (match_operand:SI 0 "register_operand" "=r")
        (and:SI (ashift:SI (match_operand:SI 1 "register_operand" "0")
                           (match_operand:SI 2 "const_int_operand" "n"))
                (match_operand:SI 3 "const_int_operand" "n")))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1 && shl_and_kind (operands[2], operands[3], 0) == 1"
  "#"
  [(set (attr "length")
        (cond [(eq (symbol_ref "shl_and_length (insn)") (const_int 2))
               (const_string "4")
               (eq (symbol_ref "shl_and_length (insn)") (const_int 3))
               (const_string "6")
               (eq (symbol_ref "shl_and_length (insn)") (const_int 4))
               (const_string "8")
               (eq (symbol_ref "shl_and_length (insn)") (const_int 5))
               (const_string "10")
               (eq (symbol_ref "shl_and_length (insn)") (const_int 6))
               (const_string "12")
               (eq (symbol_ref "shl_and_length (insn)") (const_int 7))
               (const_string "14")
               (eq (symbol_ref "shl_and_length (insn)") (const_int 8))
               (const_string "16")]
              (const_string "18")))
   (set_attr "type" "arith")])

(define_insn ""
  [(set (match_operand:SI 0 "register_operand" "=z")
        (and:SI (ashift:SI (match_operand:SI 1 "register_operand" "0")
                           (match_operand:SI 2 "const_int_operand" "n"))
                (match_operand:SI 3 "const_int_operand" "n")))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1 && shl_and_kind (operands[2], operands[3], 0) == 2"
  "#"
  [(set (attr "length")
        (cond [(eq (symbol_ref "shl_and_length (insn)") (const_int 2))
               (const_string "4")
               (eq (symbol_ref "shl_and_length (insn)") (const_int 3))
               (const_string "6")
               (eq (symbol_ref "shl_and_length (insn)") (const_int 4))
               (const_string "8")]
              (const_string "10")))
   (set_attr "type" "arith")])

;; shift left / and combination with a scratch register: The combine pass
;; does not accept the individual instructions, even though they are
;; cheap.  But it needs a precise description so that it is usable after
;; reload.
(define_insn "and_shl_scratch"
  [(set (match_operand:SI 0 "register_operand" "=r,&r")
        (lshiftrt:SI
         (ashift:SI
          (and:SI
           (lshiftrt:SI (match_operand:SI 1 "register_operand" "r,0")
                        (match_operand:SI 2 "const_int_operand" "N,n"))
           (match_operand:SI 3 "" "0,r"))
          (match_operand:SI 4 "const_int_operand" "n,n"))
         (match_operand:SI 5 "const_int_operand" "n,n")))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1"
  "#"
  [(set (attr "length")
        (cond [(eq (symbol_ref "shl_and_scr_length (insn)") (const_int 2))
               (const_string "4")
               (eq (symbol_ref "shl_and_scr_length (insn)") (const_int 3))
               (const_string "6")
               (eq (symbol_ref "shl_and_scr_length (insn)") (const_int 4))
               (const_string "8")
               (eq (symbol_ref "shl_and_scr_length (insn)") (const_int 5))
               (const_string "10")]
              (const_string "12")))
   (set_attr "type" "arith")])

(define_split
  [(set (match_operand:SI 0 "register_operand" "")
        (lshiftrt:SI
         (ashift:SI
          (and:SI
           (lshiftrt:SI (match_operand:SI 1 "register_operand" "")
                        (match_operand:SI 2 "const_int_operand" ""))
           (match_operand:SI 3 "register_operand" ""))
          (match_operand:SI 4 "const_int_operand" ""))
         (match_operand:SI 5 "const_int_operand" "")))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1"
  [(use (reg:SI R0_REG))]
{
  rtx and_source = operands[rtx_equal_p (operands[0], operands[1]) ? 3 : 1];

  if (INTVAL (operands[2]))
    {
      gen_shifty_op (LSHIFTRT, operands);
    }
  emit_insn (gen_andsi3 (operands[0], operands[0], and_source));
  operands[2] = operands[4];
  gen_shifty_op (ASHIFT, operands);
  if (INTVAL (operands[5]))
    {
      operands[2] = operands[5];
      gen_shifty_op (LSHIFTRT, operands);
    }
  DONE;
})

;; signed left/right shift combination.
(define_split
  [(set (match_operand:SI 0 "register_operand" "")
        (sign_extract:SI
         (ashift:SI (match_operand:SI 1 "register_operand" "")
                    (match_operand:SI 2 "const_int_operand" ""))
         (match_operand:SI 3 "const_int_operand" "")
         (const_int 0)))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1"
  [(use (reg:SI R0_REG))]
{
  if (gen_shl_sext (operands[0], operands[2], operands[3], operands[1]))
    FAIL;
  DONE;
})

(define_insn "shl_sext_ext"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (sign_extract:SI
         (ashift:SI (match_operand:SI 1 "register_operand" "0")
                    (match_operand:SI 2 "const_int_operand" "n"))
         (match_operand:SI 3 "const_int_operand" "n")
         (const_int 0)))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1 && (unsigned)shl_sext_kind (operands[2], operands[3], 0) - 1 < 5"
  "#"
  [(set (attr "length")
        (cond [(match_test "shl_sext_length (insn)")
               (const_string "2")
               (eq (symbol_ref "shl_sext_length (insn)") (const_int 2))
               (const_string "4")
               (eq (symbol_ref "shl_sext_length (insn)") (const_int 3))
               (const_string "6")
               (eq (symbol_ref "shl_sext_length (insn)") (const_int 4))
               (const_string "8")
               (eq (symbol_ref "shl_sext_length (insn)") (const_int 5))
               (const_string "10")
               (eq (symbol_ref "shl_sext_length (insn)") (const_int 6))
               (const_string "12")
               (eq (symbol_ref "shl_sext_length (insn)") (const_int 7))
               (const_string "14")
               (eq (symbol_ref "shl_sext_length (insn)") (const_int 8))
               (const_string "16")]
              (const_string "18")))
    (set_attr "type" "arith")])

(define_insn "shl_sext_sub"
  [(set (match_operand:SI 0 "register_operand" "=z")
        (sign_extract:SI
         (ashift:SI (match_operand:SI 1 "register_operand" "0")
                    (match_operand:SI 2 "const_int_operand" "n"))
         (match_operand:SI 3 "const_int_operand" "n")
         (const_int 0)))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1 && (shl_sext_kind (operands[2], operands[3], 0) & ~1) == 6"
  "#"
  [(set (attr "length")
        (cond [(eq (symbol_ref "shl_sext_length (insn)") (const_int 3))
               (const_string "6")
               (eq (symbol_ref "shl_sext_length (insn)") (const_int 4))
               (const_string "8")
               (eq (symbol_ref "shl_sext_length (insn)") (const_int 5))
               (const_string "10")
               (eq (symbol_ref "shl_sext_length (insn)") (const_int 6))
               (const_string "12")]
              (const_string "14")))
    (set_attr "type" "arith")])

;; The xtrct_left and xtrct_right patterns are used in expansions of DImode
;; shifts by 16, and allow the xtrct instruction to be generated from C
;; source.
(define_insn "xtrct_left"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r")
        (ior:SI (ashift:SI (match_operand:SI 1 "arith_reg_operand" "r")
                           (const_int 16))
                (lshiftrt:SI (match_operand:SI 2 "arith_reg_operand" "0")
                             (const_int 16))))]
  "TARGET_SH1"
  "xtrct        %1,%0"
  [(set_attr "type" "arith")])

(define_insn "xtrct_right"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r")
        (ior:SI (lshiftrt:SI (match_operand:SI 1 "arith_reg_operand" "0")
                             (const_int 16))
                (ashift:SI (match_operand:SI 2 "arith_reg_operand" "r")
                           (const_int 16))))]
  "TARGET_SH1"
  "xtrct        %2,%0"
  [(set_attr "type" "arith")])

;; -------------------------------------------------------------------------
;; Unary arithmetic
;; -------------------------------------------------------------------------

(define_insn "negc"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r")
        (neg:SI (plus:SI (reg:SI T_REG)
                         (match_operand:SI 1 "arith_reg_operand" "r"))))
   (set (reg:SI T_REG)
        (ne:SI (ior:SI (reg:SI T_REG) (match_dup 1))
               (const_int 0)))]
  "TARGET_SH1"
  "negc %1,%0"
  [(set_attr "type" "arith")])

;; A simplified version of the negc insn, where the exact value of the
;; T bit doesn't matter.  This is easier for combine to pick up.
;; Notice that '0 - x - 1' is the same as '~x', thus we don't specify
;; extra patterns for this case.
(define_insn_and_split "*negc"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r")
        (minus:SI (neg:SI (match_operand:SI 1 "arith_reg_operand" "r"))
                  (match_operand 2 "treg_set_expr")))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1 && can_create_pseudo_p ()"
  "#"
  "&& 1"
  [(const_int 0)]
{
  sh_split_treg_set_expr (operands[2], curr_insn);
  emit_insn (gen_negc (operands[0], operands[1]));
  DONE;
});

;; Don't split into individual negc insns immediately so that neg:DI (abs:DI)
;; can be combined.
(define_insn_and_split "negdi2"
  [(set (match_operand:DI 0 "arith_reg_dest")
        (neg:DI (match_operand:DI 1 "arith_reg_operand")))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1"
  "#"
  "&& can_create_pseudo_p ()"
  [(const_int 0)]
{
  emit_insn (gen_clrt ());
  emit_insn (gen_negc (gen_lowpart (SImode, operands[0]),
                       gen_lowpart (SImode, operands[1])));
  emit_insn (gen_negc (gen_highpart (SImode, operands[0]),
                       gen_highpart (SImode, operands[1])));
  DONE;
})

(define_insn "negsi2"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r")
        (neg:SI (match_operand:SI 1 "arith_reg_operand" "r")))]
  "TARGET_SH1"
  "neg  %1,%0"
  [(set_attr "type" "arith")])

(define_insn_and_split "one_cmplsi2"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r")
        (not:SI (match_operand:SI 1 "arith_reg_operand" "r")))]
  "TARGET_SH1"
  "not  %1,%0"
  "&& can_create_pseudo_p ()"
  [(set (reg:SI T_REG) (ge:SI (match_dup 1) (const_int 0)))
   (set (match_dup 0) (reg:SI T_REG))]
{
/* PR 54685
   If the result of 'unsigned int <= 0x7FFFFFFF' ends up as the following
   sequence:

     (set (reg0) (not:SI (reg0) (reg1)))
     (parallel [(set (reg2) (lshiftrt:SI (reg0) (const_int 31)))
                (clobber (reg:SI T_REG))])

   ... match and combine the sequence manually in the split pass after the
   combine pass.  Notice that combine does try the target pattern of this
   split, but if the pattern is added it interferes with other patterns, in
   particular with the div0s comparisons.
   This could also be done with a peephole but doing it here before register
   allocation can save one temporary.
   When we're here, the not:SI pattern obviously has been matched already
   and we only have to see whether the following insn is the left shift.  */

  rtx_insn *i = next_nonnote_insn_bb (curr_insn);
  if (i == NULL_RTX || !NONJUMP_INSN_P (i))
    FAIL;

  rtx p = PATTERN (i);
  if (GET_CODE (p) != PARALLEL || XVECLEN (p, 0) != 2)
    FAIL;

  rtx p0 = XVECEXP (p, 0, 0);
  rtx p1 = XVECEXP (p, 0, 1);

  if (/* (set (reg2) (lshiftrt:SI (reg0) (const_int 31)))  */
      GET_CODE (p0) == SET
      && GET_CODE (XEXP (p0, 1)) == LSHIFTRT
      && REG_P (XEXP (XEXP (p0, 1), 0))
      && REGNO (XEXP (XEXP (p0, 1), 0)) == REGNO (operands[0])
      && CONST_INT_P (XEXP (XEXP (p0, 1), 1))
      && INTVAL (XEXP (XEXP (p0, 1), 1)) == 31

      /* (clobber (reg:SI T_REG))  */
      && GET_CODE (p1) == CLOBBER && REG_P (XEXP (p1, 0))
      && REGNO (XEXP (p1, 0)) == T_REG)
    {
      operands[0] = XEXP (p0, 0);
      set_insn_deleted (i);
    }
  else
    FAIL;
}
  [(set_attr "type" "arith")])

(define_insn_and_split "abs<mode>2"
  [(set (match_operand:SIDI 0 "arith_reg_dest")
        (abs:SIDI (match_operand:SIDI 1 "arith_reg_operand")))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1"
  "#"
  "&& can_create_pseudo_p ()"
  [(const_int 0)]
{
  if (<MODE>mode == SImode)
    emit_insn (gen_cmpgesi_t (operands[1], const0_rtx));
  else
    {
      rtx high_src = gen_highpart (SImode, operands[1]);
      emit_insn (gen_cmpgesi_t (high_src, const0_rtx));
    }

  emit_insn (gen_neg<mode>_cond (operands[0], operands[1], operands[1],
                                 const1_rtx));
  DONE;
})

(define_insn_and_split "*negabs<mode>2"
  [(set (match_operand:SIDI 0 "arith_reg_dest")
        (neg:SIDI (abs:SIDI (match_operand:SIDI 1 "arith_reg_operand"))))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1"
  "#"
  "&& can_create_pseudo_p ()"
  [(const_int 0)]
{
  if (<MODE>mode == SImode)
    emit_insn (gen_cmpgesi_t (operands[1], const0_rtx));
  else
    {
      rtx high_src = gen_highpart (SImode, operands[1]);
      emit_insn (gen_cmpgesi_t (high_src, const0_rtx));
    }

  emit_insn (gen_neg<mode>_cond (operands[0], operands[1], operands[1],
                                 const0_rtx));
  DONE;
})

;; The SH4 202 can do zero-offset branches without pipeline stalls.
;; This can be used as some kind of conditional execution, which is useful
;; for abs.
;; Actually the instruction scheduling should decide whether to use a
;; zero-offset branch or not for any generic case involving a single
;; instruction on SH4 202.
(define_insn_and_split "negsi_cond"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r,r")
        (if_then_else
          (eq:SI (reg:SI T_REG) (match_operand:SI 3 "const_int_operand" "M,N"))
          (match_operand:SI 1 "arith_reg_operand" "0,0")
          (neg:SI (match_operand:SI 2 "arith_reg_operand" "r,r"))))]
  "TARGET_SH1 && TARGET_ZDCBRANCH"
{
  static const char* alt[] =
  {
       "bt      0f"     "\n"
    "   neg     %2,%0"  "\n"
    "0:",

       "bf      0f"     "\n"
    "   neg     %2,%0"  "\n"
    "0:"
  };
  return alt[which_alternative];
}
  "TARGET_SH1 && ! TARGET_ZDCBRANCH"
  [(const_int 0)]
{
  rtx_code_label *skip_neg_label = gen_label_rtx ();

  emit_move_insn (operands[0], operands[1]);

  emit_jump_insn (INTVAL (operands[3])
                  ? gen_branch_true (skip_neg_label)
                  : gen_branch_false (skip_neg_label));

  emit_label_after (skip_neg_label,
                    emit_insn (gen_negsi2 (operands[0], operands[1])));
  DONE;
}
  [(set_attr "type" "arith") ;; poor approximation
   (set_attr "length" "4")])

(define_insn_and_split "negdi_cond"
  [(set (match_operand:DI 0 "arith_reg_dest")
        (if_then_else
          (eq:SI (reg:SI T_REG) (match_operand:SI 3 "const_int_operand"))
          (match_operand:DI 1 "arith_reg_operand")
          (neg:DI (match_operand:DI 2 "arith_reg_operand"))))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1"
  "#"
  "&& can_create_pseudo_p ()"
  [(const_int 0)]
{
  rtx_code_label *skip_neg_label = gen_label_rtx ();

  emit_move_insn (operands[0], operands[1]);

  emit_jump_insn (INTVAL (operands[3]) 
                  ? gen_branch_true (skip_neg_label)
                  : gen_branch_false (skip_neg_label));

  if (!INTVAL (operands[3]))
    emit_insn (gen_clrt ());

  emit_insn (gen_negc (gen_lowpart (SImode, operands[0]),
                       gen_lowpart (SImode, operands[1])));
  emit_label_after (skip_neg_label,
                    emit_insn (gen_negc (gen_highpart (SImode, operands[0]),
                                         gen_highpart (SImode, operands[1]))));
  DONE;
})

(define_expand "bswapsi2"
  [(set (match_operand:SI 0 "arith_reg_dest" "")
        (bswap:SI (match_operand:SI 1 "arith_reg_operand" "")))]
  "TARGET_SH1"
{
  if (! can_create_pseudo_p ())
    FAIL;
  else
    {
      rtx tmp0 = gen_reg_rtx (SImode);
      rtx tmp1 = gen_reg_rtx (SImode);

      emit_insn (gen_swapbsi2 (tmp0, operands[1]));
      emit_insn (gen_rotlsi3_16 (tmp1, tmp0));
      emit_insn (gen_swapbsi2 (operands[0], tmp1));
      DONE;
    }
})

(define_insn "swapbsi2"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r")
        (ior:SI (and:SI (match_operand:SI 1 "arith_reg_operand" "r")
                        (const_int -65536)) ;; 0xFFFF0000
                (ior:SI (and:SI (ashift:SI (match_dup 1) (const_int 8))
                                (const_int 65280))
                        (and:SI (ashiftrt:SI (match_dup 1) (const_int 8))
                                (const_int 255)))))]
  "TARGET_SH1"
  "swap.b       %1,%0"
  [(set_attr "type" "arith")])

;; The *swapbisi2_and_shl8 pattern helps the combine pass simplifying
;; partial byte swap expressions such as...
;;   ((x & 0xFF) << 8) | ((x >> 8) & 0xFF).
;; ...which are currently not handled by the tree optimizers.
;; The combine pass will not initially try to combine the full expression,
;; but only some sub-expressions.  In such a case the *swapbisi2_and_shl8
;; pattern acts as an intermediate pattern that will eventually lead combine
;; to the swapbsi2 pattern above.
;; As a side effect this also improves code that does (x & 0xFF) << 8
;; or (x << 8) & 0xFF00.
(define_insn_and_split "*swapbisi2_and_shl8"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r")
        (ior:SI (and:SI (ashift:SI (match_operand:SI 1 "arith_reg_operand" "r")
                                   (const_int 8))
                        (const_int 65280))
                (match_operand:SI 2 "arith_reg_operand" "r")))]
  "TARGET_SH1 && ! reload_in_progress && ! reload_completed"
  "#"
  "&& can_create_pseudo_p ()"
  [(const_int 0)]
{
  rtx tmp0 = gen_reg_rtx (SImode);
  rtx tmp1 = gen_reg_rtx (SImode);

  emit_insn (gen_zero_extendqisi2 (tmp0, gen_lowpart (QImode, operands[1])));
  emit_insn (gen_swapbsi2 (tmp1, tmp0));
  emit_insn (gen_iorsi3 (operands[0], tmp1, operands[2]));
  DONE;
})

;; The *swapbhisi2 pattern is, like the *swapbisi2_and_shl8 pattern, another
;; intermediate pattern that will help the combine pass arriving at swapbsi2.
(define_insn_and_split "*swapbhisi2"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r")
        (ior:SI (and:SI (ashift:SI (match_operand:SI 1 "arith_reg_operand" "r")
                                   (const_int 8))
                        (const_int 65280))
                (zero_extract:SI (match_dup 1) (const_int 8) (const_int 8))))]
  "TARGET_SH1 && ! reload_in_progress && ! reload_completed"
  "#"
  "&& can_create_pseudo_p ()"
  [(const_int 0)]
{
  rtx tmp = gen_reg_rtx (SImode);

  emit_insn (gen_zero_extendhisi2 (tmp, gen_lowpart (HImode, operands[1])));
  emit_insn (gen_swapbsi2 (operands[0], tmp));
  DONE;
})

;; In some cases the swapbsi2 pattern might leave a sequence such as...
;;   swap.b  r4,r4
;;   mov     r4,r0
;;
;; which can be simplified to...
;;   swap.b  r4,r0
(define_peephole2
  [(set (match_operand:SI 0 "arith_reg_dest" "")
        (ior:SI (and:SI (match_operand:SI 1 "arith_reg_operand" "")
                        (const_int -65536)) ;; 0xFFFF0000
                (ior:SI (and:SI (ashift:SI (match_dup 1) (const_int 8))
                                (const_int 65280))
                        (and:SI (ashiftrt:SI (match_dup 1) (const_int 8))
                                (const_int 255)))))
   (set (match_operand:SI 2 "arith_reg_dest" "")
        (match_dup 0))]
  "TARGET_SH1 && peep2_reg_dead_p (2, operands[0])"
  [(set (match_dup 2)
        (ior:SI (and:SI (match_operand:SI 1 "arith_reg_operand" "")
                        (const_int -65536)) ;; 0xFFFF0000
                (ior:SI (and:SI (ashift:SI (match_dup 1) (const_int 8))
                                (const_int 65280))
                        (and:SI (ashiftrt:SI (match_dup 1) (const_int 8))
                                (const_int 255)))))])
\f
;; -------------------------------------------------------------------------
;; Zero extension instructions
;; -------------------------------------------------------------------------

(define_expand "zero_extend<mode>si2"
  [(set (match_operand:SI 0 "arith_reg_dest")
        (zero_extend:SI (match_operand:QIHI 1 "arith_reg_operand")))])

(define_insn_and_split "*zero_extend<mode>si2_compact"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r")
        (zero_extend:SI (match_operand:QIHI 1 "arith_reg_operand" "r")))]
  "TARGET_SH1"
  "extu.<bw>    %1,%0"
  "&& can_create_pseudo_p ()"
  [(set (match_dup 0) (match_dup 2))]
{
  /* Sometimes combine fails to combine a T bit or negated T bit store to a
     reg with a following zero extension.  In the split pass after combine,
     try to figure out how the extended reg was set.  If it originated from
     the T bit we can replace the zero extension with a reg move, which will
     be eliminated.  Notice that this also helps the *cbranch_t splitter when
     it tries to post-combine tests and conditional branches, as it does not
     check for zero extensions.  */
  operands[2] = sh_try_omit_signzero_extend (operands[1], curr_insn);
  if (operands[2] == NULL_RTX)
    FAIL;
}
  [(set_attr "type" "arith")])

(define_insn "zero_extendqihi2"
  [(set (match_operand:HI 0 "arith_reg_dest" "=r")
        (zero_extend:HI (match_operand:QI 1 "arith_reg_operand" "r")))]
  "TARGET_SH1"
  "extu.b       %1,%0"
  [(set_attr "type" "arith")])

;; SH2A supports two zero extending load instructions: movu.b and movu.w.
;; They could also be used for simple memory addresses like @Rn by setting
;; the displacement value to zero.  However, doing so too early results in
;; missed opportunities for other optimizations such as post-inc or index
;; addressing loads.
;; We don't allow the zero extending loads to match during RTL expansion,
;; as this would pessimize other optimization opportunities such as bit
;; extractions of unsigned mems, where the zero extraction is irrelevant.
;; If the zero extracting mem loads are emitted early it will be more
;; difficult to change them back to sign extending loads (which are preferred).
;; The combine pass will also try to combine mem loads and zero extends,
;; which is prevented by 'sh_legitimate_combined_insn'.
(define_insn "*zero_extend<mode>si2_disp_mem"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r,r")
        (zero_extend:SI
          (match_operand:QIHI 1 "zero_extend_movu_operand" "Sdd,Sra")))]
  "TARGET_SH2A"
  "@
        movu.<bw>       %1,%0
        movu.<bw>       @(0,%t1),%0"
  [(set_attr "type" "load")
   (set_attr "length" "4")])

;; Convert the zero extending loads in sequences such as:
;;      movu.b  @(1,r5),r0      movu.w  @(2,r5),r0
;;      mov.b   r0,@(1,r4)      mov.b   r0,@(1,r4)
;;
;; back to sign extending loads like:
;;      mov.b   @(1,r5),r0      mov.w   @(2,r5),r0
;;      mov.b   r0,@(1,r4)      mov.b   r0,@(1,r4)
;;
;; if the extension type is irrelevant.  The sign extending mov.{b|w} insn
;; is only 2 bytes in size if the displacement is {K04|K05}.
;; If the displacement is greater it doesn't matter, so we convert anyways.
(define_peephole2
  [(set (match_operand:SI 0 "arith_reg_dest" "")
        (zero_extend:SI (match_operand 1 "displacement_mem_operand" "")))
   (set (match_operand 2 "nonimmediate_operand" "")
        (match_operand 3 "arith_reg_operand" ""))]
  "TARGET_SH2A
   && REGNO (operands[0]) == REGNO (operands[3])
   && peep2_reg_dead_p (2, operands[0])
   && GET_MODE_SIZE (GET_MODE (operands[2]))
      <= GET_MODE_SIZE (GET_MODE (operands[1]))"
  [(set (match_dup 0) (sign_extend:SI (match_dup 1)))
   (set (match_dup 2) (match_dup 3))])

;; Fold sequences such as
;;      mov.b   @r3,r7
;;      extu.b  r7,r7
;; into
;;      movu.b  @(0,r3),r7
;; This does not reduce the code size but the number of instructions is
;; halved, which results in faster code.
(define_peephole2
  [(set (match_operand:SI 0 "arith_reg_dest" "")
        (sign_extend:SI (match_operand 1 "simple_mem_operand" "")))
   (set (match_operand:SI 2 "arith_reg_dest" "")
        (zero_extend:SI (match_operand 3 "arith_reg_operand" "")))]
  "TARGET_SH2A
   && GET_MODE (operands[1]) == GET_MODE (operands[3])
   && (GET_MODE (operands[1]) == QImode || GET_MODE (operands[1]) == HImode)
   && REGNO (operands[0]) == REGNO (operands[3])
   && (REGNO (operands[2]) == REGNO (operands[0])
       || peep2_reg_dead_p (2, operands[0]))"
  [(set (match_dup 2) (zero_extend:SI (match_dup 4)))]
{
  operands[4]
    = replace_equiv_address (operands[1],
                             gen_rtx_PLUS (SImode, XEXP (operands[1], 0),
                                           const0_rtx));
})

;; -------------------------------------------------------------------------
;; Sign extension instructions
;; -------------------------------------------------------------------------

;; ??? This should be a define expand.
;; ??? Or perhaps it should be dropped?

;; convert_move generates good code for SH[1-4].

(define_expand "extend<mode>si2"
  [(set (match_operand:SI 0 "arith_reg_dest")
        (sign_extend:SI (match_operand:QIHI 1 "general_extend_operand")))])

(define_insn_and_split "*extend<mode>si2_compact_reg"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r")
        (sign_extend:SI (match_operand:QIHI 1 "arith_reg_operand" "r")))]
  "TARGET_SH1"
  "exts.<bw>    %1,%0"
  "&& can_create_pseudo_p ()"
  [(set (match_dup 0) (match_dup 2))]
{
  /* Sometimes combine fails to combine a T bit or negated T bit store to a
     reg with a following sign extension.  In the split pass after combine,
     try to figure the extended reg was set.  If it originated from the T
     bit we can replace the sign extension with a reg move, which will be
     eliminated.  */
  operands[2] = sh_try_omit_signzero_extend (operands[1], curr_insn);
  if (operands[2] == NULL_RTX)
    FAIL;
}
  [(set_attr "type" "arith")])

;; FIXME: Fold non-SH2A and SH2A alternatives with "enabled" attribute.
;; See movqi insns.
(define_insn "*extend<mode>si2_compact_mem_disp"
  [(set (match_operand:SI 0 "arith_reg_dest" "=z,r")
        (sign_extend:SI
          (mem:QIHI
            (plus:SI
              (match_operand:SI 1 "arith_reg_operand" "%r,r")
              (match_operand:SI 2 "const_int_operand" "<disp04>,N")))))]
  "TARGET_SH1 && ! TARGET_SH2A
   && sh_legitimate_index_p (<MODE>mode, operands[2], false, true)"
  "@
        mov.<bw>        @(%O2,%1),%0
        mov.<bw>        @%1,%0"
  [(set_attr "type" "load")])

(define_insn "*extend<mode>si2_compact_mem_disp"
  [(set (match_operand:SI 0 "arith_reg_dest" "=z,r,r")
        (sign_extend:SI
          (mem:QIHI
            (plus:SI
              (match_operand:SI 1 "arith_reg_operand" "%r,r,r")
              (match_operand:SI 2 "const_int_operand" "<disp04>,N,<disp12>")))))]
  "TARGET_SH2A && sh_legitimate_index_p (<MODE>mode, operands[2], true, true)"
  "@
        mov.<bw>        @(%O2,%1),%0
        mov.<bw>        @%1,%0
        mov.<bw>        @(%O2,%1),%0"
  [(set_attr "type" "load")
   (set_attr "length" "2,2,4")])

;; The pre-dec and post-inc mems must be captured by the '<' and '>'
;; constraints, otherwise wrong code might get generated.
(define_insn "*extend<mode>si2_predec"
  [(set (match_operand:SI 0 "arith_reg_dest" "=z")
        (sign_extend:SI (match_operand:QIHI 1 "pre_dec_mem" "<")))]
  "TARGET_SH2A"
  "mov.<bw>     %1,%0"
  [(set_attr "type" "load")])

;; The *_snd patterns will take care of other QImode/HImode addressing
;; modes than displacement addressing.  They must be defined _after_ the
;; displacement addressing patterns.  Otherwise the displacement addressing
;; patterns will not be picked.
(define_insn "*extend<mode>si2_compact_snd"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r")
        (sign_extend:SI
          (match_operand:QIHI 1 "movsrc_no_disp_mem_operand" "Snd")))]
  "TARGET_SH1"
  "mov.<bw>     %1,%0"
  [(set_attr "type" "load")])

(define_expand "extendqihi2"
  [(set (match_operand:HI 0 "arith_reg_dest")
        (sign_extend:HI (match_operand:QI 1 "arith_reg_operand")))]
  "TARGET_SH1")

(define_insn "*extendqihi2_compact_reg"
  [(set (match_operand:HI 0 "arith_reg_dest" "=r")
        (sign_extend:HI (match_operand:QI 1 "arith_reg_operand" "r")))]
  "TARGET_SH1"
  "exts.b       %1,%0"
  [(set_attr "type" "arith")])

;; -------------------------------------------------------------------------
;; Move instructions
;; -------------------------------------------------------------------------

(define_expand "push"
  [(set (mem:SI (pre_dec:SI (reg:SI SP_REG)))
        (match_operand:SI 0 "register_operand"))])

(define_expand "pop"
  [(set (match_operand:SI 0 "register_operand")
        (mem:SI (post_inc:SI (reg:SI SP_REG))))])

(define_expand "push_e"
  [(parallel [(set (mem:SF (pre_dec:SI (reg:SI SP_REG)))
                   (match_operand:SF 0 "" ""))
              (use (reg:SI FPSCR_MODES_REG))
              (clobber (scratch:SI))])])

(define_insn "push_fpul"
  [(set (mem:SF (pre_dec:SI (reg:SI SP_REG))) (reg:SF FPUL_REG))]
  "TARGET_SH2E"
  "sts.l        fpul,@-r15"
  [(set_attr "type" "fstore")
   (set_attr "late_fp_use" "yes")
   (set_attr "hit_stack" "yes")])

;; DFmode pushes for sh4 require a lot of what is defined for movdf_i4,
;; so use that.
(define_expand "push_4"
  [(parallel [(set (mem:DF (pre_dec:SI (reg:SI SP_REG)))
                   (match_operand:DF 0 "" ""))
              (use (reg:SI FPSCR_MODES_REG))
              (clobber (scratch:SI))])])

(define_expand "pop_e"
  [(parallel [(set (match_operand:SF 0 "" "")
              (mem:SF (post_inc:SI (reg:SI SP_REG))))
              (use (reg:SI FPSCR_MODES_REG))
              (clobber (scratch:SI))])])

(define_insn "pop_fpul"
  [(set (reg:SF FPUL_REG) (mem:SF (post_inc:SI (reg:SI SP_REG))))]
  "TARGET_SH2E"
  "lds.l        @r15+,fpul"
  [(set_attr "type" "load")
   (set_attr "hit_stack" "yes")])

(define_expand "pop_4"
  [(parallel [(set (match_operand:DF 0 "" "")
                   (mem:DF (post_inc:SI (reg:SI SP_REG))))
              (use (reg:SI FPSCR_MODES_REG))
              (clobber (scratch:SI))])])

(define_expand "push_fpscr"
  [(const_int 0)]
  "TARGET_SH2E"
{
  add_reg_note (
    emit_insn (
      gen_sts_fpscr (
        gen_frame_mem (SImode, gen_rtx_PRE_DEC (Pmode, stack_pointer_rtx)))),
    REG_INC, stack_pointer_rtx);
  DONE;
})

(define_expand "pop_fpscr"
  [(const_int 0)]
  "TARGET_SH2E"
{
  add_reg_note (
    emit_insn (
      gen_lds_fpscr (
        gen_frame_mem (SImode, gen_rtx_POST_INC (Pmode, stack_pointer_rtx)))),
    REG_INC, stack_pointer_rtx);
  DONE;
})

;; The clrt and sett patterns can happen as the result of optimization and
;; insn expansion.
;; Comparisons might get simplified to a move of zero or 1 into the T reg.
;; In this case they might not disappear completely, because the T reg is
;; a fixed hard reg.
;; When DImode operations that use the T reg as carry/borrow are split into
;; individual SImode operations, the T reg is usually cleared before the
;; first SImode insn.
(define_insn "clrt"
  [(set (reg:SI T_REG) (const_int 0))]
  "TARGET_SH1"
  "clrt"
  [(set_attr "type" "mt_group")])

(define_insn "sett"
  [(set (reg:SI T_REG) (const_int 1))]
  "TARGET_SH1"
  "sett"
  [(set_attr "type" "mt_group")])

;; Use the combine pass to transform sequences such as
;;      mov     r5,r0
;;      add     #1,r0
;;      shll2   r0
;;      mov.l   @(r0,r4),r0
;; into
;;      shll2   r5
;;      add     r4,r5
;;      mov.l   @(4,r5),r0
;;
;; See also PR 39423.
;; Notice that these patterns have a T_REG clobber, because the shift
;; sequence that will be split out might clobber the T_REG.  Ideally, the
;; clobber would be added conditionally, depending on the result of
;; sh_ashlsi_clobbers_t_reg_p.  When splitting out the shifts we must go
;; through the ashlsi3 expander in order to get the right shift insn --
;; a T_REG clobbering or non-clobbering shift sequence or dynamic shift.
;; FIXME: Combine never tries this kind of patterns for DImode.
(define_insn_and_split "*movsi_index_disp_load"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r")
        (match_operand:SI 1 "mem_index_disp_operand" "m"))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1"
  "#"
  "&& can_create_pseudo_p ()"
  [(set (match_dup 6) (plus:SI (match_dup 5) (match_dup 3)))
   (set (match_dup 0) (match_dup 7))]
{
  rtx mem = operands[1];
  rtx plus0_rtx = XEXP (mem, 0);
  rtx plus1_rtx = XEXP (plus0_rtx, 0);
  rtx mult_rtx = XEXP (plus1_rtx, 0);

  operands[1] = XEXP (mult_rtx, 0);
  operands[2] = GEN_INT (exact_log2 (INTVAL (XEXP (mult_rtx, 1))));
  operands[3] = XEXP (plus1_rtx, 1);
  operands[4] = XEXP (plus0_rtx, 1);
  operands[5] = gen_reg_rtx (SImode);
  operands[6] = gen_reg_rtx (SImode);
  operands[7] =
    replace_equiv_address (mem,
                           gen_rtx_PLUS (SImode, operands[6], operands[4]));

  emit_insn (gen_ashlsi3 (operands[5], operands[1], operands[2]));
})

(define_insn_and_split "*movhi_index_disp_load"
  [(set (match_operand:SI 0 "arith_reg_dest")
        (SZ_EXTEND:SI (match_operand:HI 1 "mem_index_disp_operand")))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1"
  "#"
  "&& can_create_pseudo_p ()"
  [(const_int 0)]
{
  rtx mem = operands[1];
  rtx plus0_rtx = XEXP (mem, 0);
  rtx plus1_rtx = XEXP (plus0_rtx, 0);
  rtx mult_rtx = XEXP (plus1_rtx, 0);

  rtx op_1 = XEXP (mult_rtx, 0);
  rtx op_2 = GEN_INT (exact_log2 (INTVAL (XEXP (mult_rtx, 1))));
  rtx op_3 = XEXP (plus1_rtx, 1);
  rtx op_4 = XEXP (plus0_rtx, 1);
  rtx op_5 = gen_reg_rtx (SImode);
  rtx op_6 = gen_reg_rtx (SImode);
  rtx op_7 = replace_equiv_address (mem, gen_rtx_PLUS (SImode, op_6, op_4));

  emit_insn (gen_ashlsi3 (op_5, op_1, op_2));
  emit_insn (gen_addsi3 (op_6, op_5, op_3));

  if (<CODE> == SIGN_EXTEND)
    {
      emit_insn (gen_extendhisi2 (operands[0], op_7));
      DONE;
    }
  else if (<CODE> == ZERO_EXTEND)
    {
      /* On SH2A the movu.w insn can be used for zero extending loads.  */
      if (TARGET_SH2A)
        emit_insn (gen_zero_extendhisi2 (operands[0], op_7));
      else
        {
          emit_insn (gen_extendhisi2 (operands[0], op_7));
          emit_insn (gen_zero_extendhisi2 (operands[0],
                                           gen_lowpart (HImode, operands[0])));
        }
      DONE;
    }
  else
    FAIL;
})

(define_insn_and_split "*mov<mode>_index_disp_store"
  [(set (match_operand:HISI 0 "mem_index_disp_operand" "=m")
        (match_operand:HISI 1 "arith_reg_operand" "r"))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1"
  "#"
  "&& can_create_pseudo_p ()"
  [(set (match_dup 6) (plus:SI (match_dup 5) (match_dup 3)))
   (set (match_dup 7) (match_dup 1))]
{
  rtx mem = operands[0];
  rtx plus0_rtx = XEXP (mem, 0);
  rtx plus1_rtx = XEXP (plus0_rtx, 0);
  rtx mult_rtx = XEXP (plus1_rtx, 0);

  operands[0] = XEXP (mult_rtx, 0);
  operands[2] = GEN_INT (exact_log2 (INTVAL (XEXP (mult_rtx, 1))));
  operands[3] = XEXP (plus1_rtx, 1);
  operands[4] = XEXP (plus0_rtx, 1);
  operands[5] = gen_reg_rtx (SImode);
  operands[6] = gen_reg_rtx (SImode);
  operands[7] =
    replace_equiv_address (mem,
                           gen_rtx_PLUS (SImode, operands[6], operands[4]));

  emit_insn (gen_ashlsi3 (operands[5], operands[0], operands[2]));
})

;; t/r must come after r/r, lest reload will try to reload stuff like
;; (set (subreg:SI (mem:QI (plus:SI (reg:SI SP_REG) (const_int 12)) 0) 0)
;; (made from (set (subreg:SI (reg:QI ###) 0) ) into T.
;; Notice that although this pattern allows movi20 and movi20s on non-SH2A,
;; those alternatives will not be taken, as they will be converted into
;; PC-relative loads.
(define_insn "movsi_i"
  [(set (match_operand:SI 0 "general_movdst_operand"
                            "=r,r,  r,  r,  r, r,r,r,m,<,<,x,l,x,l,r")
        (match_operand:SI 1 "general_movsrc_operand"
                            " Q,r,I08,I20,I28,mr,x,l,r,x,l,r,r,>,>,i"))]
  "TARGET_SH1 && !TARGET_FPU_ANY
   && (register_operand (operands[0], SImode)
       || register_operand (operands[1], SImode))"
  "@
        mov.l   %1,%0
        mov     %1,%0
        mov     %1,%0
        movi20  %1,%0
        movi20s %1,%0
        mov.l   %1,%0
        sts     %1,%0
        sts     %1,%0
        mov.l   %1,%0
        sts.l   %1,%0
        sts.l   %1,%0
        lds     %1,%0
        lds     %1,%0
        lds.l   %1,%0
        lds.l   %1,%0
        fake    %1,%0"
  [(set_attr "type" "pcload_si,move,movi8,move,move,load_si,mac_gp,prget,store,
                     mac_mem,pstore,gp_mac,prset,mem_mac,pload,pcload_si")
   (set_attr_alternative "length"
     [(const_int 2)
      (const_int 2)
      (const_int 2)
      (const_int 4)
      (const_int 4)
      (if_then_else (match_operand 1 "long_displacement_mem_operand")
                    (const_int 4) (const_int 2))
      (const_int 2)
      (const_int 2)
      (if_then_else (match_operand 0 "long_displacement_mem_operand")
                    (const_int 4) (const_int 2))
      (const_int 2)
      (const_int 2)
      (const_int 2)
      (const_int 2)
      (const_int 2)
      (const_int 2)
      (const_int 2)])])

;; t/r must come after r/r, lest reload will try to reload stuff like
;; (subreg:SI (reg:SF FR14_REG) 0) into T (compiling stdlib/strtod.c -m3e -O2)
;; ??? This allows moves from macl to fpul to be recognized, but these moves
;; will require a reload.
;; ??? We can't include f/f because we need the proper FPSCR setting when
;; TARGET_FMOVD is in effect, and mode switching is done before reload.
;; Notice that although this pattern allows movi20 and movi20s on non-SH2A,
;; those alternatives will not be taken, as they will be converted into
;; PC-relative loads.
(define_insn "movsi_ie"
  [(set (match_operand:SI 0 "general_movdst_operand"
            "=r,r,  r,  r,  r, r,r,r,mr,<,<,x,l,x,l,y,<,r,y,r,*f, y,*f,y")
        (match_operand:SI 1 "general_movsrc_operand"
            " Q,r,I08,I20,I28,mr,x,l, r,x,l,r,r,>,>,>,y,i,r,y, y,*f,*f,y"))]
  "TARGET_SH1 && TARGET_FPU_ANY
   && ((register_operand (operands[0], SImode)
        && !fpscr_operand (operands[0], SImode))
       || (register_operand (operands[1], SImode)
           && !fpscr_operand (operands[1], SImode)))"
  "@
        mov.l   %1,%0
        mov     %1,%0
        mov     %1,%0
        movi20  %1,%0
        movi20s %1,%0
        mov.l   %1,%0
        sts     %1,%0
        sts     %1,%0
        mov.l   %1,%0
        sts.l   %1,%0
        sts.l   %1,%0
        lds     %1,%0
        lds     %1,%0
        lds.l   %1,%0
        lds.l   %1,%0
        lds.l   %1,%0
        sts.l   %1,%0
        fake    %1,%0
        lds     %1,%0
        sts     %1,%0
        fsts    fpul,%0
        flds    %1,fpul
        fmov    %1,%0
        ! move optimized away"
  [(set_attr "type" "pcload_si,move,movi8,move,move,load_si,mac_gp,prget,store,
                     mac_mem,pstore,gp_mac,prset,mem_mac,pload,load,fstore,
                     pcload_si,gp_fpul,fpul_gp,fmove,fmove,fmove,nil")
   (set_attr "late_fp_use" "*,*,*,*,*,*,*,*,*,*,*,*,*,*,*,*,yes,*,*,yes,*,*,*,*")
   (set_attr_alternative "length"
     [(const_int 2)
      (const_int 2)
      (const_int 2)
      (const_int 4)
      (const_int 4)
      (if_then_else (match_operand 1 "long_displacement_mem_operand")
                    (const_int 4) (const_int 2))
      (const_int 2)
      (const_int 2)
      (if_then_else (match_operand 0 "long_displacement_mem_operand")
                    (const_int 4) (const_int 2))
      (const_int 2)
      (const_int 2)
      (const_int 2)
      (const_int 2)
      (const_int 2)
      (const_int 2)
      (const_int 2)
      (const_int 2)
      (const_int 2)
      (const_int 2)
      (const_int 2)
      (const_int 2)
      (const_int 2)
      (const_int 2)
      (const_int 0)])])

;; Notice that although this pattern allows movi20 and movi20s on non-SH2A,
;; those alternatives will not be taken, as they will be converted into
;; PC-relative loads.
(define_insn "movsi_i_lowpart"
  [(set (strict_low_part
          (match_operand:SI 0 "general_movdst_operand"
                              "+r,r,  r,  r,  r, r,r,r,m,r"))
        (match_operand:SI 1 "general_movsrc_operand"
                              " Q,r,I08,I20,I28,mr,x,l,r,i"))]
  "TARGET_SH1
   && (register_operand (operands[0], SImode)
       || register_operand (operands[1], SImode))"
  "@
        mov.l   %1,%0
        mov     %1,%0
        mov     %1,%0
        movi20  %1,%0
        movi20s %1,%0
        mov.l   %1,%0
        sts     %1,%0
        sts     %1,%0
        mov.l   %1,%0
        fake    %1,%0"
  [(set_attr "type" "pcload,move,movi8,move,move,load,mac_gp,prget,store,
                     pcload")
   (set_attr_alternative "length"
     [(const_int 2)
      (const_int 2)
      (const_int 2)
      (const_int 4)
      (const_int 4)
      (if_then_else (match_operand 1 "long_displacement_mem_operand")
                    (const_int 4) (const_int 2))
      (const_int 2)
      (const_int 2)
      (if_then_else (match_operand 0 "long_displacement_mem_operand")
                    (const_int 4) (const_int 2))
      (const_int 2)])])

(define_insn_and_split "load_ra"
  [(set (match_operand:SI 0 "general_movdst_operand" "")
        (unspec:SI [(match_operand:SI 1 "register_operand" "")] UNSPEC_RA))]
  "TARGET_SH1"
  "#"
  "&& ! currently_expanding_to_rtl"
  [(set (match_dup 0) (match_dup 1))])

(define_expand "movsi"
  [(set (match_operand:SI 0 "general_movdst_operand" "")
        (match_operand:SI 1 "general_movsrc_operand" ""))]
  ""
{
  prepare_move_operands (operands, SImode);
})

(define_expand "ic_invalidate_line"
  [(parallel [(unspec_volatile [(match_operand:SI 0 "register_operand")
                                (match_dup 1)] UNSPEC_ICACHE)
              (clobber (scratch:SI))])]
  "TARGET_HARD_SH4"
{
  emit_insn (gen_ic_invalidate_line_sh4a (operands[0]));
  DONE;
})

;; The address %0 is assumed to be 4-aligned at least.  Thus, by ORing
;; 0xf0000008, we get the low-oder bits *1*00 (binary), which fits
;; the requirement *1*00 for associative address writes.  The alignment of
;; %0 implies that its least significant bit is cleared,
;; thus we clear the V bit of a matching entry if there is one.
(define_insn "ic_invalidate_line_i"
  [(unspec_volatile [(match_operand:SI 0 "register_operand" "r")
                     (match_operand:SI 1 "register_operand" "r")]
                     UNSPEC_ICACHE)
   (clobber (match_scratch:SI 2 "=&r"))]
  "TARGET_HARD_SH4"
{
  return       "ocbwb   @%0"    "\n"
         "      extu.w  %0,%2"  "\n"
         "      or      %1,%2"  "\n"
         "      mov.l   %0,@%2";
}
  [(set_attr "length" "8")
   (set_attr "type" "cwb")])

(define_insn "ic_invalidate_line_sh4a"
  [(unspec_volatile [(match_operand:SI 0 "register_operand" "r")]
                    UNSPEC_ICACHE)]
  "TARGET_SH4A || TARGET_SH4_300"
{
  return       "ocbwb   @%0"    "\n"
         "      synco"          "\n"
         "      icbi    @%0";
}
  [(set_attr "length" "6")
   (set_attr "type" "cwb")])

(define_expand "mov<mode>"
  [(set (match_operand:QIHI 0 "general_movdst_operand")
        (match_operand:QIHI 1 "general_movsrc_operand"))]
  ""
{
 if (can_create_pseudo_p () && CONST_INT_P (operands[1])
    && REG_P (operands[0]) && REGNO (operands[0]) != R0_REG)
    {
        rtx reg = gen_reg_rtx(SImode);
        emit_move_insn (reg, operands[1]);
        operands[1] = gen_lowpart (<MODE>mode, reg);
    }

  prepare_move_operands (operands, <MODE>mode);
})

;; The pre-dec and post-inc mems must be captured by the '<' and '>'
;; constraints, otherwise wrong code might get generated.
(define_insn "*mov<mode>_load_predec"
  [(set (match_operand:QIHISI 0 "arith_reg_dest" "=z")
        (match_operand:QIHISI 1 "pre_dec_mem" "<"))]
  "TARGET_SH2A"
  "mov.<bwl>    %1,%0"
  [(set_attr "type" "load")])

(define_insn "*mov<mode>_store_postinc"
  [(set (match_operand:QIHISI 0 "post_inc_mem" "=>")
        (match_operand:QIHISI 1 "arith_reg_operand" "z"))]
  "TARGET_SH2A"
  "mov.<bwl>    %1,%0"
  [(set_attr "type" "store")])

;; Specifying the displacement addressing load / store patterns separately
;; before the generic movqi / movhi pattern allows controlling the order
;; in which load / store insns are selected in a more fine grained way.
;; FIXME: The non-SH2A and SH2A variants should be combined by adding
;; "enabled" attribute as it is done in other targets.
(define_insn "*mov<mode>_store_mem_disp04"
  [(set (mem:QIHI
          (plus:SI (match_operand:SI 0 "arith_reg_operand" "%r,r")
                   (match_operand:SI 1 "const_int_operand" "<disp04>,N")))
        (match_operand:QIHI 2 "arith_reg_operand" "z,r"))]
  "TARGET_SH1 && sh_legitimate_index_p (<MODE>mode, operands[1], false, true)"
  "@
        mov.<bw>        %2,@(%O1,%0)
        mov.<bw>        %2,@%0"
  [(set_attr "type" "store")])

(define_insn "*mov<mode>_store_mem_disp12"
  [(set (mem:QIHI
          (plus:SI (match_operand:SI 0 "arith_reg_operand" "%r")
                   (match_operand:SI 1 "const_int_operand" "<disp12>")))
        (match_operand:QIHI 2 "arith_reg_operand" "r"))]
  "TARGET_SH2A && sh_legitimate_index_p (<MODE>mode, operands[1], true, true)"
  "mov.<bw>     %2,@(%O1,%0)"
  [(set_attr "type" "store")
   (set_attr "length" "4")])

(define_insn "*mov<mode>_load_mem_disp04"
  [(set (match_operand:QIHI 0 "arith_reg_dest" "=z,r")
        (mem:QIHI
          (plus:SI (match_operand:SI 1 "arith_reg_operand" "%r,r")
                   (match_operand:SI 2 "const_int_operand" "<disp04>,N"))))]
  "TARGET_SH1 && ! TARGET_SH2A
   && sh_legitimate_index_p (<MODE>mode, operands[2], false, true)"
  "@
        mov.<bw>        @(%O2,%1),%0
        mov.<bw>        @%1,%0"
  [(set_attr "type" "load")])

(define_insn "*mov<mode>_load_mem_disp12"
  [(set (match_operand:QIHI 0 "arith_reg_dest" "=z,r,r")
        (mem:QIHI
          (plus:SI
            (match_operand:SI 1 "arith_reg_operand" "%r,r,r")
            (match_operand:SI 2 "const_int_operand" "<disp04>,N,<disp12>"))))]
  "TARGET_SH2A && sh_legitimate_index_p (<MODE>mode, operands[2], true, true)"
  "@
        mov.<bw>        @(%O2,%1),%0
        mov.<bw>        @%1,%0
        mov.<bw>        @(%O2,%1),%0"
  [(set_attr "type" "load")
   (set_attr "length" "2,2,4")])

;; The order of the constraint alternatives is important here.
;; Q/r has to come first, otherwise PC relative loads might wrongly get
;; placed into delay slots.  Since there is no QImode PC relative load, the
;; Q constraint and general_movsrc_operand will reject it for QImode.
;; The Sid/Ssd alternatives should come before Sdd in order to avoid
;; a preference of using r0 als the register operand for addressing modes
;; other than displacement addressing.
;; The Sdd alternatives allow only r0 as register operand, even though on
;; SH2A any register could be allowed by switching to a 32 bit insn.
;; Generally sticking to the r0 is preferrable, since it generates smaller
;; code.  Obvious r0 reloads can then be eliminated with a peephole on SH2A.
(define_insn "*mov<mode>"
  [(set (match_operand:QIHI 0 "general_movdst_operand"
                              "=r,r,r,Sid,^zr,Ssd,r,  Sdd,z,  r,l")
        (match_operand:QIHI 1 "general_movsrc_operand"
                               "Q,r,i,^zr,Sid,r,  Ssd,z,  Sdd,l,r"))]
  "TARGET_SH1
   && (arith_reg_operand (operands[0], <MODE>mode)
       || arith_reg_operand (operands[1], <MODE>mode))"
  "@
        mov.<bw>        %1,%0
        mov     %1,%0
        mov     %1,%0
        mov.<bw>        %1,%0
        mov.<bw>        %1,%0
        mov.<bw>        %1,%0
        mov.<bw>        %1,%0
        mov.<bw>        %1,%0
        mov.<bw>        %1,%0
        sts     %1,%0
        lds     %1,%0"
  [(set_attr "type" "pcload,move,movi8,store,load,store,load,store,load,prget,prset")
   (set (attr "length")
        (cond [(match_operand 0 "long_displacement_mem_operand") (const_int 4)
               (match_operand 1 "long_displacement_mem_operand") (const_int 4)]
              (const_int 2)))])

;; x/r can be created by inlining/cse, e.g. for execute/961213-1.c
;; compiled with -m2 -ml -O3 -funroll-loops
(define_insn "*movdi_i"
  [(set (match_operand:DI 0 "general_movdst_operand" "=r,r,r,m,  r,r,r,*!x")
        (match_operand:DI 1 "general_movsrc_operand" " Q,r,m,r,I08,i,x,  r"))]
  "TARGET_SH1
   && (arith_reg_operand (operands[0], DImode)
       || arith_reg_operand (operands[1], DImode))"
{
  return output_movedouble (insn, operands, DImode);
}
  [(set_attr "type" "pcload,move,load,store,move,pcload,move,move")
   (set (attr "length")
        (cond [(match_operand 0 "long_displacement_mem_operand") (const_int 8)
               (match_operand 1 "long_displacement_mem_operand") (const_int 8)]
              (const_int 4)))])

;; If the output is a register and the input is memory or a register, we have
;; to be careful and see which word needs to be loaded first.
(define_split
  [(set (match_operand:DI 0 "general_movdst_operand" "")
        (match_operand:DI 1 "general_movsrc_operand" ""))]
  "TARGET_SH1 && reload_completed"
  [(set (match_dup 2) (match_dup 3))
   (set (match_dup 4) (match_dup 5))]
{
  int regno;

  if ((MEM_P (operands[0])
       && GET_CODE (XEXP (operands[0], 0)) == PRE_DEC)
      || (MEM_P (operands[1])
          && GET_CODE (XEXP (operands[1], 0)) == POST_INC))
    FAIL;

  switch (GET_CODE (operands[0]))
    {
    case REG:
      regno = REGNO (operands[0]);
      break;
    case SUBREG:
      regno = subreg_regno (operands[0]);
      break;
    case MEM:
      regno = -1;
      break;
    default:
      gcc_unreachable ();
    }

  if (regno == -1 || ! refers_to_regno_p (regno, operands[1]))
    {
      operands[2] = operand_subword (operands[0], 0, 0, DImode);
      operands[3] = operand_subword (operands[1], 0, 0, DImode);
      operands[4] = operand_subword (operands[0], 1, 0, DImode);
      operands[5] = operand_subword (operands[1], 1, 0, DImode);
    }
  else
    {
      operands[2] = operand_subword (operands[0], 1, 0, DImode);
      operands[3] = operand_subword (operands[1], 1, 0, DImode);
      operands[4] = operand_subword (operands[0], 0, 0, DImode);
      operands[5] = operand_subword (operands[1], 0, 0, DImode);
    }

  if (operands[2] == 0 || operands[3] == 0
      || operands[4] == 0 || operands[5] == 0)
    FAIL;
})

(define_expand "movdi"
  [(set (match_operand:DI 0 "general_movdst_operand" "")
        (match_operand:DI 1 "general_movsrc_operand" ""))]
  ""
{
  prepare_move_operands (operands, DImode);

  /* When the dest operand is (R0, R1) register pair, split it to
     two movsi of which dest is R1 and R0 so as to lower R0-register
     pressure on the first movsi.  Apply only for simple source not
     to make complex rtl here.  */
  if (REG_P (operands[0]) && REGNO (operands[0]) == R0_REG
      && REG_P (operands[1]) && REGNO (operands[1]) >= FIRST_PSEUDO_REGISTER)
    {
      emit_insn (gen_movsi (gen_rtx_REG (SImode, R1_REG),
                            gen_rtx_SUBREG (SImode, operands[1], 4)));
      emit_insn (gen_movsi (gen_rtx_REG (SImode, R0_REG),
                            gen_rtx_SUBREG (SImode, operands[1], 0)));
      DONE;
    }
})

;; FIXME: This should be a define_insn_and_split.
(define_insn "movdf_k"
  [(set (match_operand:DF 0 "general_movdst_operand" "=r, r,r,m")
        (match_operand:DF 1 "general_movsrc_operand" " r,FQ,m,r"))]
  "TARGET_SH1
   && (!TARGET_FPU_DOUBLE || reload_completed
       /* ??? We provide some insn so that direct_{load,store}[DFmode] get set */
       || (REG_P (operands[0]) && REGNO (operands[0]) == 3)
       || (REG_P (operands[1]) && REGNO (operands[1]) == 3))
   && (arith_reg_operand (operands[0], DFmode)
       || arith_reg_operand (operands[1], DFmode))"
{
  return output_movedouble (insn, operands, DFmode);
}
  [(set_attr "type" "move,pcload,load,store")
   (set (attr "length")
        (cond [(match_operand 0 "long_displacement_mem_operand") (const_int 8)
               (match_operand 1 "long_displacement_mem_operand") (const_int 8)]
              (const_int 4)))])

;; All alternatives of movdf_i4 are split for ! TARGET_FMOVD.
;; However, the d/F/c/z alternative cannot be split directly; it is converted
;; with special code in machine_dependent_reorg into a load of the R0_REG and
;; the d/m/c/X alternative, which is split later into single-precision
;; instructions.  And when not optimizing, no splits are done before fixing
;; up pcloads, so we need usable length information for that.
;; A DF constant load results in the following worst-case 8 byte sequence:
;;      mova    ...,r0
;;      fmov.s  @r0+,..
;;      fmov.s  @r0,...
;;      add     #-4,r0
(define_insn "movdf_i4"
  [(set (match_operand:DF 0 "general_movdst_operand"
                                "=d,r, d,d,m, r,r,m,!??r,!???d")
        (match_operand:DF 1 "general_movsrc_operand"
                                " d,r, F,m,d,FQ,m,r,   d,    r"))
   (use (reg:SI FPSCR_MODES_REG))
   (clobber (match_scratch:SI 2
                                "=X,X,&z,X,X, X,X,X,   X,    X"))]
  "TARGET_FPU_DOUBLE
   && (arith_reg_operand (operands[0], DFmode)
       || arith_reg_operand (operands[1], DFmode))"
  {
    switch (which_alternative)
    {
    case 0:
      if (TARGET_FMOVD)
        return "fmov    %1,%0";
      else if (REGNO (operands[0]) != REGNO (operands[1]) + 1)
        return         "fmov    %R1,%R0"        "\n"
               "        fmov    %S1,%S0";
      else
        return         "fmov    %S1,%S0"        "\n"
               "        fmov    %R1,%R0";
    case 3:
    case 4:
      return "fmov.d    %1,%0";
    default:
      return "#";
    }
  }
  [(set_attr_alternative "length"
     [(if_then_else (eq_attr "fmovd" "yes") (const_int 2) (const_int 4))
      (const_int 4)
      (if_then_else (eq_attr "fmovd" "yes") (const_int 4) (const_int 8))
      (if_then_else (match_operand 1 "displacement_mem_operand")
                    (if_then_else (eq_attr "fmovd" "yes")
                                  (const_int 4) (const_int 8))
                    (if_then_else (eq_attr "fmovd" "yes")
                                  (const_int 2) (const_int 4)))
      (if_then_else (match_operand 0 "displacement_mem_operand")
                    (if_then_else (eq_attr "fmovd" "yes")
                                  (const_int 4) (const_int 8))
                    (if_then_else (eq_attr "fmovd" "yes")
                                  (const_int 2) (const_int 4)))
      (const_int 4)
      (if_then_else (match_operand 1 "long_displacement_mem_operand")
                    (const_int 8) (const_int 4))
      (if_then_else (match_operand 0 "long_displacement_mem_operand")
                    (const_int 8) (const_int 4))
      (const_int 8)
      (const_int 8)])
   (set_attr "type" "fmove,move,pcfload,fload,fstore,pcload,load,store,load,
                    fload")
   (set_attr "late_fp_use" "*,*,*,*,yes,*,*,*,*,*")
   (set (attr "fp_mode") (if_then_else (eq_attr "fmovd" "yes")
                                           (const_string "double")
                                           (const_string "none")))])

;; Moving DFmode between fp/general registers through memory
;; (the top of the stack) is faster than moving through fpul even for
;; little endian.  Because the type of an instruction is important for its
;; scheduling,  it is beneficial to split these operations, rather than
;; emitting them in one single chunk, even if this will expose a stack
;; use that will prevent scheduling of other stack accesses beyond this
;; instruction.
(define_split
  [(set (match_operand:DF 0 "register_operand")
        (match_operand:DF 1 "register_operand"))
   (use (reg:SI FPSCR_MODES_REG))
   (clobber (match_scratch:SI 2))]
  "TARGET_FPU_DOUBLE && reload_completed
   && (true_regnum (operands[0]) < 16) != (true_regnum (operands[1]) < 16)"
  [(const_int 0)]
{
  rtx insn, tos;

  tos = gen_tmp_stack_mem (DFmode, gen_rtx_PRE_DEC (Pmode, stack_pointer_rtx));
  insn = emit_insn (gen_movdf_i4 (tos, operands[1]));
  add_reg_note (insn, REG_INC, stack_pointer_rtx);
  tos = gen_tmp_stack_mem (DFmode, gen_rtx_POST_INC (Pmode, stack_pointer_rtx));
  insn = emit_insn (gen_movdf_i4 (operands[0], tos));
  add_reg_note (insn, REG_INC, stack_pointer_rtx);
  DONE;
})

;; local-alloc sometimes allocates scratch registers even when not required,
;; so we must be prepared to handle these.

;; Remove the use and clobber from a movdf_i4 so that we can use movdf_k.
(define_split
  [(set (match_operand:DF 0 "general_movdst_operand" "")
        (match_operand:DF 1 "general_movsrc_operand"  ""))
   (use (reg:SI FPSCR_MODES_REG))
   (clobber (match_scratch:SI 2))]
  "TARGET_FPU_DOUBLE
   && reload_completed
   && true_regnum (operands[0]) < 16
   && true_regnum (operands[1]) < 16"
  [(set (match_dup 0) (match_dup 1))]
{
  /* If this was a reg <-> mem operation with base + index reg addressing,
     we have to handle this in a special way.  */
  rtx mem = operands[0];
  int store_p = 1;
  if (! memory_operand (mem, DFmode))
    {
      mem = operands[1];
      store_p = 0;
    }
  if (GET_CODE (mem) == SUBREG && SUBREG_BYTE (mem) == 0)
    mem = SUBREG_REG (mem);
  if (MEM_P (mem))
    {
      rtx addr = XEXP (mem, 0);
      if (GET_CODE (addr) == PLUS
          && REG_P (XEXP (addr, 0))
          && REG_P (XEXP (addr, 1)))
        {
          int offset;
          rtx reg0 = gen_rtx_REG (Pmode, 0);
          rtx regop = operands[store_p], word0 ,word1;

          if (GET_CODE (regop) == SUBREG)
            alter_subreg (&regop, true);
          if (REGNO (XEXP (addr, 0)) == REGNO (XEXP (addr, 1)))
            offset = 2;
          else
            offset = 4;
          mem = copy_rtx (mem);
          PUT_MODE (mem, SImode);
          word0 = gen_rtx_SUBREG (SImode, regop, 0);
          alter_subreg (&word0, true);
          word1 = gen_rtx_SUBREG (SImode, regop, 4);
          alter_subreg (&word1, true);
          if (store_p || ! refers_to_regno_p (REGNO (word0), addr))
            {
              emit_insn (store_p
                         ? gen_movsi_ie (mem, word0)
                         : gen_movsi_ie (word0, mem));
              emit_insn (gen_addsi3 (reg0, reg0, GEN_INT (offset)));
              mem = copy_rtx (mem);
              emit_insn (store_p
                         ? gen_movsi_ie (mem, word1)
                         : gen_movsi_ie (word1, mem));
              emit_insn (gen_addsi3 (reg0, reg0, GEN_INT (-offset)));
            }
          else
            {
              emit_insn (gen_addsi3 (reg0, reg0, GEN_INT (offset)));
              emit_insn (gen_movsi_ie (word1, mem));
              emit_insn (gen_addsi3 (reg0, reg0, GEN_INT (-offset)));
              mem = copy_rtx (mem);
              emit_insn (gen_movsi_ie (word0, mem));
            }
          DONE;
        }
    }
})

;; Split away the clobber of r0 after machine_dependent_reorg has fixed pcloads.
(define_split
  [(set (match_operand:DF 0 "register_operand" "")
        (match_operand:DF 1 "memory_operand"  ""))
   (use (reg:SI FPSCR_MODES_REG))
   (clobber (reg:SI R0_REG))]
  "TARGET_FPU_DOUBLE && reload_completed"
  [(parallel [(set (match_dup 0) (match_dup 1))
              (use (reg:SI FPSCR_MODES_REG))
              (clobber (scratch:SI))])]
  "")

(define_expand "reload_indf__frn"
  [(parallel [(set (match_operand:DF 0 "register_operand" "=a")
                   (match_operand:DF 1 "immediate_operand" "FQ"))
              (use (reg:SI FPSCR_MODES_REG))
              (clobber (match_operand:SI 2 "register_operand" "=&z"))])]
  "TARGET_SH1"
  "")

(define_expand "reload_outdf__RnFRm"
  [(parallel [(set (match_operand:DF 0 "register_operand" "=r,f")
                   (match_operand:DF 1 "register_operand" "af,r"))
              (clobber (match_operand:SI 2 "register_operand" "=&y,y"))])]
  "TARGET_SH1"
  "")

;; Simplify no-op moves.
(define_split
  [(set (match_operand:SF 0 "register_operand" "")
        (match_operand:SF 1 "register_operand" ""))
   (use (reg:SI FPSCR_MODES_REG))
   (clobber (match_scratch:SI 2))]
  "TARGET_SH2E && reload_completed
   && true_regnum (operands[0]) == true_regnum (operands[1])"
  [(set (match_dup 0) (match_dup 0))]
  "")

;; fmovd substitute post-reload splits
(define_split
  [(set (match_operand:DF 0 "register_operand" "")
        (match_operand:DF 1 "register_operand" ""))
   (use (reg:SI FPSCR_MODES_REG))
   (clobber (match_scratch:SI 2))]
  "TARGET_SH4 && ! TARGET_FMOVD && reload_completed
   && FP_OR_XD_REGISTER_P (true_regnum (operands[0]))
   && FP_OR_XD_REGISTER_P (true_regnum (operands[1]))"
  [(const_int 0)]
{
  int dst = true_regnum (operands[0]), src = true_regnum (operands[1]);
  emit_insn (gen_movsf_ie (gen_rtx_REG (SFmode, dst),
                           gen_rtx_REG (SFmode, src)));
  emit_insn (gen_movsf_ie (gen_rtx_REG (SFmode, dst + 1),
                           gen_rtx_REG (SFmode, src + 1)));
  DONE;
})

(define_split
  [(set (match_operand:DF 0 "register_operand" "")
        (mem:DF (match_operand:SI 1 "register_operand" "")))
   (use (reg:SI FPSCR_MODES_REG))
   (clobber (match_scratch:SI 2))]
  "TARGET_FPU_DOUBLE && ! TARGET_FMOVD && reload_completed
   && FP_OR_XD_REGISTER_P (true_regnum (operands[0]))
   && find_regno_note (insn, REG_DEAD, true_regnum (operands[1]))"
  [(const_int 0)]
{
  int regno = true_regnum (operands[0]);
  rtx insn;
  rtx mem = SET_SRC (XVECEXP (PATTERN (curr_insn), 0, 0));
  rtx mem2
    = change_address (mem, SFmode, gen_rtx_POST_INC (Pmode, operands[1]));
  insn = emit_insn (gen_movsf_ie (gen_rtx_REG (SFmode,
                                               regno + SH_REG_MSW_OFFSET),
                                  mem2));
  add_reg_note (insn, REG_INC, operands[1]);
  insn = emit_insn (gen_movsf_ie (gen_rtx_REG (SFmode,
                                               regno + SH_REG_LSW_OFFSET),
                                  change_address (mem, SFmode, NULL_RTX)));
  DONE;
})

(define_split
  [(set (match_operand:DF 0 "register_operand" "")
        (match_operand:DF 1 "memory_operand" ""))
   (use (reg:SI FPSCR_MODES_REG))
   (clobber (match_scratch:SI 2))]
  "TARGET_FPU_DOUBLE && ! TARGET_FMOVD && reload_completed
   && FP_OR_XD_REGISTER_P (true_regnum (operands[0]))"
  [(const_int 0)]
{
  int regno = true_regnum (operands[0]);
  rtx addr, insn;
  rtx mem2 = change_address (operands[1], SFmode, NULL_RTX);
  rtx reg0 = gen_rtx_REG (SFmode, regno + SH_REG_MSW_OFFSET);
  rtx reg1 = gen_rtx_REG (SFmode, regno + SH_REG_LSW_OFFSET);

  operands[1] = copy_rtx (mem2);
  addr = XEXP (mem2, 0);

  switch (GET_CODE (addr))
    {
    case REG:
      /* This is complicated.  If the register is an arithmetic register
         we can just fall through to the REG+DISP case below.  Otherwise
         we have to use a combination of POST_INC and REG addressing...  */
      if (! arith_reg_operand (operands[1], SFmode))
        {
          XEXP (mem2, 0) = addr = gen_rtx_POST_INC (SImode, addr);
          insn = emit_insn (gen_movsf_ie (reg0, mem2));
          add_reg_note (insn, REG_INC, XEXP (addr, 0));
          
          emit_insn (gen_movsf_ie (reg1, operands[1]));

          /* If we have modified the stack pointer, the value that we have
             read with post-increment might be modified by an interrupt,
             so write it back.  */
          if (REGNO (XEXP (addr, 0)) == STACK_POINTER_REGNUM)
            emit_insn (gen_push_e (reg0));
          else
            emit_insn (gen_addsi3 (XEXP (operands[1], 0), XEXP (operands[1], 0),
                                   GEN_INT (-4)));
          break;
        }
      /* Fall through.  */

    case PLUS:
      emit_insn (gen_movsf_ie (reg0, operands[1]));
      operands[1] = copy_rtx (operands[1]);
      XEXP (operands[1], 0) = plus_constant (Pmode, addr, 4);
      emit_insn (gen_movsf_ie (reg1, operands[1]));
      break;

    case POST_INC:
      insn = emit_insn (gen_movsf_ie (reg0, operands[1]));
      add_reg_note (insn, REG_INC, XEXP (addr, 0));

      insn = emit_insn (gen_movsf_ie (reg1, operands[1]));
      add_reg_note (insn, REG_INC, XEXP (addr, 0));
      break;

    default:
      debug_rtx (addr);
      gcc_unreachable ();
    }

  DONE;
})

(define_split
  [(set (match_operand:DF 0 "memory_operand" "")
        (match_operand:DF 1 "register_operand" ""))
   (use (reg:SI FPSCR_MODES_REG))
   (clobber (match_scratch:SI 2))]
  "TARGET_FPU_DOUBLE && ! TARGET_FMOVD && reload_completed
   && FP_OR_XD_REGISTER_P (true_regnum (operands[1]))"
  [(const_int 0)]
{
  int regno = true_regnum (operands[1]);
  rtx insn, addr;
  rtx reg0 = gen_rtx_REG (SFmode, regno + SH_REG_MSW_OFFSET);
  rtx reg1 = gen_rtx_REG (SFmode, regno + SH_REG_LSW_OFFSET);

  operands[0] = copy_rtx (operands[0]);
  PUT_MODE (operands[0], SFmode);
  addr = XEXP (operands[0], 0);

  switch (GET_CODE (addr))
    {
    case REG:
      /* This is complicated.  If the register is an arithmetic register
         we can just fall through to the REG+DISP case below.  Otherwise
         we have to use a combination of REG and PRE_DEC addressing...  */
      if (! arith_reg_operand (operands[0], SFmode))
        {
          emit_insn (gen_addsi3 (addr, addr, GEN_INT (4)));
          emit_insn (gen_movsf_ie (operands[0], reg1));

          operands[0] = copy_rtx (operands[0]);
          XEXP (operands[0], 0) = addr = gen_rtx_PRE_DEC (SImode, addr);
          
          insn = emit_insn (gen_movsf_ie (operands[0], reg0));
          add_reg_note (insn, REG_INC, XEXP (addr, 0));
          break;
        }
      /* Fall through.  */

    case PLUS:
      /* Since REG+DISP addressing has already been decided upon by gcc
         we can rely upon it having chosen an arithmetic register as the
         register component of the address.  Just emit the lower numbered
         register first, to the lower address, then the higher numbered
         register to the higher address.  */
      emit_insn (gen_movsf_ie (operands[0], reg0));

      operands[0] = copy_rtx (operands[0]);
      XEXP (operands[0], 0) = plus_constant (Pmode, addr, 4);

      emit_insn (gen_movsf_ie (operands[0], reg1));
      break;

    case PRE_DEC:
      /* This is easy.  Output the word to go to the higher address
         first (ie the word in the higher numbered register) then the
         word to go to the lower address.  */

      insn = emit_insn (gen_movsf_ie (operands[0], reg1));
      add_reg_note (insn, REG_INC, XEXP (addr, 0));

      insn = emit_insn (gen_movsf_ie (operands[0], reg0));
      add_reg_note (insn, REG_INC, XEXP (addr, 0));
      break;

    default:
      /* FAIL; */
      debug_rtx (addr);
      gcc_unreachable ();
    }

  DONE;
})

;; If the output is a register and the input is memory or a register, we have
;; to be careful and see which word needs to be loaded first.
(define_split
  [(set (match_operand:DF 0 "general_movdst_operand" "")
        (match_operand:DF 1 "general_movsrc_operand" ""))]
  "TARGET_SH1 && reload_completed"
  [(set (match_dup 2) (match_dup 3))
   (set (match_dup 4) (match_dup 5))]
{
  int regno;

  if ((MEM_P (operands[0])
       && GET_CODE (XEXP (operands[0], 0)) == PRE_DEC)
      || (MEM_P (operands[1])
          && GET_CODE (XEXP (operands[1], 0)) == POST_INC))
    FAIL;

  switch (GET_CODE (operands[0]))
    {
    case REG:
      regno = REGNO (operands[0]);
      break;
    case SUBREG:
      regno = subreg_regno (operands[0]);
      break;
    case MEM:
      regno = -1;
      break;
    default:
      gcc_unreachable ();
    }

  if (regno == -1 || ! refers_to_regno_p (regno, operands[1]))
    {
      operands[2] = operand_subword (operands[0], 0, 0, DFmode);
      operands[3] = operand_subword (operands[1], 0, 0, DFmode);
      operands[4] = operand_subword (operands[0], 1, 0, DFmode);
      operands[5] = operand_subword (operands[1], 1, 0, DFmode);
    }
  else
    {
      operands[2] = operand_subword (operands[0], 1, 0, DFmode);
      operands[3] = operand_subword (operands[1], 1, 0, DFmode);
      operands[4] = operand_subword (operands[0], 0, 0, DFmode);
      operands[5] = operand_subword (operands[1], 0, 0, DFmode);
    }

  if (operands[2] == 0 || operands[3] == 0
      || operands[4] == 0 || operands[5] == 0)
    FAIL;
})

(define_expand "movdf"
  [(set (match_operand:DF 0 "general_movdst_operand" "")
        (match_operand:DF 1 "general_movsrc_operand" ""))]
  ""
{
  prepare_move_operands (operands, DFmode);
  if (TARGET_FPU_DOUBLE)
    {
      emit_insn (gen_movdf_i4 (operands[0], operands[1]));
      DONE;
    }
})

;; FIXME Although the movsf_i pattern is not used when there's an FPU,
;; it somehow influences some RA choices also on FPU targets.
;; For non-FPU targets it's actually not needed.
(define_insn "movsf_i"
  [(set (match_operand:SF 0 "general_movdst_operand" "=r,r, r, r,m,l,r")
        (match_operand:SF 1 "general_movsrc_operand"  "r,G,FQ,mr,r,r,l"))]
  "TARGET_SH1
   && (! TARGET_SH2E
       /* ??? We provide some insn so that direct_{load,store}[SFmode] get set */
       || (REG_P (operands[0]) && REGNO (operands[0]) == 3)
       || (REG_P (operands[1]) && REGNO (operands[1]) == 3))
   && (arith_reg_operand (operands[0], SFmode)
       || arith_reg_operand (operands[1], SFmode))"
  "@
        mov     %1,%0
        mov     #0,%0
        mov.l   %1,%0
        mov.l   %1,%0
        mov.l   %1,%0
        lds     %1,%0
        sts     %1,%0"
  [(set_attr "type" "move,move,pcload,load,store,move,move")
   (set_attr_alternative "length"
     [(const_int 2)
      (const_int 2)
      (if_then_else (match_operand 1 "long_displacement_mem_operand")
                    (const_int 4) (const_int 2))
      (if_then_else (match_operand 1 "long_displacement_mem_operand")
                    (const_int 4) (const_int 2))
      (if_then_else (match_operand 0 "long_displacement_mem_operand")
                    (const_int 4) (const_int 2))
      (const_int 2)
      (const_int 2)])])

;; We may not split the ry/yr/XX alternatives to movsi_ie, since
;; update_flow_info would not know where to put REG_EQUAL notes
;; when the destination changes mode.
(define_insn "movsf_ie"
  [(set (match_operand:SF 0 "general_movdst_operand"
                                "=f,r,f,f,fy, f,m, r, r,m,f,y,y,rf,r,y,<,y,y")
        (match_operand:SF 1 "general_movsrc_operand"
                                " f,r,G,H,FQ,mf,f,FQ,mr,r,y,f,>,fr,y,r,y,>,y"))
   (use (reg:SI FPSCR_MODES_REG))
   (clobber (match_scratch:SI 2 "=X,X,X,X,&z, X,X, X, X,X,X,X,X, y,X,X,X,X,X"))]
  "TARGET_SH2E
   && (arith_reg_operand (operands[0], SFmode)
       || fpul_operand (operands[0], SFmode)
       || arith_reg_operand (operands[1], SFmode)
       || fpul_operand (operands[1], SFmode)
       || arith_reg_operand (operands[2], SImode))"
  "@
        fmov    %1,%0
        mov     %1,%0
        fldi0   %0
        fldi1   %0
        #
        fmov.s  %1,%0
        fmov.s  %1,%0
        mov.l   %1,%0
        mov.l   %1,%0
        mov.l   %1,%0
        fsts    fpul,%0
        flds    %1,fpul
        lds.l   %1,%0
        #
        sts     %1,%0
        lds     %1,%0
        sts.l   %1,%0
        lds.l   %1,%0
        ! move optimized away"
  [(set_attr "type" "fmove,move,fmove,fmove,pcfload,fload,fstore,pcload,load,
                     store,fmove,fmove,load,*,fpul_gp,gp_fpul,fstore,load,nil")
   (set_attr "late_fp_use" "*,*,*,*,*,*,yes,*,*,*,*,*,*,*,yes,*,yes,*,*")
   (set_attr_alternative "length"
     [(const_int 2)
      (const_int 2)
      (const_int 2)
      (const_int 2)
      (const_int 4)
      (if_then_else (match_operand 1 "displacement_mem_operand")
                    (const_int 4) (const_int 2))
      (if_then_else (match_operand 0 "displacement_mem_operand")
                    (const_int 4) (const_int 2))
      (const_int 2)
      (if_then_else (match_operand 1 "long_displacement_mem_operand")
                    (const_int 4) (const_int 2))
      (if_then_else (match_operand 0 "long_displacement_mem_operand")
                    (const_int 4) (const_int 2))
      (const_int 2)
      (const_int 2)
      (const_int 2)
      (const_int 4)
      (const_int 2)
      (const_int 2)
      (const_int 2)
      (const_int 2)
      (const_int 0)])
  (set_attr_alternative "fp_mode"
     [(if_then_else (eq_attr "fmovd" "yes")
                    (const_string "single") (const_string "none"))
      (const_string "none")
      (const_string "single")
      (const_string "single")
      (const_string "none")
      (if_then_else (eq_attr "fmovd" "yes")
                    (const_string "single") (const_string "none"))
      (if_then_else (eq_attr "fmovd" "yes")
                    (const_string "single") (const_string "none"))
      (const_string "none")
      (const_string "none")
      (const_string "none")
      (const_string "none")
      (const_string "none")
      (const_string "none")
      (const_string "none")
      (const_string "none")
      (const_string "none")
      (const_string "none")
      (const_string "none")
      (const_string "none")])])

(define_insn_and_split "movsf_ie_ra"
  [(set (match_operand:SF 0 "general_movdst_operand"
                                "=f,r,f,f,fy,f,m, r,r,m,f,y,y,rf,r,y,<,y,y")
        (match_operand:SF 1 "general_movsrc_operand"
                                " f,r,G,H,FQ,m,f,FQ,m,r,y,f,>,fr,y,r,y,>,y"))
   (use (reg:SI FPSCR_MODES_REG))
   (clobber (match_scratch:SF 2 "=r,r,X,X,&z,r,r, X,r,r,r,r,r, y,r,r,r,r,r"))
   (const_int 0)]
  "TARGET_SH2E
   && (arith_reg_operand (operands[0], SFmode)
       || fpul_operand (operands[0], SFmode)
       || arith_reg_operand (operands[1], SFmode)
       || fpul_operand (operands[1], SFmode))"
  "@
        fmov    %1,%0
        mov     %1,%0
        fldi0   %0
        fldi1   %0
        #
        fmov.s  %1,%0
        fmov.s  %1,%0
        mov.l   %1,%0
        mov.l   %1,%0
        mov.l   %1,%0
        fsts    fpul,%0
        flds    %1,fpul
        lds.l   %1,%0
        #
        sts     %1,%0
        lds     %1,%0
        sts.l   %1,%0
        lds.l   %1,%0
        ! move optimized away"
  "reload_completed
   && sh_movsf_ie_ra_split_p (operands[0], operands[1], operands[2])"
  [(const_int 0)]
{
  if (! rtx_equal_p (operands[0], operands[1]))
    {
      emit_insn (gen_movsf_ie (operands[2], operands[1]));
      emit_insn (gen_movsf_ie (operands[0], operands[2]));
    }
}
  [(set_attr "type" "fmove,move,fmove,fmove,pcfload,fload,fstore,pcload,load,
                     store,fmove,fmove,load,*,fpul_gp,gp_fpul,fstore,load,nil")
   (set_attr "late_fp_use" "*,*,*,*,*,*,yes,*,*,*,*,*,*,*,yes,*,yes,*,*")
   (set_attr_alternative "length"
     [(const_int 2)
      (const_int 2)
      (const_int 2)
      (const_int 2)
      (const_int 4)
      (if_then_else (match_operand 1 "displacement_mem_operand")
                    (const_int 4) (const_int 2))
      (if_then_else (match_operand 0 "displacement_mem_operand")
                    (const_int 4) (const_int 2))
      (const_int 2)
      (if_then_else (match_operand 1 "long_displacement_mem_operand")
                    (const_int 4) (const_int 2))
      (if_then_else (match_operand 0 "long_displacement_mem_operand")
                    (const_int 4) (const_int 2))
      (const_int 2)
      (const_int 2)
      (const_int 2)
      (const_int 4)
      (const_int 2)
      (const_int 2)
      (const_int 2)
      (const_int 2)
      (const_int 0)])
  (set_attr_alternative "fp_mode"
     [(if_then_else (eq_attr "fmovd" "yes")
                    (const_string "single") (const_string "none"))
      (const_string "none")
      (const_string "single")
      (const_string "single")
      (const_string "none")
      (if_then_else (eq_attr "fmovd" "yes")
                    (const_string "single") (const_string "none"))
      (if_then_else (eq_attr "fmovd" "yes")
                    (const_string "single") (const_string "none"))
      (const_string "none")
      (const_string "none")
      (const_string "none")
      (const_string "none")
      (const_string "none")
      (const_string "none")
      (const_string "none")
      (const_string "none")
      (const_string "none")
      (const_string "none")
      (const_string "none")
      (const_string "none")])])

(define_split
  [(set (match_operand:SF 0 "register_operand" "")
        (match_operand:SF 1 "register_operand" ""))
   (use (reg:SI FPSCR_MODES_REG))
   (clobber (reg:SI FPUL_REG))]
  "TARGET_SH1"
  [(parallel [(set (reg:SF FPUL_REG) (match_dup 1))
              (use (reg:SI FPSCR_MODES_REG))
              (clobber (scratch:SI))])
   (parallel [(set (match_dup 0) (reg:SF FPUL_REG))
              (use (reg:SI FPSCR_MODES_REG))
              (clobber (scratch:SI))])]
  "")

(define_expand "movsf"
  [(set (match_operand:SF 0 "general_movdst_operand" "")
        (match_operand:SF 1 "general_movsrc_operand" ""))]
  ""
{
  prepare_move_operands (operands, SFmode);
  if (TARGET_SH2E)
    {
      if (lra_in_progress)
        {
          if (GET_CODE (operands[0]) == SCRATCH)
            DONE;
          emit_insn (gen_movsf_ie_ra (operands[0], operands[1]));
          DONE;
        }

      emit_insn (gen_movsf_ie (operands[0], operands[1]));
      DONE;
    }
})

(define_expand "reload_insf__frn"
  [(parallel [(set (match_operand:SF 0 "register_operand" "=a")
                   (match_operand:SF 1 "immediate_operand" "FQ"))
              (use (reg:SI FPSCR_MODES_REG))
              (clobber (match_operand:SI 2 "register_operand" "=&z"))])]
  "TARGET_SH1"
  "")

(define_expand "reload_insi__i_fpul"
  [(parallel [(set (match_operand:SI 0 "fpul_operand" "=y")
                   (match_operand:SI 1 "immediate_operand" "i"))
              (clobber (match_operand:SI 2 "register_operand" "=&z"))])]
  "TARGET_SH1"
  "")

(define_insn "*movsi_y"
  [(set (match_operand:SI 0 "register_operand" "=y,y")
        (match_operand:SI 1 "immediate_operand" "Qi,I08"))
   (clobber (match_scratch:SI 2 "=&z,r"))]
  "TARGET_SH2E
   && (reload_in_progress || reload_completed)"
  "#"
  [(set_attr "length" "4")
   (set_attr "type" "pcload,move")])

(define_split
  [(set (match_operand:SI 0 "register_operand" "")
        (match_operand:SI 1 "immediate_operand" ""))
   (clobber (match_operand:SI 2 "register_operand" ""))]
  "TARGET_SH1"
  [(set (match_dup 2) (match_dup 1))
   (set (match_dup 0) (match_dup 2))]
  "")
\f
;; ------------------------------------------------------------------------
;; Define the real conditional branch instructions.
;; ------------------------------------------------------------------------

(define_expand "branch_true"
  [(set (pc) (if_then_else (ne (reg:SI T_REG) (const_int 0))
                           (label_ref (match_operand 0))
                           (pc)))]
  "TARGET_SH1")

(define_expand "branch_false"
  [(set (pc) (if_then_else (eq (reg:SI T_REG) (const_int 0))
                           (label_ref (match_operand 0))
                           (pc)))]
  "TARGET_SH1")

(define_insn_and_split "*cbranch_t"
  [(set (pc) (if_then_else (match_operand 1 "cbranch_treg_value")
                           (label_ref (match_operand 0))
                           (pc)))]
  "TARGET_SH1"
{
  return output_branch (sh_eval_treg_value (operands[1]), insn, operands);
}
  "&& 1"
  [(const_int 0)]
{
  /* Try to canonicalize the branch condition if it is not one of:
        (ne (reg:SI T_REG) (const_int 0))
        (eq (reg:SI T_REG) (const_int 0))

     Instead of splitting out a new insn, we modify the current insn's
     operands as needed.  This preserves things such as REG_DEAD notes.  */

  if ((GET_CODE (operands[1]) == EQ || GET_CODE (operands[1]) == NE)
      && REG_P (XEXP (operands[1], 0)) && REGNO (XEXP (operands[1], 0)) == T_REG
      && XEXP (operands[1], 1) == const0_rtx)
    DONE;

  int branch_cond = sh_eval_treg_value (operands[1]);
  rtx new_cond_rtx = NULL_RTX;

  if (branch_cond == 0)
    new_cond_rtx = gen_rtx_EQ (VOIDmode, get_t_reg_rtx (), const0_rtx);
  else if (branch_cond == 1)
    new_cond_rtx = gen_rtx_NE (VOIDmode, get_t_reg_rtx (), const0_rtx);

  if (new_cond_rtx != NULL_RTX)
    validate_change (curr_insn, &XEXP (XEXP (PATTERN (curr_insn), 1), 0),
                     new_cond_rtx, false);
  DONE;
}
  [(set_attr "type" "cbranch")])

;; Patterns to prevent reorg from re-combining a condbranch with a branch
;; which destination is too far away.
;; The const_int_operand is distinct for each branch target; it avoids
;; unwanted matches with redundant_insn.
(define_insn "block_branch_redirect"
  [(set (pc) (unspec [(match_operand 0 "const_int_operand" "")] UNSPEC_BBR))]
  "TARGET_SH1"
  ""
  [(set_attr "length" "0")])

;; This one has the additional purpose to record a possible scratch register
;; for the following branch.
;; ??? Unfortunately, just setting the scratch register is not good enough,
;; because the insn then might be deemed dead and deleted.  And we can't
;; make the use in the jump insn explicit because that would disable
;; delay slot scheduling from the target.
(define_insn "indirect_jump_scratch"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (unspec:SI [(match_operand 1 "const_int_operand" "")] UNSPEC_BBR))
   (set (pc) (unspec [(const_int 0)] UNSPEC_BBR))]
  "TARGET_SH1"
  ""
  [(set_attr "length" "0")])

;; This one is used to preemt an insn from beyond the bra / braf / jmp
;; being pulled into the delay slot of a condbranch that has been made to
;; jump around the unconditional jump because it was out of range.
(define_insn "stuff_delay_slot"
  [(set (pc)
        (unspec [(match_operand:SI 0 "const_int_operand" "") (pc)
                 (match_operand:SI 1 "const_int_operand" "")] UNSPEC_BBR))]
  "TARGET_SH1"
  ""
  [(set_attr "length" "0")
   (set_attr "cond_delay_slot" "yes")])
\f
;; Conditional branch insns

; operand 0 is the loop count pseudo register
; operand 1 is the label to jump to at the top of the loop
(define_expand "doloop_end"
  [(parallel [(set (pc)
                   (if_then_else (ne:SI (match_operand:SI 0 "" "")
                                        (const_int 1))
                                 (label_ref (match_operand 1 "" ""))
                                 (pc)))
              (set (match_dup 0)
                   (plus:SI (match_dup 0) (const_int -1)))
              (clobber (reg:SI T_REG))])]
  "TARGET_SH2"
{
  if (GET_MODE (operands[0]) != SImode)
    FAIL;
  emit_jump_insn (gen_doloop_end_split (operands[0], operands[1], operands[0]));
  DONE;
})

(define_insn_and_split "doloop_end_split"
  [(set (pc)
        (if_then_else (ne:SI (match_operand:SI 2 "arith_reg_dest" "0")
                             (const_int 1))
                      (label_ref (match_operand 1 "" ""))
                      (pc)))
   (set (match_operand:SI 0 "arith_reg_dest" "=r")
        (plus:SI (match_dup 2) (const_int -1)))
   (clobber (reg:SI T_REG))]
  "TARGET_SH2"
  "#"
  ""
  [(parallel [(set (reg:SI T_REG)
                   (eq:SI (match_dup 2) (const_int 1)))
              (set (match_dup 0) (plus:SI (match_dup 2) (const_int -1)))])
   (set (pc) (if_then_else (eq (reg:SI T_REG) (const_int 0))
                           (label_ref (match_dup 1))
                           (pc)))]
  ""
  [(set_attr "type" "cbranch")])
\f
;; ------------------------------------------------------------------------
;; Jump and linkage insns
;; ------------------------------------------------------------------------

(define_insn "jump_compact"
  [(set (pc)
        (label_ref (match_operand 0 "" "")))]
  "TARGET_SH1 && !CROSSING_JUMP_P (insn)"
{
  /* The length is 16 if the delay slot is unfilled.  */
  if (get_attr_length(insn) > 4)
    return output_far_jump(insn, operands[0]);
  else
    return "bra %l0%#";
}
  [(set_attr "type" "jump")
   (set_attr "needs_delay_slot" "yes")])

(define_insn "*jump_compact_crossing"
  [(set (pc)
        (label_ref (match_operand 0 "" "")))]
  "TARGET_SH1
   && flag_reorder_blocks_and_partition
   && CROSSING_JUMP_P (insn)"
{
  /* The length is 16 if the delay slot is unfilled.  */
  return output_far_jump(insn, operands[0]);
}
  [(set_attr "type" "jump")
   (set_attr "length" "16")])

(define_expand "jump"
  [(set (pc)
        (label_ref (match_operand 0 "" "")))]
  ""
{
  emit_jump_insn (gen_jump_compact (operands[0]));
  DONE;
})

(define_insn "calli"
  [(call (mem:SI (match_operand:SI 0 "arith_reg_operand" "r"))
         (match_operand 1 "" ""))
   (use (reg:SI FPSCR_MODES_REG))
   (clobber (reg:SI PR_REG))]
  "TARGET_SH1 && !TARGET_FDPIC"
{
  if (TARGET_SH2A && dbr_sequence_length () == 0)
    return "jsr/n       @%0";
  else
    return "jsr @%0%#";
}
  [(set_attr "type" "call")
   (set (attr "fp_mode")
        (if_then_else (eq_attr "fpu_single" "yes")
                      (const_string "single") (const_string "double")))
   (set_attr "needs_delay_slot" "yes")
   (set_attr "fp_set" "unknown")])

(define_insn "calli_fdpic"
  [(call (mem:SI (match_operand:SI 0 "arith_reg_operand" "r"))
         (match_operand 1))
   (use (reg:SI FPSCR_MODES_REG))
   (use (reg:SI PIC_REG))
   (clobber (reg:SI PR_REG))]
  "TARGET_FDPIC"
{
  if (TARGET_SH2A && dbr_sequence_length () == 0)
    return "jsr/n       @%0";
  else
    return "jsr @%0%#";
}
  [(set_attr "type" "call")
   (set (attr "fp_mode")
        (if_then_else (eq_attr "fpu_single" "yes")
                      (const_string "single") (const_string "double")))
   (set_attr "needs_delay_slot" "yes")
   (set_attr "fp_set" "unknown")])

;; This is TBR relative jump instruction for SH2A architecture.
;; Its use is enabled by assigning an attribute "function_vector"
;; and the vector number to a function during its declaration.
(define_insn "calli_tbr_rel"
  [(call (mem (match_operand:SI 0 "symbol_ref_operand" ""))
         (match_operand 1 "" ""))
   (use (reg:SI FPSCR_MODES_REG))
   (clobber (reg:SI PR_REG))]
  "TARGET_SH2A && sh2a_is_function_vector_call (operands[0])"
{
  unsigned HOST_WIDE_INT vect_num;
  vect_num = sh2a_get_function_vector_number (operands[0]);
  operands[2] = GEN_INT (vect_num * 4);

  return "jsr/n @@(%O2,tbr)";
}
  [(set_attr "type" "call")
   (set (attr "fp_mode")
        (if_then_else (eq_attr "fpu_single" "yes")
                      (const_string "single") (const_string "double")))
   (set_attr "needs_delay_slot" "no")
   (set_attr "fp_set" "unknown")])

;; This is a pc-rel call, using bsrf, for use with PIC.
(define_insn "calli_pcrel"
  [(call (mem:SI (match_operand:SI 0 "arith_reg_operand" "r"))
         (match_operand 1 "" ""))
   (use (reg:SI FPSCR_MODES_REG))
   (use (reg:SI PIC_REG))
   (use (match_operand 2 "" ""))
   (clobber (reg:SI PR_REG))]
  "TARGET_SH2"
{
  return       "bsrf    %0"     "\n"
         "%O2:%#";
}
  [(set_attr "type" "call")
   (set (attr "fp_mode")
        (if_then_else (eq_attr "fpu_single" "yes")
                      (const_string "single") (const_string "double")))
   (set_attr "needs_delay_slot" "yes")
   (set_attr "fp_set" "unknown")])

(define_insn_and_split "call_pcrel"
  [(call (mem:SI (match_operand:SI 0 "symbol_ref_operand" ""))
         (match_operand 1 "" ""))
   (use (reg:SI FPSCR_MODES_REG))
   (use (reg:SI PIC_REG))
   (clobber (reg:SI PR_REG))
   (clobber (match_scratch:SI 2 "=&r"))]
  "TARGET_SH2"
  "#"
  "reload_completed"
  [(const_int 0)]
{
  rtx lab = PATTERN (gen_call_site ());
  
  sh_expand_sym_label2reg (operands[2], operands[0], lab, false);
  emit_call_insn (gen_calli_pcrel (operands[2], operands[1], copy_rtx (lab)));
  DONE;
}
  [(set_attr "type" "call")
   (set (attr "fp_mode")
        (if_then_else (eq_attr "fpu_single" "yes")
                      (const_string "single") (const_string "double")))
   (set_attr "needs_delay_slot" "yes")
   (set_attr "fp_set" "unknown")])

(define_insn "call_valuei"
  [(set (match_operand 0 "" "=rf")
        (call (mem:SI (match_operand:SI 1 "arith_reg_operand" "r"))
              (match_operand 2 "" "")))
   (use (reg:SI FPSCR_MODES_REG))
   (clobber (reg:SI PR_REG))]
  "TARGET_SH1 && !TARGET_FDPIC"
{
  if (TARGET_SH2A && dbr_sequence_length () == 0)
    return "jsr/n       @%1";
  else
    return "jsr @%1%#";
}
  [(set_attr "type" "call")
   (set (attr "fp_mode")
        (if_then_else (eq_attr "fpu_single" "yes")
                      (const_string "single") (const_string "double")))
   (set_attr "needs_delay_slot" "yes")
   (set_attr "fp_set" "unknown")])

(define_insn "call_valuei_fdpic"
  [(set (match_operand 0 "" "=rf")
        (call (mem:SI (match_operand:SI 1 "arith_reg_operand" "r"))
              (match_operand 2)))
   (use (reg:SI FPSCR_REG))
   (use (reg:SI PIC_REG))
   (clobber (reg:SI PR_REG))]
  "TARGET_FDPIC"
{
  if (TARGET_SH2A && dbr_sequence_length () == 0)
    return "jsr/n       @%1";
  else
    return "jsr @%1%#";
}
  [(set_attr "type" "call")
   (set (attr "fp_mode")
        (if_then_else (eq_attr "fpu_single" "yes")
                      (const_string "single") (const_string "double")))
   (set_attr "needs_delay_slot" "yes")
   (set_attr "fp_set" "unknown")])

;; This is TBR relative jump instruction for SH2A architecture.
;; Its use is enabled by assigning an attribute "function_vector"
;; and the vector number to a function during its declaration.
(define_insn "call_valuei_tbr_rel"
  [(set (match_operand 0 "" "=rf")
        (call (mem:SI (match_operand:SI 1 "symbol_ref_operand" ""))
              (match_operand 2 "" "")))
   (use (reg:SI FPSCR_MODES_REG))
   (clobber (reg:SI PR_REG))]
  "TARGET_SH2A && sh2a_is_function_vector_call (operands[1])"
{
  unsigned HOST_WIDE_INT vect_num;
  vect_num = sh2a_get_function_vector_number (operands[1]);
  operands[3] = GEN_INT (vect_num * 4);

  return "jsr/n @@(%O3,tbr)";
}
  [(set_attr "type" "call")
   (set (attr "fp_mode")
        (if_then_else (eq_attr "fpu_single" "yes")
                      (const_string "single") (const_string "double")))
   (set_attr "needs_delay_slot" "no")
   (set_attr "fp_set" "unknown")])

(define_insn "call_valuei_pcrel"
  [(set (match_operand 0 "" "=rf")
        (call (mem:SI (match_operand:SI 1 "arith_reg_operand" "r"))
              (match_operand 2 "" "")))
   (use (reg:SI FPSCR_MODES_REG))
   (use (reg:SI PIC_REG))
   (use (match_operand 3 "" ""))
   (clobber (reg:SI PR_REG))]
  "TARGET_SH2"
{
  return       "bsrf    %1"     "\n"
         "%O3:%#";
}
  [(set_attr "type" "call")
   (set (attr "fp_mode")
        (if_then_else (eq_attr "fpu_single" "yes")
                      (const_string "single") (const_string "double")))
   (set_attr "needs_delay_slot" "yes")
   (set_attr "fp_set" "unknown")])

(define_insn_and_split "call_value_pcrel"
  [(set (match_operand 0 "" "=rf")
        (call (mem:SI (match_operand:SI 1 "symbol_ref_operand" ""))
              (match_operand 2 "" "")))
   (use (reg:SI FPSCR_MODES_REG))
   (use (reg:SI PIC_REG))
   (clobber (reg:SI PR_REG))
   (clobber (match_scratch:SI 3 "=&r"))]
  "TARGET_SH2"
  "#"
  "reload_completed"
  [(const_int 0)]
{
  rtx lab = PATTERN (gen_call_site ());

  sh_expand_sym_label2reg (operands[3], operands[1], lab, false);
  emit_call_insn (gen_call_valuei_pcrel (operands[0], operands[3],
                                         operands[2], copy_rtx (lab)));
  DONE;
}
  [(set_attr "type" "call")
   (set (attr "fp_mode")
        (if_then_else (eq_attr "fpu_single" "yes")
                      (const_string "single") (const_string "double")))
   (set_attr "needs_delay_slot" "yes")
   (set_attr "fp_set" "unknown")])

(define_expand "call"
  [(parallel [(call (mem:SI (match_operand 0 "arith_reg_operand" ""))
                            (match_operand 1 "" ""))
              (match_operand 2 "" "")
              (use (reg:SI FPSCR_MODES_REG))
              (clobber (reg:SI PR_REG))])]
  ""
{
  if (TARGET_FDPIC)
    {
      rtx pic_reg = gen_rtx_REG (Pmode, PIC_REG);
      emit_move_insn (pic_reg, sh_get_fdpic_reg_initial_val ());
    }

  if (!flag_pic && TARGET_SH2A
      && MEM_P (operands[0])
      && GET_CODE (XEXP (operands[0], 0)) == SYMBOL_REF)
    {
      if (sh2a_is_function_vector_call (XEXP (operands[0], 0)))
        {
          emit_call_insn (gen_calli_tbr_rel (XEXP (operands[0], 0),
                                             operands[1]));
          DONE;
        }
    }
  if (flag_pic && TARGET_SH2
      && MEM_P (operands[0])
      && GET_CODE (XEXP (operands[0], 0)) == SYMBOL_REF)
    {
      emit_call_insn (gen_call_pcrel (XEXP (operands[0], 0), operands[1]));
      DONE;
    }
  else
  {
    operands[0] = force_reg (SImode, XEXP (operands[0], 0));
    operands[1] = operands[2];
  }

  if (TARGET_FDPIC)
    {
      operands[0] = sh_load_function_descriptor (operands[0]);
      emit_call_insn (gen_calli_fdpic (operands[0], operands[1]));
    }
  else
    emit_call_insn (gen_calli (operands[0], operands[1]));
  DONE;
})

(define_expand "call_value"
  [(parallel [(set (match_operand 0 "arith_reg_operand" "")
                   (call (mem:SI (match_operand 1 "arith_reg_operand" ""))
                                 (match_operand 2 "" "")))
              (match_operand 3 "" "")
              (use (reg:SI FPSCR_MODES_REG))
              (clobber (reg:SI PR_REG))])]
  ""
{
  if (TARGET_FDPIC)
    {
      rtx pic_reg = gen_rtx_REG (Pmode, PIC_REG);
      emit_move_insn (pic_reg, sh_get_fdpic_reg_initial_val ());
    }

  if (!flag_pic && TARGET_SH2A
      && MEM_P (operands[1])
      && GET_CODE (XEXP (operands[1], 0)) == SYMBOL_REF)
    {
      if (sh2a_is_function_vector_call (XEXP (operands[1], 0)))
        {
          emit_call_insn (gen_call_valuei_tbr_rel (operands[0],
                                 XEXP (operands[1], 0), operands[2]));
          DONE;
        }
    }
  if (flag_pic && TARGET_SH2
      && MEM_P (operands[1])
      && GET_CODE (XEXP (operands[1], 0)) == SYMBOL_REF)
    {
      emit_call_insn (gen_call_value_pcrel (operands[0], XEXP (operands[1], 0),
                                            operands[2]));
      DONE;
    }
  else
    operands[1] = force_reg (SImode, XEXP (operands[1], 0));

  if (TARGET_FDPIC)
    {
      operands[1] = sh_load_function_descriptor (operands[1]);
      emit_call_insn (gen_call_valuei_fdpic (operands[0], operands[1],
                                             operands[2]));
    }
  else
    emit_call_insn (gen_call_valuei (operands[0], operands[1], operands[2]));
  DONE;
})

(define_insn "sibcalli"
  [(call (mem:SI (match_operand:SI 0 "register_operand" "k"))
         (match_operand 1 "" ""))
   (use (reg:SI FPSCR_MODES_REG))
   (return)]
  "TARGET_SH1 && !TARGET_FDPIC"
  "jmp  @%0%#"
  [(set_attr "needs_delay_slot" "yes")
   (set (attr "fp_mode")
        (if_then_else (eq_attr "fpu_single" "yes")
                      (const_string "single") (const_string "double")))
   (set_attr "type" "jump_ind")])

(define_insn "sibcalli_fdpic"
  [(call (mem:SI (match_operand:SI 0 "register_operand" "k"))
         (match_operand 1))
   (use (reg:SI FPSCR_MODES_REG))
   (use (reg:SI PIC_REG))
   (return)]
  "TARGET_FDPIC"
  "jmp  @%0%#"
  [(set_attr "needs_delay_slot" "yes")
   (set (attr "fp_mode")
        (if_then_else (eq_attr "fpu_single" "yes")
                      (const_string "single") (const_string "double")))
   (set_attr "type" "jump_ind")])

(define_insn "sibcalli_pcrel"
  [(call (mem:SI (match_operand:SI 0 "arith_reg_operand" "k"))
         (match_operand 1 "" ""))
   (use (match_operand 2 "" ""))
   (use (reg:SI FPSCR_MODES_REG))
   (return)]
  "TARGET_SH2 && !TARGET_FDPIC"
{
  return       "braf    %0"     "\n"
         "%O2:%#";
}
  [(set_attr "needs_delay_slot" "yes")
   (set (attr "fp_mode")
        (if_then_else (eq_attr "fpu_single" "yes")
                      (const_string "single") (const_string "double")))
   (set_attr "type" "jump_ind")])

(define_insn "sibcalli_pcrel_fdpic"
  [(call (mem:SI (match_operand:SI 0 "arith_reg_operand" "k"))
         (match_operand 1))
   (use (match_operand 2))
   (use (reg:SI FPSCR_MODES_REG))
   (use (reg:SI PIC_REG))
   (return)]
  "TARGET_SH2 && TARGET_FDPIC"
{
  return       "braf    %0"     "\n"
         "%O2:%#";
}
  [(set_attr "needs_delay_slot" "yes")
   (set (attr "fp_mode")
        (if_then_else (eq_attr "fpu_single" "yes")
                      (const_string "single") (const_string "double")))
   (set_attr "type" "jump_ind")])

;; This uses an unspec to describe that the symbol_ref is very close.
(define_insn "sibcalli_thunk"
  [(call (mem:SI (unspec:SI [(match_operand:SI 0 "symbol_ref_operand" "")]
                             UNSPEC_THUNK))
         (match_operand 1 "" ""))
   (use (reg:SI FPSCR_MODES_REG))
   (return)]
  "TARGET_SH1"
  "bra  %O0"
  [(set_attr "needs_delay_slot" "yes")
   (set (attr "fp_mode")
        (if_then_else (eq_attr "fpu_single" "yes")
                      (const_string "single") (const_string "double")))
   (set_attr "type" "jump")
   (set_attr "length" "2")])

(define_insn_and_split "sibcall_pcrel"
  [(call (mem:SI (match_operand:SI 0 "symbol_ref_operand" ""))
         (match_operand 1 "" ""))
   (use (reg:SI FPSCR_MODES_REG))
   (clobber (match_scratch:SI 2 "=&k"))
   (return)]
  "TARGET_SH2 && !TARGET_FDPIC"
  "#"
  "reload_completed"
  [(const_int 0)]
{
  rtx lab = PATTERN (gen_call_site ());
  rtx call_insn;

  sh_expand_sym_label2reg (operands[2], operands[0], lab, true);
  call_insn = emit_call_insn (gen_sibcalli_pcrel (operands[2], operands[1],
                                                  copy_rtx (lab)));
  SIBLING_CALL_P (call_insn) = 1;
  DONE;
}
  [(set_attr "needs_delay_slot" "yes")
   (set (attr "fp_mode")
        (if_then_else (eq_attr "fpu_single" "yes")
                      (const_string "single") (const_string "double")))
   (set_attr "type" "jump_ind")])

(define_insn_and_split "sibcall_pcrel_fdpic"
  [(call (mem:SI (match_operand:SI 0 "symbol_ref_operand"))
         (match_operand 1))
   (use (reg:SI FPSCR_MODES_REG))
   (use (reg:SI PIC_REG))
   (clobber (match_scratch:SI 2 "=k"))
   (return)]
  "TARGET_SH2 && TARGET_FDPIC"
  "#"
  "&& reload_completed"
  [(const_int 0)]
{
  rtx lab = PATTERN (gen_call_site ());

  sh_expand_sym_label2reg (operands[2], operands[0], lab, true);
  rtx i = emit_call_insn (gen_sibcalli_pcrel_fdpic (operands[2], operands[1],
                                                    copy_rtx (lab)));
  SIBLING_CALL_P (i) = 1;
  DONE;
}
  [(set_attr "needs_delay_slot" "yes")
   (set (attr "fp_mode")
        (if_then_else (eq_attr "fpu_single" "yes")
                      (const_string "single") (const_string "double")))
   (set_attr "type" "jump_ind")])

(define_expand "sibcall"
  [(parallel
    [(call (mem:SI (match_operand 0 "arith_reg_operand" ""))
           (match_operand 1 "" ""))
     (match_operand 2 "" "")
   (use (reg:SI FPSCR_MODES_REG))
     (return)])]
  ""
{
  if (TARGET_FDPIC)
    {
      rtx pic_reg = gen_rtx_REG (Pmode, PIC_REG);
      emit_move_insn (pic_reg, sh_get_fdpic_reg_initial_val ());
    }

  if (flag_pic && TARGET_SH2
      && MEM_P (operands[0])
      && GET_CODE (XEXP (operands[0], 0)) == SYMBOL_REF
      /* The PLT needs the PIC register, but the epilogue would have
         to restore it, so we can only use PC-relative PIC calls for
         static functions.  */
      && SYMBOL_REF_LOCAL_P (XEXP (operands[0], 0)))
    {
      if (TARGET_FDPIC)
        emit_call_insn (gen_sibcall_pcrel_fdpic (XEXP (operands[0], 0),
                                                 operands[1]));
      else
        emit_call_insn (gen_sibcall_pcrel (XEXP (operands[0], 0), operands[1]));
      DONE;
    }
  else
    operands[0] = force_reg (SImode, XEXP (operands[0], 0));

  if (TARGET_FDPIC)
    {
      operands[0] = sh_load_function_descriptor (operands[0]);
      emit_call_insn (gen_sibcalli_fdpic (operands[0], operands[1]));
    }
  else
    emit_call_insn (gen_sibcalli (operands[0], operands[1]));
  DONE;
})

(define_insn "sibcall_valuei"
  [(set (match_operand 0 "" "=rf")
        (call (mem:SI (match_operand:SI 1 "register_operand" "k"))
              (match_operand 2 "" "")))
   (use (reg:SI FPSCR_MODES_REG))
   (return)]
  "TARGET_SH1 && !TARGET_FDPIC"
  "jmp  @%1%#"
  [(set_attr "needs_delay_slot" "yes")
   (set (attr "fp_mode")
       (if_then_else (eq_attr "fpu_single" "yes")
                     (const_string "single") (const_string "double")))
   (set_attr "type" "jump_ind")])

(define_insn "sibcall_valuei_fdpic"
  [(set (match_operand 0 "" "=rf")
        (call (mem:SI (match_operand:SI 1 "register_operand" "k"))
              (match_operand 2)))
   (use (reg:SI FPSCR_MODES_REG))
   (use (reg:SI PIC_REG))
   (return)]
  "TARGET_FDPIC"
  "jmp  @%1%#"
  [(set_attr "needs_delay_slot" "yes")
   (set (attr "fp_mode")
        (if_then_else (eq_attr "fpu_single" "yes")
                      (const_string "single") (const_string "double")))
   (set_attr "type" "jump_ind")])

(define_insn "sibcall_valuei_pcrel"
  [(set (match_operand 0 "" "=rf")
        (call (mem:SI (match_operand:SI 1 "arith_reg_operand" "k"))
              (match_operand 2 "" "")))
   (use (match_operand 3 "" ""))
   (use (reg:SI FPSCR_MODES_REG))
   (return)]
  "TARGET_SH2 && !TARGET_FDPIC"
{
  return       "braf    %1"     "\n"
         "%O3:%#";
}
  [(set_attr "needs_delay_slot" "yes")
   (set (attr "fp_mode")
        (if_then_else (eq_attr "fpu_single" "yes")
                      (const_string "single") (const_string "double")))
   (set_attr "type" "jump_ind")])

(define_insn "sibcall_valuei_pcrel_fdpic"
  [(set (match_operand 0 "" "=rf")
        (call (mem:SI (match_operand:SI 1 "arith_reg_operand" "k"))
              (match_operand 2)))
   (use (match_operand 3))
   (use (reg:SI FPSCR_MODES_REG))
   (use (reg:SI PIC_REG))
   (return)]
  "TARGET_SH2 && TARGET_FDPIC"
{
  return       "braf    %1"     "\n"
         "%O3:%#";
}
  [(set_attr "needs_delay_slot" "yes")
   (set (attr "fp_mode")
        (if_then_else (eq_attr "fpu_single" "yes")
                      (const_string "single") (const_string "double")))
   (set_attr "type" "jump_ind")])

;; sibcall_value_pcrel used to have a =&k clobber for the scratch register
;; that it needs for the branch address.  This causes troubles when there
;; is a big overlap of argument and return value registers.  Hence, use a
;; fixed call clobbered register for the address.  See also PR 67260.
(define_insn_and_split "sibcall_value_pcrel"
  [(set (match_operand 0 "" "=rf")
        (call (mem:SI (match_operand:SI 1 "symbol_ref_operand" ""))
              (match_operand 2 "" "")))
   (use (reg:SI FPSCR_MODES_REG))
   (clobber (reg:SI R1_REG))
   (return)]
  "TARGET_SH2 && !TARGET_FDPIC"
  "#"
  "reload_completed"
  [(const_int 0)]
{
  rtx lab = PATTERN (gen_call_site ());
  rtx call_insn;

  operands[3] =  gen_rtx_REG (SImode, R1_REG);

  sh_expand_sym_label2reg (operands[3], operands[1], lab, true);
  call_insn = emit_call_insn (gen_sibcall_valuei_pcrel (operands[0],
                                                        operands[3],
                                                        operands[2],
                                                        copy_rtx (lab)));
  SIBLING_CALL_P (call_insn) = 1;
  DONE;
}
  [(set_attr "needs_delay_slot" "yes")
   (set (attr "fp_mode")
        (if_then_else (eq_attr "fpu_single" "yes")
                      (const_string "single") (const_string "double")))
   (set_attr "type" "jump_ind")])

;; Like for sibcall_value_pcrel, use a fixed call clobbered register for
;; the branch address.
(define_insn_and_split "sibcall_value_pcrel_fdpic"
  [(set (match_operand 0 "" "=rf")
        (call (mem:SI (match_operand:SI 1 "symbol_ref_operand"))
              (match_operand 2)))
   (use (reg:SI FPSCR_MODES_REG))
   (use (reg:SI PIC_REG))
   (clobber (reg:SI R1_REG))
   (return)]
  "TARGET_SH2 && TARGET_FDPIC"
  "#"
  "&& reload_completed"
  [(const_int 0)]
{
  rtx lab = PATTERN (gen_call_site ());

  operands[3] =  gen_rtx_REG (SImode, R1_REG);

  sh_expand_sym_label2reg (operands[3], operands[1], lab, true);
  rtx i = emit_call_insn (gen_sibcall_valuei_pcrel_fdpic (operands[0],
                                                          operands[3],
                                                          operands[2],
                                                          copy_rtx (lab)));
  SIBLING_CALL_P (i) = 1;
  DONE;
}
  [(set_attr "needs_delay_slot" "yes")
   (set (attr "fp_mode")
        (if_then_else (eq_attr "fpu_single" "yes")
                      (const_string "single") (const_string "double")))
   (set_attr "type" "jump_ind")])

(define_expand "sibcall_value"
  [(parallel
    [(set (match_operand 0 "arith_reg_operand" "")
          (call (mem:SI (match_operand 1 "arith_reg_operand" ""))
                (match_operand 2 "" "")))
     (match_operand 3 "" "")
   (use (reg:SI FPSCR_MODES_REG))
     (return)])]
  ""
{
  if (TARGET_FDPIC)
    {
      rtx pic_reg = gen_rtx_REG (Pmode, PIC_REG);
      emit_move_insn (pic_reg, sh_get_fdpic_reg_initial_val ());
    }

  if (flag_pic && TARGET_SH2
      && MEM_P (operands[1])
      && GET_CODE (XEXP (operands[1], 0)) == SYMBOL_REF
      /* The PLT needs the PIC register, but the epilogue would have
         to restore it, so we can only use PC-relative PIC calls for
         static functions.  */
      && SYMBOL_REF_LOCAL_P (XEXP (operands[1], 0)))
    {
      if (TARGET_FDPIC)
       emit_call_insn (gen_sibcall_value_pcrel_fdpic (operands[0],
                                                      XEXP (operands[1], 0),
                                                      operands[2]));
      else
       emit_call_insn (gen_sibcall_value_pcrel (operands[0],
                                                XEXP (operands[1], 0),
                                                operands[2]));
      DONE;
    }
  else
    operands[1] = force_reg (SImode, XEXP (operands[1], 0));

  if (TARGET_FDPIC)
    {
      operands[1] = sh_load_function_descriptor (operands[1]);
      emit_call_insn (gen_sibcall_valuei_fdpic (operands[0], operands[1],
                                                operands[2]));
    }
  else
    emit_call_insn (gen_sibcall_valuei (operands[0], operands[1], operands[2]));
  DONE;
})

(define_expand "sibcall_epilogue"
  [(return)]
  ""
{
  sh_expand_epilogue (true);
  DONE;
})

(define_insn "indirect_jump_compact"
  [(set (pc)
        (match_operand:SI 0 "arith_reg_operand" "r"))]
  "TARGET_SH1"
  "jmp  @%0%#"
  [(set_attr "needs_delay_slot" "yes")
   (set_attr "type" "jump_ind")])

(define_expand "indirect_jump"
  [(set (pc)
        (match_operand 0 "register_operand" ""))]
  ""
{
  if (GET_MODE (operands[0]) != Pmode)
    operands[0] = gen_rtx_SUBREG (Pmode, operands[0], 0);
})

;; The use of operand 1 / 2 helps us distinguish case table jumps
;; which can be present in structured code from indirect jumps which can not
;; be present in structured code.  This allows -fprofile-arcs to work.

;; For SH1 processors.
(define_insn "casesi_jump_1"
  [(set (pc)
        (match_operand:SI 0 "register_operand" "r"))
   (use (label_ref (match_operand 1 "" "")))]
  "TARGET_SH1"
  "jmp  @%0%#"
  [(set_attr "needs_delay_slot" "yes")
   (set_attr "type" "jump_ind")])

;; For all later processors.
(define_insn "casesi_jump_2"
  [(set (pc) (plus:SI (match_operand:SI 0 "register_operand" "r")
                      (label_ref (match_operand 1 "" ""))))
   (use (label_ref (match_operand 2 "" "")))]
  "TARGET_SH2
   && (! INSN_UID (operands[1])
       || prev_real_insn (as_a<rtx_insn *> (operands[1])) == insn)"
  "braf %0%#"
  [(set_attr "needs_delay_slot" "yes")
   (set_attr "type" "jump_ind")])

;; Call subroutine returning any type.
;; ??? This probably doesn't work.
(define_expand "untyped_call"
  [(parallel [(call (match_operand 0 "" "")
                    (const_int 0))
              (match_operand 1 "" "")
              (match_operand 2 "" "")])]
  "TARGET_SH2E || TARGET_SH2A"
{
  /* RA does not know that the call sets the function value registers.
     We avoid problems by claiming that those registers are clobbered
     at this point.  */
  for (int i = 0; i < XVECLEN (operands[2], 0); i++)
    emit_clobber (SET_SRC (XVECEXP (operands[2], 0, i)));

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

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

  /* The optimizer does not know that the call sets the function value
     registers we stored in the result block.  We avoid problems by
     claiming that all hard registers are used and clobbered at this
     point.  */
  emit_insn (gen_blockage ());

  DONE;
})
\f
;; ------------------------------------------------------------------------
;; Misc insns
;; ------------------------------------------------------------------------

(define_insn "dect"
  [(set (reg:SI T_REG)
        (eq:SI (match_operand:SI 1 "arith_reg_dest" "0") (const_int 1)))
   (set (match_operand:SI 0 "arith_reg_dest" "=r")
        (plus:SI (match_dup 1) (const_int -1)))]
  "TARGET_SH2"
  "dt   %0"
  [(set_attr "type" "arith")])

(define_insn "nop"
  [(const_int 0)]
  ""
  "nop")

;; Load address of a label. This is only generated by the casesi expand,
;; and by machine_dependent_reorg (fixing up fp moves).
;; This must use unspec, because this only works for labels that are
;; within range.
(define_insn "mova"
  [(set (reg:SI R0_REG)
        (unspec:SI [(label_ref (match_operand 0 "" ""))] UNSPEC_MOVA))]
  "TARGET_SH1"
  "mova %O0,r0"
  [(set_attr "in_delay_slot" "no")
   (set_attr "type" "arith")])

;; machine_dependent_reorg will make this a `mova'.
(define_insn "mova_const"
  [(set (reg:SI R0_REG)
        (unspec:SI [(match_operand 0 "immediate_operand" "i")] UNSPEC_MOVA))]
  "TARGET_SH1"
  "#"
  [(set_attr "in_delay_slot" "no")
   (set_attr "type" "arith")])

;; Loads of the GOTPC relocation values must not be optimized away
;; by e.g. any kind of CSE and must stay as they are.  Although there
;; are other various ways to ensure this, we use an artificial counter
;; operand to generate unique symbols.
(define_expand "GOTaddr2picreg"
  [(set (reg:SI R0_REG)
        (unspec:SI [(const:SI (unspec:SI [(match_dup 2)
                                          (match_operand:SI 0 "" "")]
                                         UNSPEC_PIC))] UNSPEC_MOVA))
   (set (match_dup 1)
        (const:SI (unspec:SI [(match_dup 2) (match_dup 0)] UNSPEC_PIC)))
   (set (match_dup 1) (plus:SI (match_dup 1) (reg:SI R0_REG)))]
  ""
{
  if (TARGET_VXWORKS_RTP)
    {
      rtx gott_base = gen_rtx_SYMBOL_REF (Pmode, VXWORKS_GOTT_BASE);
      rtx gott_index = gen_rtx_SYMBOL_REF (Pmode, VXWORKS_GOTT_INDEX);
      emit_insn (gen_vxworks_picreg (gott_base, gott_index));
      DONE;
    }

  if (TARGET_FDPIC)
    {
      rtx pic_reg = gen_rtx_REG (Pmode, PIC_REG);
      emit_move_insn (pic_reg, sh_get_fdpic_reg_initial_val ());
      DONE;
    }

  operands[1] = gen_rtx_REG (Pmode, PIC_REG);
  operands[2] = gen_rtx_SYMBOL_REF (VOIDmode, GOT_SYMBOL_NAME);
})

;; A helper for GOTaddr2picreg to finish up the initialization of the
;; PIC register.
(define_expand "vxworks_picreg"
  [(set (reg:SI PIC_REG)
        (const:SI (unspec:SI [(match_operand:SI 0 "" "")] UNSPEC_PIC)))
   (set (reg:SI R0_REG)
        (const:SI (unspec:SI [(match_operand:SI 1 "" "")] UNSPEC_PIC)))
   (set (reg:SI PIC_REG)
        (mem:SI (reg:SI PIC_REG)))
   (set (reg:SI PIC_REG)
        (mem:SI (plus:SI (reg:SI PIC_REG)
                         (reg:SI R0_REG))))]
  "TARGET_VXWORKS_RTP")

(define_expand "builtin_setjmp_receiver"
  [(match_operand 0 "" "")]
  "flag_pic"
{
  emit_insn (gen_GOTaddr2picreg (const0_rtx));
  DONE;
})

(define_expand "call_site"
  [(unspec [(match_dup 0)] UNSPEC_CALLER)]
  "TARGET_SH1"
{
  static HOST_WIDE_INT i = 0;
  operands[0] = GEN_INT (i);
  i++;
})

;; op0 = op1 + r12 but hide it before reload completed.  See the comment
;; in symGOT_load expand.
(define_insn_and_split "chk_guard_add"
  [(set (match_operand:SI 0 "register_operand" "=&r")
        (unspec:SI [(match_operand:SI 1 "register_operand" "r")
                    (reg:SI PIC_REG)]
                   UNSPEC_CHKADD))]
  "TARGET_SH1"
  "#"
  "TARGET_SH1 && reload_completed"
  [(set (match_dup 0) (reg:SI PIC_REG))
   (set (match_dup 0) (plus:SI (match_dup 0) (match_dup 1)))]
  ""
  [(set_attr "type" "arith")])

(define_expand "sym_label2reg"
  [(set (match_operand:SI 0 "" "")
        (const:SI (unspec:SI [(match_operand:SI 1 "" "")
                              (const (plus:SI (match_operand:SI 2 "" "")
                                              (const_int 2)))]
                             UNSPEC_SYMOFF)))]
  "TARGET_SH1" "")

(define_expand "symPCREL_label2reg"
  [(set (match_operand:SI 0 "" "")
        (const:SI
         (unspec:SI
          [(const:SI (unspec:SI [(match_operand:SI 1 "" "")] UNSPEC_PCREL))
           (const:SI (plus:SI (match_operand:SI 2 "" "")
                              (const_int 2)))] UNSPEC_PCREL_SYMOFF)))]
  "TARGET_SH1"
  "")

(define_expand "symGOT_load"
  [(set (match_dup 2) (match_operand 1 "" ""))
   (set (match_dup 3) (plus (match_dup 2) (reg PIC_REG)))
   (set (match_operand 0 "" "") (mem (match_dup 3)))]
  ""
{
  rtx mem;
  bool stack_chk_guard_p = false;

  rtx picreg = TARGET_FDPIC ? sh_get_fdpic_reg_initial_val ()
                            : gen_rtx_REG (Pmode, PIC_REG);

  operands[2] = !can_create_pseudo_p () ? operands[0] : gen_reg_rtx (Pmode);
  operands[3] = !can_create_pseudo_p () ? operands[0] : gen_reg_rtx (Pmode);

  if (!TARGET_FDPIC
      && flag_stack_protect
      && GET_CODE (operands[1]) == CONST
      && GET_CODE (XEXP (operands[1], 0)) == UNSPEC
      && GET_CODE (XVECEXP (XEXP (operands[1], 0), 0, 0)) == SYMBOL_REF
      && strcmp (XSTR (XVECEXP (XEXP (operands[1], 0), 0, 0), 0),
                 "__stack_chk_guard") == 0)
    stack_chk_guard_p = true;

  emit_move_insn (operands[2], operands[1]);

  /* When stack protector inserts codes after the result is set to
     R0, @(rX, r12) will cause a spill failure for R0.  Use a unspec
     insn to avoid combining (set A (plus rX r12)) and (set op0 (mem A))
     when rX is a GOT address for the guard symbol.  Ugly but doesn't
     matter because this is a rare situation.  */
  if (stack_chk_guard_p)
    emit_insn (gen_chk_guard_add (operands[3], operands[2]));
  else
    emit_move_insn (operands[3], gen_rtx_PLUS (Pmode, operands[2], picreg));

  /* N.B. This is not constant for a GOTPLT relocation.  */
  mem = gen_rtx_MEM (Pmode, operands[3]);
  MEM_NOTRAP_P (mem) = 1;
  /* ??? Should we have a special alias set for the GOT?  */
  emit_move_insn (operands[0], mem);

  DONE;
})

(define_expand "sym2GOT"
  [(const (unspec [(match_operand 0 "" "")] UNSPEC_GOT))]
  ""
  "")

(define_expand "symGOT2reg"
  [(match_operand 0 "" "") (match_operand 1 "" "")]
  ""
{
  rtx gotsym, insn;

  gotsym = gen_sym2GOT (operands[1]);
  PUT_MODE (gotsym, Pmode);
  insn = emit_insn (gen_symGOT_load (operands[0], gotsym));

  MEM_READONLY_P (SET_SRC (PATTERN (insn))) = 1;

  DONE;
})

(define_expand "sym2GOTFUNCDESC"
  [(const (unspec [(match_operand 0)] UNSPEC_GOTFUNCDESC))]
  "TARGET_FDPIC")

(define_expand "symGOTFUNCDESC2reg"
  [(match_operand 0) (match_operand 1)]
  "TARGET_FDPIC"
{
  rtx gotsym = gen_sym2GOTFUNCDESC (operands[1]);
  PUT_MODE (gotsym, Pmode);
  rtx insn = emit_insn (gen_symGOT_load (operands[0], gotsym));

  MEM_READONLY_P (SET_SRC (PATTERN (insn))) = 1;

  DONE;
})

(define_expand "symGOTPLT2reg"
  [(match_operand 0 "" "") (match_operand 1 "" "")]
  ""
{
  rtx pltsym = gen_rtx_CONST (Pmode,
                              gen_rtx_UNSPEC (Pmode,
                                              gen_rtvec (1, operands[1]),
                                              UNSPEC_GOTPLT));
  emit_insn (gen_symGOT_load (operands[0], pltsym));
  DONE;
})

(define_expand "sym2GOTOFF"
  [(const (unspec [(match_operand 0 "" "")] UNSPEC_GOTOFF))]
  ""
  "")

(define_expand "symGOTOFF2reg"
  [(match_operand 0 "" "") (match_operand 1 "" "")]
  ""
{
  rtx gotoffsym;
  rtx t = (!can_create_pseudo_p ()
           ? operands[0]
           : gen_reg_rtx (GET_MODE (operands[0])));

  rtx picreg = TARGET_FDPIC ? sh_get_fdpic_reg_initial_val ()
                            : gen_rtx_REG (Pmode, PIC_REG);

  gotoffsym = gen_sym2GOTOFF (operands[1]);
  PUT_MODE (gotoffsym, Pmode);
  emit_move_insn (t, gotoffsym);
  rtx_insn *insn = emit_move_insn (operands[0], gen_rtx_PLUS (Pmode, t, picreg));

  set_unique_reg_note (insn, REG_EQUAL, operands[1]);

  DONE;
})

(define_expand "sym2GOTOFFFUNCDESC"
  [(const (unspec [(match_operand 0)] UNSPEC_GOTOFFFUNCDESC))]
  "TARGET_FDPIC")

(define_expand "symGOTOFFFUNCDESC2reg"
  [(match_operand 0) (match_operand 1)]
  "TARGET_FDPIC"
{
  rtx picreg = sh_get_fdpic_reg_initial_val ();
  rtx t = !can_create_pseudo_p ()
          ? operands[0]
          : gen_reg_rtx (GET_MODE (operands[0]));

  rtx gotoffsym = gen_sym2GOTOFFFUNCDESC (operands[1]);
  PUT_MODE (gotoffsym, Pmode);
  emit_move_insn (t, gotoffsym);
  emit_move_insn (operands[0], gen_rtx_PLUS (Pmode, t, picreg));
  DONE;
})

(define_expand "symPLT_label2reg"
  [(set (match_operand:SI 0 "" "")
        (const:SI
         (unspec:SI
          [(const:SI (unspec:SI [(match_operand:SI 1 "" "")] UNSPEC_PLT))
           (const:SI (plus:SI (match_operand:SI 2 "" "")
                              (const_int 2)))] UNSPEC_PCREL_SYMOFF)))
   ;; Even though the PIC register is not really used by the call
   ;; sequence in which this is expanded, the PLT code assumes the PIC
   ;; register is set, so we must not skip its initialization.  Since
   ;; we only use this expand as part of calling sequences, and never
   ;; to take the address of a function, this is the best point to
   ;; insert the (use).  Using the PLT to take the address of a
   ;; function would be wrong, not only because the PLT entry could
   ;; then be called from a function that doesn't initialize the PIC
   ;; register to the proper GOT, but also because pointers to the
   ;; same function might not compare equal, should they be set by
   ;; different shared libraries.
   (use (reg:SI PIC_REG))]
  "TARGET_SH1"
  "")

(define_expand "sym2PIC"
  [(const (unspec [(match_operand:SI 0 "" "")] UNSPEC_PIC))]
  ""
  "")

;; -------------------------------------------------------------------------
;; TLS code generation.

;; FIXME: The multi-insn asm blocks should be converted to use
;; define_insn_and_split.
;; See the thread [PATCH/RFA] SH TLS support on gcc-patches
;; <http://gcc.gnu.org/ml/gcc-patches/2003-02/msg01898.html>
;; for details.

(define_insn "tls_global_dynamic"
  [(set (match_operand:SI 0 "register_operand" "=&z")
        (call:SI (mem:SI (unspec:SI [(match_operand:SI 1 "" "")]
                                  UNSPEC_TLSGD))
              (const_int 0)))
   (use (reg:SI FPSCR_MODES_REG))
   (use (reg:SI PIC_REG))
   (clobber (reg:SI PR_REG))
   (clobber (scratch:SI))]
  "TARGET_SH1"
{
  return       "mov.l   1f,r4"                  "\n"
         "      mova    2f,r0"                  "\n"
         "      mov.l   2f,r1"                  "\n"
         "      add     r0,r1"                  "\n"
         "      jsr     @r1"                    "\n"
         "      add     r12,r4"                 "\n"
         "      bra     3f"                     "\n"
         "      nop"                            "\n"
         "      .align  2"                      "\n"
         "1:    .long   %a1@TLSGD"              "\n"
         "2:    .long   __tls_get_addr@PLT"     "\n"
         "3:";
}
  [(set_attr "type" "tls_load")
   (set_attr "length" "26")])

(define_insn "tls_local_dynamic"
  [(set (match_operand:SI 0 "register_operand" "=&z")
        (call:SI (mem:SI (unspec:SI [(match_operand:SI 1 "" "")]
                                  UNSPEC_TLSLDM))
              (const_int 0)))
   (use (reg:SI FPSCR_MODES_REG))
   (use (reg:SI PIC_REG))
   (clobber (reg:SI PR_REG))
   (clobber (scratch:SI))]
  "TARGET_SH1"
{
  return       "mov.l   1f,r4"                  "\n"
         "      mova    2f,r0"                  "\n"
         "      mov.l   2f,r1"                  "\n"
         "      add     r0,r1"                  "\n"
         "      jsr     @r1"                    "\n"
         "      add     r12,r4"                 "\n"
         "      bra     3f"                     "\n"
         "      nop"                            "\n"
         "      .align  2"                      "\n"
         "1:    .long   %a1@TLSLDM"             "\n"
         "2:    .long   __tls_get_addr@PLT"     "\n"
         "3:";
}
  [(set_attr "type" "tls_load")
   (set_attr "length" "26")])

(define_expand "sym2DTPOFF"
  [(const (unspec [(match_operand 0 "" "")] UNSPEC_DTPOFF))]
  ""
  "")

(define_expand "symDTPOFF2reg"
  [(match_operand 0 "" "") (match_operand 1 "" "") (match_operand 2 "" "")]
  ""
{
  rtx dtpoffsym;
  rtx t = (!can_create_pseudo_p ()
           ? operands[0]
           : gen_reg_rtx (GET_MODE (operands[0])));

  dtpoffsym = gen_sym2DTPOFF (operands[1]);
  PUT_MODE (dtpoffsym, Pmode);
  emit_move_insn (t, dtpoffsym);
  emit_move_insn (operands[0], gen_rtx_PLUS (Pmode, t, operands[2]));
  DONE;
})

(define_expand "sym2GOTTPOFF"
  [(const (unspec [(match_operand 0 "" "")] UNSPEC_GOTTPOFF))]
  ""
  "")

(define_insn "tls_initial_exec"
  [(set (match_operand:SI 0 "register_operand" "=&r")
        (unspec:SI [(match_operand:SI 1 "" "")]
                    UNSPEC_TLSIE))
   (use (reg:SI GBR_REG))
   (use (reg:SI PIC_REG))
   (clobber (reg:SI R0_REG))]
  ""
{
  return       "mov.l   1f,r0"          "\n"
         "      stc     gbr,%0"         "\n"
         "      mov.l   @(r0,r12),r0"   "\n"
         "      bra     2f"             "\n"
         "      add     r0,%0"          "\n"
         "      .align  2"              "\n"
         "1:    .long   %a1"            "\n"
         "2:";
}
  [(set_attr "type" "tls_load")
   (set_attr "length" "16")])

(define_expand "sym2TPOFF"
  [(const (unspec [(match_operand 0 "" "")] UNSPEC_TPOFF))]
  ""
  "")

(define_expand "symTPOFF2reg"
  [(match_operand 0 "" "") (match_operand 1 "" "")]
  ""
{
  rtx tpoffsym;

  tpoffsym = gen_sym2TPOFF (operands[1]);
  PUT_MODE (tpoffsym, Pmode);
  emit_move_insn (operands[0], tpoffsym);
  DONE;
})

;;------------------------------------------------------------------------------
;; Thread pointer getter and setter.
;;
;; On SH the thread pointer is kept in the GBR.
;; These patterns are usually expanded from the respective built-in functions.
(define_expand "get_thread_pointersi"
  [(set (match_operand:SI 0 "arith_reg_dest") (reg:SI GBR_REG))]
  "TARGET_SH1")

;; The store_gbr insn can also be used on !TARGET_SH1 for doing TLS accesses.
(define_insn "store_gbr"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r") (reg:SI GBR_REG))]
  ""
  "stc  gbr,%0"
  [(set_attr "type" "tls_load")])

(define_expand "set_thread_pointersi"
  [(set (reg:SI GBR_REG)
        (unspec_volatile:SI [(match_operand:SI 0 "arith_reg_operand")]
         UNSPECV_GBR))]
  "TARGET_SH1")

(define_insn "load_gbr"
  [(set (reg:SI GBR_REG)
        (unspec_volatile:SI [(match_operand:SI 0 "arith_reg_operand" "r")]
         UNSPECV_GBR))]
  "TARGET_SH1"
  "ldc  %0,gbr"
  [(set_attr "type" "move")])

;;------------------------------------------------------------------------------
;; Thread pointer relative memory loads and stores.
;;
;; On SH there are GBR displacement address modes which can be utilized to
;; access memory behind the thread pointer.
;; Since we do not allow using GBR for general purpose memory accesses, these
;; GBR addressing modes are formed by the combine pass.
;; This could be done with fewer patterns than below by using a mem predicate
;; for the GBR mem, but then reload would try to reload addresses with a
;; zero displacement for some strange reason.

(define_insn "*mov<mode>_gbr_load"
  [(set (match_operand:QIHISI 0 "arith_reg_dest" "=z")
        (mem:QIHISI (plus:SI (reg:SI GBR_REG)
                             (match_operand:QIHISI 1 "gbr_displacement"))))]
  "TARGET_SH1"
  "mov.<bwl>    @(%O1,gbr),%0"
  [(set_attr "type" "load")])

(define_insn "*mov<mode>_gbr_load"
  [(set (match_operand:QIHISI 0 "arith_reg_dest" "=z")
        (mem:QIHISI (reg:SI GBR_REG)))]
  "TARGET_SH1"
  "mov.<bwl>    @(0,gbr),%0"
  [(set_attr "type" "load")])

(define_insn "*mov<mode>_gbr_load"
  [(set (match_operand:SI 0 "arith_reg_dest" "=z")
        (sign_extend:SI
          (mem:QIHI (plus:SI (reg:SI GBR_REG)
                             (match_operand:QIHI 1 "gbr_displacement")))))]
  "TARGET_SH1"
  "mov.<bw>     @(%O1,gbr),%0"
  [(set_attr "type" "load")])

(define_insn "*mov<mode>_gbr_load"
  [(set (match_operand:SI 0 "arith_reg_dest" "=z")
        (sign_extend:SI (mem:QIHI (reg:SI GBR_REG))))]
  "TARGET_SH1"
  "mov.<bw>     @(0,gbr),%0"
  [(set_attr "type" "load")])

(define_insn "*mov<mode>_gbr_store"
  [(set (mem:QIHISI (plus:SI (reg:SI GBR_REG)
                             (match_operand:QIHISI 0 "gbr_displacement")))
        (match_operand:QIHISI 1 "register_operand" "z"))]
  "TARGET_SH1"
  "mov.<bwl>    %1,@(%O0,gbr)"
  [(set_attr "type" "store")])

(define_insn "*mov<mode>_gbr_store"
  [(set (mem:QIHISI (reg:SI GBR_REG))
        (match_operand:QIHISI 0 "register_operand" "z"))]
  "TARGET_SH1"
  "mov.<bwl>    %0,@(0,gbr)"
  [(set_attr "type" "store")])

;; DImode memory accesses have to be split in two SImode accesses.
;; Split them before reload, so that it gets a better chance to figure out
;; how to deal with the R0 restriction for the individual SImode accesses.
;; Do not match this insn during or after reload because it can't be split
;; afterwards.
(define_insn_and_split "*movdi_gbr_load"
  [(set (match_operand:DI 0 "arith_reg_dest")
        (match_operand:DI 1 "gbr_address_mem"))]
  "TARGET_SH1 && can_create_pseudo_p ()"
  "#"
  "&& 1"
  [(set (match_dup 3) (match_dup 5))
   (set (match_dup 4) (match_dup 6))]
{
  /* Swap low/high part load order on little endian, so that the result reg
     of the second load can be used better.  */
  int off = TARGET_LITTLE_ENDIAN ? 1 : 0;
  operands[3 + off] = gen_lowpart (SImode, operands[0]);
  operands[5 + off] = gen_lowpart (SImode, operands[1]);
  operands[4 - off] = gen_highpart (SImode, operands[0]);
  operands[6 - off] = gen_highpart (SImode, operands[1]);
})

(define_insn_and_split "*movdi_gbr_store"
  [(set (match_operand:DI 0 "gbr_address_mem")
        (match_operand:DI 1 "register_operand"))]
  "TARGET_SH1 && can_create_pseudo_p ()"
  "#"
  "&& 1"
  [(set (match_dup 3) (match_dup 5))
   (set (match_dup 4) (match_dup 6))]
{
  /* Swap low/high part store order on big endian, so that stores of function
     call results can save a reg copy.  */
  int off = TARGET_LITTLE_ENDIAN ? 0 : 1;
  operands[3 + off] = gen_lowpart (SImode, operands[0]);
  operands[5 + off] = gen_lowpart (SImode, operands[1]);
  operands[4 - off] = gen_highpart (SImode, operands[0]);
  operands[6 - off] = gen_highpart (SImode, operands[1]);
})

;; Sometimes memory accesses do not get combined with the store_gbr insn,
;; in particular when the displacements are in the range of the regular move
;; insns.  Thus, in the first split pass after the combine pass we search
;; for missed opportunities and try to fix them up ourselves.
;; If an equivalent GBR address can be determined the load / store is split
;; into one of the GBR load / store patterns.
;; All of that must happen before reload (GBR address modes use R0 as the
;; other operand) and there's no point of doing it if the GBR is not
;; referenced in a function at all.
(define_split
  [(set (match_operand:QIHISIDI 0 "register_operand")
        (match_operand:QIHISIDI 1 "memory_operand"))]
  "TARGET_SH1 && !reload_in_progress && !reload_completed
   && df_regs_ever_live_p (GBR_REG)"
  [(set (match_dup 0) (match_dup 1))]
{
  rtx gbr_mem = sh_find_equiv_gbr_addr (curr_insn, operands[1]);
  if (gbr_mem != NULL_RTX)
    operands[1] = replace_equiv_address (operands[1], gbr_mem);
  else
    FAIL;
})

(define_split
  [(set (match_operand:SI 0 "register_operand")
        (sign_extend:SI (match_operand:QIHI 1 "memory_operand")))]
  "TARGET_SH1 && !reload_in_progress && !reload_completed
   && df_regs_ever_live_p (GBR_REG)"
  [(set (match_dup 0) (sign_extend:SI (match_dup 1)))]
{
  rtx gbr_mem = sh_find_equiv_gbr_addr (curr_insn, operands[1]);
  if (gbr_mem != NULL_RTX)
    operands[1] = replace_equiv_address (operands[1], gbr_mem);
  else
    FAIL;
})

;; On SH2A we've got movu.b and movu.w for doing zero-extending mem loads.
;; Split those so that a GBR load can be used.
(define_split
  [(set (match_operand:SI 0 "register_operand")
        (zero_extend:SI (match_operand:QIHI 1 "memory_operand")))]
  "TARGET_SH2A && !reload_in_progress && !reload_completed
   && df_regs_ever_live_p (GBR_REG)"
  [(set (match_dup 2) (match_dup 1))
   (set (match_dup 0) (zero_extend:SI (match_dup 2)))]
{
  rtx gbr_mem = sh_find_equiv_gbr_addr (curr_insn, operands[1]);
  if (gbr_mem != NULL_RTX)
    {
      operands[2] = gen_reg_rtx (GET_MODE (operands[1]));
      operands[1] = replace_equiv_address (operands[1], gbr_mem);
    }
  else
    FAIL;
})

(define_split
  [(set (match_operand:QIHISIDI 0 "memory_operand")
        (match_operand:QIHISIDI 1 "register_operand"))]
  "TARGET_SH1 && !reload_in_progress && !reload_completed
   && df_regs_ever_live_p (GBR_REG)"
  [(set (match_dup 0) (match_dup 1))]
{
  rtx gbr_mem = sh_find_equiv_gbr_addr (curr_insn, operands[0]);
  if (gbr_mem != NULL_RTX)
    operands[0] = replace_equiv_address (operands[0], gbr_mem);
  else
    FAIL;
})

;;------------------------------------------------------------------------------
;; case instruction for switch statements.

;; operand 0 is index
;; operand 1 is the minimum bound
;; operand 2 is the maximum bound - minimum bound + 1
;; operand 3 is CODE_LABEL for the table;
;; operand 4 is the CODE_LABEL to go to if index out of range.
(define_expand "casesi"
  [(match_operand:SI 0 "arith_reg_operand" "")
   (match_operand:SI 1 "arith_reg_operand" "")
   (match_operand:SI 2 "arith_reg_operand" "")
   (match_operand 3 "" "") (match_operand 4 "" "")]
  ""
{
  rtx reg = gen_reg_rtx (SImode);
  rtx reg2 = gen_reg_rtx (SImode);

  operands[1] = copy_to_mode_reg (SImode, operands[1]);
  operands[2] = copy_to_mode_reg (SImode, operands[2]);
  /* If optimizing, casesi_worker depends on the mode of the instruction
     before label it 'uses' - operands[3].  */
  emit_insn (gen_casesi_0 (operands[0], operands[1], operands[2], operands[4],
                           reg));
  emit_insn (gen_casesi_worker_0 (reg2, reg, operands[3]));
  if (TARGET_SH2)
    emit_jump_insn (gen_casesi_jump_2 (reg2, gen_label_rtx (), operands[3]));
  else
    emit_jump_insn (gen_casesi_jump_1 (reg2, operands[3]));
  /* For SH2 and newer, the ADDR_DIFF_VEC is not actually relative to
     operands[3], but to lab.  We will fix this up in
     machine_dependent_reorg.  */
  emit_barrier ();
  DONE;
})

(define_expand "casesi_0"
  [(set (match_operand:SI 4 "" "") (match_operand:SI 0 "arith_reg_operand" ""))
   (set (match_dup 4) (minus:SI (match_dup 4)
                                (match_operand:SI 1 "arith_operand" "")))
   (set (reg:SI T_REG)
        (gtu:SI (match_dup 4)
                (match_operand:SI 2 "arith_reg_operand" "")))
   (set (pc)
        (if_then_else (ne (reg:SI T_REG)
                          (const_int 0))
                      (label_ref (match_operand 3 "" ""))
                      (pc)))]
  "TARGET_SH1"
  "")

;; ??? reload might clobber r0 if we use it explicitly in the RTL before
;; reload; using a R0_REGS pseudo reg is likely to give poor code.
;; So we keep the use of r0 hidden in a R0_REGS clobber until after reload.
;;
;; The use on the T_REG in the casesi_worker* patterns links the bounds
;; checking insns and the table memory access.  See also PR 69713.
(define_insn "casesi_worker_0"
  [(set (match_operand:SI 0 "register_operand" "=r,r")
        (unspec:SI [(match_operand:SI 1 "register_operand" "0,r")
                 (label_ref (match_operand 2 "" ""))] UNSPEC_CASESI))
   (clobber (match_scratch:SI 3 "=X,1"))
   (clobber (match_scratch:SI 4 "=&z,z"))
   (use (reg:SI T_REG))]
  "TARGET_SH1"
  "#")

(define_split
  [(set (match_operand:SI 0 "register_operand" "")
        (unspec:SI [(match_operand:SI 1 "register_operand" "")
                    (label_ref (match_operand 2 "" ""))] UNSPEC_CASESI))
   (clobber (match_scratch:SI 3 ""))
   (clobber (match_scratch:SI 4))
   (use (reg:SI T_REG))]
  "TARGET_SH1 && ! TARGET_SH2 && reload_completed"
  [(set (reg:SI R0_REG) (unspec:SI [(label_ref (match_dup 2))] UNSPEC_MOVA))
   (parallel [(set (match_dup 0)
              (unspec:SI [(reg:SI R0_REG) (match_dup 1)
                          (label_ref (match_dup 2))] UNSPEC_CASESI))
              (clobber (match_dup 3))])
   (set (match_dup 0) (plus:SI (match_dup 0) (reg:SI R0_REG)))]
{
  if (GET_CODE (operands[2]) == CODE_LABEL)
    LABEL_NUSES (operands[2])++;
})

(define_split
  [(set (match_operand:SI 0 "register_operand" "")
        (unspec:SI [(match_operand:SI 1 "register_operand" "")
                    (label_ref (match_operand 2 "" ""))] UNSPEC_CASESI))
   (clobber (match_scratch:SI 3 ""))
   (clobber (match_scratch:SI 4))
   (use (reg:SI T_REG))]
  "TARGET_SH2 && reload_completed"
  [(set (reg:SI R0_REG) (unspec:SI [(label_ref (match_dup 2))] UNSPEC_MOVA))
   (parallel [(set (match_dup 0)
              (unspec:SI [(reg:SI R0_REG) (match_dup 1)
                          (label_ref (match_dup 2))] UNSPEC_CASESI))
              (clobber (match_dup 3))])]
{
  if (GET_CODE (operands[2]) == CODE_LABEL)
    LABEL_NUSES (operands[2])++;
})

;; This may be replaced with casesi_worker_2 in sh_reorg for PIC.
;; The insn length is set to 8 for that case.
(define_insn "casesi_worker_1"
  [(set (match_operand:SI 0 "register_operand" "=r,r")
        (unspec:SI [(reg:SI R0_REG)
                    (match_operand:SI 1 "register_operand" "0,r")
                    (label_ref (match_operand 2 "" ""))] UNSPEC_CASESI))
   (clobber (match_scratch:SI 3 "=X,1"))]
  "TARGET_SH1"
{
  rtx diff_vec = PATTERN (NEXT_INSN (as_a <rtx_insn *> (operands[2])));

  gcc_assert (GET_CODE (diff_vec) == ADDR_DIFF_VEC);

  switch (GET_MODE (diff_vec))
    {
    case SImode:
      return   "shll2   %1"     "\n"
             "  mov.l   @(r0,%1),%0";
    case HImode:
      return   "add     %1,%1"  "\n"
             "  mov.w   @(r0,%1),%0";
    case QImode:
      if (ADDR_DIFF_VEC_FLAGS (diff_vec).offset_unsigned)
        return         "mov.b   @(r0,%1),%0"    "\n"
               "        extu.b  %0,%0";
      else
        return "mov.b   @(r0,%1),%0";

    default:
      gcc_unreachable ();
    }
}
  [(set_attr_alternative "length"
     [(if_then_else (match_test "flag_pic") (const_int 8) (const_int 4))
      (if_then_else (match_test "flag_pic") (const_int 8) (const_int 4))])])

(define_insn "casesi_worker_2"
  [(set (match_operand:SI 0 "register_operand" "=r,r")
        (unspec:SI [(reg:SI R0_REG)
                    (match_operand:SI 1 "register_operand" "0,r")
                    (label_ref (match_operand 2 "" ""))
                    (label_ref (match_operand 3 "" ""))] UNSPEC_CASESI))
   (clobber (match_operand:SI 4 "" "=X,1"))]
  "TARGET_SH2 && reload_completed && flag_pic"
{
  rtx diff_vec = PATTERN (NEXT_INSN (as_a <rtx_insn *> (operands[2])));
  gcc_assert (GET_CODE (diff_vec) == ADDR_DIFF_VEC);

  switch (GET_MODE (diff_vec))
    {
    case SImode:
      return   "shll2   %1"             "\n"
             "  add     r0,%1"          "\n"
             "  mova    %O3,r0"         "\n"
             "  mov.l   @(r0,%1),%0";
    case HImode:
      return   "add     %1,%1"          "\n"
             "  add     r0,%1"          "\n"
             "  mova    %O3,r0"         "\n"
             "  mov.w   @(r0,%1),%0";
    case QImode:
      if (ADDR_DIFF_VEC_FLAGS (diff_vec).offset_unsigned)
        return         "add     r0,%1"          "\n"
                "       mova    %O3,r0"         "\n"
                "       mov.b   @(r0,%1),%0"    "\n"
                "       extu.b  %0,%0";
      else
        return         "add     r0,%1"          "\n"
                "       mova    %O3,r0"         "\n"
                "       mov.b   @(r0,%1),%0";
    default:
      gcc_unreachable ();
    }
}
  [(set_attr "length" "8")])

(define_expand "simple_return"
  [(simple_return)]
 "sh_can_use_simple_return_p ()")

(define_expand "return"
  [(return)]
 "reload_completed && epilogue_completed")

(define_insn "*<code>_i"
  [(any_return)]
  "TARGET_SH1
   && reload_completed
   && ! sh_cfun_trap_exit_p ()"
{
  if (TARGET_SH2A && (dbr_sequence_length () == 0)
      && !current_function_interrupt)
    return "rts/n";
  else
    return "%@  %#";
}
  [(set_attr "type" "return")
   (set_attr "needs_delay_slot" "yes")])

;; trapa has no delay slot.
(define_insn "*return_trapa"
  [(return)]
  "TARGET_SH1 && reload_completed"
  "%@"
  [(set_attr "type" "return")])

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

(define_expand "epilogue"
  [(return)]
  ""
{
  sh_expand_epilogue (false);
})

(define_expand "eh_return"
  [(use (match_operand 0 "register_operand" ""))]
  ""
{
  emit_insn (gen_eh_set_ra_si (operands[0]));
  DONE;
})

;; Clobber the return address on the stack.  We can't expand this
;; until we know where it will be put in the stack frame.

(define_insn "eh_set_ra_si"
  [(unspec_volatile [(match_operand:SI 0 "register_operand" "r")]
      UNSPECV_EH_RETURN)
   (clobber (match_scratch:SI 1 "=&r"))]
  ""
  "#")

(define_split
  [(unspec_volatile [(match_operand 0 "register_operand" "")]
      UNSPECV_EH_RETURN)
   (clobber (match_scratch 1 ""))]
  "reload_completed"
  [(const_int 0)]
{
  sh_set_return_address (operands[0], operands[1]);
  DONE;
})

(define_insn "blockage"
  [(unspec_volatile [(const_int 0)] UNSPECV_BLOCKAGE)]
  ""
  ""
  [(set_attr "length" "0")])
\f
;; Define movml instructions for SH2A target.  Currently they are
;; used to push and pop all banked registers only.

(define_insn "movml_push_banked"
  [(set (match_operand:SI 0 "register_operand" "=r")
          (plus (match_dup 0) (const_int -32)))
   (set (mem:SI (plus:SI (match_dup 0) (const_int 28))) (reg:SI R7_REG))
   (set (mem:SI (plus:SI (match_dup 0) (const_int 24))) (reg:SI R6_REG))
   (set (mem:SI (plus:SI (match_dup 0) (const_int 20))) (reg:SI R5_REG))
   (set (mem:SI (plus:SI (match_dup 0) (const_int 16))) (reg:SI R4_REG))
   (set (mem:SI (plus:SI (match_dup 0) (const_int 12))) (reg:SI R3_REG))
   (set (mem:SI (plus:SI (match_dup 0) (const_int 8))) (reg:SI R2_REG))
   (set (mem:SI (plus:SI (match_dup 0) (const_int 4))) (reg:SI R1_REG))
   (set (mem:SI (plus:SI (match_dup 0) (const_int 0))) (reg:SI R0_REG))]
  "TARGET_SH2A && REGNO (operands[0]) == 15"
  "movml.l      r7,@-r15"
  [(set_attr "in_delay_slot" "no")])

(define_insn "movml_pop_banked"
  [(set (match_operand:SI 0 "register_operand" "=r")
          (plus (match_dup 0) (const_int 32)))
   (set (reg:SI R0_REG) (mem:SI (plus:SI (match_dup 0) (const_int -32))))
   (set (reg:SI R1_REG) (mem:SI (plus:SI (match_dup 0) (const_int -28))))
   (set (reg:SI R2_REG) (mem:SI (plus:SI (match_dup 0) (const_int -24))))
   (set (reg:SI R3_REG) (mem:SI (plus:SI (match_dup 0) (const_int -20))))
   (set (reg:SI R4_REG) (mem:SI (plus:SI (match_dup 0) (const_int -16))))
   (set (reg:SI R5_REG) (mem:SI (plus:SI (match_dup 0) (const_int -12))))
   (set (reg:SI R6_REG) (mem:SI (plus:SI (match_dup 0) (const_int -8))))
   (set (reg:SI R7_REG) (mem:SI (plus:SI (match_dup 0) (const_int -4))))]
  "TARGET_SH2A && REGNO (operands[0]) == 15"
  "movml.l      @r15+,r7"
  [(set_attr "in_delay_slot" "no")])
\f
;; ------------------------------------------------------------------------
;; Scc instructions
;; ------------------------------------------------------------------------

(define_insn "movt"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r")
        (match_operand:SI 1 "t_reg_operand"))]
  "TARGET_SH1"
  "movt %0"
  [(set_attr "type" "arith")])

(define_insn "movrt"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r")
        (xor:SI (match_operand:SI 1 "t_reg_operand" "") (const_int 1)))]
  "TARGET_SH2A"
  "movrt        %0"
  [(set_attr "type" "arith")])

(define_expand "cstoresi4"
  [(set (match_operand:SI 0 "register_operand")
        (match_operator:SI 1 "comparison_operator"
         [(match_operand:SI 2 "cmpsi_operand")
          (match_operand:SI 3 "arith_operand")]))]
  "TARGET_SH1"
{
   if (sh_expand_t_scc (operands))
     DONE;

   if (! currently_expanding_to_rtl)
     FAIL;
   
   sh_emit_compare_and_set (operands, SImode);
   DONE;
})

(define_expand "cstoredi4"
  [(set (match_operand:SI 0 "register_operand")
        (match_operator:SI 1 "comparison_operator"
         [(match_operand:DI 2 "arith_operand")
          (match_operand:DI 3 "arith_operand")]))]
  "TARGET_SH2"
{
   if (sh_expand_t_scc (operands))
     DONE;

   if (! currently_expanding_to_rtl)
     FAIL;
   
   sh_emit_compare_and_set (operands, DImode);
   DONE;
})

;; Move the complement of the T reg to a reg.
;; On SH2A the movrt insn can be used.
;; On anything else than SH2A this has to be done with multiple instructions.
;; One obvious way would be:
;;      cmp/eq  ...
;;      movt    r0
;;      xor     #1,r0
;;
;; However, this puts pressure on r0 in most cases and thus the following is
;; more appealing:
;;      cmp/eq  ...
;;      mov     #-1,temp
;;      negc    temp,dest
;;
;; If the constant -1 can be CSE-ed or lifted out of a loop it effectively
;; becomes a one instruction operation.  Moreover, care must be taken that
;; the insn can still be combined with inverted compare and branch code
;; around it.  On the other hand, if a function returns the complement of
;; a previous comparison result in the T bit, the xor #1,r0 approach might
;; lead to better code.
(define_expand "movnegt"
  [(set (match_operand:SI 0 "arith_reg_dest" "")
        (xor:SI (match_operand:SI 1 "t_reg_operand" "") (const_int 1)))]
  "TARGET_SH1"
{
  if (TARGET_SH2A)
    emit_insn (gen_movrt (operands[0], operands[1]));
  else
    {
      rtx val = force_reg (SImode, gen_int_mode (-1, SImode));
      emit_insn (gen_movrt_negc (operands[0], operands[1], val));
    }
  DONE;
})

(define_insn_and_split "movrt_negc"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r")
        (xor:SI (match_operand:SI 1 "t_reg_operand") (const_int 1)))
   (set (reg:SI T_REG) (const_int 1))
   (use (match_operand:SI 2 "arith_reg_operand" "r"))]
  "TARGET_SH1"
  "negc %2,%0"
  "&& !sh_in_recog_treg_set_expr ()"
  [(const_int 0)]
{
  if (sh_split_movrt_negc_to_movt_xor (curr_insn, operands))
    DONE;
  else
    FAIL;
}
  [(set_attr "type" "arith")])

;; The -1 constant will not be CSE-ed for the *movrt_negc pattern, but the
;; pattern can be used by the combine pass.  Using a scratch reg for the
;; -1 constant results in slightly better register allocations compared to
;; generating a pseudo reg before reload.
(define_insn_and_split "*movrt_negc"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r")
        (xor:SI (match_operand:SI 1 "t_reg_operand") (const_int 1)))
   (clobber (match_scratch:SI 2 "=r"))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1 && ! TARGET_SH2A"
  "#"
  "&& !sh_in_recog_treg_set_expr ()"
  [(const_int 0)]
{
  if (sh_split_movrt_negc_to_movt_xor (curr_insn, operands))
    DONE;
  else if (reload_completed)
    {
      emit_move_insn (operands[2], gen_int_mode (-1, SImode));
      emit_insn (gen_movrt_negc (operands[0], operands[1], operands[2]));
      DONE;
    }
  else
    FAIL;
})

;; Store the negated T bit in a reg using r0 and xor.  This one doesn't
;; clobber the T bit, which is useful when storing the T bit and the
;; negated T bit in parallel.  On SH2A the movrt insn can be used for that.
;; Usually we don't want this insn to be matched, except for cases where the
;; T bit clobber is really not appreciated.  Hence the extra use on T_REG.
(define_insn_and_split "movrt_xor"
  [(set (match_operand:SI 0 "arith_reg_dest" "=z")
        (xor:SI (match_operand:SI 1 "t_reg_operand") (const_int 1)))
   (use (reg:SI T_REG))]
  "TARGET_SH1"
  "#"
  "&& reload_completed"
  [(set (match_dup 0) (reg:SI T_REG))
   (set (match_dup 0) (xor:SI (match_dup 0) (const_int 1)))])

;; 0x7fffffff + T
;; 0x7fffffff + (1-T) = 0 - 0x80000000 - T
;;
;; Notice that 0 - 0x80000000 = 0x80000000.

;; Single bit tests are usually done with zero_extract.  On non-SH2A this
;; will use a tst-negc sequence.  On SH2A it will use a bld-addc sequence.
;; The zeroth bit requires a special pattern, otherwise we get a shlr-addc.
;; This is a special case of the generic treg_set_expr pattern and thus has
;; to come first or it will never match.
(define_insn_and_split "*mov_t_msb_neg"
  [(set (match_operand:SI 0 "arith_reg_dest")
        (plus:SI (and:SI (match_operand:SI 1 "arith_reg_operand")
                         (const_int 1))
                 (const_int 2147483647)))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1"
  "#"
  "&& can_create_pseudo_p ()"
  [(parallel [(set (match_dup 0)
                   (plus:SI (zero_extract:SI (match_dup 1)
                                             (const_int 1) (const_int 0))
                            (const_int 2147483647)))
              (clobber (reg:SI T_REG))])])

(define_insn_and_split "*mov_t_msb_neg"
  [(set (match_operand:SI 0 "arith_reg_dest")
        (plus:SI (match_operand 1 "treg_set_expr")
                 (const_int 2147483647)))  ;; 0x7fffffff
   (clobber (reg:SI T_REG))]
  "TARGET_SH1"
   "#"
   "&& can_create_pseudo_p ()"
  [(const_int 0)]
{
  if (negt_reg_operand (operands[1], VOIDmode))
    {
      emit_insn (gen_negc (operands[0],
                           force_reg (SImode, GEN_INT (-2147483648LL))));
      DONE;
    }

  sh_treg_insns ti = sh_split_treg_set_expr (operands[1], curr_insn);
  if (ti.remove_trailing_nott ())
    emit_insn (gen_negc (operands[0],
                         force_reg (SImode, GEN_INT (-2147483648LL))));
  else
    emit_insn (gen_addc (operands[0],
                         force_reg (SImode, const0_rtx),
                         force_reg (SImode, GEN_INT (2147483647))));
  DONE;
})

(define_insn_and_split "*mov_t_msb_neg"
  [(set (match_operand:SI 0 "arith_reg_dest")
        (if_then_else:SI (match_operand 1 "treg_set_expr")
                         (match_operand 2 "const_int_operand")
                         (match_operand 3 "const_int_operand")))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1 && can_create_pseudo_p ()
   && ((INTVAL (operands[2]) == -2147483648LL
        && INTVAL (operands[3]) == 2147483647LL)
       || (INTVAL (operands[2]) == 2147483647LL
           && INTVAL (operands[3]) == -2147483648LL))"
  "#"
  "&& 1"
  [(const_int 0)]
{
  sh_treg_insns ti = sh_split_treg_set_expr (operands[1], curr_insn);

  if (INTVAL (operands[2]) == -2147483648LL)
    {
      if (ti.remove_trailing_nott ())
        emit_insn (gen_negc (operands[0],
                             force_reg (SImode, GEN_INT (-2147483648LL))));
      else
        emit_insn (gen_addc (operands[0],
                             force_reg (SImode, const0_rtx),
                             force_reg (SImode, operands[3])));
      DONE;
    }
  else if (INTVAL (operands[2]) == 2147483647LL)
    {
      if (ti.remove_trailing_nott ())
        emit_insn (gen_addc (operands[0],
                             force_reg (SImode, const0_rtx),
                             force_reg (SImode, GEN_INT (2147483647LL))));
      else
        emit_insn (gen_negc (operands[0],
                             force_reg (SImode, GEN_INT (-2147483648LL))));
      DONE;
    }
  else
    gcc_unreachable ();
})

;; Store (negated) T bit as all zeros or ones in a reg.
;;      subc    Rn,Rn   ! Rn = Rn - Rn - T; T = T
;;      not     Rn,Rn   ! Rn = 0 - Rn
(define_insn_and_split "mov_neg_si_t"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r")
        (neg:SI (match_operand 1 "treg_set_expr")))]
  "TARGET_SH1"
{
  gcc_assert (t_reg_operand (operands[1], VOIDmode));
  return "subc  %0,%0";
}
  "&& can_create_pseudo_p () && !t_reg_operand (operands[1], VOIDmode)"
  [(const_int 0)]
{
  sh_treg_insns ti = sh_split_treg_set_expr (operands[1], curr_insn);
  emit_insn (gen_mov_neg_si_t (operands[0], get_t_reg_rtx ()));

  if (ti.remove_trailing_nott ())
    emit_insn (gen_one_cmplsi2 (operands[0], operands[0]));

  DONE;
}
  [(set_attr "type" "arith")])

;; Invert the T bit.
;; On SH2A we can use the nott insn.  On anything else this must be done with
;; multiple insns like:
;;      movt    Rn
;;      tst     Rn,Rn
;; This requires an additional pseudo.  The SH specific sh_treg_combine RTL
;; pass will look for this insn.  Disallow using it if pseudos can't be
;; created.
;; Don't split the nott inside the splitting of a treg_set_expr, or else
;; surrounding insns might not see and recombine it.  Defer the splitting
;; of the nott until after the whole insn containing the treg_set_expr
;; has been split.
(define_insn_and_split "nott"
  [(set (reg:SI T_REG)
        (xor:SI (match_operand:SI 0 "t_reg_operand") (const_int 1)))]
  "TARGET_SH2A || (TARGET_SH1 && can_create_pseudo_p ())"
{
  gcc_assert (TARGET_SH2A);
  return "nott";
}
  "!TARGET_SH2A && can_create_pseudo_p () && !sh_in_recog_treg_set_expr ()"
  [(set (match_dup 0) (reg:SI T_REG))
   (set (reg:SI T_REG) (eq:SI (match_dup 0) (const_int 0)))]
{
  operands[0] = gen_reg_rtx (SImode);
})

;; Store T bit as MSB in a reg.
;; T = 0: 0x00000000 -> reg
;; T = 1: 0x80000000 -> reg
(define_insn_and_split "*movt_msb"
  [(set (match_operand:SI 0 "arith_reg_dest")
        (mult:SI (match_operand:SI 1 "t_reg_operand")
                 (const_int -2147483648)))  ;; 0xffffffff80000000
   (clobber (reg:SI T_REG))]
  "TARGET_SH1"
  "#"
  "&& 1"
  [(set (match_dup 0) (ashift:SI (reg:SI T_REG) (const_int 31)))])

;; Store inverted T bit as MSB in a reg.
;; T = 0: 0x80000000 -> reg
;; T = 1: 0x00000000 -> reg
;; On SH2A we can get away without clobbering the T_REG using the movrt insn.
;; On non SH2A we resort to the following sequence:
;;      movt    Rn
;;      tst     Rn,Rn
;;      rotcr   Rn
;; The T bit value will be modified during the sequence, but the rotcr insn
;; will restore its original value.
(define_insn_and_split "*negt_msb"
  [(set (match_operand:SI 0 "arith_reg_dest")
        (match_operand:SI 1 "negt_reg_shl31_operand"))]
  "TARGET_SH1"
  "#"
  "&& can_create_pseudo_p ()"
  [(const_int 0)]
{
  rtx tmp = gen_reg_rtx (SImode);

  if (TARGET_SH2A)
    {
      emit_insn (gen_movrt (tmp, get_t_reg_rtx ()));
      emit_insn (gen_rotrsi3 (operands[0], tmp, const1_rtx));
    }
  else
    {
      emit_move_insn (tmp, get_t_reg_rtx ());
      emit_insn (gen_cmpeqsi_t (tmp, const0_rtx));
      emit_insn (gen_rotcr (operands[0], tmp, get_t_reg_rtx ()));
    }
  DONE;
})

;; The *cset_zero patterns convert optimizations such as
;;      "if (test) x = 0;"
;; to
;;      "x &= -(test == 0);"
;; back to conditional branch sequences if zero-displacement branches
;; are enabled.
;; FIXME: These patterns can be removed when conditional execution patterns
;; are implemented, since ifcvt will not perform these optimizations if
;; conditional execution is supported.
(define_insn "*cset_zero"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r")
        (and:SI (plus:SI (match_operand:SI 1 "t_reg_operand")
                         (const_int -1))
                (match_operand:SI 2 "arith_reg_operand" "0")))]
  "TARGET_SH1 && TARGET_ZDCBRANCH"
{
  return       "bf      0f"     "\n"
         "      mov     #0,%0"  "\n"
         "0:";
}
  [(set_attr "type" "arith") ;; poor approximation
   (set_attr "length" "4")])

(define_insn "*cset_zero"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r")
        (if_then_else:SI (match_operand:SI 1 "cbranch_treg_value")
                         (match_operand:SI 2 "arith_reg_operand" "0")
                         (const_int 0)))]
  "TARGET_SH1 && TARGET_ZDCBRANCH"
{
  int tval = sh_eval_treg_value (operands[1]);
  if (tval == true)
    return     "bt      0f"     "\n"
           "    mov     #0,%0"  "\n"
           "0:";
  else if (tval == false)
    return     "bf      0f"     "\n"
           "    mov     #0,%0"  "\n"
           "0:";
  else
    gcc_unreachable ();
}
  [(set_attr "type" "arith") ;; poor approximation
   (set_attr "length" "4")])

(define_insn_and_split "*cset_zero"
  [(set (match_operand:SI 0 "arith_reg_dest")
        (if_then_else:SI (match_operand 1 "treg_set_expr_not_const01")
                         (match_dup 0) (const_int 0)))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1 && TARGET_ZDCBRANCH && can_create_pseudo_p ()"
  "#"
  "&& 1"
  [(set (match_dup 0)
        (if_then_else:SI (match_dup 1) (match_dup 0) (const_int 0)))]
{
  sh_treg_insns ti = sh_split_treg_set_expr (operands[1], curr_insn);
  if (ti.remove_trailing_nott ())
    operands[1] = gen_rtx_EQ (SImode, get_t_reg_rtx (), const0_rtx);
  else
    operands[1] = gen_rtx_EQ (SImode, get_t_reg_rtx (), const1_rtx);
})

(define_expand "cstoresf4"
  [(set (match_operand:SI 0 "register_operand")
        (match_operator:SI 1 "ordered_comparison_operator"
         [(match_operand:SF 2 "arith_operand")
          (match_operand:SF 3 "arith_operand")]))]
  "TARGET_SH2E"
{
  if (! currently_expanding_to_rtl)
    FAIL;
   
  sh_emit_compare_and_set (operands, SFmode);
  DONE;
})

(define_expand "cstoredf4"
  [(set (match_operand:SI 0 "register_operand")
        (match_operator:SI 1 "ordered_comparison_operator"
         [(match_operand:DF 2 "arith_operand")
          (match_operand:DF 3 "arith_operand")]))]
  "TARGET_FPU_DOUBLE"
{
  if (! currently_expanding_to_rtl)
    FAIL;
   
  sh_emit_compare_and_set (operands, DFmode);
  DONE;
})

;; Sometimes the T bit result of insns is needed in normal registers.
;; Instead of open coding all the pattern variations, use the treg_set_expr
;; predicate to match any T bit output insn and split it out after.
;; This pattern should be below all other related patterns so that it is
;; considered as a last resort option during matching.   This allows
;; overriding it with special case patterns.
(define_insn_and_split "any_treg_expr_to_reg"
  [(set (match_operand:SI 0 "arith_reg_dest")
        (match_operand 1 "treg_set_expr"))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1 && can_create_pseudo_p ()"
  "#"
  "&& !sh_in_recog_treg_set_expr ()"
  [(const_int 0)]
{
  if (dump_file)
    fprintf (dump_file, "splitting any_treg_expr_to_reg\n");

  if (t_reg_operand (operands[1], VOIDmode))
    {
      if (dump_file)
        fprintf (dump_file, "t_reg_operand: emitting movt\n");
      emit_insn (gen_movt (operands[0], get_t_reg_rtx ()));
      DONE;
    }
  if (negt_reg_operand (operands[1], VOIDmode))
    {
      if (dump_file)
        fprintf (dump_file, "negt_reg_operand: emitting movrt\n");
      emit_insn (gen_movnegt (operands[0], get_t_reg_rtx ()));
      DONE;
    }

  /* If the split out insns ended with a nott, emit a movrt sequence,
     otherwise a normal movt.  */
  sh_treg_insns ti = sh_split_treg_set_expr (operands[1], curr_insn);
  rtx_insn* i = NULL;
  if (ti.remove_trailing_nott ())
    {
      /* Emit this same insn_and_split again.  However, the next time it
         is split, it will emit the actual negc/movrt insn.  This gives
         other surrounding insns the chance to see the trailing movrt.  */
      if (dump_file)
        fprintf (dump_file,
                 "any_treg_expr_to_reg: replacing trailing nott with movrt\n");
      i = emit_insn (gen_any_treg_expr_to_reg (
                        operands[0], gen_rtx_XOR (SImode, get_t_reg_rtx (),
                        const1_rtx)));
    }
  else
    {
      i = emit_insn (gen_movt (operands[0], get_t_reg_rtx ()));
      if (dump_file)
        fprintf (dump_file, "any_treg_expr_to_reg: appending movt\n");
    }

  add_reg_note (i, REG_UNUSED, get_t_reg_rtx ());
  DONE;
})

;; -------------------------------------------------------------------------
;; Instructions to cope with inline literal tables
;; -------------------------------------------------------------------------

;; 2 byte integer in line
(define_insn "consttable_2"
 [(unspec_volatile [(match_operand:SI 0 "general_operand" "=g")
                    (match_operand 1 "" "")]
                   UNSPECV_CONST2)]
 ""
{
  if (operands[1] != const0_rtx)
    assemble_integer (operands[0], 2, BITS_PER_UNIT * 2, 1);
  return "";
}
 [(set_attr "length" "2")
 (set_attr "in_delay_slot" "no")])

;; 4 byte integer in line
(define_insn "consttable_4"
 [(unspec_volatile [(match_operand:SI 0 "general_operand" "=g")
                    (match_operand 1 "" "")]
                   UNSPECV_CONST4)]
 ""
{
  if (operands[1] != const0_rtx)
    {
      assemble_integer (operands[0], 4, BITS_PER_UNIT * 4, 1);
      mark_symbol_refs_as_used (operands[0]);
    }
  return "";
}
 [(set_attr "length" "4")
  (set_attr "in_delay_slot" "no")])

;; 8 byte integer in line
(define_insn "consttable_8"
 [(unspec_volatile [(match_operand:SI 0 "general_operand" "=g")
                    (match_operand 1 "" "")]
                   UNSPECV_CONST8)]
 ""
{
  if (operands[1] != const0_rtx)
    assemble_integer (operands[0], 8, BITS_PER_UNIT * 8, 1);
  return "";
}
 [(set_attr "length" "8")
  (set_attr "in_delay_slot" "no")])

;; 4 byte floating point
(define_insn "consttable_sf"
 [(unspec_volatile [(match_operand:SF 0 "general_operand" "=g")
                    (match_operand 1 "" "")]
                   UNSPECV_CONST4)]
 ""
{
  if (operands[1] != const0_rtx)
    assemble_real (*CONST_DOUBLE_REAL_VALUE (operands[0]),
                   SFmode, GET_MODE_ALIGNMENT (SFmode));
  return "";
}
 [(set_attr "length" "4")
  (set_attr "in_delay_slot" "no")])

;; 8 byte floating point
(define_insn "consttable_df"
 [(unspec_volatile [(match_operand:DF 0 "general_operand" "=g")
                    (match_operand 1 "" "")]
                   UNSPECV_CONST8)]
 ""
{
  if (operands[1] != const0_rtx)
    assemble_real (*CONST_DOUBLE_REAL_VALUE (operands[0]),
                   DFmode, GET_MODE_ALIGNMENT (DFmode));
  return "";
}
 [(set_attr "length" "8")
  (set_attr "in_delay_slot" "no")])

;; Alignment is needed for some constant tables; it may also be added for
;; Instructions at the start of loops, or after unconditional branches.
;; ??? We would get more accurate lengths if we did instruction
;; alignment based on the value of INSN_CURRENT_ADDRESS; the approach used
;; here is too conservative.

;; align to a two byte boundary
(define_expand "align_2"
 [(unspec_volatile [(const_int 1)] UNSPECV_ALIGN)]
 ""
 "")

;; Align to a four byte boundary.
;; align_4 and align_log are instructions for the starts of loops, or
;; after unconditional branches, which may take up extra room.
(define_expand "align_4"
 [(unspec_volatile [(const_int 2)] UNSPECV_ALIGN)]
 ""
 "")

;; Align to a cache line boundary.
(define_insn "align_log"
 [(unspec_volatile [(match_operand 0 "const_int_operand" "")] UNSPECV_ALIGN)]
 ""
 ""
 [(set_attr "length" "0")
  (set_attr "in_delay_slot" "no")])

;; Emitted at the end of the literal table, used to emit the
;; 32bit branch labels if needed.
(define_insn "consttable_end"
  [(unspec_volatile [(const_int 0)] UNSPECV_CONST_END)]
  ""
{
  return output_jump_label_table ();
}
  [(set_attr "in_delay_slot" "no")])

;; Emitted at the end of the window in the literal table.
(define_insn "consttable_window_end"
  [(unspec_volatile [(match_operand 0 "" "")] UNSPECV_WINDOW_END)]
  ""
  ""
  [(set_attr "length" "0")
   (set_attr "in_delay_slot" "no")])

;; -------------------------------------------------------------------------
;; Minimum / maximum operations.
;; -------------------------------------------------------------------------

;; The SH2A clips.b and clips.w insns do a signed min-max function.  If smin
;; and smax standard name patterns are defined, they will be used during
;; initial expansion and combine will then be able to form the actual min-max
;; pattern.
;; The clips.b and clips.w set the SR.CS bit if the value in the register is
;; clipped, but there is currently no way of making use of this information.
;; The only way to read or reset the SR.CS bit is by accessing the SR.
(define_expand "<code>si3"
  [(parallel [(set (match_operand:SI 0 "arith_reg_dest")
                   (SMIN_SMAX:SI (match_operand:SI 1 "arith_reg_operand")
                                 (match_operand 2 "const_int_operand")))
              (clobber (reg:SI T_REG))])]
  "TARGET_SH2A"
{
  /* Force the comparison value into a register, because greater-than
     comparisons can work only on registers.  Combine will be able to pick up
     the constant value from the REG_EQUAL note when trying to form a min-max
     pattern.  */
  operands[2] = force_reg (SImode, operands[2]);
})

;; Convert
;;      smax (smin (...))
;; to
;;      smin (smax (...))
(define_insn_and_split "*clips"
  [(set (match_operand:SI 0 "arith_reg_dest")
        (smax:SI (smin:SI (match_operand:SI 1 "arith_reg_operand")
                          (match_operand 2 "clips_max_const_int"))
                 (match_operand 3 "clips_min_const_int")))]
  "TARGET_SH2A"
  "#"
  "&& 1"
  [(set (match_dup 0)
        (smin:SI (smax:SI (match_dup 1) (match_dup 3)) (match_dup 2)))])

(define_insn "*clips"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r")
        (smin:SI (smax:SI (match_operand:SI 1 "arith_reg_operand" "0")
                          (match_operand 2 "clips_min_const_int"))
                 (match_operand 3 "clips_max_const_int")))]
  "TARGET_SH2A"
{
  if (INTVAL (operands[3]) == 127)
    return "clips.b     %0";
  else if (INTVAL (operands[3]) == 32767)
    return "clips.w     %0";
  else
    gcc_unreachable ();
}
  [(set_attr "type" "arith")])

;; If the expanded smin or smax patterns were not combined, split them into
;; a compare and branch sequence, because there are no real smin or smax
;; insns.
(define_insn_and_split "*<code>si3"
  [(set (match_operand:SI 0 "arith_reg_dest")
        (SMIN_SMAX:SI (match_operand:SI 1 "arith_reg_operand")
                      (match_operand:SI 2 "arith_reg_or_0_or_1_operand")))
   (clobber (reg:SI T_REG))]
  "TARGET_SH2A && can_create_pseudo_p ()"
  "#"
  "&& 1"
  [(const_int 0)]
{
  rtx_code_label *skip_label = gen_label_rtx ();
  emit_move_insn (operands[0], operands[1]);

  rtx cmp_val = operands[2];
  if (satisfies_constraint_M (cmp_val))
    cmp_val = const0_rtx;

  emit_insn (gen_cmpgtsi_t (operands[0], cmp_val));
  emit_jump_insn (<CODE> == SMIN
                            ? gen_branch_false (skip_label)
                            : gen_branch_true (skip_label));

  emit_label_after (skip_label, emit_move_insn (operands[0], operands[2]));
  DONE;
})

;; The SH2A clipu.b and clipu.w insns can be used to implement a min function
;; with a register and a constant.
;; The clipu.b and clipu.w set the SR.CS bit if the value in the register is
;; clipped, but there is currently no way of making use of this information.
;; The only way to read or reset the SR.CS bit is by accessing the SR.
(define_expand "uminsi3"
  [(set (match_operand:SI 0 "arith_reg_dest")
        (umin:SI (match_operand:SI 1 "arith_reg_operand")
                 (match_operand 2 "const_int_operand")))]
  "TARGET_SH2A"
{
  if (INTVAL (operands[2]) == 1)
    {
      emit_insn (gen_clipu_one (operands[0], operands[1]));
      DONE;
    }
  else if (! clipu_max_const_int (operands[2], VOIDmode))
    FAIL;
})

(define_insn "*clipu"
  [(set (match_operand:SI 0 "arith_reg_dest" "=r")
        (umin:SI (match_operand:SI 1 "arith_reg_operand" "0")
                 (match_operand 2 "clipu_max_const_int")))]
  "TARGET_SH2A"
{
  if (INTVAL (operands[2]) == 255)
    return "clipu.b     %0";
  else if (INTVAL (operands[2]) == 65535)
    return "clipu.w     %0";
  else
    gcc_unreachable ();
}
  [(set_attr "type" "arith")])

(define_insn_and_split "clipu_one"
  [(set (match_operand:SI 0 "arith_reg_dest")
        (umin:SI (match_operand:SI 1 "arith_reg_operand") (const_int 1)))
   (clobber (reg:SI T_REG))]
  "TARGET_SH2A"
  "#"
  "&& can_create_pseudo_p ()"
  [(const_int 0)]
{
  emit_insn (gen_cmpeqsi_t (operands[1], const0_rtx));
  emit_insn (gen_movnegt (operands[0], get_t_reg_rtx ()));
  DONE;
})

;; -------------------------------------------------------------------------
;; Misc
;; -------------------------------------------------------------------------

;; String/block move insn.

(define_expand "movmemsi"
  [(parallel [(set (mem:BLK (match_operand:BLK 0))
                   (mem:BLK (match_operand:BLK 1)))
              (use (match_operand:SI 2 "nonmemory_operand"))
              (use (match_operand:SI 3 "immediate_operand"))
              (clobber (reg:SI PR_REG))
              (clobber (reg:SI R4_REG))
              (clobber (reg:SI R5_REG))
              (clobber (reg:SI R0_REG))])]
  "TARGET_SH1"
{
  if (expand_block_move (operands))
    DONE;
  else
    FAIL;
})

(define_insn "block_move_real"
  [(parallel [(set (mem:BLK (reg:SI R4_REG))
                   (mem:BLK (reg:SI R5_REG)))
              (use (match_operand:SI 0 "arith_reg_operand" "r,r"))
              (use (match_operand 1 "" "Z,Ccl"))
              (clobber (reg:SI PR_REG))
              (clobber (reg:SI R0_REG))])]
  "TARGET_SH1 && ! TARGET_HARD_SH4"
  "@
        jsr     @%0%#
        bsrf    %0\n%O1:%#"
  [(set_attr "type" "sfunc")
   (set_attr "needs_delay_slot" "yes")])

(define_insn "block_lump_real"
  [(parallel [(set (mem:BLK (reg:SI R4_REG))
                   (mem:BLK (reg:SI R5_REG)))
              (use (match_operand:SI 0 "arith_reg_operand" "r,r"))
              (use (match_operand 1 "" "Z,Ccl"))
              (use (reg:SI R6_REG))
              (clobber (reg:SI PR_REG))
              (clobber (reg:SI T_REG))
              (clobber (reg:SI R4_REG))
              (clobber (reg:SI R5_REG))
              (clobber (reg:SI R6_REG))
              (clobber (reg:SI R0_REG))])]
  "TARGET_SH1 && ! TARGET_HARD_SH4"
  "@
        jsr     @%0%#
        bsrf    %0\n%O1:%#"
  [(set_attr "type" "sfunc")
   (set_attr "needs_delay_slot" "yes")])

(define_insn "block_move_real_i4"
  [(parallel [(set (mem:BLK (reg:SI R4_REG))
                   (mem:BLK (reg:SI R5_REG)))
              (use (match_operand:SI 0 "arith_reg_operand" "r,r"))
              (use (match_operand 1 "" "Z,Ccl"))
              (clobber (reg:SI PR_REG))
              (clobber (reg:SI R0_REG))
              (clobber (reg:SI R1_REG))
              (clobber (reg:SI R2_REG))])]
  "TARGET_HARD_SH4"
  "@
        jsr     @%0%#
        bsrf    %0\n%O1:%#"
  [(set_attr "type" "sfunc")
   (set_attr "needs_delay_slot" "yes")])

(define_insn "block_lump_real_i4"
  [(parallel [(set (mem:BLK (reg:SI R4_REG))
                   (mem:BLK (reg:SI R5_REG)))
              (use (match_operand:SI 0 "arith_reg_operand" "r,r"))
              (use (match_operand 1 "" "Z,Ccl"))
              (use (reg:SI R6_REG))
              (clobber (reg:SI PR_REG))
              (clobber (reg:SI T_REG))
              (clobber (reg:SI R4_REG))
              (clobber (reg:SI R5_REG))
              (clobber (reg:SI R6_REG))
              (clobber (reg:SI R0_REG))
              (clobber (reg:SI R1_REG))
              (clobber (reg:SI R2_REG))
              (clobber (reg:SI R3_REG))])]
  "TARGET_HARD_SH4"
  "@
        jsr     @%0%#
        bsrf    %0\n%O1:%#"
  [(set_attr "type" "sfunc")
   (set_attr "needs_delay_slot" "yes")])

;; byte compare pattern
;; temp = a ^ b;
;; !((temp & 0xF000) && (temp & 0x0F00) && (temp & 0x00F0) && (temp & 0x000F))
(define_insn "cmpstr_t"
  [(set (reg:SI T_REG)
        (eq:SI (and:SI
                 (and:SI
                   (and:SI
                     (zero_extract:SI
                       (xor:SI (match_operand:SI 0 "arith_reg_operand" "r")
                               (match_operand:SI 1 "arith_reg_operand" "r"))
                       (const_int 8) (const_int 0))
                     (zero_extract:SI (xor:SI (match_dup 0) (match_dup 1))
                                      (const_int 8) (const_int 8)))
                    (zero_extract:SI (xor:SI (match_dup 0) (match_dup 1))
                                     (const_int 8) (const_int 16)))
                 (zero_extract:SI (xor:SI (match_dup 0) (match_dup 1))
                                  (const_int 8) (const_int 24)))
               (const_int 0)))]
  "TARGET_SH1"
  "cmp/str      %0,%1"
  [(set_attr "type" "mt_group")])

(define_expand "cmpstrsi"
  [(set (match_operand:SI 0 "register_operand")
        (compare:SI (match_operand:BLK 1 "memory_operand")
                    (match_operand:BLK 2 "memory_operand")))
   (use (match_operand 3 "immediate_operand"))]
  "TARGET_SH1 && optimize"
{
  if (! optimize_insn_for_size_p () && sh_expand_cmpstr (operands))
    DONE;
  else
    FAIL;
})

(define_expand "cmpstrnsi"
  [(set (match_operand:SI 0 "register_operand")
        (compare:SI (match_operand:BLK 1 "memory_operand")
                    (match_operand:BLK 2 "memory_operand")))
   (use (match_operand:SI 3 "nonmemory_operand"))
   (use (match_operand:SI 4 "immediate_operand"))]
  "TARGET_SH1 && optimize"
{
  if (! optimize_insn_for_size_p () && sh_expand_cmpnstr (operands))
    DONE;
  else
    FAIL;
})

(define_expand "strlensi"
  [(set (match_operand:SI 0 "register_operand")
        (unspec:SI [(match_operand:BLK 1 "memory_operand")
                   (match_operand:SI 2 "immediate_operand")
                   (match_operand:SI 3 "immediate_operand")]
                  UNSPEC_BUILTIN_STRLEN))]
  "TARGET_SH1 && optimize"
{
 if (! optimize_insn_for_size_p () && sh_expand_strlen (operands))
   DONE;
 else
   FAIL;
})

(define_expand "setmemqi"
  [(parallel [(set (match_operand:BLK 0 "memory_operand")
                   (match_operand 2 "const_int_operand"))
              (use (match_operand:QI 1 "const_int_operand"))
              (use (match_operand:QI 3 "const_int_operand"))])]
  "TARGET_SH1 && optimize"
  {
    if (optimize_insn_for_size_p ())
       FAIL;

    sh_expand_setmem (operands);
    DONE;
  })

\f
;; -------------------------------------------------------------------------
;; Floating point instructions.
;; -------------------------------------------------------------------------

;; FIXME: For now we disallow any memory operands for fpscr loads/stores,
;; except for post-inc loads and pre-dec stores for push/pop purposes.
;; This avoids problems with reload.  As a consequence, user initiated fpscr
;; stores to memory will always be ferried through a general register.
;; User initiated fpscr loads always have to undergo bit masking to preserve
;; the current fpu mode settings for the compiler generated code.  Thus such
;; fpscr loads will always have to go through general registers anyways.
(define_insn "lds_fpscr"
  [(set (reg:SI FPSCR_REG)
        (match_operand:SI 0 "fpscr_movsrc_operand" "r,>"))
   (set (reg:SI FPSCR_STAT_REG)
        (unspec_volatile:SI [(const_int 0)] UNSPECV_FPSCR_STAT))
   (set (reg:SI FPSCR_MODES_REG)
        (unspec_volatile:SI [(const_int 0)] UNSPECV_FPSCR_MODES))]
  "TARGET_FPU_ANY"
  "@
        lds     %0,fpscr
        lds.l   %0,fpscr"
  [(set_attr "type" "gp_fpscr,mem_fpscr")])

;; A move fpscr -> reg schedules like a move mac -> reg.  Thus we use mac_gp
;; type for it.
(define_insn "sts_fpscr"
  [(set (match_operand:SI 0 "fpscr_movdst_operand" "=r,<")
        (reg:SI FPSCR_REG))
   (use (reg:SI FPSCR_STAT_REG))
   (use (reg:SI FPSCR_MODES_REG))]
  "TARGET_FPU_ANY"
  "@
        sts     fpscr,%0
        sts.l   fpscr,%0"
  [(set_attr "type" "mac_gp,fstore")])

(define_expand "set_fpscr"
  [(parallel [(set (reg:SI FPSCR_REG)
                   (match_operand:SI 0 "general_operand"))
              (set (reg:SI FPSCR_STAT_REG)
                   (unspec_volatile:SI [(const_int 0)] UNSPECV_FPSCR_MODES))])]
  "TARGET_FPU_ANY"
{
  /* We have to mask out the FR, SZ and PR bits.  To do that, we need to
     get the current FPSCR value first.
     (a & ~mask) | (b & mask) = a ^ ((a ^ b) & mask)  */

  rtx mask = force_reg (SImode, GEN_INT (FPSCR_FR | FPSCR_SZ | FPSCR_PR));

  rtx a = force_reg (SImode, operands[0]);

  rtx b = gen_reg_rtx (SImode);
  emit_insn (gen_sts_fpscr (b));

  rtx a_xor_b = gen_reg_rtx (SImode);
  emit_insn (gen_xorsi3 (a_xor_b, a, b));

  rtx a_xor_b_and_mask = gen_reg_rtx (SImode);
  emit_insn (gen_andsi3 (a_xor_b_and_mask, a_xor_b, mask));

  rtx r = gen_reg_rtx (SImode);
  emit_insn (gen_xorsi3 (r, a_xor_b_and_mask, a));
  emit_insn (gen_lds_fpscr (r));

  DONE;
})

;; ??? This uses the fp unit, but has no type indicating that.
;; If we did that, this would either give a bogus latency or introduce
;; a bogus FIFO constraint.
;; Since this insn is currently only used for prologues/epilogues,
;; it is probably best to claim no function unit, which matches the
;; current setting.
(define_insn "toggle_sz"
  [(set (reg:SI FPSCR_REG)
        (xor:SI (reg:SI FPSCR_REG) (const_int FPSCR_SZ)))
   (set (reg:SI FPSCR_MODES_REG)
        (unspec_volatile:SI [(const_int 0)] UNSPECV_FPSCR_MODES))]
  "TARGET_FPU_DOUBLE"
  "fschg"
  [(set_attr "type" "fpscr_toggle") (set_attr "fp_set" "unknown")])

;; Toggle FPU precision PR mode.

(define_insn "toggle_pr"
  [(set (reg:SI FPSCR_REG)
        (xor:SI (reg:SI FPSCR_REG) (const_int FPSCR_PR)))
   (set (reg:SI FPSCR_MODES_REG)
        (unspec_volatile:SI [(const_int 0)] UNSPECV_FPSCR_MODES))]
  "TARGET_SH4A_FP"
  "fpchg"
  [(set_attr "type" "fpscr_toggle")])

(define_expand "addsf3"
  [(set (match_operand:SF 0 "fp_arith_reg_operand")
        (plus:SF (match_operand:SF 1 "fp_arith_reg_operand")
                 (match_operand:SF 2 "fp_arith_reg_operand")))]
  "TARGET_SH2E"
{
  emit_insn (gen_addsf3_i (operands[0], operands[1], operands[2]));
  DONE;
})

(define_insn "addsf3_i"
  [(set (match_operand:SF 0 "fp_arith_reg_operand" "=f")
        (plus:SF (match_operand:SF 1 "fp_arith_reg_operand" "%0")
                 (match_operand:SF 2 "fp_arith_reg_operand" "f")))
   (clobber (reg:SI FPSCR_STAT_REG))
   (use (reg:SI FPSCR_MODES_REG))]
  "TARGET_SH2E"
  "fadd %2,%0"
  [(set_attr "type" "fp")
   (set_attr "fp_mode" "single")])

(define_expand "subsf3"
  [(set (match_operand:SF 0 "fp_arith_reg_operand" "")
        (minus:SF (match_operand:SF 1 "fp_arith_reg_operand" "")
                  (match_operand:SF 2 "fp_arith_reg_operand" "")))]
  "TARGET_SH2E"
{
  emit_insn (gen_subsf3_i (operands[0], operands[1], operands[2]));
  DONE;
})

(define_insn "subsf3_i"
  [(set (match_operand:SF 0 "fp_arith_reg_operand" "=f")
        (minus:SF (match_operand:SF 1 "fp_arith_reg_operand" "0")
                 (match_operand:SF 2 "fp_arith_reg_operand" "f")))
   (clobber (reg:SI FPSCR_STAT_REG))
   (use (reg:SI FPSCR_MODES_REG))]
  "TARGET_SH2E"
  "fsub %2,%0"
  [(set_attr "type" "fp")
   (set_attr "fp_mode" "single")])

(define_expand "mulsf3"
  [(set (match_operand:SF 0 "fp_arith_reg_operand" "")
        (mult:SF (match_operand:SF 1 "fp_arith_reg_operand" "")
                 (match_operand:SF 2 "fp_arith_reg_operand" "")))]
  "TARGET_SH2E"
{
  emit_insn (gen_mulsf3_i (operands[0], operands[1], operands[2]));
  DONE;
})

(define_insn "mulsf3_i"
  [(set (match_operand:SF 0 "fp_arith_reg_operand" "=f")
        (mult:SF (match_operand:SF 1 "fp_arith_reg_operand" "%0")
                 (match_operand:SF 2 "fp_arith_reg_operand" "f")))
   (clobber (reg:SI FPSCR_STAT_REG))
   (use (reg:SI FPSCR_MODES_REG))]
  "TARGET_SH2E"
  "fmul %2,%0"
  [(set_attr "type" "fp")
   (set_attr "fp_mode" "single")])

;; FMA (fused multiply-add) patterns
(define_expand "fmasf4"
  [(set (match_operand:SF 0 "fp_arith_reg_operand")
        (fma:SF (match_operand:SF 1 "fp_arith_reg_operand")
                (match_operand:SF 2 "fp_arith_reg_operand")
                (match_operand:SF 3 "fp_arith_reg_operand")))]
  "TARGET_SH2E"
{
  emit_insn (gen_fmasf4_i (operands[0], operands[1], operands[2], operands[3]));
  DONE;
})

(define_insn "fmasf4_i"
  [(set (match_operand:SF 0 "fp_arith_reg_operand" "=f")
        (fma:SF (match_operand:SF 1 "fp_arith_reg_operand" "w")
                (match_operand:SF 2 "fp_arith_reg_operand" "f")
                (match_operand:SF 3 "fp_arith_reg_operand" "0")))
   (clobber (reg:SI FPSCR_STAT_REG))
   (use (reg:SI FPSCR_MODES_REG))]
  "TARGET_SH2E"
  "fmac %1,%2,%0"
  [(set_attr "type" "fp")
   (set_attr "fp_mode" "single")])

;; For some cases such as 'a * b + a' the FMA pattern is not generated by
;; previous transformations.  If FMA is generally allowed, let the combine
;; pass utilize it.
(define_insn_and_split "*fmasf4"
  [(set (match_operand:SF 0 "fp_arith_reg_operand" "=f")
        (plus:SF (mult:SF (match_operand:SF 1 "fp_arith_reg_operand" "%w")
                          (match_operand:SF 2 "fp_arith_reg_operand" "f"))
                 (match_operand:SF 3 "arith_reg_operand" "0")))
   (clobber (reg:SI FPSCR_STAT_REG))
   (use (reg:SI FPSCR_MODES_REG))]
  "TARGET_SH2E && flag_fp_contract_mode != FP_CONTRACT_OFF"
  "fmac %1,%2,%0"
  "&& can_create_pseudo_p ()"
  [(parallel [(set (match_dup 0)
                   (fma:SF (match_dup 1) (match_dup 2) (match_dup 3)))
              (clobber (reg:SI FPSCR_STAT_REG))
              (use (reg:SI FPSCR_MODES_REG))])]
{
  /* Change 'b * a + a' into 'a * b + a'.
     This is better for register allocation.  */
  if (REGNO (operands[2]) == REGNO (operands[3]))
    std::swap (operands[1], operands[2]);
}
  [(set_attr "type" "fp")
   (set_attr "fp_mode" "single")])

(define_expand "divsf3"
  [(set (match_operand:SF 0 "fp_arith_reg_operand")
        (div:SF (match_operand:SF 1 "fp_arith_reg_operand")
                (match_operand:SF 2 "fp_arith_reg_operand")))]
  "TARGET_SH2E"
{
  emit_insn (gen_divsf3_i (operands[0], operands[1], operands[2]));
  DONE;
})

(define_insn "divsf3_i"
  [(set (match_operand:SF 0 "fp_arith_reg_operand" "=f")
        (div:SF (match_operand:SF 1 "fp_arith_reg_operand" "0")
                 (match_operand:SF 2 "fp_arith_reg_operand" "f")))
   (clobber (reg:SI FPSCR_STAT_REG))
   (use (reg:SI FPSCR_MODES_REG))]
  "TARGET_SH2E"
  "fdiv %2,%0"
  [(set_attr "type" "fdiv")
   (set_attr "fp_mode" "single")])

(define_expand "floatsisf2"
  [(set (match_operand:SF 0 "fp_arith_reg_operand" "")
        (float:SF (match_operand:SI 1 "fpul_operand" "")))]
  "TARGET_SH2E"
{
  emit_insn (gen_floatsisf2_i4 (operands[0], operands[1]));
  DONE;
})

(define_insn "floatsisf2_i4"
  [(set (match_operand:SF 0 "fp_arith_reg_operand" "=f")
        (float:SF (match_operand:SI 1 "fpul_operand" "y")))
   (clobber (reg:SI FPSCR_STAT_REG))
   (use (reg:SI FPSCR_MODES_REG))]
  "TARGET_SH2E"
  "float        %1,%0"
  [(set_attr "type" "fp")
   (set_attr "fp_mode" "single")])

(define_expand "fix_truncsfsi2"
  [(set (match_operand:SI 0 "fpul_operand")
        (fix:SI (match_operand:SF 1 "fp_arith_reg_operand")))]
  "TARGET_SH2E"
{
  emit_insn (gen_fix_truncsfsi2_i4 (operands[0], operands[1]));
  DONE;
})

(define_insn "fix_truncsfsi2_i4"
  [(set (match_operand:SI 0 "fpul_operand" "=y")
        (fix:SI (match_operand:SF 1 "fp_arith_reg_operand" "f")))
   (clobber (reg:SI FPSCR_STAT_REG))
   (use (reg:SI FPSCR_MODES_REG))]
  "TARGET_SH2E"
  "ftrc %1,%0"
  [(set_attr "type" "ftrc_s")
   (set_attr "fp_mode" "single")])

(define_insn "cmpgtsf_t"
  [(set (reg:SI T_REG)
        (gt:SI (match_operand:SF 0 "fp_arith_reg_operand" "f")
               (match_operand:SF 1 "fp_arith_reg_operand" "f")))
   (clobber (reg:SI FPSCR_STAT_REG))
   (use (reg:SI FPSCR_MODES_REG))]
  "TARGET_SH2E || TARGET_SH4 || TARGET_SH2A_SINGLE"
  "fcmp/gt      %1,%0"
  [(set_attr "type" "fp_cmp")
   (set_attr "fp_mode" "single")])

(define_insn "cmpeqsf_t"
  [(set (reg:SI T_REG)
        (eq:SI (match_operand:SF 0 "fp_arith_reg_operand" "f")
               (match_operand:SF 1 "fp_arith_reg_operand" "f")))
   (clobber (reg:SI FPSCR_STAT_REG))
   (use (reg:SI FPSCR_MODES_REG))]
  "TARGET_SH2E || TARGET_SH4 || TARGET_SH2A_SINGLE"
  "fcmp/eq      %1,%0"
  [(set_attr "type" "fp_cmp")
   (set_attr "fp_mode" "single")])

(define_insn "ieee_ccmpeqsf_t"
  [(set (reg:SI T_REG)
        (ior:SI (reg:SI T_REG)
                (eq:SI (match_operand:SF 0 "fp_arith_reg_operand" "f")
                       (match_operand:SF 1 "fp_arith_reg_operand" "f"))))
   (clobber (reg:SI FPSCR_STAT_REG))
   (use (reg:SI FPSCR_MODES_REG))]
  "TARGET_IEEE && TARGET_SH2E"
{
  return output_ieee_ccmpeq (insn, operands);
}
  [(set_attr "length" "4")
   (set_attr "fp_mode" "single")])

(define_expand "cbranchsf4"
  [(set (pc)
        (if_then_else (match_operator 0 "ordered_comparison_operator"
                       [(match_operand:SF 1 "arith_operand" "")
                        (match_operand:SF 2 "arith_operand" "")])
                      (match_operand 3 "" "")
                      (pc)))]
  "TARGET_SH2E"
{
  sh_emit_compare_and_branch (operands, SFmode);
  DONE;
})

(define_expand "negsf2"
  [(set (match_operand:SF 0 "fp_arith_reg_operand")
        (neg:SF (match_operand:SF 1 "fp_arith_reg_operand")))]
  "TARGET_SH2E")

(define_insn "*negsf2_i"
  [(set (match_operand:SF 0 "fp_arith_reg_operand" "=f")
        (neg:SF (match_operand:SF 1 "fp_arith_reg_operand" "0")))]
  "TARGET_SH2E"
  "fneg %0"
  [(set_attr "type" "fmove")])

(define_expand "sqrtsf2"
  [(set (match_operand:SF 0 "fp_arith_reg_operand" "")
        (sqrt:SF (match_operand:SF 1 "fp_arith_reg_operand" "")))]
  "TARGET_SH3E"
{
  emit_insn (gen_sqrtsf2_i (operands[0], operands[1]));
  DONE;
})

(define_insn "sqrtsf2_i"
  [(set (match_operand:SF 0 "fp_arith_reg_operand" "=f")
        (sqrt:SF (match_operand:SF 1 "fp_arith_reg_operand" "0")))
   (clobber (reg:SI FPSCR_STAT_REG))
   (use (reg:SI FPSCR_MODES_REG))]
  "TARGET_SH3E"
  "fsqrt        %0"
  [(set_attr "type" "fdiv")
   (set_attr "fp_mode" "single")])

(define_insn "rsqrtsf2"
  [(set (match_operand:SF 0 "fp_arith_reg_operand" "=f")
        (unspec:SF [(match_operand:SF 1 "fp_arith_reg_operand" "0")]
                   UNSPEC_FSRRA))
   (clobber (reg:SI FPSCR_STAT_REG))
   (use (reg:SI FPSCR_MODES_REG))]
  "TARGET_FPU_ANY && TARGET_FSRRA"
  "fsrra        %0"
  [(set_attr "type" "fsrra")
   (set_attr "fp_mode" "single")])

;; When the sincos pattern is defined, the builtin functions sin and cos
;; will be expanded to the sincos pattern and one of the output values will
;; remain unused.
(define_expand "sincossf3"
  [(set (match_operand:SF 0 "nonimmediate_operand")
        (unspec:SF [(match_operand:SF 2 "fp_arith_reg_operand")] UNSPEC_FCOSA))
   (set (match_operand:SF 1 "nonimmediate_operand")
        (unspec:SF [(match_dup 2)] UNSPEC_FSINA))]
  "TARGET_FPU_ANY && TARGET_FSCA"
{
  rtx scaled = gen_reg_rtx (SFmode);
  rtx truncated = gen_reg_rtx (SImode);
  rtx fsca = gen_reg_rtx (V2SFmode);
  rtx scale_reg = force_reg (SFmode, sh_fsca_sf2int ());

  emit_insn (gen_mulsf3 (scaled, operands[2], scale_reg));
  emit_insn (gen_fix_truncsfsi2 (truncated, scaled));
  emit_insn (gen_fsca (fsca, truncated, sh_fsca_int2sf ()));

  emit_move_insn (operands[0], gen_rtx_SUBREG (SFmode, fsca, 4));
  emit_move_insn (operands[1], gen_rtx_SUBREG (SFmode, fsca, 0));
  DONE;
})

(define_insn_and_split "fsca"
  [(set (match_operand:V2SF 0 "fp_arith_reg_operand" "=f")
        (vec_concat:V2SF
         (unspec:SF [(mult:SF
                      (float:SF (match_operand:SI 1 "fpul_fsca_operand" "y"))
                      (match_operand:SF 2 "fsca_scale_factor" "i"))
                    ] UNSPEC_FSINA)
         (unspec:SF [(mult:SF (float:SF (match_dup 1)) (match_dup 2))
                    ] UNSPEC_FCOSA)))
   (clobber (reg:SI FPSCR_STAT_REG))
   (use (reg:SI FPSCR_MODES_REG))]
  "TARGET_FPU_ANY && TARGET_FSCA"
  "fsca fpul,%d0"
  "&& !fpul_operand (operands[1], SImode)"
  [(const_int 0)]
{
  /* If operands[1] is something like (fix:SF (float:SF (reg:SI))) reduce it
     to a simple reg, otherwise reload will have trouble reloading the
     pseudo into fpul.  */
  rtx x = XEXP (operands[1], 0);
  while (x != NULL_RTX && !fpul_operand (x, SImode))
    {
      gcc_assert (GET_CODE (x) == FIX || GET_CODE (x) == FLOAT);
      x = XEXP (x, 0);
    }
  gcc_assert (x != NULL_RTX && fpul_operand (x, SImode));
  emit_insn (gen_fsca (operands[0], x, operands[2]));
  DONE;
}
  [(set_attr "type" "fsca")
   (set_attr "fp_mode" "single")])

(define_expand "abssf2"
  [(set (match_operand:SF 0 "fp_arith_reg_operand")
        (abs:SF (match_operand:SF 1 "fp_arith_reg_operand")))]
  "TARGET_SH2E")

(define_insn "*abssf2_i"
  [(set (match_operand:SF 0 "fp_arith_reg_operand" "=f")
        (abs:SF (match_operand:SF 1 "fp_arith_reg_operand" "0")))]
  "TARGET_SH2E"
  "fabs %0"
  [(set_attr "type" "fmove")])

(define_expand "adddf3"
  [(set (match_operand:DF 0 "fp_arith_reg_operand" "")
        (plus:DF (match_operand:DF 1 "fp_arith_reg_operand" "")
                 (match_operand:DF 2 "fp_arith_reg_operand" "")))]
  "TARGET_FPU_DOUBLE"
{
  emit_insn (gen_adddf3_i (operands[0], operands[1], operands[2]));
  DONE;
})

(define_insn "adddf3_i"
  [(set (match_operand:DF 0 "fp_arith_reg_operand" "=f")
        (plus:DF (match_operand:DF 1 "fp_arith_reg_operand" "%0")
                 (match_operand:DF 2 "fp_arith_reg_operand" "f")))
   (clobber (reg:SI FPSCR_STAT_REG))
   (use (reg:SI FPSCR_MODES_REG))]
  "TARGET_FPU_DOUBLE"
  "fadd %2,%0"
  [(set_attr "type" "dfp_arith")
   (set_attr "fp_mode" "double")])

(define_expand "subdf3"
  [(set (match_operand:DF 0 "fp_arith_reg_operand" "")
        (minus:DF (match_operand:DF 1 "fp_arith_reg_operand" "")
                  (match_operand:DF 2 "fp_arith_reg_operand" "")))]
  "TARGET_FPU_DOUBLE"
{
  emit_insn (gen_subdf3_i (operands[0], operands[1], operands[2]));
  DONE;
})

(define_insn "subdf3_i"
  [(set (match_operand:DF 0 "fp_arith_reg_operand" "=f")
        (minus:DF (match_operand:DF 1 "fp_arith_reg_operand" "0")
                  (match_operand:DF 2 "fp_arith_reg_operand" "f")))
   (clobber (reg:SI FPSCR_STAT_REG))
   (use (reg:SI FPSCR_MODES_REG))]
  "TARGET_FPU_DOUBLE"
  "fsub %2,%0"
  [(set_attr "type" "dfp_arith")
   (set_attr "fp_mode" "double")])

(define_expand "muldf3"
  [(set (match_operand:DF 0 "fp_arith_reg_operand" "")
        (mult:DF (match_operand:DF 1 "fp_arith_reg_operand" "")
                 (match_operand:DF 2 "fp_arith_reg_operand" "")))]
  "TARGET_FPU_DOUBLE"
{
  emit_insn (gen_muldf3_i (operands[0], operands[1], operands[2]));
  DONE;
})

(define_insn "muldf3_i"
  [(set (match_operand:DF 0 "fp_arith_reg_operand" "=f")
        (mult:DF (match_operand:DF 1 "fp_arith_reg_operand" "%0")
                 (match_operand:DF 2 "fp_arith_reg_operand" "f")))
   (clobber (reg:SI FPSCR_STAT_REG))
   (use (reg:SI FPSCR_MODES_REG))]
  "TARGET_FPU_DOUBLE"
  "fmul %2,%0"
  [(set_attr "type" "dfp_mul")
   (set_attr "fp_mode" "double")])

(define_expand "divdf3"
  [(set (match_operand:DF 0 "fp_arith_reg_operand" "")
        (div:DF (match_operand:DF 1 "fp_arith_reg_operand" "")
                (match_operand:DF 2 "fp_arith_reg_operand" "")))]
  "TARGET_FPU_DOUBLE"
{
  emit_insn (gen_divdf3_i (operands[0], operands[1], operands[2]));
  DONE;
})

(define_insn "divdf3_i"
  [(set (match_operand:DF 0 "fp_arith_reg_operand" "=f")
        (div:DF (match_operand:DF 1 "fp_arith_reg_operand" "0")
                (match_operand:DF 2 "fp_arith_reg_operand" "f")))
   (clobber (reg:SI FPSCR_STAT_REG))
   (use (reg:SI FPSCR_MODES_REG))]
  "TARGET_FPU_DOUBLE"
  "fdiv %2,%0"
  [(set_attr "type" "dfdiv")
   (set_attr "fp_mode" "double")])

(define_expand "floatsidf2"
  [(set (match_operand:DF 0 "fp_arith_reg_operand" "")
        (float:DF (match_operand:SI 1 "fpul_operand" "")))]
  "TARGET_FPU_DOUBLE"
{
  emit_insn (gen_floatsidf2_i (operands[0], operands[1]));
  DONE;
})

(define_insn "floatsidf2_i"
  [(set (match_operand:DF 0 "fp_arith_reg_operand" "=f")
        (float:DF (match_operand:SI 1 "fpul_operand" "y")))
   (clobber (reg:SI FPSCR_STAT_REG))
   (use (reg:SI FPSCR_MODES_REG))]
  "TARGET_FPU_DOUBLE"
  "float        %1,%0"
  [(set_attr "type" "dfp_conv")
   (set_attr "fp_mode" "double")])

(define_expand "fix_truncdfsi2"
  [(set (match_operand:SI 0 "fpul_operand" "")
        (fix:SI (match_operand:DF 1 "fp_arith_reg_operand" "")))]
  "TARGET_FPU_DOUBLE"
{
   emit_insn (gen_fix_truncdfsi2_i (operands[0], operands[1]));
   DONE;
})

(define_insn "fix_truncdfsi2_i"
  [(set (match_operand:SI 0 "fpul_operand" "=y")
        (fix:SI (match_operand:DF 1 "fp_arith_reg_operand" "f")))
   (clobber (reg:SI FPSCR_STAT_REG))
   (use (reg:SI FPSCR_MODES_REG))]
  "TARGET_FPU_DOUBLE"
  "ftrc %1,%0"
  [(set_attr "type" "dfp_conv")
   (set_attr "dfp_comp" "no")
   (set_attr "fp_mode" "double")])

(define_insn "cmpgtdf_t"
  [(set (reg:SI T_REG)
        (gt:SI (match_operand:DF 0 "fp_arith_reg_operand" "f")
               (match_operand:DF 1 "fp_arith_reg_operand" "f")))
   (clobber (reg:SI FPSCR_STAT_REG))
   (use (reg:SI FPSCR_MODES_REG))]
  "TARGET_FPU_DOUBLE"
  "fcmp/gt      %1,%0"
  [(set_attr "type" "dfp_cmp")
   (set_attr "fp_mode" "double")])

(define_insn "cmpeqdf_t"
  [(set (reg:SI T_REG)
        (eq:SI (match_operand:DF 0 "fp_arith_reg_operand" "f")
               (match_operand:DF 1 "fp_arith_reg_operand" "f")))
   (clobber (reg:SI FPSCR_STAT_REG))
   (use (reg:SI FPSCR_MODES_REG))]
  "TARGET_FPU_DOUBLE"
  "fcmp/eq      %1,%0"
  [(set_attr "type" "dfp_cmp")
   (set_attr "fp_mode" "double")])

(define_insn "*ieee_ccmpeqdf_t"
  [(set (reg:SI T_REG)
        (ior:SI (reg:SI T_REG)
                (eq:SI (match_operand:DF 0 "fp_arith_reg_operand" "f")
                       (match_operand:DF 1 "fp_arith_reg_operand" "f"))))
   (clobber (reg:SI FPSCR_STAT_REG))
   (use (reg:SI FPSCR_MODES_REG))]
  "TARGET_IEEE && TARGET_FPU_DOUBLE"
{
  return output_ieee_ccmpeq (insn, operands);
}
  [(set_attr "length" "4")
   (set_attr "fp_mode" "double")])

(define_expand "cbranchdf4"
  [(set (pc)
        (if_then_else (match_operator 0 "ordered_comparison_operator"
                       [(match_operand:DF 1 "arith_operand" "")
                        (match_operand:DF 2 "arith_operand" "")])
                      (match_operand 3 "" "")
                      (pc)))]
  "TARGET_FPU_DOUBLE"
{
  sh_emit_compare_and_branch (operands, DFmode);
  DONE;
})

(define_expand "negdf2"
  [(set (match_operand:DF 0 "fp_arith_reg_operand")
        (neg:DF (match_operand:DF 1 "fp_arith_reg_operand")))]
  "TARGET_FPU_DOUBLE")

(define_insn "*negdf2_i"
  [(set (match_operand:DF 0 "fp_arith_reg_operand" "=f")
        (neg:DF (match_operand:DF 1 "fp_arith_reg_operand" "0")))]
  "TARGET_FPU_DOUBLE"
  "fneg %0"
  [(set_attr "type" "fmove")])

(define_expand "sqrtdf2"
  [(set (match_operand:DF 0 "fp_arith_reg_operand")
        (sqrt:DF (match_operand:DF 1 "fp_arith_reg_operand")))]
  "TARGET_FPU_DOUBLE"
{
  emit_insn (gen_sqrtdf2_i (operands[0], operands[1]));
  DONE;
})

(define_insn "sqrtdf2_i"
  [(set (match_operand:DF 0 "fp_arith_reg_operand" "=f")
        (sqrt:DF (match_operand:DF 1 "fp_arith_reg_operand" "0")))
   (clobber (reg:SI FPSCR_STAT_REG))
   (use (reg:SI FPSCR_MODES_REG))]
  "TARGET_FPU_DOUBLE"
  "fsqrt        %0"
  [(set_attr "type" "dfdiv")
   (set_attr "fp_mode" "double")])

(define_expand "absdf2"
  [(set (match_operand:DF 0 "fp_arith_reg_operand")
        (abs:DF (match_operand:DF 1 "fp_arith_reg_operand")))]
  "TARGET_FPU_DOUBLE")

(define_insn "*absdf2_i"
  [(set (match_operand:DF 0 "fp_arith_reg_operand" "=f")
        (abs:DF (match_operand:DF 1 "fp_arith_reg_operand" "0")))]
  "TARGET_FPU_DOUBLE"
  "fabs %0"
  [(set_attr "type" "fmove")])

(define_expand "extendsfdf2"
  [(set (match_operand:DF 0 "fp_arith_reg_operand" "")
        (float_extend:DF (match_operand:SF 1 "fpul_operand" "")))]
  "TARGET_FPU_DOUBLE"
{
  emit_insn (gen_extendsfdf2_i4 (operands[0], operands[1]));
  DONE;
})

(define_insn "extendsfdf2_i4"
  [(set (match_operand:DF 0 "fp_arith_reg_operand" "=f")
        (float_extend:DF (match_operand:SF 1 "fpul_operand" "y")))
   (clobber (reg:SI FPSCR_STAT_REG))
   (use (reg:SI FPSCR_MODES_REG))]
  "TARGET_FPU_DOUBLE"
  "fcnvsd  %1,%0"
  [(set_attr "type" "fp")
   (set_attr "fp_mode" "double")])

(define_expand "truncdfsf2"
  [(set (match_operand:SF 0 "fpul_operand" "")
        (float_truncate:SF (match_operand:DF 1 "fp_arith_reg_operand" "")))]
  "TARGET_FPU_DOUBLE"
{
  emit_insn (gen_truncdfsf2_i4 (operands[0], operands[1]));
  DONE;
})

(define_insn "truncdfsf2_i4"
  [(set (match_operand:SF 0 "fpul_operand" "=y")
        (float_truncate:SF (match_operand:DF 1 "fp_arith_reg_operand" "f")))
   (clobber (reg:SI FPSCR_STAT_REG))
   (use (reg:SI FPSCR_MODES_REG))]
  "TARGET_FPU_DOUBLE"
  "fcnvds  %1,%0"
  [(set_attr "type" "fp")
   (set_attr "fp_mode" "double")])
\f
;; -------------------------------------------------------------------------
;; Bit field extract patterns.
;; -------------------------------------------------------------------------

;; These give better code for packed bitfields,  because they allow
;; auto-increment addresses to be generated.

(define_expand "insv"
  [(set (zero_extract:SI (match_operand:QI 0 "memory_operand" "")
                         (match_operand:SI 1 "immediate_operand" "")
                         (match_operand:SI 2 "immediate_operand" ""))
        (match_operand:SI 3 "general_operand" ""))]
  "TARGET_SH1 && TARGET_BIG_ENDIAN"
{
  rtx addr_target, orig_address, shift_reg, qi_val;
  HOST_WIDE_INT bitsize, size, v = 0;
  rtx x = operands[3];

  if (TARGET_SH2A && TARGET_BITOPS
      && (satisfies_constraint_Sbw (operands[0])
          || satisfies_constraint_Sbv (operands[0]))
      && satisfies_constraint_M (operands[1])
      && satisfies_constraint_K03 (operands[2]))
    {
      if (satisfies_constraint_N (operands[3]))
        {
          emit_insn (gen_bclr_m2a (operands[0], operands[2]));
          DONE;
        }
      else if (satisfies_constraint_M (operands[3]))
        {
          emit_insn (gen_bset_m2a (operands[0], operands[2]));
          DONE;
        }
      else if ((REG_P (operands[3]) && REGNO (operands[3]) == T_REG)
                && satisfies_constraint_M (operands[1]))
        {
          emit_insn (gen_bst_m2a (operands[0], operands[2]));
          DONE;
        }
      else if (REG_P (operands[3])
               && satisfies_constraint_M (operands[1]))
        {
          emit_insn (gen_bldsi_reg (operands[3], const0_rtx));
          emit_insn (gen_bst_m2a (operands[0], operands[2]));
          DONE;
        }
    }
  /* ??? expmed doesn't care for non-register predicates.  */
  if (! memory_operand (operands[0], VOIDmode)
      || ! immediate_operand (operands[1], VOIDmode)
      || ! immediate_operand (operands[2], VOIDmode)
      || ! general_operand (x, VOIDmode))
    FAIL;
  /* If this isn't a 16 / 24 / 32 bit field, or if
     it doesn't start on a byte boundary, then fail.  */
  bitsize = INTVAL (operands[1]);
  if (bitsize < 16 || bitsize > 32 || bitsize % 8 != 0
      || (INTVAL (operands[2]) % 8) != 0)
    FAIL;

  size = bitsize / 8;
  orig_address = XEXP (operands[0], 0);
  shift_reg = gen_reg_rtx (SImode);
  if (CONST_INT_P (x))
    {
      v = INTVAL (x);
      qi_val = force_reg (QImode, GEN_INT (trunc_int_for_mode (v, QImode)));
    }
  else
    {
      emit_insn (gen_movsi (shift_reg, operands[3]));
      qi_val = gen_rtx_SUBREG (QImode, shift_reg, 3);
    }
  addr_target = copy_addr_to_reg (plus_constant (Pmode,
                                                 orig_address, size - 1));

  operands[0] = replace_equiv_address (operands[0], addr_target);
  emit_insn (gen_movqi (operands[0], qi_val));

  while (size -= 1)
    {
      if (CONST_INT_P (x))
        qi_val
          = force_reg (QImode, GEN_INT (trunc_int_for_mode (v >>= 8, QImode)));
      else
        {
          emit_insn (gen_lshrsi3_k (shift_reg, shift_reg, GEN_INT (8)));
          qi_val = gen_rtx_SUBREG (QImode, shift_reg, 3);
        }
      emit_insn (gen_addsi3 (addr_target, addr_target, constm1_rtx));
      emit_insn (gen_movqi (operands[0], qi_val));
    }

  DONE;
})

(define_insn "movua"
  [(set (match_operand:SI 0 "register_operand" "=z")
        (unspec:SI [(match_operand:BLK 1 "unaligned_load_operand" "Sua>")]
                   UNSPEC_MOVUA))]
  "TARGET_SH4A"
  "movua.l      %1,%0"
  [(set_attr "type" "movua")])

;; We shouldn't need this, but cse replaces increments with references
;; to other regs before flow has a chance to create post_inc
;; addressing modes, and only postreload's cse_move2add brings the
;; increments back to a usable form.
(define_peephole2
  [(set (match_operand:SI 0 "register_operand" "")
        (sign_extract:SI (mem:SI (match_operand:SI 1 "register_operand" ""))
                         (const_int 32) (const_int 0)))
   (set (match_dup 1) (plus:SI (match_dup 1) (const_int 4)))]
  "TARGET_SH4A && REGNO (operands[0]) != REGNO (operands[1])"
  [(set (match_operand:SI 0 "register_operand" "")
        (sign_extract:SI (mem:SI (post_inc:SI
                                  (match_operand:SI 1 "register_operand" "")))
                         (const_int 32) (const_int 0)))]
  "")

(define_expand "extv"
  [(set (match_operand:SI 0 "register_operand" "")
        (sign_extract:SI (match_operand:QI 1 "unaligned_load_operand" "")
                         (match_operand 2 "const_int_operand" "")
                         (match_operand 3 "const_int_operand" "")))]
  "TARGET_SH4A || TARGET_SH2A"
{
  if (TARGET_SH2A && TARGET_BITOPS
      && (satisfies_constraint_Sbw (operands[1])
          || satisfies_constraint_Sbv (operands[1]))
      && satisfies_constraint_M (operands[2])
      && satisfies_constraint_K03 (operands[3]))
   {
      emit_insn (gen_bldsign_m2a (operands[1], operands[3]));
      if (REGNO (operands[0]) != T_REG)
        emit_insn (gen_movsi (operands[0], gen_rtx_REG (SImode, T_REG)));
      DONE;
   }
  if (TARGET_SH4A
      && INTVAL (operands[2]) == 32
      && INTVAL (operands[3]) == 0
      && MEM_P (operands[1]) && MEM_ALIGN (operands[1]) < 32)
    {
      rtx src = adjust_address (operands[1], BLKmode, 0);
      set_mem_size (src, 4);
      emit_insn (gen_movua (operands[0], src));
      DONE;
    }

  FAIL;
})

(define_expand "extzv"
  [(set (match_operand:SI 0 "register_operand" "")
        (zero_extract:SI (match_operand:QI 1 "unaligned_load_operand" "")
                         (match_operand 2 "const_int_operand" "")
                         (match_operand 3 "const_int_operand" "")))]
  "TARGET_SH4A || TARGET_SH2A"
{
  if (TARGET_SH2A && TARGET_BITOPS
      && (satisfies_constraint_Sbw (operands[1])
          || satisfies_constraint_Sbv (operands[1]))
      && satisfies_constraint_M (operands[2])
      && satisfies_constraint_K03 (operands[3]))
    {
      emit_insn (gen_bld_m2a (operands[1], operands[3]));
      if (REGNO (operands[0]) != T_REG)
        emit_insn (gen_movsi (operands[0], gen_rtx_REG (SImode, T_REG)));
      DONE;
    }
  if (TARGET_SH4A
      && INTVAL (operands[2]) == 32
      && INTVAL (operands[3]) == 0
      && MEM_P (operands[1]) && MEM_ALIGN (operands[1]) < 32)
    {
      rtx src = adjust_address (operands[1], BLKmode, 0);
      set_mem_size (src, 4);
      emit_insn (gen_movua (operands[0], src));
      DONE;
    }

  FAIL;
})

;; -------------------------------------------------------------------------
;; Extract negated single bit and zero extend it.
;; Generally we don't care about the exact xor const_int value, as long
;; as it contains the extracted bit.  For simplicity, the pattern variations
;; that convert everything into the primary '*neg_zero_extract_0' pattern use
;; a xor const_int -1 value.

(define_insn_and_split "*neg_zero_extract_0"
  [(set (reg:SI T_REG)
        (zero_extract:SI (xor:QIHISI (match_operand:QIHISI 0 "arith_reg_operand")
                                     (match_operand 1 "const_int_operand"))
                         (const_int 1)
                         (match_operand 2 "const_int_operand")))]
  "TARGET_SH1 && can_create_pseudo_p ()
   && INTVAL (operands[1]) & (1LL << INTVAL (operands[2]))"
  "#"
  "&& 1"
  [(set (reg:SI T_REG) (eq:SI (and:SI (match_dup 0) (match_dup 2))
                       (const_int 0)))]
{
  if (INTVAL (operands[2]) == 31 && <MODE>mode == SImode)
    {
      /* Use cmp/pz to extract bit 31 into the T bit.  */
      emit_insn (gen_cmpgesi_t (operands[0], const0_rtx));
      DONE;
    }

  operands[2] = GEN_INT ((1 << INTVAL (operands[2])));
  if (GET_MODE (operands[0]) != SImode)
    operands[0] = simplify_gen_subreg (SImode, operands[0], <MODE>mode, 0);
})

(define_insn_and_split "*neg_zero_extract_1"
  [(set (reg:SI T_REG)
        (and:SI (not:SI (match_operand:SI 0 "arith_reg_operand"))
                (const_int 1)))]
  "TARGET_SH1"
  "#"
  "&& 1"
  [(set (reg:SI T_REG) (zero_extract:SI (xor:SI (match_dup 0) (const_int -1))
                                        (const_int 1) (const_int 0)))])

;; x & (1 << n) == 0: 0x00000000 + 1 = 1
;; x & (1 << n) != 0: 0xFFFFFFFF + 1 = 0
(define_insn_and_split "*neg_zero_extract_2"
  [(set (reg:SI T_REG)
        (plus:SI (sign_extract:SI (match_operand:QIHISI 0 "arith_reg_operand")
                                  (const_int 1)
                                  (match_operand 1 "const_int_operand"))
                 (const_int 1)))]
  "TARGET_SH1 && can_create_pseudo_p ()"
  "#"
  "&& 1"
  [(set (reg:SI T_REG) (zero_extract:SI (xor:SI (match_dup 0) (const_int -1))
                                        (const_int 1) (match_dup 1)))])

;; (signed)x >> 31 + 1 = (x >= 0) ^ 1
(define_insn_and_split "*neg_zero_extract_3"
  [(set (reg:SI T_REG)
        (plus:SI (ashiftrt:SI (match_operand:SI 0 "arith_reg_operand")
                              (const_int 31))
                 (const_int 1)))]
  "TARGET_SH1 && can_create_pseudo_p ()"
  "#"
  "&& 1"
  [(set (reg:SI T_REG) (zero_extract:SI (xor:SI (match_dup 0) (const_int -1))
                                        (const_int 1) (const_int 31)))])

;; This is required for some bit patterns of DImode subregs.
;; It looks like combine gets confused by the DImode right shift and fails
;; to simplify things.
(define_insn_and_split "*neg_zero_extract_4"
  [(set (reg:SI T_REG)
        (and:SI (and:SI
                  (lshiftrt:SI (xor:SI (match_operand:SI 0 "arith_reg_operand")
                                       (match_operand 1 "const_int_operand"))
                               (match_operand 2 "const_int_operand"))
                  (not:SI (ashift:SI (match_operand:SI 3 "arith_reg_operand")
                                     (match_operand 4 "const_int_operand"))))
                (const_int 1)))]
  "TARGET_SH1 && can_create_pseudo_p ()
   && INTVAL (operands[4]) > 0
   && INTVAL (operands[1]) & (1LL << INTVAL (operands[2]))"
  "#"
  "&& 1"
  [(set (reg:SI T_REG) (zero_extract:SI (xor:SI (match_dup 0) (match_dup 1))
                                        (const_int 1) (match_dup 2)))])

(define_insn_and_split "*neg_zero_extract_5"
  [(set (reg:SI T_REG)
        (and:SI (not:SI (subreg:SI
                          (lshiftrt:DI (match_operand:DI 0 "arith_reg_operand")
                                       (match_operand 1 "const_int_operand"))
                         0))
                (const_int 1)))]
  "TARGET_SH1 && TARGET_LITTLE_ENDIAN && can_create_pseudo_p ()
   && INTVAL (operands[1]) < 32"
  "#"
  "&& 1"
  [(set (reg:SI T_REG) (zero_extract:SI (xor:SI (match_dup 0) (const_int -1))
                                        (const_int 1) (match_dup 1)))]
{
  operands[0] = gen_lowpart (SImode, operands[0]);
})

(define_insn_and_split "*neg_zero_extract_6"
  [(set (reg:SI T_REG)
        (and:SI (not:SI (subreg:SI
                          (lshiftrt:DI (match_operand:DI 0 "arith_reg_operand")
                                       (match_operand 1 "const_int_operand"))
                         4))
                (const_int 1)))]
  "TARGET_SH1 && TARGET_BIG_ENDIAN && can_create_pseudo_p ()
   && INTVAL (operands[1]) < 32"
  "#"
  "&& 1"
  [(set (reg:SI T_REG) (zero_extract:SI (xor:SI (match_dup 0) (const_int -1))
                                        (const_int 1) (match_dup 1)))]
{
  operands[0] = gen_lowpart (SImode, operands[0]);
})

;; -------------------------------------------------------------------------
;; Extract single bit and zero extend it.
;; All patterns store the result bit in the T bit, although that is not
;; always possible to do with a single insn and a nott must be appended.
;; The trailing nott will be optimized away in most cases.  E.g. if the
;; extracted bit is fed into a branch condition, the condition can be
;; inverted and the nott will be eliminated.
;; FIXME: In cases where the trailing nott can't be eliminated, try to
;; convert it into a (not, tst) sequence, which could be better on non-SH2A.

;; On SH2A the 'bld<mode>_reg' insn will be used if the bit position fits.
(define_insn_and_split "*zero_extract_0"
  [(set (reg:SI T_REG)
        (zero_extract:SI (match_operand:QIHISI 0 "arith_reg_operand")
                         (const_int 1)
                         (match_operand 1 "const_int_operand")))]
  "TARGET_SH1 && can_create_pseudo_p ()
   && !(TARGET_SH2A && satisfies_constraint_K03 (operands[1]))"
  "#"
  "&& 1"
  [(set (reg:SI T_REG) (eq:SI (and:SI (match_dup 0) (match_dup 1))
                              (const_int 0)))
   (set (reg:SI T_REG) (xor:SI (reg:SI T_REG) (const_int 1)))]
{
  if (INTVAL (operands[1]) == 31 && <MODE>mode == SImode)
    {
      emit_insn (gen_shll (gen_reg_rtx (SImode), operands[0]));
      DONE;
    }

  operands[1] = GEN_INT (1 << INTVAL (operands[1]));
  if (GET_MODE (operands[0]) != SImode)
    operands[0] = simplify_gen_subreg (SImode, operands[0], <MODE>mode, 0);
})

;; This is required for some bit patterns of DImode subregs.
;; It looks like combine gets confused by the DImode right shift and fails
;; to simplify things.
(define_insn_and_split "*zero_extract_1"
  [(set (reg:SI T_REG)
        (subreg:SI (zero_extract:DI (match_operand:SI 0 "arith_reg_operand")
                                    (const_int 1)
                                    (match_operand 1 "const_int_operand"))
         0))]
  "TARGET_SH1 && TARGET_LITTLE_ENDIAN && can_create_pseudo_p ()
   && INTVAL (operands[1]) < 32"
  "#"
  "&& 1"
  [(set (reg:SI T_REG)
        (zero_extract:SI (match_dup 0) (const_int 1) (match_dup 1)))])

(define_insn_and_split "*zero_extract_2"
  [(set (reg:SI T_REG)
        (subreg:SI (zero_extract:DI (match_operand:SI 0 "arith_reg_operand")
                                    (const_int 1)
                                    (match_operand 1 "const_int_operand"))
         4))]
  "TARGET_SH1 && TARGET_BIG_ENDIAN && can_create_pseudo_p ()
   && INTVAL (operands[1]) < 32"
  "#"
  "&& 1"
  [(set (reg:SI T_REG)
        (zero_extract:SI (match_dup 0) (const_int 1) (match_dup 1)))])

(define_insn_and_split "*zero_extract_3"
  [(set (match_operand:SI 0 "arith_reg_dest")
        (and:SI (lshiftrt:SI (match_operand:SI 1 "arith_reg_operand")
                             (match_operand 2 "const_int_operand"))
                (match_operand 3 "const_int_operand")))
   (clobber (reg:SI T_REG))]
  "TARGET_SH1 && can_create_pseudo_p ()
   && exact_log2 (INTVAL (operands[3])) >= 0"
  "#"
  "&& 1"
  [(const_int 0)]
{
  int rshift = INTVAL (operands[2]);
  int lshift = exact_log2 (INTVAL (operands[3]));

  rtx tmp = gen_reg_rtx (SImode);
  emit_insn (gen_rtx_PARALLEL (VOIDmode,
    gen_rtvec (2,
      gen_rtx_SET (tmp,
                   gen_rtx_ZERO_EXTRACT (SImode, operands[1], const1_rtx,
                                         GEN_INT (rshift + lshift))),
      gen_rtx_CLOBBER (VOIDmode, get_t_reg_rtx ()))));
  emit_insn (gen_ashlsi3 (operands[0], tmp, GEN_INT (lshift)));
})

;; -------------------------------------------------------------------------
;; SH2A instructions for bitwise operations.
;; FIXME: Convert multiple instruction insns to insn_and_split.
;; FIXME: Use iterators to fold at least and,xor,or insn variations.

;; Clear a bit in a memory location.
(define_insn "bclr_m2a"
  [(set (match_operand:QI 0 "bitwise_memory_operand" "+Sbw,Sbv")
        (and:QI
            (not:QI (ashift:QI (const_int 1)
                        (match_operand:QI 1 "const_int_operand" "K03,K03")))
            (match_dup 0)))]
  "TARGET_SH2A && TARGET_BITOPS && satisfies_constraint_K03 (operands[1])"
  "@
        bclr.b  %1,%0
        bclr.b  %1,@(0,%t0)"
[(set_attr "length" "4,4")])

(define_insn "bclrmem_m2a"
  [(set (match_operand:QI 0 "bitwise_memory_operand" "+Sbw,Sbv")
        (and:QI (match_dup 0)
                (match_operand:QI 1 "const_int_operand" "Psz,Psz")))]
  "TARGET_SH2A && satisfies_constraint_Psz (operands[1]) && TARGET_BITOPS"
  "@
        bclr.b  %W1,%0
        bclr.b  %W1,@(0,%t0)"
  [(set_attr "length" "4,4")])

;; Set a bit in a memory location.
(define_insn "bset_m2a"
  [(set (match_operand:QI 0 "bitwise_memory_operand" "+Sbw,Sbv")
        (ior:QI
            (ashift:QI (const_int 1)
                       (match_operand:QI 1 "const_int_operand" "K03,K03"))
            (match_dup 0)))]
  "TARGET_SH2A && TARGET_BITOPS && satisfies_constraint_K03 (operands[1])"
  "@
        bset.b  %1,%0
        bset.b  %1,@(0,%t0)"
  [(set_attr "length" "4,4")])

(define_insn "bsetmem_m2a"
  [(set (match_operand:QI 0 "bitwise_memory_operand" "+Sbw,Sbv")
        (ior:QI (match_dup 0)
                (match_operand:QI 1 "const_int_operand" "Pso,Pso")))]
  "TARGET_SH2A && satisfies_constraint_Pso (operands[1]) && TARGET_BITOPS"
  "@
        bset.b  %V1,%0
        bset.b  %V1,@(0,%t0)"
  [(set_attr "length" "4,4")])

;;; Transfer the contents of the T bit to a specified bit of memory.
(define_insn "bst_m2a"
  [(set (match_operand:QI 0 "bitwise_memory_operand" "+Sbw,m")
        (if_then_else (eq (reg:SI T_REG) (const_int 0))
            (and:QI
                (not:QI (ashift:QI (const_int 1)
                        (match_operand:QI 1 "const_int_operand" "K03,K03")))
                (match_dup 0))
            (ior:QI
                (ashift:QI (const_int 1) (match_dup 1))
                (match_dup 0))))]
  "TARGET_SH2A && TARGET_BITOPS && satisfies_constraint_K03 (operands[1])"
  "@
        bst.b   %1,%0
        bst.b   %1,@(0,%t0)"
  [(set_attr "length" "4")])

;; Store a specified bit of memory in the T bit.
(define_insn "bld_m2a"
  [(set (reg:SI T_REG)
        (zero_extract:SI
            (match_operand:QI 0 "bitwise_memory_operand" "Sbw,Sbv")
            (const_int 1)
            (match_operand 1 "const_int_operand" "K03,K03")))]
  "TARGET_SH2A && TARGET_BITOPS && satisfies_constraint_K03 (operands[1])"
  "@
        bld.b   %1,%0
        bld.b   %1,@(0,%t0)"
  [(set_attr "length" "4,4")])

;; Store a specified bit of memory in the T bit.
(define_insn "bldsign_m2a"
  [(set (reg:SI T_REG)
        (sign_extract:SI
            (match_operand:QI 0 "bitwise_memory_operand" "Sbw,m")
            (const_int 1)
            (match_operand 1 "const_int_operand" "K03,K03")))]
  "TARGET_SH2A && TARGET_BITOPS && satisfies_constraint_K03 (operands[1])"
  "@
        bld.b   %1,%0
        bld.b   %1,@(0,%t0)"
  [(set_attr "length" "4,4")])

;; Store a specified bit of the LSB 8 bits of a register in the T bit.
(define_insn "bld<mode>_reg"
  [(set (reg:SI T_REG)
        (zero_extract:SI (match_operand:QIHISI 0 "arith_reg_operand" "r")
                         (const_int 1)
                         (match_operand 1 "const_int_operand" "K03")))]
  "TARGET_SH2A && satisfies_constraint_K03 (operands[1])"
  "bld  %1,%0")

;; Take logical and of a specified bit of memory with the T bit and
;; store its result in the T bit.
(define_insn "band_m2a"
  [(set (reg:SI T_REG)
        (and:SI (reg:SI T_REG)
                (zero_extract:SI
                    (match_operand:QI 0 "bitwise_memory_operand" "Sbw,m")
                    (const_int 1)
                    (match_operand 1 "const_int_operand" "K03,K03"))))]
  "TARGET_SH2A && TARGET_BITOPS && satisfies_constraint_K03 (operands[1])"
  "@
        band.b  %1,%0
        band.b  %1,@(0,%t0)"
  [(set_attr "length" "4,4")])

(define_insn "bandreg_m2a"
  [(set (match_operand:SI 0 "register_operand" "=r,r")
        (and:SI (zero_extract:SI
                    (match_operand:QI 1 "bitwise_memory_operand" "Sbw,Sbv")
                    (const_int 1)
                    (match_operand 2 "const_int_operand" "K03,K03"))
                (match_operand:SI 3 "register_operand" "r,r")))]
  "TARGET_SH2A && TARGET_BITOPS && satisfies_constraint_K03 (operands[2])"
{
  static const char* alt[] =
  {
       "band.b  %2,%1"          "\n"
    "   movt    %0",

       "band.b  %2,@(0,%t1)"    "\n"
    "   movt    %0"
  };
  return alt[which_alternative];
}
  [(set_attr "length" "6,6")])

;; Take logical or of a specified bit of memory with the T bit and
;; store its result in the T bit.
(define_insn "bor_m2a"
  [(set (reg:SI T_REG)
        (ior:SI (reg:SI T_REG)
                (zero_extract:SI
                    (match_operand:QI 0 "bitwise_memory_operand" "Sbw,m")
                    (const_int 1)
                    (match_operand 1 "const_int_operand" "K03,K03"))))]
  "TARGET_SH2A && TARGET_BITOPS && satisfies_constraint_K03 (operands[1])"
  "@
        bor.b   %1,%0
        bor.b   %1,@(0,%t0)"
  [(set_attr "length" "4,4")])

(define_insn "borreg_m2a"
  [(set (match_operand:SI 0 "register_operand" "=r,r")
        (ior:SI (zero_extract:SI
                    (match_operand:QI 1 "bitwise_memory_operand" "Sbw,Sbv")
                    (const_int 1)
                    (match_operand 2 "const_int_operand" "K03,K03"))
                (match_operand:SI 3 "register_operand" "=r,r")))]
  "TARGET_SH2A && TARGET_BITOPS && satisfies_constraint_K03 (operands[2])"
{
  static const char* alt[] =
  {
       "bor.b   %2,%1"          "\n"
    "   movt    %0",

       "bor.b   %2,@(0,%t1)"    "\n"
    "   movt    %0"
  };
  return alt[which_alternative];
}
  [(set_attr "length" "6,6")])

;; Take exclusive or of a specified bit of memory with the T bit and
;; store its result in the T bit.
(define_insn "bxor_m2a"
  [(set (reg:SI T_REG)
        (xor:SI (reg:SI T_REG)
                (zero_extract:SI
                    (match_operand:QI 0 "bitwise_memory_operand" "Sbw,m")
                    (const_int 1)
                    (match_operand 1 "const_int_operand" "K03,K03"))))]
  "TARGET_SH2A && TARGET_BITOPS && satisfies_constraint_K03 (operands[1])"
  "@
        bxor.b  %1,%0
        bxor.b  %1,@(0,%t0)"
  [(set_attr "length" "4,4")])

(define_insn "bxorreg_m2a"
  [(set (match_operand:SI 0 "register_operand" "=r,r")
        (xor:SI (zero_extract:SI
                    (match_operand:QI 1 "bitwise_memory_operand" "Sbw,Sbv")
                    (const_int 1)
                    (match_operand 2 "const_int_operand" "K03,K03"))
                (match_operand:SI 3 "register_operand" "=r,r")))]
  "TARGET_SH2A && TARGET_BITOPS && satisfies_constraint_K03 (operands[2])"
{
  static const char* alt[] =
  {
       "bxor.b  %2,%1"          "\n"
    "   movt    %0",

       "bxor.b  %2,@(0,%t1)"    "\n"
    "   movt    %0"
  };
  return alt[which_alternative];
}
  [(set_attr "length" "6,6")])
\f
;; -------------------------------------------------------------------------
;; Peepholes
;; -------------------------------------------------------------------------
;; This matches cases where the bit in a memory location is set.
(define_peephole2
  [(set (match_operand:SI 0 "register_operand")
        (sign_extend:SI (match_operand:QI 1 "bitwise_memory_operand")))
   (set (match_dup 0)
        (ior:SI (match_dup 0)
        (match_operand:SI 2 "const_int_operand")))
   (set (match_dup 1)
        (match_operand 3 "arith_reg_operand"))]
  "TARGET_SH2A && TARGET_BITOPS
   && satisfies_constraint_Pso (operands[2])
   && REGNO (operands[0]) == REGNO (operands[3])"
  [(set (match_dup 1)
        (ior:QI (match_dup 1) (match_dup 2)))]
  "")

;; This matches cases where the bit in a memory location is cleared.
(define_peephole2
  [(set (match_operand:SI 0 "register_operand")
        (sign_extend:SI (match_operand:QI 1 "bitwise_memory_operand")))
   (set (match_dup 0)
        (and:SI (match_dup 0)
        (match_operand:SI 2 "const_int_operand")))
   (set (match_dup 1)
        (match_operand 3 "arith_reg_operand"))]
  "TARGET_SH2A && TARGET_BITOPS
   && satisfies_constraint_Psz (operands[2])
   && REGNO (operands[0]) == REGNO (operands[3])"
  [(set (match_dup 1)
        (and:QI (match_dup 1) (match_dup 2)))]
  "")

;; This matches cases where a stack pointer increment at the start of the
;; epilogue combines with a stack slot read loading the return value.
(define_peephole
  [(set (match_operand:SI 0 "arith_reg_operand" "")
        (mem:SI (match_operand:SI 1 "arith_reg_operand" "")))
   (set (match_dup 1) (plus:SI (match_dup 1) (const_int 4)))]
  "TARGET_SH1 && REGNO (operands[1]) != REGNO (operands[0])"
  "mov.l        @%1+,%0")

;; See the comment on the dt combiner pattern above.
(define_peephole
  [(set (match_operand:SI 0 "arith_reg_operand" "=r")
        (plus:SI (match_dup 0)
                 (const_int -1)))
   (set (reg:SI T_REG)
        (eq:SI (match_dup 0) (const_int 0)))]
  "TARGET_SH2"
  "dt   %0")

;; The following peepholes fold load sequences for which reload was not
;; able to generate a displacement addressing move insn.
;; This can happen when reload has to transform a move insn 
;; without displacement into one with displacement.  Or when reload can't
;; fit a displacement into the insn's constraints.  In the latter case, the
;; load destination reg remains at r0, which reload compensates by inserting
;; another mov insn.

;; Fold sequence:
;;      mov #54,r0
;;      mov.{b,w} @(r0,r15),r0
;;      mov r0,r3
;; into:
;;      mov.{b,w} @(54,r15),r3
;;
(define_peephole2
  [(set (match_operand:SI 0 "arith_reg_dest" "")
        (match_operand:SI 1 "const_int_operand" ""))
   (set (match_operand:SI 2 "arith_reg_dest" "")
        (sign_extend:SI
         (mem:QI (plus:SI (match_dup 0)
                          (match_operand:SI 3 "arith_reg_operand" "")))))
   (set (match_operand:QI 4 "arith_reg_dest" "")
        (match_operand:QI 5 "arith_reg_operand" ""))]
  "TARGET_SH2A
   && sh_legitimate_index_p (QImode, operands[1], true, true)
   && REGNO (operands[2]) == REGNO (operands[5])
   && peep2_reg_dead_p (3, operands[5])"
  [(set (match_dup 4) (mem:QI (plus:SI (match_dup 3) (match_dup 1))))]
  "")

(define_peephole2
  [(set (match_operand:SI 0 "arith_reg_dest" "")
        (match_operand:SI 1 "const_int_operand" ""))
   (set (match_operand:SI 2 "arith_reg_dest" "")
        (sign_extend:SI
         (mem:HI (plus:SI (match_dup 0)
                          (match_operand:SI 3 "arith_reg_operand" "")))))
   (set (match_operand:HI 4 "arith_reg_dest" "")
        (match_operand:HI 5 "arith_reg_operand" ""))]
  "TARGET_SH2A
   && sh_legitimate_index_p (HImode, operands[1], true, true)
   && REGNO (operands[2]) == REGNO (operands[5])
   && peep2_reg_dead_p (3, operands[5])"
  [(set (match_dup 4) (mem:HI (plus:SI (match_dup 3) (match_dup 1))))]
  "")

;; Fold sequence:
;;      mov #54,r0
;;      mov.{b,w} @(r0,r15),r1
;; into:
;;      mov.{b,w} @(54,r15),r1
;;
(define_peephole2
  [(set (match_operand:SI 0 "arith_reg_dest" "")
        (match_operand:SI 1 "const_int_operand" ""))
   (set (match_operand:SI 2 "arith_reg_dest" "")
         (sign_extend:SI
         (mem:QI (plus:SI (match_dup 0)
                          (match_operand:SI 3 "arith_reg_operand" "")))))]
  "TARGET_SH2A
   && sh_legitimate_index_p (QImode, operands[1], true, true)
   && (peep2_reg_dead_p (2, operands[0])
       || REGNO (operands[0]) == REGNO (operands[2]))"
  [(set (match_dup 2)
        (sign_extend:SI (mem:QI (plus:SI (match_dup 3) (match_dup 1)))))]
  "")

(define_peephole2
  [(set (match_operand:SI 0 "arith_reg_dest" "")
        (match_operand:SI 1 "const_int_operand" ""))
   (set (match_operand:SI 2 "arith_reg_dest" "")
         (sign_extend:SI
         (mem:HI (plus:SI (match_dup 0)
                          (match_operand:SI 3 "arith_reg_operand" "")))))]
  "TARGET_SH2A
   && sh_legitimate_index_p (HImode, operands[1], true, true)
   && (peep2_reg_dead_p (2, operands[0])
       || REGNO (operands[0]) == REGNO (operands[2]))"
  [(set (match_dup 2)
        (sign_extend:SI (mem:HI (plus:SI (match_dup 3) (match_dup 1)))))]
  "")

;; Fold sequence:
;;      mov.{b,w} @(r0,r15),r0
;;      mov r0,r3
;; into:
;;      mov.{b,w} @(r0,r15),r3
;;
;; This can happen when initially a displacement address is picked, where
;; the destination reg is fixed to r0, and then the address is transformed
;; into 'r0 + reg'.
(define_peephole2
  [(set (match_operand:SI 0 "arith_reg_dest" "")
        (sign_extend:SI
         (mem:QI (plus:SI (match_operand:SI 1 "arith_reg_operand" "")
                          (match_operand:SI 2 "arith_reg_operand" "")))))
   (set (match_operand:QI 3 "arith_reg_dest" "")
        (match_operand:QI 4 "arith_reg_operand" ""))]
  "TARGET_SH1
   && REGNO (operands[0]) == REGNO (operands[4])
   && peep2_reg_dead_p (2, operands[0])"
  [(set (match_dup 3)
        (mem:QI (plus:SI (match_dup 1) (match_dup 2))))]
  "")

(define_peephole2
  [(set (match_operand:SI 0 "arith_reg_dest" "")
        (sign_extend:SI
         (mem:HI (plus:SI (match_operand:SI 1 "arith_reg_operand" "")
                          (match_operand:SI 2 "arith_reg_operand" "")))))
   (set (match_operand:HI 3 "arith_reg_dest" "")
        (match_operand:HI 4 "arith_reg_operand" ""))]
  "TARGET_SH1
   && REGNO (operands[0]) == REGNO (operands[4])
   && peep2_reg_dead_p (2, operands[0])"
  [(set (match_dup 3)
        (mem:HI (plus:SI (match_dup 1) (match_dup 2))))]
  "")

;;      extu.bw a,b
;;      mov     b,c     ->      extu.bw a,c
(define_peephole2
  [(set (match_operand:SI 0 "arith_reg_dest")
        (zero_extend:SI (match_operand:QIHI 1 "arith_reg_operand")))
   (set (match_operand:SI 2 "arith_reg_dest")
        (match_dup 0))]
  "TARGET_SH1 && peep2_reg_dead_p (2, operands[0])"
  [(set (match_dup 2) (zero_extend:SI (match_dup 1)))])

;;      mov     r0,r1
;;      extu.bw r1,r1   ->      extu.bw r0,r1
(define_peephole2
  [(set (match_operand 0 "arith_reg_dest")
        (match_operand 1 "arith_reg_operand"))
   (set (match_operand:SI 2 "arith_reg_dest")
        (zero_extend:SI (match_operand:QIHI 3 "arith_reg_operand")))]
  "TARGET_SH1
   && REGNO (operands[0]) == REGNO (operands[3])
   && (REGNO (operands[0]) == REGNO (operands[2])
       || peep2_reg_dead_p (2, operands[0]))"
  [(set (match_dup 2) (zero_extend:SI (match_dup 1)))]
{
  operands[1] = gen_rtx_REG (<MODE>mode, REGNO (operands[1]));
})

;;      mov     a,b
;;      mov     b,a     ->      < nop >
(define_peephole2
  [(set (match_operand 0 "register_operand")
        (match_operand 1 "register_operand"))
   (set (match_operand 2 "register_operand")
        (match_operand 3 "register_operand"))]
  "TARGET_SH1
   && REGNO (operands[0]) == REGNO (operands[3])
   && REGNO (operands[1]) == REGNO (operands[2])
   && peep2_reg_dead_p (2, operands[3])"
  [(const_int 0)])

;;      mov     #3,r4
;;      and     r4,r1   ->      mov     r1,r0
;;      mov     r1,r0           and     #3,r0
(define_code_iterator ANDIORXOR [and ior xor])
(define_peephole2
  [(set (match_operand:SI 0 "register_operand")
        (match_operand:SI 1 "const_logical_operand"))
   (set (match_operand:SI 2) (ANDIORXOR:SI (match_dup 2) (match_dup 0)))
   (set (reg:SI R0_REG) (match_dup 2))]
  "TARGET_SH1
   && peep2_reg_dead_p (3, operands[0]) && peep2_reg_dead_p (3, operands[2])"
  [(set (reg:SI R0_REG) (match_dup 2))
   (set (reg:SI R0_REG) (ANDIORXOR:SI (reg:SI R0_REG) (match_dup 1)))])

;;      ...     r2,r0           ...     r2,r0
;;      or      r1,r0   ->      or      r0,r1
;;      mov     r0,r1
;;      (r0 dead)
(define_code_iterator ANDIORXORPLUS [and ior xor plus])
(define_peephole2
  [(set (match_operand:SI 0 "arith_reg_dest")
        (ANDIORXORPLUS:SI (match_dup 0) (match_operand:SI 1 "arith_reg_dest")))
   (set (match_dup 1) (match_dup 0))]
  "TARGET_SH1 && peep2_reg_dead_p (2, operands[0])"
  [(set (match_dup 1) (ANDIORXORPLUS:SI (match_dup 1) (match_dup 0)))])

;;      mov     r12,r0
;;      add     #-48,r0     ->  add     #-48,r12
;;      mov.l   r0,@(4,r10)     mov.l   r12,@(4,r10)
;;      (r12 dead)
(define_peephole2
  [(set (match_operand:SI 0 "arith_reg_dest")
        (match_operand:SI 1 "arith_reg_dest"))
   (set (match_dup 0) (plus:SI (match_dup 0)
                               (match_operand:SI 2 "const_int_operand")))
   (set (match_operand:SI 3 "general_movdst_operand") (match_dup 0))]
  "TARGET_SH1
   && peep2_reg_dead_p (2, operands[1]) && peep2_reg_dead_p (3, operands[0])"
  [(const_int 0)]
{
  emit_insn (gen_addsi3 (operands[1], operands[1], operands[2]));
  sh_peephole_emit_move_insn (operands[3], operands[1]);
})

;;      mov.l   @(r0,r9),r1
;;      mov     r1,r0       ->  mov     @(r0,r9),r0
(define_peephole2
  [(set (match_operand:SI 0 "arith_reg_dest")
        (match_operand:SI 1 "general_movsrc_operand"))
   (set (match_operand:SI 2 "arith_reg_dest")
        (match_dup 0))]
  "TARGET_SH1 && peep2_reg_dead_p (2, operands[0])"
  [(const_int 0)]
{
  sh_peephole_emit_move_insn (operands[2], operands[1]);
})

(define_peephole2
  [(set (match_operand:QIHI 0 "register_operand")
        (match_operand:QIHI 1 "movsrc_no_disp_mem_operand"))
   (set (match_operand:QIHI 2 "register_operand")
        (match_dup 0))]
  "TARGET_SH1 && peep2_reg_dead_p (2, operands[0])"
  [(const_int 0)]
{
  sh_peephole_emit_move_insn (operands[2], operands[1]);
})

(define_peephole2
  [(set (match_operand:SI 0 "arith_reg_dest")
        (sign_extend:SI (match_operand:QIHI 1 "movsrc_no_disp_mem_operand")))
   (set (match_operand:SI 2 "arith_reg_dest")
        (match_dup 0))]
  "TARGET_SH1 && peep2_reg_dead_p (2, operands[0])"
  [(const_int 0)]
{
  sh_check_add_incdec_notes (emit_insn (gen_extend<mode>si2 (operands[2],
                   sh_remove_overlapping_post_inc (operands[2], operands[1]))));
})

;;      mov.w   @(18,r1),r0 (r0 = HImode)
;;      mov     r0,r1       (r0 = r1 = HImode)          mov.w   @(18,r1),r0
;;      ...     ..,r13      (r13 = SImode)      ->      ...     ..,r13
;;      tst     r1,r13                                  tst     r0,r13
(define_peephole2
  [(set (match_operand 0 "arith_reg_dest")
        (match_operand 1 "arith_reg_dest"))
   (set (match_operand:SI 2 "arith_reg_dest")
        (match_operand:SI 3))
   (set (reg:SI T_REG)
        (eq:SI (and:SI (match_operand:SI 4 "arith_reg_operand")
                       (match_operand:SI 5 "arith_reg_operand"))
               (const_int 0)))]
  "TARGET_SH1
   && peep2_reg_dead_p (3, operands[0])
   && !reg_overlap_mentioned_p (operands[0], operands[3])
   && (REGNO (operands[0]) == REGNO (operands[4])
       || REGNO (operands[0]) == REGNO (operands[5]))
   && (REGNO (operands[2]) == REGNO (operands[4])
       || REGNO (operands[2]) == REGNO (operands[5]))"
  [(const_int 0)]
{
  if (REGNO (operands[1]) == REGNO (operands[2]))
      operands[2] = gen_rtx_REG (SImode, REGNO (operands[0]));

  // We don't know what the new set insn will be in detail.  Just make sure
  // that it still can be recognized and the constraints are satisfied.
  rtx_insn* i = emit_insn (gen_rtx_SET (operands[2],
                    sh_remove_overlapping_post_inc (operands[2], operands[3])));

  recog_data_d prev_recog_data = recog_data;
  bool i_invalid = insn_invalid_p (i, false); 
  recog_data = prev_recog_data;
  
  if (i_invalid)
    FAIL;
    
  sh_check_add_incdec_notes (i);

  emit_insn (gen_tstsi_t (operands[2],
                          gen_rtx_REG (SImode, (REGNO (operands[1])))));
})

;;      mov.w   @(18,r1),r0 (r0 = HImode)
;;      ...     ..,r13      (r13 = SImode)              mov.w   @(18,r1),r0
;;      mov     r0,r1       (r0 = r1 = HImode)  ->      ...     ..,r13
;;      tst     r1,r13                                  tst     r0,r13
(define_peephole2
  [(set (match_operand:SI 2 "arith_reg_dest")
        (match_operand:SI 3))
   (set (match_operand 0 "arith_reg_dest")
        (match_operand 1 "arith_reg_operand"))
   (set (reg:SI T_REG)
        (eq:SI (and:SI (match_operand:SI 4 "arith_reg_operand")
                       (match_operand:SI 5 "arith_reg_operand"))
               (const_int 0)))]
  "TARGET_SH1
   && peep2_reg_dead_p (3, operands[0])
   && !reg_overlap_mentioned_p (operands[0], operands[3])
   && (REGNO (operands[0]) == REGNO (operands[4])
       || REGNO (operands[0]) == REGNO (operands[5]))
   && (REGNO (operands[2]) == REGNO (operands[4])
       || REGNO (operands[2]) == REGNO (operands[5]))"
  [(const_int 0)]
{
  // We don't know what the new set insn will be in detail.  Just make sure
  // that it still can be recognized and the constraints are satisfied.
  rtx_insn* i = emit_insn (gen_rtx_SET (operands[2],
                    sh_remove_overlapping_post_inc (operands[2], operands[3])));

  recog_data_d prev_recog_data = recog_data;
  bool i_invalid = insn_invalid_p (i, false); 
  recog_data = prev_recog_data;
  
  if (i_invalid)
    FAIL;
    
  sh_check_add_incdec_notes (i);
  
  emit_insn (gen_tstsi_t (operands[2],
                          gen_rtx_REG (SImode, (REGNO (operands[1])))));
})

;; This is not a peephole, but it's here because it's actually supposed
;; to be one.  It tries to convert a sequence such as
;;      movt    r2      ->      movt    r2
;;      movt    r13             mov     r2,r13
;; This gives the schduler a bit more freedom to hoist a following
;; comparison insn.  Moreover, it the reg-reg mov insn is MT group which has
;; better chances for parallel execution.
;; We can do this with a peephole2 pattern, but then the cprop_hardreg
;; pass will revert the change.  See also PR 64331.
;; Thus do it manually in one of the split passes after register allocation.
;; Sometimes the cprop_hardreg pass might also eliminate the reg-reg copy.
(define_split
  [(set (match_operand:SI 0 "arith_reg_dest")
        (match_operand:SI 1 "t_reg_operand"))]
  "TARGET_SH1 && reload_completed"
  [(set (match_dup 0) (match_dup 1))]
{
  rtx t_reg = get_t_reg_rtx ();

  for (rtx_insn* i = prev_nonnote_insn_bb (curr_insn); i != NULL;
       i = prev_nonnote_insn_bb (i))
    {
      if (!INSN_P (i) || DEBUG_INSN_P (i))
        continue;

      if (modified_in_p (t_reg, i) || BARRIER_P (i))
        FAIL;

      if (sh_is_movt_insn (i))
        {
          rtx r = sh_movt_set_dest (i);
          if (!modified_between_p (r, i, curr_insn))
            {
              operands[1] = r;
              break;
           }
        }
    }
})

(define_peephole
  [(set (match_operand:SI 0 "register_operand" "=r")
        (plus:SI (match_dup 0) (match_operand:SI 1 "register_operand" "r")))
   (set (mem:SF (match_dup 0))
        (match_operand:SF 2 "general_movsrc_operand" ""))]
  "TARGET_SH1 && REGNO (operands[0]) == 0
   && ((REG_P (operands[2]) && REGNO (operands[2]) < 16)
       || (GET_CODE (operands[2]) == SUBREG
           && REGNO (SUBREG_REG (operands[2])) < 16))
   && reg_unused_after (operands[0], insn)"
  "mov.l        %2,@(%0,%1)")

(define_peephole
  [(set (match_operand:SI 0 "register_operand" "=r")
        (plus:SI (match_dup 0) (match_operand:SI 1 "register_operand" "r")))
   (set (match_operand:SF 2 "general_movdst_operand" "")

        (mem:SF (match_dup 0)))]
  "TARGET_SH1 && REGNO (operands[0]) == 0
   && ((REG_P (operands[2]) && REGNO (operands[2]) < 16)
       || (GET_CODE (operands[2]) == SUBREG
           && REGNO (SUBREG_REG (operands[2])) < 16))
   && reg_unused_after (operands[0], insn)"
  "mov.l        @(%0,%1),%2")

(define_peephole
  [(set (match_operand:SI 0 "register_operand" "=r")
        (plus:SI (match_dup 0) (match_operand:SI 1 "register_operand" "r")))
   (set (mem:SF (match_dup 0))
        (match_operand:SF 2 "general_movsrc_operand" ""))]
  "TARGET_SH2E && REGNO (operands[0]) == 0
   && ((REG_P (operands[2])
        && FP_OR_XD_REGISTER_P (REGNO (operands[2])))
       || (GET_CODE (operands[2]) == SUBREG
           && FP_OR_XD_REGISTER_P (REGNO (SUBREG_REG (operands[2])))))
   && reg_unused_after (operands[0], insn)"
  "fmov{.s|}    %2,@(%0,%1)")

(define_peephole
  [(set (match_operand:SI 0 "register_operand" "=r")
        (plus:SI (match_dup 0) (match_operand:SI 1 "register_operand" "r")))
   (set (match_operand:SF 2 "general_movdst_operand" "")

        (mem:SF (match_dup 0)))]
  "TARGET_SH2E && REGNO (operands[0]) == 0
   && ((REG_P (operands[2])
        && FP_OR_XD_REGISTER_P (REGNO (operands[2])))
       || (GET_CODE (operands[2]) == SUBREG
           && FP_OR_XD_REGISTER_P (REGNO (SUBREG_REG (operands[2])))))
   && reg_unused_after (operands[0], insn)"
  "fmov{.s|}    @(%0,%1),%2")

;; Switch to a new stack with its address in sp_switch (a SYMBOL_REF).
(define_insn "sp_switch_1"
  [(set (reg:SI SP_REG) (unspec_volatile [(match_operand:SI 0 "" "")]
    UNSPECV_SP_SWITCH_B))]
  "TARGET_SH1"
{
  return       "mov.l   r0,@-r15"       "\n"
         "      mov.l   %0,r0"          "\n"
         "      mov.l   @r0,r0"         "\n"
         "      mov.l   r15,@-r0"       "\n"
         "      mov     r0,r15";
}
  [(set_attr "length" "10")])

;; Switch back to the original stack for interrupt functions with the
;; sp_switch attribute.
(define_insn "sp_switch_2"
  [(unspec_volatile [(const_int 0)]
    UNSPECV_SP_SWITCH_E)]
  "TARGET_SH1"
{
  return       "mov.l   @r15,r15"       "\n"
         "      mov.l   @r15+,r0";
}
  [(set_attr "length" "4")])


;; In user mode, the "pref" instruction will raise a RADDERR exception
;; for accesses to [0x80000000,0xffffffff].  This makes it an unsuitable
;; implementation of __builtin_prefetch for VxWorks RTPs.
(define_expand "prefetch"
  [(prefetch (match_operand 0 "address_operand" "")
             (match_operand:SI 1 "const_int_operand" "")
             (match_operand:SI 2 "const_int_operand" ""))]
  "(TARGET_SH2A || TARGET_SH3) && !TARGET_VXWORKS_RTP")

(define_insn "*prefetch"
  [(prefetch (match_operand:SI 0 "register_operand" "r")
             (match_operand:SI 1 "const_int_operand" "n")
             (match_operand:SI 2 "const_int_operand" "n"))]
  "(TARGET_SH2A || TARGET_SH3) && ! TARGET_VXWORKS_RTP"
  "pref @%0"
  [(set_attr "type" "other")])

;; -------------------------------------------------------------------------
;; Stack Protector Patterns
;; -------------------------------------------------------------------------

(define_expand "stack_protect_set"
  [(set (match_operand 0 "memory_operand" "")
        (match_operand 1 "memory_operand" ""))]
  ""
{
  emit_insn (gen_stack_protect_set_si (operands[0], operands[1]));
  DONE;
})

(define_insn "stack_protect_set_si"
  [(set (match_operand:SI 0 "memory_operand" "=m")
        (unspec:SI [(match_operand:SI 1 "memory_operand" "m")] UNSPEC_SP_SET))
   (set (match_scratch:SI 2 "=&r") (const_int 0))]
  ""
{
  return       "mov.l   %1,%2"  "\n"
         "      mov.l   %2,%0"  "\n"
         "      mov     #0,%2";
}
  [(set_attr "type" "other")
   (set_attr "length" "6")])

(define_expand "stack_protect_test"
  [(match_operand 0 "memory_operand" "")
   (match_operand 1 "memory_operand" "")
   (match_operand 2 "" "")]
  ""
{
  emit_insn (gen_stack_protect_test_si (operands[0], operands[1]));
  emit_jump_insn (gen_branch_true (operands[2]));
  DONE;
})

(define_insn "stack_protect_test_si"
  [(set (reg:SI T_REG)
        (unspec:SI [(match_operand:SI 0 "memory_operand" "m")
                    (match_operand:SI 1 "memory_operand" "m")]
                   UNSPEC_SP_TEST))
  (set (match_scratch:SI 2 "=&r") (const_int 0))
  (set (match_scratch:SI 3 "=&r") (const_int 0))]
  ""
{
  return       "mov.l   %0,%2"  "\n"
         "      mov.l   %1,%3"  "\n"
         "      cmp/eq  %2,%3"  "\n"
         "      mov     #0,%2"  "\n"
         "      mov     #0,%3";
}
  [(set_attr "type" "other")
   (set_attr "length" "10")])

;; -------------------------------------------------------------------------
;; Atomic operations
;; -------------------------------------------------------------------------

(include "sync.md")