;; Machine description for C-SKY processors.
;; Copyright (C) 2018-2020 Free Software Foundation, Inc.
;; Contributed by C-SKY Microsystems and Mentor Graphics.
;;
;; 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/>.  */


;; ------------------------------------------------------------------------
;; Constant
;; ------------------------------------------------------------------------

;; Register numbering.

(define_constants
  [(CSKY_NGPR_REGS			32)
   (CSKY_NPARM_REGS			4)
   (CSKY_FIRST_PARM_REGNUM		0)
   (CSKY_FIRST_RET_REGNUM		0)
   (CSKY_FIRST_VFP_REGNUM		52)
   (CSKY_LAST_VFP_REGNUM		67)
   (CSKY_FIRST_HIGH_REGNUM		16)
   (CSKY_LAST_HIGH_REGNUM		31)
   (CSKY_FIRST_MINI_REGNUM		0)
   (CSKY_LAST_MINI_REGNUM		7)
   (CSKY_T0_REGNUM			12)
   (CSKY_T1_REGNUM			13)
   (CSKY_SP_REGNUM			14)
   (CSKY_CC_REGNUM			33)
   (CSKY_HI_REGNUM			34)
   (CSKY_LO_REGNUM			35)
   (CSKY_LR_REGNUM			15)
   (CSKY_LAST_HIGH_UNFIXED_REGNUM	25)
   (CSKY_GB_REGNUM			28)
   (CSKY_TLS_REGNUM			31)
   (CSKY_FIRST_EH_RETDATA_REGNUM	0)
   (CSKY_LAST_EH_RETDATA_REGNUM		1)
   (CSKY_EH_STACKADJ_REGNUM		2)
   (CSKY_STACKADJUST_REGNUM		4)
])

;; Supported TLS relocations.

(define_constants
  [(TLS_GD32		   0)
   (TLS_LDM32		   1)
   (TLS_LDO32		   2)
   (TLS_IE32		   3)
   (TLS_LE32		   4)
])

;; Unspec constants.

(define_c_enum "unspec"
  [
   ; Push or pop multiple operation: operand 0 is the first register,
   ; subsequent registers are in parallel (use ...) expressions.
   UNSPEC_PUSHPOP_MULT

   ; Represent TLS base, TLS offset, and TLS base + offset, respectively.
   UNSPEC_TLS_BASE
   UNSPEC_TLS_LABEL
   UNSPEC_TLS

   ; PIC symbol relocations.
   UNSPEC_PIC_SYMBOL_GOTPC
   UNSPEC_PIC_SYMBOL_GOTPC_GRS
   UNSPEC_PIC_SYMBOL_GOTOFF
   UNSPEC_PIC_SYMBOL_GOT
   UNSPEC_PIC_SYMBOL_PLT
   UNSPEC_PIC_SYMBOL_BSR
   UNSPEC_PIC_SYMBOL_GRS

   ; casesi dispatch table.
   UNSPEC_CSKY_CASESI
  ])


(define_c_enum "unspecv"
  [
   ; Used for constant pools.
   VUNSPEC_ALIGN
   VUNSPEC_POOL_LABEL
   VUNSPEC_POOL_4
   VUNSPEC_POOL_8
   VUNSPEC_SYMBOL_REF

   ; Support for the eh_return pattern.
   VUNSPEC_EH_RETURN
  ])


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

;; LENGTH of an instruction (in bytes).

(define_attr "length" ""
  (if_then_else (match_test "CSKY_TARGET_ARCH (CK801)")
    (const_int 2)
    (const_int 4)))

;; Used for ck801 to represent whether we need to use bsr for long
;; distance jumps.  If set to yes, the function will save lr in the
;; prologue.

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

;; Used for insn schedule.

(define_attr "type"
    "alu,load,store,cmp,branch,cbranch,addsub,alu_ix,branch_jmp,call_jsr,call"
    (const_string "alu"))


;; ------------------------------------------------------------------------
;; Include files
;; ------------------------------------------------------------------------

(include "constraints.md")
(include "predicates.md")
(include "csky_insn_fpu.md")
(include "csky_insn_dsp.md")
(include "csky_pipeline_ck801.md")
(include "csky_pipeline_ck802.md")
(include "csky_pipeline_ck803.md")
(include "csky_pipeline_ck810.md")

;; ------------------------------------------------------------------------
;; Mov insns
;; ------------------------------------------------------------------------

(define_mode_iterator QHI [QI HI])

(define_expand "movsi"
  [(set (match_operand:SI 0 "general_operand" "")
	(match_operand:SI 1 "general_operand" ""))]
  ""
  "
  {
    rtx scratch = !can_create_pseudo_p () ? operands[0] : 0;
    if (can_create_pseudo_p () && MEM_P (operands[0]))
      {
	operands[1] = force_reg (SImode, operands[1]);
	emit_insn (gen_rtx_SET (operands[0], operands[1]));
	DONE;
      }

    /* Recognize the case where operand[1] is a reference to thread-local
       data and load its address to a register.  */
    if (csky_tls_referenced_p (operands[1]))
      {
	rtx tmp = operands[1];
	rtx addend = NULL;

	if (GET_CODE (tmp) == CONST && GET_CODE (XEXP (tmp, 0)) == PLUS)
	  {
	    addend = XEXP (XEXP (tmp, 0), 1);
	    tmp = XEXP (XEXP (tmp, 0), 0);
	  }

	gcc_assert (GET_CODE (tmp) == SYMBOL_REF);
	gcc_assert (SYMBOL_REF_TLS_MODEL (tmp) != 0);

	tmp = csky_legitimize_tls_address (tmp, scratch);
	if (addend)
	  {
	    tmp = gen_rtx_PLUS (SImode, tmp, addend);
	    tmp = force_operand (tmp, operands[0]);
	  }
	operands[1] = tmp;
      }
    else if (flag_pic
	     && (CONSTANT_P (operands[1])
		 || csky_symbol_mentioned_p (operands[1])
		 || csky_label_mentioned_p (operands[1])))
	operands[1] = csky_legitimize_pic_address (operands[1], scratch, true);
  }"
)

;; Note that we conservatively estimate all load and store insns as having
;; a size of 4 bytes throughout even though some variants can be encoded
;; as 2-byte machine instructions.  Getting more accurate instruction counts
;; would be better handled by calling into a C function than encoding it
;; as an RTL conditional here.
;; Also note that we don't count the extra space required for constant
;; pool entries here; that's handled by the constant pool entries themselves.
;; In -mno-constpool cases where we're relying on the assembler to create
;; the constant pool, we'll undercount branch lengths, but in that case the
;; assembler also handles branch relaxation as needed.  It's only ck801 that
;; requires compiler cooperation when long branches are needed.

(define_insn "*cskyv2_movsi"
  [(set (match_operand:SI 0 "nonimmediate_operand"  "=b,r,r,r, r, r, r,r,  m,r,*y,*r,*v,*r,*v")
	(match_operand:SI 1 "general_operand"	    " b,r,I,Un,Uc,Uo,m,miF,r,c,*r,*y,*r,*v,*v"))]
  "CSKY_ISA_FEATURE (E2)"
  "* return csky_output_move (insn, operands, SImode);"
  [(set_attr "length" "2,4,4,4,4,8,4,4,4,4,4,4,4,4,4")
   (set_attr "type" "alu,alu,alu,alu,alu,alu,load,load,store,alu,alu,alu,alu,alu,alu")]
)

(define_insn "*ck801_movsi"
  [(set (match_operand:SI 0 "nonimmediate_operand"   "=r,a, a,r,r,  m,r")
	(match_operand:SI 1 "general_operand"	     "r, Up,T,m,miF,r,c"))]
  "CSKY_ISA_FEATURE (E1)"
  "* return csky_output_ck801_move (insn, operands, SImode);"
  [(set_attr "length" "2,2,2,4,4,4,2")
   (set_attr "type" "alu,alu,alu,load,load,store,alu")]
)

;; Convert negative assignments to zero minus positive numbers.
(define_split
  [(set (match_operand:SI 0 "register_operand" "")
	(match_operand:SI 1 "const_int_operand" ""))]
    "satisfies_constraint_T (operands[1])"
    [(set (match_dup 0) (match_dup 2))
     (set (match_dup 0) (plus:SI (match_dup 0) (match_dup 1)))]
    "operands[2] = const0_rtx;"
)

;; Convert const assignments to small number of assignments and left shift.
(define_split
  [(set (match_operand:SI 0 "register_operand" "")
	(match_operand:SI 1 "const_int_operand" ""))]
  ""
  [(set (match_dup 0) (match_dup 1))
   (set (match_dup 0) (ashift:SI (match_dup 0) (match_dup 2)))]
  "
  {
    unsigned int base, shift;

    if (!csky_shifted_imm8_constant (INTVAL (operands[1]), &base, &shift))
      FAIL;
    if (shift == 0)
      FAIL;
    operands[1] = GEN_INT (base);
    operands[2] = GEN_INT (shift);
  }"
)


(define_expand "movhi"
  [(set (match_operand:HI 0 "general_operand" "")
	(match_operand:HI 1 "general_operand"  ""))]
  ""
  "
  {
    if (GET_CODE (operands[0]) == MEM)
	operands[1] = force_reg (HImode, operands[1]);
    else if (CONSTANT_P (operands[1])
	     && (GET_CODE (operands[1]) != CONST_INT
		 || (! CSKY_CONST_OK_FOR_I (INTVAL (operands[1]))
		     && ! CSKY_CONST_OK_FOR_Ub (INTVAL (operands[1]))
		     && ! CSKY_CONST_OK_FOR_Uc (INTVAL (operands[1]))))
	     && ! reload_completed && ! reload_in_progress)
      {
	rtx reg = gen_reg_rtx (SImode);
	emit_insn (gen_movsi (reg, operands[1]));
	operands[1] = gen_lowpart (HImode, reg);
      }
  }"
)

(define_insn "*cskyv2_movhi"
  [(set (match_operand:HI 0 "nonimmediate_operand"  "=b,r,r,r, r, r, r,r,  m,r,*y,*r,*v,*r,*v")
	(match_operand:HI 1 "general_operand"	    " b,r,I,Un,Uc,Uo,m,miF,r,c,*r,*y,*r,*v,*v"))]
  "CSKY_ISA_FEATURE (E2)"
  "* return csky_output_move (insn, operands, HImode);"
  [(set_attr "length" "2,4,4,4,4,8,4,4,4,4,4,4,4,4,4")
   (set_attr "type" "alu,alu,alu,alu,alu,alu,load,load,store,alu,alu,alu,alu,alu,alu")]
)

(define_insn "*ck801_movhi"
  [(set (match_operand:HI 0 "nonimmediate_operand"   "=r,a, a,r,r,  m,r")
	(match_operand:HI 1 "general_operand"	     "r, Up,T,m,miF,r,c"))]
  "CSKY_ISA_FEATURE (E1)"
  "* return csky_output_ck801_move (insn, operands, HImode);"
  [(set_attr "length" "2,2,2,4,4,4,2")
   (set_attr "type" "alu,alu,alu,load,load,store,alu")]
)


(define_expand "movqi"
  [(set (match_operand:QI 0 "general_operand" "")
	(match_operand:QI 1 "general_operand"  ""))]
  ""
  "
  {
    if (can_create_pseudo_p () && GET_CODE (operands[0]) == MEM)
	operands[1] = force_reg (QImode, operands[1]);
    else if (CONSTANT_P (operands[1])
	     && (GET_CODE (operands[1]) != CONST_INT
		 || (! CSKY_CONST_OK_FOR_I (INTVAL (operands[1]))
		     && ! CSKY_CONST_OK_FOR_Ub (INTVAL (operands[1]))
		     && ! CSKY_CONST_OK_FOR_Uc (INTVAL (operands[1]))))
	     && ! reload_completed && ! reload_in_progress)
      {
	rtx reg = gen_reg_rtx (SImode);
	emit_insn (gen_movsi (reg, operands[1]));
	operands[1] = gen_lowpart (QImode, reg);
      }
  }"
)

(define_insn "*cskyv2_movqi"
  [(set (match_operand:QI 0 "nonimmediate_operand"  "=b,r,r,r, r, r, r,r,  m,r,*y,*r,*v,*r,*v")
	(match_operand:QI 1 "general_operand"	    " b,r,I,Un,Uc,Uo,m,miF,r,c,*r,*y,*r,*v,*v"))]
  "CSKY_ISA_FEATURE (E2)"
  "* return csky_output_move (insn, operands, QImode);"
  [(set_attr "length" "2,4,4,4,4,8,4,4,4,4,4,4,4,4,4")
   (set_attr "type" "alu,alu,alu,alu,alu,alu,load,load,store,alu,alu,alu,alu,alu,alu")]
)

(define_insn "*ck801_movqi"
  [(set (match_operand:QI 0 "nonimmediate_operand"   "=r,a, a,r,r,  m,r")
	(match_operand:QI 1 "general_operand"	     "r, Up,T,m,miF,r,c"))]
  "CSKY_ISA_FEATURE (E1)"
  "* return csky_output_ck801_move (insn, operands, QImode);"
  [(set_attr "length" "2,2,2,4,4,4,2")
   (set_attr "type" "alu,alu,alu,load,load,store,alu")]
)


(define_expand "movdi"
  [(set (match_operand:DI 0 "general_operand" "")
	(match_operand:DI 1 "general_operand" ""))]
  ""
  "if (can_create_pseudo_p () && GET_CODE (operands[0]) == MEM)
      operands[1] = force_reg (DImode, operands[1]);"
)

;; Convert negative assignments to zero minus positive numbers.
(define_split
  [(set (match_operand:QHI 0 "register_operand" "")
	(match_operand:QHI 1 "const_int_operand" ""))]
  "satisfies_constraint_T (operands[1])"
  [(set (match_dup 4) (match_dup 2))
   (set (match_dup 4) (match_dup 3))
   (set (match_dup 0) (match_dup 5))]
  "
  {
    int low;

    if (TARGET_BIG_ENDIAN)
      low = 4 - mode_size[GET_MODE (operands[0])];
    else
      low = 0;
    operands[2] = const0_rtx;
    if (can_create_pseudo_p ())
      operands[4] = gen_reg_rtx (SImode);
    else
      operands[4] = gen_rtx_REG (SImode, REGNO (operands[0]));
    operands[3] = gen_rtx_PLUS (SImode, operands[4], operands[1]);
    operands[5] = gen_rtx_SUBREG (GET_MODE (operands[0]), operands[4], low);
  }"
)

;; Convert const assignments to small number of assignments and left shift.
(define_split
  [(set (match_operand:QHI 0 "register_operand" "")
	(match_operand:QHI 1 "const_int_operand" ""))]
  ""
  [(set (match_dup 3) (match_dup 1))
   (set (match_dup 3) (ashift:SI (match_dup 3) (match_dup 2)))
   (set (match_dup 0) (match_dup 4))]
  "
  {
    unsigned int base, shift;
    int low;

    if (!csky_shifted_imm8_constant (INTVAL (operands[1]), &base, &shift))
      FAIL;
    if (shift == 0)
      FAIL;

    if (TARGET_BIG_ENDIAN)
      low = 4 - mode_size[GET_MODE (operands[0])];
    else
      low = 0;

    operands[1] = GEN_INT (base);
    operands[2] = GEN_INT (shift);
    if (can_create_pseudo_p ())
      operands[3] = gen_reg_rtx (SImode);
    else
      operands[3] = gen_rtx_REG (SImode, REGNO (operands[0]));
    operands[4] = gen_rtx_SUBREG (GET_MODE (operands[0]), operands[3], low);
  }"
)


(define_insn "*csky_movdi"
  [(set (match_operand:DI 0 "nonimmediate_operand"  "=b,r,r, r,r,  m,*r,*y,*v,*r,*v")
	(match_operand:DI 1 "general_operand"	    " b,r,Ud,m,miF,r,*y,*r,*r,*v,*v"))]
 "CSKY_ISA_FEATURE (E2)"
 "* return csky_output_movedouble (operands, DImode);"
 [(set_attr "length" "4,8,8,8,8,8,16,16,16,16,16")
  (set_attr "type" "alu,alu,alu,load,load,store,alu,alu,alu,alu,alu")]
)

(define_insn "*ck801_movdi"
  [(set (match_operand:DI 0 "nonimmediate_operand"  "=r,a, a,r,r,  m")
	(match_operand:DI 1 "general_operand"	    "r, Up,T,m,miF,r"))]
  "CSKY_ISA_FEATURE (E1)"
  "* return csky_output_ck801_movedouble (operands, DImode);"
  [(set_attr "length" "4,4,4,8,8,8")
   (set_attr "type" "alu,alu,alu,load,load,store")]
)

;; Float mov instructions.

(define_expand "movsf"
  [(set (match_operand:SF 0 "general_operand" "")
	(match_operand:SF 1 "general_operand" ""))]
  ""
  "
  if (GET_CODE (operands[0]) == MEM && can_create_pseudo_p ())
    operands[1] = force_reg (SFmode, operands[1]);
  "
)

;; FIXME: maybe the vreg load/stores should have their own type attr.
(define_insn "*csky_movsf_fpv2"
  [(set (match_operand:SF 0 "nonimmediate_operand" "=b,r,v,r,r,r, m,Q,v,v,v")
	(match_operand:SF 1 "general_operand"	   " b,r,r,v,m,mF,r,v,Q,v,m"))]
  "CSKY_ISA_FEATURE (fpv2_sf)"
  "* return csky_output_move (insn, operands, SFmode);"
  [(set_attr "length" "2,4,4,4,4,4,4,4,4,4,4")
   (set_attr "type" "alu,alu,alu,alu,load,load,store,alu,alu,alu,alu")]
)

(define_insn "*ck801_movsf"
  [(set (match_operand:SF 0 "nonimmediate_operand" "=r,r,r, m")
	(match_operand:SF 1 "general_operand"	   " r,m,mF,r"))]
  "CSKY_ISA_FEATURE (E1)"
  "* return csky_output_ck801_move (insn, operands, SFmode);"
  [(set_attr "length" "2,4,4,4")
   (set_attr "type" "alu,load,load,store")]
)

(define_insn "*csky_movsf"
  [(set (match_operand:SF 0 "nonimmediate_operand" "=b,r,r,r, m")
	(match_operand:SF 1 "general_operand"	   " b,r,m,mF,r"))]
  "CSKY_ISA_FEATURE (E2) && !CSKY_ISA_FEATURE (fpv2_sf)"
  "* return csky_output_move (insn, operands, SFmode);"
 [(set_attr "length" "2,4,4,4,4")
  (set_attr "type" "alu,alu,load,load,store")]
)


(define_expand "movdf"
  [(set (match_operand:DF 0 "general_operand" "")
	(match_operand:DF 1 "general_operand" ""))]
  ""
  "
  if (GET_CODE (operands[0]) == MEM && can_create_pseudo_p ())
      operands[1] = force_reg (DFmode, operands[1]);
  "
)

;; FIXME: maybe the vreg load/stores should have their own type attr.
(define_insn "*csky_movdf_fpv2"
  [(set (match_operand:DF 0 "nonimmediate_operand" "=b,r,v,r,r,r, m,Q,v,v,v")
	(match_operand:DF 1 "general_operand"	    "b,r,r,v,m,mF,r,v,Q,v,m"))]
  "CSKY_ISA_FEATURE (fpv2_df)"
  "* return csky_output_movedouble (operands, DFmode);"
  [(set_attr "length" "4,8,8,8,8,8,8,8,8,8,8")
   (set_attr "type" "alu,alu,alu,alu,load,load,store,alu,alu,alu,alu")]
)

(define_insn "*ck801_movdf"
  [(set (match_operand:DF 0 "nonimmediate_operand" "=r,r,r, m")
	(match_operand:DF 1 "general_operand"	   " r,m,mF,r"))]
  "CSKY_ISA_FEATURE (E1)"
  "* return csky_output_ck801_movedouble (operands, DFmode);"
  [(set_attr "length" "4,8,8,8")
   (set_attr "type" "alu,load,load,store")]
)

(define_insn "*csky_movdf"
  [(set (match_operand:DF 0 "nonimmediate_operand" "=b,r,r,r, m")
	(match_operand:DF 1 "general_operand"	   " b,r,m,mF,r"))]
  "CSKY_ISA_FEATURE (E2) && !CSKY_ISA_FEATURE (fpv2_df)"
  "* return csky_output_movedouble (operands, DFmode);"
 [(set_attr "length" "4,8,8,8,8")
  (set_attr "type" "alu,alu,load,load,store")]
)

;; The only CCmode move supported is a nop.  Without this pattern,
;; CSE is unable to eliminate redundant comparisons in conditional
;; execution expressions.

(define_insn "*movcc_nop"
  [(set (reg:CC CSKY_CC_REGNUM) (reg:CC CSKY_CC_REGNUM))]
  ""
  ""
  [(set_attr "length" "0")]
)

;; ------------------------------------------------------------------------
;; Conditional mov insns
;; ------------------------------------------------------------------------

;; Only handle integer comparisons because float and double require
;; library calls.

(define_expand "movsicc"
  [(set (match_operand 0 "register_operand" "")
	(if_then_else:SI (match_operand	   1 "ordered_comparison_operator" "")
			 (match_operand:SI 2 "register_operand" "")
			 (match_operand:SI 3 "register_operand" "")))]
  "CSKY_ISA_FEATURE (E2)"
  "
  {
    bool invert = csky_emit_compare (GET_CODE (operands[1]),
				     XEXP (operands[1], 0),
				     XEXP (operands[1], 1));

    if (invert)
      emit_insn (gen_movf (operands[0], operands[2], operands[3]));
    else
      emit_insn (gen_movt (operands[0], operands[2], operands[3]));
    DONE;
  }")

(define_insn "movt"
  [(set (match_operand:SI 0 "register_operand" "=r, r")
	(if_then_else:SI (ne (reg:CC CSKY_CC_REGNUM) (const_int 0))
			 (match_operand:SI 1 "register_operand" "r, 0")
			 (match_operand:SI 2 "register_operand" "0, r")))]
  "CSKY_ISA_FEATURE (E2)"
  "@
    movt\t%0, %1
    movf\t%0, %2"
  [(set_attr "length" "4,4")]
)

(define_insn "movf"
  [(set (match_operand:SI 0 "register_operand" "=r, r")
	(if_then_else:SI (eq (reg:CC CSKY_CC_REGNUM) (const_int 0))
			 (match_operand:SI 1 "register_operand" "r, 0")
			 (match_operand:SI 2 "register_operand" "0, r")))]
  "CSKY_ISA_FEATURE (E2)"
  "@
    movf\t%0, %1
    movt\t%0, %2"
  [(set_attr "length" "4,4")]
)

(define_expand "cstoresi4"
  [(set (match_operand:SI 0 "register_operand" "")
	(match_operator	  1 "ordered_comparison_operator"
	  [(match_operand:SI 2 "csky_compare_operand" "")
	   (match_operand:SI 3 "nonmemory_operand" "")]))]
  ""
  "
  {
    bool invert = csky_emit_compare (GET_CODE (operands[1]),
				     operands[2], operands[3]);

    if (invert)
      emit_insn (gen_mvcv (operands[0]));
    else if (CSKY_ISA_FEATURE (E1))
      {
	emit_insn (gen_movsi (operands[0], const0_rtx));
	emit_insn (gen_ck801_addc (operands[0], operands[0], operands[0]));
      }
    else
      emit_insn (gen_mvc (operands[0]));
    DONE;
  }"
)

(define_insn "mvc"
  [(set (match_operand:SI 0 "register_operand" "=r")
	(ne:SI (reg:CC CSKY_CC_REGNUM) (const_int 0)))]
  "CSKY_ISA_FEATURE (E2)"
  "mvc\t%0"
)

(define_insn "mvcv"
  [(set (match_operand:SI 0 "register_operand" "=r")
	(eq:SI (reg:CC CSKY_CC_REGNUM) (const_int 0)))]
  ""
  "mvcv\t%0"
)

;; ------------------------------------------------------------------------
;; Arithmetic insns
;; ------------------------------------------------------------------------

(define_insn "abssi2"
  [(set (match_operand:SI	  0 "register_operand" "=r")
	(abs:SI (match_operand:SI 1 "register_operand" "r")))]
  "CSKY_ISA_FEATURE (2E3)"
  "abs\t%0, %1"
  [(set_attr "type" "alu")]
)

(define_insn "extvsi"
  [(set (match_operand:SI		   0 "register_operand" "=r")
	(sign_extract:SI (match_operand:SI 1 "register_operand" "r")
			 (match_operand:SI 2 "const_int_operand" "")
			 (match_operand:SI 3 "const_int_operand" "")))]
  "CSKY_ISA_FEATURE (2E3)"
  {
    operands[2] = GEN_INT (INTVAL (operands[3]) + INTVAL (operands[2]) - 1);
    return \"sext\t%0, %1, %2, %3\";
  }
)

(define_insn "insvsi"
  [(set (zero_extract:SI (match_operand:SI 0 "register_operand"	 "+r")
			 (match_operand:SI 1 "const_int_operand" "i")
			 (match_operand:SI 2 "const_int_operand" "i"))
	(match_operand:SI		   3 "register_operand"	 "r"))]
  "CSKY_ISA_FEATURE (2E3)"
  {
    operands[1] = GEN_INT (INTVAL (operands[2]) + INTVAL (operands[1]) - 1);
    return \"ins\t%0, %3, %1, %2\";
  }
)

(define_expand "bseti"
  [(set (match_operand:SI 0 "register_operand"	"")
	(ior:SI (match_operand:SI 1 "register_operand"	"")
		(ashift:SI (const_int 1)
			   (match_operand:SI 2 "csky_literal_K_operand" ""))))]
  ""
  "")

(define_insn "smart_bseti"
  [(set (match_operand:SI 0 "register_operand"	"=r")
	(ior:SI (match_operand:SI 1 "register_operand"	"0")
		(ashift:SI (const_int 1)
			   (match_operand:SI 2 "csky_literal_K_operand" "K"))))]
  "TARGET_MINI_REGISTERS"
  "bseti\t%0, %2"
  [(set_attr "length" "2")])

(define_insn "fast_bseti"
  [(set (match_operand:SI 0 "register_operand"	"=a,r")
	(ior:SI (match_operand:SI 1 "register_operand"	"0,r")
		(ashift:SI (const_int 1)
			   (match_operand:SI 2 "csky_literal_K_operand" "K,K"))))]
  "!TARGET_MINI_REGISTERS"
  "bseti\t%0, %1, %2"
  [(set_attr "length" "2,4")])

(define_expand "bclri"
  [(set (match_operand:SI 0 "register_operand"	"")
	(and:SI (match_operand:SI 1 "register_operand"	"")
		(not:SI (ashift:SI (const_int 1)
				   (match_operand:SI 2 "csky_literal_K_operand" "")))))]
  ""
  "")

(define_insn "smart_bclri"
  [(set (match_operand:SI 0 "register_operand"	"=r")
	(and:SI (match_operand:SI 1 "register_operand"	"0")
		(not:SI (ashift:SI (const_int 1)
				   (match_operand:SI 2 "csky_literal_K_operand" "K")))))]
  "TARGET_MINI_REGISTERS"
  "bclri\t%0, %2"
  [(set_attr "length" "2")])

(define_insn "fast_bclri"
  [(set (match_operand:SI 0 "register_operand"	"=a,r")
	(and:SI (match_operand:SI 1 "register_operand"	"0,r")
		(not:SI (ashift:SI (const_int 1)
				   (match_operand:SI 2 "csky_literal_K_operand" "K,K")))))]
  "!TARGET_MINI_REGISTERS"
  "bclri\t%0, %1, %2"
  [(set_attr "length" "2,4")])


;; Shift instructions.

(define_expand "ashlsi3"
  [(set (match_operand:SI	     0 "register_operand"     "")
	(ashift:SI (match_operand:SI 1 "register_operand"     "")
		   (match_operand:SI 2 "csky_arith_K_operand" "")))]
  ""
  ""
)

(define_insn "*cskyv2_ashlsi3"
  [(set (match_operand:SI	     0 "register_operand"     "=b,r,a,r")
	(ashift:SI (match_operand:SI 1 "register_operand"     "0,r,a,r")
		   (match_operand:SI 2 "csky_arith_K_operand" "b,r,K,K")))]
  "CSKY_ISA_FEATURE (E2)"
  "@
  lsl  %0, %1, %2
  lsl  %0, %1, %2
  lsli %0, %1, %2
  lsli %0, %1, %2"
  [(set_attr "length" "2,4,2,4")]
)

(define_insn "ck801_ashlsi3"
  [(set (match_operand:SI	     0 "register_operand"     "=a,r")
	(ashift:SI (match_operand:SI 1 "register_operand"     "a,0")
		   (match_operand:SI 2 "csky_arith_K_operand" "K,r")))]
  "CSKY_ISA_FEATURE (E1)"
  "@
  lsli %0, %1, %2
  lsl  %0, %1, %2"
)


(define_expand "ashrsi3"
  [(set (match_operand:SI	       0 "register_operand"	"")
	(ashiftrt:SI (match_operand:SI 1 "register_operand"	"")
		     (match_operand:SI 2 "csky_arith_K_operand" "")))]
  ""
  ""
)

(define_insn "*cskyv2_ashrsi3"
  [(set (match_operand:SI	       0 "register_operand"	"=b,r,a,r")
	(ashiftrt:SI (match_operand:SI 1 "register_operand"	"0,r,a,r")
		     (match_operand:SI 2 "csky_arith_K_operand" "b,r,K,K")))]
  "CSKY_ISA_FEATURE (E2)"
  "@
  asr  %0, %1, %2
  asr  %0, %1, %2
  asri %0, %1, %2
  asri %0, %1, %2"
  [(set_attr "length" "2,4,2,4")]
)

(define_insn "*ck801_ashrsi3"
  [(set (match_operand:SI	       0 "register_operand"	"=a,r")
	(ashiftrt:SI (match_operand:SI 1 "register_operand"	"a,0")
		     (match_operand:SI 2 "csky_arith_K_operand" "K,r")))]
  "CSKY_ISA_FEATURE (E1)"
  "@
  asri %0, %1, %2
  asr  %0, %1, %2"
)


(define_expand "lshrsi3"
  [(set (match_operand:SI	       0 "register_operand"	"")
	(lshiftrt:SI (match_operand:SI 1 "register_operand"	"")
		     (match_operand:SI 2 "csky_arith_K_operand" "")))]
  ""
  ""
)

(define_insn "*cskyv2_lshrsi3"
  [(set (match_operand:SI	       0 "register_operand"	"=b,r,a,r")
	(lshiftrt:SI (match_operand:SI 1 "register_operand"	"0,r,a,r")
		     (match_operand:SI 2 "csky_arith_K_operand" "b,r,K,K")))]
  "CSKY_ISA_FEATURE (E2)"
  "@
  lsr  %0, %1, %2
  lsr  %0, %1, %2
  lsri %0, %1, %2
  lsri %0, %1, %2"
  [(set_attr "length" "2,4,2,4")]
)

(define_insn "ck801_lshrsi3"
  [(set (match_operand:SI	       0 "register_operand"	"=a,r")
	(lshiftrt:SI (match_operand:SI 1 "register_operand"	"a,0")
		     (match_operand:SI 2 "csky_arith_K_operand" "K,r")))]
  "CSKY_ISA_FEATURE (E1)"
  "@
  lsri %0, %1, %2
  lsr  %0, %1, %2"
)


(define_expand "rotlsi3"
  [(set (match_operand:SI	     0 "register_operand"     "")
	(rotate:SI (match_operand:SI 1 "register_operand"     "")
		   (match_operand:SI 2 "csky_arith_K_operand" "")))]
  ""
  ""
)

(define_insn "*cskyv2_rotlsi3"
  [(set (match_operand:SI	     0 "register_operand"     "=b,r,r")
	(rotate:SI (match_operand:SI 1 "register_operand"     "0,r,r")
		   (match_operand:SI 2 "csky_arith_K_operand" "b,r,K")))]
  "CSKY_ISA_FEATURE (E2)"
  "@
  rotl	%0, %1, %2
  rotl	%0, %1, %2
  rotli %0, %1, %2"
  [(set_attr "length" "2,4,4")]
)

(define_insn "*ck801_rotlsi3"
  [(set (match_operand:SI	     0 "register_operand"     "=r")
	(rotate:SI (match_operand:SI 1 "register_operand"     "0")
		   (match_operand:SI 2 "csky_arith_K_operand" "r")))]
  "CSKY_ISA_FEATURE (E1)"
  "rotl %0, %1, %2"
)


;; Add instructions.
;; C-SKY addi and subi machine instructions only accept positive immediate
;; values, so we have to special case immediates <= 0 in these patterns.

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

(define_insn "smart_addsi3"
 [(set (match_operand:SI	  0 "register_operand"	"=a,r,a,a,a,a, r,r")
       (plus:SI (match_operand:SI 1 "register_operand"	"%a,0,0,a,0,a, r,r")
		(match_operand:SI 2 "nonmemory_operand" "a, r,N,L,T,Us,M,Um")))]
 "TARGET_MINI_REGISTERS && CSKY_ISA_FEATURE (E2)
  && operands[0] != stack_pointer_rtx
  && operands[1] != stack_pointer_rtx"
 "@
     addu\t%0, %1, %2
     addu\t%0, %1, %2
     addi\t%0, %1, %2
     addi\t%0, %1, %2
     subi\t%0, %1, %M2
     subi\t%0, %1, %M2
     addi\t%0, %1, %2
     subi\t%0, %1, %M2"
  [(set_attr "length" "2,2,2,2,2,2,4,4")
   (set_attr "type" "addsub")]
)

(define_insn_and_split "*smart_addsi3_sp"
  [(set (match_operand:SI	   0 "register_operand"	 "=z,z, z,a,&a,z,a,r")
	(plus:SI (match_operand:SI 1 "register_operand"	 "0, 0, 0,z, z,a,z,r")
		 (match_operand:SI 2 "nonmemory_operand" "P, Ug,r,Uq,i,a,a,M")))]
  "TARGET_MINI_REGISTERS && CSKY_ISA_FEATURE (E2)
    && (operands[0] == stack_pointer_rtx || operands[1] == stack_pointer_rtx)"
  "@
     addi\t%0, %1, %2
     subi\t%0, %1, %M2
     addu\t%0, %1, %2
     addi\t%0, %1, %2
     #
     addu\t%0, %1, %2
     addu\t%0, %1, %2
     addi\t%0, %1, %2"
  "(operands[0] != stack_pointer_rtx
    && operands[1] == stack_pointer_rtx
    && !satisfies_constraint_Uq (operands[2]))"
  [(set (match_dup 0)
	(plus:SI (match_dup 1) (match_dup 0)))]
  "emit_move_insn (operands[0], operands[2]);"
  [(set_attr "type" "addsub")]
)

(define_insn "*ck801_addsi3"
  [(set (match_operand:SI	   0 "register_operand"	 "=r,a,a,a,a,a, !z,!z,!z,a")
	(plus:SI (match_operand:SI 1 "register_operand"	 "%0,a,0,a,0,a, 0, 0, 0, !z")
		 (match_operand:SI 2 "nonmemory_operand" "r, a,N,L,T,Us,P, Ug,r, Uq")))]
  "CSKY_ISA_FEATURE (E1)"
  "@
    addu\t%0, %1, %2
    addu\t%0, %1, %2
    addi\t%0, %1, %2
    addi\t%0, %1, %2
    subi\t%0, %1, %M2
    subi\t%0, %1, %M2
    addi\t%0, %1, %2
    subi\t%0, %1, %M2
    addu\t%0, %1, %2
    addi\t%0, %1, %2"
  [(set_attr "type" "addsub")]
)

(define_insn "fast_addsi3"
  [(set (match_operand:SI	   0 "register_operand"	 "=r,r, r")
	(plus:SI (match_operand:SI 1 "register_operand"	 "%r,r, r")
		 (match_operand:SI 2 "nonmemory_operand" "M, Um,r")))]
  "!TARGET_MINI_REGISTERS && CSKY_ISA_FEATURE (E2)"
  "@
    addi\t%0, %1, %2
    subi\t%0, %1, %M2
    addu\t%0, %1, %2"
  [(set_attr "type" "addsub")]
)

(define_expand "adddi3"
  [(parallel [(set (match_operand:DI 0 "register_operand" "")
		   (plus:DI (match_operand:DI 1 "register_operand" "")
			    (match_operand:DI 2 "csky_arith_int1_operand" "")))
	      (clobber (reg:CC CSKY_CC_REGNUM))])]
  ""
  "
  if (CSKY_ISA_FEATURE (E1) && (GET_CODE (operands[2]) != REG))
      operands[2] = force_reg (DImode, operands[2]);
  "
)

/* Note that the csky addc instruction both reads and writes the carry bit.
   The purpose of the initial cmplt instruction in the expansion is to
   clear the carry bit before adding the lo words.  */

(define_insn_and_split "*cskyv2_adddi3"
  [(set (match_operand:DI	   0 "register_operand" "=&b,&r")
	(plus:DI (match_operand:DI 1 "register_operand" "%0,r")
		 (match_operand:DI 2 "register_operand" "b, r")))
   (clobber (reg:CC CSKY_CC_REGNUM))]
  "CSKY_ISA_FEATURE (E2)"
  "#"
  "reload_completed"
  [(const_int 0)]
  {
    int hi = TARGET_BIG_ENDIAN ? 0 : UNITS_PER_WORD;
    int lo = TARGET_BIG_ENDIAN ? UNITS_PER_WORD : 0;
    rtx l0 = simplify_gen_subreg (SImode, operands[0], DImode, lo);
    rtx h0 = simplify_gen_subreg (SImode, operands[0], DImode, hi);
    rtx l1 = simplify_gen_subreg (SImode, operands[1], DImode, lo);
    rtx h1 = simplify_gen_subreg (SImode, operands[1], DImode, hi);
    rtx l2 = simplify_gen_subreg (SImode, operands[2], DImode, lo);
    rtx h2 = simplify_gen_subreg (SImode, operands[2], DImode, hi);

    emit_insn (gen_cmpltsi_r (copy_rtx (l1), copy_rtx (l1)));
    emit_insn (gen_cskyv2_addc (l0, l1, l2));
    emit_insn (gen_cskyv2_addc (h0, h1, h2));
    DONE;
  }
  [(set_attr "length" "6,12")]
)

(define_insn_and_split "*ck801_adddi3"
  [(set (match_operand:DI	   0 "register_operand" "=r")
	(plus:DI (match_operand:DI 1 "register_operand" "%0")
		 (match_operand:DI 2 "register_operand" "r")))
   (clobber (reg:CC CSKY_CC_REGNUM))]
  "CSKY_ISA_FEATURE (E1)"
  "#"
  "reload_completed"
  [(const_int 0)]
  {
    int hi = TARGET_BIG_ENDIAN ? 0 : UNITS_PER_WORD;
    int lo = TARGET_BIG_ENDIAN ? UNITS_PER_WORD : 0;
    rtx l0 = simplify_gen_subreg (SImode, operands[0], DImode, lo);
    rtx h0 = simplify_gen_subreg (SImode, operands[0], DImode, hi);
    rtx l1 = simplify_gen_subreg (SImode, operands[1], DImode, lo);
    rtx h1 = simplify_gen_subreg (SImode, operands[1], DImode, hi);
    rtx l2 = simplify_gen_subreg (SImode, operands[2], DImode, lo);
    rtx h2 = simplify_gen_subreg (SImode, operands[2], DImode, hi);

    emit_insn (gen_cmpltsi_r (copy_rtx (l1), copy_rtx (l1)));
    emit_insn (gen_ck801_addc (l0, l1, l2));
    emit_insn (gen_ck801_addc (h0, h1, h2));
    DONE;
  }
  [(set_attr "length" "6")]
)

;; Special case for "longlong += 1".

(define_insn_and_split "*cskyv2_adddi1_1"
  [(set (match_operand:DI	   0 "register_operand" "=&r")
	(plus:DI (match_operand:DI 1 "register_operand" "0")
		 (const_int 1)))
   (clobber (reg:CC CSKY_CC_REGNUM))]
  "CSKY_ISA_FEATURE (E2)"
  "#"
  "reload_completed"
  [(const_int 0)]
  {
    int hi = TARGET_BIG_ENDIAN ? 0 : UNITS_PER_WORD;
    int lo = TARGET_BIG_ENDIAN ? UNITS_PER_WORD : 0;
    rtx l0 = simplify_gen_subreg (SImode, operands[0], DImode, lo);
    rtx h0 = simplify_gen_subreg (SImode, operands[0], DImode, hi);

    if (TARGET_MINI_REGISTERS)
      {
	emit_insn (gen_smart_addsi3 (l0, copy_rtx (l0),
				     gen_int_mode (1, SImode)));
	emit_insn (gen_smart_cmpnesi_i (copy_rtx (l0),
					gen_int_mode (0, SImode)));
	emit_insn (gen_cskyv2_addcc_invert (h0, copy_rtx (h0),
					    gen_int_mode (1, SImode)));
      }
    else
      {
	emit_insn (gen_fast_addsi3 (l0, copy_rtx (l0),
				    gen_int_mode (1, SImode)));
	emit_insn (gen_fast_cmpnesi_i (copy_rtx (l0),
				       gen_int_mode (0, SImode)));
	emit_insn (gen_cskyv2_addcc_invert (h0, copy_rtx (h0),
					gen_int_mode (1, SImode)));
      }
    DONE;
  }
  [(set (attr "length")
	(if_then_else (match_test "TARGET_MINI_REGISTERS")
		      (const_int 8)
		      (const_int 12)))]
)

;; sub instructions.

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

(define_insn "smart_subsi3"
  [(set (match_operand:SI	    0 "register_operand"    "=a,a,a,a,a,a")
	(minus:SI (match_operand:SI 1 "register_operand"    "a, 0,0,a,0,a")
		  (match_operand:SI 2 "nonmemory_operand"   "a, a,N,L,T,Us")))]
  "TARGET_MINI_REGISTERS && CSKY_ISA_FEATURE (E2)
   && operands[0] != stack_pointer_rtx
   && operands[1] != stack_pointer_rtx"
  "@
    subu\t%0, %1, %2
    subu\t%0, %1, %2
    subi\t%0, %1, %2
    subi\t%0, %1, %2
    addi\t%0, %1, %M2
    addi\t%0, %1, %M2"
  [(set_attr "length" "2,2,2,2,2,2")
   (set_attr "type" "addsub")]
)

(define_insn "*smart_subsi3_sp"
  [(set (match_operand:SI	    0 "register_operand"  "=z,z, z,a, a,r")
	(minus:SI (match_operand:SI 1 "register_operand"  "0, 0, 0,z, a,r")
		  (match_operand:SI 2 "nonmemory_operand" "P, Ug,a,Ur,a,M")))]
  "TARGET_MINI_REGISTERS && CSKY_ISA_FEATURE (E2)
   && (operands[0] == stack_pointer_rtx || operands[1] == stack_pointer_rtx)"
  "@
    subi\t%0, %1, %2
    addi\t%0, %1, %M2
    subu\t%0, %1, %2
    addi\t%0, %1, %M2
    subu\t%0, %1, %2
    subi\t%0, %1, %2"
  [(set_attr "length" "2,2,2,2,2,4")
   (set_attr "type" "addsub")]
)

(define_insn "*ck801_subsi3"
  [(set (match_operand:SI	    0 "register_operand"    "=a,a,a,a,a,a")
	(minus:SI (match_operand:SI 1 "register_operand"    "0, a,0,a,0,a")
		  (match_operand:SI 2 "nonmemory_operand"   "a, a,N,L,T,Us")))]
  "CSKY_ISA_FEATURE (E1)
   && operands[0] != stack_pointer_rtx
   && operands[1] != stack_pointer_rtx"
  "@
    subu\t%0, %1, %2
    subu\t%0, %1, %2
    subi\t%0, %1, %2
    subi\t%0, %1, %2
    addi\t%0, %1, %M2
    addi\t%0, %1, %M2"
  [(set_attr "type" "addsub")]
)

(define_insn "*ck801_subsi3_sp"
  [(set (match_operand:SI	    0 "register_operand"  "=a,z,z, z")
	(minus:SI (match_operand:SI 1 "register_operand"  "z, 0,0, 0")
		  (match_operand:SI 2 "nonmemory_operand" "Ur,P,Ug,r")))]
  "CSKY_ISA_FEATURE (E1)
   && (operands[0] == stack_pointer_rtx || operands[1] == stack_pointer_rtx)"
  "@
    addi\t%0, %1, %M2
    subi\t%0, %1, %2
    addi\t%0, %1, %M2
    subu\t%0, %1, %2"
  [(set_attr "type" "addsub")]
)

(define_insn "fast_subsi3"
  [(set (match_operand:SI	    0 "register_operand"  "=r,r,r")
	(minus:SI (match_operand:SI 1 "register_operand"  "r, r,r")
		  (match_operand:SI 2 "nonmemory_operand" "r, M,Um")))]
  "!TARGET_MINI_REGISTERS && CSKY_ISA_FEATURE (E2)"
  "@
     subu\t%0, %1, %2
     subi\t%0, %1, %2
     addi\t%0, %1, %M2"
  [(set_attr "type" "addsub")]
)

(define_expand "subdi3"
  [(parallel [(set (match_operand:DI 0 "register_operand" "")
		  (minus:DI (match_operand:DI 1 "register_operand" "")
			    (match_operand:DI 2 "register_operand" "")))
	      (clobber (reg:CC CSKY_CC_REGNUM))])]
  ""
  ""
)

/* Note that the csky subc instruction both reads and writes the C bit.
   The purpose of the initial cmphs instruction in the expansion is to
   set the C bit before subtracting the lo words.  */

(define_insn_and_split "*cskyv2_subdi3"
  [(set (match_operand:DI	    0 "register_operand" "=&b,&r")
	(minus:DI (match_operand:DI 1 "register_operand" "0, r")
		  (match_operand:DI 2 "register_operand" "b, r")))
   (clobber (reg:CC CSKY_CC_REGNUM))]
  "CSKY_ISA_FEATURE (E2)"
  "#"
  "reload_completed"
  [(const_int 0)]
  {
    int hi = TARGET_BIG_ENDIAN ? 0 : UNITS_PER_WORD;
    int lo = TARGET_BIG_ENDIAN ? UNITS_PER_WORD : 0;
    rtx l0 = simplify_gen_subreg (SImode, operands[0], DImode, lo);
    rtx h0 = simplify_gen_subreg (SImode, operands[0], DImode, hi);
    rtx l1 = simplify_gen_subreg (SImode, operands[1], DImode, lo);
    rtx h1 = simplify_gen_subreg (SImode, operands[1], DImode, hi);
    rtx l2 = simplify_gen_subreg (SImode, operands[2], DImode, lo);
    rtx h2 = simplify_gen_subreg (SImode, operands[2], DImode, hi);

    emit_insn (gen_cmpgeusi_r (copy_rtx (l1), copy_rtx (l1)));
    emit_insn (gen_cskyv2_subc (l0, l1, l2));
    emit_insn (gen_cskyv2_subc (h0, h1, h2));
    DONE;
  }
  [(set_attr "length" "6,12")]
)

(define_insn_and_split "*ck801_subdi3"
  [(set (match_operand:DI	    0 "register_operand" "=r")
	(minus:DI (match_operand:DI 1 "register_operand" "0")
		  (match_operand:DI 2 "register_operand" "r")))
   (clobber (reg:CC CSKY_CC_REGNUM))]
  "CSKY_ISA_FEATURE (E1)"
  "#"
  "reload_completed"
  [(const_int 0)]
  {
    int hi = TARGET_BIG_ENDIAN ? 0 : UNITS_PER_WORD;
    int lo = TARGET_BIG_ENDIAN ? UNITS_PER_WORD : 0;
    rtx l0 = simplify_gen_subreg (SImode, operands[0], DImode, lo);
    rtx h0 = simplify_gen_subreg (SImode, operands[0], DImode, hi);
    rtx l1 = simplify_gen_subreg (SImode, operands[1], DImode, lo);
    rtx h1 = simplify_gen_subreg (SImode, operands[1], DImode, hi);
    rtx l2 = simplify_gen_subreg (SImode, operands[2], DImode, lo);
    rtx h2 = simplify_gen_subreg (SImode, operands[2], DImode, hi);

    emit_insn (gen_cmpgeusi_r (copy_rtx (l1), copy_rtx (l1)));
    emit_insn (gen_ck801_subc (l0, l1, l2));
    emit_insn (gen_ck801_subc (h0, h1, h2));
    DONE;
  }
  [(set_attr "length" "6")]
)

;; Special case for "longlong -= 1".

(define_insn_and_split "*cskyv2_subdi1_1"
  [(set (match_operand:DI	   0 "register_operand" "=&r")
	(plus:DI (match_operand:DI 1 "register_operand" "0")
		 (const_int -1)))
   (clobber (reg:CC CSKY_CC_REGNUM))]
  "CSKY_ISA_FEATURE (E2)"
  "#"
  "reload_completed"
  [(const_int 0)]
  {
    int hi = TARGET_BIG_ENDIAN ? 0 : UNITS_PER_WORD;
    int lo = TARGET_BIG_ENDIAN ? UNITS_PER_WORD : 0;
    rtx l0 = simplify_gen_subreg (SImode, operands[0], DImode, lo);
    rtx h0 = simplify_gen_subreg (SImode, operands[0], DImode, hi);

    if (TARGET_MINI_REGISTERS)
      {
	emit_insn (gen_smart_cmpnesi_i (copy_rtx (l0),
					gen_int_mode (0, SImode)));
	emit_insn (gen_cskyv2_addcc_invert (h0, copy_rtx (h0),
					    gen_int_mode (-1, SImode)));
	emit_insn (gen_smart_subsi3 (l0, copy_rtx (l0),
				     gen_int_mode (1, SImode)));
      }
    else
      {
	emit_insn (gen_fast_cmpnesi_i (copy_rtx (l0),
				       gen_int_mode (0, SImode)));
	emit_insn (gen_cskyv2_addcc_invert (h0, copy_rtx (h0),
					    gen_int_mode (-1, SImode)));
	emit_insn (gen_fast_subsi3 (l0, copy_rtx (l0),
				    gen_int_mode (1, SImode)));
      }
    DONE;
  }
  [(set (attr "length")
	(if_then_else (match_test "TARGET_MINI_REGISTERS")
		      (const_int 8)
		      (const_int 12)))]
)

;; Add with carry.

(define_insn "cskyv2_addc"
  [(set (match_operand:SI		    0 "register_operand" "=r,r")
	(plus:SI (ne:SI (reg:CC CSKY_CC_REGNUM) (const_int 0))
		 (plus:SI (match_operand:SI 1 "register_operand" "%0,r")
			  (match_operand:SI 2 "register_operand" "r,r"))))
   (set (reg:CC CSKY_CC_REGNUM)
	(compare:CC
	  (plus:SI (match_dup 1) (match_dup 2))
	  (match_dup 1)))]
  "CSKY_ISA_FEATURE (E2)"
  "addc\t%0, %1, %2"
  [(set_attr "length" "2,4")
   (set_attr "type" "addsub")]
)

(define_insn "ck801_addc"
  [(set (match_operand:SI		    0 "register_operand" "=r")
	(plus:SI (ne:SI (reg:CC CSKY_CC_REGNUM) (const_int 0))
		 (plus:SI (match_operand:SI 1 "register_operand" "%0")
			  (match_operand:SI 2 "register_operand" "r"))))
   (set (reg:CC CSKY_CC_REGNUM)
	(compare:CC
	  (plus:SI (match_dup 1) (match_dup 2))
	  (match_dup 1)))]
  "CSKY_ISA_FEATURE (E1)"
  "addc\t%0, %1, %2"
  [(set_attr "length" "2")
   (set_attr "type" "addsub")]
)

;; Subtract with borrow.
;; Note that in these insns, the sense of C bit is reversed; they subtract 1
;; if the C bit is not set, and on output the bit is set to 0 for borrow
;; and 1 for no borrow.

(define_insn "cskyv2_subc"
  [(set (match_operand:SI		     0 "register_operand" "=r,r")
	(minus:SI (match_operand:SI	     1 "register_operand" "0, r")
		  (plus:SI (match_operand:SI 2 "register_operand" "r, r")
			   (eq:SI (reg:CC CSKY_CC_REGNUM) (const_int 0)))))
   (set (reg:CC CSKY_CC_REGNUM)
	(not (compare:CC (match_dup 1) (match_dup 2))))]
  "CSKY_ISA_FEATURE (E2)"
  "subc\t%0, %1, %2"
  [(set_attr "length" "2,4")
   (set_attr "type" "addsub")]
)

(define_insn "ck801_subc"
  [(set (match_operand:SI		     0 "register_operand" "=r")
	(minus:SI (match_operand:SI	     1 "register_operand" "0")
		  (plus:SI (match_operand:SI 2 "register_operand" "r")
			   (eq:SI (reg:CC CSKY_CC_REGNUM) (const_int 0)))))
   (set (reg:CC CSKY_CC_REGNUM)
	(not (compare:CC (match_dup 1) (match_dup 2))))]
  "CSKY_ISA_FEATURE (E1)"
  "subc\t%0, %1, %2"
  [(set_attr "length" "2")
   (set_attr "type" "addsub")]
)

;; ------------------------------------------------------------------------
;; Multiplication insns
;; ------------------------------------------------------------------------

(define_expand "mulsi3"
  [(set (match_operand:SI	   0 "register_operand" "")
	(mult:SI (match_operand:SI 1 "register_operand" "")
		 (match_operand:SI 2 "register_operand" "")))]
  ""
  ""
)

(define_insn "*cskyv2_mulsi3"
  [(set (match_operand:SI	   0 "register_operand" "=r")
	(mult:SI (match_operand:SI 1 "register_operand" "%r")
		 (match_operand:SI 2 "register_operand" "r")))]
  "CSKY_ISA_FEATURE (E2)"
  "mult\t%0, %1, %2"
)

(define_insn "*ck801_mulsi3"
  [(set (match_operand:SI	   0 "register_operand" "=r")
	(mult:SI (match_operand:SI 1 "register_operand" "%0")
		 (match_operand:SI 2 "register_operand" "r")))]
  "CSKY_ISA_FEATURE (E1)"
  "mult\t%0, %1, %2"
)

(define_insn "mulhisi3"
  [(set (match_operand:SI			   0 "register_operand" "=r")
	(mult:SI (sign_extend:SI (match_operand:HI 1 "register_operand" "%r"))
		 (sign_extend:SI (match_operand:HI 2 "register_operand" "r"))))]
  "CSKY_ISA_FEATURE (2E3)"
  "mulsh\t%0, %1, %2"
)


;; ------------------------------------------------------------------------
;; Conditional add insns
;; ------------------------------------------------------------------------

(define_expand "addsicc"
  [(match_operand:SI 0 "register_operand" "")
   (match_operand    1 "ordered_comparison_operator" "")
   (match_operand:SI 2 "register_operand" "")
   (match_operand:SI 3 "csky_literal_K_Uh_operand" "")]
  "CSKY_ISA_FEATURE (E2)"
  "
  {
    bool invert = csky_emit_compare (GET_CODE (operands[1]),
				     XEXP (operands[1], 0),
				     XEXP (operands[1], 1));
    if (invert)
      emit_insn (gen_cskyv2_addcc_invert (operands[0], operands[2],
					  operands[3]));
    else
      emit_insn (gen_cskyv2_addcc (operands[0], operands[2], operands[3]));

    DONE;
  }"
)

(define_insn_and_split "cskyv2_addcc"
  [(set (match_operand:SI	     0 "register_operand"	   "=r,r,&r,&r")
	(if_then_else:SI
	  (ne (reg:CC CSKY_CC_REGNUM) (const_int 0))
	  (plus:SI (match_operand:SI 1 "register_operand"	   "0,0,r,r")
		   (match_operand:SI 2 "csky_literal_K_Uh_operand" "K,Uh,K,Uh"))
	  (match_dup 1)))]
  "CSKY_ISA_FEATURE (E2)"
  "@
   inct\t%0, %1, %2
   dect\t%0, %1, %M2
   #
   #"
  "reload_completed && !rtx_equal_p (operands[0], operands[1])"
  [(set (match_dup 0)
	(if_then_else:SI (ne (reg:CC CSKY_CC_REGNUM) (const_int 0))
			 (plus:SI (match_dup 0) (match_dup 2))))]
  {
    emit_insn (gen_movf (copy_rtx (operands[0]),
			 copy_rtx (operands[1]),
			 copy_rtx (operands[0])));
  }
  [(set_attr "length" "4,4,8,8")
   (set_attr "type" "addsub")]
)

(define_insn_and_split "cskyv2_addcc_invert"
  [(set (match_operand:SI	     0 "register_operand"	   "=r,r,r,r")
	(if_then_else:SI
	  (eq (reg:CC CSKY_CC_REGNUM) (const_int 0))
	  (plus:SI (match_operand:SI 1 "register_operand"	   "0,0,r,r")
		   (match_operand:SI 2 "csky_literal_K_Uh_operand" "K,Uh,K,Uh"))
	  (match_dup 1)))]
  "CSKY_ISA_FEATURE (E2)"
  "@
   incf\t%0, %1, %2
   decf\t%0, %1, %M2
   #
   #"
  "reload_completed && !rtx_equal_p (operands[0], operands[1])"
  [(set (match_dup 0)
	(if_then_else:SI (eq (reg:CC CSKY_CC_REGNUM) (const_int 0))
			 (plus:SI (match_dup 0) (match_dup 2))))]
  {
    emit_insn (gen_movt (copy_rtx (operands[0]),
			 copy_rtx (operands[1]),
			 copy_rtx (operands[0])));
  }
  [(set_attr "length" "4,4,8,8")
   (set_attr "type" "addsub")]
)


;; ------------------------------------------------------------------------
;; Extzv insns
;; ------------------------------------------------------------------------

(define_expand "extzvsi"
  [(set (match_operand:SI 0 "register_operand" "")
	(zero_extract:SI (match_operand:SI 1 "register_operand" "")
			 (match_operand:SI 2 "const_int_operand" "")
			 (match_operand:SI 3 "const_int_operand" "")))]
  ""
  "{
    /* ck802 has xtrb but not zext, so we'll use xtrb if we can.  */
    if (CSKY_ISA_FEATURE (E2) && !CSKY_ISA_FEATURE (2E3)
	&& (INTVAL (operands[2]) == 8)
	&& (INTVAL (operands[3]) % 8 == 0))
      {
	rtx xtrb = gen_rtx_SET (operands[0],
				gen_rtx_ZERO_EXTRACT (SImode,
						      operands[1],
						      operands[2],
						      operands[3]));
	emit (gen_rtx_PARALLEL (VOIDmode,
				gen_rtvec (2, xtrb,
				gen_hard_reg_clobber (CCmode, 33))));
	DONE;
      }
    else if (!CSKY_ISA_FEATURE (2E3))
      {
	/* Use lsri and lsli to do extzv on targets without zext.  */
	rtx lshft = GEN_INT (32 - (INTVAL (operands[2])
			     + INTVAL (operands[3])));
	rtx rshft = GEN_INT (32 - INTVAL (operands[2]));
	rtx tmp1 = gen_reg_rtx (SImode);
	rtx tmp2 = gen_reg_rtx (SImode);

	emit_insn (gen_rtx_SET (tmp1, operands[1]));
	emit_insn (gen_rtx_SET (tmp2, gen_rtx_ASHIFT (SImode, tmp1, lshft)));
	emit_insn (gen_rtx_SET (operands[0],
				gen_rtx_LSHIFTRT (SImode, tmp2, rshft)));
	DONE;
      }
    else
      {
	emit_insn (gen_cskyv2_extzv (operands[0], operands[1],
				     operands[2], operands[3]));
	DONE;
      }
}")

(define_insn "cskyv2_extzv"
  [(set (match_operand:SI		   0 "register_operand" "=r")
	(zero_extract:SI (match_operand:SI 1 "register_operand" "r")
			 (match_operand:SI 2 "csky_literal_K_operand" "K")
			 (match_operand:SI 3 "csky_literal_K_operand" "K")))]
  "CSKY_ISA_FEATURE (2E3)"
  {
    operands[2] = GEN_INT (INTVAL (operands[3]) + INTVAL (operands[2]) - 1);
    return \"zext\t%0, %1, %2, %3\";
  }
)

(define_insn "*cskyv2_xtrb0"
  [(set (match_operand:SI		   0 "register_operand" "=r,r")
	(zero_extract:SI (match_operand:SI 1 "register_operand" "0,r")
			 (const_int 8)
			 (const_int 24)))
	(clobber (reg:CC CSKY_CC_REGNUM))]
  "CSKY_ISA_FEATURE (E2)"
  "@
    lsri\t%0, %0, 24
    xtrb0\t%0, %1"
)

(define_insn "*cskyv2_xtrb1"
  [(set (match_operand:SI		   0 "register_operand" "=r")
	(zero_extract:SI (match_operand:SI 1 "register_operand" "r")
			 (const_int 8)
			 (const_int 16)))
	(clobber (reg:CC CSKY_CC_REGNUM))]
  "CSKY_ISA_FEATURE (E2)"
  "xtrb1\t%0, %1"
)

(define_insn "*cskyv2_xtrb2"
  [(set (match_operand:SI		   0 "register_operand" "=r")
	(zero_extract:SI (match_operand:SI 1 "register_operand" "r")
			 (const_int 8)
			 (const_int 8)))
	(clobber (reg:CC CSKY_CC_REGNUM))]
  "CSKY_ISA_FEATURE (E2)"
  "xtrb2\t%0, %1"
)


;; -------------------------------------------------------------------------
;; Zero extension instructions
;; -------------------------------------------------------------------------

(define_insn "zero_extendhisi2"
  [(set (match_operand:SI		  0 "register_operand" "=r")
	(zero_extend:SI (match_operand:HI 1 "register_operand" "r")))]
  ""
  "zexth\t%0, %1"
)

(define_insn "*cskyv2_zextend_ldh"
  [(set (match_operand:SI		  0 "register_operand" "=r")
	(zero_extend:SI (match_operand:HI 1 "csky_simple_mem_operand" "m")))]
  ""
  "ld.h\t%0, %1"
  [(set_attr "length" "4")
   (set_attr "type" "load")]
)

(define_insn "zero_extendqisi2"
  [(set (match_operand:SI		  0 "register_operand" "=r")
	(zero_extend:SI (match_operand:QI 1 "register_operand" "r")))]
  ""
  "zextb\t%0, %1"
)

(define_insn "*cskyv2_zextend_ldb"
  [(set (match_operand:SI		  0 "register_operand" "=r")
	(zero_extend:SI (match_operand:QI 1 "csky_simple_mem_operand" "m")))]
  ""
  "ld.b\t%0, %1"
  [(set_attr "length" "4")
   (set_attr "type" "load")]
)

(define_insn "zero_extendqihi2"
  [(set (match_operand:HI		  0 "register_operand" "=r")
	(zero_extend:HI (match_operand:QI 1 "register_operand" "r")))]
  ""
  "zextb\t%0, %1"
)

(define_insn "*cskyv2_zextend_ldbhi"
  [(set (match_operand:HI		  0 "register_operand"	 "=r")
	(zero_extend:HI (match_operand:QI 1 "csky_simple_mem_operand" "m")))]
  ""
  "ld.b\t%0, %1"
  [(set_attr "length" "4")
   (set_attr "type" "load")]
)

;; -------------------------------------------------------------------------
;; clzm2 instructions
;; -------------------------------------------------------------------------

(define_insn "clzsi2"
  [(set (match_operand:SI	  0 "register_operand" "=r")
	(clz:SI (match_operand:SI 1 "register_operand" "r")))]
  "CSKY_ISA_FEATURE (E2)"
  "ff1	%0,%1"
)

;; -------------------------------------------------------------------------
;; one_cmplm2 instructions
;; -------------------------------------------------------------------------

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

(define_insn "cskyv2_one_cmplsi2"
  [(set (match_operand:SI	  0 "register_operand" "=b,r")
	(not:SI (match_operand:SI 1 "register_operand" "0,r")))]
  "CSKY_ISA_FEATURE (E2)"
  "not %0, %1"
  [(set_attr "length" "2,4")
   (set_attr "type" "alu,alu")]
)

(define_insn "ck801_one_cmplsi2"
  [(set (match_operand:SI	  0 "register_operand" "=r")
	(not:SI (match_operand:SI 1 "register_operand" "0")))]
  "CSKY_ISA_FEATURE (E1)"
  "not %0, %1"
  [(set_attr "length" "2")
   (set_attr "type" "alu")]
)

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

;; One test shows that the following code helps to
;; reduce one 'load' and two 'mov'.
(define_expand "extendsidi2"
  [(set (match_operand:DI 0 "register_operand" "=r")
	(match_operand:SI 1 "register_operand" "r"))]
  ""
  "{
    int low, high;

    if (TARGET_BIG_ENDIAN)
      low = 4, high = 0;
    else
      low = 0, high = 4;

    emit_insn (gen_rtx_SET (gen_rtx_SUBREG (SImode, operands[0], low),
			    operands[1]));

    emit_insn (gen_rtx_SET (gen_rtx_SUBREG (SImode, operands[0], high),
			    gen_rtx_ASHIFTRT (SImode,
					      gen_rtx_SUBREG (SImode,
							      operands[0],
							      low),
					      GEN_INT (31))));
    DONE;
  }"
)

(define_insn "extendhisi2"
  [(set (match_operand:SI		  0 "register_operand" "=r")
	(sign_extend:SI (match_operand:HI 1 "register_operand" "r")))]
  ""
  "sexth  %0, %1"
)

(define_insn "*cskyv2_sextend_ldhs"
  [(set (match_operand:SI		  0 "register_operand" "=r")
	(sign_extend:SI (match_operand:HI 1 "csky_simple_mem_operand" "m")))]
  "CSKY_ISA_FEATURE (E2)"
  "ld.hs\t%0, %1"
  [(set_attr "length" "4")
   (set_attr "type" "load")]
)

;; qi -> si
(define_insn "extendqisi2"
  [(set (match_operand:SI		  0 "register_operand" "=r")
	(sign_extend:SI (match_operand:QI 1 "register_operand" "r")))]
  ""
  "sextb  %0, %1"
)

;; qi -> hi
(define_insn "extendqihi2"
  [(set (match_operand:HI		  0 "register_operand" "=r")
	(sign_extend:HI (match_operand:QI 1 "register_operand" "r")))]
  ""
  "sextb  %0, %1"
)

;; -------------------------------------------------------------------------
;; And instructions
;; -------------------------------------------------------------------------

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

(define_insn_and_split "cskyv2_andsi3"
  [(set (match_operand:SI	  0 "register_operand"		 "=b,r,r,&r")
	(and:SI (match_operand:SI 1 "register_operand"		 "%0,r,r,r")
		(match_operand:SI 2 "csky_arith_any_imm_operand" "b,r,O,i")))]
  "CSKY_ISA_FEATURE (E2)"
  "@
   and\t%0, %1, %2
   and\t%0, %1, %2
   andi\t%0, %1, %2
   #"
  "(CONST_INT_P (operands[2])
    && (operands[2] == const0_rtx
	|| !csky_arith_O_operand (operands[2], SImode)))"
  [(set (match_dup 0) (and:SI (match_dup 1) (match_dup 2)))]
  {
    if (csky_split_and (operands))
      DONE;
  }
  [(set_attr "length" "2,4,4,8")
   (set_attr "type" "alu,alu,alu,alu")]
)

(define_insn_and_split "ck801_andsi3"
  [(set (match_operand:SI	  0 "register_operand"		 "=r,&r")
	(and:SI (match_operand:SI 1 "register_operand"		 "%0,r")
		(match_operand:SI 2 "csky_arith_any_imm_operand" "r,i")))]
  "CSKY_ISA_FEATURE (E1)"
  "@
   and\t%0, %1, %2
   #"
  "CONST_INT_P (operands[2])"
  [(set (match_dup 0) (and:SI (match_dup 1) (match_dup 2)))]
  {
    if (csky_split_and (operands))
      DONE;
  }
  [(set_attr "length" "2,4")
   (set_attr "type" "alu,alu")]
)

;; Note that the operands for the andnsi3 patterns are reversed compared
;; to the actual machine insn: operand 1 is the inverted operand.

(define_insn "cskyv2_andnsi3"
  [(use (and:SI (not:SI (match_operand:SI 1 "csky_arith_O_operand" "b,r,O"))
	(match_operand:SI		  2 "register_operand"	   "0,r,r")))
   (set (match_operand:SI		  0 "register_operand"	   "=b,r,r")
	(and:SI (not:SI (match_dup 1))
		(match_dup 2)))]
  "CSKY_ISA_FEATURE (E2)"
  "@
    andn\t%0, %2, %1
    andn\t%0, %2, %1
    andni\t%0, %2, %1"
  [(set_attr "length" "2,4,4")
   (set_attr "type" "alu,alu,alu")]
)

(define_insn "ck801_andnsi3"
  [(use (and:SI (not:SI (match_operand:SI 1 "register_operand" "r"))
		(match_operand:SI	  2 "register_operand" "0")))
   (set (match_operand:SI		  0 "register_operand" "=r")
	(and:SI (not:SI (match_dup 1))
		(match_dup 2)))]
 "CSKY_ISA_FEATURE (E1)"
 "andn\t%0, %2, %1"
)

(define_expand "anddi3"
  [(set (match_operand:DI 0 "register_operand" "")
	(and:DI (match_operand:DI 1 "register_operand" "")
		(match_operand:DI 2 "csky_arith_any_imm_operand" "")))]
  ""
  "
  {
    if (CONST_INT_P (operands[2]))
      {
	HOST_WIDE_INT ival = INTVAL (operands[2]);
	if (ival == (HOST_WIDE_INT) 0xffffffff)
	  {
	    emit_move_insn (gen_lowpart (SImode, operands[0]),
			    gen_lowpart (SImode, operands[1]));
	    emit_move_insn (gen_highpart (SImode, operands[0]), const0_rtx);
	    DONE;
	  }
	else if (ival == (HOST_WIDE_INT) ((unsigned HOST_WIDE_INT) -1 << 32))
	  {
	    emit_move_insn (gen_lowpart (SImode, operands[0]), const0_rtx);
	    emit_move_insn (gen_highpart (SImode, operands[0]),
			    gen_highpart (SImode, operands[1]));
	    DONE;
	  }
	else
	   FAIL;
      }
  }")



(define_insn_and_split "*cskyv2_anddi3"
  [(set (match_operand:DI	  0 "register_operand" "=&b,&r")
	(and:DI (match_operand:DI 1 "register_operand" "%0,r")
		(match_operand:DI 2 "register_operand" "b,r")))]
  "CSKY_ISA_FEATURE (E2)"
  "#"
  "reload_completed"
  [(const_int 0)]
  {
    int hi = TARGET_BIG_ENDIAN ? 0 : UNITS_PER_WORD;
    int lo = TARGET_BIG_ENDIAN ? UNITS_PER_WORD : 0;
    rtx l0 = simplify_gen_subreg (SImode, operands[0], DImode, lo);
    rtx h0 = simplify_gen_subreg (SImode, operands[0], DImode, hi);
    rtx l1 = simplify_gen_subreg (SImode, operands[1], DImode, lo);
    rtx h1 = simplify_gen_subreg (SImode, operands[1], DImode, hi);
    rtx l2 = simplify_gen_subreg (SImode, operands[2], DImode, lo);
    rtx h2 = simplify_gen_subreg (SImode, operands[2], DImode, hi);

    emit_insn (gen_cskyv2_andsi3 (l0, l1, l2));
    emit_insn (gen_cskyv2_andsi3 (h0, h1, h2));
    DONE;
  }
  [(set_attr "length" "4,8")]
)

(define_insn_and_split "*ck801_anddi3"
 [(set (match_operand:DI	 0 "register_operand" "=&r")
       (and:DI (match_operand:DI 1 "register_operand" "%0")
	       (match_operand:DI 2 "register_operand" "r")))]
  "CSKY_ISA_FEATURE (E1)"
  "#"
  "reload_completed"
  [(const_int 0)]
  {
    int hi = TARGET_BIG_ENDIAN ? 0 : UNITS_PER_WORD;
    int lo = TARGET_BIG_ENDIAN ? UNITS_PER_WORD : 0;
    rtx l0 = simplify_gen_subreg (SImode, operands[0], DImode, lo);
    rtx h0 = simplify_gen_subreg (SImode, operands[0], DImode, hi);
    rtx l1 = simplify_gen_subreg (SImode, operands[1], DImode, lo);
    rtx h1 = simplify_gen_subreg (SImode, operands[1], DImode, hi);
    rtx l2 = simplify_gen_subreg (SImode, operands[2], DImode, lo);
    rtx h2 = simplify_gen_subreg (SImode, operands[2], DImode, hi);

    emit_insn (gen_ck801_andsi3 (l0, l1, l2));
    emit_insn (gen_ck801_andsi3 (h0, h1, h2));
    DONE;
  }
  [(set_attr "length" "4")]
)


;; -------------------------------------------------------------------------
;; Ior instructions
;; -------------------------------------------------------------------------

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

(define_insn_and_split "cskyv2_iorsi3"
  [(set (match_operand:SI	  0 "register_operand"		 "=b,r,r,&r")
	(ior:SI (match_operand:SI 1 "register_operand"		 "%0,r,r,r")
		(match_operand:SI 2 "csky_arith_any_imm_operand" "b, r,I,i")))]
  "CSKY_ISA_FEATURE (E2)"
  "@
  or\t%0, %1, %2
  or\t%0, %1, %2
  ori\t%0, %1, %2
  #"
  "(CONST_INT_P (operands[2])
    && (operands[2] == const0_rtx
	|| !csky_literal_I_operand (operands[2], SImode)))"
  [(set (match_dup 0) (ior:SI (match_dup 1) (match_dup 2)))]
  {
    if (csky_split_ior (operands))
      DONE;
  }
  [(set_attr "length" "2,4,4,8")
   (set_attr "type" "alu,alu,alu,alu")]
)

(define_insn_and_split "ck801_iorsi3"
  [(set (match_operand:SI	  0 "register_operand"		 "=r,&r")
	(ior:SI (match_operand:SI 1 "register_operand"		 "%0,r")
		(match_operand:SI 2 "csky_arith_any_imm_operand" "r,i")))]
  "CSKY_ISA_FEATURE (E1)"
  "@
  or\t%0, %1, %2
  #"
  "CONST_INT_P (operands[2])"
  [(set (match_dup 0) (ior:SI (match_dup 1) (match_dup 2)))]
  {
    if (csky_split_ior (operands))
      DONE;
  }
  [(set_attr "length" "2,4")
   (set_attr "type" "alu,alu")]
)

(define_expand "iordi3"
  [(set (match_operand:DI	  0 "register_operand" "")
	(ior:DI (match_operand:DI 1 "register_operand" "")
		(match_operand:DI 2 "register_operand" "")))]
  ""
  ""
)

(define_insn_and_split "*cskyv2_iordi3"
  [(set (match_operand:DI	  0 "register_operand" "=&b,&r")
	(ior:DI (match_operand:DI 1 "register_operand" "%0, r")
		(match_operand:DI 2 "register_operand" "b,  r")))]
  "CSKY_ISA_FEATURE (E2)"
  "#"
  "reload_completed"
  [(const_int 0)]
  {
    int hi = TARGET_BIG_ENDIAN ? 0 : UNITS_PER_WORD;
    int lo = TARGET_BIG_ENDIAN ? UNITS_PER_WORD : 0;
    rtx l0 = simplify_gen_subreg (SImode, operands[0], DImode, lo);
    rtx h0 = simplify_gen_subreg (SImode, operands[0], DImode, hi);
    rtx l1 = simplify_gen_subreg (SImode, operands[1], DImode, lo);
    rtx h1 = simplify_gen_subreg (SImode, operands[1], DImode, hi);
    rtx l2 = simplify_gen_subreg (SImode, operands[2], DImode, lo);
    rtx h2 = simplify_gen_subreg (SImode, operands[2], DImode, hi);

    emit_insn (gen_cskyv2_iorsi3 (l0, l1, l2));
    emit_insn (gen_cskyv2_iorsi3 (h0, h1, h2));
    DONE;
  }
  [(set_attr "length" "4,8")]
)

(define_insn_and_split "*ck801_iordi3"
  [(set (match_operand:DI	  0 "register_operand" "=&r")
	(ior:DI (match_operand:DI 1 "register_operand" "%0")
		(match_operand:DI 2 "register_operand" "r")))]
  "CSKY_ISA_FEATURE (E1)"
  "#"
  "reload_completed"
  [(const_int 0)]
  {
    int hi = TARGET_BIG_ENDIAN ? 0 : UNITS_PER_WORD;
    int lo = TARGET_BIG_ENDIAN ? UNITS_PER_WORD : 0;
    rtx l0 = simplify_gen_subreg (SImode, operands[0], DImode, lo);
    rtx h0 = simplify_gen_subreg (SImode, operands[0], DImode, hi);
    rtx l1 = simplify_gen_subreg (SImode, operands[1], DImode, lo);
    rtx h1 = simplify_gen_subreg (SImode, operands[1], DImode, hi);
    rtx l2 = simplify_gen_subreg (SImode, operands[2], DImode, lo);
    rtx h2 = simplify_gen_subreg (SImode, operands[2], DImode, hi);

    emit_insn (gen_ck801_iorsi3 (l0, l1, l2));
    emit_insn (gen_ck801_iorsi3 (h0, h1, h2));
    DONE;
  }
  [(set_attr "length" "4")]
)


;; -------------------------------------------------------------------------
;; Xor instructions
;; -------------------------------------------------------------------------

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

(define_insn_and_split "cskyv2_xorsi3"
  [(set (match_operand:SI	  0 "register_operand"		 "=b,r,r,&r")
	(xor:SI (match_operand:SI 1 "register_operand"		 "%0,r,r,r")
		(match_operand:SI 2 "csky_arith_any_imm_operand" "b, r,O,i")))]
  "CSKY_ISA_FEATURE (E2)"
  "@
  xor\t%0, %1, %2
  xor\t%0, %1, %2
  xori\t%0, %1, %2
  #"
  "(CONST_INT_P (operands[2])
    && (operands[2] == const0_rtx
	|| !csky_arith_O_operand (operands[2], SImode)))"
  [(set (match_dup 0) (xor:SI (match_dup 1) (match_dup 2)))]
  {
    if (csky_split_xor (operands))
      DONE;
  }
  [(set_attr "length" "2,4,4,8")
   (set_attr "type" "alu,alu,alu,alu")]
)

(define_insn_and_split "ck801_xorsi3"
  [(set (match_operand:SI	  0 "register_operand"		 "=r,&r")
	(xor:SI (match_operand:SI 1 "register_operand"		 "%0,r")
		(match_operand:SI 2 "csky_arith_any_imm_operand" "r,i")))]
  "CSKY_ISA_FEATURE (E1)"
  "@
  xor\t%0, %1, %2
  #"
  "CONST_INT_P (operands[2])"
  [(set (match_dup 0) (xor:SI (match_dup 1) (match_dup 2)))]
  {
    if (csky_split_xor (operands))
      DONE;
  }
  [(set_attr "length" "2,4")
   (set_attr "type" "alu,alu")]
)

(define_expand "xordi3"
  [(set (match_operand:DI	  0 "register_operand" "")
	(xor:DI (match_operand:DI 1 "register_operand" "")
		(match_operand:DI 2 "register_operand" "")))]
  ""
  ""
)

(define_insn_and_split "*cskyv2_xordi3"
  [(set (match_operand:DI	  0 "register_operand" "=&b,&r")
	(xor:DI (match_operand:DI 1 "register_operand" "%0, r")
		(match_operand:DI 2 "register_operand" "b,  r")))]
  "CSKY_ISA_FEATURE (E2)"
  "#"
  "reload_completed"
  [(const_int 0)]
  {
    int hi = TARGET_BIG_ENDIAN ? 0 : UNITS_PER_WORD;
    int lo = TARGET_BIG_ENDIAN ? UNITS_PER_WORD : 0;
    rtx l0 = simplify_gen_subreg (SImode, operands[0], DImode, lo);
    rtx h0 = simplify_gen_subreg (SImode, operands[0], DImode, hi);
    rtx l1 = simplify_gen_subreg (SImode, operands[1], DImode, lo);
    rtx h1 = simplify_gen_subreg (SImode, operands[1], DImode, hi);
    rtx l2 = simplify_gen_subreg (SImode, operands[2], DImode, lo);
    rtx h2 = simplify_gen_subreg (SImode, operands[2], DImode, hi);

    emit_insn (gen_cskyv2_xorsi3 (l0, l1, l2));
    emit_insn (gen_cskyv2_xorsi3 (h0, h1, h2));
    DONE;
  }
  [(set_attr "length" "4,8")]
)

(define_insn_and_split "*ck801_xordi3"
  [(set (match_operand:DI	  0 "register_operand" "=&r")
	(xor:DI (match_operand:DI 1 "register_operand" "%0")
		(match_operand:DI 2 "register_operand" "r")))]
  "CSKY_ISA_FEATURE (E1)"
  "#"
  "reload_completed"
  [(const_int 0)]
  {
    int hi = TARGET_BIG_ENDIAN ? 0 : UNITS_PER_WORD;
    int lo = TARGET_BIG_ENDIAN ? UNITS_PER_WORD : 0;
    rtx l0 = simplify_gen_subreg (SImode, operands[0], DImode, lo);
    rtx h0 = simplify_gen_subreg (SImode, operands[0], DImode, hi);
    rtx l1 = simplify_gen_subreg (SImode, operands[1], DImode, lo);
    rtx h1 = simplify_gen_subreg (SImode, operands[1], DImode, hi);
    rtx l2 = simplify_gen_subreg (SImode, operands[2], DImode, lo);
    rtx h2 = simplify_gen_subreg (SImode, operands[2], DImode, hi);

    emit_insn (gen_ck801_xorsi3 (l0, l1, l2));
    emit_insn (gen_ck801_xorsi3 (h0, h1, h2));
    DONE;
  }
  [(set_attr "length" "4")]
)

;; -------------------------------------------------------------------------
;; Div instructions
;; -------------------------------------------------------------------------

(define_insn "divsi3"
  [(set (match_operand:SI	  0 "register_operand" "=r")
	(div:SI (match_operand:SI 1 "register_operand" "r")
		(match_operand:SI 2 "register_operand" "r")))]
  "TARGET_DIV"
  "divs\t%0, %1, %2"
)

(define_insn "udivsi3"
  [(set (match_operand:SI	   0 "register_operand" "=r")
	(udiv:SI (match_operand:SI 1 "register_operand" "r")
		 (match_operand:SI 2 "register_operand" "r")))]
  "TARGET_DIV"
  "divu\t%0, %1, %2"
)


;; -----------------------------------------------------------------
;; Multiple load and store insns
;; -----------------------------------------------------------------

(define_expand "load_multiple"
  [(match_par_dup 3 [(set (match_operand:SI 0 "" "")
			  (match_operand:SI 1 "" ""))
		     (use (match_operand:SI 2 "" ""))])]
  "TARGET_MULTIPLE_STLD"
  "{
    int regno, count, i;
    rtx base,src;

    if (GET_CODE (operands[2]) != CONST_INT
	|| INTVAL (operands[2]) < 2
	|| INTVAL (operands[2]) > CSKY_MAX_MULTIPLE_STLD
	|| GET_CODE (operands[1]) != MEM
	|| !REG_P (XEXP (operands[1], 0))
	|| XEXP (operands[1], 0) != stack_pointer_rtx
	|| GET_CODE (operands[0]) != REG
	|| (REGNO (XEXP (operands[1], 0)) > REGNO (operands[0])
	    && (REGNO (XEXP (operands[1], 0))
		< REGNO (operands[0]) + INTVAL (operands[2]))))
      FAIL;

    count = INTVAL (operands[2]);
    regno = REGNO (operands[0]);

    operands[3] = gen_rtx_PARALLEL (VOIDmode, rtvec_alloc (count));

    base = force_reg (SImode, XEXP (operands[1], 0));
    src = replace_equiv_address (operands[1], base);

    for (i = 0; i < count; i++)
      XVECEXP (operands[3], 0, i)
	= gen_rtx_SET (gen_rtx_REG (SImode, regno + i),
		       adjust_address_nv (src, SImode, i * 4));
  }"
)

(define_expand "store_multiple"
  [(match_par_dup 3 [(set (match_operand:SI 0 "")
			  (match_operand:SI 1 ""))
		     (use (match_operand:SI 2 ""))])]
  "TARGET_MULTIPLE_STLD"
  "{
    int regno, count, i;
    rtx base, dest;

    /* Support only storing a constant number of registers to memory and
       only if at least two registers. */
    if (GET_CODE (operands[2]) != CONST_INT
	|| INTVAL (operands[2]) < 2
	|| INTVAL (operands[2]) > CSKY_MAX_MULTIPLE_STLD
	|| GET_CODE (operands[0]) != MEM
	|| !REG_P (XEXP (operands[0], 0))
	|| XEXP (operands[0], 0) != stack_pointer_rtx
	|| GET_CODE (operands[1]) != REG
	|| (REGNO (XEXP (operands[0], 0)) >= REGNO (operands[1])
	    && (REGNO (XEXP (operands[0], 0))
		< REGNO (operands[1]) + INTVAL (operands[2]))))
      FAIL;

    count = INTVAL (operands[2]);
    regno = REGNO (operands[1]);

    operands[3] = gen_rtx_PARALLEL (VOIDmode, rtvec_alloc (count));

    base = force_reg (SImode, XEXP (operands[0], 0));
    dest = replace_equiv_address (operands[0], base);

    for (i = 0; i < count; i++)
      XVECEXP (operands[3], 0, i)
	= gen_rtx_SET (adjust_address_nv (dest, SImode, i * 4),
		       gen_rtx_REG (SImode, regno + i));
  }"
)


(define_insn "*csky_ldmsi12"
  [(match_parallel	    0 "csky_load_multiple_operation"
    [(set (match_operand:SI 1 "register_operand" "=r")
	  (mem:SI (match_operand:SI   2 "register_operand" "r")))
     (set (match_operand:SI 3 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 4))))
     (set (match_operand:SI 4 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 8))))
     (set (match_operand:SI 5 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 12))))
     (set (match_operand:SI 6 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 16))))
     (set (match_operand:SI 7 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 20))))
     (set (match_operand:SI 8 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 24))))
     (set (match_operand:SI 9 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 28))))
     (set (match_operand:SI 10 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 32))))
     (set (match_operand:SI 11 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 36))))
     (set (match_operand:SI 12 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 40))))
     (set (match_operand:SI 13 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 44))))
    ])]
  "TARGET_MULTIPLE_STLD && XVECLEN (operands[0], 0) == 12"
  {
    static char load_op[256] = {0};
    int count = REGNO (operands[1]) + XVECLEN (operands[0], 0) - 1;
    const char *reg_rz = reg_names[count];
    sprintf (load_op, \"ldm\t%%1 - %s, (%%2)\", reg_rz);
    return load_op;
  }
)

(define_insn "*csky_ldmsi11"
  [(match_parallel	    0 "csky_load_multiple_operation"
    [(set (match_operand:SI 1 "register_operand" "=r")
	  (mem:SI (match_operand:SI   2 "register_operand" "r")))
     (set (match_operand:SI 3 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 4))))
     (set (match_operand:SI 4 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 8))))
     (set (match_operand:SI 5 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 12))))
     (set (match_operand:SI 6 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 16))))
     (set (match_operand:SI 7 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 20))))
     (set (match_operand:SI 8 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 24))))
     (set (match_operand:SI 9 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 28))))
     (set (match_operand:SI 10 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 32))))
     (set (match_operand:SI 11 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 36))))
     (set (match_operand:SI 12 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 40))))
    ])]
  "TARGET_MULTIPLE_STLD && XVECLEN (operands[0], 0) == 11"
  {
    static char load_op[256] = {0};
    int count = REGNO (operands[1]) + XVECLEN (operands[0], 0) - 1;
    const char *reg_rz = reg_names[count];
    sprintf (load_op, \"ldm\t%%1 - %s, (%%2)\", reg_rz);
    return load_op;
  }
)

(define_insn "*csky_ldmsi10"
  [(match_parallel	    0 "csky_load_multiple_operation"
    [(set (match_operand:SI 1 "register_operand" "=r")
	  (mem:SI (match_operand:SI   2 "register_operand" "r")))
     (set (match_operand:SI 3 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 4))))
     (set (match_operand:SI 4 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 8))))
     (set (match_operand:SI 5 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 12))))
     (set (match_operand:SI 6 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 16))))
     (set (match_operand:SI 7 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 20))))
     (set (match_operand:SI 8 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 24))))
     (set (match_operand:SI 9 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 28))))
     (set (match_operand:SI 10 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 32))))
     (set (match_operand:SI 11 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 36))))
    ])]
  "TARGET_MULTIPLE_STLD && XVECLEN (operands[0], 0) == 10"
  {
    static char load_op[256] = {0};
    int count = REGNO (operands[1]) + XVECLEN (operands[0], 0) - 1;
    const char *reg_rz = reg_names[count];
    sprintf (load_op, \"ldm\t%%1 - %s, (%%2)\", reg_rz);
    return load_op;
  }
)

(define_insn "*csky_ldmsi9"
  [(match_parallel	    0 "csky_load_multiple_operation"
    [(set (match_operand:SI 1 "register_operand" "=r")
	  (mem:SI (match_operand:SI   2 "register_operand" "r")))
     (set (match_operand:SI 3 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 4))))
     (set (match_operand:SI 4 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 8))))
     (set (match_operand:SI 5 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 12))))
     (set (match_operand:SI 6 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 16))))
     (set (match_operand:SI 7 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 20))))
     (set (match_operand:SI 8 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 24))))
     (set (match_operand:SI 9 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 28))))
     (set (match_operand:SI 10 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 32))))
    ])]
  "TARGET_MULTIPLE_STLD && XVECLEN (operands[0], 0) == 9"
  {
    static char load_op[256] = {0};
    int count = REGNO (operands[1]) + XVECLEN (operands[0], 0) - 1;
    const char *reg_rz = reg_names[count];
    sprintf (load_op, \"ldm\t%%1 - %s, (%%2)\", reg_rz);
    return load_op;
  }
)

(define_insn "*csky_ldmsi8"
  [(match_parallel	    0 "csky_load_multiple_operation"
    [(set (match_operand:SI 1 "register_operand" "=r")
	  (mem:SI (match_operand:SI   2 "register_operand" "r")))
     (set (match_operand:SI 3 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 4))))
     (set (match_operand:SI 4 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 8))))
     (set (match_operand:SI 5 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 12))))
     (set (match_operand:SI 6 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 16))))
     (set (match_operand:SI 7 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 20))))
     (set (match_operand:SI 8 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 24))))
     (set (match_operand:SI 9 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 28))))
    ])]
  "TARGET_MULTIPLE_STLD && XVECLEN (operands[0], 0) == 8"
  {
    static char load_op[256] = {0};
    int count = REGNO (operands[1]) + XVECLEN (operands[0], 0) - 1;
    const char *reg_rz = reg_names[count];
    sprintf (load_op, \"ldm\t%%1 - %s, (%%2)\", reg_rz);
    return load_op;
  }
)

(define_insn "*csky_ldmsi7"
  [(match_parallel	    0 "csky_load_multiple_operation"
    [(set (match_operand:SI 1 "register_operand" "=r")
	  (mem:SI (match_operand:SI   2 "register_operand" "r")))
     (set (match_operand:SI 3 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 4))))
     (set (match_operand:SI 4 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 8))))
     (set (match_operand:SI 5 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 12))))
     (set (match_operand:SI 6 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 16))))
     (set (match_operand:SI 7 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 20))))
     (set (match_operand:SI 8 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 24))))
    ])]
  "TARGET_MULTIPLE_STLD && XVECLEN (operands[0], 0) == 7"
  {
    static char load_op[256] = {0};
    int count = REGNO (operands[1]) + XVECLEN (operands[0], 0) - 1;
    const char *reg_rz = reg_names[count];
    sprintf (load_op, \"ldm\t%%1 - %s, (%%2)\", reg_rz);
    return load_op;
  }
)

(define_insn "*csky_ldmsi6"
  [(match_parallel	    0 "csky_load_multiple_operation"
    [(set (match_operand:SI 1 "register_operand" "=r")
	  (mem:SI (match_operand:SI   2 "register_operand" "r")))
     (set (match_operand:SI 3 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 4))))
     (set (match_operand:SI 4 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 8))))
     (set (match_operand:SI 5 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 12))))
     (set (match_operand:SI 6 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 16))))
     (set (match_operand:SI 7 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 20))))
    ])]
  "TARGET_MULTIPLE_STLD && XVECLEN (operands[0], 0) == 6"
  {
    static char load_op[256] = {0};
    int count = REGNO (operands[1]) + XVECLEN (operands[0], 0) - 1;
    const char *reg_rz = reg_names[count];
    sprintf (load_op, \"ldm\t%%1 - %s, (%%2)\", reg_rz);
    return load_op;
  }
)


(define_insn "*csky_ldmsi5"
  [(match_parallel	    0 "csky_load_multiple_operation"
    [(set (match_operand:SI 1 "register_operand" "=r")
	  (mem:SI (match_operand:SI   2 "register_operand" "r")))
     (set (match_operand:SI 3 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 4))))
     (set (match_operand:SI 4 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 8))))
     (set (match_operand:SI 5 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 12))))
     (set (match_operand:SI 6 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 16))))
    ])]
  "TARGET_MULTIPLE_STLD && XVECLEN (operands[0], 0) == 5"
  {
    static char load_op[256] = {0};
    int count = REGNO (operands[1]) + XVECLEN (operands[0], 0) - 1;
    const char *reg_rz = reg_names[count];
    sprintf (load_op, \"ldm\t%%1 - %s, (%%2)\", reg_rz);
    return load_op;
  }
)


(define_insn "*csky_ldmsi4"
  [(match_parallel	    0 "csky_load_multiple_operation"
    [(set (match_operand:SI 1 "register_operand" "=r")
	  (mem:SI (match_operand:SI   2 "register_operand" "r")))
     (set (match_operand:SI 3 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 4))))
     (set (match_operand:SI 4 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 8))))
     (set (match_operand:SI 5 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 12))))
    ])]
  "TARGET_MULTIPLE_STLD && XVECLEN (operands[0], 0) == 4"
  {
    static char load_op[256] = {0};
    int count = REGNO (operands[1]) + XVECLEN (operands[0], 0) - 1;
    const char *reg_rz = reg_names[count];
    sprintf (load_op, \"ldm\t%%1 - %s, (%%2)\", reg_rz);
    return load_op;
  }
)


(define_insn "*csky_ldmsi3"
  [(match_parallel	    0 "csky_load_multiple_operation"
    [(set (match_operand:SI 1 "register_operand" "=r")
	  (mem:SI (match_operand:SI   2 "register_operand" "r")))
     (set (match_operand:SI 3 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 4))))
     (set (match_operand:SI 4 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 8))))
    ])]
  "TARGET_MULTIPLE_STLD && XVECLEN (operands[0], 0) == 3"
  {
    static char load_op[256] = {0};
    int count = REGNO (operands[1]) + XVECLEN (operands[0], 0) - 1;
    const char *reg_rz = reg_names[count];
    sprintf (load_op, \"ldm\t%%1 - %s, (%%2)\", reg_rz);
    return load_op;
  }
)


(define_insn "*csky_ldmsi2"
  [(match_parallel	    0 "csky_load_multiple_operation"
    [(set (match_operand:SI 1 "register_operand" "=r")
	  (mem:SI (match_operand:SI   2 "register_operand" "r")))
     (set (match_operand:SI 3 "register_operand" "=r")
	  (mem:SI (plus:SI (match_dup 2) (const_int 4))))
    ])]
  "TARGET_MULTIPLE_STLD && XVECLEN (operands[0], 0) == 2"
  {
    static char load_op[256] = {0};
    int count = REGNO (operands[1]) + XVECLEN (operands[0], 0) - 1;
    const char *reg_rz = reg_names[count];
    sprintf (load_op, \"ldm\t%%1 - %s, (%%2)\", reg_rz);
    return load_op;
  }
)

(define_insn "*csky_stmsi12"
  [(match_parallel	    0 "csky_store_multiple_operation"
    [(set (mem:SI (match_operand:SI   1 "register_operand" "r"))
	  (match_operand:SI 2 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 4)))
	  (match_operand:SI 3 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 8)))
	  (match_operand:SI 4 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 12)))
	  (match_operand:SI 5 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 16)))
	  (match_operand:SI 6 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 20)))
	  (match_operand:SI 7 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 24)))
	  (match_operand:SI 8 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 28)))
	  (match_operand:SI 9 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 32)))
	  (match_operand:SI 10 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 36)))
	  (match_operand:SI 11 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 40)))
	  (match_operand:SI 12 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 44)))
	  (match_operand:SI 13 "register_operand" "r"))
    ])]
  "TARGET_MULTIPLE_STLD && XVECLEN (operands[0], 0) == 12"
  {
    static char load_op[256] = {0};
    int end = REGNO (operands[2]) + XVECLEN (operands[0], 0) - 1;
    const char *reg_rz = reg_names[end];
    sprintf (load_op, \"stm\t%%2 - %s, (%%1)\", reg_rz);
    return load_op;
  }
)


(define_insn "*csky_stmsi11"
  [(match_parallel	    0 "csky_store_multiple_operation"
    [(set (mem:SI (match_operand:SI   1 "register_operand" "r"))
	  (match_operand:SI 2 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 4)))
	  (match_operand:SI 3 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 8)))
	  (match_operand:SI 4 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 12)))
	  (match_operand:SI 5 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 16)))
	  (match_operand:SI 6 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 20)))
	  (match_operand:SI 7 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 24)))
	  (match_operand:SI 8 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 28)))
	  (match_operand:SI 9 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 32)))
	  (match_operand:SI 10 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 36)))
	  (match_operand:SI 11 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 40)))
	  (match_operand:SI 12 "register_operand" "r"))
    ])]
  "TARGET_MULTIPLE_STLD && XVECLEN (operands[0], 0) == 11"
  {
    static char load_op[256] = {0};
    int end = REGNO (operands[2]) + XVECLEN (operands[0], 0) - 1;
    const char *reg_rz = reg_names[end];
    sprintf (load_op, \"stm\t%%2 - %s, (%%1)\", reg_rz);
    return load_op;
  }
)


(define_insn "*csky_stmsi10"
  [(match_parallel	    0 "csky_store_multiple_operation"
    [(set (mem:SI (match_operand:SI   1 "register_operand" "r"))
	  (match_operand:SI 2 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 4)))
	  (match_operand:SI 3 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 8)))
	  (match_operand:SI 4 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 12)))
	  (match_operand:SI 5 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 16)))
	  (match_operand:SI 6 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 20)))
	  (match_operand:SI 7 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 24)))
	  (match_operand:SI 8 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 28)))
	  (match_operand:SI 9 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 32)))
	  (match_operand:SI 10 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 36)))
	  (match_operand:SI 11 "register_operand" "r"))
    ])]
  "TARGET_MULTIPLE_STLD && XVECLEN (operands[0], 0) == 10"
  {
    static char load_op[256] = {0};
    int end = REGNO (operands[2]) + XVECLEN (operands[0], 0) - 1;
    const char *reg_rz = reg_names[end];
    sprintf (load_op, \"stm\t%%2 - %s, (%%1)\", reg_rz);
    return load_op;
  }
)


(define_insn "*csky_stmsi9"
  [(match_parallel	    0 "csky_store_multiple_operation"
    [(set (mem:SI (match_operand:SI   1 "register_operand" "r"))
	  (match_operand:SI 2 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 4)))
	  (match_operand:SI 3 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 8)))
	  (match_operand:SI 4 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 12)))
	  (match_operand:SI 5 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 16)))
	  (match_operand:SI 6 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 20)))
	  (match_operand:SI 7 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 24)))
	  (match_operand:SI 8 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 28)))
	  (match_operand:SI 9 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 32)))
	  (match_operand:SI 10 "register_operand" "r"))
    ])]
  "TARGET_MULTIPLE_STLD && XVECLEN (operands[0], 0) == 9"
  {
    static char load_op[256] = {0};
    int end = REGNO (operands[2]) + XVECLEN (operands[0], 0) - 1;
    const char *reg_rz = reg_names[end];
    sprintf (load_op, \"stm\t%%2 - %s, (%%1)\", reg_rz);
    return load_op;
  }
)


(define_insn "*csky_stmsi8"
  [(match_parallel	    0 "csky_store_multiple_operation"
    [(set (mem:SI (match_operand:SI   1 "register_operand" "r"))
	  (match_operand:SI 2 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 4)))
	  (match_operand:SI 3 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 8)))
	  (match_operand:SI 4 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 12)))
	  (match_operand:SI 5 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 16)))
	  (match_operand:SI 6 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 20)))
	  (match_operand:SI 7 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 24)))
	  (match_operand:SI 8 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 28)))
	  (match_operand:SI 9 "register_operand" "r"))
    ])]
  "TARGET_MULTIPLE_STLD && XVECLEN (operands[0], 0) == 8"
  {
    static char load_op[256] = {0};
    int end = REGNO (operands[2]) + XVECLEN (operands[0], 0) - 1;
    const char *reg_rz = reg_names[end];
    sprintf (load_op, \"stm\t%%2 - %s, (%%1)\", reg_rz);
    return load_op;
  }
)


(define_insn "*csky_stmsi7"
  [(match_parallel	    0 "csky_store_multiple_operation"
    [(set (mem:SI (match_operand:SI   1 "register_operand" "r"))
	  (match_operand:SI 2 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 4)))
	  (match_operand:SI 3 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 8)))
	  (match_operand:SI 4 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 12)))
	  (match_operand:SI 5 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 16)))
	  (match_operand:SI 6 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 20)))
	  (match_operand:SI 7 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 24)))
	  (match_operand:SI 8 "register_operand" "r"))
    ])]
  "TARGET_MULTIPLE_STLD && XVECLEN (operands[0], 0) == 7"
  {
    static char load_op[256] = {0};
    int end = REGNO (operands[2]) + XVECLEN (operands[0], 0) - 1;
    const char *reg_rz = reg_names[end];
    sprintf (load_op, \"stm\t%%2 - %s, (%%1)\", reg_rz);
    return load_op;
  }
)


(define_insn "*csky_stmsi6"
  [(match_parallel	    0 "csky_store_multiple_operation"
    [(set (mem:SI (match_operand:SI   1 "register_operand" "r"))
	  (match_operand:SI 2 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 4)))
	  (match_operand:SI 3 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 8)))
	  (match_operand:SI 4 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 12)))
	  (match_operand:SI 5 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 16)))
	  (match_operand:SI 6 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 20)))
	  (match_operand:SI 7 "register_operand" "r"))
    ])]
  "TARGET_MULTIPLE_STLD && XVECLEN (operands[0], 0) == 6"
  {
    static char load_op[256] = {0};
    int end = REGNO (operands[2]) + XVECLEN (operands[0], 0) - 1;
    const char *reg_rz = reg_names[end];
    sprintf (load_op, \"stm\t%%2 - %s, (%%1)\", reg_rz);
    return load_op;
  }
)

(define_insn "*csky_stmsi5"
  [(match_parallel	    0 "csky_store_multiple_operation"
    [(set (mem:SI (match_operand:SI   1 "register_operand" "r"))
	  (match_operand:SI 2 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 4)))
	  (match_operand:SI 3 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 8)))
	  (match_operand:SI 4 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 12)))
	  (match_operand:SI 5 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 16)))
	  (match_operand:SI 6 "register_operand" "r"))
    ])]
  "TARGET_MULTIPLE_STLD && XVECLEN (operands[0], 0) == 5"
  {
    static char load_op[256] = {0};
    int end = REGNO (operands[2]) + XVECLEN (operands[0], 0) - 1;
    const char *reg_rz = reg_names[end];
    sprintf (load_op, \"stm\t%%2 - %s, (%%1)\", reg_rz);
    return load_op;
  }
)


(define_insn "*csky_stmsi4"
  [(match_parallel	    0 "csky_store_multiple_operation"
    [(set (mem:SI (match_operand:SI   1 "register_operand" "r"))
	  (match_operand:SI 2 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 4)))
	  (match_operand:SI 3 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 8)))
	  (match_operand:SI 4 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 12)))
	  (match_operand:SI 5 "register_operand" "r"))
    ])]
  "TARGET_MULTIPLE_STLD && XVECLEN (operands[0], 0) == 4"
  {
    static char load_op[256] = {0};
    int end = REGNO (operands[2]) + XVECLEN (operands[0], 0) - 1;
    const char *reg_rz = reg_names[end];
    sprintf (load_op, \"stm\t%%2 - %s, (%%1)\", reg_rz);
    return load_op;
  }
)


(define_insn "*csky_stmsi3"
  [(match_parallel	    0 "csky_store_multiple_operation"
    [(set (mem:SI (match_operand:SI   1 "register_operand" "r"))
	  (match_operand:SI 2 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 4)))
	  (match_operand:SI 3 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 8)))
	  (match_operand:SI 4 "register_operand" "r"))
    ])]
  "TARGET_MULTIPLE_STLD && XVECLEN (operands[0], 0) == 3"
  {
    static char load_op[256] = {0};
    int end = REGNO (operands[2]) + XVECLEN (operands[0], 0) - 1;
    const char *reg_rz = reg_names[end];
    sprintf (load_op, \"stm\t%%2 - %s, (%%1)\", reg_rz);
    return load_op;
  }
)


(define_insn "*csky_stmsi2"
  [(match_parallel	    0 "csky_store_multiple_operation"
    [(set (mem:SI (match_operand:SI   1 "register_operand" "r"))
	  (match_operand:SI 2 "register_operand" "r"))
     (set (mem:SI (plus:SI (match_dup 1) (const_int 4)))
	  (match_operand:SI 3 "register_operand" "r"))
    ])]
  "TARGET_MULTIPLE_STLD && XVECLEN (operands[0], 0) == 2"
  {
    static char load_op[256] = {0};
    int end = REGNO (operands[2]) + XVECLEN (operands[0], 0) - 1;
    const char *reg_rz = reg_names[end];
    sprintf (load_op, \"stm\t%%2 - %s, (%%1)\", reg_rz);
    return load_op;
  }
)


;; ------------------------------------------------------------------------
;; Jump and linkage insns
;; ------------------------------------------------------------------------

(define_expand "tablejump"
  [(parallel [(set (pc) (match_operand:SI 0 "register_operand" "r"))
	      (use (label_ref (match_operand 1 "" "")))])]
  ""
  "
  if (flag_pic)
    operands[0] = expand_simple_binop (Pmode, PLUS, operands[0],
				       pic_offset_table_rtx, NULL_RTX,
				       1, OPTAB_DIRECT);
  "
)

(define_insn "*tablejump"
  [(set (pc) (match_operand:SI	  0 "register_operand" "r"))
   (use (label_ref (match_operand 1 ""		       "")))]
  ""
  "jmp	%0"
  [(set_attr "type" "branch_jmp")]
)

(define_expand "jump"
  [(set (pc) (label_ref (match_operand 0 "" "")))]
  ""
  ""
)

(define_insn "*csky_jump"
  [(set (pc) (label_ref (match_operand 0 "" "")))]
  "CSKY_ISA_FEATURE (E2)"
  "jbr	%l0"
  [(set_attr "type" "branch")]
)

;; The length of bsr is not really 5; it's used to distinguish from br32.
;; Since the length attribute is treated specially it doesn't seem possible
;; to compute the far_jump attribute directly and use that.

(define_insn "*ck801_ck802_jump"
  [(set (pc) (label_ref (match_operand 0 "" "")))]
  "CSKY_ISA_FEATURE (E1) || CSKY_ISA_FEATURE (E2)"
  "*{
    if (get_attr_length (insn) != 5)
      return \"jbr\\t%l0\";
    else
      return \"bsr\\t%l0\\t//far jump\";
  }"
  [(set_attr "type" "branch")
   (set (attr "far_jump")
	(if_then_else
	  (eq_attr "length" "5")
	  (const_string "yes")
	  (const_string "no")))
   (set (attr "length")
	(if_then_else
	  (and (ge (minus (match_dup 0) (pc)) (const_int -1024))
	       (le (minus (match_dup 0) (pc)) (const_int 1022)))
	  (const_int 2)
	  (if_then_else
	    (and (ge (minus (match_dup 0) (pc)) (const_int -65536))
		 (le (minus (match_dup 0) (pc)) (const_int 65534)))
	    (const_int 4)
	    (const_int 5))))]
)

(define_insn "indirect_jump"
  [(set (pc) (match_operand:SI 0 "register_operand" "b,r"))]
  ""
  "@
    jmp\t%0
    jmp\t%0"
  [(set_attr "length" "2,4")
   (set_attr "type" "branch_jmp")]
)


;; ------------------------------------------------------------------------
;; Conditional jump insns
;; ------------------------------------------------------------------------

(define_expand "cbranchsi4"
  [(set (pc)
	(if_then_else (match_operator 0 "ordered_comparison_operator"
			[(match_operand:SI 1 "csky_compare_operand")
			 (match_operand:SI 2 "nonmemory_operand")])
		      (label_ref (match_operand 3 ""))
		      (pc)))]
  ""
  "{
    enum rtx_code code = GET_CODE (operands[0]);

     if (CSKY_ISA_FEATURE (2E3)
	 && (code == LE || code == LT || code == GT
	     || code == GE || code == EQ || code == NE)
	 && operands[2] == const0_rtx)
       {
	 /* These cases match the jbez, jbnez, etc insns below.
	    TODO: Handling this in the expander is suboptimal since it
	    fails to detect cases where the constant 0 would fall out
	    from subsequent forward propagation or loop optimizers; maybe
	    it would be better to have a splitter here, but when to split?  */
       }
     else
       {
	 bool invert = csky_emit_compare (code, operands[1], operands[2]);

	 if (invert)
	   emit_jump_insn (gen_csky_jbf (operands[3]));
	 else
	   emit_jump_insn (gen_csky_jbt (operands[3]));
	 DONE;
     }
  }"
)

(define_insn "csky_jbt"
  [(set (pc)
	(if_then_else (ne (reg:CC CSKY_CC_REGNUM) (const_int 0))
		      (label_ref (match_operand 0 "" ""))
		      (pc)))]
  "CSKY_ISA_FEATURE (2E3)"
  "jbt\t%l0"
  [(set_attr "type" "cbranch")]
)

(define_insn "csky_jbf"
  [(set (pc)
	(if_then_else (eq (reg:CC CSKY_CC_REGNUM) (const_int 0))
		      (label_ref (match_operand 0 "" ""))
		      (pc)))]
  "CSKY_ISA_FEATURE (2E3)"
  "jbf\t%l0"
  [(set_attr "type" "cbranch")]
)


;;; CK802 has 32-bit jbt/jbf instructions, but no insn other
;;; than bsr for far jumps.

(define_insn "ck802_jbt"
  [(set (pc) (if_then_else (ne (reg:CC CSKY_CC_REGNUM) (const_int 0))
			   (label_ref (match_operand 0 "" ""))
			   (pc)))]
  "CSKY_ISA_FEATURE (E2)"
  {
    if (get_attr_length (insn) == 6)
      return \"jbf\\t.LCB%=\;bsr\\t%l0\\t//far jump\\n.LCB%=:\";
    else
      return \"jbt\\t%l0\";
   }
  [(set_attr "type" "cbranch")
   (set (attr "far_jump")
	(if_then_else
	  (eq_attr "length" "6")
	  (const_string "yes")
	  (const_string "no")))
   (set (attr "length")
	(if_then_else
	  (and (ge (minus (match_dup 0) (pc)) (const_int -1024))
	       (le (minus (match_dup 0) (pc)) (const_int 1022)))
	  (const_int 2)
	  (if_then_else
	    (and (ge (minus (match_dup 0) (pc)) (const_int -65534))
		 (le (minus (match_dup 0) (pc)) (const_int 65534)))
	    (const_int 4)
	    (const_int 6))))]
)

(define_insn "ck802_jbf"
  [(set (pc) (if_then_else (eq (reg:CC CSKY_CC_REGNUM) (const_int 0))
			   (label_ref (match_operand 0 "" ""))
			   (pc)))]
  "CSKY_ISA_FEATURE (E2)"
  {
    if (get_attr_length (insn) == 6)
      return \"jbt\\t.LCB%=\;bsr\\t%l0\\t//far jump\\n.LCB%=:\";
    else
      return \"jbf\\t%l0\";
   }
  [(set_attr "type" "cbranch")
   (set (attr "far_jump")
	(if_then_else
	  (eq_attr "length" "6")
	  (const_string "yes")
	  (const_string "no")))
   (set (attr "length")
	(if_then_else
	  (and (ge (minus (match_dup 0) (pc)) (const_int -1024))
	       (le (minus (match_dup 0) (pc)) (const_int 1022)))
	  (const_int 2)
	  (if_then_else
	    (and (ge (minus (match_dup 0) (pc)) (const_int -65534))
		 (le (minus (match_dup 0) (pc)) (const_int 65534)))
	    (const_int 4)
	    (const_int 6))))]
)

;; The length of the bsr case is not really 7; it's used to distinguish
;; from br32.
;; Note that we have to adjust the backward range of the jbr case to
;; account for the jbf in front of it.
(define_insn "ck801_jbt"
  [(set (pc) (if_then_else (ne (reg:CC CSKY_CC_REGNUM) (const_int 0))
			   (label_ref (match_operand 0 "" ""))
			   (pc)))]
  "CSKY_ISA_FEATURE (E1)"
  {
    if (get_attr_length (insn) == 6)
      return \"jbf\\t.LCB%=\;jbr\\t%l0\\n.LCB%=:\";
    else if (get_attr_length (insn) == 7)
      return \"jbf\\t.LCB%=\;bsr\\t%l0\\t//far jump\\n.LCB%=:\";
    else
      return \"jbt\\t%l0\";
   }
  [(set_attr "type" "cbranch")
   (set (attr "far_jump")
	(if_then_else
	  (eq_attr "length" "7")
	  (const_string "yes")
	  (const_string "no")))
   (set (attr "length")
	(if_then_else
	  (and (ge (minus (match_dup 0) (pc)) (const_int -1024))
	       (le (minus (match_dup 0) (pc)) (const_int 1022)))
	  (const_int 2)
	  (if_then_else
	    (and (ge (minus (match_dup 0) (pc)) (const_int -65534))
		 (le (minus (match_dup 0) (pc)) (const_int 65534)))
	    (const_int 6)
	    (const_int 7))))]
)

(define_insn "ck801_jbf"
  [(set (pc)
	(if_then_else (eq (reg:CC CSKY_CC_REGNUM) (const_int 0))
		      (label_ref (match_operand 0 "" ""))
		      (pc)))]
  "CSKY_ISA_FEATURE (E1)"
  {
    if (get_attr_length (insn) == 6)
      return \"jbt\\t.LCB%=\;jbr\\t%l0\\n.LCB%=:\";
    else if (get_attr_length (insn) == 7)
      return \"jbt\\t.LCB%=\;bsr\\t%l0\\t//far jump\\n.LCB%=:\";
    else
      return \"jbf\\t%l0\";
  }
  [(set_attr "type" "cbranch")
   (set (attr "far_jump")
	(if_then_else
	  (eq_attr "length" "7")
	  (const_string "yes")
	  (const_string "no")))
   (set (attr "length")
	(if_then_else
	  (and (ge (minus (match_dup 0) (pc)) (const_int -1024))
	       (le (minus (match_dup 0) (pc)) (const_int 1022)))
	  (const_int 2)
	  (if_then_else
	    (and (ge (minus (match_dup 0) (pc)) (const_int -65534))
		 (le (minus (match_dup 0) (pc)) (const_int 65534)))
	    (const_int 6)
	    (const_int 7))))]
)

(define_code_iterator zero_cond [lt le gt ge eq ne])

(define_code_attr inst [(lt "jblz") (le "jblsz") (gt "jbhz") (ge "jbhsz") (eq "jbez") (ne "jbnez")])

(define_insn "*<inst>"
  [(set (pc)
	(if_then_else (zero_cond (match_operand:SI 0 "register_operand" "r")
				 (const_int 0))
		      (label_ref (match_operand 1 "" ""))
		      (pc)))]
  "CSKY_ISA_FEATURE (2E3)"
  "<inst>\t%0, %l1"
  [(set_attr "type" "cbranch")]
)

;; ------------------------------------------------------------------------
;; return insns
;; ------------------------------------------------------------------------

(define_insn "simple_return"
  [(simple_return)]
  "reload_completed"
  "*
    return csky_output_return_instruction ();
  "
)

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

;; We can't expand this before we know where the link register is stored.
(define_insn_and_split "csky_eh_return"
  [(unspec_volatile [(match_operand:SI 0 "register_operand" "r")]
		    VUNSPEC_EH_RETURN)
   (clobber (match_scratch:SI 1 "=&r"))]
  ""
  "#"
  "reload_completed"
  [(const_int 0)]
  "{
    csky_set_eh_return_address (operands[0], operands[1]);
    DONE;
  }"
)

;; -------------------------------------------------------------------------
;; SImode signed integer comparisons
;; -------------------------------------------------------------------------

(define_insn "*cmpnesi_r"
  [(set (reg:CC CSKY_CC_REGNUM)
	(ne:CC (match_operand:SI 0 "register_operand" "b,r")
	       (match_operand:SI 1 "register_operand" "b,r")))]
  ""
  "@
    cmpne\t%0, %1
    cmpne\t%0, %1"
  [(set_attr "length" "2,4")
   (set_attr "type" "cmp")]
)

;; cmpnei range is 0-31 for Smart mode.
(define_insn "smart_cmpnesi_i"
  [(set (reg:CC CSKY_CC_REGNUM)
	(ne:CC (match_operand:SI 0 "register_operand"	    "a")
	       (match_operand:SI 1 "csky_literal_K_operand" "K")))]
  "TARGET_MINI_REGISTERS"
  "cmpnei\t%0, %1"
  [(set_attr "type" "cmp")]
)

;; cmpnei range is 0 - 65536 for Fast mode.
(define_insn "fast_cmpnesi_i"
  [(set (reg:CC CSKY_CC_REGNUM)
	(ne:CC (match_operand:SI 0 "register_operand"	    "r")
	       (match_operand:SI 1 "csky_literal_I_operand" "I")))]
  "!TARGET_MINI_REGISTERS && CSKY_ISA_FEATURE (E2)"
  "cmpnei\t%0, %1"
  [(set_attr "type" "cmp")]
)

(define_insn "*cmpgtsi"
  [(set (reg:CC CSKY_CC_REGNUM)
	(gt:CC (match_operand:SI 0 "register_operand" "b,r")
	       (match_operand:SI 1 "register_operand" "b,r")))]
  ""
  "cmplt\t%1, %0"
  [(set_attr "length" "2,4")
   (set_attr "type" "cmp")]
)

(define_insn "cmpltsi_r"
  [(set (reg:CC CSKY_CC_REGNUM)
	(lt:CC (match_operand:SI 0 "register_operand" "b,r")
	       (match_operand:SI 1 "register_operand" "b,r")))]
  ""
  "cmplt\t%0, %1"
  [(set_attr "length" "2,4")
   (set_attr "type" "cmp")]
)

;; cmplti range is 1-32 for Smart mode.
(define_insn "*smart_cmpltsi_i"
  [(set (reg:CC CSKY_CC_REGNUM)
	(lt:CC (match_operand:SI 0 "register_operand"	    "a")
	       (match_operand:SI 1 "csky_literal_J_operand" "J")))]
  "TARGET_MINI_REGISTERS"
  "cmplti\t%0, %1"
  [(set_attr "length" "2")
   (set_attr "type" "cmp")]
)


;; cmplti range is 1-65536 for Fast mode.
(define_insn "*fast_cmpltsi_i"
  [(set (reg:CC CSKY_CC_REGNUM)
	(lt:CC (match_operand:SI 0 "register_operand"	     "a,r")
	       (match_operand:SI 1 "csky_literal_Uk_operand" "J,Uk")))]
  "!TARGET_MINI_REGISTERS && CSKY_ISA_FEATURE (E2)"
  "cmplti\t%0, %1"
  [(set_attr "length" "2,4")
   (set_attr "type" "cmp")]
)

; Covers cmplti x,0.
(define_insn "*cskyv2_cmpltsi_0"
  [(set (reg:CC CSKY_CC_REGNUM)
	(lt:CC (match_operand:SI 0 "register_operand" "a,r")
	       (const_int 0)))]
  "CSKY_ISA_FEATURE (E2)"
  "btsti\t%0, 31"
  [(set_attr "length" "2,4")
   (set_attr "type" "cmp")]
)

(define_insn "*ck801_cmpltsi_0"
  [(set (reg:CC CSKY_CC_REGNUM)
	(lt:CC (match_operand:SI 0 "register_operand" "a")
	       (const_int 0)))]
  "CSKY_ISA_FEATURE (E1)"
  "btsti\t%0, 31"
  [(set_attr "type" "cmp")]
)

;; Decrement and test instructions.
;; In theory decne could be used in conjunction with jbt to implement
;; doloop_end, but that seems to encourage the loop optimizer to introduce
;; an additional induction variable and doesn't actually result in tighter
;; loop code for that reason.

(define_insn "*cskyv2_declt"
  [(set (match_operand:SI 0 "register_operand" "=r")
	(plus:SI (match_operand:SI 1 "register_operand" "r")
		 (match_operand:SI 2 "const_int_operand" "Uh")))
   (set (reg:CC CSKY_CC_REGNUM)
	(lt:CC (plus:SI (match_dup 1) (match_dup 2))
	       (const_int 0)))]
  "CSKY_ISA_FEATURE (2E3)"
  "declt\t%0, %1, %M2"
)

(define_insn "*cskyv2_decgt"
  [(set (match_operand:SI 0 "register_operand" "=r")
	(plus:SI (match_operand:SI 1 "register_operand" "r")
		 (match_operand:SI 2 "const_int_operand" "Uh")))
   (set (reg:CC CSKY_CC_REGNUM)
	(gt:CC (plus:SI (match_dup 1) (match_dup 2))
	       (const_int 0)))]
  "CSKY_ISA_FEATURE (2E3)"
  "decgt\t%0, %1, %M2"
)

(define_insn "*cskyv2_decne"
  [(set (match_operand:SI 0 "register_operand" "=r")
	(plus:SI (match_operand:SI 1 "register_operand" "r")
		 (match_operand:SI 2 "const_int_operand" "Uh")))
   (set (reg:CC CSKY_CC_REGNUM)
	(ne:CC (plus:SI (match_dup 1) (match_dup 2))
	       (const_int 0)))]
  "CSKY_ISA_FEATURE (2E3)"
  "decne\t%0, %1, %M2"
)

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

(define_insn "cmpgeusi_r"
  [(set (reg:CC CSKY_CC_REGNUM)
	(geu:CC (match_operand:SI 0 "register_operand" "b,r")
		(match_operand:SI 1 "register_operand" "b,r")))]
  ""
  "cmphs\t%0, %1"
  [(set_attr "length" "2,4")
   (set_attr "type" "cmp")]
)

(define_insn "*smart_cmpgeusi_i"
  [(set (reg:CC CSKY_CC_REGNUM)
	(geu:CC (match_operand:SI 0 "register_operand"	     "a")
		(match_operand:SI 1 "csky_literal_J_operand" "J")))]
  "TARGET_MINI_REGISTERS"
  "cmphsi\t%0, %1"
  [(set_attr "length" "2")
   (set_attr "type" "cmp")]
)

(define_insn "*fast_cmpgeusi_i"
  [(set (reg:CC CSKY_CC_REGNUM)
	(geu:CC (match_operand:SI 0 "register_operand"	      "a,r")
		(match_operand:SI 1 "csky_literal_Uk_operand" "J,Uk")))]
  "!TARGET_MINI_REGISTERS && CSKY_ISA_FEATURE (E2)"
  "cmphsi\t%0, %1"
  [(set_attr "length" "2,4")
   (set_attr "type" "cmp")]
)

(define_insn "*cmpleusi"
  [(set (reg:CC CSKY_CC_REGNUM)
	(leu:CC (match_operand:SI 0 "register_operand" "b,r")
		(match_operand:SI 1 "register_operand" "b,r")))]
  ""
  "cmphs\t%1, %0"
  [(set_attr "length" "2,4")
   (set_attr "type" "cmp")]
)

;; -------------------------------------------------------------------------
;; Function call insns
;; -------------------------------------------------------------------------

(define_expand "call"
  [(parallel [(call (match_operand:SI 0 "" "") (match_operand 1 "" ""))
	      (clobber (reg:SI CSKY_LR_REGNUM))])]
  ""
  "
  {
    rtx pic_ref;
    rtx addr_ref = XEXP (operands[0], 0);

    if (flag_pic
	&& (CONSTANT_P (addr_ref)
	    || csky_symbol_mentioned_p (addr_ref)
	    || csky_label_mentioned_p (addr_ref)))
      {
	pic_ref = csky_legitimize_pic_address (addr_ref, 0, false);
	operands[0] = gen_rtx_MEM (GET_MODE (pic_ref), pic_ref);
      }

     if (GET_CODE (operands[0]) == MEM
	 && ! register_operand (XEXP (operands[0], 0), SImode)
	 && ! csky_symbolic_address_p (XEXP (operands[0], 0))
	 && ! (flag_pic
	       && csky_unspec_operand (XEXP (operands[0], 0), SImode)))
       operands[0] = gen_rtx_MEM (GET_MODE (operands[0]),
				  force_reg (Pmode, XEXP (operands[0], 0)));
  }"
)


(define_insn "*call_internal"
  [(call (mem:SI (match_operand:SI 0 "csky_call_address_operand" "b,r,S"))
	 (match_operand 1 "" ""))
   (clobber (reg:SI CSKY_LR_REGNUM))]
  ""
  "@
    jsr\t%0
    jsr\t%0
    jbsr\t%0"
  [(set_attr "length" "2,4,4")
   (set_attr "type"   "call_jsr,call_jsr,call")]
)

(define_insn "*call_internal_pic"
  [(call (mem:SI (match_operand:SI 0 "csky_unspec_operand" "X"))
	 (match_operand		   1 "" ""))
  (clobber (reg:SI CSKY_LR_REGNUM))]
  "flag_pic"
  "* return csky_output_call (operands, 0);"
  [(set_attr "length" "4")]
)

(define_expand "call_value"
  [(parallel [(set (match_operand 0 "register_operand" "")
		   (call (match_operand:SI 1 "" "") (match_operand 2 "" "")))
	      (clobber (reg:SI CSKY_LR_REGNUM))])]
  ""
  "{
    rtx pic_ref;
    rtx addr_ref = XEXP (operands[1], 0);

    if (flag_pic
	&& (CONSTANT_P (addr_ref)
	    || csky_symbol_mentioned_p (addr_ref)
	    || csky_label_mentioned_p (addr_ref)))
      {
	pic_ref = csky_legitimize_pic_address (addr_ref, 0, false);
	operands[1] = gen_rtx_MEM (GET_MODE (pic_ref), pic_ref);
      }

     if (GET_CODE (operands[1]) == MEM
	 && ! register_operand (XEXP (operands[1], 0), SImode)
	 && ! csky_symbolic_address_p (XEXP (operands[1], 0))
	 && ! (flag_pic
	       && csky_unspec_operand (XEXP (operands[1], 0), SImode)))
      operands[1] = gen_rtx_MEM (GET_MODE (operands[1]),
				 force_reg (Pmode, XEXP (operands[1], 0)));
  }")


(define_insn "*call_value_internal"
  [(set (match_operand			0 "register_operand"	      "=r,r,r")
	(call (mem:SI (match_operand:SI 1 "csky_call_address_operand" "b, r,S"))
	      (match_operand 2 "" "")))
   (clobber (reg:SI CSKY_LR_REGNUM))]
  ""
  "@
    jsr\t%1
    jsr\t%1
    jbsr\t%1"
  [(set_attr "length" "2,4,4")
   (set_attr "type"   "call_jsr,call_jsr,call")]
)

(define_insn "*call_value_internal_pic"
  [(set (match_operand			0 "register_operand"	"=r")
	(call (mem:SI (match_operand:SI 1 "csky_unspec_operand" "X"))
		      (match_operand	2 "" "")))
   (clobber (reg:SI CSKY_LR_REGNUM))]
  "flag_pic"
  "* return csky_output_call (operands, 1);"
)

(define_insn "*call_value_struct"
  [(set (match_parallel 0 ""
	  [(expr_list (match_operand 3 "register_operand" "")
		      (match_operand 4 "immediate_operand" ""))
	   (expr_list (match_operand 5 "register_operand" "")
		      (match_operand 6 "immediate_operand" ""))])
	(call (mem:SI (match_operand:SI 1 "csky_call_address_operand" "b,r,S"))
	      (match_operand 2 "" "")))
	(clobber (reg:SI CSKY_LR_REGNUM))]
  ""
  "@
    jsr\t%1
    jsr\t%1
    jbsr\t%1"
  [(set_attr "length" "2,4,4")
   (set_attr "type"   "call_jsr,call_jsr,call")]
)

(define_insn "*call_value_struct_pic"
  [(set (match_parallel 0 ""
	  [(expr_list (match_operand 3 "register_operand"  "")
		      (match_operand 4 "immediate_operand" ""))
	   (expr_list (match_operand 5 "register_operand"  "")
		      (match_operand 6 "immediate_operand" ""))])
	(call (mem:SI (match_operand:SI 1 "csky_unspec_operand" "X"))
		      (match_operand	2 "" "")))
   (clobber (reg:SI CSKY_LR_REGNUM))]
  "flag_pic"
  "* return csky_output_call (operands, 1);"
)


;; -------------------------------------------------------------
;; prologue & epilogue
;; -------------------------------------------------------------

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

(define_expand "epilogue"
  [(clobber (const_int 0))]
  ""
  "
  {
    csky_expand_epilogue ();
    DONE;
  }"
)

/* TODO: pushpop */
;; Push multiple registers to the stack.  Registers are in parallel (use ...)
;; expressions.  For simplicity, the first register is also in the unspec
;; part.
(define_insn "*push_multi"
  [(match_parallel 2 "registers_push"
    [(set (match_operand:BLK 0 "push_memory_operand" "")
	  (unspec:BLK [(match_operand:SI 1 "register_operand" "")]
	    UNSPEC_PUSHPOP_MULT))])]
  ""
  {
    int num_saves = XVECLEN (operands[2], 0);
    int i;
    char pattern[100];

    strcpy (pattern, \"push\\t%1\");

    for (i = 1; i < num_saves; i++)
      {
	strcat (pattern, \", \");
	strcat (pattern,
		reg_names[REGNO (XEXP (XVECEXP (operands[2], 0, i), 0))]);
      }

    output_asm_insn (pattern, operands);

    return \"\";
  }
  [(set (attr "length")
	(symbol_ref "csky_compute_pushpop_length (operands)"))]
)

;; Pop (as used in epilogue RTL)
;;
(define_insn "*pop_multi"
  [(match_parallel 2 "registers_pop"
    [(return)
     (set (match_operand:SI 1 "register_operand" "")
	  (unspec:SI [(match_operand:SI 0 "pop_memory_operand" "")]
	    UNSPEC_PUSHPOP_MULT))])]
  ""
  {
    int num_saves = XVECLEN (operands[2], 0);
    int i;
    char pattern[100];

    strcpy (pattern, \"pop\\t%1\");

    for (i = 2; i < num_saves; i++)
      {
	strcat (pattern, \", \");
	strcat (pattern,
	    reg_names[REGNO (XEXP (XVECEXP (operands[2], 0, i), 0))]);
      }

    output_asm_insn (pattern, operands);

    return \"\";
  }
  [(set (attr "length")
	(symbol_ref "csky_compute_pushpop_length (operands)"))]
)


;; -------------------------------------------------------------------------
;; PIC related insns
;; -------------------------------------------------------------------------

(define_insn "prologue_get_pc"
  [(set (reg:SI 28)
	(match_operand:SI 0 "" "X"))]
  "(GET_CODE (operands[0]) == UNSPEC)
   && (XINT (operands[0], 1) == UNSPEC_PIC_SYMBOL_GOTPC_GRS)"
  {
    operands[0] = XVECEXP (operands[0], 0, 0);
    output_asm_insn (\"grs\tgb, %0\", operands);
    default_internal_label (asm_out_file, \"L\",
			    CODE_LABEL_NUMBER (XEXP (operands[0], 0)));
    return \"\";
  }
)

(define_insn "*pic_got_pc"
  [(set (match_operand:SI	      0 "register_operand" "=r")
	(unspec:SI [(match_operand:SI 1 "" "")] UNSPEC_PIC_SYMBOL_GOTPC))]
  "flag_pic"
  "lrw\t%0, %1@GOTPC"
)

(define_insn "*pic_symbol_gotoff"
  [(set (match_operand:SI	      0 "register_operand" "=r")
	(unspec:SI [(match_operand:SI 1 "" "")] UNSPEC_PIC_SYMBOL_GOTOFF))]
  "flag_pic"
  "lrw\t%0, %1@GOTOFF"
)

(define_insn "*pic_symbol_got"
  [(set (match_operand:SI	      0 "register_operand" "=r")
	(unspec:SI [(match_operand:SI 1 "" "")] UNSPEC_PIC_SYMBOL_GOT))]
  "flag_pic"
  "lrw\t%0, %1@GOT"
)

(define_insn "*pic_symbol_plt"
  [(set (match_operand:SI	      0 "register_operand" "=r")
	(unspec:SI [(match_operand:SI 1 "" "")] UNSPEC_PIC_SYMBOL_PLT))]
  "flag_pic"
  "lrw\t%0, %1@PLT"
)

(define_insn "*pic_symbol_grs"
  [(set (match_operand:SI	      0 "register_operand" "=r")
	(unspec:SI [(match_operand:SI 1 "" "")] UNSPEC_PIC_SYMBOL_GRS))]
  "flag_pic"
  "grs\t%0, %1"
)

(define_expand "builtin_setjmp_receiver"
  [(label_ref (match_operand 0 "" ""))]
  "flag_pic"
  "{
    rtx l1 = gen_label_rtx();
    rtx grs_label = gen_rtx_LABEL_REF (SImode, l1);
    rtx reg_gb = gen_rtx_REG (SImode, PIC_OFFSET_TABLE_REGNUM);
    rtx reg_temp = gen_rtx_REG (SImode, 12);

    rtx tmp0_unspec = gen_rtx_UNSPEC (Pmode,
				      gen_rtvec (1, grs_label),
				      UNSPEC_PIC_SYMBOL_GOTPC_GRS);
    rtx tmp1_unspec = gen_rtx_UNSPEC (Pmode,
				      gen_rtvec (1, grs_label),
				      UNSPEC_PIC_SYMBOL_GOTPC);

    emit_insn (gen_prologue_get_pc (tmp0_unspec));
    emit_move_insn (reg_temp, tmp1_unspec);
    emit_insn (gen_addsi3 (reg_gb, reg_gb, reg_temp));
    emit_use (reg_gb);

    DONE;
  }"
)

;; -------------------------------------------------------------------------
;; TLS related insns
;; -------------------------------------------------------------------------


;; UNSPEC_TLS can take either 2 or 3 operands.  Operand 0 is the symbol_ref,
;; operand 1 is a CONST_INT identifying the TLS model, and the optional
;; operand 3 is an UNSPEC_TLS_LABEL.
;; The 3-operand case is for TLS_GD32, TLS_LDM32, and TLS_IE32.
;; The 2-operand case is for TLS_LE32 and TLS_LDO32.

;; Move PC-relative TLS label to reg.  This is used for the TLS_GD32
;; and TLS_GD32 models (when setting up a call to tls_get_addr) and
;; also TLS_IE32.

(define_insn "*tls_pcrel_label"
  [(set (match_operand:SI	      0 "register_operand" "=r")
	(unspec:SI [(match_operand:SI 1 "const_int_operand" "")]
		   UNSPEC_TLS_LABEL))]
  "TARGET_TLS"
  "grs\t%0, .LTLS%1"
  [(set_attr "length" "4")]
)

;; This pattern is used to load the TLS base for the same models as above.
;; The embedded UNSPEC_TLS_LABEL only identifies the label to emit and
;; doesn't generate a reference to it; that's handled by the *tls_pcrel_label
;; pattern above.  The label offset needs to be added to the result stored
;; in operand 0 by this insn.

(define_insn "*tls_get_symbol_1"
  [(set (match_operand:SI		       0 "register_operand" "=r")
	(unspec:SI [(match_operand	       1 "" "")
		    (match_operand	       2 "" "")
		    (unspec:SI [(match_operand 3 "" "")] UNSPEC_TLS_LABEL)]
		   UNSPEC_TLS))]
  "TARGET_TLS"
  {
    default_internal_label (asm_out_file, \"LTLS\", INTVAL (operands[3]));
    switch (INTVAL (operands[2]))
      {
      case TLS_GD32:
	return \"lrw\t%0, %1@TLSGD32\";
      case TLS_LDM32:
	return \"lrw\t%0, %1@TLSLDM32\";
      case TLS_IE32:
	return \"lrw\t%0, %1@GOTTPOFF\";
      default:
	return \"\";
      }
  }
)

;; This pattern matches the two-operand form of UNSPEC_TLS.

(define_insn "*tls_get_symbol_2"
  [(set (match_operand:SI	   0 "register_operand" "=r")
	(unspec:SI [(match_operand 1 "" "")
		    (match_operand 2 "" "")]
		   UNSPEC_TLS))]
  "TARGET_TLS"
  {
    switch (INTVAL (operands[2]))
      {
      case TLS_LE32:
	return \"lrw\t%0, %1@TPOFF\";
      case TLS_LDO32:
	return \"lrw\t%0, %1@TLSLDO32\";
      default:
	return \"\";
      }
  }
)


;; -------------------------------------------------------------
;; Misc insns
;; -------------------------------------------------------------

(define_insn "nop"
  [(const_int 0)]
  ""
  "nop"
  [(set_attr "length" "2")]
)

(define_insn "trap"
  [(trap_if (const_int 1) (const_int 0))]
  ""
  "bkpt"
  [(set (attr "length") (const_int 2))
   (set_attr "type" "alu")]
)


;; -------------------------------------------------------------
;; Special patterns for dealing with the constant pool
;; -------------------------------------------------------------

(define_insn "align_4"
  [(unspec_volatile [(const_int 0)] VUNSPEC_ALIGN)]
  ""
  {
    assemble_align(32);
    return \"\";
  }
  [(set_attr "length" "0")]
)

(define_insn "csky_constpool_label"
  [(unspec_volatile [(match_operand 0 "" "")] VUNSPEC_POOL_LABEL)]
  ""
  {
    char tmp_label[15];
    ASM_GENERATE_INTERNAL_LABEL (tmp_label, \"LCP\", INTVAL (operands[0]));
    assemble_label (asm_out_file, tmp_label);
    return \"\";
  }
  [(set_attr "length" "0")]
)

(define_insn "consttable_4"
  [(unspec_volatile [(match_operand 0 "" "")] VUNSPEC_POOL_4)]
  ""
  {
    if (CONST_DOUBLE_P (operands[0]))
      assemble_real (*CONST_DOUBLE_REAL_VALUE (operands[0]),
		     SFmode, BITS_PER_WORD);
    else
      {
	assemble_integer (operands[0], 4, BITS_PER_WORD, 1);
	mark_symbol_refs_as_used (operands[0]);
      }
    return \"\";
  }
  [(set_attr "length" "4")]
)

(define_insn "consttable_8"
  [(unspec_volatile [(match_operand 0 "" "")] VUNSPEC_POOL_8)]
  ""
  {
    if (CONST_DOUBLE_P (operands[0]))
      assemble_real (*CONST_DOUBLE_REAL_VALUE (operands[0]),
		     DFmode, BITS_PER_WORD);
    else
      assemble_integer (operands[0], 8, BITS_PER_WORD, 1);
    return \"\";
  }
  [(set_attr "length" "8")]
)

;;FIXME record the deferred symbol_ref information with use insn
(define_insn "*cskyv2_use_symbol_ref"
  [(unspec_volatile [(match_operand 0 "" "")] VUNSPEC_SYMBOL_REF)]
  ""
  ""
  [(set_attr "length" "0")]
)


;; ------------------------------------------------------------
;; switch case optimize
;; ------------------------------------------------------------

(define_expand "casesi"
  [(match_operand:SI 0 "register_operand" "")	; index to jump on
   (match_operand:SI 1 "const_int_operand" "")	; lower bound
   (match_operand:SI 2 "const_int_operand" "")	; total range (max - min)
   (match_operand:SI 3 "" "")			; table label
   (match_operand:SI 4 "" "")]			; Out of range label (default:)
  "TARGET_CASESI"
  "
  {
    enum insn_code code;
    if (operands[1] != const0_rtx)
      {
	rtx reg = gen_reg_rtx (SImode);
	emit_insn (gen_subsi3 (reg,
			       operands[0],
			       GEN_INT (INTVAL (operands[1]))));
	operands[0] = reg;
      }

    code = CODE_FOR_csky_casesi_internal;

    if (!insn_data[(int) code].operand[1].predicate(operands[2], SImode))
      operands[2] = force_reg (SImode,operands[2]);

    emit_jump_insn (GEN_FCN ((int) code) (operands[0],operands[2],
		    operands[3],operands[4]));
    DONE;
  }"
)

(define_expand "csky_casesi_internal"
  [(match_operand:SI 0 "register_operand" "")
   (match_operand:SI 1 "csky_literal_Uk_operand" "")
   (match_operand    2 "" "")
   (match_operand    3 "" "")]
  ""
  {
    rtx reg0;
    rtx test = gen_rtx_GTU (VOIDmode, operands[0], operands[1]);
    emit_jump_insn (gen_cbranchsi4 (test, operands[0], operands[1],
				    operands[3]));
    reg0 = gen_rtx_REG (SImode, 0);
    emit_move_insn (reg0, operands[0]);
    emit_jump_insn (gen_csky_casesi_dispatch (operands[2]));
    DONE;
  }
)

(define_insn "csky_casesi_dispatch"
  [(parallel [(set (pc) (unspec [(reg:SI 0)
				 (label_ref (match_operand 0 "" ""))]
				UNSPEC_CSKY_CASESI))
	      (clobber (reg:SI CSKY_LR_REGNUM))])]
  ""
  "*return csky_output_casesi (operands);"
  [(set_attr "length" "4")]
)

;; ------------------------------------------------------------------------
;; index insns
;; ------------------------------------------------------------------------

(define_insn "*cskyv2_indexsi_t"
  [(set (match_operand:SI 0 "register_operand" "=r")
	(plus:SI (mult:SI (match_operand:SI 1 "register_operand" "r")
			  (const_int 4))
		 (match_operand:SI 2 "register_operand" "r")))]
  "CSKY_ISA_FEATURE (E2)"
  "ixw\t%0, %2, %1"
)

(define_insn "*cskyv2_indexhi_t"
  [(set (match_operand:SI 0 "register_operand" "=r")
	(plus:SI (mult:SI (match_operand:SI 1 "register_operand" "r")
			  (const_int 2))
		 (match_operand:SI 2 "register_operand" "r")))]
  "CSKY_ISA_FEATURE (E2)"
  "ixh\t%0, %2, %1"
)

(define_insn "*cskyv2_indexdi_t"
  [(set (match_operand:SI 0 "register_operand" "=r")
	(plus:SI (mult:SI (match_operand:SI 1 "register_operand" "r")
			  (const_int 8))
		 (match_operand:SI 2 "register_operand" "r")))]
  "CSKY_ISA_FEATURE (2E3)"
  "ixd\t%0, %2, %1"
)

;; ------------------------------------------------------------------------
;; swap insns
;; ------------------------------------------------------------------------

(define_insn "bswapsi2"
  [(set (match_operand:SI 0 "register_operand" "=r")
	(bswap:SI (match_operand:SI 1 "register_operand" "r")))]
  "CSKY_ISA_FEATURE (E2)"
  "revb\t%0, %1"
)