alpha.c (alpha_emit_conditional_branch): Handle TFmode unordered compares properly.

[gcc.git] / gcc / config / alpha / alpha.md

;; Machine description for DEC Alpha for GNU C compiler
;; Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
;; 2000 Free Software Foundation, Inc.
;; Contributed by Richard Kenner (kenner@vlsi1.ultra.nyu.edu)

;; This file is part of GNU CC.

;; GNU CC 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 2, or (at your option)
;; any later version.

;; GNU CC 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 GNU CC; see the file COPYING.  If not, write to
;; the Free Software Foundation, 59 Temple Place - Suite 330,
;; Boston, MA 02111-1307, USA.

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

;; Uses of UNSPEC in this file:
;;
;;      0       arg_home
;;      1       cttz
;;      2       insxh
;;      3       mskxh
;;      5       cvtql
;;      6       nt_lda
;;      
;; UNSPEC_VOLATILE:
;;
;;      0       imb
;;      1       blockage
;;      2       builtin_setjmp_receiver
;;      3       builtin_longjmp
;;      4       trapb
;;      5       prologue_stack_probe_loop
;;      6       realign
;;      7       exception_receiver
;;      8       prologue_mcount
;;      9       prologue_ldgp_1
;;      10      prologue_ldgp_2
\f
;; Processor type -- this attribute must exactly match the processor_type
;; enumeration in alpha.h.

(define_attr "cpu" "ev4,ev5,ev6"
  (const (symbol_ref "alpha_cpu")))

;; Define an insn type attribute.  This is used in function unit delay
;; computations, among other purposes.  For the most part, we use the names
;; defined in the EV4 documentation, but add a few that we have to know about
;; separately.

(define_attr "type"
  "ild,fld,ldsym,ist,fst,ibr,fbr,jsr,iadd,ilog,shift,icmov,fcmov,icmp,imul,fadd,fmul,fcpys,fdiv,fsqrt,misc,mvi,ftoi,itof,multi"
  (const_string "iadd"))

;; Describe a user's asm statement.
(define_asm_attributes
  [(set_attr "type" "multi")])

;; Define the operand size an insn operates on.  Used primarily by mul
;; and div operations that have size dependant timings.

(define_attr "opsize" "si,di,udi" (const_string "di"))

;; The TRAP_TYPE attribute marks instructions that may generate traps
;; (which are imprecise and may need a trapb if software completion
;; is desired).

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

;; The length of an instruction sequence in bytes.

(define_attr "length" "" (const_int 4))
\f
;; On EV4 there are two classes of resources to consider: resources needed
;; to issue, and resources needed to execute.  IBUS[01] are in the first
;; category.  ABOX, BBOX, EBOX, FBOX, IMUL & FDIV make up the second.
;; (There are a few other register-like resources, but ...)

; First, describe all of the issue constraints with single cycle delays.
; All insns need a bus, but all except loads require one or the other.
(define_function_unit "ev4_ibus0" 1 0
  (and (eq_attr "cpu" "ev4")
       (eq_attr "type" "fst,fbr,iadd,imul,ilog,shift,icmov,icmp"))
  1 1)

(define_function_unit "ev4_ibus1" 1 0
  (and (eq_attr "cpu" "ev4")
       (eq_attr "type" "ist,ibr,jsr,fadd,fcmov,fcpys,fmul,fdiv,misc"))
  1 1)

; Memory delivers its result in three cycles.  Actually return one and
; take care of this in adjust_cost, since we want to handle user-defined
; memory latencies.
(define_function_unit "ev4_abox" 1 0
  (and (eq_attr "cpu" "ev4")
       (eq_attr "type" "ild,fld,ldsym,ist,fst"))
  1 1)

; Branches have no delay cost, but do tie up the unit for two cycles.
(define_function_unit "ev4_bbox" 1 1
  (and (eq_attr "cpu" "ev4")
       (eq_attr "type" "ibr,fbr,jsr"))
  2 2)

; Arithmetic insns are normally have their results available after
; two cycles.  There are a number of exceptions.  They are encoded in
; ADJUST_COST.  Some of the other insns have similar exceptions.
(define_function_unit "ev4_ebox" 1 0
  (and (eq_attr "cpu" "ev4")
       (eq_attr "type" "iadd,ilog,shift,icmov,icmp,misc"))
  2 1)

(define_function_unit "imul" 1 0
  (and (eq_attr "cpu" "ev4")
       (and (eq_attr "type" "imul")
            (eq_attr "opsize" "si")))
  21 19)

(define_function_unit "imul" 1 0
  (and (eq_attr "cpu" "ev4")
       (and (eq_attr "type" "imul")
            (eq_attr "opsize" "!si")))
  23 21)

(define_function_unit "ev4_fbox" 1 0
  (and (eq_attr "cpu" "ev4")
       (eq_attr "type" "fadd,fmul,fcpys,fcmov"))
  6 1)

(define_function_unit "fdiv" 1 0
  (and (eq_attr "cpu" "ev4")
       (and (eq_attr "type" "fdiv")
            (eq_attr "opsize" "si")))
  34 30)

(define_function_unit "fdiv" 1 0
  (and (eq_attr "cpu" "ev4")
       (and (eq_attr "type" "fdiv")
            (eq_attr "opsize" "di")))
  63 59)
\f
;; EV5 scheduling.  EV5 can issue 4 insns per clock.
;;
;; EV5 has two asymetric integer units.  Model this with E0 & E1 along
;; with the combined resource EBOX.

(define_function_unit "ev5_ebox" 2 0
  (and (eq_attr "cpu" "ev5")
       (eq_attr "type" "!fbr,fcmov,fadd,fmul,fcpys,fdiv"))
  1 1)

; Memory takes at least 2 clocks.  Return one from here and fix up with
; user-defined latencies in adjust_cost.
(define_function_unit "ev5_ebox" 2 0
  (and (eq_attr "cpu" "ev5")
       (eq_attr "type" "ild,fld,ldsym"))
  1 1)

; Loads can dual issue with one another, but loads and stores do not mix.
(define_function_unit "ev5_e0" 1 0
  (and (eq_attr "cpu" "ev5")
       (eq_attr "type" "ild,fld,ldsym"))
  1 1
  [(eq_attr "type" "ist,fst")])

; Stores, shifts, multiplies can only issue to E0
(define_function_unit "ev5_e0" 1 0
  (and (eq_attr "cpu" "ev5")
       (eq_attr "type" "ist,fst,shift,imul"))
  1 1)

; Motion video insns also issue only to E0, and take two ticks.
(define_function_unit "ev5_e0" 1 0
  (and (eq_attr "cpu" "ev5")
       (eq_attr "type" "mvi"))
  2 1)

; Conditional moves always take 2 ticks.
(define_function_unit "ev5_ebox" 2 0
  (and (eq_attr "cpu" "ev5")
       (eq_attr "type" "icmov"))
  2 1)

; Branches can only issue to E1
(define_function_unit "ev5_e1" 1 0
  (and (eq_attr "cpu" "ev5")
       (eq_attr "type" "ibr,jsr"))
  1 1)

; Multiplies also use the integer multiplier.
; ??? How to: "No instruction can be issued to pipe E0 exactly two
; cycles before an integer multiplication completes."
(define_function_unit "imul" 1 0
  (and (eq_attr "cpu" "ev5")
       (and (eq_attr "type" "imul")
            (eq_attr "opsize" "si")))
  8 4)

(define_function_unit "imul" 1 0
  (and (eq_attr "cpu" "ev5")
       (and (eq_attr "type" "imul")
            (eq_attr "opsize" "di")))
  12 8)

(define_function_unit "imul" 1 0
  (and (eq_attr "cpu" "ev5")
       (and (eq_attr "type" "imul")
            (eq_attr "opsize" "udi")))
  14 8)

;; Similarly for the FPU we have two asymetric units.  But fcpys can issue
;; on either so we have to play the game again.

(define_function_unit "ev5_fbox" 2 0
  (and (eq_attr "cpu" "ev5")
       (eq_attr "type" "fadd,fcmov,fmul,fcpys,fbr,fdiv"))
  4 1)
  
(define_function_unit "ev5_fm" 1 0
  (and (eq_attr "cpu" "ev5")
       (eq_attr "type" "fmul"))
  4 1)

; Add and cmov as you would expect; fbr never produces a result;
; fdiv issues through fa to the divider, 
(define_function_unit "ev5_fa" 1 0
  (and (eq_attr "cpu" "ev5")
       (eq_attr "type" "fadd,fcmov,fbr,fdiv"))
  4 1)

; ??? How to: "No instruction can be issued to pipe FA exactly five
; cycles before a floating point divide completes."
(define_function_unit "fdiv" 1 0
  (and (eq_attr "cpu" "ev5")
       (and (eq_attr "type" "fdiv")
            (eq_attr "opsize" "si")))
  15 15)                                ; 15 to 31 data dependant

(define_function_unit "fdiv" 1 0
  (and (eq_attr "cpu" "ev5")
       (and (eq_attr "type" "fdiv")
            (eq_attr "opsize" "di")))
  22 22)                                ; 22 to 60 data dependant
\f
;; EV6 scheduling.  EV6 can issue 4 insns per clock.
;;
;; EV6 has two symmetric pairs ("clusters") of two asymetric integer units
;; ("upper" and "lower"), yielding pipe names U0, U1, L0, L1.

;; Conditional moves decompose into two independant primitives, each 
;; taking one cycle.  Since ev6 is out-of-order, we can't see anything
;; but two cycles.
(define_function_unit "ev6_ebox" 4 0
  (and (eq_attr "cpu" "ev6")
       (eq_attr "type" "icmov"))
  2 1)

(define_function_unit "ev6_ebox" 4 0
  (and (eq_attr "cpu" "ev6")
       (eq_attr "type" "!fbr,fcmov,fadd,fmul,fcpys,fdiv,fsqrt"))
  1 1)

;; Integer loads take at least 3 clocks, and only issue to lower units.
;; Return one from here and fix up with user-defined latencies in adjust_cost.
(define_function_unit "ev6_l" 2 0
  (and (eq_attr "cpu" "ev6")
       (eq_attr "type" "ild,ldsym,ist,fst"))
  1 1)

;; FP loads take at least 4 clocks.  Return two from here...
(define_function_unit "ev6_l" 2 0
  (and (eq_attr "cpu" "ev6")
       (eq_attr "type" "fld"))
  2 1)

;; Motion video insns also issue only to U0, and take three ticks.
(define_function_unit "ev6_u0" 1 0
  (and (eq_attr "cpu" "ev6")
       (eq_attr "type" "mvi"))
  3 1)

(define_function_unit "ev6_u" 2 0
  (and (eq_attr "cpu" "ev6")
       (eq_attr "type" "mvi"))
  3 1)

;; Shifts issue to either upper pipe.
(define_function_unit "ev6_u" 2 0
  (and (eq_attr "cpu" "ev6")
       (eq_attr "type" "shift"))
  1 1)

;; Multiplies issue only to U1, and all take 7 ticks.
;; Rather than create a new function unit just for U1, reuse IMUL
(define_function_unit "imul" 1 0
  (and (eq_attr "cpu" "ev6")
       (eq_attr "type" "imul"))
  7 1)

(define_function_unit "ev6_u" 2 0
  (and (eq_attr "cpu" "ev6")
       (eq_attr "type" "imul"))
  7 1)

;; Branches issue to either upper pipe
(define_function_unit "ev6_u" 2 0
  (and (eq_attr "cpu" "ev6")
       (eq_attr "type" "ibr"))
  3 1)

;; Calls only issue to L0.
(define_function_unit "ev6_l0" 1 0
  (and (eq_attr "cpu" "ev6")
       (eq_attr "type" "jsr"))
  1 1)

(define_function_unit "ev6_l" 2 0
  (and (eq_attr "cpu" "ev6")
       (eq_attr "type" "jsr"))
  1 1)

;; Ftoi/itof only issue to lower pipes
(define_function_unit "ev6_l" 2 0
  (and (eq_attr "cpu" "ev6")
       (eq_attr "type" "ftoi"))
  3 1)

(define_function_unit "ev6_l" 2 0
  (and (eq_attr "cpu" "ev6")
       (eq_attr "type" "itof"))
  4 1)

;; For the FPU we are very similar to EV5, except there's no insn that
;; can issue to fm & fa, so we get to leave that out.
  
(define_function_unit "ev6_fm" 1 0
  (and (eq_attr "cpu" "ev6")
       (eq_attr "type" "fmul"))
  4 1)

(define_function_unit "ev6_fa" 1 0
  (and (eq_attr "cpu" "ev6")
       (eq_attr "type" "fadd,fcpys,fbr,fdiv,fsqrt"))
  4 1)

(define_function_unit "ev6_fa" 1 0
  (and (eq_attr "cpu" "ev6")
       (eq_attr "type" "fcmov"))
  8 1)

(define_function_unit "fdiv" 1 0
  (and (eq_attr "cpu" "ev6")
       (and (eq_attr "type" "fdiv")
            (eq_attr "opsize" "si")))
  12 10)

(define_function_unit "fdiv" 1 0
  (and (eq_attr "cpu" "ev6")
       (and (eq_attr "type" "fdiv")
            (eq_attr "opsize" "di")))
  15 13)

(define_function_unit "fsqrt" 1 0
  (and (eq_attr "cpu" "ev6")
       (and (eq_attr "type" "fsqrt")
            (eq_attr "opsize" "si")))
  16 14)

(define_function_unit "fsqrt" 1 0
  (and (eq_attr "cpu" "ev6")
       (and (eq_attr "type" "fsqrt")
            (eq_attr "opsize" "di")))
  32 30)

; ??? The FPU communicates with memory and the integer register file
; via two fp store units.  We need a slot in the fst immediately, and
; a slot in LOW after the operand data is ready.  At which point the
; data may be moved either to the store queue or the integer register
; file and the insn retired.

\f
;; First define the arithmetic insns.  Note that the 32-bit forms also
;; sign-extend.

;; Handle 32-64 bit extension from memory to a floating point register
;; specially, since this ocurrs frequently in int->double conversions.
;;
;; Note that while we must retain the =f case in the insn for reload's
;; benefit, it should be eliminated after reload, so we should never emit
;; code for that case.  But we don't reject the possibility.

(define_expand "extendsidi2"
  [(set (match_operand:DI 0 "register_operand" "")
        (sign_extend:DI (match_operand:SI 1 "nonimmediate_operand" "")))]
  ""
  "")

(define_insn ""
  [(set (match_operand:DI 0 "register_operand" "=r,r,*f,?*f")
        (sign_extend:DI
          (match_operand:SI 1 "nonimmediate_operand" "r,m,*f,m")))]
  "! TARGET_FIX"
  "@
   addl %1,$31,%0
   ldl %0,%1
   cvtlq %1,%0
   lds %0,%1\;cvtlq %0,%0"
  [(set_attr "type" "iadd,ild,fadd,fld")
   (set_attr "length" "*,*,*,8")])

(define_insn ""
  [(set (match_operand:DI 0 "register_operand" "=r,r,r,*f,?*f")
        (sign_extend:DI
          (match_operand:SI 1 "nonimmediate_operand" "r,m,*f,*f,m")))]
  "TARGET_FIX"
  "@
   addl %1,$31,%0
   ldl %0,%1
   ftois %1,%0
   cvtlq %1,%0
   lds %0,%1\;cvtlq %0,%0"
  [(set_attr "type" "iadd,ild,ftoi,fadd,fld")
   (set_attr "length" "*,*,*,*,8")])

;; Due to issues with CLASS_CANNOT_CHANGE_SIZE, we cannot use a subreg here.
(define_split
  [(set (match_operand:DI 0 "hard_fp_register_operand" "")
        (sign_extend:DI (match_operand:SI 1 "memory_operand" "")))]
  "reload_completed"
  [(set (match_dup 2) (match_dup 1))
   (set (match_dup 0) (sign_extend:DI (match_dup 2)))]
  "operands[2] = gen_rtx_REG (SImode, REGNO (operands[0]));")

;; Do addsi3 the way expand_binop would do if we didn't have one.  This
;; generates better code.  We have the anonymous addsi3 pattern below in
;; case combine wants to make it.
(define_expand "addsi3"
  [(set (match_operand:SI 0 "register_operand" "")
        (plus:SI (match_operand:SI 1 "reg_or_0_operand" "")
                 (match_operand:SI 2 "add_operand" "")))]
  ""
  "
{
  if (optimize)
    {
      rtx op1 = gen_lowpart (DImode, operands[1]);
      rtx op2 = gen_lowpart (DImode, operands[2]);

      if (! cse_not_expected)
        {
          rtx tmp = gen_reg_rtx (DImode);
          emit_insn (gen_adddi3 (tmp, op1, op2));
          emit_move_insn (gen_lowpart (DImode, operands[0]), tmp);
        }
      else
        emit_insn (gen_adddi3 (gen_lowpart (DImode, operands[0]), op1, op2));
      DONE;
    }
}")

(define_insn ""
  [(set (match_operand:SI 0 "register_operand" "=r,r,r,r")
        (plus:SI (match_operand:SI 1 "reg_or_0_operand" "%rJ,rJ,rJ,rJ")
                 (match_operand:SI 2 "add_operand" "rI,O,K,L")))]
  ""
  "@
   addl %r1,%2,%0
   subl %r1,%n2,%0
   lda %0,%2(%r1)
   ldah %0,%h2(%r1)")

(define_split
  [(set (match_operand:SI 0 "register_operand" "")
        (plus:SI (match_operand:SI 1 "register_operand" "")
                 (match_operand:SI 2 "const_int_operand" "")))]
  "! add_operand (operands[2], SImode)"
  [(set (match_dup 0) (plus:SI (match_dup 1) (match_dup 3)))
   (set (match_dup 0) (plus:SI (match_dup 0) (match_dup 4)))]
  "
{
  HOST_WIDE_INT val = INTVAL (operands[2]);
  HOST_WIDE_INT low = (val & 0xffff) - 2 * (val & 0x8000);
  HOST_WIDE_INT rest = val - low;

  operands[3] = GEN_INT (rest);
  operands[4] = GEN_INT (low);
}")

(define_insn ""
  [(set (match_operand:DI 0 "register_operand" "=r,r")
        (sign_extend:DI
         (plus:SI (match_operand:SI 1 "reg_or_0_operand" "%rJ,rJ")
                  (match_operand:SI 2 "sext_add_operand" "rI,O"))))]
  ""
  "@
   addl %r1,%2,%0
   subl %r1,%n2,%0")

(define_split
  [(set (match_operand:DI 0 "register_operand" "")
        (sign_extend:DI
         (plus:SI (match_operand:SI 1 "reg_not_elim_operand" "")
                  (match_operand:SI 2 "const_int_operand" ""))))
   (clobber (match_operand:SI 3 "reg_not_elim_operand" ""))]
  "! sext_add_operand (operands[2], SImode) && INTVAL (operands[2]) > 0
   && INTVAL (operands[2]) % 4 == 0"
  [(set (match_dup 3) (match_dup 4))
   (set (match_dup 0) (sign_extend:DI (plus:SI (mult:SI (match_dup 3)
                                                        (match_dup 5))
                                               (match_dup 1))))]
  "
{
  HOST_WIDE_INT val = INTVAL (operands[2]) / 4;
  int mult = 4;

  if (val % 2 == 0)
    val /= 2, mult = 8;

  operands[4] = GEN_INT (val);
  operands[5] = GEN_INT (mult);
}")

(define_split
  [(set (match_operand:DI 0 "register_operand" "")
        (sign_extend:DI
         (plus:SI (match_operator:SI 1 "comparison_operator"
                                     [(match_operand 2 "" "")
                                      (match_operand 3 "" "")])
                  (match_operand:SI 4 "add_operand" ""))))
   (clobber (match_operand:DI 5 "register_operand" ""))]
  ""
  [(set (match_dup 5) (match_dup 6))
   (set (match_dup 0) (sign_extend:DI (plus:SI (match_dup 7) (match_dup 4))))]
  "
{
  operands[6] = gen_rtx_fmt_ee (GET_CODE (operands[1]), DImode,
                                operands[2], operands[3]);
  operands[7] = gen_lowpart (SImode, operands[5]);
}")

(define_expand "adddi3"
  [(set (match_operand:DI 0 "register_operand" "")
        (plus:DI (match_operand:DI 1 "register_operand" "")
                 (match_operand:DI 2 "add_operand" "")))]
  ""
  "")

;; This pattern exists so that register elimination tries to canonize
;; (plus (plus reg c1) c2).

(define_insn "*lda"
  [(set (match_operand:DI 0 "register_operand" "=r")
        (match_operand:DI 1 "addition_operation" "p"))]
  ""
  "lda %0,%a1")

;; We used to expend quite a lot of effort choosing addq/subq/lda.
;; With complications like
;;
;;   The NT stack unwind code can't handle a subq to adjust the stack
;;   (that's a bug, but not one we can do anything about).  As of NT4.0 SP3,
;;   the exception handling code will loop if a subq is used and an
;;   exception occurs.
;;  
;;   The 19980616 change to emit prologues as RTL also confused some
;;   versions of GDB, which also interprets prologues.  This has been
;;   fixed as of GDB 4.18, but it does not harm to unconditionally
;;   use lda here.
;;
;; and the fact that the three insns schedule exactly the same, it's
;; just not worth the effort.

(define_insn "*adddi_2"
  [(set (match_operand:DI 0 "register_operand" "=r,r,r")
        (plus:DI (match_operand:DI 1 "register_operand" "%r,r,r")
                 (match_operand:DI 2 "add_operand" "r,K,L")))]
  ""
  "@
   addq %1,%2,%0
   lda %0,%2(%1)
   ldah %0,%h2(%1)")

;; ??? Allow large constants when basing off the frame pointer or some
;; virtual register that may eliminate to the frame pointer.  This is
;; done because register elimination offsets will change the hi/lo split,
;; and if we split before reload, we will require additional instructions.

(define_insn ""
  [(set (match_operand:DI 0 "register_operand" "=r")
        (plus:DI (match_operand:DI 1 "reg_no_subreg_operand" "r")
                 (match_operand:DI 2 "const_int_operand" "n")))]
  "REG_OK_FP_BASE_P (operands[1])
   && INTVAL (operands[2]) >= 0
   /* This is the largest constant an lda+ldah pair can add, minus
      an upper bound on the displacement between SP and AP during
      register elimination.  See INITIAL_ELIMINATION_OFFSET.  */
   && INTVAL (operands[2])
        < (0x7fff8000
           - FIRST_PSEUDO_REGISTER * UNITS_PER_WORD
           - ALPHA_ROUND(current_function_outgoing_args_size)
           - (ALPHA_ROUND (get_frame_size ()
                           + max_reg_num () * UNITS_PER_WORD
                           + current_function_pretend_args_size)
              - current_function_pretend_args_size))"
  "#")

;; Don't do this if we are adjusting SP since we don't want to do it
;; in two steps.  Don't split FP sources for the reason listed above.
(define_split
  [(set (match_operand:DI 0 "register_operand" "")
        (plus:DI (match_operand:DI 1 "register_operand" "")
                 (match_operand:DI 2 "const_int_operand" "")))]
  "! add_operand (operands[2], DImode)
   && operands[0] != stack_pointer_rtx
   && operands[1] != frame_pointer_rtx
   && operands[1] != arg_pointer_rtx"
  [(set (match_dup 0) (plus:DI (match_dup 1) (match_dup 3)))
   (set (match_dup 0) (plus:DI (match_dup 0) (match_dup 4)))]
  "
{
  HOST_WIDE_INT val = INTVAL (operands[2]);
  HOST_WIDE_INT low = (val & 0xffff) - 2 * (val & 0x8000);
  HOST_WIDE_INT rest = val - low;

  operands[4] = GEN_INT (low);
  if (CONST_OK_FOR_LETTER_P (rest, 'L'))
    operands[3] = GEN_INT (rest);
  else if (! no_new_pseudos)
    {
      operands[3] = gen_reg_rtx (DImode);
      emit_move_insn (operands[3], operands[2]);
      emit_insn (gen_adddi3 (operands[0], operands[1], operands[3]));
      DONE;
    }
  else
    FAIL;
}")

(define_insn ""
  [(set (match_operand:SI 0 "register_operand" "=r,r")
        (plus:SI (mult:SI (match_operand:SI 1 "reg_not_elim_operand" "r,r")
                          (match_operand:SI 2 "const48_operand" "I,I"))
                 (match_operand:SI 3 "sext_add_operand" "rI,O")))]
  ""
  "@
   s%2addl %1,%3,%0
   s%2subl %1,%n3,%0")

(define_insn ""
  [(set (match_operand:DI 0 "register_operand" "=r,r")
        (sign_extend:DI
         (plus:SI (mult:SI (match_operand:SI 1 "reg_not_elim_operand" "r,r")
                           (match_operand:SI 2 "const48_operand" "I,I"))
                  (match_operand:SI 3 "sext_add_operand" "rI,O"))))]
  ""
  "@
   s%2addl %1,%3,%0
   s%2subl %1,%n3,%0")

(define_split
  [(set (match_operand:DI 0 "register_operand" "")
        (sign_extend:DI
         (plus:SI (mult:SI (match_operator:SI 1 "comparison_operator"
                                              [(match_operand 2 "" "")
                                               (match_operand 3 "" "")])
                           (match_operand:SI 4 "const48_operand" ""))
                  (match_operand:SI 5 "sext_add_operand" ""))))
   (clobber (match_operand:DI 6 "reg_not_elim_operand" ""))]
  ""
  [(set (match_dup 6) (match_dup 7))
   (set (match_dup 0)
        (sign_extend:DI (plus:SI (mult:SI (match_dup 8) (match_dup 4))
                                 (match_dup 5))))]
  "
{
  operands[7] = gen_rtx_fmt_ee (GET_CODE (operands[1]), DImode,
                                operands[2], operands[3]);
  operands[8] = gen_lowpart (SImode, operands[6]);
}")

(define_insn ""
  [(set (match_operand:DI 0 "register_operand" "=r,r")
        (plus:DI (mult:DI (match_operand:DI 1 "reg_not_elim_operand" "r,r")
                          (match_operand:DI 2 "const48_operand" "I,I"))
                 (match_operand:DI 3 "sext_add_operand" "rI,O")))]
  ""
  "@
   s%2addq %1,%3,%0
   s%2subq %1,%n3,%0")

(define_insn "negsi2"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (neg:SI (match_operand:SI 1 "reg_or_8bit_operand" "rI")))]
  ""
  "subl $31,%1,%0")

(define_insn ""
  [(set (match_operand:DI 0 "register_operand" "=r")
        (sign_extend:DI (neg:SI
                         (match_operand:SI 1 "reg_or_8bit_operand" "rI"))))]
  ""
  "subl $31,%1,%0")

(define_insn "negdi2"
  [(set (match_operand:DI 0 "register_operand" "=r")
        (neg:DI (match_operand:DI 1 "reg_or_8bit_operand" "rI")))]
  ""
  "subq $31,%1,%0")

(define_expand "subsi3"
  [(set (match_operand:SI 0 "register_operand" "")
        (minus:SI (match_operand:SI 1 "reg_or_0_operand" "")
                  (match_operand:SI 2 "reg_or_8bit_operand" "")))]
  ""
  "
{
  if (optimize)
    {
      rtx op1 = gen_lowpart (DImode, operands[1]);
      rtx op2 = gen_lowpart (DImode, operands[2]);

      if (! cse_not_expected)
        {
          rtx tmp = gen_reg_rtx (DImode);
          emit_insn (gen_subdi3 (tmp, op1, op2));
          emit_move_insn (gen_lowpart (DImode, operands[0]), tmp);
        }
      else
        emit_insn (gen_subdi3 (gen_lowpart (DImode, operands[0]), op1, op2));
      DONE;
    }
} ")

(define_insn ""
  [(set (match_operand:SI 0 "register_operand" "=r")
        (minus:SI (match_operand:SI 1 "reg_or_0_operand" "rJ")
                  (match_operand:SI 2 "reg_or_8bit_operand" "rI")))]
  ""
  "subl %r1,%2,%0")

(define_insn ""
  [(set (match_operand:DI 0 "register_operand" "=r")
        (sign_extend:DI (minus:SI (match_operand:SI 1 "reg_or_0_operand" "rJ")
                                  (match_operand:SI 2 "reg_or_8bit_operand" "rI"))))]
  ""
  "subl %r1,%2,%0")

(define_insn "subdi3"
  [(set (match_operand:DI 0 "register_operand" "=r")
        (minus:DI (match_operand:DI 1 "reg_or_0_operand" "rJ")
                  (match_operand:DI 2 "reg_or_8bit_operand" "rI")))]
  ""
  "subq %r1,%2,%0")

(define_insn ""
  [(set (match_operand:SI 0 "register_operand" "=r")
        (minus:SI (mult:SI (match_operand:SI 1 "reg_not_elim_operand" "r")
                           (match_operand:SI 2 "const48_operand" "I"))
                  (match_operand:SI 3 "reg_or_8bit_operand" "rI")))]
  ""
  "s%2subl %1,%3,%0")

(define_insn ""
  [(set (match_operand:DI 0 "register_operand" "=r")
        (sign_extend:DI
         (minus:SI (mult:SI (match_operand:SI 1 "reg_not_elim_operand" "r")
                            (match_operand:SI 2 "const48_operand" "I"))
                   (match_operand:SI 3 "reg_or_8bit_operand" "rI"))))]
  ""
  "s%2subl %1,%3,%0")

(define_insn ""
  [(set (match_operand:DI 0 "register_operand" "=r")
        (minus:DI (mult:DI (match_operand:DI 1 "reg_not_elim_operand" "r")
                           (match_operand:DI 2 "const48_operand" "I"))
                  (match_operand:DI 3 "reg_or_8bit_operand" "rI")))]
  ""
  "s%2subq %1,%3,%0")

(define_insn "mulsi3"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (mult:SI (match_operand:SI 1 "reg_or_0_operand" "%rJ")
                 (match_operand:SI 2 "reg_or_8bit_operand" "rI")))]
  ""
  "mull %r1,%2,%0"
  [(set_attr "type" "imul")
   (set_attr "opsize" "si")])

(define_insn ""
  [(set (match_operand:DI 0 "register_operand" "=r")
        (sign_extend:DI
          (mult:SI (match_operand:SI 1 "reg_or_0_operand" "%rJ")
                   (match_operand:SI 2 "reg_or_8bit_operand" "rI"))))]
  ""
  "mull %r1,%2,%0"
  [(set_attr "type" "imul")
   (set_attr "opsize" "si")])

(define_insn "muldi3"
  [(set (match_operand:DI 0 "register_operand" "=r")
        (mult:DI (match_operand:DI 1 "reg_or_0_operand" "%rJ")
                 (match_operand:DI 2 "reg_or_8bit_operand" "rI")))]
  ""
  "mulq %r1,%2,%0"
  [(set_attr "type" "imul")])

(define_insn "umuldi3_highpart"
  [(set (match_operand:DI 0 "register_operand" "=r")
        (truncate:DI
         (lshiftrt:TI
          (mult:TI (zero_extend:TI
                     (match_operand:DI 1 "reg_or_0_operand" "%rJ"))
                   (zero_extend:TI
                     (match_operand:DI 2 "reg_or_8bit_operand" "rI")))
          (const_int 64))))]
  ""
  "umulh %r1,%2,%0"
  [(set_attr "type" "imul")
   (set_attr "opsize" "udi")])

(define_insn ""
  [(set (match_operand:DI 0 "register_operand" "=r")
        (truncate:DI
         (lshiftrt:TI
          (mult:TI (zero_extend:TI (match_operand:DI 1 "register_operand" "r"))
                   (match_operand:TI 2 "cint8_operand" "I"))
          (const_int 64))))]
  ""
  "umulh %1,%2,%0"
  [(set_attr "type" "imul")
   (set_attr "opsize" "udi")])
\f
;; The divide and remainder operations always take their inputs from
;; r24 and r25, put their output in r27, and clobber r23 and r28.

;; ??? Force sign-extension here because some versions of OSF/1 don't
;; do the right thing if the inputs are not properly sign-extended.
;; But Linux, for instance, does not have this problem.  Is it worth
;; the complication here to eliminate the sign extension?
;; Interix/NT has the same sign-extension problem.

(define_expand "divsi3"
  [(set (reg:DI 24)
        (sign_extend:DI (match_operand:SI 1 "nonimmediate_operand" "")))
   (set (reg:DI 25)
        (sign_extend:DI (match_operand:SI 2 "nonimmediate_operand" "")))
   (parallel [(set (reg:DI 27)
                   (sign_extend:DI (div:SI (reg:DI 24) (reg:DI 25))))
              (clobber (reg:DI 23))
              (clobber (reg:DI 28))])
   (set (match_operand:SI 0 "nonimmediate_operand" "")
        (subreg:SI (reg:DI 27) 0))]
  "!TARGET_OPEN_VMS"
  "")

(define_expand "udivsi3"
  [(set (reg:DI 24)
        (sign_extend:DI (match_operand:SI 1 "nonimmediate_operand" "")))
   (set (reg:DI 25)
        (sign_extend:DI (match_operand:SI 2 "nonimmediate_operand" "")))
   (parallel [(set (reg:DI 27)
                   (sign_extend:DI (udiv:SI (reg:DI 24) (reg:DI 25))))
              (clobber (reg:DI 23))
              (clobber (reg:DI 28))])
   (set (match_operand:SI 0 "nonimmediate_operand" "")
        (subreg:SI (reg:DI 27) 0))]
  "!TARGET_OPEN_VMS"
  "")

(define_expand "modsi3"
  [(set (reg:DI 24)
        (sign_extend:DI (match_operand:SI 1 "nonimmediate_operand" "")))
   (set (reg:DI 25)
        (sign_extend:DI (match_operand:SI 2 "nonimmediate_operand" "")))
   (parallel [(set (reg:DI 27)
                   (sign_extend:DI (mod:SI (reg:DI 24) (reg:DI 25))))
              (clobber (reg:DI 23))
              (clobber (reg:DI 28))])
   (set (match_operand:SI 0 "nonimmediate_operand" "")
        (subreg:SI (reg:DI 27) 0))]
  "!TARGET_OPEN_VMS"
  "")

(define_expand "umodsi3"
  [(set (reg:DI 24)
        (sign_extend:DI (match_operand:SI 1 "nonimmediate_operand" "")))
   (set (reg:DI 25)
        (sign_extend:DI (match_operand:SI 2 "nonimmediate_operand" "")))
   (parallel [(set (reg:DI 27)
                   (sign_extend:DI (umod:SI (reg:DI 24) (reg:DI 25))))
              (clobber (reg:DI 23))
              (clobber (reg:DI 28))])
   (set (match_operand:SI 0 "nonimmediate_operand" "")
        (subreg:SI (reg:DI 27) 0))]
  "!TARGET_OPEN_VMS"
  "")

(define_expand "divdi3"
  [(set (reg:DI 24) (match_operand:DI 1 "input_operand" ""))
   (set (reg:DI 25) (match_operand:DI 2 "input_operand" ""))
   (parallel [(set (reg:DI 27)
                   (div:DI (reg:DI 24)
                           (reg:DI 25)))
              (clobber (reg:DI 23))
              (clobber (reg:DI 28))])
   (set (match_operand:DI 0 "nonimmediate_operand" "")
        (reg:DI 27))]
  "!TARGET_OPEN_VMS"
  "")

(define_expand "udivdi3"
  [(set (reg:DI 24) (match_operand:DI 1 "input_operand" ""))
   (set (reg:DI 25) (match_operand:DI 2 "input_operand" ""))
   (parallel [(set (reg:DI 27)
                   (udiv:DI (reg:DI 24)
                            (reg:DI 25)))
              (clobber (reg:DI 23))
              (clobber (reg:DI 28))])
   (set (match_operand:DI 0 "nonimmediate_operand" "")
        (reg:DI 27))]
  "!TARGET_OPEN_VMS"
  "")

(define_expand "moddi3"
  [(set (reg:DI 24) (match_operand:DI 1 "input_operand" ""))
   (set (reg:DI 25) (match_operand:DI 2 "input_operand" ""))
   (parallel [(set (reg:DI 27)
                   (mod:DI (reg:DI 24)
                           (reg:DI 25)))
              (clobber (reg:DI 23))
              (clobber (reg:DI 28))])
   (set (match_operand:DI 0 "nonimmediate_operand" "")
        (reg:DI 27))]
  "!TARGET_OPEN_VMS"
  "")

(define_expand "umoddi3"
  [(set (reg:DI 24) (match_operand:DI 1 "input_operand" ""))
   (set (reg:DI 25) (match_operand:DI 2 "input_operand" ""))
   (parallel [(set (reg:DI 27)
                   (umod:DI (reg:DI 24)
                            (reg:DI 25)))
              (clobber (reg:DI 23))
              (clobber (reg:DI 28))])
   (set (match_operand:DI 0 "nonimmediate_operand" "")
        (reg:DI 27))]
  "!TARGET_OPEN_VMS"
  "")

;; Lengths of 8 for ldq $t12,__divq($gp); jsr $t9,($t12),__divq as
;; expanded by the assembler.
(define_insn ""
  [(set (reg:DI 27)
        (sign_extend:DI (match_operator:SI 1 "divmod_operator"
                        [(reg:DI 24) (reg:DI 25)])))
   (clobber (reg:DI 23))
   (clobber (reg:DI 28))]
  "!TARGET_OPEN_VMS"
  "%E1 $24,$25,$27"
  [(set_attr "type" "jsr")
   (set_attr "length" "8")])

(define_insn ""
  [(set (reg:DI 27)
        (match_operator:DI 1 "divmod_operator"
                        [(reg:DI 24) (reg:DI 25)]))
   (clobber (reg:DI 23))
   (clobber (reg:DI 28))]
  "!TARGET_OPEN_VMS"
  "%E1 $24,$25,$27"
  [(set_attr "type" "jsr")
   (set_attr "length" "8")])
\f
;; Next are the basic logical operations.  These only exist in DImode.

(define_insn "anddi3"
  [(set (match_operand:DI 0 "register_operand" "=r,r,r")
        (and:DI (match_operand:DI 1 "reg_or_0_operand" "%rJ,rJ,rJ")
                (match_operand:DI 2 "and_operand" "rI,N,MH")))]
  ""
  "@
   and %r1,%2,%0
   bic %r1,%N2,%0
   zapnot %r1,%m2,%0"
  [(set_attr "type" "ilog,ilog,shift")])

;; There are times when we can split an AND into two AND insns.  This occurs
;; when we can first clear any bytes and then clear anything else.  For
;; example "I & 0xffff07" is "(I & 0xffffff) & 0xffffffffffffff07".
;; Only do this when running on 64-bit host since the computations are
;; too messy otherwise.

(define_split
  [(set (match_operand:DI 0 "register_operand" "")
        (and:DI (match_operand:DI 1 "register_operand" "")
                (match_operand:DI 2 "const_int_operand" "")))]
  "HOST_BITS_PER_WIDE_INT == 64 && ! and_operand (operands[2], DImode)"
  [(set (match_dup 0) (and:DI (match_dup 1) (match_dup 3)))
   (set (match_dup 0) (and:DI (match_dup 0) (match_dup 4)))]
  "
{
  unsigned HOST_WIDE_INT mask1 = INTVAL (operands[2]);
  unsigned HOST_WIDE_INT mask2 = mask1;
  int i;

  /* For each byte that isn't all zeros, make it all ones.  */
  for (i = 0; i < 64; i += 8)
    if ((mask1 & ((HOST_WIDE_INT) 0xff << i)) != 0)
      mask1 |= (HOST_WIDE_INT) 0xff << i;

  /* Now turn on any bits we've just turned off.  */
  mask2 |= ~ mask1;

  operands[3] = GEN_INT (mask1);
  operands[4] = GEN_INT (mask2);
}")

(define_insn "zero_extendqihi2"
  [(set (match_operand:HI 0 "register_operand" "=r")
        (zero_extend:HI (match_operand:QI 1 "register_operand" "r")))]
  ""
  "and %1,0xff,%0"
  [(set_attr "type" "ilog")])

(define_insn ""
  [(set (match_operand:SI 0 "register_operand" "=r,r")
        (zero_extend:SI (match_operand:QI 1 "nonimmediate_operand" "r,m")))]
  "TARGET_BWX"
  "@
   and %1,0xff,%0
   ldbu %0,%1"
  [(set_attr "type" "ilog,ild")])

(define_insn ""
  [(set (match_operand:SI 0 "register_operand" "=r")
        (zero_extend:SI (match_operand:QI 1 "register_operand" "r")))]
  "! TARGET_BWX"
  "and %1,0xff,%0"
  [(set_attr "type" "ilog")])

(define_expand "zero_extendqisi2"
  [(set (match_operand:SI 0 "register_operand" "")
        (zero_extend:SI (match_operand:QI 1 "register_operand" "")))]
  ""
  "")

(define_insn ""
  [(set (match_operand:DI 0 "register_operand" "=r,r")
        (zero_extend:DI (match_operand:QI 1 "nonimmediate_operand" "r,m")))]
  "TARGET_BWX"
  "@
   and %1,0xff,%0
   ldbu %0,%1"
  [(set_attr "type" "ilog,ild")])

(define_insn ""
  [(set (match_operand:DI 0 "register_operand" "=r")
        (zero_extend:DI (match_operand:QI 1 "register_operand" "r")))]
  "! TARGET_BWX"
  "and %1,0xff,%0"
  [(set_attr "type" "ilog")])
  
(define_expand "zero_extendqidi2"
  [(set (match_operand:DI 0 "register_operand" "")
        (zero_extend:DI (match_operand:QI 1 "register_operand" "")))]
  ""
  "")
  
(define_insn ""
  [(set (match_operand:SI 0 "register_operand" "=r,r")
        (zero_extend:SI (match_operand:HI 1 "nonimmediate_operand" "r,m")))]
  "TARGET_BWX"
  "@
   zapnot %1,3,%0
   ldwu %0,%1"
  [(set_attr "type" "shift,ild")])

(define_insn ""
  [(set (match_operand:SI 0 "register_operand" "=r")
        (zero_extend:SI (match_operand:HI 1 "register_operand" "r")))]
  "! TARGET_BWX"
  "zapnot %1,3,%0"
  [(set_attr "type" "shift")])

(define_expand "zero_extendhisi2"
  [(set (match_operand:SI 0 "register_operand" "")
        (zero_extend:SI (match_operand:HI 1 "register_operand" "")))]
  ""
  "")

(define_insn ""
  [(set (match_operand:DI 0 "register_operand" "=r,r")
        (zero_extend:DI (match_operand:HI 1 "nonimmediate_operand" "r,m")))]
  "TARGET_BWX"
  "@
   zapnot %1,3,%0
   ldwu %0,%1"
  [(set_attr "type" "shift,ild")])

(define_insn ""
  [(set (match_operand:DI 0 "register_operand" "=r")
        (zero_extend:DI (match_operand:HI 1 "register_operand" "r")))]
  ""
  "zapnot %1,3,%0"
  [(set_attr "type" "shift")])

(define_expand "zero_extendhidi2"
  [(set (match_operand:DI 0 "register_operand" "")
        (zero_extend:DI (match_operand:HI 1 "register_operand" "")))]
  ""
  "")

(define_insn "zero_extendsidi2"
  [(set (match_operand:DI 0 "register_operand" "=r")
        (zero_extend:DI (match_operand:SI 1 "register_operand" "r")))]
  ""
  "zapnot %1,15,%0"
  [(set_attr "type" "shift")])

(define_insn  ""
  [(set (match_operand:DI 0 "register_operand" "=r")
        (and:DI (not:DI (match_operand:DI 1 "reg_or_8bit_operand" "rI"))
                (match_operand:DI 2 "reg_or_0_operand" "rJ")))]
  ""
  "bic %r2,%1,%0"
  [(set_attr "type" "ilog")])

(define_insn "iordi3"
  [(set (match_operand:DI 0 "register_operand" "=r,r")
        (ior:DI (match_operand:DI 1 "reg_or_0_operand" "%rJ,rJ")
                (match_operand:DI 2 "or_operand" "rI,N")))]
  ""
  "@
   bis %r1,%2,%0
   ornot %r1,%N2,%0"
  [(set_attr "type" "ilog")])

(define_insn "one_cmpldi2"
  [(set (match_operand:DI 0 "register_operand" "=r")
        (not:DI (match_operand:DI 1 "reg_or_8bit_operand" "rI")))]
  ""
  "ornot $31,%1,%0"
  [(set_attr "type" "ilog")])

(define_insn ""
  [(set (match_operand:DI 0 "register_operand" "=r")
        (ior:DI (not:DI (match_operand:DI 1 "reg_or_8bit_operand" "rI"))
                (match_operand:DI 2 "reg_or_0_operand" "rJ")))]
  ""
  "ornot %r2,%1,%0"
  [(set_attr "type" "ilog")])

(define_insn "xordi3"
  [(set (match_operand:DI 0 "register_operand" "=r,r")
        (xor:DI (match_operand:DI 1 "reg_or_0_operand" "%rJ,rJ")
                (match_operand:DI 2 "or_operand" "rI,N")))]
  ""
  "@
   xor %r1,%2,%0
   eqv %r1,%N2,%0"
  [(set_attr "type" "ilog")])

(define_insn ""
  [(set (match_operand:DI 0 "register_operand" "=r")
        (not:DI (xor:DI (match_operand:DI 1 "register_operand" "%rJ")
                        (match_operand:DI 2 "register_operand" "rI"))))]
  ""
  "eqv %r1,%2,%0"
  [(set_attr "type" "ilog")])
\f
;; Handle the FFS insn iff we support CIX. 

(define_expand "ffsdi2"
  [(set (match_dup 2)
        (unspec:DI [(match_operand:DI 1 "register_operand" "")] 1))
   (set (match_dup 3)
        (plus:DI (match_dup 2) (const_int 1)))
   (set (match_operand:DI 0 "register_operand" "")
        (if_then_else:DI (eq (match_dup 1) (const_int 0))
                         (const_int 0) (match_dup 3)))]
  "TARGET_CIX"
  "
{
  operands[2] = gen_reg_rtx (DImode);
  operands[3] = gen_reg_rtx (DImode);
}")

(define_insn ""
  [(set (match_operand:DI 0 "register_operand" "=r")
        (unspec:DI [(match_operand:DI 1 "register_operand" "r")] 1))]
  "TARGET_CIX"
  "cttz %1,%0"
  ; EV6 calls all mvi and cttz/ctlz/popc class imisc, so just 
  ; reuse the existing type name.
  [(set_attr "type" "mvi")])
\f
;; Next come the shifts and the various extract and insert operations.

(define_insn "ashldi3"
  [(set (match_operand:DI 0 "register_operand" "=r,r")
        (ashift:DI (match_operand:DI 1 "reg_or_0_operand" "rJ,rJ")
                   (match_operand:DI 2 "reg_or_6bit_operand" "P,rS")))]
  ""
  "*
{
  switch (which_alternative)
    {
    case 0:
      if (operands[2] == const1_rtx)
        return \"addq %r1,%r1,%0\";
      else
        return \"s%P2addq %r1,0,%0\";
    case 1:
      return \"sll %r1,%2,%0\";
    default:
      abort();
    }
}"
  [(set_attr "type" "iadd,shift")])

;; ??? The following pattern is made by combine, but earlier phases
;; (specifically flow) can't handle it.  This occurs in jump.c.  Deal
;; with this in a better way at some point.
;;(define_insn ""
;;  [(set (match_operand:DI 0 "register_operand" "=r")
;;      (sign_extend:DI
;;       (subreg:SI (ashift:DI (match_operand:DI 1 "reg_or_0_operand" "rJ")
;;                             (match_operand:DI 2 "const_int_operand" "P"))
;;                  0)))]
;;  "INTVAL (operands[2]) >= 1 && INTVAL (operands[2]) <= 3"
;;  "*
;;{
;;  if (operands[2] == const1_rtx)
;;    return \"addl %r1,%r1,%0\";
;;  else
;;    return \"s%P2addl %r1,0,%0\";
;; }"
;;  [(set_attr "type" "iadd")])
                          
(define_insn "lshrdi3"
  [(set (match_operand:DI 0 "register_operand" "=r")
        (lshiftrt:DI (match_operand:DI 1 "reg_or_0_operand" "rJ")
                     (match_operand:DI 2 "reg_or_6bit_operand" "rS")))]
  ""
  "srl %r1,%2,%0"
  [(set_attr "type" "shift")])

(define_insn "ashrdi3"
  [(set (match_operand:DI 0 "register_operand" "=r")
        (ashiftrt:DI (match_operand:DI 1 "reg_or_0_operand" "rJ")
                     (match_operand:DI 2 "reg_or_6bit_operand" "rS")))]
  ""
  "sra %r1,%2,%0"
  [(set_attr "type" "shift")])

(define_expand "extendqihi2"
  [(set (match_dup 2)
        (ashift:DI (match_operand:QI 1 "some_operand" "")
                   (const_int 56)))
   (set (match_operand:HI 0 "register_operand" "")
        (ashiftrt:DI (match_dup 2)
                     (const_int 56)))]
  ""
  "
{
  if (TARGET_BWX)
    {
      emit_insn (gen_extendqihi2x (operands[0],
                                   force_reg (QImode, operands[1])));
      DONE;
    }
 
 /* If we have an unaligned MEM, extend to DImode (which we do
     specially) and then copy to the result.  */
  if (unaligned_memory_operand (operands[1], HImode))
    {
      rtx temp = gen_reg_rtx (DImode);

      emit_insn (gen_extendqidi2 (temp, operands[1]));
      emit_move_insn (operands[0], gen_lowpart (HImode, temp));
      DONE;
    }

  operands[0] = gen_lowpart (DImode, operands[0]);
  operands[1] = gen_lowpart (DImode, force_reg (QImode, operands[1]));
  operands[2] = gen_reg_rtx (DImode);
}")

(define_insn "extendqidi2x"
  [(set (match_operand:DI 0 "register_operand" "=r")
        (sign_extend:DI (match_operand:QI 1 "register_operand" "r")))]
  "TARGET_BWX"
  "sextb %1,%0"
  [(set_attr "type" "shift")])

(define_insn "extendhidi2x"
  [(set (match_operand:DI 0 "register_operand" "=r")
        (sign_extend:DI (match_operand:HI 1 "register_operand" "r")))]
  "TARGET_BWX"
  "sextw %1,%0"
  [(set_attr "type" "shift")])

(define_insn "extendqisi2x"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (sign_extend:SI (match_operand:QI 1 "register_operand" "r")))]
  "TARGET_BWX"
  "sextb %1,%0"
  [(set_attr "type" "shift")])

(define_insn "extendhisi2x"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (sign_extend:SI (match_operand:HI 1 "register_operand" "r")))]
  "TARGET_BWX"
  "sextw %1,%0"
  [(set_attr "type" "shift")])

(define_insn "extendqihi2x"
  [(set (match_operand:HI 0 "register_operand" "=r")
        (sign_extend:HI (match_operand:QI 1 "register_operand" "r")))]
  "TARGET_BWX"
  "sextb %1,%0"
  [(set_attr "type" "shift")])

(define_expand "extendqisi2"
  [(set (match_dup 2)
        (ashift:DI (match_operand:QI 1 "some_operand" "")
                   (const_int 56)))
   (set (match_operand:SI 0 "register_operand" "")
        (ashiftrt:DI (match_dup 2)
                     (const_int 56)))]
  ""
  "
{
  if (TARGET_BWX)
    {
      emit_insn (gen_extendqisi2x (operands[0],
                                   force_reg (QImode, operands[1])));
      DONE;
    }

  /* If we have an unaligned MEM, extend to a DImode form of
     the result (which we do specially).  */
  if (unaligned_memory_operand (operands[1], QImode))
    {
      rtx temp = gen_reg_rtx (DImode);

      emit_insn (gen_extendqidi2 (temp, operands[1]));
      emit_move_insn (operands[0], gen_lowpart (SImode, temp));
      DONE;
    }

  operands[0] = gen_lowpart (DImode, operands[0]);
  operands[1] = gen_lowpart (DImode, force_reg (QImode, operands[1]));
  operands[2] = gen_reg_rtx (DImode);
}")

(define_expand "extendqidi2"
  [(set (match_dup 2)
        (ashift:DI (match_operand:QI 1 "some_operand" "")
                   (const_int 56)))
   (set (match_operand:DI 0 "register_operand" "")
        (ashiftrt:DI (match_dup 2)
                     (const_int 56)))]
  ""
  "
{
  if (TARGET_BWX)
    {
      emit_insn (gen_extendqidi2x (operands[0],
                                   force_reg (QImode, operands[1])));
      DONE;
    }

  if (unaligned_memory_operand (operands[1], QImode))
    {
      rtx seq
        = gen_unaligned_extendqidi (operands[0],
                                    get_unaligned_address (operands[1], 1));

      alpha_set_memflags (seq, operands[1]);
      emit_insn (seq);
      DONE;
    }

  operands[1] = gen_lowpart (DImode, force_reg (QImode, operands[1]));
  operands[2] = gen_reg_rtx (DImode);
}")

(define_expand "extendhisi2"
  [(set (match_dup 2)
        (ashift:DI (match_operand:HI 1 "some_operand" "")
                   (const_int 48)))
   (set (match_operand:SI 0 "register_operand" "")
        (ashiftrt:DI (match_dup 2)
                     (const_int 48)))]
  ""
  "
{
  if (TARGET_BWX)
    {
      emit_insn (gen_extendhisi2x (operands[0],
                                   force_reg (HImode, operands[1])));
      DONE;
    }

  /* If we have an unaligned MEM, extend to a DImode form of
     the result (which we do specially).  */
  if (unaligned_memory_operand (operands[1], HImode))
    {
      rtx temp = gen_reg_rtx (DImode);

      emit_insn (gen_extendhidi2 (temp, operands[1]));
      emit_move_insn (operands[0], gen_lowpart (SImode, temp));
      DONE;
    }

  operands[0] = gen_lowpart (DImode, operands[0]);
  operands[1] = gen_lowpart (DImode, force_reg (HImode, operands[1]));
  operands[2] = gen_reg_rtx (DImode);
}")

(define_expand "extendhidi2"
  [(set (match_dup 2)
        (ashift:DI (match_operand:HI 1 "some_operand" "")
                   (const_int 48)))
   (set (match_operand:DI 0 "register_operand" "")
        (ashiftrt:DI (match_dup 2)
                     (const_int 48)))]
  ""
  "
{
  if (TARGET_BWX)
    {
      emit_insn (gen_extendhidi2x (operands[0],
                                   force_reg (HImode, operands[1])));
      DONE;
    }

  if (unaligned_memory_operand (operands[1], HImode))
    {
      rtx seq
        = gen_unaligned_extendhidi (operands[0],
                                    get_unaligned_address (operands[1], 2));

      alpha_set_memflags (seq, operands[1]);
      emit_insn (seq);
      DONE;
    }

  operands[1] = gen_lowpart (DImode, force_reg (HImode, operands[1]));
  operands[2] = gen_reg_rtx (DImode);
}")

;; Here's how we sign extend an unaligned byte and halfword.  Doing this
;; as a pattern saves one instruction.  The code is similar to that for
;; the unaligned loads (see below).
;;
;; Operand 1 is the address + 1 (+2 for HI), operand 0 is the result.
(define_expand "unaligned_extendqidi"
  [(set (match_dup 2) (match_operand:DI 1 "address_operand" ""))
   (set (match_dup 3)
        (mem:DI (and:DI (plus:DI (match_dup 2) (const_int -1))
                        (const_int -8))))
   (set (match_dup 4)
        (ashift:DI (match_dup 3)
                   (minus:DI (const_int 64)
                             (ashift:DI
                              (and:DI (match_dup 2) (const_int 7))
                              (const_int 3)))))
   (set (subreg:DI (match_operand:QI 0 "register_operand" "") 0)
        (ashiftrt:DI (match_dup 4) (const_int 56)))]
  ""
  "
{ operands[2] = gen_reg_rtx (DImode);
  operands[3] = gen_reg_rtx (DImode);
  operands[4] = gen_reg_rtx (DImode);
}")

(define_expand "unaligned_extendhidi"
  [(set (match_dup 2) (match_operand:DI 1 "address_operand" ""))
   (set (match_dup 3)
        (mem:DI (and:DI (plus:DI (match_dup 2) (const_int -2))
                        (const_int -8))))
   (set (match_dup 4)
        (ashift:DI (match_dup 3)
                   (minus:DI (const_int 64)
                             (ashift:DI
                              (and:DI (match_dup 2) (const_int 7))
                              (const_int 3)))))
   (set (subreg:DI (match_operand:QI 0 "register_operand" "") 0)
        (ashiftrt:DI (match_dup 4) (const_int 48)))]
  ""
  "
{ operands[2] = gen_reg_rtx (DImode);
  operands[3] = gen_reg_rtx (DImode);
  operands[4] = gen_reg_rtx (DImode);
}")

(define_insn ""
  [(set (match_operand:DI 0 "register_operand" "=r")
        (zero_extract:DI (match_operand:DI 1 "reg_or_0_operand" "rJ")
                         (match_operand:DI 2 "mode_width_operand" "n")
                         (match_operand:DI 3 "mul8_operand" "I")))]
  ""
  "ext%M2l %r1,%s3,%0"
  [(set_attr "type" "shift")])

(define_insn "extxl"
  [(set (match_operand:DI 0 "register_operand" "=r")
        (zero_extract:DI (match_operand:DI 1 "reg_or_0_operand" "rJ")
                         (match_operand:DI 2 "mode_width_operand" "n")
                         (ashift:DI (match_operand:DI 3 "reg_or_8bit_operand" "rI")
                                    (const_int 3))))]
  ""
  "ext%M2l %r1,%3,%0"
  [(set_attr "type" "shift")])

;; Combine has some strange notion of preserving existing undefined behaviour
;; in shifts larger than a word size.  So capture these patterns that it 
;; should have turned into zero_extracts.

(define_insn ""
  [(set (match_operand:DI 0 "register_operand" "=r")
        (and:DI (lshiftrt:DI (match_operand:DI 1 "reg_or_0_operand" "rJ")
                  (ashift:DI (match_operand:DI 2 "reg_or_8bit_operand" "rI")
                             (const_int 3)))
             (match_operand:DI 3 "mode_mask_operand" "n")))]
  ""
  "ext%U3l %1,%2,%0"
  [(set_attr "type" "shift")])

(define_insn ""
  [(set (match_operand:DI 0 "register_operand" "=r")
        (lshiftrt:DI (match_operand:DI 1 "reg_or_0_operand" "rJ")
          (ashift:DI (match_operand:DI 2 "reg_or_8bit_operand" "rI")
                     (const_int 3))))]
  ""
  "extql %1,%2,%0"
  [(set_attr "type" "shift")])

(define_insn "extqh"
  [(set (match_operand:DI 0 "register_operand" "=r")
        (ashift:DI
         (match_operand:DI 1 "reg_or_0_operand" "rJ")
          (minus:DI (const_int 64)
                    (ashift:DI
                     (and:DI
                      (match_operand:DI 2 "reg_or_8bit_operand" "rI")
                      (const_int 7))
                     (const_int 3)))))]
  ""
  "extqh %r1,%2,%0"
  [(set_attr "type" "shift")])

(define_insn "extlh"
  [(set (match_operand:DI 0 "register_operand" "=r")
        (ashift:DI
         (and:DI (match_operand:DI 1 "reg_or_0_operand" "rJ")
                 (const_int 2147483647))
         (minus:DI (const_int 64)
                    (ashift:DI
                     (and:DI
                      (match_operand:DI 2 "reg_or_8bit_operand" "rI")
                      (const_int 7))
                     (const_int 3)))))]
  ""
  "extlh %r1,%2,%0"
  [(set_attr "type" "shift")])

(define_insn "extwh"
  [(set (match_operand:DI 0 "register_operand" "=r")
        (ashift:DI
         (and:DI (match_operand:DI 1 "reg_or_0_operand" "rJ")
                 (const_int 65535))
         (minus:DI (const_int 64)
                    (ashift:DI
                     (and:DI
                      (match_operand:DI 2 "reg_or_8bit_operand" "rI")
                      (const_int 7))
                     (const_int 3)))))]
  ""
  "extwh %r1,%2,%0"
  [(set_attr "type" "shift")])

;; This converts an extXl into an extXh with an appropriate adjustment
;; to the address calculation.

;;(define_split
;;  [(set (match_operand:DI 0 "register_operand" "")
;;      (ashift:DI (zero_extract:DI (match_operand:DI 1 "register_operand" "")
;;                                  (match_operand:DI 2 "mode_width_operand" "")
;;                                  (ashift:DI (match_operand:DI 3 "" "")
;;                                             (const_int 3)))
;;                 (match_operand:DI 4 "const_int_operand" "")))
;;   (clobber (match_operand:DI 5 "register_operand" ""))]
;;  "INTVAL (operands[4]) == 64 - INTVAL (operands[2])"
;;  [(set (match_dup 5) (match_dup 6))
;;   (set (match_dup 0)
;;      (ashift:DI (zero_extract:DI (match_dup 1) (match_dup 2)
;;                                  (ashift:DI (plus:DI (match_dup 5)
;;                                                      (match_dup 7))
;;                                             (const_int 3)))
;;                 (match_dup 4)))]
;;  "
;;{
;;  operands[6] = plus_constant (operands[3], 
;;                             INTVAL (operands[2]) / BITS_PER_UNIT);
;;  operands[7] = GEN_INT (- INTVAL (operands[2]) / BITS_PER_UNIT);
;;}")
  
(define_insn ""
  [(set (match_operand:DI 0 "register_operand" "=r")
        (ashift:DI (zero_extend:DI (match_operand:QI 1 "register_operand" "r"))
                   (match_operand:DI 2 "mul8_operand" "I")))]
  ""
  "insbl %1,%s2,%0"
  [(set_attr "type" "shift")])

(define_insn ""
  [(set (match_operand:DI 0 "register_operand" "=r")
        (ashift:DI (zero_extend:DI (match_operand:HI 1 "register_operand" "r"))
                   (match_operand:DI 2 "mul8_operand" "I")))]
  ""
  "inswl %1,%s2,%0"
  [(set_attr "type" "shift")])

(define_insn ""
  [(set (match_operand:DI 0 "register_operand" "=r")
        (ashift:DI (zero_extend:DI (match_operand:SI 1 "register_operand" "r"))
                   (match_operand:DI 2 "mul8_operand" "I")))]
  ""
  "insll %1,%s2,%0"
  [(set_attr "type" "shift")])

(define_insn "insbl"
  [(set (match_operand:DI 0 "register_operand" "=r")
        (ashift:DI (zero_extend:DI (match_operand:QI 1 "register_operand" "r"))
                   (ashift:DI (match_operand:DI 2 "reg_or_8bit_operand" "rI")
                              (const_int 3))))]
  ""
  "insbl %1,%2,%0"
  [(set_attr "type" "shift")])

(define_insn "inswl"
  [(set (match_operand:DI 0 "register_operand" "=r")
        (ashift:DI (zero_extend:DI (match_operand:HI 1 "register_operand" "r"))
                   (ashift:DI (match_operand:DI 2 "reg_or_8bit_operand" "rI")
                              (const_int 3))))]
  ""
  "inswl %1,%2,%0"
  [(set_attr "type" "shift")])

(define_insn "insll"
  [(set (match_operand:DI 0 "register_operand" "=r")
        (ashift:DI (zero_extend:DI (match_operand:SI 1 "register_operand" "r"))
                   (ashift:DI (match_operand:DI 2 "reg_or_8bit_operand" "rI")
                              (const_int 3))))]
  ""
  "insll %1,%2,%0"
  [(set_attr "type" "shift")])

(define_insn "insql"
  [(set (match_operand:DI 0 "register_operand" "=r")
        (ashift:DI (match_operand:DI 1 "register_operand" "r")
                   (ashift:DI (match_operand:DI 2 "reg_or_8bit_operand" "rI")
                              (const_int 3))))]
  ""
  "insql %1,%2,%0"
  [(set_attr "type" "shift")])

;; Combine has this sometimes habit of moving the and outside of the
;; shift, making life more interesting.

(define_insn ""
  [(set (match_operand:DI 0 "register_operand" "=r")
        (and:DI (ashift:DI (match_operand:DI 1 "register_operand" "r")
                           (match_operand:DI 2 "mul8_operand" "I"))
                (match_operand:DI 3 "immediate_operand" "i")))]
  "HOST_BITS_PER_WIDE_INT == 64
   && GET_CODE (operands[3]) == CONST_INT
   && (((unsigned HOST_WIDE_INT) 0xff << INTVAL (operands[2])
        == (unsigned HOST_WIDE_INT) INTVAL (operands[3]))
       || ((unsigned HOST_WIDE_INT) 0xffff << INTVAL (operands[2])
        == (unsigned HOST_WIDE_INT) INTVAL (operands[3]))
       || ((unsigned HOST_WIDE_INT) 0xffffffff << INTVAL (operands[2])
        == (unsigned HOST_WIDE_INT) INTVAL (operands[3])))"
  "*
{
#if HOST_BITS_PER_WIDE_INT == 64
  if ((unsigned HOST_WIDE_INT) 0xff << INTVAL (operands[2])
      == (unsigned HOST_WIDE_INT) INTVAL (operands[3]))
    return \"insbl %1,%s2,%0\";
  if ((unsigned HOST_WIDE_INT) 0xffff << INTVAL (operands[2])
      == (unsigned HOST_WIDE_INT) INTVAL (operands[3]))
    return \"inswl %1,%s2,%0\";
  if ((unsigned HOST_WIDE_INT) 0xffffffff << INTVAL (operands[2])
      == (unsigned HOST_WIDE_INT) INTVAL (operands[3]))
    return \"insll %1,%s2,%0\";
#endif
  abort();
}"
  [(set_attr "type" "shift")])

;; We do not include the insXh insns because they are complex to express
;; and it does not appear that we would ever want to generate them.
;;
;; Since we need them for block moves, though, cop out and use unspec.

(define_insn "insxh"
  [(set (match_operand:DI 0 "register_operand" "=r")
        (unspec:DI [(match_operand:DI 1 "register_operand" "r")
                    (match_operand:DI 2 "mode_width_operand" "n")
                    (match_operand:DI 3 "reg_or_8bit_operand" "rI")] 2))]
  ""
  "ins%M2h %1,%3,%0"
  [(set_attr "type" "shift")])

(define_insn "mskxl"
  [(set (match_operand:DI 0 "register_operand" "=r")
        (and:DI (not:DI (ashift:DI
                         (match_operand:DI 2 "mode_mask_operand" "n")
                         (ashift:DI
                          (match_operand:DI 3 "reg_or_8bit_operand" "rI")
                          (const_int 3))))
                (match_operand:DI 1 "reg_or_0_operand" "rJ")))]
  ""
  "msk%U2l %r1,%3,%0"
  [(set_attr "type" "shift")])

;; We do not include the mskXh insns because it does not appear we would
;; ever generate one.
;;
;; Again, we do for block moves and we use unspec again.

(define_insn "mskxh"
  [(set (match_operand:DI 0 "register_operand" "=r")
        (unspec:DI [(match_operand:DI 1 "register_operand" "r")
                    (match_operand:DI 2 "mode_width_operand" "n")
                    (match_operand:DI 3 "reg_or_8bit_operand" "rI")] 3))]
  ""
  "msk%M2h %1,%3,%0"
  [(set_attr "type" "shift")])

;; Prefer AND + NE over LSHIFTRT + AND.

(define_insn_and_split "*ze_and_ne"
  [(set (match_operand:DI 0 "register_operand" "=r")
        (zero_extract:DI (match_operand:DI 1 "reg_or_0_operand" "rJ")
                         (const_int 1)
                         (match_operand 2 "const_int_operand" "I")))]
  "(unsigned HOST_WIDE_INT) INTVAL (operands[2]) < 8"
  "#"
  ""
  [(set (match_dup 0)
        (and:DI (match_dup 1) (match_dup 3)))
   (set (match_dup 0)
        (ne:DI (match_dup 0) (const_int 0)))]
  "operands[3] = GEN_INT (1 << INTVAL (operands[2]));")
\f
;; Floating-point operations.  All the double-precision insns can extend
;; from single, so indicate that.  The exception are the ones that simply
;; play with the sign bits; it's not clear what to do there.

(define_insn "abssf2"
  [(set (match_operand:SF 0 "register_operand" "=f")
        (abs:SF (match_operand:SF 1 "reg_or_fp0_operand" "fG")))]
  "TARGET_FP"
  "cpys $f31,%R1,%0"
  [(set_attr "type" "fcpys")])

(define_insn "*nabssf2"
  [(set (match_operand:SF 0 "register_operand" "=f")
        (neg:SF (abs:SF (match_operand:SF 1 "reg_or_fp0_operand" "fG"))))]
  "TARGET_FP"
  "cpysn $f31,%R1,%0"
  [(set_attr "type" "fadd")])

(define_insn "absdf2"
  [(set (match_operand:DF 0 "register_operand" "=f")
        (abs:DF (match_operand:DF 1 "reg_or_fp0_operand" "fG")))]
  "TARGET_FP"
  "cpys $f31,%R1,%0"
  [(set_attr "type" "fcpys")])

(define_insn "*nabsdf2"
  [(set (match_operand:DF 0 "register_operand" "=f")
        (neg:DF (abs:DF (match_operand:DF 1 "reg_or_fp0_operand" "fG"))))]
  "TARGET_FP"
  "cpysn $f31,%R1,%0"
  [(set_attr "type" "fadd")])

(define_expand "abstf2"
  [(parallel [(set (match_operand:TF 0 "register_operand" "")
                   (neg:TF (match_operand:TF 1 "reg_or_fp0_operand" "")))
              (use (match_dup 2))])]
  "TARGET_HAS_XFLOATING_LIBS"
  "
{
#if HOST_BITS_PER_WIDE_INT >= 64
  operands[2] = force_reg (DImode, GEN_INT (0x8000000000000000));
#else
  operands[2] = force_reg (DImode, immed_double_const (0, 0x80000000, DImode));
#endif
}")

(define_insn ""
  [(set (match_operand:TF 0 "register_operand" "=r")
        (abs:TF (match_operand:TF 1 "reg_or_fp0_operand" "rG")))
   (use (match_operand:DI 2 "register_operand" "=r"))]
  "TARGET_HAS_XFLOATING_LIBS"
  "#")

(define_split
  [(set (match_operand:TF 0 "register_operand" "")
        (abs:TF (match_operand:TF 1 "reg_or_fp0_operand" "")))
   (use (match_operand:DI 4 "register_operand" ""))]
  "reload_completed"
  [(const_int 0)]
  "
{
  int move;
  rtx tmp;

  alpha_split_tfmode_pair (operands);

  move = 1;
  if (rtx_equal_p (operands[0], operands[2]))
    move = 0;
  else if (rtx_equal_p (operands[1], operands[2]))
    move = -1;

  if (move < 0)
    emit_move_insn (operands[0], operands[2]);

  tmp = gen_rtx_NOT (DImode, operands[4]);
  tmp = gen_rtx_AND (DImode, tmp, operands[3]);
  emit_insn (gen_rtx_SET (VOIDmode, operands[1], tmp));
        
  if (move > 0)
    emit_move_insn (operands[0], operands[2]);
  DONE;
}")

(define_insn "negsf2"
  [(set (match_operand:SF 0 "register_operand" "=f")
        (neg:SF (match_operand:SF 1 "reg_or_fp0_operand" "fG")))]
  "TARGET_FP"
  "cpysn %R1,%R1,%0"
  [(set_attr "type" "fadd")])

(define_insn "negdf2"
  [(set (match_operand:DF 0 "register_operand" "=f")
        (neg:DF (match_operand:DF 1 "reg_or_fp0_operand" "fG")))]
  "TARGET_FP"
  "cpysn %R1,%R1,%0"
  [(set_attr "type" "fadd")])

(define_expand "negtf2"
  [(parallel [(set (match_operand:TF 0 "register_operand" "")
                   (neg:TF (match_operand:TF 1 "reg_or_fp0_operand" "")))
              (use (match_dup 2))])]
  "TARGET_HAS_XFLOATING_LIBS"
  "
{
#if HOST_BITS_PER_WIDE_INT >= 64
  operands[2] = force_reg (DImode, GEN_INT (0x8000000000000000));
#else
  operands[2] = force_reg (DImode, immed_double_const (0, 0x80000000, DImode));
#endif
}")

(define_insn ""
  [(set (match_operand:TF 0 "register_operand" "=r")
        (neg:TF (match_operand:TF 1 "reg_or_fp0_operand" "rG")))
   (use (match_operand:DI 2 "register_operand" "=r"))]
  "TARGET_HAS_XFLOATING_LIBS"
  "#")

(define_split
  [(set (match_operand:TF 0 "register_operand" "")
        (neg:TF (match_operand:TF 1 "reg_or_fp0_operand" "")))
   (use (match_operand:DI 4 "register_operand" ""))]
  "reload_completed"
  [(const_int 0)]
  "
{
  int move;

  alpha_split_tfmode_pair (operands);

  move = 1;
  if (rtx_equal_p (operands[0], operands[2]))
    move = 0;
  else if (rtx_equal_p (operands[1], operands[2]))
    move = -1;

  if (move < 0)
    emit_move_insn (operands[0], operands[2]);

  emit_insn (gen_xordi3 (operands[1], operands[3], operands[4]));
        
  if (move > 0)
    emit_move_insn (operands[0], operands[2]);
  DONE;
}")

(define_insn ""
  [(set (match_operand:SF 0 "register_operand" "=&f")
        (plus:SF (match_operand:SF 1 "reg_or_fp0_operand" "%fG")
                 (match_operand:SF 2 "reg_or_fp0_operand" "fG")))]
  "TARGET_FP && alpha_fptm >= ALPHA_FPTM_SU"
  "add%,%)%& %R1,%R2,%0"
  [(set_attr "type" "fadd")
   (set_attr "trap" "yes")])

(define_insn "addsf3"
  [(set (match_operand:SF 0 "register_operand" "=f")
        (plus:SF (match_operand:SF 1 "reg_or_fp0_operand" "%fG")
                 (match_operand:SF 2 "reg_or_fp0_operand" "fG")))]
  "TARGET_FP"
  "add%,%)%& %R1,%R2,%0"
  [(set_attr "type" "fadd")
   (set_attr "trap" "yes")])

(define_insn ""
  [(set (match_operand:DF 0 "register_operand" "=&f")
        (plus:DF (match_operand:DF 1 "reg_or_fp0_operand" "%fG")
                 (match_operand:DF 2 "reg_or_fp0_operand" "fG")))]
  "TARGET_FP && alpha_fptm >= ALPHA_FPTM_SU"
  "add%-%)%& %R1,%R2,%0"
  [(set_attr "type" "fadd")
   (set_attr "trap" "yes")])

(define_insn "adddf3"
  [(set (match_operand:DF 0 "register_operand" "=f")
        (plus:DF (match_operand:DF 1 "reg_or_fp0_operand" "%fG")
                 (match_operand:DF 2 "reg_or_fp0_operand" "fG")))]
  "TARGET_FP"
  "add%-%)%& %R1,%R2,%0"
  [(set_attr "type" "fadd")
   (set_attr "trap" "yes")])

(define_insn ""
  [(set (match_operand:DF 0 "register_operand" "=f")
        (plus:DF (float_extend:DF
                  (match_operand:SF 1 "reg_or_fp0_operand" "fG"))
                 (match_operand:DF 2 "reg_or_fp0_operand" "fG")))]
  "TARGET_FP && alpha_fptm < ALPHA_FPTM_SU"
  "add%-%)%& %R1,%R2,%0"
  [(set_attr "type" "fadd")
   (set_attr "trap" "yes")])

(define_insn ""
  [(set (match_operand:DF 0 "register_operand" "=f")
        (plus:DF (float_extend:DF
                  (match_operand:SF 1 "reg_or_fp0_operand" "%fG"))
                 (float_extend:DF
                  (match_operand:SF 2 "reg_or_fp0_operand" "fG"))))]
  "TARGET_FP && alpha_fptm < ALPHA_FPTM_SU"
  "add%-%)%& %R1,%R2,%0"
  [(set_attr "type" "fadd")
   (set_attr "trap" "yes")])

(define_expand "addtf3"
  [(use (match_operand 0 "register_operand" ""))
   (use (match_operand 1 "general_operand" ""))
   (use (match_operand 2 "general_operand" ""))]
  "TARGET_HAS_XFLOATING_LIBS"
  "alpha_emit_xfloating_arith (PLUS, operands); DONE;")

;; Define conversion operators between DFmode and SImode, using the cvtql
;; instruction.  To allow combine et al to do useful things, we keep the
;; operation as a unit until after reload, at which point we split the
;; instructions.
;;
;; Note that we (attempt to) only consider this optimization when the
;; ultimate destination is memory.  If we will be doing further integer
;; processing, it is cheaper to do the truncation in the int regs.

(define_insn "*cvtql"
  [(set (match_operand:SI 0 "register_operand" "=f")
        (unspec:SI [(match_operand:DI 1 "reg_or_fp0_operand" "fG")] 5))]
  "TARGET_FP"
  "cvtql%` %R1,%0"
  [(set_attr "type" "fadd")
   (set_attr "trap" "yes")])

(define_split
  [(set (match_operand:SI 0 "memory_operand" "")
        (subreg:SI (fix:DI (match_operand:DF 1 "reg_or_fp0_operand" "")) 0))
   (clobber (match_scratch:DI 2 ""))
   (clobber (match_scratch:SI 3 ""))]
  "TARGET_FP && reload_completed"
  [(set (match_dup 2) (fix:DI (match_dup 1)))
   (set (match_dup 3) (unspec:SI [(match_dup 2)] 5))
   (set (match_dup 0) (match_dup 3))]
  "")

(define_split
  [(set (match_operand:SI 0 "memory_operand" "")
        (subreg:SI (fix:DI (match_operand:DF 1 "reg_or_fp0_operand" "")) 0))
   (clobber (match_scratch:DI 2 ""))]
  "TARGET_FP && reload_completed"
  [(set (match_dup 2) (fix:DI (match_dup 1)))
   (set (match_dup 3) (unspec:SI [(match_dup 2)] 5))
   (set (match_dup 0) (match_dup 3))]
  ;; Due to REG_CANNOT_CHANGE_SIZE issues, we cannot simply use SUBREG.
  "operands[3] = gen_rtx_REG (SImode, REGNO (operands[2]));")

(define_insn ""
  [(set (match_operand:SI 0 "memory_operand" "=m")
        (subreg:SI (fix:DI (match_operand:DF 1 "reg_or_fp0_operand" "fG")) 0))
   (clobber (match_scratch:DI 2 "=&f"))
   (clobber (match_scratch:SI 3 "=&f"))]
  "TARGET_FP && alpha_fptm >= ALPHA_FPTM_SU"
  "#"
  [(set_attr "type" "fadd")
   (set_attr "trap" "yes")])

(define_insn ""
  [(set (match_operand:SI 0 "memory_operand" "=m")
        (subreg:SI (fix:DI (match_operand:DF 1 "reg_or_fp0_operand" "fG")) 0))
   (clobber (match_scratch:DI 2 "=f"))]
  "TARGET_FP && alpha_fptm < ALPHA_FPTM_SU"
  "#"
  [(set_attr "type" "fadd")
   (set_attr "trap" "yes")])

(define_insn ""
  [(set (match_operand:DI 0 "reg_no_subreg_operand" "=&f")
        (fix:DI (match_operand:DF 1 "reg_or_fp0_operand" "fG")))]
  "TARGET_FP && alpha_fptm >= ALPHA_FPTM_SU"
  "cvt%-q%(c %R1,%0"
  [(set_attr "type" "fadd")
   (set_attr "trap" "yes")])

(define_insn "fix_truncdfdi2"
  [(set (match_operand:DI 0 "reg_no_subreg_operand" "=f")
        (fix:DI (match_operand:DF 1 "reg_or_fp0_operand" "fG")))]
  "TARGET_FP"
  "cvt%-q%(c %R1,%0"
  [(set_attr "type" "fadd")
   (set_attr "trap" "yes")])

;; Likewise between SFmode and SImode.

(define_split
  [(set (match_operand:SI 0 "memory_operand" "")
        (subreg:SI (fix:DI (float_extend:DF
                 (match_operand:SF 1 "reg_or_fp0_operand" ""))) 0))
   (clobber (match_scratch:DI 2 ""))
   (clobber (match_scratch:SI 3 ""))]
  "TARGET_FP && reload_completed"
  [(set (match_dup 2) (fix:DI (float_extend:DF (match_dup 1))))
   (set (match_dup 3) (unspec:SI [(match_dup 2)] 5))
   (set (match_dup 0) (match_dup 3))]
  "")

(define_split
  [(set (match_operand:SI 0 "memory_operand" "")
        (subreg:SI (fix:DI (float_extend:DF
                 (match_operand:SF 1 "reg_or_fp0_operand" ""))) 0))
   (clobber (match_scratch:DI 2 ""))]
  "TARGET_FP && reload_completed"
  [(set (match_dup 2) (fix:DI (float_extend:DF (match_dup 1))))
   (set (match_dup 3) (unspec:SI [(match_dup 2)] 5))
   (set (match_dup 0) (match_dup 3))]
  ;; Due to REG_CANNOT_CHANGE_SIZE issues, we cannot simply use SUBREG.
  "operands[3] = gen_rtx_REG (SImode, REGNO (operands[2]));")

(define_insn ""
  [(set (match_operand:SI 0 "memory_operand" "=m")
        (subreg:SI (fix:DI (float_extend:DF
                 (match_operand:SF 1 "reg_or_fp0_operand" "fG"))) 0))
   (clobber (match_scratch:DI 2 "=&f"))
   (clobber (match_scratch:SI 3 "=&f"))]
  "TARGET_FP && alpha_fptm >= ALPHA_FPTM_SU"
  "#"
  [(set_attr "type" "fadd")
   (set_attr "trap" "yes")])

(define_insn ""
  [(set (match_operand:SI 0 "memory_operand" "=m")
        (subreg:SI (fix:DI (float_extend:DF
                 (match_operand:SF 1 "reg_or_fp0_operand" "fG"))) 0))
   (clobber (match_scratch:DI 2 "=f"))]
  "TARGET_FP && alpha_fptm < ALPHA_FPTM_SU"
  "#"
  [(set_attr "type" "fadd")
   (set_attr "trap" "yes")])

(define_insn ""
  [(set (match_operand:DI 0 "reg_no_subreg_operand" "=&f")
        (fix:DI (float_extend:DF
                 (match_operand:SF 1 "reg_or_fp0_operand" "fG"))))]
  "TARGET_FP && alpha_fptm >= ALPHA_FPTM_SU"
  "cvt%-q%(c %R1,%0"
  [(set_attr "type" "fadd")
   (set_attr "trap" "yes")])

(define_insn "fix_truncsfdi2"
  [(set (match_operand:DI 0 "reg_no_subreg_operand" "=f")
        (fix:DI (float_extend:DF
                 (match_operand:SF 1 "reg_or_fp0_operand" "fG"))))]
  "TARGET_FP"
  "cvt%-q%(c %R1,%0"
  [(set_attr "type" "fadd")
   (set_attr "trap" "yes")])

(define_expand "fix_trunctfdi2"
  [(use (match_operand:DI 0 "register_operand" ""))
   (use (match_operand:TF 1 "general_operand" ""))]
  "TARGET_HAS_XFLOATING_LIBS"
  "alpha_emit_xfloating_cvt (FIX, operands); DONE;")

(define_insn ""
  [(set (match_operand:SF 0 "register_operand" "=&f")
        (float:SF (match_operand:DI 1 "reg_no_subreg_operand" "f")))]
  "TARGET_FP && alpha_fptm >= ALPHA_FPTM_SU"
  "cvtq%,%+%& %1,%0"
  [(set_attr "type" "fadd")
   (set_attr "trap" "yes")])

(define_insn "floatdisf2"
  [(set (match_operand:SF 0 "register_operand" "=f")
        (float:SF (match_operand:DI 1 "reg_no_subreg_operand" "f")))]
  "TARGET_FP"
  "cvtq%,%+%& %1,%0"
  [(set_attr "type" "fadd")
   (set_attr "trap" "yes")])

(define_insn ""
  [(set (match_operand:DF 0 "register_operand" "=&f")
        (float:DF (match_operand:DI 1 "reg_no_subreg_operand" "f")))]
  "TARGET_FP && alpha_fptm >= ALPHA_FPTM_SU"
  "cvtq%-%+%& %1,%0"
  [(set_attr "type" "fadd")
   (set_attr "trap" "yes")])

(define_insn "floatdidf2"
  [(set (match_operand:DF 0 "register_operand" "=f")
        (float:DF (match_operand:DI 1 "reg_no_subreg_operand" "f")))]
  "TARGET_FP"
  "cvtq%-%+%& %1,%0"
  [(set_attr "type" "fadd")
   (set_attr "trap" "yes")])

(define_expand "floatditf2"
  [(use (match_operand:TF 0 "register_operand" ""))
   (use (match_operand:DI 1 "general_operand" ""))]
  "TARGET_HAS_XFLOATING_LIBS"
  "alpha_emit_xfloating_cvt (FLOAT, operands); DONE;")

(define_expand "floatunsdisf2"
  [(use (match_operand:SF 0 "register_operand" ""))
   (use (match_operand:DI 1 "register_operand" ""))]
  "TARGET_FP"
  "alpha_emit_floatuns (operands); DONE;")

(define_expand "floatunsdidf2"
  [(use (match_operand:DF 0 "register_operand" ""))
   (use (match_operand:DI 1 "register_operand" ""))]
  "TARGET_FP"
  "alpha_emit_floatuns (operands); DONE;")

(define_expand "floatunsditf2"
  [(use (match_operand:TF 0 "register_operand" ""))
   (use (match_operand:DI 1 "general_operand" ""))]
  "TARGET_HAS_XFLOATING_LIBS"
  "alpha_emit_xfloating_cvt (UNSIGNED_FLOAT, operands); DONE;")

(define_expand "extendsfdf2"
  [(set (match_operand:DF 0 "register_operand" "")
        (float_extend:DF (match_operand:SF 1 "nonimmediate_operand" "")))]
  "TARGET_FP"
  "
{
  if (alpha_fptm >= ALPHA_FPTM_SU)
    operands[1] = force_reg (SFmode, operands[1]);
}")

(define_insn ""
  [(set (match_operand:DF 0 "register_operand" "=&f")
        (float_extend:DF (match_operand:SF 1 "register_operand" "f")))]
  "TARGET_FP && alpha_fptm >= ALPHA_FPTM_SU"
  "cvtsts %1,%0"
  [(set_attr "type" "fadd")
   (set_attr "trap" "yes")])

(define_insn ""
  [(set (match_operand:DF 0 "register_operand" "=f,f,m")
        (float_extend:DF (match_operand:SF 1 "nonimmediate_operand" "f,m,f")))]
  "TARGET_FP && alpha_fptm < ALPHA_FPTM_SU"
  "@
   fmov %1,%0
   ld%, %0,%1
   st%- %1,%0"
  [(set_attr "type" "fcpys,fld,fst")])

(define_expand "extendsftf2"
  [(use (match_operand:TF 0 "register_operand" ""))
   (use (match_operand:SF 1 "general_operand" ""))]
  "TARGET_HAS_XFLOATING_LIBS"
  "
{
  rtx tmp = gen_reg_rtx (DFmode);
  emit_insn (gen_extendsfdf2 (tmp, operands[1]));
  emit_insn (gen_extenddftf2 (operands[0], tmp));
  DONE;
}")

(define_expand "extenddftf2"
  [(use (match_operand:TF 0 "register_operand" ""))
   (use (match_operand:DF 1 "general_operand" ""))]
  "TARGET_HAS_XFLOATING_LIBS"
  "alpha_emit_xfloating_cvt (FLOAT_EXTEND, operands); DONE;")

(define_insn ""
  [(set (match_operand:SF 0 "register_operand" "=&f")
        (float_truncate:SF (match_operand:DF 1 "reg_or_fp0_operand" "fG")))]
  "TARGET_FP && alpha_fptm >= ALPHA_FPTM_SU"
  "cvt%-%,%)%& %R1,%0"
  [(set_attr "type" "fadd")
   (set_attr "trap" "yes")])

(define_insn "truncdfsf2"
  [(set (match_operand:SF 0 "register_operand" "=f")
        (float_truncate:SF (match_operand:DF 1 "reg_or_fp0_operand" "fG")))]
  "TARGET_FP"
  "cvt%-%,%)%& %R1,%0"
  [(set_attr "type" "fadd")
   (set_attr "trap" "yes")])

(define_expand "trunctfdf2"
  [(use (match_operand:DF 0 "register_operand" ""))
   (use (match_operand:TF 1 "general_operand" ""))]
  "TARGET_HAS_XFLOATING_LIBS"
  "alpha_emit_xfloating_cvt (FLOAT_TRUNCATE, operands); DONE;")

(define_expand "trunctfsf2"
  [(use (match_operand:SF 0 "register_operand" ""))
   (use (match_operand:TF 1 "general_operand" ""))]
  "TARGET_FP && TARGET_HAS_XFLOATING_LIBS"
  "
{
  rtx tmpf, sticky, arg, lo, hi;

  tmpf = gen_reg_rtx (DFmode);
  sticky = gen_reg_rtx (DImode);
  arg = copy_to_mode_reg (TFmode, operands[1]);
  lo = gen_lowpart (DImode, arg);
  hi = gen_highpart (DImode, arg);

  /* Convert the low word of the TFmode value into a sticky rounding bit,
     then or it into the low bit of the high word.  This leaves the sticky
     bit at bit 48 of the fraction, which is representable in DFmode,
     which prevents rounding error in the final conversion to SFmode.  */

  emit_insn (gen_rtx_SET (VOIDmode, sticky, 
                          gen_rtx_NE (DImode, lo, const0_rtx)));
  emit_insn (gen_iordi3 (hi, hi, sticky));
  emit_insn (gen_trunctfdf2 (tmpf, arg));
  emit_insn (gen_truncdfsf2 (operands[0], tmpf));
  DONE;
}")

(define_insn ""
  [(set (match_operand:SF 0 "register_operand" "=&f")
        (div:SF (match_operand:SF 1 "reg_or_fp0_operand" "fG")
                (match_operand:SF 2 "reg_or_fp0_operand" "fG")))]
  "TARGET_FP && alpha_fptm >= ALPHA_FPTM_SU"
  "div%,%)%& %R1,%R2,%0"
  [(set_attr "type" "fdiv")
   (set_attr "opsize" "si")
   (set_attr "trap" "yes")])

(define_insn "divsf3"
  [(set (match_operand:SF 0 "register_operand" "=f")
        (div:SF (match_operand:SF 1 "reg_or_fp0_operand" "fG")
                (match_operand:SF 2 "reg_or_fp0_operand" "fG")))]
  "TARGET_FP"
  "div%,%)%& %R1,%R2,%0"
  [(set_attr "type" "fdiv")
   (set_attr "opsize" "si")
   (set_attr "trap" "yes")])

(define_insn ""
  [(set (match_operand:DF 0 "register_operand" "=&f")
        (div:DF (match_operand:DF 1 "reg_or_fp0_operand" "fG")
                (match_operand:DF 2 "reg_or_fp0_operand" "fG")))]
  "TARGET_FP && alpha_fptm >= ALPHA_FPTM_SU"
  "div%-%)%& %R1,%R2,%0"
  [(set_attr "type" "fdiv")
   (set_attr "trap" "yes")])

(define_insn "divdf3"
  [(set (match_operand:DF 0 "register_operand" "=f")
        (div:DF (match_operand:DF 1 "reg_or_fp0_operand" "fG")
                (match_operand:DF 2 "reg_or_fp0_operand" "fG")))]
  "TARGET_FP"
  "div%-%)%& %R1,%R2,%0"
  [(set_attr "type" "fdiv")
   (set_attr "trap" "yes")])

(define_insn ""
  [(set (match_operand:DF 0 "register_operand" "=f")
        (div:DF (float_extend:DF (match_operand:SF 1 "reg_or_fp0_operand" "fG"))
                (match_operand:DF 2 "reg_or_fp0_operand" "fG")))]
  "TARGET_FP && alpha_fptm < ALPHA_FPTM_SU"
  "div%-%)%& %R1,%R2,%0"
  [(set_attr "type" "fdiv")
   (set_attr "trap" "yes")])

(define_insn ""
  [(set (match_operand:DF 0 "register_operand" "=f")
        (div:DF (match_operand:DF 1 "reg_or_fp0_operand" "fG")
                (float_extend:DF
                 (match_operand:SF 2 "reg_or_fp0_operand" "fG"))))]
  "TARGET_FP && alpha_fptm < ALPHA_FPTM_SU"
  "div%-%)%& %R1,%R2,%0"
  [(set_attr "type" "fdiv")
   (set_attr "trap" "yes")])

(define_insn ""
  [(set (match_operand:DF 0 "register_operand" "=f")
        (div:DF (float_extend:DF (match_operand:SF 1 "reg_or_fp0_operand" "fG"))
                (float_extend:DF (match_operand:SF 2 "reg_or_fp0_operand" "fG"))))]
  "TARGET_FP && alpha_fptm < ALPHA_FPTM_SU"
  "div%-%)%& %R1,%R2,%0"
  [(set_attr "type" "fdiv")
   (set_attr "trap" "yes")])

(define_expand "divtf3"
  [(use (match_operand 0 "register_operand" ""))
   (use (match_operand 1 "general_operand" ""))
   (use (match_operand 2 "general_operand" ""))]
  "TARGET_HAS_XFLOATING_LIBS"
  "alpha_emit_xfloating_arith (DIV, operands); DONE;")

(define_insn ""
  [(set (match_operand:SF 0 "register_operand" "=&f")
        (mult:SF (match_operand:SF 1 "reg_or_fp0_operand" "%fG")
                 (match_operand:SF 2 "reg_or_fp0_operand" "fG")))]
  "TARGET_FP && alpha_fptm >= ALPHA_FPTM_SU"
  "mul%,%)%& %R1,%R2,%0"
  [(set_attr "type" "fmul")
   (set_attr "trap" "yes")])

(define_insn "mulsf3"
  [(set (match_operand:SF 0 "register_operand" "=f")
        (mult:SF (match_operand:SF 1 "reg_or_fp0_operand" "%fG")
                 (match_operand:SF 2 "reg_or_fp0_operand" "fG")))]
  "TARGET_FP"
  "mul%,%)%& %R1,%R2,%0"
  [(set_attr "type" "fmul")
   (set_attr "trap" "yes")])

(define_insn ""
  [(set (match_operand:DF 0 "register_operand" "=&f")
        (mult:DF (match_operand:DF 1 "reg_or_fp0_operand" "%fG")
                 (match_operand:DF 2 "reg_or_fp0_operand" "fG")))]
  "TARGET_FP && alpha_fptm >= ALPHA_FPTM_SU"
  "mul%-%)%& %R1,%R2,%0"
  [(set_attr "type" "fmul")
   (set_attr "trap" "yes")])

(define_insn "muldf3"
  [(set (match_operand:DF 0 "register_operand" "=f")
        (mult:DF (match_operand:DF 1 "reg_or_fp0_operand" "%fG")
                 (match_operand:DF 2 "reg_or_fp0_operand" "fG")))]
  "TARGET_FP"
  "mul%-%)%& %R1,%R2,%0"
  [(set_attr "type" "fmul")
   (set_attr "trap" "yes")])

(define_insn ""
  [(set (match_operand:DF 0 "register_operand" "=f")
        (mult:DF (float_extend:DF
                  (match_operand:SF 1 "reg_or_fp0_operand" "fG"))
                 (match_operand:DF 2 "reg_or_fp0_operand" "fG")))]
  "TARGET_FP && alpha_fptm < ALPHA_FPTM_SU"
  "mul%-%)%& %R1,%R2,%0"
  [(set_attr "type" "fmul")
   (set_attr "trap" "yes")])

(define_insn ""
  [(set (match_operand:DF 0 "register_operand" "=f")
        (mult:DF (float_extend:DF
                  (match_operand:SF 1 "reg_or_fp0_operand" "%fG"))
                 (float_extend:DF
                  (match_operand:SF 2 "reg_or_fp0_operand" "fG"))))]
  "TARGET_FP && alpha_fptm < ALPHA_FPTM_SU"
  "mul%-%)%& %R1,%R2,%0"
  [(set_attr "type" "fmul")
   (set_attr "trap" "yes")])

(define_expand "multf3"
  [(use (match_operand 0 "register_operand" ""))
   (use (match_operand 1 "general_operand" ""))
   (use (match_operand 2 "general_operand" ""))]
  "TARGET_HAS_XFLOATING_LIBS"
  "alpha_emit_xfloating_arith (MULT, operands); DONE;")

(define_insn ""
  [(set (match_operand:SF 0 "register_operand" "=&f")
        (minus:SF (match_operand:SF 1 "reg_or_fp0_operand" "fG")
                  (match_operand:SF 2 "reg_or_fp0_operand" "fG")))]
  "TARGET_FP && alpha_fptm >= ALPHA_FPTM_SU"
  "sub%,%)%& %R1,%R2,%0"
  [(set_attr "type" "fadd")
   (set_attr "trap" "yes")])

(define_insn "subsf3"
  [(set (match_operand:SF 0 "register_operand" "=f")
        (minus:SF (match_operand:SF 1 "reg_or_fp0_operand" "fG")
                  (match_operand:SF 2 "reg_or_fp0_operand" "fG")))]
  "TARGET_FP"
  "sub%,%)%& %R1,%R2,%0"
  [(set_attr "type" "fadd")
   (set_attr "trap" "yes")])

(define_insn ""
  [(set (match_operand:DF 0 "register_operand" "=&f")
        (minus:DF (match_operand:DF 1 "reg_or_fp0_operand" "fG")
                  (match_operand:DF 2 "reg_or_fp0_operand" "fG")))]
  "TARGET_FP && alpha_fptm >= ALPHA_FPTM_SU"
  "sub%-%)%& %R1,%R2,%0"
  [(set_attr "type" "fadd")
   (set_attr "trap" "yes")])

(define_insn "subdf3"
  [(set (match_operand:DF 0 "register_operand" "=f")
        (minus:DF (match_operand:DF 1 "reg_or_fp0_operand" "fG")
                  (match_operand:DF 2 "reg_or_fp0_operand" "fG")))]
  "TARGET_FP"
  "sub%-%)%& %R1,%R2,%0"
  [(set_attr "type" "fadd")
   (set_attr "trap" "yes")])

(define_insn ""
  [(set (match_operand:DF 0 "register_operand" "=f")
        (minus:DF (float_extend:DF
                   (match_operand:SF 1 "reg_or_fp0_operand" "fG"))
                  (match_operand:DF 2 "reg_or_fp0_operand" "fG")))]
  "TARGET_FP && alpha_fptm < ALPHA_FPTM_SU"
  "sub%-%)%& %R1,%R2,%0"
  [(set_attr "type" "fadd")
   (set_attr "trap" "yes")])

(define_insn ""
  [(set (match_operand:DF 0 "register_operand" "=f")
        (minus:DF (match_operand:DF 1 "reg_or_fp0_operand" "fG")
                  (float_extend:DF
                   (match_operand:SF 2 "reg_or_fp0_operand" "fG"))))]
  "TARGET_FP && alpha_fptm < ALPHA_FPTM_SU"
  "sub%-%)%& %R1,%R2,%0"
  [(set_attr "type" "fadd")
   (set_attr "trap" "yes")])

(define_insn ""
  [(set (match_operand:DF 0 "register_operand" "=f")
        (minus:DF (float_extend:DF
                   (match_operand:SF 1 "reg_or_fp0_operand" "fG"))
                  (float_extend:DF
                   (match_operand:SF 2 "reg_or_fp0_operand" "fG"))))]
  "TARGET_FP && alpha_fptm < ALPHA_FPTM_SU"
  "sub%-%)%& %R1,%R2,%0"
  [(set_attr "type" "fadd")
   (set_attr "trap" "yes")])

(define_expand "subtf3"
  [(use (match_operand 0 "register_operand" ""))
   (use (match_operand 1 "general_operand" ""))
   (use (match_operand 2 "general_operand" ""))]
  "TARGET_HAS_XFLOATING_LIBS"
  "alpha_emit_xfloating_arith (MINUS, operands); DONE;")

(define_insn ""
  [(set (match_operand:SF 0 "register_operand" "=&f")
        (sqrt:SF (match_operand:SF 1 "reg_or_fp0_operand" "fG")))]
  "TARGET_FP && TARGET_FIX && alpha_fptm >= ALPHA_FPTM_SU"
  "sqrt%,%)%& %R1,%0"
  [(set_attr "type" "fsqrt")
   (set_attr "opsize" "si")
   (set_attr "trap" "yes")])

(define_insn "sqrtsf2"
  [(set (match_operand:SF 0 "register_operand" "=f")
        (sqrt:SF (match_operand:SF 1 "reg_or_fp0_operand" "fG")))]
  "TARGET_FP && TARGET_FIX"
  "sqrt%,%)%& %R1,%0"
  [(set_attr "type" "fsqrt")
   (set_attr "opsize" "si")
   (set_attr "trap" "yes")])

(define_insn ""
  [(set (match_operand:DF 0 "register_operand" "=&f")
        (sqrt:DF (match_operand:DF 1 "reg_or_fp0_operand" "fG")))]
  "TARGET_FP && TARGET_FIX && alpha_fptm >= ALPHA_FPTM_SU"
  "sqrt%-%)%& %R1,%0"
  [(set_attr "type" "fsqrt")
   (set_attr "trap" "yes")])

(define_insn "sqrtdf2"
  [(set (match_operand:DF 0 "register_operand" "=f")
        (sqrt:DF (match_operand:DF 1 "reg_or_fp0_operand" "fG")))]
  "TARGET_FP && TARGET_FIX"
  "sqrt%-%)%& %1,%0"
  [(set_attr "type" "fsqrt")
   (set_attr "trap" "yes")])
\f
;; Next are all the integer comparisons, and conditional moves and branches
;; and some of the related define_expand's and define_split's.

(define_insn "*setcc_internal"
  [(set (match_operand 0 "register_operand" "=r")
        (match_operator 1 "alpha_comparison_operator"
                           [(match_operand:DI 2 "reg_or_0_operand" "rJ")
                            (match_operand:DI 3 "reg_or_8bit_operand" "rI")]))]
  "GET_MODE_CLASS (GET_MODE (operands[0])) == MODE_INT
   && GET_MODE_SIZE (GET_MODE (operands[0])) <= 8
   && GET_MODE (operands[0]) == GET_MODE (operands[1])"
  "cmp%C1 %r2,%3,%0"
  [(set_attr "type" "icmp")])

(define_insn "*setcc_swapped_internal"
  [(set (match_operand 0 "register_operand" "=r")
        (match_operator 1 "alpha_swapped_comparison_operator"
                           [(match_operand:DI 2 "reg_or_8bit_operand" "rI")
                            (match_operand:DI 3 "reg_or_0_operand" "rJ")]))]
  "GET_MODE_CLASS (GET_MODE (operands[0])) == MODE_INT
   && GET_MODE_SIZE (GET_MODE (operands[0])) <= 8
   && GET_MODE (operands[0]) == GET_MODE (operands[1])"
  "cmp%c1 %r3,%2,%0"
  [(set_attr "type" "icmp")])

(define_insn "*setne_internal"
  [(set (match_operand 0 "register_operand" "=r")
        (match_operator 1 "signed_comparison_operator"
                          [(match_operand:DI 2 "reg_or_8bit_operand" "rI")
                           (const_int 0)]))]
  "GET_MODE_CLASS (GET_MODE (operands[0])) == MODE_INT
   && GET_MODE_SIZE (GET_MODE (operands[0])) <= 8
   && GET_CODE (operands[1]) == NE
   && GET_MODE (operands[0]) == GET_MODE (operands[1])"
  "cmpult $31,%2,%0"
  [(set_attr "type" "icmp")])

;; The mode folding trick can't be used with const_int operands, since
;; reload needs to know the proper mode.
;;
;; Use add_operand instead of the more seemingly natural reg_or_8bit_operand
;; in order to create more pairs of constants.  As long as we're allowing
;; two constants at the same time, and will have to reload one of them...

(define_insn "*movqicc_internal"
  [(set (match_operand:QI 0 "register_operand" "=r,r,r,r")
        (if_then_else:QI
         (match_operator 2 "signed_comparison_operator"
                         [(match_operand:DI 3 "reg_or_0_operand" "rJ,rJ,J,J")
                          (match_operand:DI 4 "reg_or_0_operand" "J,J,rJ,rJ")])
         (match_operand:QI 1 "add_operand" "rI,0,rI,0")
         (match_operand:QI 5 "add_operand" "0,rI,0,rI")))]
  "(operands[3] == const0_rtx || operands[4] == const0_rtx)"
  "@
   cmov%C2 %r3,%1,%0
   cmov%D2 %r3,%5,%0
   cmov%c2 %r4,%1,%0
   cmov%d2 %r4,%5,%0"
  [(set_attr "type" "icmov")])

(define_insn "*movhicc_internal"
  [(set (match_operand:HI 0 "register_operand" "=r,r,r,r")
        (if_then_else:HI
         (match_operator 2 "signed_comparison_operator"
                         [(match_operand:DI 3 "reg_or_0_operand" "rJ,rJ,J,J")
                          (match_operand:DI 4 "reg_or_0_operand" "J,J,rJ,rJ")])
         (match_operand:HI 1 "add_operand" "rI,0,rI,0")
         (match_operand:HI 5 "add_operand" "0,rI,0,rI")))]
  "(operands[3] == const0_rtx || operands[4] == const0_rtx)"
  "@
   cmov%C2 %r3,%1,%0
   cmov%D2 %r3,%5,%0
   cmov%c2 %r4,%1,%0
   cmov%d2 %r4,%5,%0"
  [(set_attr "type" "icmov")])

(define_insn "*movsicc_internal"
  [(set (match_operand:SI 0 "register_operand" "=r,r,r,r")
        (if_then_else:SI
         (match_operator 2 "signed_comparison_operator"
                         [(match_operand:DI 3 "reg_or_0_operand" "rJ,rJ,J,J")
                          (match_operand:DI 4 "reg_or_0_operand" "J,J,rJ,rJ")])
         (match_operand:SI 1 "add_operand" "rI,0,rI,0")
         (match_operand:SI 5 "add_operand" "0,rI,0,rI")))]
  "(operands[3] == const0_rtx || operands[4] == const0_rtx)"
  "@
   cmov%C2 %r3,%1,%0
   cmov%D2 %r3,%5,%0
   cmov%c2 %r4,%1,%0
   cmov%d2 %r4,%5,%0"
  [(set_attr "type" "icmov")])

(define_insn "*movdicc_internal"
  [(set (match_operand:DI 0 "register_operand" "=r,r,r,r")
        (if_then_else:DI
         (match_operator 2 "signed_comparison_operator"
                         [(match_operand:DI 3 "reg_or_0_operand" "rJ,rJ,J,J")
                          (match_operand:DI 4 "reg_or_0_operand" "J,J,rJ,rJ")])
         (match_operand:DI 1 "add_operand" "rI,0,rI,0")
         (match_operand:DI 5 "add_operand" "0,rI,0,rI")))]
  "(operands[3] == const0_rtx || operands[4] == const0_rtx)"
  "@
   cmov%C2 %r3,%1,%0
   cmov%D2 %r3,%5,%0
   cmov%c2 %r4,%1,%0
   cmov%d2 %r4,%5,%0"
  [(set_attr "type" "icmov")])

(define_insn "*movqicc_lbc"
  [(set (match_operand:QI 0 "register_operand" "=r,r")
        (if_then_else:QI
         (eq (zero_extract:DI (match_operand:DI 2 "reg_or_0_operand" "rJ,rJ")
                              (const_int 1)
                              (const_int 0))
             (const_int 0))
         (match_operand:QI 1 "reg_or_8bit_operand" "rI,0")
         (match_operand:QI 3 "reg_or_8bit_operand" "0,rI")))]
  ""
  "@
   cmovlbc %r2,%1,%0
   cmovlbs %r2,%3,%0"
  [(set_attr "type" "icmov")])

(define_insn "*movhicc_lbc"
  [(set (match_operand:HI 0 "register_operand" "=r,r")
        (if_then_else:HI
         (eq (zero_extract:DI (match_operand:DI 2 "reg_or_0_operand" "rJ,rJ")
                              (const_int 1)
                              (const_int 0))
             (const_int 0))
         (match_operand:HI 1 "reg_or_8bit_operand" "rI,0")
         (match_operand:HI 3 "reg_or_8bit_operand" "0,rI")))]
  ""
  "@
   cmovlbc %r2,%1,%0
   cmovlbs %r2,%3,%0"
  [(set_attr "type" "icmov")])

(define_insn "*movsicc_lbc"
  [(set (match_operand:SI 0 "register_operand" "=r,r")
        (if_then_else:SI
         (eq (zero_extract:DI (match_operand:DI 2 "reg_or_0_operand" "rJ,rJ")
                              (const_int 1)
                              (const_int 0))
             (const_int 0))
         (match_operand:SI 1 "reg_or_8bit_operand" "rI,0")
         (match_operand:SI 3 "reg_or_8bit_operand" "0,rI")))]
  ""
  "@
   cmovlbc %r2,%1,%0
   cmovlbs %r2,%3,%0"
  [(set_attr "type" "icmov")])

(define_insn "*movdicc_lbc"
  [(set (match_operand:DI 0 "register_operand" "=r,r")
        (if_then_else:DI
         (eq (zero_extract:DI (match_operand:DI 2 "reg_or_0_operand" "rJ,rJ")
                              (const_int 1)
                              (const_int 0))
             (const_int 0))
         (match_operand:DI 1 "reg_or_8bit_operand" "rI,0")
         (match_operand:DI 3 "reg_or_8bit_operand" "0,rI")))]
  ""
  "@
   cmovlbc %r2,%1,%0
   cmovlbs %r2,%3,%0"
  [(set_attr "type" "icmov")])

(define_insn "*movqicc_lbs"
  [(set (match_operand:QI 0 "register_operand" "=r,r")
        (if_then_else:QI
         (ne (zero_extract:DI (match_operand:DI 2 "reg_or_0_operand" "rJ,rJ")
                              (const_int 1)
                              (const_int 0))
             (const_int 0))
         (match_operand:QI 1 "reg_or_8bit_operand" "rI,0")
         (match_operand:QI 3 "reg_or_8bit_operand" "0,rI")))]
  ""
  "@
   cmovlbs %r2,%1,%0
   cmovlbc %r2,%3,%0"
  [(set_attr "type" "icmov")])

(define_insn "*movhicc_lbs"
  [(set (match_operand:HI 0 "register_operand" "=r,r")
        (if_then_else:HI
         (ne (zero_extract:DI (match_operand:DI 2 "reg_or_0_operand" "rJ,rJ")
                              (const_int 1)
                              (const_int 0))
             (const_int 0))
         (match_operand:HI 1 "reg_or_8bit_operand" "rI,0")
         (match_operand:HI 3 "reg_or_8bit_operand" "0,rI")))]
  ""
  "@
   cmovlbs %r2,%1,%0
   cmovlbc %r2,%3,%0"
  [(set_attr "type" "icmov")])

(define_insn "*movsicc_lbs"
  [(set (match_operand:SI 0 "register_operand" "=r,r")
        (if_then_else:SI
         (ne (zero_extract:DI (match_operand:DI 2 "reg_or_0_operand" "rJ,rJ")
                              (const_int 1)
                              (const_int 0))
             (const_int 0))
         (match_operand:SI 1 "reg_or_8bit_operand" "rI,0")
         (match_operand:SI 3 "reg_or_8bit_operand" "0,rI")))]
  ""
  "@
   cmovlbs %r2,%1,%0
   cmovlbc %r2,%3,%0"
  [(set_attr "type" "icmov")])

(define_insn "*movdicc_lbs"
  [(set (match_operand:DI 0 "register_operand" "=r,r")
        (if_then_else:DI
         (ne (zero_extract:DI (match_operand:DI 2 "reg_or_0_operand" "rJ,rJ")
                              (const_int 1)
                              (const_int 0))
             (const_int 0))
         (match_operand:DI 1 "reg_or_8bit_operand" "rI,0")
         (match_operand:DI 3 "reg_or_8bit_operand" "0,rI")))]
  ""
  "@
   cmovlbs %r2,%1,%0
   cmovlbc %r2,%3,%0"
  [(set_attr "type" "icmov")])

;; For ABS, we have two choices, depending on whether the input and output
;; registers are the same or not.
(define_expand "absdi2"
  [(set (match_operand:DI 0 "register_operand" "")
        (abs:DI (match_operand:DI 1 "register_operand" "")))]
  ""
  "
{ if (rtx_equal_p (operands[0], operands[1]))
    emit_insn (gen_absdi2_same (operands[0], gen_reg_rtx (DImode)));
  else
    emit_insn (gen_absdi2_diff (operands[0], operands[1]));

  DONE;
}")

(define_expand "absdi2_same"
  [(set (match_operand:DI 1 "register_operand" "")
        (neg:DI (match_operand:DI 0 "register_operand" "")))
   (set (match_dup 0)
        (if_then_else:DI (ge (match_dup 0) (const_int 0))
                         (match_dup 0)
                         (match_dup 1)))]
  ""
  "")

(define_expand "absdi2_diff"
  [(set (match_operand:DI 0 "register_operand" "")
        (neg:DI (match_operand:DI 1 "register_operand" "")))
   (set (match_dup 0)
        (if_then_else:DI (lt (match_dup 1) (const_int 0))
                         (match_dup 0)
                         (match_dup 1)))]
  ""
  "")

(define_split
  [(set (match_operand:DI 0 "register_operand" "")
        (abs:DI (match_dup 0)))
   (clobber (match_operand:DI 2 "register_operand" ""))]
  ""
  [(set (match_dup 1) (neg:DI (match_dup 0)))
   (set (match_dup 0) (if_then_else:DI (ge (match_dup 0) (const_int 0))
                                       (match_dup 0) (match_dup 1)))]
  "")

(define_split
  [(set (match_operand:DI 0 "register_operand" "")
        (abs:DI (match_operand:DI 1 "register_operand" "")))]
  "! rtx_equal_p (operands[0], operands[1])"
  [(set (match_dup 0) (neg:DI (match_dup 1)))
   (set (match_dup 0) (if_then_else:DI (lt (match_dup 1) (const_int 0))
                                       (match_dup 0) (match_dup 1)))]
  "")

(define_split
  [(set (match_operand:DI 0 "register_operand" "")
        (neg:DI (abs:DI (match_dup 0))))
   (clobber (match_operand:DI 2 "register_operand" ""))]
  ""
  [(set (match_dup 1) (neg:DI (match_dup 0)))
   (set (match_dup 0) (if_then_else:DI (le (match_dup 0) (const_int 0))
                                       (match_dup 0) (match_dup 1)))]
  "")

(define_split
  [(set (match_operand:DI 0 "register_operand" "")
        (neg:DI (abs:DI (match_operand:DI 1 "register_operand" ""))))]
  "! rtx_equal_p (operands[0], operands[1])"
  [(set (match_dup 0) (neg:DI (match_dup 1)))
   (set (match_dup 0) (if_then_else:DI (gt (match_dup 1) (const_int 0))
                                       (match_dup 0) (match_dup 1)))]
  "")

(define_insn "sminqi3"
  [(set (match_operand:QI 0 "register_operand" "=r")
        (smin:QI (match_operand:QI 1 "reg_or_0_operand" "%rJ")
                 (match_operand:QI 2 "reg_or_8bit_operand" "rI")))]
  "TARGET_MAX"
  "minsb8 %r1,%2,%0"
  [(set_attr "type" "mvi")])

(define_insn "uminqi3"
  [(set (match_operand:QI 0 "register_operand" "=r")
        (umin:QI (match_operand:QI 1 "reg_or_0_operand" "%rJ")
                 (match_operand:QI 2 "reg_or_8bit_operand" "rI")))]
  "TARGET_MAX"
  "minub8 %r1,%2,%0"
  [(set_attr "type" "mvi")])

(define_insn "smaxqi3"
  [(set (match_operand:QI 0 "register_operand" "=r")
        (smax:QI (match_operand:QI 1 "reg_or_0_operand" "%rJ")
                 (match_operand:QI 2 "reg_or_8bit_operand" "rI")))]
  "TARGET_MAX"
  "maxsb8 %r1,%2,%0"
  [(set_attr "type" "mvi")])

(define_insn "umaxqi3"
  [(set (match_operand:QI 0 "register_operand" "=r")
        (umax:QI (match_operand:QI 1 "reg_or_0_operand" "%rJ")
                 (match_operand:QI 2 "reg_or_8bit_operand" "rI")))]
  "TARGET_MAX"
  "maxub8 %r1,%2,%0"
  [(set_attr "type" "mvi")])

(define_insn "sminhi3"
  [(set (match_operand:HI 0 "register_operand" "=r")
        (smin:HI (match_operand:HI 1 "reg_or_0_operand" "%rJ")
                 (match_operand:HI 2 "reg_or_8bit_operand" "rI")))]
  "TARGET_MAX"
  "minsw4 %r1,%2,%0"
  [(set_attr "type" "mvi")])

(define_insn "uminhi3"
  [(set (match_operand:HI 0 "register_operand" "=r")
        (umin:HI (match_operand:HI 1 "reg_or_0_operand" "%rJ")
                 (match_operand:HI 2 "reg_or_8bit_operand" "rI")))]
  "TARGET_MAX"
  "minuw4 %r1,%2,%0"
  [(set_attr "type" "mvi")])

(define_insn "smaxhi3"
  [(set (match_operand:HI 0 "register_operand" "=r")
        (smax:HI (match_operand:HI 1 "reg_or_0_operand" "%rJ")
                 (match_operand:HI 2 "reg_or_8bit_operand" "rI")))]
  "TARGET_MAX"
  "maxsw4 %r1,%2,%0"
  [(set_attr "type" "mvi")])

(define_insn "umaxhi3"
  [(set (match_operand:HI 0 "register_operand" "=r")
        (umax:HI (match_operand:HI 1 "reg_or_0_operand" "%rJ")
                 (match_operand:HI 2 "reg_or_8bit_operand" "rI")))]
  "TARGET_MAX"
  "maxuw4 %r1,%2,%0"
  [(set_attr "type" "shift")])

(define_expand "smaxdi3"
  [(set (match_dup 3)
        (le:DI (match_operand:DI 1 "reg_or_0_operand" "")
               (match_operand:DI 2 "reg_or_8bit_operand" "")))
   (set (match_operand:DI 0 "register_operand" "")
        (if_then_else:DI (eq (match_dup 3) (const_int 0))
                         (match_dup 1) (match_dup 2)))]
  ""
  "
{ operands[3] = gen_reg_rtx (DImode);
}")

(define_split
  [(set (match_operand:DI 0 "register_operand" "")
        (smax:DI (match_operand:DI 1 "reg_or_0_operand" "")
                 (match_operand:DI 2 "reg_or_8bit_operand" "")))
   (clobber (match_operand:DI 3 "register_operand" ""))]
  "operands[2] != const0_rtx"
  [(set (match_dup 3) (le:DI (match_dup 1) (match_dup 2)))
   (set (match_dup 0) (if_then_else:DI (eq (match_dup 3) (const_int 0))
                                       (match_dup 1) (match_dup 2)))]
  "")

(define_insn ""
  [(set (match_operand:DI 0 "register_operand" "=r")
        (smax:DI (match_operand:DI 1 "register_operand" "0")
                 (const_int 0)))]
  ""
  "cmovlt %0,0,%0"
  [(set_attr "type" "icmov")])

(define_expand "smindi3"
  [(set (match_dup 3)
        (lt:DI (match_operand:DI 1 "reg_or_0_operand" "")
               (match_operand:DI 2 "reg_or_8bit_operand" "")))
   (set (match_operand:DI 0 "register_operand" "")
        (if_then_else:DI (ne (match_dup 3) (const_int 0))
                         (match_dup 1) (match_dup 2)))]
  ""
  "
{ operands[3] = gen_reg_rtx (DImode);
}")

(define_split
  [(set (match_operand:DI 0 "register_operand" "")
        (smin:DI (match_operand:DI 1 "reg_or_0_operand" "")
                 (match_operand:DI 2 "reg_or_8bit_operand" "")))
   (clobber (match_operand:DI 3 "register_operand" ""))]
  "operands[2] != const0_rtx"
  [(set (match_dup 3) (lt:DI (match_dup 1) (match_dup 2)))
   (set (match_dup 0) (if_then_else:DI (ne (match_dup 3) (const_int 0))
                                       (match_dup 1) (match_dup 2)))]
  "")

(define_insn ""
  [(set (match_operand:DI 0 "register_operand" "=r")
        (smin:DI (match_operand:DI 1 "register_operand" "0")
                 (const_int 0)))]
  ""
  "cmovgt %0,0,%0"
  [(set_attr "type" "icmov")])

(define_expand "umaxdi3"
  [(set (match_dup 3) 
        (leu:DI (match_operand:DI 1 "reg_or_0_operand" "")
                (match_operand:DI 2 "reg_or_8bit_operand" "")))
   (set (match_operand:DI 0 "register_operand" "")
        (if_then_else:DI (eq (match_dup 3) (const_int 0))
                         (match_dup 1) (match_dup 2)))]
  ""
  "
{ operands[3] = gen_reg_rtx (DImode);
}")

(define_split
  [(set (match_operand:DI 0 "register_operand" "")
        (umax:DI (match_operand:DI 1 "reg_or_0_operand" "")
                 (match_operand:DI 2 "reg_or_8bit_operand" "")))
   (clobber (match_operand:DI 3 "register_operand" ""))]
  "operands[2] != const0_rtx"
  [(set (match_dup 3) (leu:DI (match_dup 1) (match_dup 2)))
   (set (match_dup 0) (if_then_else:DI (eq (match_dup 3) (const_int 0))
                                       (match_dup 1) (match_dup 2)))]
  "")

(define_expand "umindi3"
  [(set (match_dup 3)
        (ltu:DI (match_operand:DI 1 "reg_or_0_operand" "")
                (match_operand:DI 2 "reg_or_8bit_operand" "")))
   (set (match_operand:DI 0 "register_operand" "")
        (if_then_else:DI (ne (match_dup 3) (const_int 0))
                         (match_dup 1) (match_dup 2)))]
  ""
  "
{ operands[3] = gen_reg_rtx (DImode);
}")

(define_split
  [(set (match_operand:DI 0 "register_operand" "")
        (umin:DI (match_operand:DI 1 "reg_or_0_operand" "")
                 (match_operand:DI 2 "reg_or_8bit_operand" "")))
   (clobber (match_operand:DI 3 "register_operand" ""))]
  "operands[2] != const0_rtx"
  [(set (match_dup 3) (ltu:DI (match_dup 1) (match_dup 2)))
   (set (match_dup 0) (if_then_else:DI (ne (match_dup 3) (const_int 0))
                                       (match_dup 1) (match_dup 2)))]
  "")

(define_insn ""
  [(set (pc)
        (if_then_else
         (match_operator 1 "signed_comparison_operator"
                         [(match_operand:DI 2 "reg_or_0_operand" "rJ")
                          (const_int 0)])
         (label_ref (match_operand 0 "" ""))
         (pc)))]
  ""
  "b%C1 %r2,%0"
  [(set_attr "type" "ibr")])

(define_insn ""
  [(set (pc)
        (if_then_else
         (match_operator 1 "signed_comparison_operator"
                         [(const_int 0)
                          (match_operand:DI 2 "register_operand" "r")])
         (label_ref (match_operand 0 "" ""))
         (pc)))]
  ""
  "b%c1 %2,%0"
  [(set_attr "type" "ibr")])

(define_insn ""
  [(set (pc)
        (if_then_else
         (ne (zero_extract:DI (match_operand:DI 1 "reg_or_0_operand" "rJ")
                              (const_int 1)
                              (const_int 0))
             (const_int 0))
         (label_ref (match_operand 0 "" ""))
         (pc)))]
  ""
  "blbs %r1,%0"
  [(set_attr "type" "ibr")])

(define_insn ""
  [(set (pc)
        (if_then_else
         (eq (zero_extract:DI (match_operand:DI 1 "reg_or_0_operand" "rJ")
                              (const_int 1)
                              (const_int 0))
             (const_int 0))
         (label_ref (match_operand 0 "" ""))
         (pc)))]
  ""
  "blbc %r1,%0"
  [(set_attr "type" "ibr")])

(define_split
  [(parallel
    [(set (pc)
          (if_then_else
           (match_operator 1 "comparison_operator"
                           [(zero_extract:DI (match_operand:DI 2 "register_operand" "")
                                             (const_int 1)
                                             (match_operand:DI 3 "const_int_operand" ""))
                            (const_int 0)])
           (label_ref (match_operand 0 "" ""))
           (pc)))
     (clobber (match_operand:DI 4 "register_operand" ""))])]
  "INTVAL (operands[3]) != 0"
  [(set (match_dup 4)
        (lshiftrt:DI (match_dup 2) (match_dup 3)))
   (set (pc)
        (if_then_else (match_op_dup 1
                                    [(zero_extract:DI (match_dup 4)
                                                      (const_int 1)
                                                      (const_int 0))
                                     (const_int 0)])
                      (label_ref (match_dup 0))
                      (pc)))]
  "")
\f
;; The following are the corresponding floating-point insns.  Recall
;; we need to have variants that expand the arguments from SFmode
;; to DFmode.

(define_insn "*cmpdf_tp"
  [(set (match_operand:DF 0 "register_operand" "=&f")
        (match_operator:DF 1 "alpha_fp_comparison_operator"
                           [(match_operand:DF 2 "reg_or_fp0_operand" "fG")
                            (match_operand:DF 3 "reg_or_fp0_operand" "fG")]))]
  "TARGET_FP && alpha_fptm >= ALPHA_FPTM_SU"
  "cmp%-%C1%' %R2,%R3,%0"
  [(set_attr "type" "fadd")
   (set_attr "trap" "yes")])

(define_insn "*cmpdf_no_tp"
  [(set (match_operand:DF 0 "register_operand" "=f")
        (match_operator:DF 1 "alpha_fp_comparison_operator"
                           [(match_operand:DF 2 "reg_or_fp0_operand" "fG")
                            (match_operand:DF 3 "reg_or_fp0_operand" "fG")]))]
  "TARGET_FP && alpha_fptm < ALPHA_FPTM_SU"
  "cmp%-%C1%' %R2,%R3,%0"
  [(set_attr "type" "fadd")
   (set_attr "trap" "yes")])

(define_insn ""
  [(set (match_operand:DF 0 "register_operand" "=&f")
        (match_operator:DF 1 "alpha_fp_comparison_operator"
                           [(float_extend:DF
                             (match_operand:SF 2 "reg_or_fp0_operand" "fG"))
                            (match_operand:DF 3 "reg_or_fp0_operand" "fG")]))]
  "TARGET_FP && alpha_fptm >= ALPHA_FPTM_SU"
  "cmp%-%C1%' %R2,%R3,%0"
  [(set_attr "type" "fadd")
   (set_attr "trap" "yes")])

(define_insn ""
  [(set (match_operand:DF 0 "register_operand" "=f")
        (match_operator:DF 1 "alpha_fp_comparison_operator"
                           [(float_extend:DF
                             (match_operand:SF 2 "reg_or_fp0_operand" "fG"))
                            (match_operand:DF 3 "reg_or_fp0_operand" "fG")]))]
  "TARGET_FP && alpha_fptm < ALPHA_FPTM_SU"
  "cmp%-%C1%' %R2,%R3,%0"
  [(set_attr "type" "fadd")
   (set_attr "trap" "yes")])

(define_insn ""
  [(set (match_operand:DF 0 "register_operand" "=&f")
        (match_operator:DF 1 "alpha_fp_comparison_operator"
                           [(match_operand:DF 2 "reg_or_fp0_operand" "fG")
                            (float_extend:DF
                             (match_operand:SF 3 "reg_or_fp0_operand" "fG"))]))]
  "TARGET_FP && alpha_fptm >= ALPHA_FPTM_SU"
  "cmp%-%C1%' %R2,%R3,%0"
  [(set_attr "type" "fadd")
   (set_attr "trap" "yes")])

(define_insn ""
  [(set (match_operand:DF 0 "register_operand" "=f")
        (match_operator:DF 1 "alpha_fp_comparison_operator"
                           [(match_operand:DF 2 "reg_or_fp0_operand" "fG")
                            (float_extend:DF
                             (match_operand:SF 3 "reg_or_fp0_operand" "fG"))]))]
  "TARGET_FP && alpha_fptm < ALPHA_FPTM_SU"
  "cmp%-%C1%' %R2,%R3,%0"
  [(set_attr "type" "fadd")
   (set_attr "trap" "yes")])

(define_insn ""
  [(set (match_operand:DF 0 "register_operand" "=&f")
        (match_operator:DF 1 "alpha_fp_comparison_operator"
                           [(float_extend:DF
                             (match_operand:SF 2 "reg_or_fp0_operand" "fG"))
                            (float_extend:DF
                             (match_operand:SF 3 "reg_or_fp0_operand" "fG"))]))]
  "TARGET_FP && alpha_fptm >= ALPHA_FPTM_SU"
  "cmp%-%C1%' %R2,%R3,%0"
  [(set_attr "type" "fadd")
   (set_attr "trap" "yes")])

(define_insn ""
  [(set (match_operand:DF 0 "register_operand" "=f")
        (match_operator:DF 1 "alpha_fp_comparison_operator"
                           [(float_extend:DF
                             (match_operand:SF 2 "reg_or_fp0_operand" "fG"))
                            (float_extend:DF
                             (match_operand:SF 3 "reg_or_fp0_operand" "fG"))]))]
  "TARGET_FP && alpha_fptm < ALPHA_FPTM_SU"
  "cmp%-%C1%' %R2,%R3,%0"
  [(set_attr "type" "fadd")
   (set_attr "trap" "yes")])

(define_insn ""
  [(set (match_operand:DF 0 "register_operand" "=f,f")
        (if_then_else:DF 
         (match_operator 3 "signed_comparison_operator"
                         [(match_operand:DF 4 "reg_or_fp0_operand" "fG,fG")
                          (match_operand:DF 2 "fp0_operand" "G,G")])
         (match_operand:DF 1 "reg_or_fp0_operand" "fG,0")
         (match_operand:DF 5 "reg_or_fp0_operand" "0,fG")))]
  "TARGET_FP"
  "@
   fcmov%C3 %R4,%R1,%0
   fcmov%D3 %R4,%R5,%0"
  [(set_attr "type" "fcmov")])

(define_insn ""
  [(set (match_operand:SF 0 "register_operand" "=f,f")
        (if_then_else:SF 
         (match_operator 3 "signed_comparison_operator"
                         [(match_operand:DF 4 "reg_or_fp0_operand" "fG,fG")
                          (match_operand:DF 2 "fp0_operand" "G,G")])
         (match_operand:SF 1 "reg_or_fp0_operand" "fG,0")
         (match_operand:SF 5 "reg_or_fp0_operand" "0,fG")))]
  "TARGET_FP"
  "@
   fcmov%C3 %R4,%R1,%0
   fcmov%D3 %R4,%R5,%0"
  [(set_attr "type" "fcmov")])

(define_insn ""
  [(set (match_operand:DF 0 "register_operand" "=f,f")
        (if_then_else:DF 
         (match_operator 3 "signed_comparison_operator"
                         [(match_operand:DF 4 "reg_or_fp0_operand" "fG,fG")
                          (match_operand:DF 2 "fp0_operand" "G,G")])
         (float_extend:DF (match_operand:SF 1 "reg_or_fp0_operand" "fG,0"))
         (match_operand:DF 5 "reg_or_fp0_operand" "0,fG")))]
  "TARGET_FP"
  "@
   fcmov%C3 %R4,%R1,%0
   fcmov%D3 %R4,%R5,%0"
  [(set_attr "type" "fcmov")])

(define_insn ""
  [(set (match_operand:DF 0 "register_operand" "=f,f")
        (if_then_else:DF 
         (match_operator 3 "signed_comparison_operator"
                         [(float_extend:DF 
                           (match_operand:SF 4 "reg_or_fp0_operand" "fG,fG"))
                          (match_operand:DF 2 "fp0_operand" "G,G")])
         (match_operand:DF 1 "reg_or_fp0_operand" "fG,0")
         (match_operand:DF 5 "reg_or_fp0_operand" "0,fG")))]
  "TARGET_FP"
  "@
   fcmov%C3 %R4,%R1,%0
   fcmov%D3 %R4,%R5,%0"
  [(set_attr "type" "fcmov")])

(define_insn ""
  [(set (match_operand:SF 0 "register_operand" "=f,f")
        (if_then_else:SF 
         (match_operator 3 "signed_comparison_operator"
                         [(float_extend:DF
                           (match_operand:SF 4 "reg_or_fp0_operand" "fG,fG"))
                          (match_operand:DF 2 "fp0_operand" "G,G")])
         (match_operand:SF 1 "reg_or_fp0_operand" "fG,0")
         (match_operand:SF 5 "reg_or_fp0_operand" "0,fG")))]
  "TARGET_FP"
  "@
   fcmov%C3 %R4,%R1,%0
   fcmov%D3 %R4,%R5,%0"
  [(set_attr "type" "fcmov")])

(define_insn ""
  [(set (match_operand:DF 0 "register_operand" "=f,f")
        (if_then_else:DF 
         (match_operator 3 "signed_comparison_operator"
                         [(float_extend:DF
                           (match_operand:SF 4 "reg_or_fp0_operand" "fG,fG"))
                          (match_operand:DF 2 "fp0_operand" "G,G")])
         (float_extend:DF (match_operand:SF 1 "reg_or_fp0_operand" "fG,0"))
         (match_operand:DF 5 "reg_or_fp0_operand" "0,fG")))]
  "TARGET_FP"
  "@
   fcmov%C3 %R4,%R1,%0
   fcmov%D3 %R4,%R5,%0"
  [(set_attr "type" "fcmov")])

(define_expand "maxdf3"
  [(set (match_dup 3)
        (le:DF (match_operand:DF 1 "reg_or_fp0_operand" "")
               (match_operand:DF 2 "reg_or_fp0_operand" "")))
   (set (match_operand:DF 0 "register_operand" "")
        (if_then_else:DF (eq (match_dup 3) (match_dup 4))
                         (match_dup 1) (match_dup 2)))]
  "TARGET_FP"
  "
{ operands[3] = gen_reg_rtx (DFmode);
  operands[4] = CONST0_RTX (DFmode);
}")

(define_expand "mindf3"
  [(set (match_dup 3)
        (lt:DF (match_operand:DF 1 "reg_or_fp0_operand" "")
               (match_operand:DF 2 "reg_or_fp0_operand" "")))
   (set (match_operand:DF 0 "register_operand" "")
        (if_then_else:DF (ne (match_dup 3) (match_dup 4))
                         (match_dup 1) (match_dup 2)))]
  "TARGET_FP"
  "
{ operands[3] = gen_reg_rtx (DFmode);
  operands[4] = CONST0_RTX (DFmode);
}")

(define_expand "maxsf3"
  [(set (match_dup 3)
        (le:DF (float_extend:DF (match_operand:SF 1 "reg_or_fp0_operand" ""))
               (float_extend:DF (match_operand:SF 2 "reg_or_fp0_operand" ""))))
   (set (match_operand:SF 0 "register_operand" "")
        (if_then_else:SF (eq (match_dup 3) (match_dup 4))
                         (match_dup 1) (match_dup 2)))]
  "TARGET_FP"
  "
{ operands[3] = gen_reg_rtx (DFmode);
  operands[4] = CONST0_RTX (DFmode);
}")

(define_expand "minsf3"
  [(set (match_dup 3)
        (lt:DF (float_extend:DF (match_operand:SF 1 "reg_or_fp0_operand" ""))
               (float_extend:DF (match_operand:SF 2 "reg_or_fp0_operand" ""))))
   (set (match_operand:SF 0 "register_operand" "")
        (if_then_else:SF (ne (match_dup 3) (match_dup 4))
                      (match_dup 1) (match_dup 2)))]
  "TARGET_FP"
  "
{ operands[3] = gen_reg_rtx (DFmode);
  operands[4] = CONST0_RTX (DFmode);
}")

(define_insn ""
  [(set (pc)
        (if_then_else
         (match_operator 1 "signed_comparison_operator"
                         [(match_operand:DF 2 "reg_or_fp0_operand" "fG")
                          (match_operand:DF 3 "fp0_operand" "G")])
         (label_ref (match_operand 0 "" ""))
         (pc)))]
  "TARGET_FP"
  "fb%C1 %R2,%0"
  [(set_attr "type" "fbr")])

(define_insn ""
  [(set (pc)
        (if_then_else
         (match_operator 1 "signed_comparison_operator"
                         [(float_extend:DF
                           (match_operand:SF 2 "reg_or_fp0_operand" "fG"))
                          (match_operand:DF 3 "fp0_operand" "G")])
         (label_ref (match_operand 0 "" ""))
         (pc)))]
  "TARGET_FP"
  "fb%C1 %R2,%0"
  [(set_attr "type" "fbr")])
\f
;; These are the main define_expand's used to make conditional branches
;; and compares.

(define_expand "cmpdf"
  [(set (cc0) (compare (match_operand:DF 0 "reg_or_fp0_operand" "")
                       (match_operand:DF 1 "reg_or_fp0_operand" "")))]
  "TARGET_FP"
  "
{
  alpha_compare.op0 = operands[0];
  alpha_compare.op1 = operands[1];
  alpha_compare.fp_p = 1;
  DONE;
}")

(define_expand "cmptf"
  [(set (cc0) (compare (match_operand:TF 0 "general_operand" "")
                       (match_operand:TF 1 "general_operand" "")))]
  "TARGET_HAS_XFLOATING_LIBS"
  "
{
  alpha_compare.op0 = operands[0];
  alpha_compare.op1 = operands[1];
  alpha_compare.fp_p = 1;
  DONE;
}")

(define_expand "cmpdi"
  [(set (cc0) (compare (match_operand:DI 0 "general_operand" "")
                       (match_operand:DI 1 "general_operand" "")))]
  ""
  "
{
  alpha_compare.op0 = operands[0];
  alpha_compare.op1 = operands[1];
  alpha_compare.fp_p = 0;
  DONE;
}")

(define_expand "beq"
  [(set (pc)
        (if_then_else (match_dup 1)
                      (label_ref (match_operand 0 "" ""))
                      (pc)))]
  ""
  "{ operands[1] = alpha_emit_conditional_branch (EQ); }")

(define_expand "bne"
  [(set (pc)
        (if_then_else (match_dup 1)
                      (label_ref (match_operand 0 "" ""))
                      (pc)))]
  ""
  "{ operands[1] = alpha_emit_conditional_branch (NE); }")

(define_expand "blt"
  [(set (pc)
        (if_then_else (match_dup 1)
                      (label_ref (match_operand 0 "" ""))
                      (pc)))]
  ""
  "{ operands[1] = alpha_emit_conditional_branch (LT); }")

(define_expand "ble"
  [(set (pc)
        (if_then_else (match_dup 1)
                      (label_ref (match_operand 0 "" ""))
                      (pc)))]
  ""
  "{ operands[1] = alpha_emit_conditional_branch (LE); }")

(define_expand "bgt"
  [(set (pc)
        (if_then_else (match_dup 1)
                      (label_ref (match_operand 0 "" ""))
                      (pc)))]
  ""
  "{ operands[1] = alpha_emit_conditional_branch (GT); }")

(define_expand "bge"
  [(set (pc)
        (if_then_else (match_dup 1)
                      (label_ref (match_operand 0 "" ""))
                      (pc)))]
  ""
  "{ operands[1] = alpha_emit_conditional_branch (GE); }")

(define_expand "bltu"
  [(set (pc)
        (if_then_else (match_dup 1)
                      (label_ref (match_operand 0 "" ""))
                      (pc)))]
  ""
  "{ operands[1] = alpha_emit_conditional_branch (LTU); }")

(define_expand "bleu"
  [(set (pc)
        (if_then_else (match_dup 1)
                      (label_ref (match_operand 0 "" ""))
                      (pc)))]
  ""
  "{ operands[1] = alpha_emit_conditional_branch (LEU); }")

(define_expand "bgtu"
  [(set (pc)
        (if_then_else (match_dup 1)
                      (label_ref (match_operand 0 "" ""))
                      (pc)))]
  ""
  "{ operands[1] = alpha_emit_conditional_branch (GTU); }")

(define_expand "bgeu"
  [(set (pc)
        (if_then_else (match_dup 1)
                      (label_ref (match_operand 0 "" ""))
                      (pc)))]
  ""
  "{ operands[1] = alpha_emit_conditional_branch (GEU); }")

(define_expand "bunordered"
  [(set (pc)
        (if_then_else (match_dup 1)
                      (label_ref (match_operand 0 "" ""))
                      (pc)))]
  ""
  "{ operands[1] = alpha_emit_conditional_branch (UNORDERED); }")

(define_expand "bordered"
  [(set (pc)
        (if_then_else (match_dup 1)
                      (label_ref (match_operand 0 "" ""))
                      (pc)))]
  ""
  "{ operands[1] = alpha_emit_conditional_branch (ORDERED); }")

(define_expand "seq"
  [(set (match_operand:DI 0 "register_operand" "")
        (match_dup 1))]
  ""
  "{ if ((operands[1] = alpha_emit_setcc (EQ)) == NULL_RTX) FAIL; }")

(define_expand "sne"
  [(set (match_operand:DI 0 "register_operand" "")
        (match_dup 1))]
  ""
  "{ if ((operands[1] = alpha_emit_setcc (NE)) == NULL_RTX) FAIL; }")

(define_expand "slt"
  [(set (match_operand:DI 0 "register_operand" "")
        (match_dup 1))]
  ""
  "{ if ((operands[1] = alpha_emit_setcc (LT)) == NULL_RTX) FAIL; }")

(define_expand "sle"
  [(set (match_operand:DI 0 "register_operand" "")
        (match_dup 1))]
  ""
  "{ if ((operands[1] = alpha_emit_setcc (LE)) == NULL_RTX) FAIL; }")

(define_expand "sgt"
  [(set (match_operand:DI 0 "register_operand" "")
        (match_dup 1))]
  ""
  "{ if ((operands[1] = alpha_emit_setcc (GT)) == NULL_RTX) FAIL; }")

(define_expand "sge"
  [(set (match_operand:DI 0 "register_operand" "")
        (match_dup 1))]
  ""
  "{ if ((operands[1] = alpha_emit_setcc (GE)) == NULL_RTX) FAIL; }")

(define_expand "sltu"
  [(set (match_operand:DI 0 "register_operand" "")
        (match_dup 1))]
  ""
  "{ if ((operands[1] = alpha_emit_setcc (LTU)) == NULL_RTX) FAIL; }")

(define_expand "sleu"
  [(set (match_operand:DI 0 "register_operand" "")
        (match_dup 1))]
  ""
  "{ if ((operands[1] = alpha_emit_setcc (LEU)) == NULL_RTX) FAIL; }")

(define_expand "sgtu"
  [(set (match_operand:DI 0 "register_operand" "")
        (match_dup 1))]
  ""
  "{ if ((operands[1] = alpha_emit_setcc (GTU)) == NULL_RTX) FAIL; }")

(define_expand "sgeu"
  [(set (match_operand:DI 0 "register_operand" "")
        (match_dup 1))]
  ""
  "{ if ((operands[1] = alpha_emit_setcc (GEU)) == NULL_RTX) FAIL; }")

(define_expand "sunordered"
  [(set (match_operand:DI 0 "register_operand" "")
        (match_dup 1))]
  ""
  "{ if ((operands[1] = alpha_emit_setcc (UNORDERED)) == NULL_RTX) FAIL; }")

(define_expand "sordered"
  [(set (match_operand:DI 0 "register_operand" "")
        (match_dup 1))]
  ""
  "{ if ((operands[1] = alpha_emit_setcc (ORDERED)) == NULL_RTX) FAIL; }")
\f
;; These are the main define_expand's used to make conditional moves.

(define_expand "movsicc"
  [(set (match_operand:SI 0 "register_operand" "")
        (if_then_else:SI (match_operand 1 "comparison_operator" "")
                         (match_operand:SI 2 "reg_or_8bit_operand" "")
                         (match_operand:SI 3 "reg_or_8bit_operand" "")))]
  ""
  "
{
  if ((operands[1] = alpha_emit_conditional_move (operands[1], SImode)) == 0)
    FAIL;
}")

(define_expand "movdicc"
  [(set (match_operand:DI 0 "register_operand" "")
        (if_then_else:DI (match_operand 1 "comparison_operator" "")
                         (match_operand:DI 2 "reg_or_8bit_operand" "")
                         (match_operand:DI 3 "reg_or_8bit_operand" "")))]
  ""
  "
{
  if ((operands[1] = alpha_emit_conditional_move (operands[1], DImode)) == 0)
    FAIL;
}")

(define_expand "movsfcc"
  [(set (match_operand:SF 0 "register_operand" "")
        (if_then_else:SF (match_operand 1 "comparison_operator" "")
                         (match_operand:SF 2 "reg_or_8bit_operand" "")
                         (match_operand:SF 3 "reg_or_8bit_operand" "")))]
  ""
  "
{
  if ((operands[1] = alpha_emit_conditional_move (operands[1], SFmode)) == 0)
    FAIL;
}")

(define_expand "movdfcc"
  [(set (match_operand:DF 0 "register_operand" "")
        (if_then_else:DF (match_operand 1 "comparison_operator" "")
                         (match_operand:DF 2 "reg_or_8bit_operand" "")
                         (match_operand:DF 3 "reg_or_8bit_operand" "")))]
  ""
  "
{
  if ((operands[1] = alpha_emit_conditional_move (operands[1], DFmode)) == 0)
    FAIL;
}")
\f
;; These define_split definitions are used in cases when comparisons have
;; not be stated in the correct way and we need to reverse the second
;; comparison.  For example, x >= 7 has to be done as x < 6 with the
;; comparison that tests the result being reversed.  We have one define_split
;; for each use of a comparison.  They do not match valid insns and need
;; not generate valid insns.
;;
;; We can also handle equality comparisons (and inequality comparisons in
;; cases where the resulting add cannot overflow) by doing an add followed by
;; a comparison with zero.  This is faster since the addition takes one
;; less cycle than a compare when feeding into a conditional move.
;; For this case, we also have an SImode pattern since we can merge the add
;; and sign extend and the order doesn't matter.
;;
;; We do not do this for floating-point, since it isn't clear how the "wrong"
;; operation could have been generated.

(define_split
  [(set (match_operand:DI 0 "register_operand" "")
        (if_then_else:DI
         (match_operator 1 "comparison_operator"
                         [(match_operand:DI 2 "reg_or_0_operand" "")
                          (match_operand:DI 3 "reg_or_cint_operand" "")])
         (match_operand:DI 4 "reg_or_cint_operand" "")
         (match_operand:DI 5 "reg_or_cint_operand" "")))
   (clobber (match_operand:DI 6 "register_operand" ""))]
  "operands[3] != const0_rtx"
  [(set (match_dup 6) (match_dup 7))
   (set (match_dup 0)
        (if_then_else:DI (match_dup 8) (match_dup 4) (match_dup 5)))]
  "
{ enum rtx_code code = GET_CODE (operands[1]);
  int unsignedp = (code == GEU || code == LEU || code == GTU || code == LTU);

  /* If we are comparing for equality with a constant and that constant
     appears in the arm when the register equals the constant, use the
     register since that is more likely to match (and to produce better code
     if both would).  */

  if (code == EQ && GET_CODE (operands[3]) == CONST_INT
      && rtx_equal_p (operands[4], operands[3]))
    operands[4] = operands[2];

  else if (code == NE && GET_CODE (operands[3]) == CONST_INT
           && rtx_equal_p (operands[5], operands[3]))
    operands[5] = operands[2];

  if (code == NE || code == EQ
      || (extended_count (operands[2], DImode, unsignedp) >= 1
          && extended_count (operands[3], DImode, unsignedp) >= 1))
    {
      if (GET_CODE (operands[3]) == CONST_INT)
        operands[7] = gen_rtx_PLUS (DImode, operands[2],
                                    GEN_INT (- INTVAL (operands[3])));
      else
        operands[7] = gen_rtx_MINUS (DImode, operands[2], operands[3]);

      operands[8] = gen_rtx_fmt_ee (code, VOIDmode, operands[6], const0_rtx);
    }

  else if (code == EQ || code == LE || code == LT
           || code == LEU || code == LTU)
    {
      operands[7] = gen_rtx_fmt_ee (code, DImode, operands[2], operands[3]);
      operands[8] = gen_rtx_NE (VOIDmode, operands[6], const0_rtx);
    }
  else
    {
      operands[7] = gen_rtx_fmt_ee (reverse_condition (code), DImode,
                                    operands[2], operands[3]);
      operands[8] = gen_rtx_EQ (VOIDmode, operands[6], const0_rtx);
    }
}")

(define_split
  [(set (match_operand:DI 0 "register_operand" "")
        (if_then_else:DI
         (match_operator 1 "comparison_operator"
                         [(match_operand:SI 2 "reg_or_0_operand" "")
                          (match_operand:SI 3 "reg_or_cint_operand" "")])
         (match_operand:DI 4 "reg_or_8bit_operand" "")
         (match_operand:DI 5 "reg_or_8bit_operand" "")))
   (clobber (match_operand:DI 6 "register_operand" ""))]
  "operands[3] != const0_rtx
   && (GET_CODE (operands[1]) == EQ || GET_CODE (operands[1]) == NE)"
  [(set (match_dup 6) (match_dup 7))
   (set (match_dup 0)
        (if_then_else:DI (match_dup 8) (match_dup 4) (match_dup 5)))]
  "
{ enum rtx_code code = GET_CODE (operands[1]);
  int unsignedp = (code == GEU || code == LEU || code == GTU || code == LTU);
  rtx tem;

  if ((code != NE && code != EQ
       && ! (extended_count (operands[2], DImode, unsignedp) >= 1
             && extended_count (operands[3], DImode, unsignedp) >= 1)))
    FAIL;
 
  if (GET_CODE (operands[3]) == CONST_INT)
    tem = gen_rtx_PLUS (SImode, operands[2],
                        GEN_INT (- INTVAL (operands[3])));
  else
    tem = gen_rtx_MINUS (SImode, operands[2], operands[3]);

  operands[7] = gen_rtx_SIGN_EXTEND (DImode, tem);
  operands[8] = gen_rtx_fmt_ee (GET_CODE (operands[1]), VOIDmode,
                                operands[6], const0_rtx);
}")

(define_split
  [(set (pc)
        (if_then_else
         (match_operator 1 "comparison_operator"
                         [(match_operand:DI 2 "reg_or_0_operand" "")
                          (match_operand:DI 3 "reg_or_cint_operand" "")])
         (label_ref (match_operand 0 "" ""))
         (pc)))
   (clobber (match_operand:DI 4 "register_operand" ""))]
  "operands[3] != const0_rtx"
  [(set (match_dup 4) (match_dup 5))
   (set (pc) (if_then_else (match_dup 6) (label_ref (match_dup 0)) (pc)))]
  "
{ enum rtx_code code = GET_CODE (operands[1]);
  int unsignedp = (code == GEU || code == LEU || code == GTU || code == LTU);

  if (code == NE || code == EQ
      || (extended_count (operands[2], DImode, unsignedp) >= 1
          && extended_count (operands[3], DImode, unsignedp) >= 1))
    {
      if (GET_CODE (operands[3]) == CONST_INT)
        operands[5] = gen_rtx_PLUS (DImode, operands[2],
                                    GEN_INT (- INTVAL (operands[3])));
      else
        operands[5] = gen_rtx_MINUS (DImode, operands[2], operands[3]);

      operands[6] = gen_rtx_fmt_ee (code, VOIDmode, operands[4], const0_rtx);
    }

  else if (code == EQ || code == LE || code == LT
           || code == LEU || code == LTU)
    {
      operands[5] = gen_rtx_fmt_ee (code, DImode, operands[2], operands[3]);
      operands[6] = gen_rtx_NE (VOIDmode, operands[4], const0_rtx);
    }
  else
    {
      operands[5] = gen_rtx_fmt_ee (reverse_condition (code), DImode,
                                    operands[2], operands[3]);
      operands[6] = gen_rtx_EQ (VOIDmode, operands[4], const0_rtx);
    }
}")

(define_split
  [(set (pc)
        (if_then_else
         (match_operator 1 "comparison_operator"
                         [(match_operand:SI 2 "reg_or_0_operand" "")
                          (match_operand:SI 3 "const_int_operand" "")])
         (label_ref (match_operand 0 "" ""))
         (pc)))
   (clobber (match_operand:DI 4 "register_operand" ""))]
  "operands[3] != const0_rtx
   && (GET_CODE (operands[1]) == EQ || GET_CODE (operands[1]) == NE)"
  [(set (match_dup 4) (match_dup 5))
   (set (pc) (if_then_else (match_dup 6) (label_ref (match_dup 0)) (pc)))]
  "
{ rtx tem;

  if (GET_CODE (operands[3]) == CONST_INT)
    tem = gen_rtx_PLUS (SImode, operands[2],
                        GEN_INT (- INTVAL (operands[3])));
  else
    tem = gen_rtx_MINUS (SImode, operands[2], operands[3]);
  
  operands[5] = gen_rtx_SIGN_EXTEND (DImode, tem);
  operands[6] = gen_rtx_fmt_ee (GET_CODE (operands[1]), VOIDmode,
                                operands[4], const0_rtx);
}")

;; We can convert such things as "a > 0xffff" to "t = a & ~ 0xffff; t != 0".
;; This eliminates one, and sometimes two, insns when the AND can be done
;; with a ZAP.
(define_split
  [(set (match_operand:DI 0 "register_operand" "")
        (match_operator:DI 1 "comparison_operator"
                        [(match_operand:DI 2 "register_operand" "")
                         (match_operand:DI 3 "const_int_operand" "")]))
   (clobber (match_operand:DI 4 "register_operand" ""))]
  "exact_log2 (INTVAL (operands[3]) + 1) >= 0
   && (GET_CODE (operands[1]) == GTU
       || GET_CODE (operands[1]) == LEU
       || ((GET_CODE (operands[1]) == GT || GET_CODE (operands[1]) == LE)
           && extended_count (operands[2], DImode, 1) > 0))"
  [(set (match_dup 4) (and:DI (match_dup 2) (match_dup 5)))
   (set (match_dup 0) (match_dup 6))]
  "
{
  operands[5] = GEN_INT (~ INTVAL (operands[3]));
  operands[6] = gen_rtx_fmt_ee (((GET_CODE (operands[1]) == GTU
                                  || GET_CODE (operands[1]) == GT)
                                 ? NE : EQ),
                                DImode, operands[4], const0_rtx);
}")

;; Prefer to use cmp and arithmetic when possible instead of a cmove.

(define_split
  [(set (match_operand 0 "register_operand" "")
        (if_then_else (match_operator 1 "signed_comparison_operator"
                           [(match_operand:DI 2 "reg_or_0_operand" "")
                            (const_int 0)])
          (match_operand 3 "const_int_operand" "")
          (match_operand 4 "const_int_operand" "")))]
  ""
  [(const_int 0)]
  "
{
  if (alpha_split_conditional_move (GET_CODE (operands[1]), operands[0],
                                    operands[2], operands[3], operands[4]))
    DONE;
  else
    FAIL;
}")

;; ??? Why combine is allowed to create such non-canonical rtl, I don't know.
;; Oh well, we match it in movcc, so it must be partially our fault.
(define_split
  [(set (match_operand 0 "register_operand" "")
        (if_then_else (match_operator 1 "signed_comparison_operator"
                           [(const_int 0)
                            (match_operand:DI 2 "reg_or_0_operand" "")])
          (match_operand 3 "const_int_operand" "")
          (match_operand 4 "const_int_operand" "")))]
  ""
  [(const_int 0)]
  "
{
  if (alpha_split_conditional_move (swap_condition (GET_CODE (operands[1])),
                                    operands[0], operands[2], operands[3],
                                    operands[4]))
    DONE;
  else
    FAIL;
}")

(define_insn_and_split "*cmp_sadd_di"
  [(set (match_operand:DI 0 "register_operand" "=r")
        (plus:DI (if_then_else:DI
                   (match_operator 1 "alpha_zero_comparison_operator"
                     [(match_operand:DI 2 "reg_or_0_operand" "rJ")
                      (const_int 0)])
                   (match_operand:DI 3 "const48_operand" "I")
                   (const_int 0))
                 (match_operand:DI 4 "sext_add_operand" "rIO")))
   (clobber (match_scratch:DI 5 "=r"))]
  ""
  "#"
  "! no_new_pseudos || reload_completed"
  [(set (match_dup 5)
        (match_op_dup:DI 1 [(match_dup 2) (const_int 0)]))
   (set (match_dup 0)
        (plus:DI (mult:DI (match_dup 5) (match_dup 3))
                 (match_dup 4)))]
  "
{
  if (! no_new_pseudos)
    operands[5] = gen_reg_rtx (DImode);
  else if (reg_overlap_mentioned_p (operands[5], operands[4]))
    operands[5] = operands[0];
}")

(define_insn_and_split "*cmp_sadd_si"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (plus:SI (if_then_else:SI
                   (match_operator 1 "alpha_zero_comparison_operator"
                     [(match_operand:DI 2 "reg_or_0_operand" "rJ")
                      (const_int 0)])
                   (match_operand:SI 3 "const48_operand" "I")
                   (const_int 0))
                 (match_operand:SI 4 "sext_add_operand" "rIO")))
   (clobber (match_scratch:SI 5 "=r"))]
  ""
  "#"
  "! no_new_pseudos || reload_completed"
  [(set (match_dup 5)
        (match_op_dup:SI 1 [(match_dup 2) (const_int 0)]))
   (set (match_dup 0)
        (plus:SI (mult:SI (match_dup 5) (match_dup 3))
                 (match_dup 4)))]
  "
{
  if (! no_new_pseudos)
    operands[5] = gen_reg_rtx (DImode);
  else if (reg_overlap_mentioned_p (operands[5], operands[4]))
    operands[5] = operands[0];
}")

(define_insn_and_split "*cmp_sadd_sidi"
  [(set (match_operand:DI 0 "register_operand" "=r")
        (sign_extend:DI
          (plus:SI (if_then_else:SI
                     (match_operator 1 "alpha_zero_comparison_operator"
                       [(match_operand:DI 2 "reg_or_0_operand" "rJ")
                        (const_int 0)])
                     (match_operand:SI 3 "const48_operand" "I")
                     (const_int 0))
                   (match_operand:SI 4 "sext_add_operand" "rIO"))))
   (clobber (match_scratch:SI 5 "=r"))]
  ""
  "#"
  "! no_new_pseudos || reload_completed"
  [(set (match_dup 5)
        (match_op_dup:SI 1 [(match_dup 2) (const_int 0)]))
   (set (match_dup 0)
        (sign_extend:DI (plus:SI (mult:SI (match_dup 5) (match_dup 3))
                                 (match_dup 4))))]
  "
{
  if (! no_new_pseudos)
    operands[5] = gen_reg_rtx (DImode);
  else if (reg_overlap_mentioned_p (operands[5], operands[4]))
    operands[5] = operands[0];
}")

(define_insn_and_split "*cmp_ssub_di"
  [(set (match_operand:DI 0 "register_operand" "=r")
        (minus:DI (if_then_else:DI
                    (match_operator 1 "alpha_zero_comparison_operator"
                      [(match_operand:DI 2 "reg_or_0_operand" "rJ")
                       (const_int 0)])
                    (match_operand:DI 3 "const48_operand" "I")
                    (const_int 0))
                  (match_operand:DI 4 "reg_or_8bit_operand" "rI")))
   (clobber (match_scratch:DI 5 "=r"))]
  ""
  "#"
  "! no_new_pseudos || reload_completed"
  [(set (match_dup 5)
        (match_op_dup:DI 1 [(match_dup 2) (const_int 0)]))
   (set (match_dup 0)
        (minus:DI (mult:DI (match_dup 5) (match_dup 3))
                  (match_dup 4)))]
  "
{
  if (! no_new_pseudos)
    operands[5] = gen_reg_rtx (DImode);
  else if (reg_overlap_mentioned_p (operands[5], operands[4]))
    operands[5] = operands[0];
}")

(define_insn_and_split "*cmp_ssub_si"
  [(set (match_operand:SI 0 "register_operand" "=r")
        (minus:SI (if_then_else:SI
                    (match_operator 1 "alpha_zero_comparison_operator"
                      [(match_operand:DI 2 "reg_or_0_operand" "rJ")
                       (const_int 0)])
                    (match_operand:SI 3 "const48_operand" "I")
                    (const_int 0))
                  (match_operand:SI 4 "reg_or_8bit_operand" "rI")))
   (clobber (match_scratch:SI 5 "=r"))]
  ""
  "#"
  "! no_new_pseudos || reload_completed"
  [(set (match_dup 5)
        (match_op_dup:SI 1 [(match_dup 2) (const_int 0)]))
   (set (match_dup 0)
        (minus:SI (mult:SI (match_dup 5) (match_dup 3))
                 (match_dup 4)))]
  "
{
  if (! no_new_pseudos)
    operands[5] = gen_reg_rtx (DImode);
  else if (reg_overlap_mentioned_p (operands[5], operands[4]))
    operands[5] = operands[0];
}")

(define_insn_and_split "*cmp_ssub_sidi"
  [(set (match_operand:DI 0 "register_operand" "=r")
        (sign_extend:DI
          (minus:SI (if_then_else:SI
                      (match_operator 1 "alpha_zero_comparison_operator"
                        [(match_operand:DI 2 "reg_or_0_operand" "rJ")
                         (const_int 0)])
                      (match_operand:SI 3 "const48_operand" "I")
                      (const_int 0))
                    (match_operand:SI 4 "reg_or_8bit_operand" "rI"))))
   (clobber (match_scratch:SI 5 "=r"))]
  ""
  "#"
  "! no_new_pseudos || reload_completed"
  [(set (match_dup 5)
        (match_op_dup:SI 1 [(match_dup 2) (const_int 0)]))
   (set (match_dup 0)
        (sign_extend:DI (minus:SI (mult:SI (match_dup 5) (match_dup 3))
                                  (match_dup 4))))]
  "
{
  if (! no_new_pseudos)
    operands[5] = gen_reg_rtx (DImode);
  else if (reg_overlap_mentioned_p (operands[5], operands[4]))
    operands[5] = operands[0];
}")
\f
;; Here are the CALL and unconditional branch insns.  Calls on NT and OSF
;; work differently, so we have different patterns for each.

(define_expand "call"
  [(use (match_operand:DI 0 "" ""))
   (use (match_operand 1 "" ""))
   (use (match_operand 2 "" ""))
   (use (match_operand 3 "" ""))]
  ""
  "
{ if (TARGET_WINDOWS_NT)
    emit_call_insn (gen_call_nt (operands[0], operands[1]));
  else if (TARGET_OPEN_VMS)
    emit_call_insn (gen_call_vms (operands[0], operands[2]));
  else
    emit_call_insn (gen_call_osf (operands[0], operands[1]));

  DONE;
}")

(define_expand "sibcall"
  [(call (mem:DI (match_operand 0 "" ""))
                 (match_operand 1 "" ""))]
  "!TARGET_OPEN_VMS && !TARGET_WINDOWS_NT"
  "
{
  if (GET_CODE (operands[0]) != MEM)
    abort ();
  operands[0] = XEXP (operands[0], 0);
}")

(define_expand "call_osf"
  [(parallel [(call (mem:DI (match_operand 0 "" ""))
                    (match_operand 1 "" ""))
              (clobber (reg:DI 27))
              (clobber (reg:DI 26))])]
  ""
  "
{ if (GET_CODE (operands[0]) != MEM)
    abort ();

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

  if (GET_CODE (operands[0]) != SYMBOL_REF
      && ! (GET_CODE (operands[0]) == REG && REGNO (operands[0]) == 27))
    {
      rtx tem = gen_rtx_REG (DImode, 27);
      emit_move_insn (tem, operands[0]);
      operands[0] = tem;
    }
}")

(define_expand "call_nt"
  [(parallel [(call (mem:DI (match_operand 0 "" ""))
                    (match_operand 1 "" ""))
              (clobber (reg:DI 26))])]
  ""
  "
{ if (GET_CODE (operands[0]) != MEM)
    abort ();

  operands[0] = XEXP (operands[0], 0);
  if (GET_CODE (operands[0]) != SYMBOL_REF && GET_CODE (operands[0]) != REG)
    operands[0] = force_reg (DImode, operands[0]);
}")

;;
;; call openvms/alpha
;; op 0: symbol ref for called function
;; op 1: next_arg_reg (argument information value for R25)
;;
(define_expand "call_vms"
  [(parallel [(call (mem:DI (match_operand 0 "" ""))
                    (match_operand 1 "" ""))
              (use (match_dup 2))
              (use (reg:DI 25))
              (use (reg:DI 26))
              (clobber (reg:DI 27))])]
  ""
  "
{ if (GET_CODE (operands[0]) != MEM)
    abort ();

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

  /* Always load AI with argument information, then handle symbolic and
     indirect call differently.  Load RA and set operands[2] to PV in
     both cases.  */

  emit_move_insn (gen_rtx_REG (DImode, 25), operands[1]);
  if (GET_CODE (operands[0]) == SYMBOL_REF)
    {
      rtx linkage = alpha_need_linkage (XSTR (operands[0], 0), 0);

      emit_move_insn (gen_rtx_REG (Pmode, 26), gen_rtx_MEM (Pmode, linkage));
      operands[2]
        = validize_mem (gen_rtx_MEM (Pmode, plus_constant (linkage, 8)));
    }
  else
    {
      emit_move_insn (gen_rtx_REG (Pmode, 26),
                      gen_rtx_MEM (Pmode, plus_constant (operands[0], 8)));
      operands[2] = operands[0];
    }

}")

(define_expand "call_value"
  [(use (match_operand 0 "" ""))
   (use (match_operand:DI 1 "" ""))
   (use (match_operand 2 "" ""))
   (use (match_operand 3 "" ""))
   (use (match_operand 4 "" ""))]
  ""
  "
{ if (TARGET_WINDOWS_NT)
    emit_call_insn (gen_call_value_nt (operands[0], operands[1], operands[2]));
  else if (TARGET_OPEN_VMS)
    emit_call_insn (gen_call_value_vms (operands[0], operands[1],
                                        operands[3]));
  else
    emit_call_insn (gen_call_value_osf (operands[0], operands[1],
                                        operands[2]));
  DONE;
}")

(define_expand "sibcall_value"
  [(set (match_operand 0 "" "")
        (call (mem:DI (match_operand 1 "" ""))
              (match_operand 2 "" "")))]
  "!TARGET_OPEN_VMS && !TARGET_WINDOWS_NT"
  "
{
  if (GET_CODE (operands[1]) != MEM)
    abort ();
  operands[1] = XEXP (operands[1], 0);
}")

(define_expand "call_value_osf"
  [(parallel [(set (match_operand 0 "" "")
                   (call (mem:DI (match_operand 1 "" ""))
                         (match_operand 2 "" "")))
              (clobber (reg:DI 27))
              (clobber (reg:DI 26))])]
  ""
  "
{ if (GET_CODE (operands[1]) != MEM)
    abort ();

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

  if (GET_CODE (operands[1]) != SYMBOL_REF
      && ! (GET_CODE (operands[1]) == REG && REGNO (operands[1]) == 27))
    {
      rtx tem = gen_rtx_REG (DImode, 27);
      emit_move_insn (tem, operands[1]);
      operands[1] = tem;
    }
}")

(define_expand "call_value_nt"
  [(parallel [(set (match_operand 0 "" "")
                   (call (mem:DI (match_operand 1 "" ""))
                         (match_operand 2 "" "")))
              (clobber (reg:DI 26))])]
  ""
  "
{ if (GET_CODE (operands[1]) != MEM)
    abort ();

  operands[1] = XEXP (operands[1], 0);
  if (GET_CODE (operands[1]) != SYMBOL_REF && GET_CODE (operands[1]) != REG)
    operands[1] = force_reg (DImode, operands[1]);
}")

(define_expand "call_value_vms"
  [(parallel [(set (match_operand 0 "" "")
                   (call (mem:DI (match_operand:DI 1 "" ""))
                         (match_operand 2 "" "")))
              (use (match_dup 3))
              (use (reg:DI 25))
              (use (reg:DI 26))
              (clobber (reg:DI 27))])]
  ""
  "
{ if (GET_CODE (operands[1]) != MEM)
    abort ();

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

  /* Always load AI with argument information, then handle symbolic and
     indirect call differently.  Load RA and set operands[3] to PV in
     both cases.  */

  emit_move_insn (gen_rtx_REG (DImode, 25), operands[2]);
  if (GET_CODE (operands[1]) == SYMBOL_REF)
    {
      rtx linkage = alpha_need_linkage (XSTR (operands[1], 0), 0);

      emit_move_insn (gen_rtx_REG (Pmode, 26), gen_rtx_MEM (Pmode, linkage));
      operands[3]
        = validize_mem (gen_rtx_MEM (Pmode, plus_constant (linkage, 8)));
    }
  else
    {
      emit_move_insn (gen_rtx_REG (Pmode, 26),
                      gen_rtx_MEM (Pmode, plus_constant (operands[1], 8)));
      operands[3] = operands[1];
    }
}")

(define_insn "*call_osf_1"
  [(call (mem:DI (match_operand:DI 0 "call_operand" "r,R,i"))
         (match_operand 1 "" ""))
   (clobber (reg:DI 27))
   (clobber (reg:DI 26))]
  "! TARGET_WINDOWS_NT && ! TARGET_OPEN_VMS"
  "@
   jsr $26,($27),0\;ldgp $29,0($26)
   bsr $26,$%0..ng
   jsr $26,%0\;ldgp $29,0($26)"
  [(set_attr "type" "jsr")
   (set_attr "length" "12,*,16")])
      
(define_insn "*sibcall_osf_1"
  [(call (mem:DI (match_operand:DI 0 "call_operand" "R,i"))
         (match_operand 1 "" ""))]
  "! TARGET_WINDOWS_NT && ! TARGET_OPEN_VMS"
  "@
   br $31,$%0..ng
   jmp $31,%0"
  [(set_attr "type" "jsr")
   (set_attr "length" "*,8")])

(define_insn "*call_nt_1"
  [(call (mem:DI (match_operand:DI 0 "call_operand" "r,R,i"))
         (match_operand 1 "" ""))
   (clobber (reg:DI 26))]
  "TARGET_WINDOWS_NT"
  "@
   jsr $26,(%0)
   bsr $26,%0
   jsr $26,%0"
  [(set_attr "type" "jsr")
   (set_attr "length" "*,*,12")])
      
(define_insn "*call_vms_1"
  [(call (mem:DI (match_operand:DI 0 "call_operand" "r,i"))
         (match_operand 1 "" ""))
   (use (match_operand:DI 2 "nonimmediate_operand" "r,m"))
   (use (reg:DI 25))
   (use (reg:DI 26))
   (clobber (reg:DI 27))]
  "TARGET_OPEN_VMS"
  "@
   mov %2,$27\;jsr $26,0\;ldq $27,0($29)
   ldq $27,%2\;jsr $26,%0\;ldq $27,0($29)"
  [(set_attr "type" "jsr")
   (set_attr "length" "12,16")])

;; Call subroutine returning any type.

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

  emit_call_insn (GEN_CALL (operands[0], const0_rtx, NULL, const0_rtx));

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

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

  DONE;
}")

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

(define_insn "blockage"
  [(unspec_volatile [(const_int 0)] 1)]
  ""
  ""
  [(set_attr "length" "0")])

(define_insn "jump"
  [(set (pc)
        (label_ref (match_operand 0 "" "")))]
  ""
  "br $31,%l0"
  [(set_attr "type" "ibr")])

(define_expand "return"
  [(return)]
  "direct_return ()"
  "")

(define_insn "*return_internal"
  [(return)]
  "reload_completed"
  "ret $31,($26),1"
  [(set_attr "type" "ibr")])

(define_insn "indirect_jump"
  [(set (pc) (match_operand:DI 0 "register_operand" "r"))]
  ""
  "jmp $31,(%0),0"
  [(set_attr "type" "ibr")])

(define_expand "tablejump"
  [(use (match_operand:SI 0 "register_operand" ""))
   (use (match_operand:SI 1 "" ""))]
  ""
  "
{
  if (TARGET_WINDOWS_NT)
    emit_jump_insn (gen_tablejump_nt (operands[0], operands[1]));
  else if (TARGET_OPEN_VMS)
    emit_jump_insn (gen_tablejump_vms (operands[0], operands[1]));
  else
    emit_jump_insn (gen_tablejump_osf (operands[0], operands[1]));

  DONE;
}")

(define_expand "tablejump_osf"
  [(set (match_dup 3)
        (sign_extend:DI (match_operand:SI 0 "register_operand" "")))
   (parallel [(set (pc)
                   (plus:DI (match_dup 3)
                            (label_ref (match_operand 1 "" ""))))
              (clobber (match_scratch:DI 2 "=r"))])]
  ""
  "
{ operands[3] = gen_reg_rtx (DImode); }")

(define_expand "tablejump_nt"
  [(set (match_dup 3)
        (sign_extend:DI (match_operand:SI 0 "register_operand" "")))
   (parallel [(set (pc)
                   (match_dup 3))
              (use (label_ref (match_operand 1 "" "")))])]
  ""
  "
{ operands[3] = gen_reg_rtx (DImode); }")

;;
;; tablejump, openVMS way
;; op 0: offset
;; op 1: label preceding jump-table
;;
(define_expand "tablejump_vms"
  [(set (match_dup 2)
      (match_operand:DI 0 "register_operand" ""))
        (set (pc)
        (plus:DI (match_dup 2)
                (label_ref (match_operand 1 "" ""))))]
  ""
  "
{ operands[2] = gen_reg_rtx (DImode); }")

(define_insn ""
  [(set (pc)
        (plus (match_operand:DI 0 "register_operand" "r")
              (label_ref (match_operand 1 "" ""))))
   (clobber (match_scratch:DI 2 "=r"))]
  "! TARGET_WINDOWS_NT && ! TARGET_OPEN_VMS && next_active_insn (insn) != 0
   && GET_CODE (PATTERN (next_active_insn (insn))) == ADDR_DIFF_VEC
   && PREV_INSN (next_active_insn (insn)) == operands[1]"
  "*
{ rtx best_label = 0;
  rtx jump_table_insn = next_active_insn (operands[1]);

  if (GET_CODE (jump_table_insn) == JUMP_INSN
      && GET_CODE (PATTERN (jump_table_insn)) == ADDR_DIFF_VEC)
    {
      rtx jump_table = PATTERN (jump_table_insn);
      int n_labels = XVECLEN (jump_table, 1);
      int best_count = -1;
      int i, j;

      for (i = 0; i < n_labels; i++)
        {
          int count = 1;

          for (j = i + 1; j < n_labels; j++)
            if (XEXP (XVECEXP (jump_table, 1, i), 0)
                == XEXP (XVECEXP (jump_table, 1, j), 0))
              count++;

          if (count > best_count)
            best_count = count, best_label = XVECEXP (jump_table, 1, i);
        }
    }

  if (best_label)
    {
      operands[3] = best_label;
      return \"addq %0,$29,%2\;jmp $31,(%2),%3\";
    }
  else
    return \"addq %0,$29,%2\;jmp $31,(%2),0\";
}"
  [(set_attr "type" "ibr")
   (set_attr "length" "8")])

(define_insn ""
  [(set (pc)
        (match_operand:DI 0 "register_operand" "r"))
   (use (label_ref (match_operand 1 "" "")))]
  "TARGET_WINDOWS_NT && next_active_insn (insn) != 0
   && GET_CODE (PATTERN (next_active_insn (insn))) == ADDR_DIFF_VEC
   && PREV_INSN (next_active_insn (insn)) == operands[1]"
  "*
{ rtx best_label = 0;
  rtx jump_table_insn = next_active_insn (operands[1]);

  if (GET_CODE (jump_table_insn) == JUMP_INSN
      && GET_CODE (PATTERN (jump_table_insn)) == ADDR_DIFF_VEC)
    {
      rtx jump_table = PATTERN (jump_table_insn);
      int n_labels = XVECLEN (jump_table, 1);
      int best_count = -1;
      int i, j;

      for (i = 0; i < n_labels; i++)
        {
          int count = 1;

          for (j = i + 1; j < n_labels; j++)
            if (XEXP (XVECEXP (jump_table, 1, i), 0)
                == XEXP (XVECEXP (jump_table, 1, j), 0))
              count++;

          if (count > best_count)
            best_count = count, best_label = XVECEXP (jump_table, 1, i);
        }
    }

  if (best_label)
    {
      operands[2] = best_label;
      return \"jmp $31,(%0),%2\";
    }
  else
    return \"jmp $31,(%0),0\";
}"
  [(set_attr "type" "ibr")])

;;
;; op 0 is table offset
;; op 1 is table label
;;

(define_insn ""
  [(set (pc)
        (plus (match_operand:DI 0 "register_operand" "r")
              (label_ref (match_operand 1 "" ""))))]
  "TARGET_OPEN_VMS"
  "jmp $31,(%0),0"
  [(set_attr "type" "ibr")])

;; Cache flush.  Used by INITIALIZE_TRAMPOLINE.  0x86 is PAL_imb, but we don't
;; want to have to include pal.h in our .s file.
;;
;; Technically the type for call_pal is jsr, but we use that for determining
;; if we need a GP.  Use ibr instead since it has the same EV5 scheduling
;; characteristics.
(define_insn "imb"
  [(unspec_volatile [(const_int 0)] 0)]
  ""
  "call_pal 0x86"
  [(set_attr "type" "ibr")])
\f
;; Finally, we have the basic data motion insns.  The byte and word insns
;; are done via define_expand.  Start with the floating-point insns, since
;; they are simpler.

(define_insn ""
  [(set (match_operand:SF 0 "nonimmediate_operand" "=f,f,*r,*r,m,m")
        (match_operand:SF 1 "input_operand" "fG,m,*rG,m,fG,*r"))]
  "TARGET_FPREGS && ! TARGET_FIX
   && (register_operand (operands[0], SFmode)
       || reg_or_fp0_operand (operands[1], SFmode))"
  "@
   fmov %R1,%0
   ld%, %0,%1
   mov %r1,%0
   ldl %0,%1
   st%, %R1,%0
   stl %r1,%0"
  [(set_attr "type" "fcpys,fld,ilog,ild,fst,ist")])

(define_insn ""
  [(set (match_operand:SF 0 "nonimmediate_operand" "=f,f,*r,*r,m,m,f,*r")
        (match_operand:SF 1 "input_operand" "fG,m,*rG,m,fG,*r,*r,f"))]
  "TARGET_FPREGS && TARGET_FIX
   && (register_operand (operands[0], SFmode)
       || reg_or_fp0_operand (operands[1], SFmode))"
  "@
   fmov %R1,%0
   ld%, %0,%1
   mov %r1,%0
   ldl %0,%1
   st%, %R1,%0
   stl %r1,%0
   itofs %1,%0
   ftois %1,%0"
  [(set_attr "type" "fcpys,fld,ilog,ild,fst,ist,itof,ftoi")])

(define_insn ""
  [(set (match_operand:SF 0 "nonimmediate_operand" "=r,r,m")
        (match_operand:SF 1 "input_operand" "rG,m,r"))]
  "! TARGET_FPREGS
   && (register_operand (operands[0], SFmode)
       || reg_or_fp0_operand (operands[1], SFmode))"
  "@
   mov %r1,%0
   ldl %0,%1
   stl %r1,%0"
  [(set_attr "type" "ilog,ild,ist")])

(define_insn ""
  [(set (match_operand:DF 0 "nonimmediate_operand" "=f,f,*r,*r,m,m")
        (match_operand:DF 1 "input_operand" "fG,m,*rG,m,fG,*r"))]
  "TARGET_FPREGS && ! TARGET_FIX
   && (register_operand (operands[0], DFmode)
       || reg_or_fp0_operand (operands[1], DFmode))"
  "@
   fmov %R1,%0
   ld%- %0,%1
   mov %r1,%0
   ldq %0,%1
   st%- %R1,%0
   stq %r1,%0"
  [(set_attr "type" "fcpys,fld,ilog,ild,fst,ist")])

(define_insn ""
  [(set (match_operand:DF 0 "nonimmediate_operand" "=f,f,*r,*r,m,m,f,*r")
        (match_operand:DF 1 "input_operand" "fG,m,*rG,m,fG,*r,*r,f"))]
  "TARGET_FPREGS && TARGET_FIX
   && (register_operand (operands[0], DFmode)
       || reg_or_fp0_operand (operands[1], DFmode))"
  "@
   fmov %R1,%0
   ld%- %0,%1
   mov %r1,%0
   ldq %0,%1
   st%- %R1,%0
   stq %r1,%0
   itoft %1,%0
   ftoit %1,%0"
  [(set_attr "type" "fcpys,fld,ilog,ild,fst,ist,itof,ftoi")])

(define_insn ""
  [(set (match_operand:DF 0 "nonimmediate_operand" "=r,r,m")
        (match_operand:DF 1 "input_operand" "rG,m,r"))]
  "! TARGET_FPREGS
   && (register_operand (operands[0], DFmode)
       || reg_or_fp0_operand (operands[1], DFmode))"
  "@
   mov %r1,%0
   ldq %0,%1
   stq %r1,%0"
  [(set_attr "type" "ilog,ild,ist")])

;; Subregs suck for register allocation.  Pretend we can move TFmode
;; data between general registers until after reload.
(define_insn ""
  [(set (match_operand:TF 0 "nonimmediate_operand" "=r,o")
        (match_operand:TF 1 "input_operand" "roG,r"))]
  "register_operand (operands[0], TFmode)
   || reg_or_fp0_operand (operands[1], TFmode)"
  "#")

(define_split
  [(set (match_operand:TF 0 "nonimmediate_operand" "")
        (match_operand:TF 1 "input_operand" ""))]
  "reload_completed"
  [(set (match_dup 0) (match_dup 2))
   (set (match_dup 1) (match_dup 3))]
  "
{
  alpha_split_tfmode_pair (operands);
  if (rtx_equal_p (operands[0], operands[3]))
    {
      rtx tmp;
      tmp = operands[0], operands[0] = operands[1], operands[1] = tmp;
      tmp = operands[2], operands[2] = operands[3], operands[3] = tmp;
    }
}")

(define_expand "movsf"
  [(set (match_operand:SF 0 "nonimmediate_operand" "")
        (match_operand:SF 1 "general_operand" ""))]
  ""
  "
{
  if (GET_CODE (operands[0]) == MEM
      && ! reg_or_fp0_operand (operands[1], SFmode))
    operands[1] = force_reg (SFmode, operands[1]);
}")

(define_expand "movdf"
  [(set (match_operand:DF 0 "nonimmediate_operand" "")
        (match_operand:DF 1 "general_operand" ""))]
  ""
  "
{
  if (GET_CODE (operands[0]) == MEM
      && ! reg_or_fp0_operand (operands[1], DFmode))
    operands[1] = force_reg (DFmode, operands[1]);
}")

(define_expand "movtf"
  [(set (match_operand:TF 0 "nonimmediate_operand" "")
        (match_operand:TF 1 "general_operand" ""))]
  ""
  "
{
  if (GET_CODE (operands[0]) == MEM
      && ! reg_or_fp0_operand (operands[1], TFmode))
    operands[1] = force_reg (TFmode, operands[1]);
}")

(define_insn ""
  [(set (match_operand:SI 0 "nonimmediate_operand" "=r,r,r,r,m,*f,*f,m")
        (match_operand:SI 1 "input_operand" "rJ,K,L,m,rJ,*fJ,m,*f"))]
  "! TARGET_WINDOWS_NT && ! TARGET_OPEN_VMS && ! TARGET_FIX
   && (register_operand (operands[0], SImode)
       || reg_or_0_operand (operands[1], SImode))"
  "@
   mov %r1,%0
   lda %0,%1
   ldah %0,%h1
   ldl %0,%1
   stl %r1,%0
   fmov %R1,%0
   ld%, %0,%1
   st%, %R1,%0"
  [(set_attr "type" "ilog,iadd,iadd,ild,ist,fcpys,fld,fst")])

(define_insn ""
  [(set (match_operand:SI 0 "nonimmediate_operand" "=r,r,r,r,m,*f,*f,m,r,*f")
        (match_operand:SI 1 "input_operand" "rJ,K,L,m,rJ,*fJ,m,*f,*f,r"))]
  "! TARGET_WINDOWS_NT && ! TARGET_OPEN_VMS && TARGET_FIX
   && (register_operand (operands[0], SImode)
       || reg_or_0_operand (operands[1], SImode))"
  "@
   mov %r1,%0
   lda %0,%1
   ldah %0,%h1
   ldl %0,%1
   stl %r1,%0
   fmov %R1,%0
   ld%, %0,%1
   st%, %R1,%0
   ftois %1,%0
   itofs %1,%0"
  [(set_attr "type" "ilog,iadd,iadd,ild,ist,fcpys,fld,fst,ftoi,itof")])

(define_insn ""
  [(set (match_operand:SI 0 "nonimmediate_operand" "=r,r,r,r,r,m,*f,*f,m")
        (match_operand:SI 1 "input_operand" "rJ,K,L,s,m,rJ,*fJ,m,*f"))]
  "(TARGET_WINDOWS_NT || TARGET_OPEN_VMS)
    && (register_operand (operands[0], SImode)
        || reg_or_0_operand (operands[1], SImode))"
  "@
   mov %1,%0
   lda %0,%1
   ldah %0,%h1
   lda %0,%1
   ldl %0,%1
   stl %r1,%0
   fmov %R1,%0
   ld%, %0,%1
   st%, %R1,%0"
  [(set_attr "type" "ilog,iadd,iadd,ldsym,ild,ist,fcpys,fld,fst")])

(define_insn ""
  [(set (match_operand:HI 0 "register_operand" "=r,r")
        (match_operand:HI 1 "input_operand" "rJ,n"))]
  "! TARGET_BWX
   && (register_operand (operands[0], HImode)
       || register_operand (operands[1], HImode))"
  "@
   mov %r1,%0
   lda %0,%L1"
  [(set_attr "type" "ilog,iadd")])

(define_insn ""
  [(set (match_operand:HI 0 "nonimmediate_operand" "=r,r,r,m")
        (match_operand:HI 1 "input_operand" "rJ,n,m,rJ"))]
  "TARGET_BWX
   && (register_operand (operands[0], HImode)
       || reg_or_0_operand (operands[1], HImode))"
  "@
   mov %r1,%0
   lda %0,%L1
   ldwu %0,%1
   stw %r1,%0"
  [(set_attr "type" "ilog,iadd,ild,ist")])

(define_insn ""
  [(set (match_operand:QI 0 "register_operand" "=r,r")
        (match_operand:QI 1 "input_operand" "rJ,n"))]
  "! TARGET_BWX
   && (register_operand (operands[0], QImode)
       || register_operand (operands[1], QImode))"
  "@
   mov %r1,%0
   lda %0,%L1"
  [(set_attr "type" "ilog,iadd")])

(define_insn ""
  [(set (match_operand:QI 0 "nonimmediate_operand" "=r,r,r,m")
        (match_operand:QI 1 "input_operand" "rJ,n,m,rJ"))]
  "TARGET_BWX
   && (register_operand (operands[0], QImode)
       || reg_or_0_operand (operands[1], QImode))"
  "@
   mov %r1,%0
   lda %0,%L1
   ldbu %0,%1
   stb %r1,%0"
  [(set_attr "type" "ilog,iadd,ild,ist")])

;; We do two major things here: handle mem->mem and construct long
;; constants.

(define_expand "movsi"
  [(set (match_operand:SI 0 "nonimmediate_operand" "")
        (match_operand:SI 1 "general_operand" ""))]
  ""
  "
{
  if (GET_CODE (operands[0]) == MEM
      && ! reg_or_0_operand (operands[1], SImode))
    operands[1] = force_reg (SImode, operands[1]);

  if (! CONSTANT_P (operands[1]) || input_operand (operands[1], SImode))
    ;
  else if (GET_CODE (operands[1]) == CONST_INT)
    {
      operands[1]
        = alpha_emit_set_const (operands[0], SImode, INTVAL (operands[1]), 3);
      if (rtx_equal_p (operands[0], operands[1]))
        DONE;
    }
}")

;; Split a load of a large constant into the appropriate two-insn
;; sequence.

(define_split
  [(set (match_operand:SI 0 "register_operand" "")
        (match_operand:SI 1 "const_int_operand" ""))]
  "! add_operand (operands[1], SImode)"
  [(set (match_dup 0) (match_dup 2))
   (set (match_dup 0) (plus:SI (match_dup 0) (match_dup 3)))]
  "
{ rtx tem
    = alpha_emit_set_const (operands[0], SImode, INTVAL (operands[1]), 2);

  if (tem == operands[0])
    DONE;
  else
    FAIL;
}")

(define_insn ""
  [(set (match_operand:DI 0 "nonimmediate_operand" "=r,r,r,r,r,m,*f,*f,Q")
        (match_operand:DI 1 "input_operand" "rJ,K,L,s,m,rJ,*fJ,Q,*f"))]
  "! TARGET_FIX
   && (register_operand (operands[0], DImode)
       || reg_or_0_operand (operands[1], DImode))"
  "@
   mov %r1,%0
   lda %0,%1
   ldah %0,%h1
   lda %0,%1
   ldq%A1 %0,%1
   stq%A0 %r1,%0
   fmov %R1,%0
   ldt %0,%1
   stt %R1,%0"
  [(set_attr "type" "ilog,iadd,iadd,ldsym,ild,ist,fcpys,fld,fst")])

(define_insn ""
  [(set (match_operand:DI 0 "nonimmediate_operand" "=r,r,r,r,r,m,*f,*f,Q,r,*f")
        (match_operand:DI 1 "input_operand" "rJ,K,L,s,m,rJ,*fJ,Q,*f,*f,r"))]
  "TARGET_FIX
   && (register_operand (operands[0], DImode)
       || reg_or_0_operand (operands[1], DImode))"
  "@
   mov %r1,%0
   lda %0,%1
   ldah %0,%h1
   lda %0,%1
   ldq%A1 %0,%1
   stq%A0 %r1,%0
   fmov %R1,%0
   ldt %0,%1
   stt %R1,%0
   ftoit %1,%0
   itoft %1,%0"
  [(set_attr "type" "ilog,iadd,iadd,ldsym,ild,ist,fcpys,fld,fst,ftoi,itof")])

;; We do three major things here: handle mem->mem, put 64-bit constants in
;; memory, and construct long 32-bit constants.

(define_expand "movdi"
  [(set (match_operand:DI 0 "nonimmediate_operand" "")
        (match_operand:DI 1 "general_operand" ""))]
  ""
  "
{
  rtx tem;

  if (GET_CODE (operands[0]) == MEM
      && ! reg_or_0_operand (operands[1], DImode))
    operands[1] = force_reg (DImode, operands[1]);

  if (! CONSTANT_P (operands[1]) || input_operand (operands[1], DImode))
    ;
  else if (GET_CODE (operands[1]) == CONST_INT
           && (tem = alpha_emit_set_const (operands[0], DImode,
                                           INTVAL (operands[1]), 3)) != 0)
    {
      if (rtx_equal_p (tem, operands[0]))
        DONE;
      else
        operands[1] = tem;
    }
  else if (CONSTANT_P (operands[1]))
    {
      if (TARGET_BUILD_CONSTANTS)
        {
          HOST_WIDE_INT i0, i1;

          if (GET_CODE (operands[1]) == CONST_INT)
            {
              i0 = INTVAL (operands[1]);
              i1 = -(i0 < 0);
            }
          else if (GET_CODE (operands[1]) == CONST_DOUBLE)
            {
#if HOST_BITS_PER_WIDE_INT >= 64
              i0 = CONST_DOUBLE_LOW (operands[1]);
              i1 = -(i0 < 0);
#else
              i0 = CONST_DOUBLE_LOW (operands[1]);
              i1 = CONST_DOUBLE_HIGH (operands[1]);
#endif
            }
          else
            abort();
          
          tem = alpha_emit_set_long_const (operands[0], i0, i1);
          if (rtx_equal_p (tem, operands[0]))
            DONE;
          else
            operands[1] = tem;
        }
      else
        {
          operands[1] = force_const_mem (DImode, operands[1]);
          if (reload_in_progress)
            {
              emit_move_insn (operands[0], XEXP (operands[1], 0));
              operands[1] = copy_rtx (operands[1]);
              XEXP (operands[1], 0) = operands[0];
            }
          else
            operands[1] = validize_mem (operands[1]);
        }
    }
  else
    abort ();
}")

;; Split a load of a large constant into the appropriate two-insn
;; sequence.

(define_split
  [(set (match_operand:DI 0 "register_operand" "")
        (match_operand:DI 1 "const_int_operand" ""))]
  "! add_operand (operands[1], DImode)"
  [(set (match_dup 0) (match_dup 2))
   (set (match_dup 0) (plus:DI (match_dup 0) (match_dup 3)))]
  "
{ rtx tem
    = alpha_emit_set_const (operands[0], DImode, INTVAL (operands[1]), 2);

  if (tem == operands[0])
    DONE;
  else
    FAIL;
}")

;; These are the partial-word cases.
;;
;; First we have the code to load an aligned word.  Operand 0 is the register
;; in which to place the result.  It's mode is QImode or HImode.  Operand 1
;; is an SImode MEM at the low-order byte of the proper word.  Operand 2 is the
;; number of bits within the word that the value is.  Operand 3 is an SImode
;; scratch register.  If operand 0 is a hard register, operand 3 may be the
;; same register.  It is allowed to conflict with operand 1 as well.

(define_expand "aligned_loadqi"
  [(set (match_operand:SI 3 "register_operand" "")
        (match_operand:SI 1 "memory_operand" ""))
   (set (subreg:DI (match_operand:QI 0 "register_operand" "") 0)
        (zero_extract:DI (subreg:DI (match_dup 3) 0)
                         (const_int 8)
                         (match_operand:DI 2 "const_int_operand" "")))]
         
  ""
  "")
  
(define_expand "aligned_loadhi"
  [(set (match_operand:SI 3 "register_operand" "")
        (match_operand:SI 1 "memory_operand" ""))
   (set (subreg:DI (match_operand:HI 0 "register_operand" "") 0)
        (zero_extract:DI (subreg:DI (match_dup 3) 0)
                         (const_int 16)
                         (match_operand:DI 2 "const_int_operand" "")))]
         
  ""
  "")
  
;; Similar for unaligned loads, where we use the sequence from the
;; Alpha Architecture manual.
;;
;; Operand 1 is the address.  Operands 2 and 3 are temporaries, where
;; operand 3 can overlap the input and output registers.

(define_expand "unaligned_loadqi"
  [(set (match_operand:DI 2 "register_operand" "")
        (mem:DI (and:DI (match_operand:DI 1 "address_operand" "")
                        (const_int -8))))
   (set (match_operand:DI 3 "register_operand" "")
        (match_dup 1))
   (set (subreg:DI (match_operand:QI 0 "register_operand" "") 0)
        (zero_extract:DI (match_dup 2)
                         (const_int 8)
                         (ashift:DI (match_dup 3) (const_int 3))))]
  ""
  "")

(define_expand "unaligned_loadhi"
  [(set (match_operand:DI 2 "register_operand" "")
        (mem:DI (and:DI (match_operand:DI 1 "address_operand" "")
                        (const_int -8))))
   (set (match_operand:DI 3 "register_operand" "")
        (match_dup 1))
   (set (subreg:DI (match_operand:QI 0 "register_operand" "") 0)
        (zero_extract:DI (match_dup 2)
                         (const_int 16)
                         (ashift:DI (match_dup 3) (const_int 3))))]
  ""
  "")

;; Storing an aligned byte or word requires two temporaries.  Operand 0 is the
;; aligned SImode MEM.  Operand 1 is the register containing the 
;; byte or word to store.  Operand 2 is the number of bits within the word that
;; the value should be placed.  Operands 3 and 4 are SImode temporaries.

(define_expand "aligned_store"
  [(set (match_operand:SI 3 "register_operand" "")
        (match_operand:SI 0 "memory_operand" ""))
   (set (subreg:DI (match_dup 3) 0)
        (and:DI (subreg:DI (match_dup 3) 0) (match_dup 5)))
   (set (subreg:DI (match_operand:SI 4 "register_operand" "") 0)
        (ashift:DI (zero_extend:DI (match_operand 1 "register_operand" ""))
                   (match_operand:DI 2 "const_int_operand" "")))
   (set (subreg:DI (match_dup 4) 0)
        (ior:DI (subreg:DI (match_dup 4) 0) (subreg:DI (match_dup 3) 0)))
   (set (match_dup 0) (match_dup 4))]
  ""
  "
{ operands[5] = GEN_INT (~ (GET_MODE_MASK (GET_MODE (operands[1]))
                            << INTVAL (operands[2])));
}")

;; For the unaligned byte and halfword cases, we use code similar to that
;; in the ;; Architecture book, but reordered to lower the number of registers
;; required.  Operand 0 is the address.  Operand 1 is the data to store.
;; Operands 2, 3, and 4 are DImode temporaries, where operands 2 and 4 may
;; be the same temporary, if desired.  If the address is in a register,
;; operand 2 can be that register.

(define_expand "unaligned_storeqi"
  [(set (match_operand:DI 3 "register_operand" "")
        (mem:DI (and:DI (match_operand:DI 0 "address_operand" "")
                        (const_int -8))))
   (set (match_operand:DI 2 "register_operand" "")
        (match_dup 0))
   (set (match_dup 3)
        (and:DI (not:DI (ashift:DI (const_int 255)
                                   (ashift:DI (match_dup 2) (const_int 3))))
                (match_dup 3)))
   (set (match_operand:DI 4 "register_operand" "")
        (ashift:DI (zero_extend:DI (match_operand:QI 1 "register_operand" ""))
                   (ashift:DI (match_dup 2) (const_int 3))))
   (set (match_dup 4) (ior:DI (match_dup 4) (match_dup 3)))
   (set (mem:DI (and:DI (match_dup 0) (const_int -8)))
        (match_dup 4))]
  ""
  "")

(define_expand "unaligned_storehi"
  [(set (match_operand:DI 3 "register_operand" "")
        (mem:DI (and:DI (match_operand:DI 0 "address_operand" "")
                        (const_int -8))))
   (set (match_operand:DI 2 "register_operand" "")
        (match_dup 0))
   (set (match_dup 3)
        (and:DI (not:DI (ashift:DI (const_int 65535)
                                   (ashift:DI (match_dup 2) (const_int 3))))
                (match_dup 3)))
   (set (match_operand:DI 4 "register_operand" "")
        (ashift:DI (zero_extend:DI (match_operand:HI 1 "register_operand" ""))
                   (ashift:DI (match_dup 2) (const_int 3))))
   (set (match_dup 4) (ior:DI (match_dup 4) (match_dup 3)))
   (set (mem:DI (and:DI (match_dup 0) (const_int -8)))
        (match_dup 4))]
  ""
  "")
\f
;; Here are the define_expand's for QI and HI moves that use the above
;; patterns.  We have the normal sets, plus the ones that need scratch
;; registers for reload.

(define_expand "movqi"
  [(set (match_operand:QI 0 "nonimmediate_operand" "")
        (match_operand:QI 1 "general_operand" ""))]
  ""
  "
{
  if (TARGET_BWX)
    {
      if (GET_CODE (operands[0]) == MEM
          && ! reg_or_0_operand (operands[1], QImode))
        operands[1] = force_reg (QImode, operands[1]);

      if (GET_CODE (operands[1]) == CONST_INT
               && ! input_operand (operands[1], QImode))
        {
          operands[1] = alpha_emit_set_const (operands[0], QImode,
                                              INTVAL (operands[1]), 3);

          if (rtx_equal_p (operands[0], operands[1]))
            DONE;
        }

      goto def;
    }

  /* If the output is not a register, the input must be.  */
  if (GET_CODE (operands[0]) == MEM)
    operands[1] = force_reg (QImode, operands[1]);

  /* Handle four memory cases, unaligned and aligned for either the input
     or the output.  The only case where we can be called during reload is
     for aligned loads; all other cases require temporaries.  */

  if (GET_CODE (operands[1]) == MEM
      || (GET_CODE (operands[1]) == SUBREG
          && GET_CODE (SUBREG_REG (operands[1])) == MEM)
      || (reload_in_progress && GET_CODE (operands[1]) == REG
          && REGNO (operands[1]) >= FIRST_PSEUDO_REGISTER)
      || (reload_in_progress && GET_CODE (operands[1]) == SUBREG
          && GET_CODE (SUBREG_REG (operands[1])) == REG
          && REGNO (SUBREG_REG (operands[1])) >= FIRST_PSEUDO_REGISTER))
    {
      if (aligned_memory_operand (operands[1], QImode))
        {
          if (reload_in_progress)
            {
              emit_insn (gen_reload_inqi_help
                         (operands[0], operands[1],
                          gen_rtx_REG (SImode, REGNO (operands[0]))));
            }
          else
            {
              rtx aligned_mem, bitnum;
              rtx scratch = gen_reg_rtx (SImode);

              get_aligned_mem (operands[1], &aligned_mem, &bitnum);

              emit_insn (gen_aligned_loadqi (operands[0], aligned_mem, bitnum,
                                             scratch));
            }
        }
      else
        {
          /* Don't pass these as parameters since that makes the generated
             code depend on parameter evaluation order which will cause
             bootstrap failures.  */

          rtx temp1 = gen_reg_rtx (DImode);
          rtx temp2 = gen_reg_rtx (DImode);
          rtx seq
            = gen_unaligned_loadqi (operands[0],
                                    get_unaligned_address (operands[1], 0),
                                    temp1, temp2);

          alpha_set_memflags (seq, operands[1]);
          emit_insn (seq);
        }

      DONE;
    }

  else if (GET_CODE (operands[0]) == MEM
           || (GET_CODE (operands[0]) == SUBREG 
               && GET_CODE (SUBREG_REG (operands[0])) == MEM)
           || (reload_in_progress && GET_CODE (operands[0]) == REG
               && REGNO (operands[0]) >= FIRST_PSEUDO_REGISTER)
           || (reload_in_progress && GET_CODE (operands[0]) == SUBREG
               && GET_CODE (SUBREG_REG (operands[0])) == REG
               && REGNO (operands[0]) >= FIRST_PSEUDO_REGISTER))
    {
      if (aligned_memory_operand (operands[0], QImode))
        {
          rtx aligned_mem, bitnum;
          rtx temp1 = gen_reg_rtx (SImode);
          rtx temp2 = gen_reg_rtx (SImode);

          get_aligned_mem (operands[0], &aligned_mem, &bitnum);

          emit_insn (gen_aligned_store (aligned_mem, operands[1], bitnum,
                                        temp1, temp2));
        }
      else
        {
          rtx temp1 = gen_reg_rtx (DImode);
          rtx temp2 = gen_reg_rtx (DImode);
          rtx temp3 = gen_reg_rtx (DImode);
          rtx seq
            = gen_unaligned_storeqi (get_unaligned_address (operands[0], 0),
                                     operands[1], temp1, temp2, temp3);

          alpha_set_memflags (seq, operands[0]);
          emit_insn (seq);
        }
      DONE;
    }
 def:;
}")

(define_expand "movhi"
  [(set (match_operand:HI 0 "nonimmediate_operand" "")
        (match_operand:HI 1 "general_operand" ""))]
  ""
  "
{
  if (TARGET_BWX)
    {
      if (GET_CODE (operands[0]) == MEM
          && ! reg_or_0_operand (operands[1], HImode))
        operands[1] = force_reg (HImode, operands[1]);

      if (GET_CODE (operands[1]) == CONST_INT
               && ! input_operand (operands[1], HImode))
        {
          operands[1] = alpha_emit_set_const (operands[0], HImode,
                                              INTVAL (operands[1]), 3);

          if (rtx_equal_p (operands[0], operands[1]))
            DONE;
        }

      goto def;
    }

  /* If the output is not a register, the input must be.  */
  if (GET_CODE (operands[0]) == MEM)
    operands[1] = force_reg (HImode, operands[1]);

  /* Handle four memory cases, unaligned and aligned for either the input
     or the output.  The only case where we can be called during reload is
     for aligned loads; all other cases require temporaries.  */

  if (GET_CODE (operands[1]) == MEM
      || (GET_CODE (operands[1]) == SUBREG
          && GET_CODE (SUBREG_REG (operands[1])) == MEM)
      || (reload_in_progress && GET_CODE (operands[1]) == REG
          && REGNO (operands[1]) >= FIRST_PSEUDO_REGISTER)
      || (reload_in_progress && GET_CODE (operands[1]) == SUBREG
          && GET_CODE (SUBREG_REG (operands[1])) == REG
          && REGNO (SUBREG_REG (operands[1])) >= FIRST_PSEUDO_REGISTER))
    {
      if (aligned_memory_operand (operands[1], HImode))
        {
          if (reload_in_progress)
            {
              emit_insn (gen_reload_inhi_help
                         (operands[0], operands[1],
                          gen_rtx_REG (SImode, REGNO (operands[0]))));
            }
          else
            {
              rtx aligned_mem, bitnum;
              rtx scratch = gen_reg_rtx (SImode);

              get_aligned_mem (operands[1], &aligned_mem, &bitnum);

              emit_insn (gen_aligned_loadhi (operands[0], aligned_mem, bitnum,
                                             scratch));
            }
        }
      else
        {
          /* Don't pass these as parameters since that makes the generated
             code depend on parameter evaluation order which will cause
             bootstrap failures.  */

          rtx temp1 = gen_reg_rtx (DImode);
          rtx temp2 = gen_reg_rtx (DImode);
          rtx seq
            = gen_unaligned_loadhi (operands[0],
                                    get_unaligned_address (operands[1], 0),
                                    temp1, temp2);

          alpha_set_memflags (seq, operands[1]);
          emit_insn (seq);
        }

      DONE;
    }

  else if (GET_CODE (operands[0]) == MEM
           || (GET_CODE (operands[0]) == SUBREG 
               && GET_CODE (SUBREG_REG (operands[0])) == MEM)
           || (reload_in_progress && GET_CODE (operands[0]) == REG
               && REGNO (operands[0]) >= FIRST_PSEUDO_REGISTER)
           || (reload_in_progress && GET_CODE (operands[0]) == SUBREG
               && GET_CODE (SUBREG_REG (operands[0])) == REG
               && REGNO (operands[0]) >= FIRST_PSEUDO_REGISTER))
    {
      if (aligned_memory_operand (operands[0], HImode))
        {
          rtx aligned_mem, bitnum;
          rtx temp1 = gen_reg_rtx (SImode);
          rtx temp2 = gen_reg_rtx (SImode);

          get_aligned_mem (operands[0], &aligned_mem, &bitnum);

          emit_insn (gen_aligned_store (aligned_mem, operands[1], bitnum,
                                        temp1, temp2));
        }
      else
        {
          rtx temp1 = gen_reg_rtx (DImode);
          rtx temp2 = gen_reg_rtx (DImode);
          rtx temp3 = gen_reg_rtx (DImode);
          rtx seq
            = gen_unaligned_storehi (get_unaligned_address (operands[0], 0),
                                     operands[1], temp1, temp2, temp3);

          alpha_set_memflags (seq, operands[0]);
          emit_insn (seq);
        }

      DONE;
    }
 def:;
}")

;; Here are the versions for reload.  Note that in the unaligned cases
;; we know that the operand must not be a pseudo-register because stack
;; slots are always aligned references.

(define_expand "reload_inqi"
  [(parallel [(match_operand:QI 0 "register_operand" "=r")
              (match_operand:QI 1 "any_memory_operand" "m")
              (match_operand:TI 2 "register_operand" "=&r")])]
  "! TARGET_BWX"
  "
{
  rtx scratch, seq;

  if (GET_CODE (operands[1]) != MEM)
    abort ();

  if (aligned_memory_operand (operands[1], QImode))
    {
      seq = gen_reload_inqi_help (operands[0], operands[1],
                                  gen_rtx_REG (SImode, REGNO (operands[2])));
    }
  else
    {
      rtx addr;

      /* It is possible that one of the registers we got for operands[2]
         might coincide with that of operands[0] (which is why we made
         it TImode).  Pick the other one to use as our scratch.  */
      if (REGNO (operands[0]) == REGNO (operands[2]))
        scratch = gen_rtx_REG (DImode, REGNO (operands[2]) + 1);
      else
        scratch = gen_rtx_REG (DImode, REGNO (operands[2]));

      addr = get_unaligned_address (operands[1], 0);
      seq = gen_unaligned_loadqi (operands[0], addr, scratch,
                          gen_rtx_REG (DImode, REGNO (operands[0])));
      alpha_set_memflags (seq, operands[1]);
    }
  emit_insn (seq);
  DONE;
}")

(define_expand "reload_inhi"
  [(parallel [(match_operand:HI 0 "register_operand" "=r")
              (match_operand:HI 1 "any_memory_operand" "m")
              (match_operand:TI 2 "register_operand" "=&r")])]
  "! TARGET_BWX"
  "
{
  rtx scratch, seq;

  if (GET_CODE (operands[1]) != MEM)
    abort ();

  if (aligned_memory_operand (operands[1], HImode))
    {
      seq = gen_reload_inhi_help (operands[0], operands[1], 
                                  gen_rtx_REG (SImode, REGNO (operands[2])));
    }
  else
    {
      rtx addr;

      /* It is possible that one of the registers we got for operands[2]
         might coincide with that of operands[0] (which is why we made
         it TImode).  Pick the other one to use as our scratch.  */
      if (REGNO (operands[0]) == REGNO (operands[2]))
        scratch = gen_rtx_REG (DImode, REGNO (operands[2]) + 1);
      else
        scratch = gen_rtx_REG (DImode, REGNO (operands[2]));

      addr = get_unaligned_address (operands[1], 0);
      seq = gen_unaligned_loadhi (operands[0], addr, scratch,
                          gen_rtx_REG (DImode, REGNO (operands[0])));
      alpha_set_memflags (seq, operands[1]);
    }
  emit_insn (seq);
  DONE;
}")

(define_expand "reload_outqi"
  [(parallel [(match_operand:QI 0 "any_memory_operand" "=m")
              (match_operand:QI 1 "register_operand" "r")
              (match_operand:TI 2 "register_operand" "=&r")])]
  "! TARGET_BWX"
  "
{
  if (GET_CODE (operands[0]) != MEM)
    abort ();

  if (aligned_memory_operand (operands[0], QImode))
    {
      emit_insn (gen_reload_outqi_help
                 (operands[0], operands[1],
                  gen_rtx_REG (SImode, REGNO (operands[2])),
                  gen_rtx_REG (SImode, REGNO (operands[2]) + 1)));
    }
  else
    {
      rtx addr = get_unaligned_address (operands[0], 0);
      rtx scratch1 = gen_rtx_REG (DImode, REGNO (operands[2]));
      rtx scratch2 = gen_rtx_REG (DImode, REGNO (operands[2]) + 1);
      rtx scratch3 = scratch1;
      rtx seq;

      if (GET_CODE (addr) == REG)
        scratch1 = addr;

      seq = gen_unaligned_storeqi (addr, operands[1], scratch1,
                                   scratch2, scratch3);
      alpha_set_memflags (seq, operands[0]);
      emit_insn (seq);
    }
  DONE;
}")

(define_expand "reload_outhi"
  [(parallel [(match_operand:HI 0 "any_memory_operand" "=m")
              (match_operand:HI 1 "register_operand" "r")
              (match_operand:TI 2 "register_operand" "=&r")])]
  "! TARGET_BWX"
  "
{
  if (GET_CODE (operands[0]) != MEM)
    abort ();

  if (aligned_memory_operand (operands[0], HImode))
    {
      emit_insn (gen_reload_outhi_help
                 (operands[0], operands[1],
                  gen_rtx_REG (SImode, REGNO (operands[2])),
                  gen_rtx_REG (SImode, REGNO (operands[2]) + 1)));
    }
  else
    {
      rtx addr = get_unaligned_address (operands[0], 0);
      rtx scratch1 = gen_rtx_REG (DImode, REGNO (operands[2]));
      rtx scratch2 = gen_rtx_REG (DImode, REGNO (operands[2]) + 1);
      rtx scratch3 = scratch1;
      rtx seq;

      if (GET_CODE (addr) == REG)
        scratch1 = addr;

      seq = gen_unaligned_storehi (addr, operands[1], scratch1,
                                   scratch2, scratch3);
      alpha_set_memflags (seq, operands[0]);
      emit_insn (seq);
    }
  DONE;
}")

;; Helpers for the above.  The way reload is structured, we can't
;; always get a proper address for a stack slot during reload_foo
;; expansion, so we must delay our address manipulations until after.

(define_insn "reload_inqi_help"
  [(set (match_operand:QI 0 "register_operand" "=r")
        (match_operand:QI 1 "memory_operand" "m"))
   (clobber (match_operand:SI 2 "register_operand" "=r"))]
  "! TARGET_BWX && (reload_in_progress || reload_completed)"
  "#")

(define_insn "reload_inhi_help"
  [(set (match_operand:HI 0 "register_operand" "=r")
        (match_operand:HI 1 "memory_operand" "m"))
   (clobber (match_operand:SI 2 "register_operand" "=r"))]
  "! TARGET_BWX && (reload_in_progress || reload_completed)"
  "#")

(define_insn "reload_outqi_help"
  [(set (match_operand:QI 0 "memory_operand" "=m")
        (match_operand:QI 1 "register_operand" "r"))
   (clobber (match_operand:SI 2 "register_operand" "=r"))
   (clobber (match_operand:SI 3 "register_operand" "=r"))]
  "! TARGET_BWX && (reload_in_progress || reload_completed)"
  "#")

(define_insn "reload_outhi_help"
  [(set (match_operand:HI 0 "memory_operand" "=m")
        (match_operand:HI 1 "register_operand" "r"))
   (clobber (match_operand:SI 2 "register_operand" "=r"))
   (clobber (match_operand:SI 3 "register_operand" "=r"))]
  "! TARGET_BWX && (reload_in_progress || reload_completed)"
  "#")

(define_split
  [(set (match_operand:QI 0 "register_operand" "")
        (match_operand:QI 1 "memory_operand" ""))
   (clobber (match_operand:SI 2 "register_operand" ""))]
  "! TARGET_BWX && reload_completed"
  [(const_int 0)]
  "
{
  rtx aligned_mem, bitnum;
  get_aligned_mem (operands[1], &aligned_mem, &bitnum);
  emit_insn (gen_aligned_loadqi (operands[0], aligned_mem, bitnum,
                                 operands[2]));
  DONE;
}")
  
(define_split
  [(set (match_operand:HI 0 "register_operand" "")
        (match_operand:HI 1 "memory_operand" ""))
   (clobber (match_operand:SI 2 "register_operand" ""))]
  "! TARGET_BWX && reload_completed"
  [(const_int 0)]
  "
{
  rtx aligned_mem, bitnum;
  get_aligned_mem (operands[1], &aligned_mem, &bitnum);
  emit_insn (gen_aligned_loadhi (operands[0], aligned_mem, bitnum,
                                 operands[2]));
  DONE;
}")
  
(define_split
  [(set (match_operand:QI 0 "memory_operand" "")
        (match_operand:QI 1 "register_operand" ""))
   (clobber (match_operand:SI 2 "register_operand" ""))
   (clobber (match_operand:SI 3 "register_operand" ""))]
  "! TARGET_BWX && reload_completed"
  [(const_int 0)]
  "
{
  rtx aligned_mem, bitnum;
  get_aligned_mem (operands[0], &aligned_mem, &bitnum);
  emit_insn (gen_aligned_store (aligned_mem, operands[1], bitnum,
                                operands[2], operands[3]));
  DONE;
}")

(define_split
  [(set (match_operand:HI 0 "memory_operand" "")
        (match_operand:HI 1 "register_operand" ""))
   (clobber (match_operand:SI 2 "register_operand" ""))
   (clobber (match_operand:SI 3 "register_operand" ""))]
  "! TARGET_BWX && reload_completed"
  [(const_int 0)]
  "
{
  rtx aligned_mem, bitnum;
  get_aligned_mem (operands[0], &aligned_mem, &bitnum);
  emit_insn (gen_aligned_store (aligned_mem, operands[1], bitnum,
                                operands[2], operands[3]));
  DONE;
}")
\f
;; Bit field extract patterns which use ext[wlq][lh]

(define_expand "extv"
  [(set (match_operand:DI 0 "register_operand" "")
        (sign_extract:DI (match_operand:QI 1 "memory_operand" "")
                         (match_operand:DI 2 "immediate_operand" "")
                         (match_operand:DI 3 "immediate_operand" "")))]
  ""
  "
{
  /* We can do 16, 32 and 64 bit fields, if aligned on byte boundaries.  */
  if (INTVAL (operands[3]) % 8 != 0
      || (INTVAL (operands[2]) != 16
          && INTVAL (operands[2]) != 32
          && INTVAL (operands[2]) != 64))
    FAIL;

  /* From mips.md: extract_bit_field doesn't verify that our source
     matches the predicate, so we force it to be a MEM here.  */
  if (GET_CODE (operands[1]) != MEM)
    FAIL;

  alpha_expand_unaligned_load (operands[0], operands[1],
                               INTVAL (operands[2]) / 8,
                               INTVAL (operands[3]) / 8, 1);
  DONE;
}")

(define_expand "extzv"
  [(set (match_operand:DI 0 "register_operand" "")
        (zero_extract:DI (match_operand:DI 1 "nonimmediate_operand" "")
                         (match_operand:DI 2 "immediate_operand" "")
                         (match_operand:DI 3 "immediate_operand" "")))]
  ""
  "
{
  /* We can do 8, 16, 32 and 64 bit fields, if aligned on byte boundaries.  */
  if (INTVAL (operands[3]) % 8 != 0
      || (INTVAL (operands[2]) != 8
          && INTVAL (operands[2]) != 16
          && INTVAL (operands[2]) != 32
          && INTVAL (operands[2]) != 64))
    FAIL;

  if (GET_CODE (operands[1]) == MEM)
    {
      /* Fail 8 bit fields, falling back on a simple byte load.  */
      if (INTVAL (operands[2]) == 8)
        FAIL;

      alpha_expand_unaligned_load (operands[0], operands[1],
                                   INTVAL (operands[2]) / 8,
                                   INTVAL (operands[3]) / 8, 0);
      DONE;
    }
}")

(define_expand "insv"
  [(set (zero_extract:DI (match_operand:QI 0 "memory_operand" "")
                         (match_operand:DI 1 "immediate_operand" "")
                         (match_operand:DI 2 "immediate_operand" ""))
        (match_operand:DI 3 "register_operand" ""))]
  ""
  "
{
  /* We can do 16, 32 and 64 bit fields, if aligned on byte boundaries.  */
  if (INTVAL (operands[2]) % 8 != 0
      || (INTVAL (operands[1]) != 16
          && INTVAL (operands[1]) != 32
          && INTVAL (operands[1]) != 64))
    FAIL;

  /* From mips.md: store_bit_field doesn't verify that our source
     matches the predicate, so we force it to be a MEM here.  */
  if (GET_CODE (operands[0]) != MEM)
    FAIL;

  alpha_expand_unaligned_store (operands[0], operands[3],
                                INTVAL (operands[1]) / 8,
                                INTVAL (operands[2]) / 8);
  DONE;
}")



;; Block move/clear, see alpha.c for more details.
;; Argument 0 is the destination
;; Argument 1 is the source
;; Argument 2 is the length
;; Argument 3 is the alignment

(define_expand "movstrqi"
  [(parallel [(set (match_operand:BLK 0 "memory_operand" "")
                   (match_operand:BLK 1 "memory_operand" ""))
              (use (match_operand:DI 2 "immediate_operand" ""))
              (use (match_operand:DI 3 "immediate_operand" ""))])]
  ""
  "
{
  if (alpha_expand_block_move (operands))
    DONE;
  else
    FAIL;
}")

(define_expand "clrstrqi"
  [(parallel [(set (match_operand:BLK 0 "memory_operand" "")
                   (const_int 0))
              (use (match_operand:DI 1 "immediate_operand" ""))
              (use (match_operand:DI 2 "immediate_operand" ""))])]
  ""
  "
{
  if (alpha_expand_block_clear (operands))
    DONE;
  else
    FAIL;
}")
\f
;; Subroutine of stack space allocation.  Perform a stack probe.
(define_expand "probe_stack"
  [(set (match_dup 1) (match_operand:DI 0 "const_int_operand" ""))]
  ""
  "
{
  operands[1] = gen_rtx_MEM (DImode, plus_constant (stack_pointer_rtx,
                                                    INTVAL (operands[0])));
  MEM_VOLATILE_P (operands[1]) = 1;

  operands[0] = const0_rtx;
}")

;; This is how we allocate stack space.  If we are allocating a
;; constant amount of space and we know it is less than 4096
;; bytes, we need do nothing.
;;
;; If it is more than 4096 bytes, we need to probe the stack
;; periodically. 
(define_expand "allocate_stack"
  [(set (reg:DI 30)
        (plus:DI (reg:DI 30)
                 (match_operand:DI 1 "reg_or_cint_operand" "")))
   (set (match_operand:DI 0 "register_operand" "=r")
        (match_dup 2))]
  ""
  "
{
  if (GET_CODE (operands[1]) == CONST_INT
      && INTVAL (operands[1]) < 32768)
    {
      if (INTVAL (operands[1]) >= 4096)
        {
          /* We do this the same way as in the prologue and generate explicit
             probes.  Then we update the stack by the constant.  */

          int probed = 4096;

          emit_insn (gen_probe_stack (GEN_INT (- probed)));
          while (probed + 8192 < INTVAL (operands[1]))
            emit_insn (gen_probe_stack (GEN_INT (- (probed += 8192))));

          if (probed + 4096 < INTVAL (operands[1]))
            emit_insn (gen_probe_stack (GEN_INT (- INTVAL(operands[1]))));
        }

      operands[1] = GEN_INT (- INTVAL (operands[1]));
      operands[2] = virtual_stack_dynamic_rtx;
    }
  else
    {
      rtx out_label = 0;
      rtx loop_label = gen_label_rtx ();
      rtx want = gen_reg_rtx (Pmode);
      rtx tmp = gen_reg_rtx (Pmode);
      rtx memref;

      emit_insn (gen_subdi3 (want, stack_pointer_rtx,
                             force_reg (Pmode, operands[1])));
      emit_insn (gen_adddi3 (tmp, stack_pointer_rtx, GEN_INT (-4096)));

      if (GET_CODE (operands[1]) != CONST_INT)
        {
          out_label = gen_label_rtx ();
          emit_insn (gen_cmpdi (want, tmp));
          emit_jump_insn (gen_bgeu (out_label));
        }

      emit_label (loop_label);
      memref = gen_rtx_MEM (DImode, tmp);
      MEM_VOLATILE_P (memref) = 1;
      emit_move_insn (memref, const0_rtx);
      emit_insn (gen_adddi3 (tmp, tmp, GEN_INT(-8192)));
      emit_insn (gen_cmpdi (tmp, want));
      emit_jump_insn (gen_bgtu (loop_label));

      memref = gen_rtx_MEM (DImode, want);
      MEM_VOLATILE_P (memref) = 1;
      emit_move_insn (memref, const0_rtx);

      if (out_label)
        emit_label (out_label);

      emit_move_insn (stack_pointer_rtx, want);
      emit_move_insn (operands[0], virtual_stack_dynamic_rtx);
      DONE;
    }
}")

;; This is used by alpha_expand_prolog to do the same thing as above,
;; except we cannot at that time generate new basic blocks, so we hide
;; the loop in this one insn.

(define_insn "prologue_stack_probe_loop"
  [(unspec_volatile [(match_operand:DI 0 "register_operand" "r")
                     (match_operand:DI 1 "register_operand" "r")] 5)]
  ""
  "*
{
  operands[2] = gen_label_rtx ();
  ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, \"L\",
                             CODE_LABEL_NUMBER (operands[2]));

  return \"stq $31,-8192(%1)\;subq %0,1,%0\;lda %1,-8192(%1)\;bne %0,%l2\";
}"
  [(set_attr "length" "16")
   (set_attr "type" "multi")])

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

;; These take care of emitting the ldgp insn in the prologue. This will be
;; an lda/ldah pair and we want to align them properly.  So we have two
;; unspec_volatile insns, the first of which emits the ldgp assembler macro
;; and the second of which emits nothing.  However, both are marked as type
;; IADD (the default) so the alignment code in alpha.c does the right thing
;; with them.

(define_expand "prologue_ldgp"
  [(unspec_volatile [(const_int 0)] 9)
   (unspec_volatile [(const_int 0)] 10)]
  ""
  "")

(define_insn "*prologue_ldgp_1"
  [(unspec_volatile [(const_int 0)] 9)]
  "! TARGET_OPEN_VMS && ! TARGET_WINDOWS_NT"
  "ldgp $29,0($27)\\n$%~..ng:")

(define_insn "*prologue_ldgp_2"
  [(unspec_volatile [(const_int 0)] 10)]
  "! TARGET_OPEN_VMS && ! TARGET_WINDOWS_NT"
  "")

;; The _mcount profiling hook has special calling conventions, and
;; does not clobber all the registers that a normal call would.  So
;; hide the fact this is a call at all.

(define_insn "prologue_mcount"
  [(unspec_volatile [(const_int 0)] 8)]
  ""
  "lda $28,_mcount\;jsr $28,($28),_mcount"
  [(set_attr "type" "multi")
   (set_attr "length" "8")])

(define_insn "init_fp"
  [(set (match_operand:DI 0 "register_operand" "=r")
        (match_operand:DI 1 "register_operand" "r"))
   (clobber (mem:BLK (match_operand:DI 2 "register_operand" "=r")))]
  ""
  "mov %1,%0")

(define_expand "epilogue"
  [(return)]
  ""
  "
{
  alpha_expand_epilogue ();
}")

(define_expand "sibcall_epilogue"
  [(return)]
  "!TARGET_OPEN_VMS && !TARGET_WINDOWS_NT"
  "
{
  alpha_expand_epilogue ();
  DONE;
}")

(define_expand "eh_epilogue"
  [(use (match_operand:DI 0 "register_operand" "r"))
   (use (match_operand:DI 1 "register_operand" "r"))
   (use (match_operand:DI 2 "register_operand" "r"))]
  "! TARGET_OPEN_VMS"
  "
{
  cfun->machine->eh_epilogue_sp_ofs = operands[1];
  if (GET_CODE (operands[2]) != REG || REGNO (operands[2]) != 26)
    {
      rtx ra = gen_rtx_REG (Pmode, 26);
      emit_move_insn (ra, operands[2]);
      operands[2] = ra;
    }
}")

;; In creating a large stack frame, NT _must_ use ldah+lda to load
;; the frame size into a register.  We use this pattern to ensure
;; we get lda instead of addq.
(define_insn "nt_lda"
  [(set (match_operand:DI 0 "register_operand" "=r")
        (unspec:DI [(match_dup 0)
                    (match_operand:DI 1 "const_int_operand" "n")] 6))]
  ""
  "lda %0,%1(%0)")

(define_expand "builtin_longjmp"
  [(unspec_volatile [(match_operand:DI 0 "register_operand" "r")] 3)]
  "! TARGET_OPEN_VMS && ! TARGET_WINDOWS_NT"
  "
{
  /* The elements of the buffer are, in order:  */
  rtx fp = gen_rtx_MEM (Pmode, operands[0]);
  rtx lab = gen_rtx_MEM (Pmode, plus_constant (operands[0], 8));
  rtx stack = gen_rtx_MEM (Pmode, plus_constant (operands[0], 16));
  rtx pv = gen_rtx_REG (Pmode, 27);

  /* This bit is the same as expand_builtin_longjmp.  */
  emit_move_insn (hard_frame_pointer_rtx, fp);
  emit_move_insn (pv, lab);
  emit_stack_restore (SAVE_NONLOCAL, stack, NULL_RTX);
  emit_insn (gen_rtx_USE (VOIDmode, hard_frame_pointer_rtx));
  emit_insn (gen_rtx_USE (VOIDmode, stack_pointer_rtx));

  /* Load the label we are jumping through into $27 so that we know
     where to look for it when we get back to setjmp's function for
     restoring the gp.  */
  emit_indirect_jump (pv);
  DONE;
}")

(define_insn "builtin_setjmp_receiver"
  [(unspec_volatile [(label_ref (match_operand 0 "" ""))] 2)]
  "! TARGET_OPEN_VMS && ! TARGET_WINDOWS_NT && TARGET_AS_CAN_SUBTRACT_LABELS"
  "\\n$LSJ%=:\;ldgp $29,$LSJ%=-%l0($27)"
  [(set_attr "length" "8")
   (set_attr "type" "multi")])

(define_insn ""
  [(unspec_volatile [(label_ref (match_operand 0 "" ""))] 2)]
  "! TARGET_OPEN_VMS && ! TARGET_WINDOWS_NT"
  "br $29,$LSJ%=\\n$LSJ%=:\;ldgp $29,0($29)"
  [(set_attr "length" "12")
   (set_attr "type" "multi")])

(define_insn "exception_receiver"
  [(unspec_volatile [(const_int 0)] 7)]
  "! TARGET_OPEN_VMS && ! TARGET_WINDOWS_NT"
  "br $29,$LSJ%=\\n$LSJ%=:\;ldgp $29,0($29)"
  [(set_attr "length" "12")
   (set_attr "type" "multi")])

(define_expand "nonlocal_goto_receiver"
  [(unspec_volatile [(const_int 0)] 1)
   (set (reg:DI 27) (mem:DI (reg:DI 29)))
   (unspec_volatile [(const_int 0)] 1)
   (use (reg:DI 27))]
  "TARGET_OPEN_VMS"
  "")

(define_insn "arg_home"
  [(unspec [(const_int 0)] 0)
   (use (reg:DI 1))
   (use (reg:DI 25))
   (use (reg:DI 16))
   (use (reg:DI 17))
   (use (reg:DI 18))
   (use (reg:DI 19))
   (use (reg:DI 20))
   (use (reg:DI 21))
   (use (reg:DI 48))
   (use (reg:DI 49))
   (use (reg:DI 50))
   (use (reg:DI 51))
   (use (reg:DI 52))
   (use (reg:DI 53))
   (clobber (mem:BLK (const_int 0)))
   (clobber (reg:DI 24))
   (clobber (reg:DI 25))
   (clobber (reg:DI 0))]
  "TARGET_OPEN_VMS"
  "lda $0,OTS$HOME_ARGS\;ldq $0,8($0)\;jsr $0,OTS$HOME_ARGS"
  [(set_attr "length" "16")
   (set_attr "type" "multi")])

;; Close the trap shadow of preceeding instructions.  This is generated
;; by alpha_reorg.

(define_insn "trapb"
  [(unspec_volatile [(const_int 0)] 4)]
  ""
  "trapb"
  [(set_attr "type" "misc")])

;; No-op instructions used by machine-dependant reorg to preserve
;; alignment for instruction issue.

(define_insn "nop"
  [(const_int 0)]
  ""
  "nop"
  [(set_attr "type" "ilog")])

(define_insn "fnop"
  [(const_int 1)]
  "TARGET_FP"
  "fnop"
  [(set_attr "type" "fcpys")])

(define_insn "unop"
  [(const_int 2)]
  ""
  "unop")

(define_insn "realign"
  [(unspec_volatile [(match_operand 0 "immediate_operand" "i")] 6)]
  ""
  ".align %0 #realign")

;; The call patterns are at the end of the file because their
;; wildcard operand0 interferes with nice recognition.

(define_insn "*call_value_osf_1"
  [(set (match_operand 0 "" "")
        (call (mem:DI (match_operand:DI 1 "call_operand" "r,R,i"))
              (match_operand 2 "" "")))
   (clobber (reg:DI 27))
   (clobber (reg:DI 26))]
  "! TARGET_WINDOWS_NT && ! TARGET_OPEN_VMS"
  "@
   jsr $26,($27),0\;ldgp $29,0($26)
   bsr $26,$%1..ng
   jsr $26,%1\;ldgp $29,0($26)"
  [(set_attr "type" "jsr")
   (set_attr "length" "12,*,16")])

(define_insn "*sibcall_value_osf_1"
  [(set (match_operand 0 "" "")
        (call (mem:DI (match_operand:DI 1 "call_operand" "R,i"))
              (match_operand 2 "" "")))]
  "! TARGET_WINDOWS_NT && ! TARGET_OPEN_VMS"
  "@
   br $31,$%1..ng
   jmp $31,%1"
  [(set_attr "type" "jsr")
   (set_attr "length" "*,8")])

(define_insn "*call_value_nt_1"
  [(set (match_operand 0 "" "")
        (call (mem:DI (match_operand:DI 1 "call_operand" "r,R,i"))
              (match_operand 2 "" "")))
   (clobber (reg:DI 26))]
  "TARGET_WINDOWS_NT"
  "@
   jsr $26,(%1)
   bsr $26,%1
   jsr $26,%1"
  [(set_attr "type" "jsr")
   (set_attr "length" "*,*,12")])

(define_insn "*call_value_vms_1"
  [(set (match_operand 0 "" "")
        (call (mem:DI (match_operand:DI 1 "call_operand" "r,i"))
              (match_operand 2 "" "")))
   (use (match_operand:DI 3 "nonimmediate_operand" "r,m"))
   (use (reg:DI 25))
   (use (reg:DI 26))
   (clobber (reg:DI 27))]
  "TARGET_OPEN_VMS"
  "@
   mov %3,$27\;jsr $26,0\;ldq $27,0($29)
   ldq $27,%3\;jsr $26,%1\;ldq $27,0($29)"
  [(set_attr "type" "jsr")
   (set_attr "length" "12,16")])
\f
;; Peepholes go at the end.

;; Optimize sign-extension of SImode loads.  This shows up in the wake of
;; reload when converting fp->int.

(define_peephole2
  [(set (match_operand:SI 0 "hard_int_register_operand" "")
        (match_operand:SI 1 "memory_operand" ""))
   (set (match_operand:DI 2 "hard_int_register_operand" "")
        (sign_extend:DI (match_dup 0)))]
  "true_regnum (operands[0]) == true_regnum (operands[2])
   || peep2_reg_dead_p (2, operands[0])"
  [(set (match_dup 2)
        (sign_extend:DI (match_dup 1)))]
  "")

(define_peephole2
  [(set (match_operand:SI 0 "hard_int_register_operand" "")
        (match_operand:SI 1 "hard_fp_register_operand" ""))
   (set (match_operand:DI 2 "hard_int_register_operand" "")
        (sign_extend:DI (match_dup 0)))]
  "TARGET_FIX
   && (true_regnum (operands[0]) == true_regnum (operands[2])
       || peep2_reg_dead_p (2, operands[0]))"
  [(set (match_dup 2)
        (sign_extend:DI (match_dup 1)))]
  "")

(define_peephole2
  [(set (match_operand:DI 0 "hard_fp_register_operand" "")
        (sign_extend:DI (match_operand:SI 1 "hard_fp_register_operand" "")))
   (set (match_operand:DI 2 "hard_int_register_operand" "")
        (match_dup 0))]
  "TARGET_FIX && peep2_reg_dead_p (2, operands[0])"
  [(set (match_dup 2)
        (sign_extend:DI (match_dup 1)))]
  "")