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;; GCC machine description for IA-64 synchronization instructions.
;; Copyright (C) 2005, 2007, 2008, 2009, 2010
;; Free Software Foundation, Inc.
;;
;; This file is part of GCC.
;;
;; GCC is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation; either version 3, or (at your option)
;; any later version.
;;
;; GCC is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;; GNU General Public License for more details.
;;
;; You should have received a copy of the GNU General Public License
;; along with GCC; see the file COPYING3.  If not see
;; .
 
;; Conversion to C++11 memory model based on
;; http://www.cl.cam.ac.uk/~pes20/cpp/cpp0xmappings.html
 
(define_mode_iterator IMODE [QI HI SI DI])
(define_mode_iterator I124MODE [QI HI SI])
(define_mode_iterator I48MODE [SI DI])
(define_mode_attr modesuffix [(QI "1") (HI "2") (SI "4") (DI "8")])
 
(define_code_iterator FETCHOP [plus minus ior xor and])
(define_code_attr fetchop_name
  [(plus "add") (minus "sub") (ior "ior") (xor "xor") (and "and")])
 
(define_expand "mem_thread_fence"
  [(match_operand:SI 0 "const_int_operand" "")]         ;; model
  ""
{
  if (INTVAL (operands[0]) == MEMMODEL_SEQ_CST)
    emit_insn (gen_memory_barrier ());
  DONE;
})
 
(define_expand "memory_barrier"
  [(set (match_dup 0)
        (unspec:BLK [(match_dup 0)] UNSPEC_MF))]
  ""
{
  operands[0] = gen_rtx_MEM (BLKmode, gen_rtx_SCRATCH (Pmode));
  MEM_VOLATILE_P (operands[0]) = 1;
})
 
(define_insn "*memory_barrier"
  [(set (match_operand:BLK 0 "" "")
        (unspec:BLK [(match_dup 0)] UNSPEC_MF))]
  ""
  "mf"
  [(set_attr "itanium_class" "syst_m")])
 
(define_expand "atomic_load"
  [(match_operand:IMODE 0 "gr_register_operand" "")             ;; output
   (match_operand:IMODE 1 "memory_operand" "")                  ;; memory
   (match_operand:SI 2 "const_int_operand" "")]                 ;; model
  ""
{
  enum memmodel model = (enum memmodel) INTVAL (operands[2]);
 
  /* Unless the memory model is relaxed, we want to emit ld.acq, which
     will happen automatically for volatile memories.  */
  gcc_assert (model == MEMMODEL_RELAXED || MEM_VOLATILE_P (operands[1]));
  emit_move_insn (operands[0], operands[1]);
  DONE;
})
 
(define_expand "atomic_store"
  [(match_operand:IMODE 0 "memory_operand" "")                  ;; memory
   (match_operand:IMODE 1 "gr_reg_or_0_operand" "")             ;; input
   (match_operand:SI 2 "const_int_operand" "")]                 ;; model
  ""
{
  enum memmodel model = (enum memmodel) INTVAL (operands[2]);
 
  /* Unless the memory model is relaxed, we want to emit st.rel, which
     will happen automatically for volatile memories.  */
  gcc_assert (model == MEMMODEL_RELAXED || MEM_VOLATILE_P (operands[0]));
  emit_move_insn (operands[0], operands[1]);
 
  /* Sequentially consistent stores need a subsequent MF.  See
     http://www.decadent.org.uk/pipermail/cpp-threads/2008-December/001952.html
     for a discussion of why a MF is needed here, but not for atomic_load.  */
  if (model == MEMMODEL_SEQ_CST)
    emit_insn (gen_memory_barrier ());
  DONE;
})
 
(define_expand "atomic_compare_and_swap"
  [(match_operand:DI 0 "gr_register_operand" "")                ;; bool out
   (match_operand:IMODE 1 "gr_register_operand" "")             ;; val out
   (match_operand:IMODE 2 "not_postinc_memory_operand" "")      ;; memory
   (match_operand:IMODE 3 "gr_register_operand" "")             ;; expected
   (match_operand:IMODE 4 "gr_reg_or_0_operand" "")             ;; desired
   (match_operand:SI 5 "const_int_operand" "")                  ;; is_weak
   (match_operand:SI 6 "const_int_operand" "")                  ;; succ model
   (match_operand:SI 7 "const_int_operand" "")]                 ;; fail model
  ""
{
  enum memmodel model = (enum memmodel) INTVAL (operands[6]);
  rtx ccv = gen_rtx_REG (DImode, AR_CCV_REGNUM);
  rtx dval, eval;
 
  eval = gen_reg_rtx (DImode);
  convert_move (eval, operands[3], 1);
  emit_move_insn (ccv, eval);
 
  if (mode == DImode)
    dval = operands[1];
  else
    dval = gen_reg_rtx (DImode);
 
  switch (model)
    {
    case MEMMODEL_RELAXED:
    case MEMMODEL_ACQUIRE:
    case MEMMODEL_CONSUME:
      emit_insn (gen_cmpxchg_acq_ (dval, operands[2], ccv, operands[4]));
      break;
    case MEMMODEL_RELEASE:
      emit_insn (gen_cmpxchg_rel_ (dval, operands[2], ccv, operands[4]));
      break;
    case MEMMODEL_ACQ_REL:
    case MEMMODEL_SEQ_CST:
      emit_insn (gen_cmpxchg_rel_ (dval, operands[2], ccv, operands[4]));
      emit_insn (gen_memory_barrier ());
      break;
    default:
      gcc_unreachable ();
    }
 
  if (mode != DImode)
    emit_move_insn (operands[1], gen_lowpart (mode, dval));
 
  emit_insn (gen_cstoredi4 (operands[0], gen_rtx_EQ (DImode, dval, eval),
                            dval, eval));
  DONE;
})
 
(define_insn "cmpxchg_acq_"
  [(set (match_operand:DI 0 "gr_register_operand" "=r")
        (zero_extend:DI
          (match_operand:I124MODE 1 "not_postinc_memory_operand" "+S")))
   (set (match_dup 1)
        (unspec:I124MODE
          [(match_dup 1)
           (match_operand:DI 2 "ar_ccv_reg_operand" "")
           (match_operand:I124MODE 3 "gr_reg_or_0_operand" "rO")]
          UNSPEC_CMPXCHG_ACQ))]
  ""
  "cmpxchg.acq %0 = %1, %r3, %2"
  [(set_attr "itanium_class" "sem")])
 
(define_insn "cmpxchg_rel_"
  [(set (match_operand:DI 0 "gr_register_operand" "=r")
        (zero_extend:DI
          (match_operand:I124MODE 1 "not_postinc_memory_operand" "+S")))
   (set (match_dup 1)
        (unspec:I124MODE
          [(match_dup 1)
           (match_operand:DI 2 "ar_ccv_reg_operand" "")
           (match_operand:I124MODE 3 "gr_reg_or_0_operand" "rO")]
          UNSPEC_CMPXCHG_REL))]
  ""
  "cmpxchg.rel %0 = %1, %r3, %2"
  [(set_attr "itanium_class" "sem")])
 
(define_insn "cmpxchg_acq_di"
  [(set (match_operand:DI 0 "gr_register_operand" "=r")
        (match_operand:DI 1 "not_postinc_memory_operand" "+S"))
   (set (match_dup 1)
        (unspec:DI [(match_dup 1)
                    (match_operand:DI 2 "ar_ccv_reg_operand" "")
                    (match_operand:DI 3 "gr_reg_or_0_operand" "rO")]
                   UNSPEC_CMPXCHG_ACQ))]
  ""
  "cmpxchg8.acq %0 = %1, %r3, %2"
  [(set_attr "itanium_class" "sem")])
 
(define_insn "cmpxchg_rel_di"
  [(set (match_operand:DI 0 "gr_register_operand" "=r")
        (match_operand:DI 1 "not_postinc_memory_operand" "+S"))
   (set (match_dup 1)
        (unspec:DI [(match_dup 1)
                    (match_operand:DI 2 "ar_ccv_reg_operand" "")
                    (match_operand:DI 3 "gr_reg_or_0_operand" "rO")]
                   UNSPEC_CMPXCHG_REL))]
  ""
  "cmpxchg8.rel %0 = %1, %r3, %2"
  [(set_attr "itanium_class" "sem")])
 
(define_expand "atomic_exchange"
  [(match_operand:IMODE 0 "gr_register_operand" "")             ;; output
   (match_operand:IMODE 1 "not_postinc_memory_operand" "")      ;; memory
   (match_operand:IMODE 2 "gr_reg_or_0_operand" "")             ;; input
   (match_operand:SI 3 "const_int_operand" "")]                 ;; succ model
  ""
{
  enum memmodel model = (enum memmodel) INTVAL (operands[3]);
 
  switch (model)
    {
    case MEMMODEL_RELAXED:
    case MEMMODEL_ACQUIRE:
    case MEMMODEL_CONSUME:
      break;
    case MEMMODEL_RELEASE:
    case MEMMODEL_ACQ_REL:
    case MEMMODEL_SEQ_CST:
      emit_insn (gen_memory_barrier ());
      break;
    default:
      gcc_unreachable ();
    }
  emit_insn (gen_xchg_acq_ (operands[0], operands[1], operands[2]));
  DONE;
})
 
;; Note that XCHG is always memory model acquire.
(define_insn "xchg_acq_"
  [(set (match_operand:IMODE 0 "gr_register_operand" "=r")
        (match_operand:IMODE 1 "not_postinc_memory_operand" "+S"))
   (set (match_dup 1)
        (match_operand:IMODE 2 "gr_reg_or_0_operand" "rO"))]
  ""
  "xchg %0 = %1, %r2"
  [(set_attr "itanium_class" "sem")])
 
(define_expand "atomic_"
  [(set (match_operand:IMODE 0 "memory_operand" "")
        (FETCHOP:IMODE (match_dup 0)
          (match_operand:IMODE 1 "nonmemory_operand" "")))
   (use (match_operand:SI 2 "const_int_operand" ""))]
  ""
{
  ia64_expand_atomic_op (, operands[0], operands[1], NULL, NULL,
                         (enum memmodel) INTVAL (operands[2]));
  DONE;
})
 
(define_expand "atomic_nand"
  [(set (match_operand:IMODE 0 "memory_operand" "")
        (not:IMODE
          (and:IMODE (match_dup 0)
                     (match_operand:IMODE 1 "nonmemory_operand" ""))))
   (use (match_operand:SI 2 "const_int_operand" ""))]
  ""
{
  ia64_expand_atomic_op (NOT, operands[0], operands[1], NULL, NULL,
                         (enum memmodel) INTVAL (operands[2]));
  DONE;
})
 
(define_expand "atomic_fetch_"
  [(set (match_operand:IMODE 0 "gr_register_operand" "")
        (FETCHOP:IMODE
          (match_operand:IMODE 1 "memory_operand" "")
          (match_operand:IMODE 2 "nonmemory_operand" "")))
   (use (match_operand:SI 3 "const_int_operand" ""))]
  ""
{
  ia64_expand_atomic_op (, operands[1], operands[2], operands[0], NULL,
                         (enum memmodel) INTVAL (operands[3]));
  DONE;
})
 
(define_expand "atomic_fetch_nand"
  [(set (match_operand:IMODE 0 "gr_register_operand" "")
        (not:IMODE
          (and:IMODE (match_operand:IMODE 1 "memory_operand" "")
                     (match_operand:IMODE 2 "nonmemory_operand" ""))))
   (use (match_operand:SI 3 "const_int_operand" ""))]
  ""
{
  ia64_expand_atomic_op (NOT, operands[1], operands[2], operands[0], NULL,
                         (enum memmodel) INTVAL (operands[3]));
  DONE;
})
 
(define_expand "atomic__fetch"
  [(set (match_operand:IMODE 0 "gr_register_operand" "")
        (FETCHOP:IMODE
          (match_operand:IMODE 1 "memory_operand" "")
          (match_operand:IMODE 2 "nonmemory_operand" "")))
   (use (match_operand:SI 3 "const_int_operand" ""))]
  ""
{
  ia64_expand_atomic_op (, operands[1], operands[2], NULL, operands[0],
                         (enum memmodel) INTVAL (operands[3]));
  DONE;
})
 
(define_expand "atomic_nand_fetch"
  [(set (match_operand:IMODE 0 "gr_register_operand" "")
        (not:IMODE
          (and:IMODE (match_operand:IMODE 1 "memory_operand" "")
                     (match_operand:IMODE 2 "nonmemory_operand" ""))))
   (use (match_operand:SI 3 "const_int_operand" ""))]
  ""
{
  ia64_expand_atomic_op (NOT, operands[1], operands[2], NULL, operands[0],
                         (enum memmodel) INTVAL (operands[3]));
  DONE;
})
 
(define_insn "fetchadd_acq_"
  [(set (match_operand:I48MODE 0 "gr_register_operand" "=r")
        (match_operand:I48MODE 1 "not_postinc_memory_operand" "+S"))
   (set (match_dup 1)
        (unspec:I48MODE [(match_dup 1)
                         (match_operand:I48MODE 2 "fetchadd_operand" "n")]
                        UNSPEC_FETCHADD_ACQ))]
  ""
  "fetchadd.acq %0 = %1, %2"
  [(set_attr "itanium_class" "sem")])
 
(define_insn "fetchadd_rel_"
  [(set (match_operand:I48MODE 0 "gr_register_operand" "=r")
        (match_operand:I48MODE 1 "not_postinc_memory_operand" "+S"))
   (set (match_dup 1)
        (unspec:I48MODE [(match_dup 1)
                         (match_operand:I48MODE 2 "fetchadd_operand" "n")]
                        UNSPEC_FETCHADD_REL))]
  ""
  "fetchadd.rel %0 = %1, %2"
  [(set_attr "itanium_class" "sem")])

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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [gcc/] [config/] [ia64/] [sync.md] - Blame information for rev 709

Line No.	Rev	Author	Line
1	709	jeremybenn	`;; GCC machine description for IA-64 synchronization instructions.`
2			`;; Copyright (C) 2005, 2007, 2008, 2009, 2010`
3			`;; Free Software Foundation, Inc.`
4			`;;`
5			`;; This file is part of GCC.`
6			`;;`
7			`;; GCC is free software; you can redistribute it and/or modify`
8			`;; it under the terms of the GNU General Public License as published by`
9			`;; the Free Software Foundation; either version 3, or (at your option)`
10			`;; any later version.`
11			`;;`
12			`;; GCC is distributed in the hope that it will be useful,`
13			`;; but WITHOUT ANY WARRANTY; without even the implied warranty of`
14			`;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the`
15			`;; GNU General Public License for more details.`
16			`;;`
17			`;; You should have received a copy of the GNU General Public License`
18			`;; along with GCC; see the file COPYING3. If not see`
19			`;; .`
20
21			`;; Conversion to C++11 memory model based on`
22			`;; http://www.cl.cam.ac.uk/~pes20/cpp/cpp0xmappings.html`
23
24			`(define_mode_iterator IMODE [QI HI SI DI])`
25			`(define_mode_iterator I124MODE [QI HI SI])`
26			`(define_mode_iterator I48MODE [SI DI])`
27			`(define_mode_attr modesuffix [(QI "1") (HI "2") (SI "4") (DI "8")])`
28
29			`(define_code_iterator FETCHOP [plus minus ior xor and])`
30			`(define_code_attr fetchop_name`
31			`[(plus "add") (minus "sub") (ior "ior") (xor "xor") (and "and")])`
32
33			`(define_expand "mem_thread_fence"`
34			`[(match_operand:SI 0 "const_int_operand" "")] ;; model`
35			`""`
36			`{`
37			`if (INTVAL (operands[0]) == MEMMODEL_SEQ_CST)`
38			`emit_insn (gen_memory_barrier ());`
39			`DONE;`
40			`})`
41
42			`(define_expand "memory_barrier"`
43			`[(set (match_dup 0)`
44			`(unspec:BLK [(match_dup 0)] UNSPEC_MF))]`
45			`""`
46			`{`
47			`operands[0] = gen_rtx_MEM (BLKmode, gen_rtx_SCRATCH (Pmode));`
48			`MEM_VOLATILE_P (operands[0]) = 1;`
49			`})`
50
51			`(define_insn "*memory_barrier"`
52			`[(set (match_operand:BLK 0 "" "")`
53			`(unspec:BLK [(match_dup 0)] UNSPEC_MF))]`
54			`""`
55			`"mf"`
56			`[(set_attr "itanium_class" "syst_m")])`
57
58			`(define_expand "atomic_load"`
59			`[(match_operand:IMODE 0 "gr_register_operand" "") ;; output`
60			`(match_operand:IMODE 1 "memory_operand" "") ;; memory`
61			`(match_operand:SI 2 "const_int_operand" "")] ;; model`
62			`""`
63			`{`
64			`enum memmodel model = (enum memmodel) INTVAL (operands[2]);`
65
66			`/* Unless the memory model is relaxed, we want to emit ld.acq, which`
67			`will happen automatically for volatile memories. */`
68			`gcc_assert (model == MEMMODEL_RELAXED \|\| MEM_VOLATILE_P (operands[1]));`
69			`emit_move_insn (operands[0], operands[1]);`
70			`DONE;`
71			`})`
72
73			`(define_expand "atomic_store"`
74			`[(match_operand:IMODE 0 "memory_operand" "") ;; memory`
75			`(match_operand:IMODE 1 "gr_reg_or_0_operand" "") ;; input`
76			`(match_operand:SI 2 "const_int_operand" "")] ;; model`
77			`""`
78			`{`
79			`enum memmodel model = (enum memmodel) INTVAL (operands[2]);`
80
81			`/* Unless the memory model is relaxed, we want to emit st.rel, which`
82			`will happen automatically for volatile memories. */`
83			`gcc_assert (model == MEMMODEL_RELAXED \|\| MEM_VOLATILE_P (operands[0]));`
84			`emit_move_insn (operands[0], operands[1]);`
85
86			`/* Sequentially consistent stores need a subsequent MF. See`
87			`http://www.decadent.org.uk/pipermail/cpp-threads/2008-December/001952.html`
88			`for a discussion of why a MF is needed here, but not for atomic_load. */`
89			`if (model == MEMMODEL_SEQ_CST)`
90			`emit_insn (gen_memory_barrier ());`
91			`DONE;`
92			`})`
93
94			`(define_expand "atomic_compare_and_swap"`
95			`[(match_operand:DI 0 "gr_register_operand" "") ;; bool out`
96			`(match_operand:IMODE 1 "gr_register_operand" "") ;; val out`
97			`(match_operand:IMODE 2 "not_postinc_memory_operand" "") ;; memory`
98			`(match_operand:IMODE 3 "gr_register_operand" "") ;; expected`
99			`(match_operand:IMODE 4 "gr_reg_or_0_operand" "") ;; desired`
100			`(match_operand:SI 5 "const_int_operand" "") ;; is_weak`
101			`(match_operand:SI 6 "const_int_operand" "") ;; succ model`
102			`(match_operand:SI 7 "const_int_operand" "")] ;; fail model`
103			`""`
104			`{`
105			`enum memmodel model = (enum memmodel) INTVAL (operands[6]);`
106			`rtx ccv = gen_rtx_REG (DImode, AR_CCV_REGNUM);`
107			`rtx dval, eval;`
108
109			`eval = gen_reg_rtx (DImode);`
110			`convert_move (eval, operands[3], 1);`
111			`emit_move_insn (ccv, eval);`
112
113			`if (mode == DImode)`
114			`dval = operands[1];`
115			`else`
116			`dval = gen_reg_rtx (DImode);`
117
118			`switch (model)`
119			`{`
120			`case MEMMODEL_RELAXED:`
121			`case MEMMODEL_ACQUIRE:`
122			`case MEMMODEL_CONSUME:`
123			`emit_insn (gen_cmpxchg_acq_ (dval, operands[2], ccv, operands[4]));`
124			`break;`
125			`case MEMMODEL_RELEASE:`
126			`emit_insn (gen_cmpxchg_rel_ (dval, operands[2], ccv, operands[4]));`
127			`break;`
128			`case MEMMODEL_ACQ_REL:`
129			`case MEMMODEL_SEQ_CST:`
130			`emit_insn (gen_cmpxchg_rel_ (dval, operands[2], ccv, operands[4]));`
131			`emit_insn (gen_memory_barrier ());`
132			`break;`
133			`default:`
134			`gcc_unreachable ();`
135			`}`
136
137			`if (mode != DImode)`
138			`emit_move_insn (operands[1], gen_lowpart (mode, dval));`
139
140			`emit_insn (gen_cstoredi4 (operands[0], gen_rtx_EQ (DImode, dval, eval),`
141			`dval, eval));`
142			`DONE;`
143			`})`
144
145			`(define_insn "cmpxchg_acq_"`
146			`[(set (match_operand:DI 0 "gr_register_operand" "=r")`
147			`(zero_extend:DI`
148			`(match_operand:I124MODE 1 "not_postinc_memory_operand" "+S")))`
149			`(set (match_dup 1)`
150			`(unspec:I124MODE`
151			`[(match_dup 1)`
152			`(match_operand:DI 2 "ar_ccv_reg_operand" "")`
153			`(match_operand:I124MODE 3 "gr_reg_or_0_operand" "rO")]`
154			`UNSPEC_CMPXCHG_ACQ))]`
155			`""`
156			`"cmpxchg.acq %0 = %1, %r3, %2"`
157			`[(set_attr "itanium_class" "sem")])`
158
159			`(define_insn "cmpxchg_rel_"`
160			`[(set (match_operand:DI 0 "gr_register_operand" "=r")`
161			`(zero_extend:DI`
162			`(match_operand:I124MODE 1 "not_postinc_memory_operand" "+S")))`
163			`(set (match_dup 1)`
164			`(unspec:I124MODE`
165			`[(match_dup 1)`
166			`(match_operand:DI 2 "ar_ccv_reg_operand" "")`
167			`(match_operand:I124MODE 3 "gr_reg_or_0_operand" "rO")]`
168			`UNSPEC_CMPXCHG_REL))]`
169			`""`
170			`"cmpxchg.rel %0 = %1, %r3, %2"`
171			`[(set_attr "itanium_class" "sem")])`
172
173			`(define_insn "cmpxchg_acq_di"`
174			`[(set (match_operand:DI 0 "gr_register_operand" "=r")`
175			`(match_operand:DI 1 "not_postinc_memory_operand" "+S"))`
176			`(set (match_dup 1)`
177			`(unspec:DI [(match_dup 1)`
178			`(match_operand:DI 2 "ar_ccv_reg_operand" "")`
179			`(match_operand:DI 3 "gr_reg_or_0_operand" "rO")]`
180			`UNSPEC_CMPXCHG_ACQ))]`
181			`""`
182			`"cmpxchg8.acq %0 = %1, %r3, %2"`
183			`[(set_attr "itanium_class" "sem")])`
184
185			`(define_insn "cmpxchg_rel_di"`
186			`[(set (match_operand:DI 0 "gr_register_operand" "=r")`
187			`(match_operand:DI 1 "not_postinc_memory_operand" "+S"))`
188			`(set (match_dup 1)`
189			`(unspec:DI [(match_dup 1)`
190			`(match_operand:DI 2 "ar_ccv_reg_operand" "")`
191			`(match_operand:DI 3 "gr_reg_or_0_operand" "rO")]`
192			`UNSPEC_CMPXCHG_REL))]`
193			`""`
194			`"cmpxchg8.rel %0 = %1, %r3, %2"`
195			`[(set_attr "itanium_class" "sem")])`
196
197			`(define_expand "atomic_exchange"`
198			`[(match_operand:IMODE 0 "gr_register_operand" "") ;; output`
199			`(match_operand:IMODE 1 "not_postinc_memory_operand" "") ;; memory`
200			`(match_operand:IMODE 2 "gr_reg_or_0_operand" "") ;; input`
201			`(match_operand:SI 3 "const_int_operand" "")] ;; succ model`
202			`""`
203			`{`
204			`enum memmodel model = (enum memmodel) INTVAL (operands[3]);`
205
206			`switch (model)`
207			`{`
208			`case MEMMODEL_RELAXED:`
209			`case MEMMODEL_ACQUIRE:`
210			`case MEMMODEL_CONSUME:`
211			`break;`
212			`case MEMMODEL_RELEASE:`
213			`case MEMMODEL_ACQ_REL:`
214			`case MEMMODEL_SEQ_CST:`
215			`emit_insn (gen_memory_barrier ());`
216			`break;`
217			`default:`
218			`gcc_unreachable ();`
219			`}`
220			`emit_insn (gen_xchg_acq_ (operands[0], operands[1], operands[2]));`
221			`DONE;`
222			`})`
223
224			`;; Note that XCHG is always memory model acquire.`
225			`(define_insn "xchg_acq_"`
226			`[(set (match_operand:IMODE 0 "gr_register_operand" "=r")`
227			`(match_operand:IMODE 1 "not_postinc_memory_operand" "+S"))`
228			`(set (match_dup 1)`
229			`(match_operand:IMODE 2 "gr_reg_or_0_operand" "rO"))]`
230			`""`
231			`"xchg %0 = %1, %r2"`
232			`[(set_attr "itanium_class" "sem")])`
233
234			`(define_expand "atomic_"`
235			`[(set (match_operand:IMODE 0 "memory_operand" "")`
236			`(FETCHOP:IMODE (match_dup 0)`
237			`(match_operand:IMODE 1 "nonmemory_operand" "")))`
238			`(use (match_operand:SI 2 "const_int_operand" ""))]`
239			`""`
240			`{`
241			`ia64_expand_atomic_op (, operands[0], operands[1], NULL, NULL,`
242			`(enum memmodel) INTVAL (operands[2]));`
243			`DONE;`
244			`})`
245
246			`(define_expand "atomic_nand"`
247			`[(set (match_operand:IMODE 0 "memory_operand" "")`
248			`(not:IMODE`
249			`(and:IMODE (match_dup 0)`
250			`(match_operand:IMODE 1 "nonmemory_operand" ""))))`
251			`(use (match_operand:SI 2 "const_int_operand" ""))]`
252			`""`
253			`{`
254			`ia64_expand_atomic_op (NOT, operands[0], operands[1], NULL, NULL,`
255			`(enum memmodel) INTVAL (operands[2]));`
256			`DONE;`
257			`})`
258
259			`(define_expand "atomic_fetch_"`
260			`[(set (match_operand:IMODE 0 "gr_register_operand" "")`
261			`(FETCHOP:IMODE`
262			`(match_operand:IMODE 1 "memory_operand" "")`
263			`(match_operand:IMODE 2 "nonmemory_operand" "")))`
264			`(use (match_operand:SI 3 "const_int_operand" ""))]`
265			`""`
266			`{`
267			`ia64_expand_atomic_op (, operands[1], operands[2], operands[0], NULL,`
268			`(enum memmodel) INTVAL (operands[3]));`
269			`DONE;`
270			`})`
271
272			`(define_expand "atomic_fetch_nand"`
273			`[(set (match_operand:IMODE 0 "gr_register_operand" "")`
274			`(not:IMODE`
275			`(and:IMODE (match_operand:IMODE 1 "memory_operand" "")`
276			`(match_operand:IMODE 2 "nonmemory_operand" ""))))`
277			`(use (match_operand:SI 3 "const_int_operand" ""))]`
278			`""`
279			`{`
280			`ia64_expand_atomic_op (NOT, operands[1], operands[2], operands[0], NULL,`
281			`(enum memmodel) INTVAL (operands[3]));`
282			`DONE;`
283			`})`
284
285			`(define_expand "atomic__fetch"`
286			`[(set (match_operand:IMODE 0 "gr_register_operand" "")`
287			`(FETCHOP:IMODE`
288			`(match_operand:IMODE 1 "memory_operand" "")`
289			`(match_operand:IMODE 2 "nonmemory_operand" "")))`
290			`(use (match_operand:SI 3 "const_int_operand" ""))]`
291			`""`
292			`{`
293			`ia64_expand_atomic_op (, operands[1], operands[2], NULL, operands[0],`
294			`(enum memmodel) INTVAL (operands[3]));`
295			`DONE;`
296			`})`
297
298			`(define_expand "atomic_nand_fetch"`
299			`[(set (match_operand:IMODE 0 "gr_register_operand" "")`
300			`(not:IMODE`
301			`(and:IMODE (match_operand:IMODE 1 "memory_operand" "")`
302			`(match_operand:IMODE 2 "nonmemory_operand" ""))))`
303			`(use (match_operand:SI 3 "const_int_operand" ""))]`
304			`""`
305			`{`
306			`ia64_expand_atomic_op (NOT, operands[1], operands[2], NULL, operands[0],`
307			`(enum memmodel) INTVAL (operands[3]));`
308			`DONE;`
309			`})`
310
311			`(define_insn "fetchadd_acq_"`
312			`[(set (match_operand:I48MODE 0 "gr_register_operand" "=r")`
313			`(match_operand:I48MODE 1 "not_postinc_memory_operand" "+S"))`
314			`(set (match_dup 1)`
315			`(unspec:I48MODE [(match_dup 1)`
316			`(match_operand:I48MODE 2 "fetchadd_operand" "n")]`
317			`UNSPEC_FETCHADD_ACQ))]`
318			`""`
319			`"fetchadd.acq %0 = %1, %2"`
320			`[(set_attr "itanium_class" "sem")])`
321
322			`(define_insn "fetchadd_rel_"`
323			`[(set (match_operand:I48MODE 0 "gr_register_operand" "=r")`
324			`(match_operand:I48MODE 1 "not_postinc_memory_operand" "+S"))`
325			`(set (match_dup 1)`
326			`(unspec:I48MODE [(match_dup 1)`
327			`(match_operand:I48MODE 2 "fetchadd_operand" "n")]`
328			`UNSPEC_FETCHADD_REL))]`
329			`""`
330			`"fetchadd.rel %0 = %1, %2"`
331			`[(set_attr "itanium_class" "sem")])`