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;; Predicate definitions for S/390 and zSeries.
;; Copyright (C) 2005, 2007 Free Software Foundation, Inc.
;; Contributed by Hartmut Penner (hpenner@de.ibm.com) and
;;                Ulrich Weigand (uweigand@de.ibm.com).
;;
;; This file is part of GCC.
;;
;; GCC is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation; either version 3, or (at your option)
;; any later version.
;;
;; GCC is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;; GNU General Public License for more details.
;;
;; You should have received a copy of the GNU General Public License
;; along with GCC; see the file COPYING3.  If not see
;; .
 
;; OP is the current operation.
;; MODE is the current operation mode.
 
;; operands --------------------------------------------------------------
 
;; Return true if OP a (const_int 0) operand.
 
(define_predicate "const0_operand"
  (and (match_code "const_int, const_double")
       (match_test "op == CONST0_RTX (mode)")))
 
;; Return true if OP is constant.
 
(define_special_predicate "consttable_operand"
  (and (match_code "symbol_ref, label_ref, const, const_int, const_double")
       (match_test "CONSTANT_P (op)")))
 
;; Return true if OP is a valid S-type operand.
 
(define_predicate "s_operand"
  (and (match_code "subreg, mem")
       (match_operand 0 "general_operand"))
{
  /* Just like memory_operand, allow (subreg (mem ...))
     after reload.  */
  if (reload_completed
      && GET_CODE (op) == SUBREG
      && GET_CODE (SUBREG_REG (op)) == MEM)
    op = SUBREG_REG (op);
 
  if (GET_CODE (op) != MEM)
    return false;
  if (!s390_legitimate_address_without_index_p (op))
    return false;
 
  return true;
})
 
;; Return true if OP is a valid operand for the BRAS instruction.
;; Allow SYMBOL_REFs and @PLT stubs.
 
(define_special_predicate "bras_sym_operand"
  (ior (and (match_code "symbol_ref")
            (match_test "!flag_pic || SYMBOL_REF_LOCAL_P (op)"))
       (and (match_code "const")
            (and (match_test "GET_CODE (XEXP (op, 0)) == UNSPEC")
                 (match_test "XINT (XEXP (op, 0), 1) == UNSPEC_PLT")))))
 
;; Return true if OP is a PLUS that is not a legitimate
;; operand for the LA instruction.
 
(define_predicate "s390_plus_operand"
  (and (match_code "plus")
       (and (match_test "mode == Pmode")
            (match_test "!legitimate_la_operand_p (op)"))))
 
;; Return true if OP is a valid operand as shift count or setmem.
 
(define_predicate "shift_count_or_setmem_operand"
  (match_code "reg, subreg, plus, const_int")
{
  HOST_WIDE_INT offset;
  rtx base;
 
  /* Extract base register and offset.  */
  if (!s390_decompose_shift_count (op, &base, &offset))
    return false;
 
  /* Don't allow any non-base hard registers.  Doing so without
     confusing reload and/or regrename would be tricky, and doesn't
     buy us much anyway.  */
  if (base && REGNO (base) < FIRST_PSEUDO_REGISTER && !ADDR_REG_P (base))
    return false;
 
  /* Unfortunately we have to reject constants that are invalid
     for an address, or else reload will get confused.  */
  if (!DISP_IN_RANGE (offset))
    return false;
 
  return true;
})
 
;;  Return true if OP a valid operand for the LARL instruction.
 
(define_predicate "larl_operand"
  (match_code "label_ref, symbol_ref, const, const_int, const_double")
{
  /* Allow labels and local symbols.  */
  if (GET_CODE (op) == LABEL_REF)
    return true;
  if (GET_CODE (op) == SYMBOL_REF)
    return ((SYMBOL_REF_FLAGS (op) & SYMBOL_FLAG_ALIGN1) == 0
            && SYMBOL_REF_TLS_MODEL (op) == 0
            && (!flag_pic || SYMBOL_REF_LOCAL_P (op)));
 
  /* Everything else must have a CONST, so strip it.  */
  if (GET_CODE (op) != CONST)
    return false;
  op = XEXP (op, 0);
 
  /* Allow adding *even* in-range constants.  */
  if (GET_CODE (op) == PLUS)
    {
      if (GET_CODE (XEXP (op, 1)) != CONST_INT
          || (INTVAL (XEXP (op, 1)) & 1) != 0)
        return false;
      if (INTVAL (XEXP (op, 1)) >= (HOST_WIDE_INT)1 << 31
          || INTVAL (XEXP (op, 1)) < -((HOST_WIDE_INT)1 << 31))
        return false;
      op = XEXP (op, 0);
    }
 
  /* Labels and local symbols allowed here as well.  */
  if (GET_CODE (op) == LABEL_REF)
    return true;
  if (GET_CODE (op) == SYMBOL_REF)
    return ((SYMBOL_REF_FLAGS (op) & SYMBOL_FLAG_ALIGN1) == 0
            && SYMBOL_REF_TLS_MODEL (op) == 0
            && (!flag_pic || SYMBOL_REF_LOCAL_P (op)));
 
  /* Now we must have a @GOTENT offset or @PLT stub
     or an @INDNTPOFF TLS offset.  */
  if (GET_CODE (op) == UNSPEC
      && XINT (op, 1) == UNSPEC_GOTENT)
    return true;
  if (GET_CODE (op) == UNSPEC
      && XINT (op, 1) == UNSPEC_PLT)
    return true;
  if (GET_CODE (op) == UNSPEC
      && XINT (op, 1) == UNSPEC_INDNTPOFF)
    return true;
 
  return false;
})
 
;; operators --------------------------------------------------------------
 
;; Return nonzero if OP is a valid comparison operator
;; for a branch condition.
 
(define_predicate "s390_comparison"
  (match_code "eq, ne, lt, gt, le, ge, ltu, gtu, leu, geu,
               uneq, unlt, ungt, unle, unge, ltgt,
               unordered, ordered")
{
  if (GET_CODE (XEXP (op, 0)) != REG
      || REGNO (XEXP (op, 0)) != CC_REGNUM
      || XEXP (op, 1) != const0_rtx)
    return false;
 
  return (s390_branch_condition_mask (op) >= 0);
})
 
;; Return nonzero if OP is a valid comparison operator
;; for an ALC condition.
 
(define_predicate "s390_alc_comparison"
  (match_code "zero_extend, sign_extend, ltu, gtu, leu, geu")
{
  while (GET_CODE (op) == ZERO_EXTEND || GET_CODE (op) == SIGN_EXTEND)
    op = XEXP (op, 0);
 
  if (!COMPARISON_P (op))
    return false;
 
  if (GET_CODE (XEXP (op, 0)) != REG
      || REGNO (XEXP (op, 0)) != CC_REGNUM
      || XEXP (op, 1) != const0_rtx)
    return false;
 
  switch (GET_MODE (XEXP (op, 0)))
    {
    case CCL1mode:
      return GET_CODE (op) == LTU;
 
    case CCL2mode:
      return GET_CODE (op) == LEU;
 
    case CCL3mode:
      return GET_CODE (op) == GEU;
 
    case CCUmode:
      return GET_CODE (op) == GTU;
 
    case CCURmode:
      return GET_CODE (op) == LTU;
 
    case CCSmode:
      return GET_CODE (op) == UNGT;
 
    case CCSRmode:
      return GET_CODE (op) == UNLT;
 
    default:
      return false;
    }
})
 
;; Return nonzero if OP is a valid comparison operator
;; for an SLB condition.
 
(define_predicate "s390_slb_comparison"
  (match_code "zero_extend, sign_extend, ltu, gtu, leu, geu")
{
  while (GET_CODE (op) == ZERO_EXTEND || GET_CODE (op) == SIGN_EXTEND)
    op = XEXP (op, 0);
 
  if (!COMPARISON_P (op))
    return false;
 
  if (GET_CODE (XEXP (op, 0)) != REG
      || REGNO (XEXP (op, 0)) != CC_REGNUM
      || XEXP (op, 1) != const0_rtx)
    return false;
 
  switch (GET_MODE (XEXP (op, 0)))
    {
    case CCL1mode:
      return GET_CODE (op) == GEU;
 
    case CCL2mode:
      return GET_CODE (op) == GTU;
 
    case CCL3mode:
      return GET_CODE (op) == LTU;
 
    case CCUmode:
      return GET_CODE (op) == LEU;
 
    case CCURmode:
      return GET_CODE (op) == GEU;
 
    case CCSmode:
      return GET_CODE (op) == LE;
 
    case CCSRmode:
      return GET_CODE (op) == GE;
 
    default:
      return false;
    }
})
 
;; Return true if OP is a load multiple operation.  It is known to be a
;; PARALLEL and the first section will be tested.
 
(define_special_predicate "load_multiple_operation"
  (match_code "parallel")
{
  enum machine_mode elt_mode;
  int count = XVECLEN (op, 0);
  unsigned int dest_regno;
  rtx src_addr;
  int i, off;
 
  /* Perform a quick check so we don't blow up below.  */
  if (count <= 1
      || GET_CODE (XVECEXP (op, 0, 0)) != SET
      || GET_CODE (SET_DEST (XVECEXP (op, 0, 0))) != REG
      || GET_CODE (SET_SRC (XVECEXP (op, 0, 0))) != MEM)
    return false;
 
  dest_regno = REGNO (SET_DEST (XVECEXP (op, 0, 0)));
  src_addr = XEXP (SET_SRC (XVECEXP (op, 0, 0)), 0);
  elt_mode = GET_MODE (SET_DEST (XVECEXP (op, 0, 0)));
 
  /* Check, is base, or base + displacement.  */
 
  if (GET_CODE (src_addr) == REG)
    off = 0;
  else if (GET_CODE (src_addr) == PLUS
           && GET_CODE (XEXP (src_addr, 0)) == REG
           && GET_CODE (XEXP (src_addr, 1)) == CONST_INT)
    {
      off = INTVAL (XEXP (src_addr, 1));
      src_addr = XEXP (src_addr, 0);
    }
  else
    return false;
 
  for (i = 1; i < count; i++)
    {
      rtx elt = XVECEXP (op, 0, i);
 
      if (GET_CODE (elt) != SET
          || GET_CODE (SET_DEST (elt)) != REG
          || GET_MODE (SET_DEST (elt)) != elt_mode
          || REGNO (SET_DEST (elt)) != dest_regno + i
          || GET_CODE (SET_SRC (elt)) != MEM
          || GET_MODE (SET_SRC (elt)) != elt_mode
          || GET_CODE (XEXP (SET_SRC (elt), 0)) != PLUS
          || ! rtx_equal_p (XEXP (XEXP (SET_SRC (elt), 0), 0), src_addr)
          || GET_CODE (XEXP (XEXP (SET_SRC (elt), 0), 1)) != CONST_INT
          || INTVAL (XEXP (XEXP (SET_SRC (elt), 0), 1))
             != off + i * GET_MODE_SIZE (elt_mode))
        return false;
    }
 
  return true;
})
 
;; Return true if OP is a store multiple operation.  It is known to be a
;; PARALLEL and the first section will be tested.
 
(define_special_predicate "store_multiple_operation"
  (match_code "parallel")
{
  enum machine_mode elt_mode;
  int count = XVECLEN (op, 0);
  unsigned int src_regno;
  rtx dest_addr;
  int i, off;
 
  /* Perform a quick check so we don't blow up below.  */
  if (count <= 1
      || GET_CODE (XVECEXP (op, 0, 0)) != SET
      || GET_CODE (SET_DEST (XVECEXP (op, 0, 0))) != MEM
      || GET_CODE (SET_SRC (XVECEXP (op, 0, 0))) != REG)
    return false;
 
  src_regno = REGNO (SET_SRC (XVECEXP (op, 0, 0)));
  dest_addr = XEXP (SET_DEST (XVECEXP (op, 0, 0)), 0);
  elt_mode = GET_MODE (SET_SRC (XVECEXP (op, 0, 0)));
 
  /* Check, is base, or base + displacement.  */
 
  if (GET_CODE (dest_addr) == REG)
    off = 0;
  else if (GET_CODE (dest_addr) == PLUS
           && GET_CODE (XEXP (dest_addr, 0)) == REG
           && GET_CODE (XEXP (dest_addr, 1)) == CONST_INT)
    {
      off = INTVAL (XEXP (dest_addr, 1));
      dest_addr = XEXP (dest_addr, 0);
    }
  else
    return false;
 
  for (i = 1; i < count; i++)
    {
      rtx elt = XVECEXP (op, 0, i);
 
      if (GET_CODE (elt) != SET
          || GET_CODE (SET_SRC (elt)) != REG
          || GET_MODE (SET_SRC (elt)) != elt_mode
          || REGNO (SET_SRC (elt)) != src_regno + i
          || GET_CODE (SET_DEST (elt)) != MEM
          || GET_MODE (SET_DEST (elt)) != elt_mode
          || GET_CODE (XEXP (SET_DEST (elt), 0)) != PLUS
          || ! rtx_equal_p (XEXP (XEXP (SET_DEST (elt), 0), 0), dest_addr)
          || GET_CODE (XEXP (XEXP (SET_DEST (elt), 0), 1)) != CONST_INT
          || INTVAL (XEXP (XEXP (SET_DEST (elt), 0), 1))
             != off + i * GET_MODE_SIZE (elt_mode))
        return false;
    }
  return true;
})

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[/] [openrisc/] [trunk/] [gnu-old/] [gcc-4.2.2/] [gcc/] [config/] [s390/] [predicates.md] - Blame information for rev 858

Line No.	Rev	Author	Line
1	38	julius	`;; Predicate definitions for S/390 and zSeries.`
2			`;; Copyright (C) 2005, 2007 Free Software Foundation, Inc.`
3			`;; Contributed by Hartmut Penner (hpenner@de.ibm.com) and`
4			`;; Ulrich Weigand (uweigand@de.ibm.com).`
5			`;;`
6			`;; This file is part of GCC.`
7			`;;`
8			`;; GCC is free software; you can redistribute it and/or modify`
9			`;; it under the terms of the GNU General Public License as published by`
10			`;; the Free Software Foundation; either version 3, or (at your option)`
11			`;; any later version.`
12			`;;`
13			`;; GCC is distributed in the hope that it will be useful,`
14			`;; but WITHOUT ANY WARRANTY; without even the implied warranty of`
15			`;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the`
16			`;; GNU General Public License for more details.`
17			`;;`
18			`;; You should have received a copy of the GNU General Public License`
19			`;; along with GCC; see the file COPYING3. If not see`
20			`;; .`
21
22			`;; OP is the current operation.`
23			`;; MODE is the current operation mode.`
24
25			`;; operands --------------------------------------------------------------`
26
27			`;; Return true if OP a (const_int 0) operand.`
28
29			`(define_predicate "const0_operand"`
30			`(and (match_code "const_int, const_double")`
31			`(match_test "op == CONST0_RTX (mode)")))`
32
33			`;; Return true if OP is constant.`
34
35			`(define_special_predicate "consttable_operand"`
36			`(and (match_code "symbol_ref, label_ref, const, const_int, const_double")`
37			`(match_test "CONSTANT_P (op)")))`
38
39			`;; Return true if OP is a valid S-type operand.`
40
41			`(define_predicate "s_operand"`
42			`(and (match_code "subreg, mem")`
43			`(match_operand 0 "general_operand"))`
44			`{`
45			`/* Just like memory_operand, allow (subreg (mem ...))`
46			`after reload. */`
47			`if (reload_completed`
48			`&& GET_CODE (op) == SUBREG`
49			`&& GET_CODE (SUBREG_REG (op)) == MEM)`
50			`op = SUBREG_REG (op);`
51
52			`if (GET_CODE (op) != MEM)`
53			`return false;`
54			`if (!s390_legitimate_address_without_index_p (op))`
55			`return false;`
56
57			`return true;`
58			`})`
59
60			`;; Return true if OP is a valid operand for the BRAS instruction.`
61			`;; Allow SYMBOL_REFs and @PLT stubs.`
62
63			`(define_special_predicate "bras_sym_operand"`
64			`(ior (and (match_code "symbol_ref")`
65			`(match_test "!flag_pic \|\| SYMBOL_REF_LOCAL_P (op)"))`
66			`(and (match_code "const")`
67			`(and (match_test "GET_CODE (XEXP (op, 0)) == UNSPEC")`
68			`(match_test "XINT (XEXP (op, 0), 1) == UNSPEC_PLT")))))`
69
70			`;; Return true if OP is a PLUS that is not a legitimate`
71			`;; operand for the LA instruction.`
72
73			`(define_predicate "s390_plus_operand"`
74			`(and (match_code "plus")`
75			`(and (match_test "mode == Pmode")`
76			`(match_test "!legitimate_la_operand_p (op)"))))`
77
78			`;; Return true if OP is a valid operand as shift count or setmem.`
79
80			`(define_predicate "shift_count_or_setmem_operand"`
81			`(match_code "reg, subreg, plus, const_int")`
82			`{`
83			`HOST_WIDE_INT offset;`
84			`rtx base;`
85
86			`/* Extract base register and offset. */`
87			`if (!s390_decompose_shift_count (op, &base, &offset))`
88			`return false;`
89
90			`/* Don't allow any non-base hard registers. Doing so without`
91			`confusing reload and/or regrename would be tricky, and doesn't`
92			`buy us much anyway. */`
93			`if (base && REGNO (base) < FIRST_PSEUDO_REGISTER && !ADDR_REG_P (base))`
94			`return false;`
95
96			`/* Unfortunately we have to reject constants that are invalid`
97			`for an address, or else reload will get confused. */`
98			`if (!DISP_IN_RANGE (offset))`
99			`return false;`
100
101			`return true;`
102			`})`
103
104			`;; Return true if OP a valid operand for the LARL instruction.`
105
106			`(define_predicate "larl_operand"`
107			`(match_code "label_ref, symbol_ref, const, const_int, const_double")`
108			`{`
109			`/* Allow labels and local symbols. */`
110			`if (GET_CODE (op) == LABEL_REF)`
111			`return true;`
112			`if (GET_CODE (op) == SYMBOL_REF)`
113			`return ((SYMBOL_REF_FLAGS (op) & SYMBOL_FLAG_ALIGN1) == 0`
114			`&& SYMBOL_REF_TLS_MODEL (op) == 0`
115			`&& (!flag_pic \|\| SYMBOL_REF_LOCAL_P (op)));`
116
117			`/* Everything else must have a CONST, so strip it. */`
118			`if (GET_CODE (op) != CONST)`
119			`return false;`
120			`op = XEXP (op, 0);`
121
122			`/* Allow adding even in-range constants. */`
123			`if (GET_CODE (op) == PLUS)`
124			`{`
125			`if (GET_CODE (XEXP (op, 1)) != CONST_INT`
126			`\|\| (INTVAL (XEXP (op, 1)) & 1) != 0)`
127			`return false;`
128			`if (INTVAL (XEXP (op, 1)) >= (HOST_WIDE_INT)1 << 31`
129			`\|\| INTVAL (XEXP (op, 1)) < -((HOST_WIDE_INT)1 << 31))`
130			`return false;`
131			`op = XEXP (op, 0);`
132			`}`
133
134			`/* Labels and local symbols allowed here as well. */`
135			`if (GET_CODE (op) == LABEL_REF)`
136			`return true;`
137			`if (GET_CODE (op) == SYMBOL_REF)`
138			`return ((SYMBOL_REF_FLAGS (op) & SYMBOL_FLAG_ALIGN1) == 0`
139			`&& SYMBOL_REF_TLS_MODEL (op) == 0`
140			`&& (!flag_pic \|\| SYMBOL_REF_LOCAL_P (op)));`
141
142			`/* Now we must have a @GOTENT offset or @PLT stub`
143			`or an @INDNTPOFF TLS offset. */`
144			`if (GET_CODE (op) == UNSPEC`
145			`&& XINT (op, 1) == UNSPEC_GOTENT)`
146			`return true;`
147			`if (GET_CODE (op) == UNSPEC`
148			`&& XINT (op, 1) == UNSPEC_PLT)`
149			`return true;`
150			`if (GET_CODE (op) == UNSPEC`
151			`&& XINT (op, 1) == UNSPEC_INDNTPOFF)`
152			`return true;`
153
154			`return false;`
155			`})`
156
157			`;; operators --------------------------------------------------------------`
158
159			`;; Return nonzero if OP is a valid comparison operator`
160			`;; for a branch condition.`
161
162			`(define_predicate "s390_comparison"`
163			`(match_code "eq, ne, lt, gt, le, ge, ltu, gtu, leu, geu,`
164			`uneq, unlt, ungt, unle, unge, ltgt,`
165			`unordered, ordered")`
166			`{`
167			`if (GET_CODE (XEXP (op, 0)) != REG`
168			`\|\| REGNO (XEXP (op, 0)) != CC_REGNUM`
169			`\|\| XEXP (op, 1) != const0_rtx)`
170			`return false;`
171
172			`return (s390_branch_condition_mask (op) >= 0);`
173			`})`
174
175			`;; Return nonzero if OP is a valid comparison operator`
176			`;; for an ALC condition.`
177
178			`(define_predicate "s390_alc_comparison"`
179			`(match_code "zero_extend, sign_extend, ltu, gtu, leu, geu")`
180			`{`
181			`while (GET_CODE (op) == ZERO_EXTEND \|\| GET_CODE (op) == SIGN_EXTEND)`
182			`op = XEXP (op, 0);`
183
184			`if (!COMPARISON_P (op))`
185			`return false;`
186
187			`if (GET_CODE (XEXP (op, 0)) != REG`
188			`\|\| REGNO (XEXP (op, 0)) != CC_REGNUM`
189			`\|\| XEXP (op, 1) != const0_rtx)`
190			`return false;`
191
192			`switch (GET_MODE (XEXP (op, 0)))`
193			`{`
194			`case CCL1mode:`
195			`return GET_CODE (op) == LTU;`
196
197			`case CCL2mode:`
198			`return GET_CODE (op) == LEU;`
199
200			`case CCL3mode:`
201			`return GET_CODE (op) == GEU;`
202
203			`case CCUmode:`
204			`return GET_CODE (op) == GTU;`
205
206			`case CCURmode:`
207			`return GET_CODE (op) == LTU;`
208
209			`case CCSmode:`
210			`return GET_CODE (op) == UNGT;`
211
212			`case CCSRmode:`
213			`return GET_CODE (op) == UNLT;`
214
215			`default:`
216			`return false;`
217			`}`
218			`})`
219
220			`;; Return nonzero if OP is a valid comparison operator`
221			`;; for an SLB condition.`
222
223			`(define_predicate "s390_slb_comparison"`
224			`(match_code "zero_extend, sign_extend, ltu, gtu, leu, geu")`
225			`{`
226			`while (GET_CODE (op) == ZERO_EXTEND \|\| GET_CODE (op) == SIGN_EXTEND)`
227			`op = XEXP (op, 0);`
228
229			`if (!COMPARISON_P (op))`
230			`return false;`
231
232			`if (GET_CODE (XEXP (op, 0)) != REG`
233			`\|\| REGNO (XEXP (op, 0)) != CC_REGNUM`
234			`\|\| XEXP (op, 1) != const0_rtx)`
235			`return false;`
236
237			`switch (GET_MODE (XEXP (op, 0)))`
238			`{`
239			`case CCL1mode:`
240			`return GET_CODE (op) == GEU;`
241
242			`case CCL2mode:`
243			`return GET_CODE (op) == GTU;`
244
245			`case CCL3mode:`
246			`return GET_CODE (op) == LTU;`
247
248			`case CCUmode:`
249			`return GET_CODE (op) == LEU;`
250
251			`case CCURmode:`
252			`return GET_CODE (op) == GEU;`
253
254			`case CCSmode:`
255			`return GET_CODE (op) == LE;`
256
257			`case CCSRmode:`
258			`return GET_CODE (op) == GE;`
259
260			`default:`
261			`return false;`
262			`}`
263			`})`
264
265			`;; Return true if OP is a load multiple operation. It is known to be a`
266			`;; PARALLEL and the first section will be tested.`
267
268			`(define_special_predicate "load_multiple_operation"`
269			`(match_code "parallel")`
270			`{`
271			`enum machine_mode elt_mode;`
272			`int count = XVECLEN (op, 0);`
273			`unsigned int dest_regno;`
274			`rtx src_addr;`
275			`int i, off;`
276
277			`/* Perform a quick check so we don't blow up below. */`
278			`if (count <= 1`
279			`\|\| GET_CODE (XVECEXP (op, 0, 0)) != SET`
280			`\|\| GET_CODE (SET_DEST (XVECEXP (op, 0, 0))) != REG`
281			`\|\| GET_CODE (SET_SRC (XVECEXP (op, 0, 0))) != MEM)`
282			`return false;`
283
284			`dest_regno = REGNO (SET_DEST (XVECEXP (op, 0, 0)));`
285			`src_addr = XEXP (SET_SRC (XVECEXP (op, 0, 0)), 0);`
286			`elt_mode = GET_MODE (SET_DEST (XVECEXP (op, 0, 0)));`
287
288			`/* Check, is base, or base + displacement. */`
289
290			`if (GET_CODE (src_addr) == REG)`
291			`off = 0;`
292			`else if (GET_CODE (src_addr) == PLUS`
293			`&& GET_CODE (XEXP (src_addr, 0)) == REG`
294			`&& GET_CODE (XEXP (src_addr, 1)) == CONST_INT)`
295			`{`
296			`off = INTVAL (XEXP (src_addr, 1));`
297			`src_addr = XEXP (src_addr, 0);`
298			`}`
299			`else`
300			`return false;`
301
302			`for (i = 1; i < count; i++)`
303			`{`
304			`rtx elt = XVECEXP (op, 0, i);`
305
306			`if (GET_CODE (elt) != SET`
307			`\|\| GET_CODE (SET_DEST (elt)) != REG`
308			`\|\| GET_MODE (SET_DEST (elt)) != elt_mode`
309			`\|\| REGNO (SET_DEST (elt)) != dest_regno + i`
310			`\|\| GET_CODE (SET_SRC (elt)) != MEM`
311			`\|\| GET_MODE (SET_SRC (elt)) != elt_mode`
312			`\|\| GET_CODE (XEXP (SET_SRC (elt), 0)) != PLUS`
313			`\|\| ! rtx_equal_p (XEXP (XEXP (SET_SRC (elt), 0), 0), src_addr)`
314			`\|\| GET_CODE (XEXP (XEXP (SET_SRC (elt), 0), 1)) != CONST_INT`
315			`\|\| INTVAL (XEXP (XEXP (SET_SRC (elt), 0), 1))`
316			`!= off + i * GET_MODE_SIZE (elt_mode))`
317			`return false;`
318			`}`
319
320			`return true;`
321			`})`
322
323			`;; Return true if OP is a store multiple operation. It is known to be a`
324			`;; PARALLEL and the first section will be tested.`
325
326			`(define_special_predicate "store_multiple_operation"`
327			`(match_code "parallel")`
328			`{`
329			`enum machine_mode elt_mode;`
330			`int count = XVECLEN (op, 0);`
331			`unsigned int src_regno;`
332			`rtx dest_addr;`
333			`int i, off;`
334
335			`/* Perform a quick check so we don't blow up below. */`
336			`if (count <= 1`
337			`\|\| GET_CODE (XVECEXP (op, 0, 0)) != SET`
338			`\|\| GET_CODE (SET_DEST (XVECEXP (op, 0, 0))) != MEM`
339			`\|\| GET_CODE (SET_SRC (XVECEXP (op, 0, 0))) != REG)`
340			`return false;`
341
342			`src_regno = REGNO (SET_SRC (XVECEXP (op, 0, 0)));`
343			`dest_addr = XEXP (SET_DEST (XVECEXP (op, 0, 0)), 0);`
344			`elt_mode = GET_MODE (SET_SRC (XVECEXP (op, 0, 0)));`
345
346			`/* Check, is base, or base + displacement. */`
347
348			`if (GET_CODE (dest_addr) == REG)`
349			`off = 0;`
350			`else if (GET_CODE (dest_addr) == PLUS`
351			`&& GET_CODE (XEXP (dest_addr, 0)) == REG`
352			`&& GET_CODE (XEXP (dest_addr, 1)) == CONST_INT)`
353			`{`
354			`off = INTVAL (XEXP (dest_addr, 1));`
355			`dest_addr = XEXP (dest_addr, 0);`
356			`}`
357			`else`
358			`return false;`
359
360			`for (i = 1; i < count; i++)`
361			`{`
362			`rtx elt = XVECEXP (op, 0, i);`
363
364			`if (GET_CODE (elt) != SET`
365			`\|\| GET_CODE (SET_SRC (elt)) != REG`
366			`\|\| GET_MODE (SET_SRC (elt)) != elt_mode`
367			`\|\| REGNO (SET_SRC (elt)) != src_regno + i`
368			`\|\| GET_CODE (SET_DEST (elt)) != MEM`
369			`\|\| GET_MODE (SET_DEST (elt)) != elt_mode`
370			`\|\| GET_CODE (XEXP (SET_DEST (elt), 0)) != PLUS`
371			`\|\| ! rtx_equal_p (XEXP (XEXP (SET_DEST (elt), 0), 0), dest_addr)`
372			`\|\| GET_CODE (XEXP (XEXP (SET_DEST (elt), 0), 1)) != CONST_INT`
373			`\|\| INTVAL (XEXP (XEXP (SET_DEST (elt), 0), 1))`
374			`!= off + i * GET_MODE_SIZE (elt_mode))`
375			`return false;`
376			`}`
377			`return true;`
378			`})`