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annotate gcc/config/moxie/predicates.md @ 158:494b0b89df80 default tip

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author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Mon, 25 May 2020 18:13:55 +0900
parents 1830386684a0
children
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1 ;; Predicate definitions for Moxie
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2 ;; Copyright (C) 2009-2020 Free Software Foundation, Inc.
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3 ;; Contributed by Anthony Green <green@moxielogic.com>
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4
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5 ;; This file is part of GCC.
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6
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7 ;; GCC is free software; you can redistribute it and/or modify it
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8 ;; under the terms of the GNU General Public License as published
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9 ;; by the Free Software Foundation; either version 3, or (at your
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10 ;; option) any later version.
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11
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12 ;; GCC is distributed in the hope that it will be useful, but WITHOUT
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13 ;; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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14 ;; or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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15 ;; License for more details.
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16
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17 ;; You should have received a copy of the GNU General Public License
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18 ;; along with GCC; see the file COPYING3. If not see
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19 ;; <http://www.gnu.org/licenses/>.
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20
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21 ;; -------------------------------------------------------------------------
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22 ;; Predicates
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23 ;; -------------------------------------------------------------------------
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24
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25 ;; Nonzero if OP can be source of a simple move operation.
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26
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27 (define_predicate "moxie_general_movsrc_operand"
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28 (match_code "mem,const_int,reg,subreg,symbol_ref,label_ref,const")
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29 {
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30 /* Any (MEM LABEL_REF) is OK. That is a pc-relative load. */
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31 if (MEM_P (op) && GET_CODE (XEXP (op, 0)) == LABEL_REF)
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32 return 1;
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33
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34 if (MEM_P (op)
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35 && GET_CODE (XEXP (op, 0)) == PLUS
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36 && GET_CODE (XEXP (XEXP (op, 0), 0)) == REG
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37 && GET_CODE (XEXP (XEXP (op, 0), 1)) == CONST_INT
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38 && IN_RANGE (INTVAL (XEXP (XEXP (op, 0), 1)), -32768, 32767))
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39 return 1;
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40
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41 return general_operand (op, mode);
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42 })
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43
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44 ;; Nonzero if OP can be an operand to an add/inc/dec instruction.
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45
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46 (define_predicate "moxie_add_operand"
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47 (ior (match_code "reg")
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48 (and (match_code "const_int")
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49 (match_test "IN_RANGE (INTVAL (op), -255, 255)"))))
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50
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51 ;; Nonzero if OP can be an operand to an sub/dec instruction.
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52
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53 (define_predicate "moxie_sub_operand"
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54 (ior (match_code "reg")
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55 (and (match_code "const_int")
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56 (match_test "IN_RANGE (INTVAL (op), 0, 255)"))))