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annotate gcc/config/moxie/constraints.md @ 111:04ced10e8804

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gcc 7
author kono
date Fri, 27 Oct 2017 22:46:09 +0900
parents 77e2b8dfacca
children 84e7813d76e9
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1 ;; Constraint definitions for Moxie
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2 ;; Copyright (C) 2009-2017 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 ;; Constraints
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23 ;; -------------------------------------------------------------------------
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24
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25 (define_constraint "A"
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26 "An absolute address."
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27 (and (match_code "mem")
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28 (ior (match_test "GET_CODE (XEXP (op, 0)) == SYMBOL_REF")
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29 (match_test "GET_CODE (XEXP (op, 0)) == LABEL_REF")
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30 (match_test "GET_CODE (XEXP (op, 0)) == CONST"))))
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31
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32 (define_constraint "B"
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33 "An offset address."
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34 (and (match_code "mem")
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35 (match_test "moxie_offset_address_p (op)")))
55
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36
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37 (define_constraint "W"
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38 "A register indirect memory operand."
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39 (and (match_code "mem")
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40 (match_test "REG_P (XEXP (op, 0))
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41 && REGNO_OK_FOR_BASE_P (REGNO (XEXP (op, 0)))")))
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42
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43 (define_constraint "O"
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44 "The constant zero"
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45 (and (match_code "const_int")
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46 (match_test "ival == 0")))
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47
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48 (define_constraint "I"
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49 "An 8-bit constant (0..255)"
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50 (and (match_code "const_int")
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51 (match_test "ival >= 0 && ival <= 255")))
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52
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53 (define_constraint "N"
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54 "A constant -(0..255)"
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55 (and (match_code "const_int")
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56 (match_test "ival >= -255 && ival <= 0")))