annotate gcc/config/stormy16/constraints.md @ 68:561a7518be6b

update gcc-4.6
author Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
date Sun, 21 Aug 2011 07:07:55 +0900
parents
children 04ced10e8804
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68
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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1 ;; Constraint definitions for XSTORMY16.
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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2 ;; Copyright (C) 2011 Free Software Foundation, Inc.
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3 ;;
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4 ;; This file is part of GCC.
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5 ;;
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6 ;; GCC is free software; you can redistribute it and/or modify
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7 ;; it under the terms of the GNU General Public License as published by
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8 ;; the Free Software Foundation; either version 3, or (at your option)
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9 ;; any later version.
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10 ;;
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11 ;; GCC is distributed in the hope that it will be useful,
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12 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 ;; GNU General Public License for more details.
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15 ;;
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16 ;; You should have received a copy of the GNU General Public License
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17 ;; along with GCC; see the file COPYING3. If not see
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18 ;; <http://www.gnu.org/licenses/>.
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19
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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20 ;; Register constraints.
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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21 (define_register_constraint "a" "R0_REGS"
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22 "@internal")
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23
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24 (define_register_constraint "b" "R1_REGS"
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25 "@internal")
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26
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27 (define_register_constraint "c" "R2_REGS"
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28 "@internal")
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29
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30 (define_register_constraint "d" "R8_REGS"
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31 "@internal")
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32
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33 (define_register_constraint "e" "EIGHT_REGS"
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34 "@internal")
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35
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36 (define_register_constraint "t" "TWO_REGS"
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37 "@internal")
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38
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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39 (define_register_constraint "z" "ICALL_REGS"
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40 "@internal")
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41
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42 ;; Integer constraints.
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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43 (define_constraint "I"
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44 "An integer between 0 and 3."
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45 (and (match_code "const_int")
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46 (match_test "IN_RANGE (ival, 0, 3)")))
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47
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48 (define_constraint "J"
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49 "A power of two."
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50 (and (match_code "const_int")
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51 (match_test "exact_log2 (ival) != -1")))
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52
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53 (define_constraint "K"
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54 "A power of two when inverted."
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55 (and (match_code "const_int")
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56 (match_test "exact_log2 (~ival) != -1")))
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57
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58 (define_constraint "L"
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59 "An 8-bit unsigned integer."
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60 (and (match_code "const_int")
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61 (match_test "IN_RANGE (ival, 0, 255)")))
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62
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63 (define_constraint "M"
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64 "An integer between -255 and 0."
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65 (and (match_code "const_int")
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66 (match_test "IN_RANGE (ival, -255, 0)")))
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67
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68 (define_constraint "N"
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69 "An integer between -3 and 0."
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70 (and (match_code "const_int")
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71 (match_test "IN_RANGE (ival, -3, 0)")))
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72
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73 (define_constraint "O"
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74 "An integer between 1 and 4."
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75 (and (match_code "const_int")
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76 (match_test "IN_RANGE (ival, 1, 4)")))
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77
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78 (define_constraint "P"
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79 "An integer between -4 and -1."
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80 (and (match_code "const_int")
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81 (match_test "IN_RANGE (ival, -4, -1)")))
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82
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83 ;; Extra constraints.
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84 (define_constraint "Q"
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85 "A register push operation."
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86 (and (match_code "mem")
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87 (match_code "post_inc" "0")
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88 (match_test "XEXP (XEXP (op, 0), 0) == stack_pointer_rtx")))
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89
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90 (define_constraint "R"
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91 "A register pop operation."
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92 (and (match_code "mem")
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93 (match_code "pre_dec" "0")
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94 (match_test "XEXP (XEXP (op, 0), 0) == stack_pointer_rtx")))
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95
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96 (define_constraint "S"
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97 "An immediate memory address."
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98 (and (match_code "mem")
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99 (match_code "const_int" "0")
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100 (match_test "xstormy16_legitimate_address_p (VOIDmode, XEXP (op, 0), false)")))
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101
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102 (define_constraint "T"
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103 "@internal"
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104 ;; For Rx; not implemented yet.
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105 (match_test "0"))
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106
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107 (define_constraint "U"
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108 "An integer not between 2 and 15."
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109 (and (match_code "const_int")
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110 (match_test "!IN_RANGE (ival, 2, 15)")))
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111
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112 (define_constraint "W"
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113 "@internal"
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114 (match_operand 0 "xstormy16_below100_operand"))
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115
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116 (define_constraint "Z"
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117 "Zero."
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118 (and (match_code "const_int")
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119 (match_test "ival == 0")))