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1 ;; Predicates of machine description for CR16.
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2 ;; Copyright (C) 2012-2018 Free Software Foundation, Inc.
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3 ;; Contributed by KPIT Cummins Infosystems Limited.
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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 ;; Constraints
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22 ;; Register constraints
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23 (define_register_constraint "b" "NOSP_REGS"
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24 "@no sp registers")
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25
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26 (define_register_constraint "c" "SHORT_REGS"
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27 "@short registers")
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28
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29 (define_register_constraint "d" "LONG_REGS"
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30 "@long registers")
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31
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32 ;; Integer constraints.
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33 (define_constraint "I"
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34 "A signed 4-bit immediate."
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35 (and (match_code "const_int")
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36 (match_test "SIGNED_INT_FITS_N_BITS (ival, 4)")))
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37
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38 (define_constraint "J"
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39 "A signed 5-bit immediate."
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40 (and (match_code "const_int")
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41 (match_test "SIGNED_INT_FITS_N_BITS (ival, 5)")))
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42
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43 (define_constraint "K"
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44 "A signed 6-bit immediate."
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45 (and (match_code "const_int")
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46 (match_test "SIGNED_INT_FITS_N_BITS (ival, 6)")))
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47
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48 (define_constraint "L"
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49 "A unsigned 4-bit immediate."
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50 (and (match_code "const_int")
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51 (match_test "UNSIGNED_INT_FITS_N_BITS (ival, 4)")))
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52
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53 (define_constraint "M"
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54 "A unsigned and customized 4-bit immediate."
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55 (and (match_code "const_int")
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56 (match_test "(IN_RANGE_P (ival, 0, 15) && ((ival != 9) && (ival != 11)))")))
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57
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58 (define_constraint "N"
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59 "A signed 16-bit immediate."
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60 (and (match_code "const_int")
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61 (match_test "IN_RANGE_P (ival, -32768, 32767)")))
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62
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63 (define_constraint "O"
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64 "A unsigned 20-bit immediate."
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65 (and (match_code "const_int")
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66 (match_test "IN_RANGE_P (ival, 0, 1048575)")))
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67
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68 (define_constraint "Q"
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69 "A shift QI immediate."
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70 (and (match_code "const_int")
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71 (match_test "IN_RANGE_P (ival, 0, 7)")))
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72
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73 (define_constraint "R"
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74 "A shift HI immediate."
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75 (and (match_code "const_int")
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76 (match_test "IN_RANGE_P (ival, 0, 15)")))
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77
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78 (define_constraint "S"
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79 "A shift SI immediate."
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80 (and (match_code "const_int")
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81 (match_test "IN_RANGE_P (ival, 0, 31)")))
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