gcc/config/cr16/constraints.md

   1 ;; Predicates of machine description for CR16.
   2 ;; Copyright (C) 2012 Free Software Foundation, Inc.
   3 ;; Contributed by KPIT Cummins Infosystems Limited.
   4 ;;
   5 ;; This file is part of GCC.
   6 ;;
   7 ;; GCC is free software; you can redistribute it and/or modify it
   8 ;; under the terms of the GNU General Public License as published
   9 ;; by the Free Software Foundation; either version 3, or (at your
  10 ;; option) any later version.
  11 ;;
  12 ;; GCC is distributed in the hope that it will be useful, but WITHOUT
  13 ;; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  14 ;; or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
  15 ;; License for more details.
  16 ;;
  17 ;; You should have received a copy of the GNU General Public License
  18 ;; along with GCC; see the file COPYING3.  If not see
  19 ;; <http://www.gnu.org/licenses/>.
  20
  21 ;; Constraints
  22 ;; Register constraints
  23 (define_register_constraint "b" "NOSP_REGS"
  24   "@no sp registers")
  25
  26 (define_register_constraint "c" "SHORT_REGS"
  27   "@short registers")
  28
  29 (define_register_constraint "d" "LONG_REGS"
  30   "@long registers")
  31
  32 ;; Integer constraints.
  33 (define_constraint "I"
  34   "A signed 4-bit immediate."
  35   (and (match_code "const_int")
  36        (match_test "SIGNED_INT_FITS_N_BITS (ival, 4)")))
  37
  38 (define_constraint "J"
  39   "A signed 5-bit immediate."
  40   (and (match_code "const_int")
  41        (match_test "SIGNED_INT_FITS_N_BITS (ival, 5)")))
  42
  43 (define_constraint "K"
  44   "A signed 6-bit immediate."
  45   (and (match_code "const_int")
  46        (match_test "SIGNED_INT_FITS_N_BITS (ival, 6)")))
  47
  48 (define_constraint "L"
  49   "A unsigned 4-bit immediate."
  50   (and (match_code "const_int")
  51        (match_test "UNSIGNED_INT_FITS_N_BITS (ival, 4)")))
  52
  53 (define_constraint "M"
  54   "A unsigned and customized  4-bit immediate."
  55   (and (match_code "const_int")
  56        (match_test "(IN_RANGE_P (ival, 0, 15) && ((ival != 9) && (ival != 11)))")))
  57
  58 (define_constraint "N"
  59   "A signed 16-bit immediate."
  60   (and (match_code "const_int")
  61        (match_test "IN_RANGE_P (ival, -32768, 32767)")))
  62
  63 (define_constraint "O"
  64   "A unsigned 20-bit immediate."
  65   (and (match_code "const_int")
  66        (match_test "IN_RANGE_P (ival, 0, 1048575)")))
  67
  68 (define_constraint "Q"
  69   "A shift QI immediate."
  70   (and (match_code "const_int")
  71        (match_test "IN_RANGE_P (ival, 0, 7)")))
  72
  73 (define_constraint "R"
  74   "A shift HI immediate."
  75   (and (match_code "const_int")
  76        (match_test "IN_RANGE_P (ival, 0, 15)")))
  77
  78 (define_constraint "S"
  79   "A shift SI immediate."
  80   (and (match_code "const_int")
  81        (match_test "IN_RANGE_P (ival, 0, 31)")))