gcc/config/moxie/predicates.md

   1 ;; Predicate definitions for Moxie
   2 ;; Copyright (C) 2009-2020 Free Software Foundation, Inc.
   3 ;; Contributed by Anthony Green <green@moxielogic.com>
   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 ;; -------------------------------------------------------------------------
  22 ;; Predicates
  23 ;; -------------------------------------------------------------------------
  24
  25 ;; Nonzero if OP can be source of a simple move operation.
  26
  27 (define_predicate "moxie_general_movsrc_operand"
  28   (match_code "mem,const_int,reg,subreg,symbol_ref,label_ref,const")
  29 {
  30   /* Any (MEM LABEL_REF) is OK.  That is a pc-relative load.  */
  31   if (MEM_P (op) && GET_CODE (XEXP (op, 0)) == LABEL_REF)
  32     return 1;
  33
  34   if (MEM_P (op)
  35       && GET_CODE (XEXP (op, 0)) == PLUS
  36       && GET_CODE (XEXP (XEXP (op, 0), 0)) == REG
  37       && GET_CODE (XEXP (XEXP (op, 0), 1)) == CONST_INT
  38       && IN_RANGE (INTVAL (XEXP (XEXP (op, 0), 1)), -32768, 32767))
  39     return 1;
  40
  41   return general_operand (op, mode);
  42 })
  43
  44 ;; Nonzero if OP can be an operand to an add/inc/dec instruction.
  45
  46 (define_predicate "moxie_add_operand"
  47   (ior (match_code "reg")
  48        (and (match_code "const_int")
  49             (match_test "IN_RANGE (INTVAL (op), -255, 255)"))))
  50
  51 ;; Nonzero if OP can be an operand to an sub/dec instruction.
  52
  53 (define_predicate "moxie_sub_operand"
  54   (ior (match_code "reg")
  55        (and (match_code "const_int")
  56             (match_test "IN_RANGE (INTVAL (op), 0, 255)"))))