gcc/config/mn10300/constraints.md

   1 ;; Constraint definitions for the MN10300.
   2 ;; Copyright (C) 2007-2020 Free Software Foundation, Inc.
   3 ;;
   4 ;; This file is part of GCC.
   5 ;;
   6 ;; GCC is free software; you can redistribute it and/or modify
   7 ;; it under the terms of the GNU General Public License as published by
   8 ;; the Free Software Foundation; either version 3, or (at your option)
   9 ;; any later version.
  10 ;;
  11 ;; GCC is distributed in the hope that it will be useful,
  12 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 ;; GNU General Public License for more details.
  15 ;;
  16 ;; You should have received a copy of the GNU General Public License
  17 ;; along with GCC; see the file COPYING3.  If not see
  18 ;; <http://www.gnu.org/licenses/>.
  19
  20 (define_register_constraint "d" "DATA_REGS"
  21   "A data register.")
  22
  23 (define_register_constraint "a" "ADDRESS_REGS"
  24   "An address register.")
  25
  26 ;; This can be used for QI/HImode memory operations, and most arithmetic.
  27 ;; AM33 supports these on all registers, where MN103 needs DATA_REGS.
  28 (define_register_constraint "D" "TARGET_AM33 ? GENERAL_REGS : DATA_REGS"
  29   "A general register for AM33, and a data register otherwise.")
  30
  31 ;; Similarly for ADDRESS_REGS vs GENERAL_REGS.
  32 (define_register_constraint "A" "TARGET_AM33 ? GENERAL_REGS : ADDRESS_REGS"
  33   "A general register for AM33, and an address register otherwise.")
  34
  35 (define_register_constraint "y" "SP_REGS"
  36   "An SP register (if available).")
  37
  38 (define_register_constraint "z" "MDR_REGS"
  39   "The MDR register.")
  40
  41 (define_register_constraint "x" "TARGET_AM33 ? EXTENDED_REGS : NO_REGS"
  42   "An extended register.")
  43
  44 (define_register_constraint "f" "TARGET_AM33_2 ? FP_REGS : NO_REGS"
  45   "A floating point register.")
  46
  47 (define_register_constraint "c" "TARGET_AM33_2 ? FP_ACC_REGS : NO_REGS"
  48   "A floating point accumulator register.")
  49
  50 (define_memory_constraint "Q"
  51   "@internal"
  52   (and (match_code "mem")
  53        (match_test "!CONSTANT_ADDRESS_P (XEXP (op, 0))")))
  54
  55 (define_constraint "S"
  56   "@internal"
  57   (if_then_else (match_test "flag_pic")
  58         (and (match_test "GET_CODE (op) == UNSPEC")
  59              (ior (match_test "XINT (op, 1) == UNSPEC_PLT")
  60                   (match_test "XINT (op, 1) == UNSPEC_PIC")
  61                   (match_test "XINT (op, 1) == UNSPEC_GOTSYM_OFF")))
  62         (match_test "GET_CODE (op) == SYMBOL_REF")))
  63
  64 ;; Integer constraints
  65
  66 (define_constraint "I"
  67   "An integer zero."
  68   (and (match_code "const_int")
  69        (match_test "ival == 0")))
  70
  71 (define_constraint "J"
  72   "An integer one."
  73   (and (match_code "const_int")
  74        (match_test "ival == 1")))
  75
  76 (define_constraint "K"
  77   "An integer two."
  78   (and (match_code "const_int")
  79        (match_test "ival == 2")))
  80
  81 (define_constraint "L"
  82   "An integer four."
  83   (and (match_code "const_int")
  84        (match_test "ival == 4")))
  85
  86 (define_constraint "M"
  87   "An integer three."
  88   (and (match_code "const_int")
  89        (match_test "ival == 3")))
  90
  91 (define_constraint "N"
  92   "An integer of either 255 or 65535."
  93   (and (match_code "const_int")
  94        (ior (match_test "ival == 255")
  95             (match_test "ival == 65535"))))
  96
  97 (define_constraint "O"
  98   "An integer between -8 and +7 inclusive."
  99   (and (match_code "const_int")
 100        (and (match_test "ival >= -8")
 101             (match_test "ival <=  7"))))
 102
 103 ;; Floating-point constraints
 104 (define_constraint "G"
 105   "Floating-point zero."
 106   (and (match_code "const_double")
 107        (match_test "op == CONST0_RTX (mode)")))