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;; Constraint definitions for the MN10300.

;; Copyright (C) 2007, 2008 Free Software Foundation, Inc.

;;

;; This file is part of GCC.

;;

;; GCC is free software; you can redistribute it and/or modify

;; it under the terms of the GNU General Public License as published by

;; the Free Software Foundation; either version 3, or (at your option)

;; any later version.

;;

;; GCC is distributed in the hope that it will be useful,

;; but WITHOUT ANY WARRANTY; without even the implied warranty of

;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

;; GNU General Public License for more details.

;;

;; You should have received a copy of the GNU General Public License

;; along with GCC; see the file COPYING3.  If not see

;; .

(define_register_constraint "d" "DATA_REGS"

  "A data register.")

(define_register_constraint "a" "ADDRESS_REGS"

  "An address register.")

;; This can be used for QI/HImode memory operations, and most arithmetic.

;; AM33 supports these on all registers, where MN103 needs DATA_REGS.

(define_register_constraint "D" "TARGET_AM33 ? GENERAL_REGS : DATA_REGS"

  "A general register for AM33, and a data register otherwise.")

;; Similarly for ADDRESS_REGS vs GENERAL_REGS.

(define_register_constraint "A" "TARGET_AM33 ? GENERAL_REGS : ADDRESS_REGS"

  "A general register for AM33, and an address register otherwise.")

(define_register_constraint "y" "SP_REGS"

  "An SP register (if available).")

(define_register_constraint "z" "MDR_REGS"

  "The MDR register.")

(define_register_constraint "x" "TARGET_AM33 ? EXTENDED_REGS : NO_REGS"

  "An extended register.")

(define_register_constraint "f" "TARGET_AM33_2 ? FP_REGS : NO_REGS"

  "A floating point register.")

(define_register_constraint "c" "TARGET_AM33_2 ? FP_ACC_REGS : NO_REGS"

  "A floating point accumulator register.")

(define_memory_constraint "Q"

  "@internal"

  (and (match_code "mem")

       (match_test "!CONSTANT_ADDRESS_P (XEXP (op, 0))")))

(define_constraint "S"

  "@internal"

  (if_then_else (match_test "flag_pic")

        (and (match_test "GET_CODE (op) == UNSPEC")

             (ior (match_test "XINT (op, 1) == UNSPEC_PLT")

                  (match_test "XINT (op, 1) == UNSPEC_PIC")

                  (match_test "XINT (op, 1) == UNSPEC_GOTSYM_OFF")))

        (match_test "GET_CODE (op) == SYMBOL_REF")))

;; Integer constraints

(define_constraint "I"

  "An integer zero."

  (and (match_code "const_int")

       (match_test "ival == 0")))

(define_constraint "J"

  "An integer one."

  (and (match_code "const_int")

       (match_test "ival == 1")))

(define_constraint "K"

  "An integer two."

  (and (match_code "const_int")

       (match_test "ival == 2")))

(define_constraint "L"

  "An integer four."

  (and (match_code "const_int")

       (match_test "ival == 4")))

(define_constraint "M"

  "An integer three."

  (and (match_code "const_int")

       (match_test "ival == 3")))

(define_constraint "N"

  "An integer of either 255 or 65535."

  (and (match_code "const_int")

       (ior (match_test "ival == 255")

            (match_test "ival == 65535"))))

(define_constraint "O"

  "An integer between -8 and +7 inclusive."

  (and (match_code "const_int")

       (and (match_test "ival >= -8")

            (match_test "ival <=  7"))))

;; Floating-point constraints

(define_constraint "G"

  "Floating-point zero."

  (and (match_code "const_double")

       (match_test "op == CONST0_RTX (mode)")))