Subversion Repositories openrisc_2011-10-31

;; 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
;; <http://www.gnu.org/licenses/>.

(define_register_constraint "d" "DATA_REGS"
  "A data register.")

(define_register_constraint "a" "ADDRESS_REGS"
  "An address register.")

(define_register_constraint "y" "SP_REGS"
  "An SP register (if available).")

(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 "A" "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_memory_constraint "R"
  "@internal"
  (and (match_code "mem")
       (match_test "mode == QImode")
       (ior (match_test "CONSTANT_ADDRESS_P (XEXP (op, 0))")
            (and (match_test "GET_CODE (XEXP (op, 0)) == REG")
                 (match_test "REG_OK_FOR_BIT_BASE_P (XEXP (op, 0))")
                 (match_test "XEXP (op, 0) != stack_pointer_rtx"))
            (and (match_test "GET_CODE (XEXP (op, 0)) == PLUS")
                 (match_test "GET_CODE (XEXP (XEXP (op, 0), 0)) == REG")
                 (match_test "REG_OK_FOR_BIT_BASE_P (XEXP (XEXP (op, 0), 0))")
                 (match_test "XEXP (XEXP (op, 0), 0) != stack_pointer_rtx")
                 (match_test "GET_CODE (XEXP (XEXP (op, 0), 1)) == CONST_INT")
                 (match_test "INT_8_BITS (INTVAL (XEXP (XEXP (op, 0), 1)))")))))

(define_memory_constraint "T"
  "@internal"
  (and (match_code "mem")
       (match_test "mode == QImode")
       (and (match_test "GET_CODE (XEXP (op, 0)) == REG")
            (match_test "REG_OK_FOR_BIT_BASE_P (XEXP (op, 0))")
            (match_test "XEXP (op, 0) != stack_pointer_rtx"))))

(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"))))

;; Floating-point constraints
(define_constraint "G"
  "Floating-point zero."
  (and (match_code "const_double")
       (match_test "op == CONST0_RTX (mode)")))