4000.md

Mac OS X 10.4.9 for x86 Source Code gcc 实现源代码

;; R4000 pipeline description.
;;   Copyright (C) 2004 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 2, 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 COPYING.  If not, write to the
;; Free Software Foundation, 59 Temple Place - Suite 330, Boston,
;; MA 02111-1307, USA.


;; This file overrides parts of generic.md.  It is derived from the
;; old define_function_unit description.

(define_insn_reservation "r4k_imul" 10
  (and (eq_attr "cpu" "r4000")
       (eq_attr "type" "imul,imadd"))
  "imuldiv*10")

(define_insn_reservation "r4k_idiv" 69
  (and (eq_attr "cpu" "r4000")
       (eq_attr "type" "idiv"))
  "imuldiv*69")