Subversion Repositories openrisc_2011-10-31

;; Scheduling description for Niagara.

;;   Copyright (C) 2006, 2007 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

;; .

;; Niagara is a single-issue processor.

(define_automaton "niagara_0")

(define_cpu_unit "niag_pipe" "niagara_0")

(define_insn_reservation "niag_5cycle" 5

  (and (eq_attr "cpu" "niagara")

    (eq_attr "type" "multi,flushw,iflush,trap"))

  "niag_pipe*5")

(define_insn_reservation "niag_4cycle" 4

  (and (eq_attr "cpu" "niagara")

    (eq_attr "type" "savew"))

  "niag_pipe*4")

/* Most basic operations are single-cycle. */

(define_insn_reservation "niag_ialu" 1

 (and (eq_attr "cpu" "niagara")

   (eq_attr "type" "ialu,shift,compare,cmove"))

 "niag_pipe")

(define_insn_reservation "niag_imul" 11

 (and (eq_attr "cpu" "niagara")

   (eq_attr "type" "imul"))

 "niag_pipe*11")

(define_insn_reservation "niag_idiv" 72

 (and (eq_attr "cpu" "niagara")

   (eq_attr "type" "idiv"))

 "niag_pipe*72")

(define_insn_reservation "niag_branch" 3

  (and (eq_attr "cpu" "niagara")

    (eq_attr "type" "call,sibcall,call_no_delay_slot,uncond_branch,branch"))

  "niag_pipe*3")

(define_insn_reservation "niag_3cycle_load" 3

  (and (eq_attr "cpu" "niagara")

    (eq_attr "type" "load"))

  "niag_pipe*3")

(define_insn_reservation "niag_9cycle_load" 9

  (and (eq_attr "cpu" "niagara")

    (eq_attr "type" "fpload"))

  "niag_pipe*9")

(define_insn_reservation "niag_1cycle_store" 1

  (and (eq_attr "cpu" "niagara")

    (eq_attr "type" "store"))

  "niag_pipe")

(define_insn_reservation "niag_8cycle_store" 8

  (and (eq_attr "cpu" "niagara")

    (eq_attr "type" "fpstore"))

  "niag_pipe*8")

/* Things incorrectly modelled here:

 *  FPADD{s,d}: 26 cycles

 *  FPSUB{s,d}: 26 cycles

 *  FABSD: 26 cycles

 *  F{s,d}TO{s,d}: 26 cycles

 *  F{s,d}TO{i,x}: 26 cycles

 *  FSMULD: 29 cycles

 */

(define_insn_reservation "niag_fmov" 8

  (and (eq_attr "cpu" "niagara")

    (eq_attr "type" "fpmove,fpcmove,fpcrmove"))

  "niag_pipe*8")

(define_insn_reservation "niag_fpcmp" 26

  (and (eq_attr "cpu" "niagara")

    (eq_attr "type" "fpcmp"))

  "niag_pipe*26")

(define_insn_reservation "niag_fmult" 29

 (and (eq_attr "cpu" "niagara")

    (eq_attr "type" "fpmul"))

  "niag_pipe*29")

(define_insn_reservation "niag_fdivs" 54

  (and (eq_attr "cpu" "niagara")

    (eq_attr "type" "fpdivs"))

  "niag_pipe*54")

(define_insn_reservation "niag_fdivd" 83

  (and (eq_attr "cpu" "niagara")

    (eq_attr "type" "fpdivd"))

  "niag_pipe*83")

/* Things incorrectly modelled here:

 *  FPADD{16,32}: 10 cycles

 *  FPSUB{16,32}: 10 cycles

 *  FALIGNDATA: 10 cycles

 */

(define_insn_reservation "niag_vis" 8

  (and (eq_attr "cpu" "niagara")

    (eq_attr "type" "fga,fgm_pack,fgm_mul,fgm_cmp,fgm_pdist"))

  "niag_pipe*8")