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;; DFA scheduling description for SH-5 SHmedia instructions.

;; Copyright (C) 2004, 2005, 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

;; .

;; This is just a conversion of the old model using define_function_unit.

;; When executing SHmedia code, the SH-5 is a fairly straightforward

;; single-issue machine.  It has four pipelines, the branch unit (br),

;; the integer and multimedia unit (imu), the load/store unit (lsu), and

;; the floating point unit (fpu).

(define_automaton "sh5inst_pipe, sh5fpu_pipe")

(define_cpu_unit "sh5issue" "sh5inst_pipe")

(define_cpu_unit "sh5fds" "sh5fpu_pipe")

;; Every instruction on SH-5 occupies the issue resource for at least one

;; cycle.

(define_insn_reservation "shmedia1" 1

  (and (eq_attr "pipe_model" "sh5media")

       (eq_attr "type" "!pt_media,ptabs_media,invalidate_line_media,dmpy_media,load_media,fload_media,fcmp_media,fmove_media,fparith_media,dfparith_media,fpconv_media,dfpconv_media,dfmul_media,store_media,fstore_media,mcmp_media,mac_media,d2mpy_media,atrans_media,ustore_media"))

  "sh5issue")

;; Specify the various types of instruction which have latency > 1

(define_insn_reservation "shmedia2" 2

  (and (eq_attr "pipe_model" "sh5media")

       (eq_attr "type" "mcmp_media"))

  "sh5issue")

(define_insn_reservation "shmedia3" 3

  (and (eq_attr "pipe_model" "sh5media")

       (eq_attr "type" "dmpy_media,load_media,fcmp_media,mac_media"))

  "sh5issue")

;; but see sh_adjust_cost for mac_media exception.

(define_insn_reservation "shmedia4" 4

  (and (eq_attr "pipe_model" "sh5media")

       (eq_attr "type" "fload_media,fmove_media"))

  "sh5issue")

(define_insn_reservation "shmedia_d2mpy" 4

  (and (eq_attr "pipe_model" "sh5media")

       (eq_attr "type" "d2mpy_media"))

  "sh5issue*2")

(define_insn_reservation "shmedia5" 5

  (and (eq_attr "pipe_model" "sh5media")

       (eq_attr "type" "pt_media,ptabs_media"))

  "sh5issue")

(define_insn_reservation "shmedia6" 6

  (and (eq_attr "pipe_model" "sh5media")

       (eq_attr "type" "fparith_media,dfparith_media,fpconv_media,dfpconv_media"))

  "sh5issue")

(define_insn_reservation "shmedia_invalidate" 7

  (and (eq_attr "pipe_model" "sh5media")

       (eq_attr "type" "invalidate_line_media"))

  "sh5issue*7")

(define_insn_reservation "shmedia_dfmul" 9

  (and (eq_attr "pipe_model" "sh5media") (eq_attr "type" "dfmul_media"))

  "sh5issue*4")

(define_insn_reservation "shmedia_atrans" 10

  (and (eq_attr "pipe_model" "sh5media") (eq_attr "type" "atrans_media"))

  "sh5issue*5")

;; Floating-point divide and square-root occupy an additional resource,

;; which is not internally pipelined.  However, other instructions

;; can continue to issue.

(define_insn_reservation "shmedia_fdiv" 19

  (and (eq_attr "pipe_model" "sh5media") (eq_attr "type" "fdiv_media"))

  "sh5issue+sh5fds,sh5fds*18")

(define_insn_reservation "shmedia_dfdiv" 35

  (and (eq_attr "pipe_model" "sh5media") (eq_attr "type" "dfdiv_media"))

  "sh5issue+sh5fds,sh5fds*34")