bd52d17906
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3.6 KiB
;; DFA scheduling description for SH-5 SHmedia instructions. ;; Copyright (C) 2004, 2005 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, 51 Franklin Street, Fifth Floor, ;; Boston, MA 02110-1301, USA.
;; 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")