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;; Scheduling description for PowerPC 603 processor.
;; Copyright (C) 2003, 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, 51 Franklin Street, Fifth Floor, Boston,
;; MA 02110-1301, USA.
(define_automaton "ppc603,ppc603fp")
(define_cpu_unit "iu_603" "ppc603")
(define_cpu_unit "fpu_603" "ppc603fp")
(define_cpu_unit "lsu_603,bpu_603,sru_603" "ppc603")
;; PPC603/PPC603e 32-bit IU, LSU, FPU, BPU, SRU
;; Max issue 3 insns/clock cycle (includes 1 branch)
;; Branches go straight to the BPU. All other insns are handled
;; by a dispatch unit which can issue a max of 2 insns per cycle.
;; The PPC603e user's manual recommends that to reduce branch mispredictions,
;; the insn that sets CR bits should be separated from the branch insn
;; that evaluates them; separation by more than 9 insns ensures that the CR
;; bits will be immediately available for execution.
;; This could be artificially achieved by exaggerating the latency of
;; compare insns but at the expense of a poorer schedule.
;; CR insns get executed in the SRU. Not modelled.
(define_insn_reservation "ppc603-load" 2
(and (eq_attr "type" "load,load_ext,load_ux,load_u,load_l")
(eq_attr "cpu" "ppc603"))
"lsu_603")
(define_insn_reservation "ppc603-store" 2
(and (eq_attr "type" "store,store_ux,store_u,fpstore,fpstore_ux,fpstore_u")
(eq_attr "cpu" "ppc603"))
"lsu_603*2")
(define_insn_reservation "ppc603-fpload" 2
(and (eq_attr "type" "fpload,fpload_ux,fpload_u")
(eq_attr "cpu" "ppc603"))
"lsu_603")
(define_insn_reservation "ppc603-storec" 8
(and (eq_attr "type" "store_c")
(eq_attr "cpu" "ppc603"))
"lsu_603")
(define_insn_reservation "ppc603-integer" 1
(and (eq_attr "type" "integer,insert_word")
(eq_attr "cpu" "ppc603"))
"iu_603")
(define_insn_reservation "ppc603-two" 1
(and (eq_attr "type" "two")
(eq_attr "cpu" "ppc603"))
"iu_603,iu_603")
(define_insn_reservation "ppc603-three" 1
(and (eq_attr "type" "three")
(eq_attr "cpu" "ppc603"))
"iu_603,iu_603,iu_603")
; This takes 2 or 3 cycles
(define_insn_reservation "ppc603-imul" 3
(and (eq_attr "type" "imul,imul_compare")
(eq_attr "cpu" "ppc603"))
"iu_603*2")
(define_insn_reservation "ppc603-imul2" 2
(and (eq_attr "type" "imul2,imul3")
(eq_attr "cpu" "ppc603"))
"iu_603*2")
(define_insn_reservation "ppc603-idiv" 37
(and (eq_attr "type" "idiv")
(eq_attr "cpu" "ppc603"))
"iu_603*37")
(define_insn_reservation "ppc603-compare" 3
(and (eq_attr "type" "cmp,fast_compare,compare,delayed_compare")
(eq_attr "cpu" "ppc603"))
"iu_603,nothing,bpu_603")
(define_insn_reservation "ppc603-fpcompare" 3
(and (eq_attr "type" "fpcompare")
(eq_attr "cpu" "ppc603"))
"(fpu_603+iu_603*2),bpu_603")
(define_insn_reservation "ppc603-fp" 3
(and (eq_attr "type" "fp")
(eq_attr "cpu" "ppc603"))
"fpu_603")
(define_insn_reservation "ppc603-dmul" 4
(and (eq_attr "type" "dmul")
(eq_attr "cpu" "ppc603"))
"fpu_603*2")
; Divides are not pipelined
(define_insn_reservation "ppc603-sdiv" 18
(and (eq_attr "type" "sdiv")
(eq_attr "cpu" "ppc603"))
"fpu_603*18")
(define_insn_reservation "ppc603-ddiv" 33
(and (eq_attr "type" "ddiv")
(eq_attr "cpu" "ppc603"))
"fpu_603*33")
(define_insn_reservation "ppc603-crlogical" 2
(and (eq_attr "type" "cr_logical,delayed_cr,mfcr,mtcr")
(eq_attr "cpu" "ppc603"))
"sru_603")
(define_insn_reservation "ppc603-mtjmpr" 4
(and (eq_attr "type" "mtjmpr")
(eq_attr "cpu" "ppc603"))
"sru_603")
(define_insn_reservation "ppc603-mfjmpr" 2
(and (eq_attr "type" "mfjmpr,isync,sync")
(eq_attr "cpu" "ppc603"))
"sru_603")
(define_insn_reservation "ppc603-jmpreg" 1
(and (eq_attr "type" "jmpreg,branch")
(eq_attr "cpu" "ppc603"))
"bpu_603")
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