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;; Scheduling description for Motorola PowerPC 750 and PowerPC 7400 processors.
;; Copyright (C) 2003-2015 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
;; <http://www.gnu.org/licenses/>.
(define_automaton "ppc7xx,ppc7xxfp")
(define_cpu_unit "iu1_7xx,iu2_7xx" "ppc7xx")
(define_cpu_unit "fpu_7xx" "ppc7xxfp")
(define_cpu_unit "lsu_7xx,bpu_7xx,sru_7xx" "ppc7xx")
(define_cpu_unit "du1_7xx,du2_7xx" "ppc7xx")
(define_cpu_unit "veccmplx_7xx,vecperm_7xx,vdu_7xx" "ppc7xx")
;; PPC740/PPC750/PPC7400 32-bit 2xIU, LSU, SRU, FPU, BPU
;; IU1 can perform all integer operations
;; IU2 can perform all integer operations except imul and idiv
;; LSU 2 stage pipelined
;; FPU 3 stage pipelined
;; Max issue 3 insns/clock cycle (includes 1 branch)
;; In-order execution
;; The PPC750 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. There is no advantage have more than 10 cycles
;; of separation.
;; This could be artificially achieved by exaggerating the latency of
;; compare insns but at the expense of a poorer schedule.
;; 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.
(define_reservation "ppc750_du" "du1_7xx|du2_7xx")
(define_reservation "ppc7400_vec_du" "vdu_7xx")
(define_insn_reservation "ppc750-load" 2
(and (eq_attr "type" "load,fpload,vecload,load_l")
(eq_attr "cpu" "ppc750,ppc7400"))
"ppc750_du,lsu_7xx")
(define_insn_reservation "ppc750-store" 2
(and (eq_attr "type" "store,fpstore,vecstore")
(eq_attr "cpu" "ppc750,ppc7400"))
"ppc750_du,lsu_7xx")
(define_insn_reservation "ppc750-storec" 8
(and (eq_attr "type" "store_c")
(eq_attr "cpu" "ppc750,ppc7400"))
"ppc750_du,lsu_7xx")
(define_insn_reservation "ppc750-integer" 1
(and (ior (eq_attr "type" "integer,insert,trap,cntlz,isel")
(and (eq_attr "type" "add,logical,shift,exts")
(eq_attr "dot" "no")))
(eq_attr "cpu" "ppc750,ppc7400"))
"ppc750_du,iu1_7xx|iu2_7xx")
(define_insn_reservation "ppc750-two" 1
(and (eq_attr "type" "two")
(eq_attr "cpu" "ppc750,ppc7400"))
"ppc750_du,iu1_7xx|iu2_7xx,iu1_7xx|iu2_7xx")
(define_insn_reservation "ppc750-three" 1
(and (eq_attr "type" "three")
(eq_attr "cpu" "ppc750,ppc7400"))
"ppc750_du,iu1_7xx|iu2_7xx,iu1_7xx|iu2_7xx,iu1_7xx|iu2_7xx")
(define_insn_reservation "ppc750-imul" 4
(and (eq_attr "type" "mul")
(eq_attr "size" "32")
(eq_attr "cpu" "ppc750,ppc7400"))
"ppc750_du,iu1_7xx*4")
(define_insn_reservation "ppc750-imul2" 3
(and (eq_attr "type" "mul")
(eq_attr "size" "16")
(eq_attr "cpu" "ppc750,ppc7400"))
"ppc750_du,iu1_7xx*2")
(define_insn_reservation "ppc750-imul3" 2
(and (eq_attr "type" "mul")
(eq_attr "size" "8")
(eq_attr "cpu" "ppc750,ppc7400"))
"ppc750_du,iu1_7xx")
(define_insn_reservation "ppc750-idiv" 19
(and (eq_attr "type" "div")
(eq_attr "cpu" "ppc750,ppc7400"))
"ppc750_du,iu1_7xx*19")
(define_insn_reservation "ppc750-compare" 2
(and (ior (eq_attr "type" "cmp")
(and (eq_attr "type" "add,logical,shift,exts")
(eq_attr "dot" "yes")))
(eq_attr "cpu" "ppc750,ppc7400"))
"ppc750_du,(iu1_7xx|iu2_7xx)")
(define_insn_reservation "ppc750-fpcompare" 2
(and (eq_attr "type" "fpcompare")
(eq_attr "cpu" "ppc750,ppc7400"))
"ppc750_du,fpu_7xx")
(define_insn_reservation "ppc750-fp" 3
(and (eq_attr "type" "fp")
(eq_attr "cpu" "ppc750,ppc7400"))
"ppc750_du,fpu_7xx")
(define_insn_reservation "ppc750-dmul" 4
(and (eq_attr "type" "dmul")
(eq_attr "cpu" "ppc750"))
"ppc750_du,fpu_7xx*2")
(define_insn_reservation "ppc7400-dmul" 3
(and (eq_attr "type" "dmul")
(eq_attr "cpu" "ppc7400"))
"ppc750_du,fpu_7xx")
; Divides are not pipelined
(define_insn_reservation "ppc750-sdiv" 17
(and (eq_attr "type" "sdiv")
(eq_attr "cpu" "ppc750,ppc7400"))
"ppc750_du,fpu_7xx*17")
(define_insn_reservation "ppc750-ddiv" 31
(and (eq_attr "type" "ddiv")
(eq_attr "cpu" "ppc750,ppc7400"))
"ppc750_du,fpu_7xx*31")
(define_insn_reservation "ppc750-mfcr" 2
(and (eq_attr "type" "mfcr,mtcr")
(eq_attr "cpu" "ppc750,ppc7400"))
"ppc750_du,iu1_7xx")
(define_insn_reservation "ppc750-crlogical" 3
(and (eq_attr "type" "cr_logical,delayed_cr")
(eq_attr "cpu" "ppc750,ppc7400"))
"nothing,sru_7xx*2")
(define_insn_reservation "ppc750-mtjmpr" 2
(and (eq_attr "type" "mtjmpr,isync,sync")
(eq_attr "cpu" "ppc750,ppc7400"))
"nothing,sru_7xx*2")
(define_insn_reservation "ppc750-mfjmpr" 3
(and (eq_attr "type" "mfjmpr")
(eq_attr "cpu" "ppc750,ppc7400"))
"nothing,sru_7xx*2")
(define_insn_reservation "ppc750-jmpreg" 1
(and (eq_attr "type" "jmpreg,branch,isync")
(eq_attr "cpu" "ppc750,ppc7400"))
"nothing,bpu_7xx")
;; Altivec
(define_insn_reservation "ppc7400-vecsimple" 1
(and (eq_attr "type" "vecsimple,veccmp")
(eq_attr "cpu" "ppc7400"))
"ppc750_du,ppc7400_vec_du,veccmplx_7xx")
(define_insn_reservation "ppc7400-veccomplex" 4
(and (eq_attr "type" "veccomplex")
(eq_attr "cpu" "ppc7400"))
"ppc750_du,ppc7400_vec_du,veccmplx_7xx")
(define_insn_reservation "ppc7400-vecfloat" 4
(and (eq_attr "type" "vecfloat")
(eq_attr "cpu" "ppc7400"))
"ppc750_du,ppc7400_vec_du,veccmplx_7xx")
(define_insn_reservation "ppc7400-vecperm" 2
(and (eq_attr "type" "vecperm")
(eq_attr "cpu" "ppc7400"))
"ppc750_du,ppc7400_vec_du,vecperm_7xx")
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