1 ;; Scheduling description for PowerPC 603 processor.
2 ;; Copyright (C) 2003-2018 Free Software Foundation, Inc.
4 ;; This file is part of GCC.
6 ;; GCC is free software; you can redistribute it and/or modify it
7 ;; under the terms of the GNU General Public License as published
8 ;; by the Free Software Foundation; either version 3, or (at your
9 ;; option) any later version.
11 ;; GCC is distributed in the hope that it will be useful, but WITHOUT
12 ;; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
13 ;; or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
14 ;; License for more details.
16 ;; You should have received a copy of the GNU General Public License
17 ;; along with GCC; see the file COPYING3. If not see
18 ;; <http://www.gnu.org/licenses/>.
20 (define_automaton "ppc603,ppc603fp")
21 (define_cpu_unit "iu_603" "ppc603")
22 (define_cpu_unit "fpu_603" "ppc603fp")
23 (define_cpu_unit "lsu_603,bpu_603,sru_603" "ppc603")
25 ;; PPC603/PPC603e 32-bit IU, LSU, FPU, BPU, SRU
26 ;; Max issue 3 insns/clock cycle (includes 1 branch)
28 ;; Branches go straight to the BPU. All other insns are handled
29 ;; by a dispatch unit which can issue a max of 2 insns per cycle.
31 ;; The PPC603e user's manual recommends that to reduce branch mispredictions,
32 ;; the insn that sets CR bits should be separated from the branch insn
33 ;; that evaluates them; separation by more than 9 insns ensures that the CR
34 ;; bits will be immediately available for execution.
35 ;; This could be artificially achieved by exaggerating the latency of
36 ;; compare insns but at the expense of a poorer schedule.
38 ;; CR insns get executed in the SRU. Not modelled.
40 (define_insn_reservation "ppc603-load" 2
41 (and (eq_attr "type" "load,load_l")
42 (eq_attr "cpu" "ppc603"))
45 (define_insn_reservation "ppc603-store" 2
46 (and (eq_attr "type" "store,fpstore")
47 (eq_attr "cpu" "ppc603"))
50 (define_insn_reservation "ppc603-fpload" 2
51 (and (eq_attr "type" "fpload")
52 (eq_attr "cpu" "ppc603"))
55 (define_insn_reservation "ppc603-storec" 8
56 (and (eq_attr "type" "store_c")
57 (eq_attr "cpu" "ppc603"))
60 (define_insn_reservation "ppc603-integer" 1
61 (and (ior (eq_attr "type" "integer,insert,trap,cntlz,isel")
62 (and (eq_attr "type" "add,logical,shift,exts")
63 (eq_attr "dot" "no")))
64 (eq_attr "cpu" "ppc603"))
67 (define_insn_reservation "ppc603-two" 1
68 (and (eq_attr "type" "two")
69 (eq_attr "cpu" "ppc603"))
72 (define_insn_reservation "ppc603-three" 1
73 (and (eq_attr "type" "three")
74 (eq_attr "cpu" "ppc603"))
75 "iu_603,iu_603,iu_603")
77 ; This takes 2 or 3 cycles
78 (define_insn_reservation "ppc603-imul" 3
79 (and (eq_attr "type" "mul")
81 (eq_attr "cpu" "ppc603"))
84 (define_insn_reservation "ppc603-imul2" 2
85 (and (eq_attr "type" "mul")
86 (eq_attr "size" "8,16")
87 (eq_attr "cpu" "ppc603"))
90 (define_insn_reservation "ppc603-idiv" 37
91 (and (eq_attr "type" "div")
92 (eq_attr "cpu" "ppc603"))
95 (define_insn_reservation "ppc603-compare" 3
96 (and (ior (eq_attr "type" "cmp")
97 (and (eq_attr "type" "add,logical,shift,exts")
98 (eq_attr "dot" "yes")))
99 (eq_attr "cpu" "ppc603"))
100 "iu_603,nothing,bpu_603")
102 (define_insn_reservation "ppc603-fpcompare" 3
103 (and (eq_attr "type" "fpcompare")
104 (eq_attr "cpu" "ppc603"))
105 "(fpu_603+iu_603*2),bpu_603")
107 (define_insn_reservation "ppc603-fp" 3
108 (and (eq_attr "type" "fp,fpsimple")
109 (eq_attr "cpu" "ppc603"))
112 (define_insn_reservation "ppc603-dmul" 4
113 (and (eq_attr "type" "dmul")
114 (eq_attr "cpu" "ppc603"))
117 ; Divides are not pipelined
118 (define_insn_reservation "ppc603-sdiv" 18
119 (and (eq_attr "type" "sdiv")
120 (eq_attr "cpu" "ppc603"))
123 (define_insn_reservation "ppc603-ddiv" 33
124 (and (eq_attr "type" "ddiv")
125 (eq_attr "cpu" "ppc603"))
128 (define_insn_reservation "ppc603-crlogical" 2
129 (and (eq_attr "type" "cr_logical,delayed_cr,mfcr,mtcr")
130 (eq_attr "cpu" "ppc603"))
133 (define_insn_reservation "ppc603-mtjmpr" 4
134 (and (eq_attr "type" "mtjmpr")
135 (eq_attr "cpu" "ppc603"))
138 (define_insn_reservation "ppc603-mfjmpr" 2
139 (and (eq_attr "type" "mfjmpr,isync,sync")
140 (eq_attr "cpu" "ppc603"))
143 (define_insn_reservation "ppc603-jmpreg" 1
144 (and (eq_attr "type" "jmpreg,branch")
145 (eq_attr "cpu" "ppc603"))