1 ;; Scheduling description for PowerPC 603 processor.
2 ;; Copyright (C) 2003, 2004 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 2, 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 COPYING. If not, write to the
18 ;; Free Software Foundation, 51 Franklin Street, Fifth Floor, Boston,
19 ;; MA 02110-1301, USA.
21 (define_automaton "ppc603,ppc603fp")
22 (define_cpu_unit "iu_603" "ppc603")
23 (define_cpu_unit "fpu_603" "ppc603fp")
24 (define_cpu_unit "lsu_603,bpu_603,sru_603" "ppc603")
26 ;; PPC603/PPC603e 32-bit IU, LSU, FPU, BPU, SRU
27 ;; Max issue 3 insns/clock cycle (includes 1 branch)
29 ;; Branches go straight to the BPU. All other insns are handled
30 ;; by a dispatch unit which can issue a max of 2 insns per cycle.
32 ;; The PPC603e user's manual recommends that to reduce branch mispredictions,
33 ;; the insn that sets CR bits should be separated from the branch insn
34 ;; that evaluates them; separation by more than 9 insns ensures that the CR
35 ;; bits will be immediately available for execution.
36 ;; This could be artificially achieved by exaggerating the latency of
37 ;; compare insns but at the expense of a poorer schedule.
39 ;; CR insns get executed in the SRU. Not modelled.
41 (define_insn_reservation "ppc603-load" 2
42 (and (eq_attr "type" "load,load_ext,load_ux,load_u,load_l")
43 (eq_attr "cpu" "ppc603"))
46 (define_insn_reservation "ppc603-store" 2
47 (and (eq_attr "type" "store,store_ux,store_u,fpstore,fpstore_ux,fpstore_u")
48 (eq_attr "cpu" "ppc603"))
51 (define_insn_reservation "ppc603-fpload" 2
52 (and (eq_attr "type" "fpload,fpload_ux,fpload_u")
53 (eq_attr "cpu" "ppc603"))
56 (define_insn_reservation "ppc603-storec" 8
57 (and (eq_attr "type" "store_c")
58 (eq_attr "cpu" "ppc603"))
61 (define_insn_reservation "ppc603-integer" 1
62 (and (eq_attr "type" "integer,insert_word")
63 (eq_attr "cpu" "ppc603"))
66 (define_insn_reservation "ppc603-two" 1
67 (and (eq_attr "type" "two")
68 (eq_attr "cpu" "ppc603"))
71 (define_insn_reservation "ppc603-three" 1
72 (and (eq_attr "type" "three")
73 (eq_attr "cpu" "ppc603"))
74 "iu_603,iu_603,iu_603")
76 ; This takes 2 or 3 cycles
77 (define_insn_reservation "ppc603-imul" 3
78 (and (eq_attr "type" "imul,imul_compare")
79 (eq_attr "cpu" "ppc603"))
82 (define_insn_reservation "ppc603-imul2" 2
83 (and (eq_attr "type" "imul2,imul3")
84 (eq_attr "cpu" "ppc603"))
87 (define_insn_reservation "ppc603-idiv" 37
88 (and (eq_attr "type" "idiv")
89 (eq_attr "cpu" "ppc603"))
92 (define_insn_reservation "ppc603-compare" 3
93 (and (eq_attr "type" "cmp,fast_compare,compare,delayed_compare")
94 (eq_attr "cpu" "ppc603"))
95 "iu_603,nothing,bpu_603")
97 (define_insn_reservation "ppc603-fpcompare" 3
98 (and (eq_attr "type" "fpcompare")
99 (eq_attr "cpu" "ppc603"))
100 "(fpu_603+iu_603*2),bpu_603")
102 (define_insn_reservation "ppc603-fp" 3
103 (and (eq_attr "type" "fp")
104 (eq_attr "cpu" "ppc603"))
107 (define_insn_reservation "ppc603-dmul" 4
108 (and (eq_attr "type" "dmul")
109 (eq_attr "cpu" "ppc603"))
112 ; Divides are not pipelined
113 (define_insn_reservation "ppc603-sdiv" 18
114 (and (eq_attr "type" "sdiv")
115 (eq_attr "cpu" "ppc603"))
118 (define_insn_reservation "ppc603-ddiv" 33
119 (and (eq_attr "type" "ddiv")
120 (eq_attr "cpu" "ppc603"))
123 (define_insn_reservation "ppc603-crlogical" 2
124 (and (eq_attr "type" "cr_logical,delayed_cr,mfcr,mtcr")
125 (eq_attr "cpu" "ppc603"))
128 (define_insn_reservation "ppc603-mtjmpr" 4
129 (and (eq_attr "type" "mtjmpr")
130 (eq_attr "cpu" "ppc603"))
133 (define_insn_reservation "ppc603-mfjmpr" 2
134 (and (eq_attr "type" "mfjmpr,isync,sync")
135 (eq_attr "cpu" "ppc603"))
138 (define_insn_reservation "ppc603-jmpreg" 1
139 (and (eq_attr "type" "jmpreg,branch")
140 (eq_attr "cpu" "ppc603"))