1 ;; Pipeline description for Motorola PowerPC 8540 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 "ppc8540_most,ppc8540_long,ppc8540_retire")
21 (define_cpu_unit "ppc8540_decode_0,ppc8540_decode_1" "ppc8540_most")
23 ;; We don't simulate general issue queue (GIC). If we have SU insn
24 ;; and then SU1 insn, they cannot be issued on the same cycle
25 ;; (although SU1 insn and then SU insn can be issued) because the SU
26 ;; insn will go to SU1 from GIC0 entry. Fortunately, the first cycle
27 ;; multipass insn scheduling will find the situation and issue the SU1
28 ;; insn and then the SU insn.
29 (define_cpu_unit "ppc8540_issue_0,ppc8540_issue_1" "ppc8540_most")
31 ;; We could describe completion buffers slots in combination with the
32 ;; retirement units and the order of completion but the result
33 ;; automaton would behave in the same way because we cannot describe
34 ;; real latency time with taking in order completion into account.
35 ;; Actually we could define the real latency time by querying reserved
36 ;; automaton units but the current scheduler uses latency time before
37 ;; issuing insns and making any reservations.
39 ;; So our description is aimed to achieve a insn schedule in which the
40 ;; insns would not wait in the completion buffer.
41 (define_cpu_unit "ppc8540_retire_0,ppc8540_retire_1" "ppc8540_retire")
44 (define_cpu_unit "ppc8540_bu" "ppc8540_most")
47 (define_cpu_unit "ppc8540_su0_stage0,ppc8540_su1_stage0" "ppc8540_most")
49 ;; We could describe here MU subunits for float multiply, float add
50 ;; etc. But the result automaton would behave the same way as the
51 ;; described one pipeline below because MU can start only one insn
52 ;; per cycle. Actually we could simplify the automaton more not
53 ;; describing stages 1-3, the result automata would be the same.
54 (define_cpu_unit "ppc8540_mu_stage0,ppc8540_mu_stage1" "ppc8540_most")
55 (define_cpu_unit "ppc8540_mu_stage2,ppc8540_mu_stage3" "ppc8540_most")
57 ;; The following unit is used to describe non-pipelined division.
58 (define_cpu_unit "ppc8540_mu_div" "ppc8540_long")
60 ;; Here we simplified LSU unit description not describing the stages.
61 (define_cpu_unit "ppc8540_lsu" "ppc8540_most")
63 ;; The following units are used to make automata deterministic
64 (define_cpu_unit "present_ppc8540_decode_0" "ppc8540_most")
65 (define_cpu_unit "present_ppc8540_issue_0" "ppc8540_most")
66 (define_cpu_unit "present_ppc8540_retire_0" "ppc8540_retire")
67 (define_cpu_unit "present_ppc8540_su0_stage0" "ppc8540_most")
69 ;; The following sets to make automata deterministic when option ndfa is used.
70 (presence_set "present_ppc8540_decode_0" "ppc8540_decode_0")
71 (presence_set "present_ppc8540_issue_0" "ppc8540_issue_0")
72 (presence_set "present_ppc8540_retire_0" "ppc8540_retire_0")
73 (presence_set "present_ppc8540_su0_stage0" "ppc8540_su0_stage0")
75 ;; Some useful abbreviations.
76 (define_reservation "ppc8540_decode"
77 "ppc8540_decode_0|ppc8540_decode_1+present_ppc8540_decode_0")
78 (define_reservation "ppc8540_issue"
79 "ppc8540_issue_0|ppc8540_issue_1+present_ppc8540_issue_0")
80 (define_reservation "ppc8540_retire"
81 "ppc8540_retire_0|ppc8540_retire_1+present_ppc8540_retire_0")
82 (define_reservation "ppc8540_su_stage0"
83 "ppc8540_su0_stage0|ppc8540_su1_stage0+present_ppc8540_su0_stage0")
86 (define_insn_reservation "ppc8540_su" 1
87 (and (eq_attr "type" "integer,add,logical,insert,cmp,\
88 shift,trap,cntlz,exts,isel")
89 (eq_attr "cpu" "ppc8540,ppc8548"))
90 "ppc8540_decode,ppc8540_issue+ppc8540_su_stage0+ppc8540_retire")
92 (define_insn_reservation "ppc8540_two" 1
93 (and (eq_attr "type" "two")
94 (eq_attr "cpu" "ppc8540,ppc8548"))
95 "ppc8540_decode,ppc8540_issue+ppc8540_su_stage0+ppc8540_retire,\
96 ppc8540_issue+ppc8540_su_stage0+ppc8540_retire")
98 (define_insn_reservation "ppc8540_three" 1
99 (and (eq_attr "type" "three")
100 (eq_attr "cpu" "ppc8540,ppc8548"))
101 "ppc8540_decode,ppc8540_issue+ppc8540_su_stage0+ppc8540_retire,\
102 ppc8540_issue+ppc8540_su_stage0+ppc8540_retire,\
103 ppc8540_issue+ppc8540_su_stage0+ppc8540_retire")
105 ;; Branch. Actually this latency time is not used by the scheduler.
106 (define_insn_reservation "ppc8540_branch" 1
107 (and (eq_attr "type" "jmpreg,branch,isync")
108 (eq_attr "cpu" "ppc8540,ppc8548"))
109 "ppc8540_decode,ppc8540_bu,ppc8540_retire")
112 (define_insn_reservation "ppc8540_multiply" 4
113 (and (eq_attr "type" "mul")
114 (eq_attr "cpu" "ppc8540,ppc8548"))
115 "ppc8540_decode,ppc8540_issue+ppc8540_mu_stage0,ppc8540_mu_stage1,\
116 ppc8540_mu_stage2,ppc8540_mu_stage3+ppc8540_retire")
118 ;; Divide. We use the average latency time here. We omit reserving a
119 ;; retire unit because of the result automata will be huge. We ignore
120 ;; reservation of miu_stage3 here because we use the average latency
122 (define_insn_reservation "ppc8540_divide" 14
123 (and (eq_attr "type" "div")
124 (eq_attr "cpu" "ppc8540,ppc8548"))
125 "ppc8540_decode,ppc8540_issue+ppc8540_mu_stage0+ppc8540_mu_div,\
129 (define_insn_reservation "ppc8540_cr_logical" 1
130 (and (eq_attr "type" "cr_logical,delayed_cr")
131 (eq_attr "cpu" "ppc8540,ppc8548"))
132 "ppc8540_decode,ppc8540_bu,ppc8540_retire")
135 (define_insn_reservation "ppc8540_mfcr" 1
136 (and (eq_attr "type" "mfcr")
137 (eq_attr "cpu" "ppc8540,ppc8548"))
138 "ppc8540_decode,ppc8540_issue+ppc8540_su1_stage0+ppc8540_retire")
141 (define_insn_reservation "ppc8540_mtcrf" 1
142 (and (eq_attr "type" "mtcr")
143 (eq_attr "cpu" "ppc8540,ppc8548"))
144 "ppc8540_decode,ppc8540_issue+ppc8540_su1_stage0+ppc8540_retire")
147 (define_insn_reservation "ppc8540_mtjmpr" 1
148 (and (eq_attr "type" "mtjmpr,mfjmpr")
149 (eq_attr "cpu" "ppc8540,ppc8548"))
150 "ppc8540_decode,ppc8540_issue+ppc8540_su_stage0+ppc8540_retire")
153 (define_insn_reservation "ppc8540_load" 3
154 (and (eq_attr "type" "load,load_l,sync")
155 (eq_attr "cpu" "ppc8540,ppc8548"))
156 "ppc8540_decode,ppc8540_issue+ppc8540_lsu,nothing,ppc8540_retire")
159 (define_insn_reservation "ppc8540_store" 3
160 (and (eq_attr "type" "store,store_c")
161 (eq_attr "cpu" "ppc8540,ppc8548"))
162 "ppc8540_decode,ppc8540_issue+ppc8540_lsu,nothing,ppc8540_retire")
165 (define_insn_reservation "ppc8540_simple_float" 1
166 (and (eq_attr "type" "fpsimple")
167 (eq_attr "cpu" "ppc8540,ppc8548"))
168 "ppc8540_decode,ppc8540_issue+ppc8540_su_stage0+ppc8540_retire")
171 (define_insn_reservation "ppc8540_float" 4
172 (and (eq_attr "type" "fp")
173 (eq_attr "cpu" "ppc8540,ppc8548"))
174 "ppc8540_decode,ppc8540_issue+ppc8540_mu_stage0,ppc8540_mu_stage1,\
175 ppc8540_mu_stage2,ppc8540_mu_stage3+ppc8540_retire")
177 ;; float divides. We omit reserving a retire unit and miu_stage3
178 ;; because of the result automata will be huge.
179 (define_insn_reservation "ppc8540_float_vector_divide" 29
180 (and (eq_attr "type" "vecfdiv")
181 (eq_attr "cpu" "ppc8540,ppc8548"))
182 "ppc8540_decode,ppc8540_issue+ppc8540_mu_stage0+ppc8540_mu_div,\
186 (define_insn_reservation "ppc8540_brinc" 1
187 (and (eq_attr "type" "brinc")
188 (eq_attr "cpu" "ppc8540,ppc8548"))
189 "ppc8540_decode,ppc8540_issue+ppc8540_su_stage0+ppc8540_retire")
192 (define_insn_reservation "ppc8540_simple_vector" 1
193 (and (eq_attr "type" "vecsimple,veclogical,vecmove")
194 (eq_attr "cpu" "ppc8540,ppc8548"))
195 "ppc8540_decode,ppc8540_issue+ppc8540_su1_stage0+ppc8540_retire")
197 ;; Simple vector compare
198 (define_insn_reservation "ppc8540_simple_vector_compare" 1
199 (and (eq_attr "type" "veccmpsimple")
200 (eq_attr "cpu" "ppc8540,ppc8548"))
201 "ppc8540_decode,ppc8540_issue+ppc8540_su_stage0+ppc8540_retire")
204 (define_insn_reservation "ppc8540_vector_compare" 1
205 (and (eq_attr "type" "veccmp,veccmpfx")
206 (eq_attr "cpu" "ppc8540,ppc8548"))
207 "ppc8540_decode,ppc8540_issue+ppc8540_su1_stage0+ppc8540_retire")
209 ;; evsplatfi evsplati
210 (define_insn_reservation "ppc8540_vector_perm" 1
211 (and (eq_attr "type" "vecperm")
212 (eq_attr "cpu" "ppc8540,ppc8548"))
213 "ppc8540_decode,ppc8540_issue+ppc8540_su1_stage0+ppc8540_retire")
216 (define_insn_reservation "ppc8540_float_vector" 4
217 (and (eq_attr "type" "vecfloat")
218 (eq_attr "cpu" "ppc8540,ppc8548"))
219 "ppc8540_decode,ppc8540_issue+ppc8540_mu_stage0,ppc8540_mu_stage1,\
220 ppc8540_mu_stage2,ppc8540_mu_stage3+ppc8540_retire")
222 ;; Vector divides: Use the average. We omit reserving a retire unit
223 ;; because of the result automata will be huge. We ignore reservation
224 ;; of miu_stage3 here because we use the average latency time.
225 (define_insn_reservation "ppc8540_vector_divide" 14
226 (and (eq_attr "type" "vecdiv")
227 (eq_attr "cpu" "ppc8540,ppc8548"))
228 "ppc8540_decode,ppc8540_issue+ppc8540_mu_stage0+ppc8540_mu_div,\
232 (define_insn_reservation "ppc8540_complex_vector" 4
233 (and (eq_attr "type" "veccomplex")
234 (eq_attr "cpu" "ppc8540,ppc8548"))
235 "ppc8540_decode,ppc8540_issue+ppc8540_mu_stage0,ppc8540_mu_stage1,\
236 ppc8540_mu_stage2,ppc8540_mu_stage3+ppc8540_retire")
239 (define_insn_reservation "ppc8540_vector_load" 3
240 (and (eq_attr "type" "vecload")
241 (eq_attr "cpu" "ppc8540,ppc8548"))
242 "ppc8540_decode,ppc8540_issue+ppc8540_lsu,nothing,ppc8540_retire")
245 (define_insn_reservation "ppc8540_vector_store" 3
246 (and (eq_attr "type" "vecstore")
247 (eq_attr "cpu" "ppc8540,ppc8548"))
248 "ppc8540_decode,ppc8540_issue+ppc8540_lsu,nothing,ppc8540_retire")