1 ;; Pipeline description for Motorola PowerPC e300c3 core.
2 ;; Copyright (C) 2008-2017 Free Software Foundation, Inc.
3 ;; Contributed by Edmar Wienskoski (edmar@freescale.com)
5 ;; This file is part of GCC.
7 ;; GCC is free software; you can redistribute it and/or modify it
8 ;; under the terms of the GNU General Public License as published
9 ;; by the Free Software Foundation; either version 3, or (at your
10 ;; option) any later version.
12 ;; GCC is distributed in the hope that it will be useful, but WITHOUT
13 ;; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14 ;; or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
15 ;; License for more details.
17 ;; You should have received a copy of the GNU General Public License
18 ;; along with GCC; see the file COPYING3. If not see
19 ;; <http://www.gnu.org/licenses/>.
21 (define_automaton "ppce300c3_most,ppce300c3_long,ppce300c3_retire")
22 (define_cpu_unit "ppce300c3_decode_0,ppce300c3_decode_1" "ppce300c3_most")
24 ;; We don't simulate general issue queue (GIC). If we have SU insn
25 ;; and then SU1 insn, they can not be issued on the same cycle
26 ;; (although SU1 insn and then SU insn can be issued) because the SU
27 ;; insn will go to SU1 from GIC0 entry. Fortunately, the first cycle
28 ;; multipass insn scheduling will find the situation and issue the SU1
29 ;; insn and then the SU insn.
30 (define_cpu_unit "ppce300c3_issue_0,ppce300c3_issue_1" "ppce300c3_most")
32 ;; We could describe completion buffers slots in combination with the
33 ;; retirement units and the order of completion but the result
34 ;; automaton would behave in the same way because we can not describe
35 ;; real latency time with taking in order completion into account.
36 ;; Actually we could define the real latency time by querying reserved
37 ;; automaton units but the current scheduler uses latency time before
38 ;; issuing insns and making any reservations.
40 ;; So our description is aimed to achieve a insn schedule in which the
41 ;; insns would not wait in the completion buffer.
42 (define_cpu_unit "ppce300c3_retire_0,ppce300c3_retire_1" "ppce300c3_retire")
45 (define_cpu_unit "ppce300c3_bu" "ppce300c3_most")
48 (define_cpu_unit "ppce300c3_iu0_stage0,ppce300c3_iu1_stage0" "ppce300c3_most")
50 ;; IU: This used to describe non-pipelined division.
51 (define_cpu_unit "ppce300c3_mu_div" "ppce300c3_long")
54 (define_cpu_unit "ppce300c3_sru_stage0" "ppce300c3_most")
56 ;; Here we simplified LSU unit description not describing the stages.
57 (define_cpu_unit "ppce300c3_lsu" "ppce300c3_most")
60 (define_cpu_unit "ppce300c3_fpu" "ppce300c3_most")
62 ;; The following units are used to make automata deterministic
63 (define_cpu_unit "present_ppce300c3_decode_0" "ppce300c3_most")
64 (define_cpu_unit "present_ppce300c3_issue_0" "ppce300c3_most")
65 (define_cpu_unit "present_ppce300c3_retire_0" "ppce300c3_retire")
66 (define_cpu_unit "present_ppce300c3_iu0_stage0" "ppce300c3_most")
68 ;; The following sets to make automata deterministic when option ndfa is used.
69 (presence_set "present_ppce300c3_decode_0" "ppce300c3_decode_0")
70 (presence_set "present_ppce300c3_issue_0" "ppce300c3_issue_0")
71 (presence_set "present_ppce300c3_retire_0" "ppce300c3_retire_0")
72 (presence_set "present_ppce300c3_iu0_stage0" "ppce300c3_iu0_stage0")
74 ;; Some useful abbreviations.
75 (define_reservation "ppce300c3_decode"
76 "ppce300c3_decode_0|ppce300c3_decode_1+present_ppce300c3_decode_0")
77 (define_reservation "ppce300c3_issue"
78 "ppce300c3_issue_0|ppce300c3_issue_1+present_ppce300c3_issue_0")
79 (define_reservation "ppce300c3_retire"
80 "ppce300c3_retire_0|ppce300c3_retire_1+present_ppce300c3_retire_0")
81 (define_reservation "ppce300c3_iu_stage0"
82 "ppce300c3_iu0_stage0|ppce300c3_iu1_stage0+present_ppce300c3_iu0_stage0")
84 ;; Compares can be executed either one of the IU or SRU
85 (define_insn_reservation "ppce300c3_cmp" 1
86 (and (ior (eq_attr "type" "cmp")
87 (and (eq_attr "type" "add,logical,shift,exts")
88 (eq_attr "dot" "yes")))
89 (ior (eq_attr "cpu" "ppce300c2") (eq_attr "cpu" "ppce300c3")))
90 "ppce300c3_decode,ppce300c3_issue+(ppce300c3_iu_stage0|ppce300c3_sru_stage0) \
93 ;; Other one cycle IU insns
94 (define_insn_reservation "ppce300c3_iu" 1
95 (and (ior (eq_attr "type" "integer,insert,isel")
96 (and (eq_attr "type" "add,logical,shift,exts")
97 (eq_attr "dot" "no")))
98 (ior (eq_attr "cpu" "ppce300c2") (eq_attr "cpu" "ppce300c3")))
99 "ppce300c3_decode,ppce300c3_issue+ppce300c3_iu_stage0+ppce300c3_retire")
101 ;; Branch. Actually this latency time is not used by the scheduler.
102 (define_insn_reservation "ppce300c3_branch" 1
103 (and (eq_attr "type" "jmpreg,branch")
104 (ior (eq_attr "cpu" "ppce300c2") (eq_attr "cpu" "ppce300c3")))
105 "ppce300c3_decode,ppce300c3_bu,ppce300c3_retire")
107 ;; Multiply is non-pipelined but can be executed in any IU
108 (define_insn_reservation "ppce300c3_multiply" 2
109 (and (eq_attr "type" "mul")
110 (ior (eq_attr "cpu" "ppce300c2") (eq_attr "cpu" "ppce300c3")))
111 "ppce300c3_decode,ppce300c3_issue+ppce300c3_iu_stage0, \
112 ppce300c3_iu_stage0+ppce300c3_retire")
114 ;; Divide. We use the average latency time here. We omit reserving a
115 ;; retire unit because of the result automata will be huge.
116 (define_insn_reservation "ppce300c3_divide" 20
117 (and (eq_attr "type" "div")
118 (ior (eq_attr "cpu" "ppce300c2") (eq_attr "cpu" "ppce300c3")))
119 "ppce300c3_decode,ppce300c3_issue+ppce300c3_iu_stage0+ppce300c3_mu_div,\
120 ppce300c3_mu_div*19")
123 (define_insn_reservation "ppce300c3_cr_logical" 1
124 (and (eq_attr "type" "cr_logical,delayed_cr")
125 (ior (eq_attr "cpu" "ppce300c2") (eq_attr "cpu" "ppce300c3")))
126 "ppce300c3_decode,ppce300c3_issue+ppce300c3_sru_stage0+ppce300c3_retire")
129 (define_insn_reservation "ppce300c3_mfcr" 1
130 (and (eq_attr "type" "mfcr")
131 (ior (eq_attr "cpu" "ppce300c2") (eq_attr "cpu" "ppce300c3")))
132 "ppce300c3_decode,ppce300c3_issue+ppce300c3_sru_stage0+ppce300c3_retire")
135 (define_insn_reservation "ppce300c3_mtcrf" 1
136 (and (eq_attr "type" "mtcr")
137 (ior (eq_attr "cpu" "ppce300c2") (eq_attr "cpu" "ppce300c3")))
138 "ppce300c3_decode,ppce300c3_issue+ppce300c3_sru_stage0+ppce300c3_retire")
141 (define_insn_reservation "ppce300c3_mtjmpr" 1
142 (and (eq_attr "type" "mtjmpr,mfjmpr")
143 (ior (eq_attr "cpu" "ppce300c2") (eq_attr "cpu" "ppce300c3")))
144 "ppce300c3_decode,ppce300c3_issue+ppce300c3_sru_stage0+ppce300c3_retire")
146 ;; Float point instructions
147 (define_insn_reservation "ppce300c3_fpcompare" 3
148 (and (eq_attr "type" "fpcompare")
149 (eq_attr "cpu" "ppce300c3"))
150 "ppce300c3_decode,ppce300c3_issue+ppce300c3_fpu,nothing,ppce300c3_retire")
152 (define_insn_reservation "ppce300c3_fp" 3
153 (and (eq_attr "type" "fp,fpsimple")
154 (eq_attr "cpu" "ppce300c3"))
155 "ppce300c3_decode,ppce300c3_issue+ppce300c3_fpu,nothing,ppce300c3_retire")
157 (define_insn_reservation "ppce300c3_dmul" 4
158 (and (eq_attr "type" "dmul")
159 (eq_attr "cpu" "ppce300c3"))
160 "ppce300c3_decode,ppce300c3_issue+ppce300c3_fpu,ppce300c3_fpu,nothing,ppce300c3_retire")
162 ; Divides are not pipelined
163 (define_insn_reservation "ppce300c3_sdiv" 18
164 (and (eq_attr "type" "sdiv")
165 (eq_attr "cpu" "ppce300c3"))
166 "ppce300c3_decode,ppce300c3_issue+ppce300c3_fpu,ppce300c3_fpu*17")
168 (define_insn_reservation "ppce300c3_ddiv" 33
169 (and (eq_attr "type" "ddiv")
170 (eq_attr "cpu" "ppce300c3"))
171 "ppce300c3_decode,ppce300c3_issue+ppce300c3_fpu,ppce300c3_fpu*32")
174 (define_insn_reservation "ppce300c3_load" 2
175 (and (eq_attr "type" "load")
176 (ior (eq_attr "cpu" "ppce300c2") (eq_attr "cpu" "ppce300c3")))
177 "ppce300c3_decode,ppce300c3_issue+ppce300c3_lsu,ppce300c3_retire")
179 (define_insn_reservation "ppce300c3_fpload" 2
180 (and (eq_attr "type" "fpload")
181 (eq_attr "cpu" "ppce300c3"))
182 "ppce300c3_decode,ppce300c3_issue+ppce300c3_lsu,ppce300c3_retire")
185 (define_insn_reservation "ppce300c3_store" 2
186 (and (eq_attr "type" "store")
187 (ior (eq_attr "cpu" "ppce300c2") (eq_attr "cpu" "ppce300c3")))
188 "ppce300c3_decode,ppce300c3_issue+ppce300c3_lsu,ppce300c3_retire")
190 (define_insn_reservation "ppce300c3_fpstore" 2
191 (and (eq_attr "type" "fpstore")
192 (eq_attr "cpu" "ppce300c3"))
193 "ppce300c3_decode,ppce300c3_issue+ppce300c3_lsu,ppce300c3_retire")