1 ;; Octeon pipeline description.
2 ;; Copyright (C) 2008-2024 Free Software Foundation, Inc.
4 ;; This file is part of GCC.
6 ;; GCC is free software; you can redistribute it and/or modify
7 ;; it under the terms of the GNU General Public License as published by
8 ;; the Free Software Foundation; either version 3, or (at your option)
11 ;; GCC is distributed in the hope that it will be useful,
12 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
13 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 ;; GNU General Public 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/>.
19 ;; Copyright (C) 2004, 2005, 2006 Cavium Networks.
22 ;; Octeon is a dual-issue processor that can issue all instructions on
23 ;; pipe0 and a subset on pipe1.
25 (define_automaton "octeon_main, octeon_mult, octeon_fpu")
27 (define_cpu_unit "octeon_pipe0" "octeon_main")
28 (define_cpu_unit "octeon_pipe1" "octeon_main")
29 (define_cpu_unit "octeon_mult" "octeon_mult")
30 (define_cpu_unit "octeon_fpu" "octeon_fpu")
32 (define_insn_reservation "octeon_arith" 1
33 (and (eq_attr "cpu" "octeon,octeon2,octeon3")
34 (eq_attr "type" "arith,const,logical,move,shift,signext,slt,nop"))
35 "octeon_pipe0 | octeon_pipe1")
37 (define_insn_reservation "octeon_condmove_o1" 2
38 (and (eq_attr "cpu" "octeon")
39 (eq_attr "type" "condmove"))
40 "octeon_pipe0 | octeon_pipe1")
42 (define_insn_reservation "octeon_condmove_o2" 3
43 (and (eq_attr "cpu" "octeon2,octeon3")
44 (eq_attr "type" "condmove")
45 (not (eq_attr "mode" "SF, DF")))
46 "octeon_pipe0 | octeon_pipe1")
48 ;; movt/movf can only issue in pipe1
49 (define_insn_reservation "octeon_condmove_o3_int_on_cc" 3
50 (and (eq_attr "cpu" "octeon2,octeon3")
51 (eq_attr "type" "condmove")
52 (not (eq_attr "mode" "SF, DF")))
55 (define_insn_reservation "octeon_load_o1" 2
56 (and (eq_attr "cpu" "octeon")
57 (eq_attr "type" "load,prefetch,mtc,mfc"))
60 (define_insn_reservation "octeon_load_o2" 3
61 (and (eq_attr "cpu" "octeon2,octeon3")
62 (eq_attr "type" "load,prefetch"))
65 ;; ??? memory-related cop0 reads are pipe0 with 3-cycle latency.
66 ;; Front-end-related ones are 1-cycle on pipe1. Assume front-end for now.
67 (define_insn_reservation "octeon_cop_o2" 1
68 (and (eq_attr "cpu" "octeon2,octeon3")
69 (eq_attr "type" "mtc,mfc"))
72 (define_insn_reservation "octeon_store" 1
73 (and (eq_attr "cpu" "octeon,octeon2,octeon3")
74 (eq_attr "type" "store"))
77 (define_insn_reservation "octeon_brj_o1" 1
78 (and (eq_attr "cpu" "octeon")
79 (eq_attr "type" "branch,jump,call,trap"))
82 (define_insn_reservation "octeon_brj_o2" 2
83 (and (eq_attr "cpu" "octeon2,octeon3")
84 (eq_attr "type" "branch,jump,call,trap"))
87 (define_insn_reservation "octeon_imul3_o1" 5
88 (and (eq_attr "cpu" "octeon")
89 (eq_attr "type" "imul3,pop,clz"))
90 "(octeon_pipe0 | octeon_pipe1) + octeon_mult")
92 (define_insn_reservation "octeon_imul3_o2" 6
93 (and (eq_attr "cpu" "octeon2,octeon3")
94 (eq_attr "type" "imul3,pop,clz"))
95 "octeon_pipe1 + octeon_mult")
97 (define_insn_reservation "octeon_imul_o1" 2
98 (and (eq_attr "cpu" "octeon")
99 (eq_attr "type" "imul,mthi,mtlo"))
100 "(octeon_pipe0 | octeon_pipe1) + octeon_mult, octeon_mult")
102 (define_insn_reservation "octeon_imul_o2" 1
103 (and (eq_attr "cpu" "octeon2,octeon3")
104 (eq_attr "type" "imul,mthi,mtlo"))
105 "octeon_pipe1 + octeon_mult")
107 (define_insn_reservation "octeon_mfhilo_o1" 5
108 (and (eq_attr "cpu" "octeon")
109 (eq_attr "type" "mfhi,mflo"))
110 "(octeon_pipe0 | octeon_pipe1) + octeon_mult")
112 (define_insn_reservation "octeon_mfhilo_o2" 6
113 (and (eq_attr "cpu" "octeon2,octeon3")
114 (eq_attr "type" "mfhi,mflo"))
115 "octeon_pipe1 + octeon_mult")
117 (define_insn_reservation "octeon_imadd_o1" 4
118 (and (eq_attr "cpu" "octeon")
119 (eq_attr "type" "imadd"))
120 "(octeon_pipe0 | octeon_pipe1) + octeon_mult, octeon_mult*3")
122 (define_insn_reservation "octeon_imadd_o2" 1
123 (and (eq_attr "cpu" "octeon2,octeon3")
124 (eq_attr "type" "imadd"))
125 "octeon_pipe1 + octeon_mult")
127 (define_insn_reservation "octeon_idiv_o1" 72
128 (and (eq_attr "cpu" "octeon")
129 (eq_attr "type" "idiv"))
130 "(octeon_pipe0 | octeon_pipe1) + octeon_mult, octeon_mult*71")
132 (define_insn_reservation "octeon_idiv_o2_si" 18
133 (and (eq_attr "cpu" "octeon2,octeon3")
134 (eq_attr "mode" "SI")
135 (eq_attr "type" "idiv"))
136 "octeon_pipe1 + octeon_mult, octeon_mult*17")
138 (define_insn_reservation "octeon_idiv_o2_di" 35
139 (and (eq_attr "cpu" "octeon2,octeon3")
140 (eq_attr "mode" "DI")
141 (eq_attr "type" "idiv"))
142 "octeon_pipe1 + octeon_mult, octeon_mult*34")
144 ;; Assume both pipes are needed for unknown and multiple-instruction
147 (define_insn_reservation "octeon_unknown" 1
148 (and (eq_attr "cpu" "octeon,octeon2,octeon3")
149 (eq_attr "type" "unknown,multi,atomic,syncloop"))
150 "octeon_pipe0 + octeon_pipe1")
154 (define_insn_reservation "octeon3_faddsubcvt" 4
155 (and (eq_attr "cpu" "octeon3")
156 (eq_attr "type" "fadd, fcvt"))
157 "octeon_pipe1 + octeon_fpu")
159 (define_insn_reservation "octeon3_fmul" 5
160 (and (eq_attr "cpu" "octeon3")
161 (eq_attr "type" "fmul"))
162 "octeon_pipe1 + octeon_fpu")
164 (define_insn_reservation "octeon3_fmadd" 9
165 (and (eq_attr "cpu" "octeon3")
166 (eq_attr "type" "fmadd"))
167 "octeon_pipe1 + octeon_fpu, octeon_fpu")
169 (define_insn_reservation "octeon3_div_sf" 12
170 (and (eq_attr "cpu" "octeon3")
171 (eq_attr "type" "fdiv, frdiv")
172 (eq_attr "mode" "SF"))
173 "octeon_pipe1 + octeon_fpu, octeon_fpu*8")
175 (define_insn_reservation "octeon3_div_df" 22
176 (and (eq_attr "cpu" "octeon3")
177 (eq_attr "type" "fdiv, frdiv")
178 (eq_attr "mode" "SF"))
179 "octeon_pipe1 + octeon_fpu, octeon_fpu*18")
181 (define_insn_reservation "octeon3_sqrt_sf" 16
182 (and (eq_attr "cpu" "octeon3")
183 (eq_attr "type" "fsqrt")
184 (eq_attr "mode" "SF"))
185 "octeon_pipe1 + octeon_fpu, octeon_fpu*12")
187 (define_insn_reservation "octeon3_sqrt_df" 30
188 (and (eq_attr "cpu" "octeon3")
189 (eq_attr "type" "fsqrt")
190 (eq_attr "mode" "DF"))
191 "octeon_pipe1 + octeon_fpu, octeon_fpu*26")
193 (define_insn_reservation "octeon3_rsqrt_sf" 27
194 (and (eq_attr "cpu" "octeon3")
195 (eq_attr "type" "frsqrt")
196 (eq_attr "mode" "SF"))
197 "octeon_pipe1 + octeon_fpu, octeon_fpu*23")
199 (define_insn_reservation "octeon3_rsqrt_df" 51
200 (and (eq_attr "cpu" "octeon3")
201 (eq_attr "type" "frsqrt")
202 (eq_attr "mode" "DF"))
203 "octeon_pipe1 + octeon_fpu, octeon_fpu*47")
205 (define_insn_reservation "octeon3_fabsnegmov" 2
206 (and (eq_attr "cpu" "octeon3")
207 (eq_attr "type" "fabs, fneg, fmove"))
208 "octeon_pipe1 + octeon_fpu")
210 (define_insn_reservation "octeon_fcond" 1
211 (and (eq_attr "cpu" "octeon3")
212 (eq_attr "type" "fcmp"))
213 "octeon_pipe1 + octeon_fpu")
215 (define_insn_reservation "octeon_fcondmov" 2
216 (and (eq_attr "cpu" "octeon3")
217 (eq_attr "type" "condmove")
218 (eq_attr "mode" "SF,DF"))
219 "octeon_pipe1 + octeon_fpu")
221 (define_insn_reservation "octeon_fpmtc1" 2
222 (and (eq_attr "cpu" "octeon3")
223 (eq_attr "type" "mtc"))
224 "octeon_pipe1 + octeon_fpu")
226 (define_insn_reservation "octeon_fpmfc1" 6
227 (and (eq_attr "cpu" "octeon3")
228 (eq_attr "type" "mtc"))
229 "octeon_pipe1 + octeon_fpu")
231 (define_insn_reservation "octeon_fpload" 3
232 (and (eq_attr "cpu" "octeon3")
233 (eq_attr "type" "fpload,fpidxload"))
234 "octeon_pipe0 + octeon_fpu")
236 (define_insn_reservation "octeon_fpstore" 3
237 (and (eq_attr "cpu" "octeon3")
238 (eq_attr "type" "fpstore,fpidxstore"))
239 "octeon_pipe0 + octeon_pipe1")