1 ;; Scheduling description for IBM POWER8 processor.
2 ;; Copyright (C) 2013-2017 Free Software Foundation, Inc.
4 ;; Contributed by Pat Haugen (pthaugen@us.ibm.com).
6 ;; This file is part of GCC.
8 ;; GCC is free software; you can redistribute it and/or modify it
9 ;; under the terms of the GNU General Public License as published
10 ;; by the Free Software Foundation; either version 3, or (at your
11 ;; option) any later version.
13 ;; GCC is distributed in the hope that it will be useful, but WITHOUT
14 ;; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
15 ;; or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
16 ;; License for more details.
18 ;; You should have received a copy of the GNU General Public License
19 ;; along with GCC; see the file COPYING3. If not see
20 ;; <http://www.gnu.org/licenses/>.
22 (define_automaton "power8fxu,power8lsu,power8vsu,power8misc")
24 (define_cpu_unit "fxu0_power8,fxu1_power8" "power8fxu")
25 (define_cpu_unit "lu0_power8,lu1_power8" "power8lsu")
26 (define_cpu_unit "lsu0_power8,lsu1_power8" "power8lsu")
27 (define_cpu_unit "vsu0_power8,vsu1_power8" "power8vsu")
28 (define_cpu_unit "bpu_power8,cru_power8" "power8misc")
29 (define_cpu_unit "du0_power8,du1_power8,du2_power8,du3_power8,du4_power8,\
30 du5_power8,du6_power8" "power8misc")
33 ; Dispatch group reservations
34 (define_reservation "DU_any_power8"
35 "du0_power8|du1_power8|du2_power8|du3_power8|du4_power8|\
38 ; 2-way Cracked instructions go in slots 0-1
39 ; (can also have a second in slots 3-4 if insns are adjacent)
40 (define_reservation "DU_cracked_power8"
41 "du0_power8+du1_power8")
43 ; Insns that are first in group
44 (define_reservation "DU_first_power8"
47 ; Insns that are first and last in group
48 (define_reservation "DU_both_power8"
49 "du0_power8+du1_power8+du2_power8+du3_power8+du4_power8+\
50 du5_power8+du6_power8")
52 ; Dispatch slots are allocated in order conforming to program order.
53 (absence_set "du0_power8" "du1_power8,du2_power8,du3_power8,du4_power8,\
54 du5_power8,du6_power8")
55 (absence_set "du1_power8" "du2_power8,du3_power8,du4_power8,du5_power8,\
57 (absence_set "du2_power8" "du3_power8,du4_power8,du5_power8,du6_power8")
58 (absence_set "du3_power8" "du4_power8,du5_power8,du6_power8")
59 (absence_set "du4_power8" "du5_power8,du6_power8")
60 (absence_set "du5_power8" "du6_power8")
63 ; Execution unit reservations
64 (define_reservation "FXU_power8"
65 "fxu0_power8|fxu1_power8")
67 (define_reservation "LU_power8"
68 "lu0_power8|lu1_power8")
70 (define_reservation "LSU_power8"
71 "lsu0_power8|lsu1_power8")
73 (define_reservation "LU_or_LSU_power8"
74 "lu0_power8|lu1_power8|lsu0_power8|lsu1_power8")
76 (define_reservation "VSU_power8"
77 "vsu0_power8|vsu1_power8")
81 (define_insn_reservation "power8-load" 3
82 (and (eq_attr "type" "load")
83 (eq_attr "sign_extend" "no")
84 (eq_attr "update" "no")
85 (eq_attr "cpu" "power8"))
86 "DU_any_power8,LU_or_LSU_power8")
88 (define_insn_reservation "power8-load-update" 3
89 (and (eq_attr "type" "load")
90 (eq_attr "sign_extend" "no")
91 (eq_attr "update" "yes")
92 (eq_attr "cpu" "power8"))
93 "DU_cracked_power8,LU_or_LSU_power8+FXU_power8")
95 (define_insn_reservation "power8-load-ext" 3
96 (and (eq_attr "type" "load")
97 (eq_attr "sign_extend" "yes")
98 (eq_attr "update" "no")
99 (eq_attr "cpu" "power8"))
100 "DU_cracked_power8,LU_or_LSU_power8,FXU_power8")
102 (define_insn_reservation "power8-load-ext-update" 3
103 (and (eq_attr "type" "load")
104 (eq_attr "sign_extend" "yes")
105 (eq_attr "update" "yes")
106 (eq_attr "cpu" "power8"))
107 "DU_both_power8,LU_or_LSU_power8+FXU_power8,FXU_power8")
109 (define_insn_reservation "power8-fpload" 5
110 (and (ior (eq_attr "type" "vecload")
111 (and (eq_attr "type" "fpload")
112 (eq_attr "update" "no")))
113 (eq_attr "cpu" "power8"))
114 "DU_any_power8,LU_power8")
116 (define_insn_reservation "power8-fpload-update" 5
117 (and (eq_attr "type" "fpload")
118 (eq_attr "update" "yes")
119 (eq_attr "cpu" "power8"))
120 "DU_cracked_power8,LU_power8+FXU_power8")
122 (define_insn_reservation "power8-store" 5 ; store-forwarding latency
123 (and (eq_attr "type" "store")
124 (not (and (eq_attr "update" "yes")
125 (eq_attr "indexed" "yes")))
126 (eq_attr "cpu" "power8"))
127 "DU_any_power8,LSU_power8+LU_power8")
129 (define_insn_reservation "power8-store-update-indexed" 5
130 (and (eq_attr "type" "store")
131 (eq_attr "update" "yes")
132 (eq_attr "indexed" "yes")
133 (eq_attr "cpu" "power8"))
134 "DU_cracked_power8,LSU_power8+LU_power8")
136 (define_insn_reservation "power8-fpstore" 5
137 (and (eq_attr "type" "fpstore")
138 (eq_attr "update" "no")
139 (eq_attr "cpu" "power8"))
140 "DU_any_power8,LSU_power8+VSU_power8")
142 (define_insn_reservation "power8-fpstore-update" 5
143 (and (eq_attr "type" "fpstore")
144 (eq_attr "update" "yes")
145 (eq_attr "cpu" "power8"))
146 "DU_any_power8,LSU_power8+VSU_power8")
148 (define_insn_reservation "power8-vecstore" 5
149 (and (eq_attr "type" "vecstore")
150 (eq_attr "cpu" "power8"))
151 "DU_cracked_power8,LSU_power8+VSU_power8")
153 (define_insn_reservation "power8-larx" 3
154 (and (eq_attr "type" "load_l")
155 (eq_attr "cpu" "power8"))
156 "DU_both_power8,LU_or_LSU_power8")
158 (define_insn_reservation "power8-stcx" 10
159 (and (eq_attr "type" "store_c")
160 (eq_attr "cpu" "power8"))
161 "DU_both_power8,LSU_power8+LU_power8")
163 (define_insn_reservation "power8-sync" 1
164 (and (eq_attr "type" "sync,isync")
165 (eq_attr "cpu" "power8"))
166 "DU_both_power8,LSU_power8")
170 (define_insn_reservation "power8-1cyc" 1
171 (and (ior (eq_attr "type" "integer,insert,trap,isel")
172 (and (eq_attr "type" "add,logical,shift,exts")
173 (eq_attr "dot" "no")))
174 (eq_attr "cpu" "power8"))
175 "DU_any_power8,FXU_power8")
177 ; Extra cycle to LU/LSU
178 (define_bypass 2 "power8-1cyc"
179 "power8-load*,power8-fpload*,power8-store*,power8-fpstore*,\
180 power8-vecstore,power8-larx,power8-stcx")
181 ; "power8-load,power8-load-update,power8-load-ext,\
182 ; power8-load-ext-update,power8-fpload,power8-fpload-update,\
183 ; power8-store,power8-store-update,power8-store-update-indexed,\
184 ; power8-fpstore,power8-fpstore-update,power8-vecstore,\
185 ; power8-larx,power8-stcx")
187 (define_insn_reservation "power8-2cyc" 2
188 (and (eq_attr "type" "cntlz,popcnt")
189 (eq_attr "cpu" "power8"))
190 "DU_any_power8,FXU_power8")
192 (define_insn_reservation "power8-two" 2
193 (and (eq_attr "type" "two")
194 (eq_attr "cpu" "power8"))
195 "DU_any_power8+DU_any_power8,FXU_power8,FXU_power8")
197 (define_insn_reservation "power8-three" 3
198 (and (eq_attr "type" "three")
199 (eq_attr "cpu" "power8"))
200 "DU_any_power8+DU_any_power8+DU_any_power8,FXU_power8,FXU_power8,FXU_power8")
202 ; cmp - Normal compare insns
203 (define_insn_reservation "power8-cmp" 2
204 (and (eq_attr "type" "cmp")
205 (eq_attr "cpu" "power8"))
206 "DU_any_power8,FXU_power8")
208 ; add/logical with dot : add./and./nor./etc
209 (define_insn_reservation "power8-fast-compare" 2
210 (and (eq_attr "type" "add,logical")
211 (eq_attr "dot" "yes")
212 (eq_attr "cpu" "power8"))
213 "DU_any_power8,FXU_power8")
215 ; exts/shift with dot : rldicl./exts./rlwinm./slwi./rlwnm./slw./etc
216 (define_insn_reservation "power8-compare" 2
217 (and (eq_attr "type" "shift,exts")
218 (eq_attr "dot" "yes")
219 (eq_attr "cpu" "power8"))
220 "DU_cracked_power8,FXU_power8,FXU_power8")
222 ; Extra cycle to LU/LSU
223 (define_bypass 3 "power8-fast-compare,power8-compare"
224 "power8-load*,power8-fpload*,power8-store*,power8-fpstore*,\
225 power8-vecstore,power8-larx,power8-stcx")
228 (define_bypass 5 "power8-fast-compare,power8-compare"
229 "power8-crlogical,power8-mfcr,power8-mfcrf,power8-branch")
231 (define_insn_reservation "power8-mul" 4
232 (and (eq_attr "type" "mul")
234 (eq_attr "cpu" "power8"))
235 "DU_any_power8,FXU_power8")
237 (define_insn_reservation "power8-mul-compare" 4
238 (and (eq_attr "type" "mul")
239 (eq_attr "dot" "yes")
240 (eq_attr "cpu" "power8"))
241 "DU_cracked_power8,FXU_power8")
243 ; Extra cycle to LU/LSU
244 (define_bypass 5 "power8-mul,power8-mul-compare"
245 "power8-load*,power8-fpload*,power8-store*,power8-fpstore*,\
246 power8-vecstore,power8-larx,power8-stcx")
249 (define_bypass 7 "power8-mul,power8-mul-compare"
250 "power8-crlogical,power8-mfcr,power8-mfcrf,power8-branch")
252 ; FXU divides are not pipelined
253 (define_insn_reservation "power8-idiv" 37
254 (and (eq_attr "type" "div")
255 (eq_attr "size" "32")
256 (eq_attr "cpu" "power8"))
257 "DU_any_power8,fxu0_power8*37|fxu1_power8*37")
259 (define_insn_reservation "power8-ldiv" 68
260 (and (eq_attr "type" "div")
261 (eq_attr "size" "64")
262 (eq_attr "cpu" "power8"))
263 "DU_any_power8,fxu0_power8*68|fxu1_power8*68")
265 (define_insn_reservation "power8-mtjmpr" 5
266 (and (eq_attr "type" "mtjmpr")
267 (eq_attr "cpu" "power8"))
268 "DU_first_power8,FXU_power8")
270 ; Should differentiate between 1 cr field and > 1 since mtocrf is not microcode
271 (define_insn_reservation "power8-mtcr" 3
272 (and (eq_attr "type" "mtcr")
273 (eq_attr "cpu" "power8"))
274 "DU_both_power8,FXU_power8")
278 (define_insn_reservation "power8-mfjmpr" 5
279 (and (eq_attr "type" "mfjmpr")
280 (eq_attr "cpu" "power8"))
281 "DU_first_power8,cru_power8+FXU_power8")
283 (define_insn_reservation "power8-crlogical" 3
284 (and (eq_attr "type" "cr_logical,delayed_cr")
285 (eq_attr "cpu" "power8"))
286 "DU_first_power8,cru_power8")
288 (define_insn_reservation "power8-mfcr" 5
289 (and (eq_attr "type" "mfcr")
290 (eq_attr "cpu" "power8"))
291 "DU_both_power8,cru_power8")
293 (define_insn_reservation "power8-mfcrf" 3
294 (and (eq_attr "type" "mfcrf")
295 (eq_attr "cpu" "power8"))
296 "DU_first_power8,cru_power8")
300 ; Branches take dispatch slot 7, but reserve any remaining prior slots to
301 ; prevent other insns from grabbing them once this is assigned.
302 (define_insn_reservation "power8-branch" 3
303 (and (eq_attr "type" "jmpreg,branch")
304 (eq_attr "cpu" "power8"))
306 |du5_power8+du6_power8\
307 |du4_power8+du5_power8+du6_power8\
308 |du3_power8+du4_power8+du5_power8+du6_power8\
309 |du2_power8+du3_power8+du4_power8+du5_power8+du6_power8\
310 |du1_power8+du2_power8+du3_power8+du4_power8+du5_power8+du6_power8\
311 |du0_power8+du1_power8+du2_power8+du3_power8+du4_power8+du5_power8+\
312 du6_power8),bpu_power8")
314 ; Branch updating LR/CTR feeding mf[lr|ctr]
315 (define_bypass 4 "power8-branch" "power8-mfjmpr")
318 ; VS Unit (includes FP/VSX/VMX/DFP/Crypto)
319 (define_insn_reservation "power8-fp" 6
320 (and (eq_attr "type" "fp,fpsimple,dmul,dfp")
321 (eq_attr "cpu" "power8"))
322 "DU_any_power8,VSU_power8")
324 ; Additional 3 cycles for any CR result
325 (define_bypass 9 "power8-fp" "power8-crlogical,power8-mfcr*,power8-branch")
327 (define_insn_reservation "power8-fpcompare" 8
328 (and (eq_attr "type" "fpcompare")
329 (eq_attr "cpu" "power8"))
330 "DU_any_power8,VSU_power8")
332 (define_insn_reservation "power8-sdiv" 27
333 (and (eq_attr "type" "sdiv")
334 (eq_attr "cpu" "power8"))
335 "DU_any_power8,VSU_power8")
337 (define_insn_reservation "power8-ddiv" 33
338 (and (eq_attr "type" "ddiv")
339 (eq_attr "cpu" "power8"))
340 "DU_any_power8,VSU_power8")
342 (define_insn_reservation "power8-sqrt" 32
343 (and (eq_attr "type" "ssqrt")
344 (eq_attr "cpu" "power8"))
345 "DU_any_power8,VSU_power8")
347 (define_insn_reservation "power8-dsqrt" 44
348 (and (eq_attr "type" "dsqrt")
349 (eq_attr "cpu" "power8"))
350 "DU_any_power8,VSU_power8")
352 (define_insn_reservation "power8-vecsimple" 2
353 (and (eq_attr "type" "vecperm,vecsimple,veclogical,vecmove,veccmp,
355 (eq_attr "cpu" "power8"))
356 "DU_any_power8,VSU_power8")
358 (define_insn_reservation "power8-vecnormal" 6
359 (and (eq_attr "type" "vecfloat,vecdouble")
360 (eq_attr "cpu" "power8"))
361 "DU_any_power8,VSU_power8")
363 (define_bypass 7 "power8-vecnormal"
364 "power8-vecsimple,power8-veccomplex,power8-fpstore*,\
367 (define_insn_reservation "power8-veccomplex" 7
368 (and (eq_attr "type" "veccomplex")
369 (eq_attr "cpu" "power8"))
370 "DU_any_power8,VSU_power8")
372 (define_insn_reservation "power8-vecfdiv" 25
373 (and (eq_attr "type" "vecfdiv")
374 (eq_attr "cpu" "power8"))
375 "DU_any_power8,VSU_power8")
377 (define_insn_reservation "power8-vecdiv" 31
378 (and (eq_attr "type" "vecdiv")
379 (eq_attr "cpu" "power8"))
380 "DU_any_power8,VSU_power8")
382 (define_insn_reservation "power8-mffgpr" 5
383 (and (eq_attr "type" "mffgpr")
384 (eq_attr "cpu" "power8"))
385 "DU_any_power8,VSU_power8")
387 (define_insn_reservation "power8-mftgpr" 6
388 (and (eq_attr "type" "mftgpr")
389 (eq_attr "cpu" "power8"))
390 "DU_any_power8,VSU_power8")
392 (define_insn_reservation "power8-crypto" 7
393 (and (eq_attr "type" "crypto")
394 (eq_attr "cpu" "power8"))
395 "DU_any_power8,VSU_power8")