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[/] [openrisc/] [trunk/] [gnu-old/] [gcc-4.2.2/] [gcc/] [config/] [rs6000/] [power5.md] - Blame information for rev 858

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;; Scheduling description for IBM POWER5 processor.
2 
;;   Copyright (C) 2003, 2004, 2007 Free Software Foundation, Inc.
3 
;;
4 
;; This file is part of GCC.
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;;
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
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;; by the Free Software Foundation; either version 3, or (at your
9 
;; option) any later version.
10 
;;
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
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;; License for more details.
15 
;;
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 
;; .
19 
 
20 
;; Sources: IBM Red Book and White Paper on POWER5
21 
 
22 
;; The POWER5 has 2 iu, 2 fpu, 2 lsu per engine (2 engines per chip).
23 
;; Instructions that update more than one register get broken into two
24 
;; (split) or more internal ops.  The chip can issue up to 5
25 
;; internal ops per cycle.
26 
 
27 
(define_automaton "power5iu,power5fpu,power5misc")
28 
 
29 
(define_cpu_unit "iu1_power5,iu2_power5" "power5iu")
30 
(define_cpu_unit "lsu1_power5,lsu2_power5" "power5misc")
31 
(define_cpu_unit "fpu1_power5,fpu2_power5" "power5fpu")
32 
(define_cpu_unit "bpu_power5,cru_power5" "power5misc")
33 
(define_cpu_unit "du1_power5,du2_power5,du3_power5,du4_power5,du5_power5"
34 
                 "power5misc")
35 
 
36 
(define_reservation "lsq_power5"
37 
                    "(du1_power5,lsu1_power5)\
38 
                    |(du2_power5,lsu2_power5)\
39 
                    |(du3_power5,lsu2_power5)\
40 
                    |(du4_power5,lsu1_power5)")
41 
 
42 
(define_reservation "iq_power5"
43 
                    "(du1_power5,iu1_power5)\
44 
                    |(du2_power5,iu2_power5)\
45 
                    |(du3_power5,iu2_power5)\
46 
                    |(du4_power5,iu1_power5)")
47 
 
48 
(define_reservation "fpq_power5"
49 
                    "(du1_power5,fpu1_power5)\
50 
                    |(du2_power5,fpu2_power5)\
51 
                    |(du3_power5,fpu2_power5)\
52 
                    |(du4_power5,fpu1_power5)")
53 
 
54 
; Dispatch slots are allocated in order conforming to program order.
55 
(absence_set "du1_power5" "du2_power5,du3_power5,du4_power5,du5_power5")
56 
(absence_set "du2_power5" "du3_power5,du4_power5,du5_power5")
57 
(absence_set "du3_power5" "du4_power5,du5_power5")
58 
(absence_set "du4_power5" "du5_power5")
59 
 
60 
 
61 
; Load/store
62 
(define_insn_reservation "power5-load" 4 ; 3
63 
  (and (eq_attr "type" "load")
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       (eq_attr "cpu" "power5"))
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  "lsq_power5")
66 
 
67 
(define_insn_reservation "power5-load-ext" 5
68 
  (and (eq_attr "type" "load_ext")
69 
       (eq_attr "cpu" "power5"))
70 
  "du1_power5+du2_power5,lsu1_power5,nothing,nothing,iu2_power5")
71 
 
72 
(define_insn_reservation "power5-load-ext-update" 5
73 
  (and (eq_attr "type" "load_ext_u")
74 
       (eq_attr "cpu" "power5"))
75 
  "du1_power5+du2_power5+du3_power5+du4_power5,\
76 
   lsu1_power5+iu2_power5,nothing,nothing,iu2_power5")
77 
 
78 
(define_insn_reservation "power5-load-ext-update-indexed" 5
79 
  (and (eq_attr "type" "load_ext_ux")
80 
       (eq_attr "cpu" "power5"))
81 
  "du1_power5+du2_power5+du3_power5+du4_power5,\
82 
   iu1_power5,lsu2_power5+iu1_power5,nothing,nothing,iu2_power5")
83 
 
84 
(define_insn_reservation "power5-load-update-indexed" 3
85 
  (and (eq_attr "type" "load_ux")
86 
       (eq_attr "cpu" "power5"))
87 
  "du1_power5+du2_power5+du3_power5+du4_power5,\
88 
   iu1_power5,lsu2_power5+iu2_power5")
89 
 
90 
(define_insn_reservation "power5-load-update" 4 ; 3
91 
  (and (eq_attr "type" "load_u")
92 
       (eq_attr "cpu" "power5"))
93 
  "du1_power5+du2_power5,lsu1_power5+iu2_power5")
94 
 
95 
(define_insn_reservation "power5-fpload" 6 ; 5
96 
  (and (eq_attr "type" "fpload")
97 
       (eq_attr "cpu" "power5"))
98 
  "lsq_power5")
99 
 
100 
(define_insn_reservation "power5-fpload-update" 6 ; 5
101 
  (and (eq_attr "type" "fpload_u,fpload_ux")
102 
       (eq_attr "cpu" "power5"))
103 
  "du1_power5+du2_power5,lsu1_power5+iu2_power5")
104 
 
105 
(define_insn_reservation "power5-store" 12
106 
  (and (eq_attr "type" "store")
107 
       (eq_attr "cpu" "power5"))
108 
  "(du1_power5,lsu1_power5,iu1_power5)\
109 
  |(du2_power5,lsu2_power5,iu2_power5)\
110 
  |(du3_power5,lsu2_power5,iu2_power5)\
111 
  |(du4_power5,lsu1_power5,iu1_power5)")
112 
 
113 
(define_insn_reservation "power5-store-update" 12
114 
  (and (eq_attr "type" "store_u")
115 
       (eq_attr "cpu" "power5"))
116 
  "du1_power5+du2_power5,lsu1_power5+iu2_power5,iu1_power5")
117 
 
118 
(define_insn_reservation "power5-store-update-indexed" 12
119 
  (and (eq_attr "type" "store_ux")
120 
       (eq_attr "cpu" "power5"))
121 
   "du1_power5+du2_power5+du3_power5+du4_power5,\
122 
    iu1_power5,lsu2_power5+iu2_power5,iu2_power5")
123 
 
124 
(define_insn_reservation "power5-fpstore" 12
125 
  (and (eq_attr "type" "fpstore")
126 
       (eq_attr "cpu" "power5"))
127 
  "(du1_power5,lsu1_power5,fpu1_power5)\
128 
  |(du2_power5,lsu2_power5,fpu2_power5)\
129 
  |(du3_power5,lsu2_power5,fpu2_power5)\
130 
  |(du4_power5,lsu1_power5,fpu1_power5)")
131 
 
132 
(define_insn_reservation "power5-fpstore-update" 12
133 
  (and (eq_attr "type" "fpstore_u,fpstore_ux")
134 
       (eq_attr "cpu" "power5"))
135 
  "du1_power5+du2_power5,lsu1_power5+iu2_power5,fpu1_power5")
136 
 
137 
(define_insn_reservation "power5-llsc" 11
138 
  (and (eq_attr "type" "load_l,store_c,sync")
139 
       (eq_attr "cpu" "power5"))
140 
  "du1_power5+du2_power5+du3_power5+du4_power5,\
141 
  lsu1_power5")
142 
 
143 
 
144 
; Integer latency is 2 cycles
145 
(define_insn_reservation "power5-integer" 2
146 
  (and (eq_attr "type" "integer")
147 
       (eq_attr "cpu" "power5"))
148 
  "iq_power5")
149 
 
150 
(define_insn_reservation "power5-two" 2
151 
  (and (eq_attr "type" "two")
152 
       (eq_attr "cpu" "power5"))
153 
  "(du1_power5+du2_power5,iu1_power5,nothing,iu2_power5)\
154 
  |(du2_power5+du3_power5,iu2_power5,nothing,iu2_power5)\
155 
  |(du3_power5+du4_power5,iu2_power5,nothing,iu1_power5)\
156 
  |(du4_power5+du1_power5,iu1_power5,nothing,iu1_power5)")
157 
 
158 
(define_insn_reservation "power5-three" 2
159 
  (and (eq_attr "type" "three")
160 
       (eq_attr "cpu" "power5"))
161 
  "(du1_power5+du2_power5+du3_power5,\
162 
    iu1_power5,nothing,iu2_power5,nothing,iu2_power5)\
163 
  |(du2_power5+du3_power5+du4_power5,\
164 
    iu2_power5,nothing,iu2_power5,nothing,iu1_power5)\
165 
  |(du3_power5+du4_power5+du1_power5,\
166 
    iu2_power5,nothing,iu1_power5,nothing,iu1_power5)\
167 
  |(du4_power5+du1_power5+du2_power5,\
168 
    iu1_power5,nothing,iu2_power5,nothing,iu2_power5)")
169 
 
170 
(define_insn_reservation "power5-insert" 4
171 
  (and (eq_attr "type" "insert_word")
172 
       (eq_attr "cpu" "power5"))
173 
  "du1_power5+du2_power5,iu1_power5,nothing,iu2_power5")
174 
 
175 
(define_insn_reservation "power5-cmp" 3
176 
  (and (eq_attr "type" "cmp,fast_compare")
177 
       (eq_attr "cpu" "power5"))
178 
  "iq_power5")
179 
 
180 
(define_insn_reservation "power5-compare" 2
181 
  (and (eq_attr "type" "compare,delayed_compare")
182 
       (eq_attr "cpu" "power5"))
183 
  "du1_power5+du2_power5,iu1_power5,iu2_power5")
184 
 
185 
(define_bypass 4 "power5-compare" "power5-branch,power5-crlogical,power5-delayedcr,power5-mfcr,power5-mfcrf")
186 
 
187 
(define_insn_reservation "power5-lmul-cmp" 7
188 
  (and (eq_attr "type" "lmul_compare")
189 
       (eq_attr "cpu" "power5"))
190 
  "du1_power5+du2_power5,iu1_power5*6,iu2_power5")
191 
 
192 
(define_bypass 10 "power5-lmul-cmp" "power5-branch,power5-crlogical,power5-delayedcr,power5-mfcr,power5-mfcrf")
193 
 
194 
(define_insn_reservation "power5-imul-cmp" 5
195 
  (and (eq_attr "type" "imul_compare")
196 
       (eq_attr "cpu" "power5"))
197 
  "du1_power5+du2_power5,iu1_power5*4,iu2_power5")
198 
 
199 
(define_bypass 8 "power5-imul-cmp" "power5-branch,power5-crlogical,power5-delayedcr,power5-mfcr,power5-mfcrf")
200 
 
201 
(define_insn_reservation "power5-lmul" 7
202 
  (and (eq_attr "type" "lmul")
203 
       (eq_attr "cpu" "power5"))
204 
  "(du1_power5,iu1_power5*6)\
205 
  |(du2_power5,iu2_power5*6)\
206 
  |(du3_power5,iu2_power5*6)\
207 
  |(du4_power5,iu1_power5*6)")
208 
 
209 
(define_insn_reservation "power5-imul" 5
210 
  (and (eq_attr "type" "imul")
211 
       (eq_attr "cpu" "power5"))
212 
  "(du1_power5,iu1_power5*4)\
213 
  |(du2_power5,iu2_power5*4)\
214 
  |(du3_power5,iu2_power5*4)\
215 
  |(du4_power5,iu1_power5*4)")
216 
 
217 
(define_insn_reservation "power5-imul3" 4
218 
  (and (eq_attr "type" "imul2,imul3")
219 
       (eq_attr "cpu" "power5"))
220 
  "(du1_power5,iu1_power5*3)\
221 
  |(du2_power5,iu2_power5*3)\
222 
  |(du3_power5,iu2_power5*3)\
223 
  |(du4_power5,iu1_power5*3)")
224 
 
225 
 
226 
; SPR move only executes in first IU.
227 
; Integer division only executes in second IU.
228 
(define_insn_reservation "power5-idiv" 36
229 
  (and (eq_attr "type" "idiv")
230 
       (eq_attr "cpu" "power5"))
231 
  "du1_power5+du2_power5,iu2_power5*35")
232 
 
233 
(define_insn_reservation "power5-ldiv" 68
234 
  (and (eq_attr "type" "ldiv")
235 
       (eq_attr "cpu" "power5"))
236 
  "du1_power5+du2_power5,iu2_power5*67")
237 
 
238 
 
239 
(define_insn_reservation "power5-mtjmpr" 3
240 
  (and (eq_attr "type" "mtjmpr,mfjmpr")
241 
       (eq_attr "cpu" "power5"))
242 
  "du1_power5,bpu_power5")
243 
 
244 
 
245 
; Branches take dispatch Slot 4.  The presence_sets prevent other insn from
246 
; grabbing previous dispatch slots once this is assigned.
247 
(define_insn_reservation "power5-branch" 2
248 
  (and (eq_attr "type" "jmpreg,branch")
249 
       (eq_attr "cpu" "power5"))
250 
  "(du5_power5\
251 
   |du4_power5+du5_power5\
252 
   |du3_power5+du4_power5+du5_power5\
253 
   |du2_power5+du3_power5+du4_power5+du5_power5\
254 
   |du1_power5+du2_power5+du3_power5+du4_power5+du5_power5),bpu_power5")
255 
 
256 
 
257 
; Condition Register logical ops are split if non-destructive (RT != RB)
258 
(define_insn_reservation "power5-crlogical" 2
259 
  (and (eq_attr "type" "cr_logical")
260 
       (eq_attr "cpu" "power5"))
261 
  "du1_power5,cru_power5")
262 
 
263 
(define_insn_reservation "power5-delayedcr" 4
264 
  (and (eq_attr "type" "delayed_cr")
265 
       (eq_attr "cpu" "power5"))
266 
  "du1_power5+du2_power5,cru_power5,cru_power5")
267 
 
268 
; 4 mfcrf (each 3 cyc, 1/cyc) + 3 fxu
269 
(define_insn_reservation "power5-mfcr" 6
270 
  (and (eq_attr "type" "mfcr")
271 
       (eq_attr "cpu" "power5"))
272 
  "du1_power5+du2_power5+du3_power5+du4_power5,\
273 
   du1_power5+du2_power5+du3_power5+du4_power5+cru_power5,\
274 
   cru_power5,cru_power5,cru_power5")
275 
 
276 
; mfcrf (1 field)
277 
(define_insn_reservation "power5-mfcrf" 3
278 
  (and (eq_attr "type" "mfcrf")
279 
       (eq_attr "cpu" "power5"))
280 
  "du1_power5,cru_power5")
281 
 
282 
; mtcrf (1 field)
283 
(define_insn_reservation "power5-mtcr" 4
284 
  (and (eq_attr "type" "mtcr")
285 
       (eq_attr "cpu" "power5"))
286 
  "du1_power5,iu1_power5")
287 
 
288 
; Basic FP latency is 6 cycles
289 
(define_insn_reservation "power5-fp" 6
290 
  (and (eq_attr "type" "fp,dmul")
291 
       (eq_attr "cpu" "power5"))
292 
  "fpq_power5")
293 
 
294 
(define_insn_reservation "power5-fpcompare" 5
295 
  (and (eq_attr "type" "fpcompare")
296 
       (eq_attr "cpu" "power5"))
297 
  "fpq_power5")
298 
 
299 
(define_insn_reservation "power5-sdiv" 33
300 
  (and (eq_attr "type" "sdiv,ddiv")
301 
       (eq_attr "cpu" "power5"))
302 
  "(du1_power5,fpu1_power5*28)\
303 
  |(du2_power5,fpu2_power5*28)\
304 
  |(du3_power5,fpu2_power5*28)\
305 
  |(du4_power5,fpu1_power5*28)")
306 
 
307 
(define_insn_reservation "power5-sqrt" 40
308 
  (and (eq_attr "type" "ssqrt,dsqrt")
309 
       (eq_attr "cpu" "power5"))
310 
  "(du1_power5,fpu1_power5*35)\
311 
  |(du2_power5,fpu2_power5*35)\
312 
  |(du3_power5,fpu2_power5*35)\
313 
  |(du4_power5,fpu2_power5*35)")
314 
 
315 
(define_insn_reservation "power5-isync" 2
316 
  (and (eq_attr "type" "isync")
317 
       (eq_attr "cpu" "power5"))
318 
  "du1_power5+du2_power5+du3_power5+du4_power5,\
319 
  lsu1_power5")
320 
 

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