summaryrefslogtreecommitdiff
path: root/gcc/config/rs6000/7xx.md
blob: 84dff6f4b140b9e4c61b55cc248e10093a76fc94 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
;; Scheduling description for Motorola PowerPC 750 and PowerPC 7400 processors.
;;   Copyright (C) 2003-2015 Free Software Foundation, Inc.
;;
;; This file is part of GCC.

;; GCC is free software; you can redistribute it and/or modify it
;; under the terms of the GNU General Public License as published
;; by the Free Software Foundation; either version 3, or (at your
;; option) any later version.

;; GCC is distributed in the hope that it will be useful, but WITHOUT
;; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
;; or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
;; License for more details.

;; You should have received a copy of the GNU General Public License
;; along with GCC; see the file COPYING3.  If not see
;; <http://www.gnu.org/licenses/>.

(define_automaton "ppc7xx,ppc7xxfp")
(define_cpu_unit "iu1_7xx,iu2_7xx" "ppc7xx")
(define_cpu_unit "fpu_7xx" "ppc7xxfp")
(define_cpu_unit "lsu_7xx,bpu_7xx,sru_7xx" "ppc7xx")
(define_cpu_unit "du1_7xx,du2_7xx" "ppc7xx")
(define_cpu_unit "veccmplx_7xx,vecperm_7xx,vdu_7xx" "ppc7xx")

;; PPC740/PPC750/PPC7400  32-bit 2xIU, LSU, SRU, FPU, BPU
;; IU1 can perform all integer operations
;; IU2 can perform all integer operations except imul and idiv
;; LSU 2 stage pipelined
;; FPU 3 stage pipelined
;; Max issue 3 insns/clock cycle (includes 1 branch)
;; In-order execution


;; The PPC750 user's manual recommends that to reduce branch mispredictions,
;; the insn that sets CR bits should be separated from the branch insn
;; that evaluates them.  There is no advantage have more than 10 cycles
;; of separation.
;; This could be artificially achieved by exaggerating the latency of
;; compare insns but at the expense of a poorer schedule.

;; Branches go straight to the BPU.  All other insns are handled
;; by a dispatch unit which can issue a max of 2 insns per cycle.
(define_reservation "ppc750_du" "du1_7xx|du2_7xx")
(define_reservation "ppc7400_vec_du" "vdu_7xx")

(define_insn_reservation "ppc750-load" 2
  (and (eq_attr "type" "load,fpload,vecload,load_l")
       (eq_attr "cpu" "ppc750,ppc7400"))
  "ppc750_du,lsu_7xx")

(define_insn_reservation "ppc750-store" 2
  (and (eq_attr "type" "store,fpstore,vecstore")
       (eq_attr "cpu" "ppc750,ppc7400"))
  "ppc750_du,lsu_7xx")

(define_insn_reservation "ppc750-storec" 8
  (and (eq_attr "type" "store_c")
       (eq_attr "cpu" "ppc750,ppc7400"))
  "ppc750_du,lsu_7xx")

(define_insn_reservation "ppc750-integer" 1
  (and (ior (eq_attr "type" "integer,insert,trap,cntlz,isel")
	    (and (eq_attr "type" "add,logical,shift,exts")
		 (eq_attr "dot" "no")))
       (eq_attr "cpu" "ppc750,ppc7400"))
  "ppc750_du,iu1_7xx|iu2_7xx")

(define_insn_reservation "ppc750-two" 1
  (and (eq_attr "type" "two")
       (eq_attr "cpu" "ppc750,ppc7400"))
  "ppc750_du,iu1_7xx|iu2_7xx,iu1_7xx|iu2_7xx")

(define_insn_reservation "ppc750-three" 1
  (and (eq_attr "type" "three")
       (eq_attr "cpu" "ppc750,ppc7400"))
  "ppc750_du,iu1_7xx|iu2_7xx,iu1_7xx|iu2_7xx,iu1_7xx|iu2_7xx")

(define_insn_reservation "ppc750-imul" 4
  (and (eq_attr "type" "mul")
       (eq_attr "size" "32")
       (eq_attr "cpu" "ppc750,ppc7400"))
  "ppc750_du,iu1_7xx*4")

(define_insn_reservation "ppc750-imul2" 3
  (and (eq_attr "type" "mul")
       (eq_attr "size" "16")
       (eq_attr "cpu" "ppc750,ppc7400"))
  "ppc750_du,iu1_7xx*2")

(define_insn_reservation "ppc750-imul3" 2
  (and (eq_attr "type" "mul")
       (eq_attr "size" "8")
       (eq_attr "cpu" "ppc750,ppc7400"))
  "ppc750_du,iu1_7xx")

(define_insn_reservation "ppc750-idiv" 19
  (and (eq_attr "type" "div")
       (eq_attr "cpu" "ppc750,ppc7400"))
  "ppc750_du,iu1_7xx*19")

(define_insn_reservation "ppc750-compare" 2
  (and (ior (eq_attr "type" "cmp")
	    (and (eq_attr "type" "add,logical,shift,exts")
		 (eq_attr "dot" "yes")))
       (eq_attr "cpu" "ppc750,ppc7400"))
  "ppc750_du,(iu1_7xx|iu2_7xx)")

(define_insn_reservation "ppc750-fpcompare" 2
  (and (eq_attr "type" "fpcompare")
       (eq_attr "cpu" "ppc750,ppc7400"))
  "ppc750_du,fpu_7xx")

(define_insn_reservation "ppc750-fp" 3
  (and (eq_attr "type" "fp")
       (eq_attr "cpu" "ppc750,ppc7400"))
  "ppc750_du,fpu_7xx")

(define_insn_reservation "ppc750-dmul" 4
  (and (eq_attr "type" "dmul")
       (eq_attr "cpu" "ppc750"))
  "ppc750_du,fpu_7xx*2")

(define_insn_reservation "ppc7400-dmul" 3
  (and (eq_attr "type" "dmul")
       (eq_attr "cpu" "ppc7400"))
  "ppc750_du,fpu_7xx")

; Divides are not pipelined
(define_insn_reservation "ppc750-sdiv" 17
  (and (eq_attr "type" "sdiv")
       (eq_attr "cpu" "ppc750,ppc7400"))
  "ppc750_du,fpu_7xx*17")

(define_insn_reservation "ppc750-ddiv" 31
  (and (eq_attr "type" "ddiv")
       (eq_attr "cpu" "ppc750,ppc7400"))
  "ppc750_du,fpu_7xx*31")

(define_insn_reservation "ppc750-mfcr" 2
  (and (eq_attr "type" "mfcr,mtcr")
       (eq_attr "cpu" "ppc750,ppc7400"))
  "ppc750_du,iu1_7xx")

(define_insn_reservation "ppc750-crlogical" 3
  (and (eq_attr "type" "cr_logical,delayed_cr")
       (eq_attr "cpu" "ppc750,ppc7400"))
  "nothing,sru_7xx*2")

(define_insn_reservation "ppc750-mtjmpr" 2
  (and (eq_attr "type" "mtjmpr,isync,sync")
       (eq_attr "cpu" "ppc750,ppc7400"))
  "nothing,sru_7xx*2")

(define_insn_reservation "ppc750-mfjmpr" 3
  (and (eq_attr "type" "mfjmpr")
       (eq_attr "cpu" "ppc750,ppc7400"))
  "nothing,sru_7xx*2")

(define_insn_reservation "ppc750-jmpreg" 1
  (and (eq_attr "type" "jmpreg,branch,isync")
       (eq_attr "cpu" "ppc750,ppc7400"))
  "nothing,bpu_7xx")

;; Altivec
(define_insn_reservation "ppc7400-vecsimple" 1
  (and (eq_attr "type" "vecsimple,veccmp")
       (eq_attr "cpu" "ppc7400"))
  "ppc750_du,ppc7400_vec_du,veccmplx_7xx")

(define_insn_reservation "ppc7400-veccomplex" 4
  (and (eq_attr "type" "veccomplex")
       (eq_attr "cpu" "ppc7400"))
  "ppc750_du,ppc7400_vec_du,veccmplx_7xx")

(define_insn_reservation "ppc7400-vecfloat" 4
  (and (eq_attr "type" "vecfloat")
       (eq_attr "cpu" "ppc7400"))
  "ppc750_du,ppc7400_vec_du,veccmplx_7xx")

(define_insn_reservation "ppc7400-vecperm" 2
  (and (eq_attr "type" "vecperm")
       (eq_attr "cpu" "ppc7400"))
  "ppc750_du,ppc7400_vec_du,vecperm_7xx")