1 ;; Scheduling description for Motorola PowerPC 750 and PowerPC 7400 processors.
2 ;; Copyright (C) 2003, 2004 Free Software Foundation, Inc.
4 ;; This file is part of GCC.
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
8 ;; by the Free Software Foundation; either version 2, or (at your
9 ;; option) any later version.
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
14 ;; License for more details.
16 ;; You should have received a copy of the GNU General Public License
17 ;; along with GCC; see the file COPYING. If not, write to the
18 ;; Free Software Foundation, 51 Franklin Street, Fifth Floor, Boston,
19 ;; MA 02110-1301, USA.
21 (define_automaton "ppc7xx,ppc7xxfp")
22 (define_cpu_unit "iu1_7xx,iu2_7xx" "ppc7xx")
23 (define_cpu_unit "fpu_7xx" "ppc7xxfp")
24 (define_cpu_unit "lsu_7xx,bpu_7xx,sru_7xx" "ppc7xx")
25 (define_cpu_unit "du1_7xx,du2_7xx" "ppc7xx")
26 (define_cpu_unit "veccmplx_7xx,vecperm_7xx,vdu_7xx" "ppc7xx")
28 ;; PPC740/PPC750/PPC7400 32-bit 2xIU, LSU, SRU, FPU, BPU
29 ;; IU1 can perform all integer operations
30 ;; IU2 can perform all integer operations except imul and idiv
31 ;; LSU 2 stage pipelined
32 ;; FPU 3 stage pipelined
33 ;; Max issue 3 insns/clock cycle (includes 1 branch)
37 ;; The PPC750 user's manual recommends that to reduce branch mispredictions,
38 ;; the insn that sets CR bits should be separated from the branch insn
39 ;; that evaluates them. There is no advantage have more than 10 cycles
41 ;; This could be artificially achieved by exaggerating the latency of
42 ;; compare insns but at the expense of a poorer schedule.
44 ;; Branches go straight to the BPU. All other insns are handled
45 ;; by a dispatch unit which can issue a max of 2 insns per cycle.
46 (define_reservation "ppc750_du" "du1_7xx|du2_7xx")
47 (define_reservation "ppc7400_vec_du" "vdu_7xx")
49 (define_insn_reservation "ppc750-load" 2
50 (and (eq_attr "type" "load,load_ext,load_ext_u,load_ext_ux,\
51 load_ux,load_u,fpload,fpload_ux,fpload_u,\
53 (eq_attr "cpu" "ppc750,ppc7400"))
56 (define_insn_reservation "ppc750-store" 2
57 (and (eq_attr "type" "store,store_ux,store_u,\
58 fpstore,fpstore_ux,fpstore_u,vecstore")
59 (eq_attr "cpu" "ppc750,ppc7400"))
62 (define_insn_reservation "ppc750-storec" 8
63 (and (eq_attr "type" "store_c")
64 (eq_attr "cpu" "ppc750,ppc7400"))
67 (define_insn_reservation "ppc750-integer" 1
68 (and (eq_attr "type" "integer,insert_word,insert_dword,shift,\
69 trap,var_shift_rotate,cntlz,exts")
70 (eq_attr "cpu" "ppc750,ppc7400"))
71 "ppc750_du,iu1_7xx|iu2_7xx")
73 (define_insn_reservation "ppc750-two" 1
74 (and (eq_attr "type" "two")
75 (eq_attr "cpu" "ppc750,ppc7400"))
76 "ppc750_du,iu1_7xx|iu2_7xx,iu1_7xx|iu2_7xx")
78 (define_insn_reservation "ppc750-three" 1
79 (and (eq_attr "type" "three")
80 (eq_attr "cpu" "ppc750,ppc7400"))
81 "ppc750_du,iu1_7xx|iu2_7xx,iu1_7xx|iu2_7xx,iu1_7xx|iu2_7xx")
83 (define_insn_reservation "ppc750-imul" 4
84 (and (eq_attr "type" "imul,imul_compare")
85 (eq_attr "cpu" "ppc750,ppc7400"))
86 "ppc750_du,iu1_7xx*4")
88 (define_insn_reservation "ppc750-imul2" 3
89 (and (eq_attr "type" "imul2")
90 (eq_attr "cpu" "ppc750,ppc7400"))
91 "ppc750_du,iu1_7xx*2")
93 (define_insn_reservation "ppc750-imul3" 2
94 (and (eq_attr "type" "imul3")
95 (eq_attr "cpu" "ppc750,ppc7400"))
98 (define_insn_reservation "ppc750-idiv" 19
99 (and (eq_attr "type" "idiv")
100 (eq_attr "cpu" "ppc750,ppc7400"))
101 "ppc750_du,iu1_7xx*19")
103 (define_insn_reservation "ppc750-compare" 2
104 (and (eq_attr "type" "cmp,fast_compare,compare,delayed_compare,\
105 var_delayed_compare")
106 (eq_attr "cpu" "ppc750,ppc7400"))
107 "ppc750_du,(iu1_7xx|iu2_7xx)")
109 (define_insn_reservation "ppc750-fpcompare" 2
110 (and (eq_attr "type" "fpcompare")
111 (eq_attr "cpu" "ppc750,ppc7400"))
114 (define_insn_reservation "ppc750-fp" 3
115 (and (eq_attr "type" "fp")
116 (eq_attr "cpu" "ppc750,ppc7400"))
119 (define_insn_reservation "ppc750-dmul" 4
120 (and (eq_attr "type" "dmul")
121 (eq_attr "cpu" "ppc750"))
122 "ppc750_du,fpu_7xx*2")
124 (define_insn_reservation "ppc7400-dmul" 3
125 (and (eq_attr "type" "dmul")
126 (eq_attr "cpu" "ppc7400"))
129 ; Divides are not pipelined
130 (define_insn_reservation "ppc750-sdiv" 17
131 (and (eq_attr "type" "sdiv")
132 (eq_attr "cpu" "ppc750,ppc7400"))
133 "ppc750_du,fpu_7xx*17")
135 (define_insn_reservation "ppc750-ddiv" 31
136 (and (eq_attr "type" "ddiv")
137 (eq_attr "cpu" "ppc750,ppc7400"))
138 "ppc750_du,fpu_7xx*31")
140 (define_insn_reservation "ppc750-mfcr" 2
141 (and (eq_attr "type" "mfcr,mtcr")
142 (eq_attr "cpu" "ppc750,ppc7400"))
145 (define_insn_reservation "ppc750-crlogical" 3
146 (and (eq_attr "type" "cr_logical,delayed_cr")
147 (eq_attr "cpu" "ppc750,ppc7400"))
150 (define_insn_reservation "ppc750-mtjmpr" 2
151 (and (eq_attr "type" "mtjmpr,isync,sync")
152 (eq_attr "cpu" "ppc750,ppc7400"))
155 (define_insn_reservation "ppc750-mfjmpr" 3
156 (and (eq_attr "type" "mfjmpr")
157 (eq_attr "cpu" "ppc750,ppc7400"))
160 (define_insn_reservation "ppc750-jmpreg" 1
161 (and (eq_attr "type" "jmpreg,branch,isync")
162 (eq_attr "cpu" "ppc750,ppc7400"))
166 (define_insn_reservation "ppc7400-vecsimple" 1
167 (and (eq_attr "type" "vecsimple,veccmp")
168 (eq_attr "cpu" "ppc7400"))
169 "ppc750_du,ppc7400_vec_du,veccmplx_7xx")
171 (define_insn_reservation "ppc7400-veccomplex" 4
172 (and (eq_attr "type" "veccomplex")
173 (eq_attr "cpu" "ppc7400"))
174 "ppc750_du,ppc7400_vec_du,veccmplx_7xx")
176 (define_insn_reservation "ppc7400-vecfloat" 4
177 (and (eq_attr "type" "vecfloat")
178 (eq_attr "cpu" "ppc7400"))
179 "ppc750_du,ppc7400_vec_du,veccmplx_7xx")
181 (define_insn_reservation "ppc7400-vecperm" 2
182 (and (eq_attr "type" "vecperm")
183 (eq_attr "cpu" "ppc7400"))
184 "ppc750_du,ppc7400_vec_du,vecperm_7xx")