1 ;; Octeon pipeline description.
3 ;; Free Software Foundation, Inc.
5 ;; This file is part of GCC.
7 ;; GCC is free software; you can redistribute it and/or modify
8 ;; it under the terms of the GNU General Public License as published by
9 ;; the Free Software Foundation; either version 3, or (at your option)
12 ;; GCC is distributed in the hope that it will be useful,
13 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
14 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 ;; GNU General Public License for more details.
17 ;; You should have received a copy of the GNU General Public License
18 ;; along with GCC; see the file COPYING3. If not see
19 ;; <http://www.gnu.org/licenses/>.
20 ;; Copyright (C) 2004, 2005, 2006 Cavium Networks.
23 ;; Octeon is a dual-issue processor that can issue all instructions on
24 ;; pipe0 and a subset on pipe1.
26 (define_automaton "octeon_main, octeon_mult")
28 (define_cpu_unit "octeon_pipe0" "octeon_main")
29 (define_cpu_unit "octeon_pipe1" "octeon_main")
30 (define_cpu_unit "octeon_mult" "octeon_mult")
32 (define_insn_reservation "octeon_arith" 1
33 (and (eq_attr "cpu" "octeon,octeon2")
34 (eq_attr "type" "arith,const,logical,move,shift,signext,slt,nop"))
35 "octeon_pipe0 | octeon_pipe1")
37 (define_insn_reservation "octeon_condmove" 2
38 (and (eq_attr "cpu" "octeon,octeon2")
39 (eq_attr "type" "condmove"))
40 "octeon_pipe0 | octeon_pipe1")
42 (define_insn_reservation "octeon_load_o1" 2
43 (and (eq_attr "cpu" "octeon")
44 (eq_attr "type" "load,prefetch,mtc,mfc"))
47 (define_insn_reservation "octeon_load_o2" 3
48 (and (eq_attr "cpu" "octeon2")
49 (eq_attr "type" "load,prefetch"))
52 ;; ??? memory-related cop0 reads are pipe0 with 3-cycle latency.
53 ;; Front-end-related ones are 1-cycle on pipe1. Assume front-end for now.
54 (define_insn_reservation "octeon_cop_o2" 1
55 (and (eq_attr "cpu" "octeon2")
56 (eq_attr "type" "mtc,mfc"))
59 (define_insn_reservation "octeon_store" 1
60 (and (eq_attr "cpu" "octeon,octeon2")
61 (eq_attr "type" "store"))
64 (define_insn_reservation "octeon_brj_o1" 1
65 (and (eq_attr "cpu" "octeon")
66 (eq_attr "type" "branch,jump,call,trap"))
69 (define_insn_reservation "octeon_brj_o2" 2
70 (and (eq_attr "cpu" "octeon2")
71 (eq_attr "type" "branch,jump,call,trap"))
74 (define_insn_reservation "octeon_imul3_o1" 5
75 (and (eq_attr "cpu" "octeon")
76 (eq_attr "type" "imul3,pop,clz"))
77 "(octeon_pipe0 | octeon_pipe1) + octeon_mult")
79 (define_insn_reservation "octeon_imul3_o2" 6
80 (and (eq_attr "cpu" "octeon2")
81 (eq_attr "type" "imul3,pop,clz"))
82 "octeon_pipe1 + octeon_mult")
84 (define_insn_reservation "octeon_imul_o1" 2
85 (and (eq_attr "cpu" "octeon")
86 (eq_attr "type" "imul,mthilo"))
87 "(octeon_pipe0 | octeon_pipe1) + octeon_mult, octeon_mult")
89 (define_insn_reservation "octeon_imul_o2" 1
90 (and (eq_attr "cpu" "octeon2")
91 (eq_attr "type" "imul,mthilo"))
92 "octeon_pipe1 + octeon_mult")
94 (define_insn_reservation "octeon_mfhilo_o1" 5
95 (and (eq_attr "cpu" "octeon")
96 (eq_attr "type" "mfhilo"))
97 "(octeon_pipe0 | octeon_pipe1) + octeon_mult")
99 (define_insn_reservation "octeon_mfhilo_o2" 6
100 (and (eq_attr "cpu" "octeon2")
101 (eq_attr "type" "mfhilo"))
102 "octeon_pipe1 + octeon_mult")
104 (define_insn_reservation "octeon_imadd_o1" 4
105 (and (eq_attr "cpu" "octeon")
106 (eq_attr "type" "imadd"))
107 "(octeon_pipe0 | octeon_pipe1) + octeon_mult, octeon_mult*3")
109 (define_insn_reservation "octeon_imadd_o2" 1
110 (and (eq_attr "cpu" "octeon2")
111 (eq_attr "type" "imadd"))
112 "octeon_pipe1 + octeon_mult")
114 (define_insn_reservation "octeon_idiv_o1" 72
115 (and (eq_attr "cpu" "octeon")
116 (eq_attr "type" "idiv"))
117 "(octeon_pipe0 | octeon_pipe1) + octeon_mult, octeon_mult*71")
119 (define_insn_reservation "octeon_idiv_o2_si" 18
120 (and (eq_attr "cpu" "octeon2")
121 (eq_attr "mode" "SI")
122 (eq_attr "type" "idiv"))
123 "octeon_pipe1 + octeon_mult, octeon_mult*17")
125 (define_insn_reservation "octeon_idiv_o2_di" 35
126 (and (eq_attr "cpu" "octeon2")
127 (eq_attr "mode" "DI")
128 (eq_attr "type" "idiv"))
129 "octeon_pipe1 + octeon_mult, octeon_mult*34")
131 ;; Assume both pipes are needed for unknown and multiple-instruction
134 (define_insn_reservation "octeon_unknown" 1
135 (and (eq_attr "cpu" "octeon,octeon2")
136 (eq_attr "type" "unknown,multi"))
137 "octeon_pipe0 + octeon_pipe1")