1 ;; Marvell WMMX2 pipeline description
2 ;; Copyright (C) 2011-2013 Free Software Foundation, Inc.
3 ;; Written by Marvell, Inc.
5 ;; This file is part of GCC.
7 ;; GCC is free software; you can redistribute it and/or modify it
8 ;; under the terms of the GNU General Public License as published
9 ;; by the Free Software Foundation; either version 3, or (at your
10 ;; option) any later version.
12 ;; GCC is distributed in the hope that it will be useful, but WITHOUT
13 ;; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14 ;; or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
15 ;; 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/>.
22 (define_automaton "marvell_f_iwmmxt")
24 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
26 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
28 ;; This is a 7-stage pipelines:
30 ;; MD | MI | ME1 | ME2 | ME3 | ME4 | MW
32 ;; There are various bypasses modelled to a greater or lesser extent.
34 ;; Latencies in this file correspond to the number of cycles after
35 ;; the issue stage that it takes for the result of the instruction to
36 ;; be computed, or for its side-effects to occur.
38 (define_cpu_unit "mf_iwmmxt_MD" "marvell_f_iwmmxt")
39 (define_cpu_unit "mf_iwmmxt_MI" "marvell_f_iwmmxt")
40 (define_cpu_unit "mf_iwmmxt_ME1" "marvell_f_iwmmxt")
41 (define_cpu_unit "mf_iwmmxt_ME2" "marvell_f_iwmmxt")
42 (define_cpu_unit "mf_iwmmxt_ME3" "marvell_f_iwmmxt")
43 (define_cpu_unit "mf_iwmmxt_ME4" "marvell_f_iwmmxt")
44 (define_cpu_unit "mf_iwmmxt_MW" "marvell_f_iwmmxt")
46 (define_reservation "mf_iwmmxt_ME"
47 "mf_iwmmxt_ME1,mf_iwmmxt_ME2,mf_iwmmxt_ME3,mf_iwmmxt_ME4"
50 (define_reservation "mf_iwmmxt_pipeline"
51 "mf_iwmmxt_MD, mf_iwmmxt_MI, mf_iwmmxt_ME, mf_iwmmxt_MW"
54 ;; An attribute to indicate whether our reservations are applicable.
55 (define_attr "marvell_f_iwmmxt" "yes,no"
56 (const (if_then_else (symbol_ref "arm_arch_iwmmxt")
57 (const_string "yes") (const_string "no"))))
59 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
60 ;; instruction classes
61 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
63 ;; An attribute appended to instructions for classification
65 (define_attr "wmmxt_shift" "yes,no"
66 (if_then_else (eq_attr "wtype" "wror, wsll, wsra, wsrl")
67 (const_string "yes") (const_string "no"))
70 (define_attr "wmmxt_pack" "yes,no"
71 (if_then_else (eq_attr "wtype" "waligni, walignr, wmerge, wpack, wshufh, wunpckeh, wunpckih, wunpckel, wunpckil")
72 (const_string "yes") (const_string "no"))
75 (define_attr "wmmxt_mult_c1" "yes,no"
76 (if_then_else (eq_attr "wtype" "wmac, wmadd, wmiaxy, wmiawxy, wmulw, wqmiaxy, wqmulwm")
77 (const_string "yes") (const_string "no"))
80 (define_attr "wmmxt_mult_c2" "yes,no"
81 (if_then_else (eq_attr "wtype" "wmul, wqmulm")
82 (const_string "yes") (const_string "no"))
85 (define_attr "wmmxt_alu_c1" "yes,no"
86 (if_then_else (eq_attr "wtype" "wabs, wabsdiff, wand, wandn, wmov, wor, wxor")
87 (const_string "yes") (const_string "no"))
90 (define_attr "wmmxt_alu_c2" "yes,no"
91 (if_then_else (eq_attr "wtype" "wacc, wadd, waddsubhx, wavg2, wavg4, wcmpeq, wcmpgt, wmax, wmin, wsub, waddbhus, wsubaddhx")
92 (const_string "yes") (const_string "no"))
95 (define_attr "wmmxt_alu_c3" "yes,no"
96 (if_then_else (eq_attr "wtype" "wsad")
97 (const_string "yes") (const_string "no"))
100 (define_attr "wmmxt_transfer_c1" "yes,no"
101 (if_then_else (eq_attr "wtype" "tbcst, tinsr, tmcr, tmcrr")
102 (const_string "yes") (const_string "no"))
105 (define_attr "wmmxt_transfer_c2" "yes,no"
106 (if_then_else (eq_attr "wtype" "textrm, tmovmsk, tmrc, tmrrc")
107 (const_string "yes") (const_string "no"))
110 (define_attr "wmmxt_transfer_c3" "yes,no"
111 (if_then_else (eq_attr "wtype" "tmia, tmiaph, tmiaxy")
112 (const_string "yes") (const_string "no"))
115 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
117 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
119 (define_insn_reservation "marvell_f_iwmmxt_alu_c1" 1
120 (and (eq_attr "marvell_f_iwmmxt" "yes")
121 (eq_attr "wmmxt_alu_c1" "yes"))
122 "mf_iwmmxt_pipeline")
124 (define_insn_reservation "marvell_f_iwmmxt_pack" 1
125 (and (eq_attr "marvell_f_iwmmxt" "yes")
126 (eq_attr "wmmxt_pack" "yes"))
127 "mf_iwmmxt_pipeline")
129 (define_insn_reservation "marvell_f_iwmmxt_shift" 1
130 (and (eq_attr "marvell_f_iwmmxt" "yes")
131 (eq_attr "wmmxt_shift" "yes"))
132 "mf_iwmmxt_pipeline")
134 (define_insn_reservation "marvell_f_iwmmxt_transfer_c1" 1
135 (and (eq_attr "marvell_f_iwmmxt" "yes")
136 (eq_attr "wmmxt_transfer_c1" "yes"))
137 "mf_iwmmxt_pipeline")
139 (define_insn_reservation "marvell_f_iwmmxt_transfer_c2" 5
140 (and (eq_attr "marvell_f_iwmmxt" "yes")
141 (eq_attr "wmmxt_transfer_c2" "yes"))
142 "mf_iwmmxt_pipeline")
144 (define_insn_reservation "marvell_f_iwmmxt_alu_c2" 2
145 (and (eq_attr "marvell_f_iwmmxt" "yes")
146 (eq_attr "wmmxt_alu_c2" "yes"))
147 "mf_iwmmxt_pipeline")
149 (define_insn_reservation "marvell_f_iwmmxt_alu_c3" 3
150 (and (eq_attr "marvell_f_iwmmxt" "yes")
151 (eq_attr "wmmxt_alu_c3" "yes"))
152 "mf_iwmmxt_pipeline")
154 (define_insn_reservation "marvell_f_iwmmxt_transfer_c3" 4
155 (and (eq_attr "marvell_f_iwmmxt" "yes")
156 (eq_attr "wmmxt_transfer_c3" "yes"))
157 "mf_iwmmxt_pipeline")
159 (define_insn_reservation "marvell_f_iwmmxt_mult_c1" 4
160 (and (eq_attr "marvell_f_iwmmxt" "yes")
161 (eq_attr "wmmxt_mult_c1" "yes"))
162 "mf_iwmmxt_pipeline")
164 ;There is a forwarding path from ME3 stage
165 (define_insn_reservation "marvell_f_iwmmxt_mult_c2" 3
166 (and (eq_attr "marvell_f_iwmmxt" "yes")
167 (eq_attr "wmmxt_mult_c2" "yes"))
168 "mf_iwmmxt_pipeline")
170 (define_insn_reservation "marvell_f_iwmmxt_wstr" 0
171 (and (eq_attr "marvell_f_iwmmxt" "yes")
172 (eq_attr "wtype" "wstr"))
173 "mf_iwmmxt_pipeline")
175 ;There is a forwarding path from MW stage
176 (define_insn_reservation "marvell_f_iwmmxt_wldr" 5
177 (and (eq_attr "marvell_f_iwmmxt" "yes")
178 (eq_attr "wtype" "wldr"))
179 "mf_iwmmxt_pipeline")