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a9790f8f | 1 | ;; Pipeline model for Loongson-3A cores. |
2 | ||
f1717362 | 3 | ;; Copyright (C) 2011-2016 Free Software Foundation, Inc. |
a9790f8f | 4 | ;; |
5 | ;; This file is part of GCC. | |
6 | ;; | |
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. | |
11 | ;; | |
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. | |
16 | ;; | |
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 | ||
21 | ;; Uncomment the following line to output automata for debugging. | |
22 | ;; (automata_option "v") | |
23 | ||
24 | ;; Automaton for integer instructions. | |
25 | (define_automaton "ls3a_a_alu") | |
26 | ||
27 | ;; Automaton for floating-point instructions. | |
28 | (define_automaton "ls3a_a_falu") | |
29 | ||
30 | ;; Automaton for memory operations. | |
31 | (define_automaton "ls3a_a_mem") | |
32 | ||
33 | ;; Describe the resources. | |
34 | ||
35 | (define_cpu_unit "ls3a_alu1" "ls3a_a_alu") | |
36 | (define_cpu_unit "ls3a_alu2" "ls3a_a_alu") | |
37 | (define_cpu_unit "ls3a_mem" "ls3a_a_mem") | |
38 | (define_cpu_unit "ls3a_falu1" "ls3a_a_falu") | |
39 | (define_cpu_unit "ls3a_falu2" "ls3a_a_falu") | |
40 | ||
41 | ;; Describe instruction reservations. | |
42 | ||
43 | (define_insn_reservation "ls3a_arith" 1 | |
44 | (and (eq_attr "cpu" "loongson_3a") | |
45 | (eq_attr "type" "arith,clz,const,logical, | |
46 | move,nop,shift,signext,slt")) | |
47 | "ls3a_alu1 | ls3a_alu2") | |
48 | ||
49 | (define_insn_reservation "ls3a_branch" 1 | |
50 | (and (eq_attr "cpu" "loongson_3a") | |
51 | (eq_attr "type" "branch,jump,call,condmove,trap")) | |
52 | "ls3a_alu1") | |
53 | ||
54 | (define_insn_reservation "ls3a_mfhilo" 1 | |
55 | (and (eq_attr "cpu" "loongson_3a") | |
8ad8575f | 56 | (eq_attr "type" "mfhi,mflo,mthi,mtlo")) |
a9790f8f | 57 | "ls3a_alu2") |
58 | ||
59 | ;; Operation imul3nc is fully pipelined. | |
60 | (define_insn_reservation "ls3a_imul3nc" 5 | |
61 | (and (eq_attr "cpu" "loongson_3a") | |
62 | (eq_attr "type" "imul3nc")) | |
63 | "ls3a_alu2") | |
64 | ||
65 | (define_insn_reservation "ls3a_imul" 7 | |
66 | (and (eq_attr "cpu" "loongson_3a") | |
67 | (eq_attr "type" "imul,imadd")) | |
68 | "ls3a_alu2 * 7") | |
69 | ||
70 | (define_insn_reservation "ls3a_idiv_si" 12 | |
71 | (and (eq_attr "cpu" "loongson_3a") | |
72 | (and (eq_attr "type" "idiv") | |
73 | (eq_attr "mode" "SI"))) | |
74 | "ls3a_alu2 * 12") | |
75 | ||
76 | (define_insn_reservation "ls3a_idiv_di" 25 | |
77 | (and (eq_attr "cpu" "loongson_3a") | |
78 | (and (eq_attr "type" "idiv") | |
79 | (eq_attr "mode" "DI"))) | |
80 | "ls3a_alu2 * 25") | |
81 | ||
82 | (define_insn_reservation "ls3a_load" 3 | |
83 | (and (eq_attr "cpu" "loongson_3a") | |
84 | (eq_attr "type" "load")) | |
85 | "ls3a_mem") | |
86 | ||
87 | (define_insn_reservation "ls3a_fpload" 4 | |
88 | (and (eq_attr "cpu" "loongson_3a") | |
89 | (eq_attr "type" "load,mfc,mtc")) | |
90 | "ls3a_mem") | |
91 | ||
92 | (define_insn_reservation "ls3a_prefetch" 0 | |
93 | (and (eq_attr "cpu" "loongson_3a") | |
94 | (eq_attr "type" "prefetch,prefetchx")) | |
95 | "ls3a_mem") | |
96 | ||
97 | (define_insn_reservation "ls3a_store" 0 | |
98 | (and (eq_attr "cpu" "loongson_3a") | |
99 | (eq_attr "type" "store,fpstore,fpidxstore")) | |
100 | "ls3a_mem") | |
101 | ||
102 | ;; All the fp operations can be executed in FALU1. Only fp add, | |
103 | ;; sub, mul, madd can be executed in FALU2. Try FALU2 firstly. | |
104 | (define_insn_reservation "ls3a_fadd" 6 | |
105 | (and (eq_attr "cpu" "loongson_3a") | |
106 | (eq_attr "type" "fadd,fmul,fmadd")) | |
107 | "ls3a_falu2 | ls3a_falu1") | |
108 | ||
109 | (define_insn_reservation "ls3a_fcmp" 2 | |
110 | (and (eq_attr "cpu" "loongson_3a") | |
111 | (eq_attr "type" "fabs,fcmp,fmove,fneg")) | |
112 | "ls3a_falu1") | |
113 | ||
114 | (define_insn_reservation "ls3a_fcvt" 4 | |
115 | (and (eq_attr "cpu" "loongson_3a") | |
116 | (eq_attr "type" "fcvt")) | |
117 | "ls3a_falu1") | |
118 | ||
119 | (define_insn_reservation "ls3a_fdiv_sf" 12 | |
120 | (and (eq_attr "cpu" "loongson_3a") | |
121 | (and (eq_attr "type" "fdiv,frdiv,fsqrt,frsqrt") | |
122 | (eq_attr "mode" "SF"))) | |
123 | "ls3a_falu1 * 12") | |
124 | ||
125 | (define_insn_reservation "ls3a_fdiv_df" 19 | |
126 | (and (eq_attr "cpu" "loongson_3a") | |
127 | (and (eq_attr "type" "fdiv,frdiv,fsqrt,frsqrt") | |
128 | (eq_attr "mode" "DF"))) | |
129 | "ls3a_falu1 * 19") | |
130 | ||
131 | ;; Force single-dispatch for unknown or multi. | |
132 | (define_insn_reservation "ls3a_unknown" 1 | |
133 | (and (eq_attr "cpu" "loongson_3a") | |
408ae786 | 134 | (eq_attr "type" "unknown,multi,atomic,syncloop")) |
a9790f8f | 135 | "ls3a_alu1 + ls3a_alu2 + ls3a_falu1 + ls3a_falu2 + ls3a_mem") |
136 | ||
137 | ;; End of DFA-based pipeline description for loongson_3a |