i6400.md revision 1.1 
1;; DFA-based pipeline description for I6400.
2;;
3;; Copyright (C) 2015-2016 Free Software Foundation, Inc.
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(define_automaton "i6400_int_pipe, i6400_mdu_pipe, i6400_fpu_short_pipe,
22		   i6400_fpu_long_pipe")
23
24(define_cpu_unit "i6400_gpmuldiv" "i6400_mdu_pipe")
25(define_cpu_unit "i6400_agen, i6400_alu1, i6400_lsu" "i6400_int_pipe")
26(define_cpu_unit "i6400_control, i6400_ctu, i6400_alu0" "i6400_int_pipe")
27
28;; Short FPU pipeline.
29(define_cpu_unit "i6400_fpu_short" "i6400_fpu_short_pipe")
30
31;; Long FPU pipeline.
32(define_cpu_unit "i6400_fpu_long, i6400_fpu_apu" "i6400_fpu_long_pipe")
33
34(define_reservation "i6400_control_ctu" "i6400_control, i6400_ctu")
35(define_reservation "i6400_control_alu0" "i6400_control, i6400_alu0")
36(define_reservation "i6400_agen_lsu" "i6400_agen, i6400_lsu")
37(define_reservation "i6400_agen_alu1" "i6400_agen, i6400_alu1")
38
39;;
40;; FPU pipe
41;;
42
43;; fabs, fneg
44(define_insn_reservation "i6400_fpu_fabs" 1
45  (and (eq_attr "cpu" "i6400")
46       (eq_attr "type" "fabs,fneg,fmove"))
47  "i6400_fpu_short, i6400_fpu_apu")
48
49;; fadd, fsub, fcvt
50(define_insn_reservation "i6400_fpu_fadd" 4
51  (and (eq_attr "cpu" "i6400")
52       (eq_attr "type" "fadd, fcvt"))
53  "i6400_fpu_long, i6400_fpu_apu")
54
55;; fmul
56(define_insn_reservation "i6400_fpu_fmul" 5
57  (and (eq_attr "cpu" "i6400")
58       (eq_attr "type" "fmul"))
59  "i6400_fpu_long, i6400_fpu_apu")
60
61;; div, sqrt (Double Precision)
62(define_insn_reservation "i6400_fpu_div_df" 30
63  (and (eq_attr "cpu" "i6400")
64       (and (eq_attr "mode" "DF")
65	    (eq_attr "type" "fdiv,frdiv,fsqrt,frsqrt")))
66  "i6400_fpu_long+i6400_fpu_apu*30")
67
68;; div, sqrt (Single Precision)
69(define_insn_reservation "i6400_fpu_div_sf" 22
70  (and (eq_attr "cpu" "i6400")
71       (eq_attr "type" "fdiv,frdiv,fsqrt,frsqrt"))
72  "i6400_fpu_long+i6400_fpu_apu*22")
73
74;;
75;; Integer pipe
76;;
77
78;; and, lui, shifts, seb, seh
79(define_insn_reservation "i6400_int_logical" 1
80  (and (eq_attr "cpu" "i6400")
81       (eq_attr "move_type" "logical,const,andi,sll0,signext"))
82  "i6400_control_alu0 | i6400_agen_alu1")
83
84;; addi, addiu, ori, xori, add, addu, sub, nor
85(define_insn_reservation "i6400_int_add" 1
86  (and (eq_attr "cpu" "i6400")
87       (eq_attr "alu_type" "add,sub,or,xor,nor"))
88  "i6400_control_alu0 | i6400_agen_alu1")
89
90;; shifts, clo, clz, cond move, arith
91(define_insn_reservation "i6400_int_arith" 1
92  (and (eq_attr "cpu" "i6400")
93       (eq_attr "type" "shift,slt,move,clz,condmove,arith"))
94  "i6400_control_alu0 | i6400_agen_alu1")
95
96;; nop
97(define_insn_reservation "i6400_int_nop" 0
98  (and (eq_attr "cpu" "i6400")
99       (eq_attr "type" "nop"))
100  "nothing")
101
102;; mult, multu, mul
103(define_insn_reservation "i6400_int_mult" 4
104  (and (eq_attr "cpu" "i6400")
105       (eq_attr "type" "imul3,imul"))
106  "i6400_gpmuldiv")
107
108;; divide
109(define_insn_reservation "i6400_int_div" 32
110  (and (eq_attr "cpu" "i6400")
111       (eq_attr "type" "idiv"))
112  "i6400_gpmuldiv*32")
113
114;; Load lb, lbu, lh, lhu, lq, lw, lw_i2f, lwxs
115(define_insn_reservation "i6400_int_load" 3
116  (and (eq_attr "cpu" "i6400")
117       (eq_attr "move_type" "load"))
118  "i6400_agen_lsu")
119
120;; store
121(define_insn_reservation "i6400_int_store" 1
122  (and (eq_attr "cpu" "i6400")
123       (eq_attr "move_type" "store"))
124  "i6400_agen_lsu")
125
126;; prefetch
127(define_insn_reservation "i6400_int_prefetch" 3
128  (and (eq_attr "cpu" "i6400")
129       (eq_attr "type" "prefetch"))
130  "i6400_agen_lsu")
131
132;; branch and jump
133(define_insn_reservation "i6400_int_branch" 1
134  (and (eq_attr "cpu" "i6400")
135       (eq_attr "type" "branch,jump"))
136  "i6400_control_ctu")
137
138;; call
139(define_insn_reservation "i6400_int_call" 1
140  (and (eq_attr "cpu" "i6400")
141       (eq_attr "jal" "indirect,direct"))
142  "i6400_control_ctu")
143