1 ;; Scheduling description for Niagara.
2 ;; Copyright (C) 2006-2020 Free Software Foundation, Inc.
4 ;; This file is part of GCC.
6 ;; GCC is free software; you can redistribute it and/or modify
7 ;; it under the terms of the GNU General Public License as published by
8 ;; the Free Software Foundation; either version 3, or (at your option)
11 ;; GCC is distributed in the hope that it will be useful,
12 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
13 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 ;; GNU General Public License for more details.
16 ;; You should have received a copy of the GNU General Public License
17 ;; along with GCC; see the file COPYING3. If not see
18 ;; <http://www.gnu.org/licenses/>.
20 ;; Niagara is a single-issue processor.
22 (define_automaton "niagara_0")
24 (define_cpu_unit "niag_pipe" "niagara_0")
26 (define_insn_reservation "niag_5cycle" 5
27 (and (eq_attr "cpu" "niagara")
28 (eq_attr "type" "multi,flushw,iflush,trap"))
31 (define_insn_reservation "niag_4cycle" 4
32 (and (eq_attr "cpu" "niagara")
33 (eq_attr "type" "savew"))
36 /* Most basic operations are single-cycle. */
37 (define_insn_reservation "niag_ialu" 1
38 (and (eq_attr "cpu" "niagara")
39 (eq_attr "type" "ialu,shift,compare,cmove"))
42 (define_insn_reservation "niag_imul" 11
43 (and (eq_attr "cpu" "niagara")
44 (eq_attr "type" "imul"))
47 (define_insn_reservation "niag_idiv" 72
48 (and (eq_attr "cpu" "niagara")
49 (eq_attr "type" "idiv"))
52 (define_insn_reservation "niag_branch" 3
53 (and (eq_attr "cpu" "niagara")
54 (eq_attr "type" "call,sibcall,call_no_delay_slot,uncond_branch,branch"))
57 (define_insn_reservation "niag_3cycle_load" 3
58 (and (eq_attr "cpu" "niagara")
59 (eq_attr "type" "load"))
62 (define_insn_reservation "niag_9cycle_load" 9
63 (and (eq_attr "cpu" "niagara")
64 (eq_attr "type" "fpload"))
67 (define_insn_reservation "niag_1cycle_store" 1
68 (and (eq_attr "cpu" "niagara")
69 (eq_attr "type" "store"))
72 (define_insn_reservation "niag_8cycle_store" 8
73 (and (eq_attr "cpu" "niagara")
74 (eq_attr "type" "fpstore"))
77 /* Things incorrectly modelled here:
78 * FPADD{s,d}: 26 cycles
79 * FPSUB{s,d}: 26 cycles
81 * F{s,d}TO{s,d}: 26 cycles
82 * F{s,d}TO{i,x}: 26 cycles
85 (define_insn_reservation "niag_fmov" 8
86 (and (eq_attr "cpu" "niagara")
87 (eq_attr "type" "fpmove,fpcmove,fpcrmove"))
90 (define_insn_reservation "niag_fpcmp" 26
91 (and (eq_attr "cpu" "niagara")
92 (eq_attr "type" "fpcmp"))
95 (define_insn_reservation "niag_fmult" 29
96 (and (eq_attr "cpu" "niagara")
97 (eq_attr "type" "fpmul"))
100 (define_insn_reservation "niag_fdivs" 54
101 (and (eq_attr "cpu" "niagara")
102 (eq_attr "type" "fpdivs"))
105 (define_insn_reservation "niag_fdivd" 83
106 (and (eq_attr "cpu" "niagara")
107 (eq_attr "type" "fpdivd"))
110 /* Things incorrectly modelled here:
111 * FPADD{16,32}: 10 cycles
112 * FPSUB{16,32}: 10 cycles
113 * FALIGNDATA: 10 cycles
115 (define_insn_reservation "niag_vis" 8
116 (and (eq_attr "cpu" "niagara")
117 (eq_attr "type" "fga,visl,viscmp,vismv,fgm_pack,fgm_mul,pdist,edge,edgen,gsr,array,bmask"))