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bcaf571c | 1 | ;; Generic DFA-based pipeline description for LoongArch targets |
a945c346 | 2 | ;; Copyright (C) 2021-2024 Free Software Foundation, Inc. |
bcaf571c | 3 | ;; Contributed by Loongson Ltd. |
4 | ;; Based on MIPS target for GNU compiler. | |
5 | ||
6 | ;; This file is part of GCC. | |
7 | ||
8 | ;; GCC is free software; you can redistribute it and/or modify it | |
9 | ;; under the terms of the GNU General Public License as published | |
10 | ;; by the Free Software Foundation; either version 3, or (at your | |
11 | ;; option) any later version. | |
12 | ||
13 | ;; GCC is distributed in the hope that it will be useful, but WITHOUT | |
14 | ;; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | |
15 | ;; or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public | |
16 | ;; License for more details. | |
17 | ||
18 | ;; You should have received a copy of the GNU General Public License | |
19 | ;; along with GCC; see the file COPYING3. If not see | |
20 | ;; <http://www.gnu.org/licenses/>. | |
21 | ||
22 | (define_automaton "alu,imuldiv") | |
23 | ||
24 | (define_cpu_unit "alu" "alu") | |
25 | (define_cpu_unit "imuldiv" "imuldiv") | |
26 | ||
27 | ;; Ghost instructions produce no real code. | |
28 | ;; They exist purely to express an effect on dataflow. | |
29 | (define_insn_reservation "ghost" 0 | |
30 | (eq_attr "type" "ghost") | |
31 | "nothing") | |
32 | ||
33 | (define_insn_reservation "generic_alu" 1 | |
34 | (eq_attr "type" "unknown,prefetch,prefetchx,condmove,const,arith, | |
35 | shift,slt,clz,trap,multi,nop,logical,signext,move") | |
36 | "alu") | |
37 | ||
38 | (define_insn_reservation "generic_load" 3 | |
39 | (eq_attr "type" "load,fpload,fpidxload") | |
40 | "alu") | |
41 | ||
42 | (define_insn_reservation "generic_store" 1 | |
43 | (eq_attr "type" "store,fpstore,fpidxstore") | |
44 | "alu") | |
45 | ||
46 | (define_insn_reservation "generic_xfer" 2 | |
47 | (eq_attr "type" "mftg,mgtf") | |
48 | "alu") | |
49 | ||
50 | (define_insn_reservation "generic_branch" 1 | |
51 | (eq_attr "type" "branch,jump,call") | |
52 | "alu") | |
53 | ||
54 | (define_insn_reservation "generic_imul" 17 | |
55 | (eq_attr "type" "imul") | |
56 | "imuldiv*17") | |
57 | ||
58 | (define_insn_reservation "generic_fcvt" 1 | |
59 | (eq_attr "type" "fcvt") | |
60 | "alu") | |
61 | ||
62 | (define_insn_reservation "generic_fmove" 2 | |
63 | (eq_attr "type" "fabs,fneg,fmove") | |
64 | "alu") | |
65 | ||
66 | (define_insn_reservation "generic_fcmp" 3 | |
67 | (eq_attr "type" "fcmp") | |
68 | "alu") | |
69 | ||
70 | (define_insn_reservation "generic_fadd" 4 | |
71 | (eq_attr "type" "fadd") | |
72 | "alu") | |
73 | ||
74 | (define_insn_reservation "generic_fmul_single" 7 | |
75 | (and (eq_attr "type" "fmul,fmadd") | |
76 | (eq_attr "mode" "SF")) | |
77 | "alu") | |
78 | ||
79 | (define_insn_reservation "generic_fmul_double" 8 | |
80 | (and (eq_attr "type" "fmul,fmadd") | |
81 | (eq_attr "mode" "DF")) | |
82 | "alu") | |
83 | ||
84 | (define_insn_reservation "generic_fdiv_single" 23 | |
85 | (and (eq_attr "type" "fdiv,frdiv") | |
86 | (eq_attr "mode" "SF")) | |
87 | "alu") | |
88 | ||
89 | (define_insn_reservation "generic_fdiv_double" 36 | |
90 | (and (eq_attr "type" "fdiv,frdiv") | |
91 | (eq_attr "mode" "DF")) | |
92 | "alu") | |
93 | ||
94 | (define_insn_reservation "generic_fsqrt_single" 54 | |
95 | (and (eq_attr "type" "fsqrt,frsqrt") | |
96 | (eq_attr "mode" "SF")) | |
97 | "alu") | |
98 | ||
99 | (define_insn_reservation "generic_fsqrt_double" 112 | |
100 | (and (eq_attr "type" "fsqrt,frsqrt") | |
101 | (eq_attr "mode" "DF")) | |
102 | "alu") | |
103 | ||
104 | (define_insn_reservation "generic_atomic" 10 | |
105 | (eq_attr "type" "atomic") | |
106 | "alu") | |
107 | ||
108 | ;; Sync loop consists of (in order) | |
109 | ;; (1) optional sync, | |
110 | ;; (2) LL instruction, | |
111 | ;; (3) branch and 1-2 ALU instructions, | |
112 | ;; (4) SC instruction, | |
113 | ;; (5) branch and ALU instruction. | |
114 | ;; The net result of this reservation is a big delay with a flush of | |
115 | ;; ALU pipeline. | |
116 | (define_insn_reservation "generic_sync_loop" 40 | |
117 | (eq_attr "type" "syncloop") | |
118 | "alu*39") |