1 ;; ARM Cortex-M7 pipeline description
2 ;; Copyright (C) 2014-2025 Free Software Foundation, Inc.
4 ;; This file is part of GCC.
6 ;; GCC is free software; you can redistribute it and/or modify it
7 ;; 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, but
12 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
13 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 ;; 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 (define_automaton "cortex_m7")
22 ;; We model the dual-issue constraints of this core with
25 (define_cpu_unit "cm7_i0, cm7_i1" "cortex_m7")
26 (define_cpu_unit "cm7_a0, cm7_a1" "cortex_m7")
27 (define_cpu_unit "cm7_branch,cm7_wb,cm7_ext,cm7_shf" "cortex_m7")
28 (define_cpu_unit "cm7_lsu" "cortex_m7")
29 (define_cpu_unit "cm7_mac" "cortex_m7")
30 (define_cpu_unit "cm7_fpu" "cortex_m7")
32 (define_reservation "cm7_all_units"
33 "cm7_i0+cm7_i1+cm7_a0+cm7_a1+cm7_branch\
34 +cm7_wb+cm7_ext+cm7_shf+cm7_lsu+cm7_mac\
37 ;; Simple alu instruction without inline shift operation.
38 (define_insn_reservation "cortex_m7_alu_simple" 2
39 (and (eq_attr "tune" "cortexm7")
40 (eq_attr "type" "alu_imm,alus_imm,logic_imm,logics_imm,\
41 alu_sreg,alus_sreg,logic_reg,logics_reg,\
42 adc_imm,adcs_imm,adc_reg,adcs_reg,\
45 mov_imm,mov_reg,mvn_imm,mvn_reg,\
46 mov_shift_reg,mov_shift,\
47 mvn_shift,mvn_shift_reg,\
48 logic_shift_imm,logics_shift_imm,\
49 alu_shift_reg,alus_shift_reg,\
50 logic_shift_reg,logics_shift_reg,\
51 mrs,clz,f_mcr,f_mrc,multiple"))
52 "cm7_i0|cm7_i1,cm7_a0|cm7_a1")
54 ;; Simple alu with inline shift operation.
55 (define_insn_reservation "cortex_m7_alu_shift" 2
56 (and (eq_attr "tune" "cortexm7")
57 (eq_attr "type" "alu_shift_imm_lsl_1to4,alu_shift_imm_other,alus_shift_imm"))
58 "cm7_i0|cm7_i1,(cm7_a0|cm7_a1)+cm7_shf+cm7_branch")
60 ;; Only one ALU can be used for DSP instructions.
61 (define_insn_reservation "cortex_m7_dsp" 2
62 (and (eq_attr "tune" "cortexm7")
63 (eq_attr "type" "alu_dsp_reg,smlaxy,smlalxy,smulxy"))
64 "cm7_i0|cm7_i1,cm7_a0")
66 ;; The multiply instructions.
67 (define_insn_reservation "cortex_m7_multiply" 2
68 (and (eq_attr "tune" "cortexm7")
69 (eq_attr "type" "mul,muls,umull,smull"))
70 "cm7_i0|cm7_i1,(cm7_a0|cm7_a1)+cm7_wb")
72 (define_insn_reservation "cortex_m7_idiv" 4
73 (and (eq_attr "tune" "cortexm7")
74 (eq_attr "type" "sdiv,udiv"))
77 (define_insn_reservation "cortex_m7_alu_extend" 2
78 (and (eq_attr "tune" "cortexm7")
79 (eq_attr "type" "extend"))
80 "cm7_i0|cm7_i1,(cm7_a0|cm7_a1)+cm7_ext+cm7_branch")
82 (define_insn_reservation "cortex_m7_mac" 2
83 (and (eq_attr "tune" "cortexm7")
84 (eq_attr "type" "mla,mlas"))
85 "cm7_i0|cm7_i1,cm7_mac+cm7_wb")
87 ;; The branch instructions.
88 (define_insn_reservation "cortex_m7_branch" 0
89 (and (eq_attr "tune" "cortexm7")
90 (eq_attr "type" "branch,call"))
91 "cm7_i0|cm7_i1,cm7_branch")
93 ;; The load instructions.
94 (define_insn_reservation "cortex_m7_load1" 2
95 (and (eq_attr "tune" "cortexm7")
96 (eq_attr "type" "load_byte, load_4"))
97 "cm7_i0|cm7_i1,cm7_lsu")
99 (define_insn_reservation "cortex_m7_load2" 2
100 (and (eq_attr "tune" "cortexm7")
101 (eq_attr "type" "load_8"))
104 (define_insn_reservation "cortex_m7_loadm" 2
105 (and (eq_attr "tune" "cortexm7")
106 (eq_attr "type" "load_12,load_16"))
109 ;; The store instructions.
110 (define_insn_reservation "cortex_m7_store1" 0
111 (and (eq_attr "tune" "cortexm7")
112 (eq_attr "type" "store_4"))
113 "cm7_i0|cm7_i1,cm7_lsu+cm7_wb")
115 (define_insn_reservation "cortex_m7_store2" 0
116 (and (eq_attr "tune" "cortexm7")
117 (eq_attr "type" "store_8"))
120 (define_insn_reservation "cortex_m7_storem" 0
121 (and (eq_attr "tune" "cortexm7")
122 (eq_attr "type" "store_12,store_16"))
125 ;; The FPU instructions.
126 (define_insn_reservation "cortex_m7_fpalu" 3
127 (and (eq_attr "tune" "cortexm7")
128 (eq_attr "type" "ffariths,ffarithd,fadds,faddd,fmov,fconsts,\
129 fconstd,fcmpd,f_cvt,f_cvtf2i,f_cvti2f, fcmps,\
131 "cm7_i0|cm7_i1,cm7_fpu")
133 (define_insn_reservation "cortex_m7_fmacs" 6
134 (and (eq_attr "tune" "cortexm7")
135 (eq_attr "type" "fmacs,ffmas"))
136 "cm7_i0|cm7_i1,cm7_fpu")
138 (define_insn_reservation "cortex_m7_fdivs" 16
139 (and (eq_attr "tune" "cortexm7")
140 (eq_attr "type" "fdivs, fsqrts"))
141 "cm7_i0|cm7_i1, cm7_fpu*5")
143 (define_insn_reservation "cortex_m7_f_loads" 2
144 (and (eq_attr "tune" "cortexm7")
145 (eq_attr "type" "f_loads"))
146 "cm7_i0|cm7_i1, cm7_lsu")
148 (define_insn_reservation "cortex_m7_f_stores" 0
149 (and (eq_attr "tune" "cortexm7")
150 (eq_attr "type" "f_stores"))
151 "cm7_i0|cm7_i1, cm7_lsu+cm7_wb")
153 (define_insn_reservation "cortex_m7_fmuld" 6
154 (and (eq_attr "tune" "cortexm7")
155 (eq_attr "type" "fmuld"))
156 "cm7_i0|cm7_i1,cm7_fpu*3")
158 (define_insn_reservation "cortex_m7_fmacd" 10
159 (and (eq_attr "tune" "cortexm7")
160 (eq_attr "type" "fmacd,ffmad"))
161 "cm7_i0|cm7_i1,cm7_fpu*4")
163 (define_insn_reservation "cortex_m7_fdivd" 31
164 (and (eq_attr "tune" "cortexm7")
165 (eq_attr "type" "fdivd,fsqrtd"))
166 "cm7_i0|cm7_i1,cm7_fpu*4")
168 (define_insn_reservation "cortex_m7_f_loadd" 3
169 (and (eq_attr "tune" "cortexm7")
170 (eq_attr "type" "f_loadd"))
173 (define_insn_reservation "cortex_m7_f_stored" 0
174 (and (eq_attr "tune" "cortexm7")
175 (eq_attr "type" "f_stored"))
178 (define_insn_reservation "cortex_m7_f_mcr" 1
179 (and (eq_attr "tune" "cortexm7")
180 (eq_attr "type" "f_mcrr,f_mrrc"))