gcc/config/arm/marvell-pj4.md

   1 ;; Marvell ARM Processor Pipeline Description
   2 ;; Copyright (C) 2010-2017 Free Software Foundation, Inc.
   3 ;; Contributed by Marvell.
   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 ;; Pipeline description for the Marvell PJ4, aka "Flareon".
  22 (define_automaton "pj4")
  23
  24 ;; Issue resources
  25 (define_cpu_unit    "pj4_is1,pj4_is2"        "pj4")
  26 (define_reservation "pj4_is"             "(pj4_is1|pj4_is2)")
  27 (define_reservation "pj4_isb"            "(pj4_is1+pj4_is2)")
  28
  29 ;; Functional units
  30 (define_cpu_unit "pj4_alu1,pj4_alu2,pj4_mul,pj4_div" "pj4")
  31
  32 ;; Completion ports
  33 (define_cpu_unit "pj4_w1,pj4_w2"             "pj4")
  34
  35 ;; Complete/Retire control
  36 (define_cpu_unit    "pj4_c1,pj4_c2"          "pj4")
  37 (define_reservation "pj4_cp"             "(pj4_c1|pj4_c2)")
  38 (define_reservation "pj4_cpb"            "(pj4_c1+pj4_c2)")
  39
  40 ;; Integer arithmetic instructions
  41
  42 (define_insn_reservation "pj4_alu_e1" 1
  43   (and (eq_attr "tune" "marvell_pj4")
  44        (eq_attr "type" "mov_imm,mov_reg,mvn_imm,mvn_reg")
  45        (not (eq_attr "conds" "set")))
  46                                "pj4_is,(pj4_alu1,pj4_w1+pj4_cp)|(pj4_alu2,pj4_w2+pj4_cp)")
  47
  48 (define_insn_reservation "pj4_alu_e1_conds" 4
  49   (and (eq_attr "tune" "marvell_pj4")
  50        (eq_attr "type" "mov_imm,mov_reg,mvn_imm,mvn_reg")
  51        (eq_attr "conds" "set"))
  52                                "pj4_is,(pj4_alu1,pj4_w1+pj4_cp)|(pj4_alu2,pj4_w2+pj4_cp)")
  53
  54 (define_insn_reservation "pj4_alu" 1
  55   (and (eq_attr "tune" "marvell_pj4")
  56        (eq_attr "type" "alu_imm,alus_imm,alu_sreg,alus_sreg,\
  57                         logic_imm,logics_imm,logic_reg,logics_reg,\
  58                         adc_imm,adcs_imm,adc_reg,adcs_reg,\
  59                         adr,bfm,rev,alu_dsp_reg,\
  60                         shift_imm,shift_reg")
  61        (not (eq_attr "conds" "set")))
  62                                "pj4_is,(pj4_alu1,pj4_w1+pj4_cp)|(pj4_alu2,pj4_w2+pj4_cp)")
  63
  64 (define_insn_reservation "pj4_alu_conds" 4
  65   (and (eq_attr "tune" "marvell_pj4")
  66        (eq_attr "type" "alu_imm,alus_imm,alu_sreg,alus_sreg,\
  67                         logic_imm,logics_imm,logic_reg,logics_reg,\
  68                         adc_imm,adcs_imm,adc_reg,adcs_reg,\
  69                         adr,bfm,rev,alu_dsp_reg,\
  70                         shift_imm,shift_reg")
  71        (eq_attr "conds" "set"))
  72                                "pj4_is,(pj4_alu1,pj4_w1+pj4_cp)|(pj4_alu2,pj4_w2+pj4_cp)")
  73
  74 (define_insn_reservation "pj4_shift" 1
  75   (and (eq_attr "tune" "marvell_pj4")
  76        (eq_attr "type" "alu_shift_imm,logic_shift_imm,\
  77                         alus_shift_imm,logics_shift_imm,\
  78                         alu_shift_reg,logic_shift_reg,\
  79                         alus_shift_reg,logics_shift_reg,\
  80                         extend,\
  81                         mov_shift,mvn_shift,mov_shift_reg,mvn_shift_reg")
  82        (not (eq_attr "conds" "set"))
  83        (eq_attr "shift" "1"))  "pj4_is,(pj4_alu1,pj4_w1+pj4_cp)|(pj4_alu2,pj4_w2+pj4_cp)")
  84
  85 (define_insn_reservation "pj4_shift_conds" 4
  86   (and (eq_attr "tune" "marvell_pj4")
  87        (eq_attr "type" "alu_shift_imm,logic_shift_imm,\
  88                         alus_shift_imm,logics_shift_imm,\
  89                         alu_shift_reg,logic_shift_reg,\
  90                         alus_shift_reg,logics_shift_reg,\
  91                         extend,\
  92                         mov_shift,mvn_shift,mov_shift_reg,mvn_shift_reg")
  93        (eq_attr "conds" "set")
  94        (eq_attr "shift" "1"))  "pj4_is,(pj4_alu1,pj4_w1+pj4_cp)|(pj4_alu2,pj4_w2+pj4_cp)")
  95
  96 (define_insn_reservation "pj4_alu_shift" 1
  97   (and (eq_attr "tune" "marvell_pj4")
  98        (not (eq_attr "conds" "set"))
  99        (eq_attr "type" "alu_shift_imm,logic_shift_imm,\
 100                         alus_shift_imm,logics_shift_imm,\
 101                         alu_shift_reg,logic_shift_reg,\
 102                         alus_shift_reg,logics_shift_reg,\
 103                         extend,\
 104                         mov_shift,mvn_shift,mov_shift_reg,mvn_shift_reg"))
 105                                "pj4_is,(pj4_alu1,nothing,pj4_w1+pj4_cp)|(pj4_alu2,nothing,pj4_w2+pj4_cp)")
 106
 107 (define_insn_reservation "pj4_alu_shift_conds" 4
 108   (and (eq_attr "tune" "marvell_pj4")
 109        (eq_attr "conds" "set")
 110        (eq_attr "type" "alu_shift_imm,logic_shift_imm,alus_shift_imm,logics_shift_imm,\
 111                         alu_shift_reg,logic_shift_reg,alus_shift_reg,logics_shift_reg,\
 112                         extend,\
 113                         mov_shift,mvn_shift,mov_shift_reg,mvn_shift_reg"))
 114                                "pj4_is,(pj4_alu1,nothing,pj4_w1+pj4_cp)|(pj4_alu2,nothing,pj4_w2+pj4_cp)")
 115
 116 (define_bypass 2 "pj4_alu_shift,pj4_shift"
 117                  "pj4_ir_mul,pj4_ir_div,pj4_core_to_vfp")
 118
 119 (define_insn_reservation "pj4_ir_mul" 3
 120   (and (eq_attr "tune" "marvell_pj4")
 121        (ior (eq_attr "mul32" "yes")
 122             (eq_attr "mul64" "yes")))
 123                      "pj4_is,pj4_mul,nothing*2,pj4_cp")
 124
 125 (define_insn_reservation "pj4_ir_div" 20
 126   (and (eq_attr "tune" "marvell_pj4")
 127        (eq_attr "type" "udiv,sdiv")) "pj4_is,pj4_div*19,pj4_cp")
 128
 129 ;; Branches and calls.
 130
 131 (define_insn_reservation "pj4_branches" 0
 132   (and (eq_attr "tune" "marvell_pj4") (eq_attr "type" "branch")) "pj4_is")
 133
 134 (define_insn_reservation "pj4_calls" 32
 135   (and (eq_attr "tune" "marvell_pj4") (eq_attr "type" "call")) "pj4_is")
 136
 137 ;; Load/store instructions
 138
 139 (define_insn_reservation "pj4_ldr"  3
 140   (and (eq_attr "tune" "marvell_pj4")
 141        (eq_attr "type" "load_byte,load1"))
 142                        "pj4_is,pj4_alu1,nothing*2,pj4_cp")
 143
 144 (define_insn_reservation "pj4_ldrd" 3
 145   (and (eq_attr "tune" "marvell_pj4")
 146        (eq_attr "type" "load2"))
 147                        "pj4_is,pj4_alu1,nothing*2,pj4_cpb")
 148
 149 (define_insn_reservation "pj4_str"  1
 150   (and (eq_attr "tune" "marvell_pj4")
 151        (eq_attr "type" "store1"))
 152                        "pj4_is,pj4_alu1,nothing*2,pj4_cp")
 153
 154 (define_insn_reservation "pj4_strd" 1
 155   (and (eq_attr "tune" "marvell_pj4")
 156        (eq_attr "type" "store2"))
 157                        "pj4_is,pj4_alu1,nothing*2,pj4_cpb")
 158
 159 (define_insn_reservation "pj4_ldm" 4
 160   (and (eq_attr "tune" "marvell_pj4")
 161        (eq_attr "type" "load3,load4")) "pj4_isb,pj4_isb+pj4_alu1,pj4_alu1,nothing,pj4_cp,pj4_cp")
 162
 163 (define_insn_reservation "pj4_stm" 2
 164   (and (eq_attr "tune" "marvell_pj4")
 165        (eq_attr "type" "store3,store4")) "pj4_isb,pj4_isb+pj4_alu1,pj4_alu1,nothing,pj4_cp,pj4_cp")
 166
 167 ;; Loads forward at WR-stage to ALU pipes
 168 (define_bypass 2 "pj4_ldr,pj4_ldrd" "pj4_alu")
 169 (define_bypass 2 "pj4_ldr,pj4_ldrd" "pj4_alu_shift" "arm_no_early_alu_shift_dep")
 170
 171 (define_bypass 4 "pj4_ldr,pj4_ldrd" "pj4_ir_mul,pj4_ir_div,pj4_core_to_vfp")
 172 (define_bypass 5 "pj4_ldm" "pj4_ir_mul,pj4_ir_div,pj4_core_to_vfp")
 173
 174 ;; Loads to stores can back-to-back forward
 175 (define_bypass 1 "pj4_ldr,pj4_ldrd" "pj4_str,pj4_strd" "arm_no_early_store_addr_dep")
 176
 177 ;; PJ4 VFP floating point unit
 178 (define_automaton "pj4_vfp")
 179
 180 (define_cpu_unit "vissue" "pj4_vfp")
 181 (define_cpu_unit "vadd"   "pj4_vfp")
 182 (define_cpu_unit "vmul"   "pj4_vfp")
 183 (define_cpu_unit "vdiv"   "pj4_vfp")
 184 (define_cpu_unit "vfast"  "pj4_vfp")
 185
 186 (define_insn_reservation "pj4_vfp_add"  5
 187   (and (eq_attr "tune" "marvell_pj4")
 188        (eq_attr "type" "fadds,faddd")) "pj4_is,nothing*2,vissue,vadd,nothing*3")
 189
 190 (define_insn_reservation "pj4_vfp_mul"  6
 191   (and (eq_attr "tune" "marvell_pj4")
 192        (eq_attr "type" "fmuls,fmuld")) "pj4_is,nothing*2,vissue,vmul,nothing*4")
 193
 194 (define_insn_reservation "pj4_vfp_divs" 20
 195   (and (eq_attr "tune" "marvell_pj4")
 196        (eq_attr "type" "fdivs, fsqrts"))       "pj4_is,nothing*2,vissue,vdiv*18,nothing")
 197
 198 (define_insn_reservation "pj4_vfp_divd" 34
 199   (and (eq_attr "tune" "marvell_pj4")
 200        (eq_attr "type" "fdivd, fsqrtd"))       "pj4_is,nothing*2,vissue,vdiv*32,nothing")
 201
 202 (define_insn_reservation "pj4_vfp_mac"  9
 203   (and (eq_attr "tune" "marvell_pj4")
 204        (eq_attr "type" "fmacs,fmacd"))
 205                        "pj4_is,nothing*2,vissue,vmul,nothing*3,vadd,nothing*3")
 206
 207 (define_bypass 5 "pj4_vfp_mac" "pj4_vfp_mac" "arm_no_early_mul_dep")
 208
 209 (define_insn_reservation "pj4_vfp_cpy"  4
 210   (and (eq_attr "tune" "marvell_pj4")
 211        (eq_attr "type" "fmov,ffariths,ffarithd,fconsts,fconstd,\
 212                         fcmps,fcmpd,f_cvt,f_cvtf2i,f_cvti2f"))
 213 "pj4_is,nothing*2,vissue,vfast,nothing*2")
 214
 215 ;; Enlarge latency, and wish that more nondependent insns are
 216 ;; scheduled immediately after VFP load.
 217 (define_insn_reservation "pj4_vfp_load" 4
 218   (and (eq_attr "tune" "marvell_pj4")
 219        (eq_attr "type" "f_loads,f_loadd"))    "pj4_isb,pj4_alu1,nothing,vissue,pj4_cp")
 220
 221 (define_insn_reservation "pj4_vfp_store" 1
 222   (and (eq_attr "tune" "marvell_pj4")
 223        (eq_attr "type" "f_stores,f_stored"))  "pj4_isb,pj4_alu1,nothing,vissue,pj4_cp")
 224
 225 (define_insn_reservation "pj4_vfp_to_core" 7
 226   (and (eq_attr "tune" "marvell_pj4")
 227        (eq_attr "type" "f_mrc,f_mrrc,f_flag")) "pj4_isb,nothing,nothing,vissue,vfast,nothing*2")
 228
 229 (define_insn_reservation "pj4_core_to_vfp" 2
 230   (and (eq_attr "tune" "marvell_pj4")
 231        (eq_attr "type" "f_mcr,f_mcrr")) "pj4_isb,pj4_alu1,pj4_w1,vissue,pj4_cp")
 232