gcc/config/arm/marvell-pj4.md

   1 ;; Marvell ARM Processor Pipeline Description
   2 ;; Copyright (C) 2010-2013 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" "simple_alu_imm,alu_reg")
  45        (not (eq_attr "conds" "set"))
  46        (eq_attr "insn" "mov,mvn"))
  47                                "pj4_is,(pj4_alu1,pj4_w1+pj4_cp)|(pj4_alu2,pj4_w2+pj4_cp)")
  48
  49 (define_insn_reservation "pj4_alu_e1_conds" 4
  50   (and (eq_attr "tune" "marvell_pj4")
  51        (eq_attr "type" "simple_alu_imm,alu_reg")
  52        (eq_attr "conds" "set")
  53        (eq_attr "insn" "mov,mvn"))
  54                                "pj4_is,(pj4_alu1,pj4_w1+pj4_cp)|(pj4_alu2,pj4_w2+pj4_cp)")
  55
  56 (define_insn_reservation "pj4_alu" 1
  57   (and (eq_attr "tune" "marvell_pj4")
  58        (eq_attr "type" "simple_alu_imm,alu_reg")
  59        (not (eq_attr "conds" "set"))
  60        (not (eq_attr "insn" "mov,mvn")))
  61                                "pj4_is,(pj4_alu1,pj4_w1+pj4_cp)|(pj4_alu2,pj4_w2+pj4_cp)")
  62
  63 (define_insn_reservation "pj4_alu_conds" 4
  64   (and (eq_attr "tune" "marvell_pj4")
  65        (eq_attr "type" "simple_alu_imm,alu_reg")
  66        (eq_attr "conds" "set")
  67        (not (eq_attr "insn" "mov,mvn")))
  68                                "pj4_is,(pj4_alu1,pj4_w1+pj4_cp)|(pj4_alu2,pj4_w2+pj4_cp)")
  69
  70 (define_insn_reservation "pj4_shift" 1
  71   (and (eq_attr "tune" "marvell_pj4")
  72        (eq_attr "type" "alu_shift,alu_shift_reg,simple_alu_shift")
  73        (not (eq_attr "conds" "set"))
  74        (eq_attr "shift" "1"))  "pj4_is,(pj4_alu1,pj4_w1+pj4_cp)|(pj4_alu2,pj4_w2+pj4_cp)")
  75
  76 (define_insn_reservation "pj4_shift_conds" 4
  77   (and (eq_attr "tune" "marvell_pj4")
  78        (eq_attr "type" "alu_shift,alu_shift_reg,simple_alu_shift")
  79        (eq_attr "conds" "set")
  80        (eq_attr "shift" "1"))  "pj4_is,(pj4_alu1,pj4_w1+pj4_cp)|(pj4_alu2,pj4_w2+pj4_cp)")
  81
  82 (define_insn_reservation "pj4_alu_shift" 1
  83   (and (eq_attr "tune" "marvell_pj4")
  84        (not (eq_attr "conds" "set"))
  85        (eq_attr "type" "alu_shift,alu_shift_reg,simple_alu_shift"))
  86                                "pj4_is,(pj4_alu1,nothing,pj4_w1+pj4_cp)|(pj4_alu2,nothing,pj4_w2+pj4_cp)")
  87
  88 (define_insn_reservation "pj4_alu_shift_conds" 4
  89   (and (eq_attr "tune" "marvell_pj4")
  90        (eq_attr "conds" "set")
  91        (eq_attr "type" "alu_shift,alu_shift_reg,simple_alu_shift"))
  92                                "pj4_is,(pj4_alu1,nothing,pj4_w1+pj4_cp)|(pj4_alu2,nothing,pj4_w2+pj4_cp)")
  93
  94 (define_bypass 2 "pj4_alu_shift,pj4_shift"
  95                  "pj4_ir_mul,pj4_ir_div,pj4_core_to_vfp")
  96
  97 (define_insn_reservation "pj4_ir_mul" 3
  98   (and (eq_attr "tune" "marvell_pj4") (eq_attr "type" "mult")) "pj4_is,pj4_mul,nothing*2,pj4_cp")
  99
 100 (define_insn_reservation "pj4_ir_div" 20
 101   (and (eq_attr "tune" "marvell_pj4") (eq_attr "insn" "udiv,sdiv")) "pj4_is,pj4_div*19,pj4_cp")
 102
 103 ;; Branches and calls.
 104
 105 (define_insn_reservation "pj4_branches" 0
 106   (and (eq_attr "tune" "marvell_pj4") (eq_attr "type" "branch")) "pj4_is")
 107
 108 (define_insn_reservation "pj4_calls" 32
 109   (and (eq_attr "tune" "marvell_pj4") (eq_attr "type" "call")) "pj4_is")
 110
 111 ;; Load/store instructions
 112
 113 (define_insn_reservation "pj4_ldr"  3
 114   (and (eq_attr "tune" "marvell_pj4")
 115        (eq_attr "type" "load_byte,load1"))
 116                        "pj4_is,pj4_alu1,nothing*2,pj4_cp")
 117
 118 (define_insn_reservation "pj4_ldrd" 3
 119   (and (eq_attr "tune" "marvell_pj4")
 120        (eq_attr "type" "load2"))
 121                        "pj4_is,pj4_alu1,nothing*2,pj4_cpb")
 122
 123 (define_insn_reservation "pj4_str"  1
 124   (and (eq_attr "tune" "marvell_pj4")
 125        (eq_attr "type" "store1"))
 126                        "pj4_is,pj4_alu1,nothing*2,pj4_cp")
 127
 128 (define_insn_reservation "pj4_strd" 1
 129   (and (eq_attr "tune" "marvell_pj4")
 130        (eq_attr "type" "store2"))
 131                        "pj4_is,pj4_alu1,nothing*2,pj4_cpb")
 132
 133 (define_insn_reservation "pj4_ldm" 4
 134   (and (eq_attr "tune" "marvell_pj4")
 135        (eq_attr "type" "load3,load4")) "pj4_isb,pj4_isb+pj4_alu1,pj4_alu1,nothing,pj4_cp,pj4_cp")
 136
 137 (define_insn_reservation "pj4_stm" 2
 138   (and (eq_attr "tune" "marvell_pj4")
 139        (eq_attr "type" "store3,store4")) "pj4_isb,pj4_isb+pj4_alu1,pj4_alu1,nothing,pj4_cp,pj4_cp")
 140
 141 ;; Loads forward at WR-stage to ALU pipes
 142 (define_bypass 2 "pj4_ldr,pj4_ldrd" "pj4_alu")
 143 (define_bypass 2 "pj4_ldr,pj4_ldrd" "pj4_alu_shift" "arm_no_early_alu_shift_dep")
 144
 145 (define_bypass 4 "pj4_ldr,pj4_ldrd" "pj4_ir_mul,pj4_ir_div,pj4_core_to_vfp")
 146 (define_bypass 5 "pj4_ldm" "pj4_ir_mul,pj4_ir_div,pj4_core_to_vfp")
 147
 148 ;; Loads to stores can back-to-back forward
 149 (define_bypass 1 "pj4_ldr,pj4_ldrd" "pj4_str,pj4_strd" "arm_no_early_store_addr_dep")
 150
 151 ;; PJ4 VFP floating point unit
 152 (define_automaton "pj4_vfp")
 153
 154 (define_cpu_unit "vissue" "pj4_vfp")
 155 (define_cpu_unit "vadd"   "pj4_vfp")
 156 (define_cpu_unit "vmul"   "pj4_vfp")
 157 (define_cpu_unit "vdiv"   "pj4_vfp")
 158 (define_cpu_unit "vfast"  "pj4_vfp")
 159
 160 (define_insn_reservation "pj4_vfp_add"  5
 161   (and (eq_attr "tune" "marvell_pj4")
 162        (eq_attr "type" "fadds,faddd")) "pj4_is,nothing*2,vissue,vadd,nothing*3")
 163
 164 (define_insn_reservation "pj4_vfp_mul"  6
 165   (and (eq_attr "tune" "marvell_pj4")
 166        (eq_attr "type" "fmuls,fmuld")) "pj4_is,nothing*2,vissue,vmul,nothing*4")
 167
 168 (define_insn_reservation "pj4_vfp_divs" 20
 169   (and (eq_attr "tune" "marvell_pj4")
 170        (eq_attr "type" "fdivs"))       "pj4_is,nothing*2,vissue,vdiv*18,nothing")
 171
 172 (define_insn_reservation "pj4_vfp_divd" 34
 173   (and (eq_attr "tune" "marvell_pj4")
 174        (eq_attr "type" "fdivd"))       "pj4_is,nothing*2,vissue,vdiv*32,nothing")
 175
 176 (define_insn_reservation "pj4_vfp_mac"  9
 177   (and (eq_attr "tune" "marvell_pj4")
 178        (eq_attr "type" "fmacs,fmacd"))
 179                        "pj4_is,nothing*2,vissue,vmul,nothing*3,vadd,nothing*3")
 180
 181 (define_bypass 5 "pj4_vfp_mac" "pj4_vfp_mac" "arm_no_early_mul_dep")
 182
 183 (define_insn_reservation "pj4_vfp_cpy"  4
 184   (and (eq_attr "tune" "marvell_pj4")
 185        (eq_attr "type" "fcpys,ffariths,ffarithd,fconsts,fconstd,\
 186                         fcmps,fcmpd,f_cvt"))  "pj4_is,nothing*2,vissue,vfast,nothing*2")
 187
 188 ;; Enlarge latency, and wish that more nondependent insns are
 189 ;; scheduled immediately after VFP load.
 190 (define_insn_reservation "pj4_vfp_load" 4
 191   (and (eq_attr "tune" "marvell_pj4")
 192        (eq_attr "type" "f_loads,f_loadd"))    "pj4_isb,pj4_alu1,nothing,vissue,pj4_cp")
 193
 194 (define_insn_reservation "pj4_vfp_store" 1
 195   (and (eq_attr "tune" "marvell_pj4")
 196        (eq_attr "type" "f_stores,f_stored"))  "pj4_isb,pj4_alu1,nothing,vissue,pj4_cp")
 197
 198 (define_insn_reservation "pj4_vfp_to_core" 7
 199   (and (eq_attr "tune" "marvell_pj4")
 200        (eq_attr "type" "f_2_r,f_flag"))       "pj4_isb,nothing,nothing,vissue,vfast,nothing*2")
 201
 202 (define_insn_reservation "pj4_core_to_vfp" 2
 203   (and (eq_attr "tune" "marvell_pj4")
 204        (eq_attr "type" "r_2_f"))              "pj4_isb,pj4_alu1,pj4_w1,vissue,pj4_cp")
 205