gcc/config/rs6000/e500mc.md

   1 ;; Pipeline description for Motorola PowerPC e500mc core.
   2 ;;   Copyright (C) 2008-2018 Free Software Foundation, Inc.
   3 ;;   Contributed by Edmar Wienskoski (edmar@freescale.com)
   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 ;; e500mc 32-bit SU(2), LSU, FPU, BPU
  22 ;; Max issue 3 insns/clock cycle (includes 1 branch)
  23 ;; FP is half clocked, timings of other instructions are as in the e500v2.
  24
  25 (define_automaton "e500mc_most,e500mc_long,e500mc_retire")
  26 (define_cpu_unit "e500mc_decode_0,e500mc_decode_1" "e500mc_most")
  27 (define_cpu_unit "e500mc_issue_0,e500mc_issue_1"   "e500mc_most")
  28 (define_cpu_unit "e500mc_retire_0,e500mc_retire_1" "e500mc_retire")
  29
  30 ;; SU.
  31 (define_cpu_unit "e500mc_su0_stage0,e500mc_su1_stage0" "e500mc_most")
  32
  33 ;; MU.
  34 (define_cpu_unit "e500mc_mu_stage0,e500mc_mu_stage1" "e500mc_most")
  35 (define_cpu_unit "e500mc_mu_stage2,e500mc_mu_stage3" "e500mc_most")
  36
  37 ;; Non-pipelined division.
  38 (define_cpu_unit "e500mc_mu_div" "e500mc_long")
  39
  40 ;; LSU.
  41 (define_cpu_unit "e500mc_lsu" "e500mc_most")
  42
  43 ;; FPU.
  44 (define_cpu_unit "e500mc_fpu" "e500mc_most")
  45
  46 ;; Branch unit.
  47 (define_cpu_unit "e500mc_bu" "e500mc_most")
  48
  49 ;; The following units are used to make the automata deterministic.
  50 (define_cpu_unit "present_e500mc_decode_0" "e500mc_most")
  51 (define_cpu_unit "present_e500mc_issue_0" "e500mc_most")
  52 (define_cpu_unit "present_e500mc_retire_0" "e500mc_retire")
  53 (define_cpu_unit "present_e500mc_su0_stage0" "e500mc_most")
  54
  55 ;; The following sets to make automata deterministic when option ndfa is used.
  56 (presence_set "present_e500mc_decode_0" "e500mc_decode_0")
  57 (presence_set "present_e500mc_issue_0" "e500mc_issue_0")
  58 (presence_set "present_e500mc_retire_0" "e500mc_retire_0")
  59 (presence_set "present_e500mc_su0_stage0" "e500mc_su0_stage0")
  60
  61 ;; Some useful abbreviations.
  62 (define_reservation "e500mc_decode"
  63     "e500mc_decode_0|e500mc_decode_1+present_e500mc_decode_0")
  64 (define_reservation "e500mc_issue"
  65     "e500mc_issue_0|e500mc_issue_1+present_e500mc_issue_0")
  66 (define_reservation "e500mc_retire"
  67    "e500mc_retire_0|e500mc_retire_1+present_e500mc_retire_0")
  68 (define_reservation "e500mc_su_stage0"
  69    "e500mc_su0_stage0|e500mc_su1_stage0+present_e500mc_su0_stage0")
  70
  71 ;; Simple SU insns.
  72 (define_insn_reservation "e500mc_su" 1
  73   (and (eq_attr "type" "integer,add,logical,insert,cmp,\
  74                         shift,trap,cntlz,exts,isel")
  75        (eq_attr "cpu" "ppce500mc"))
  76   "e500mc_decode,e500mc_issue+e500mc_su_stage0+e500mc_retire")
  77
  78 (define_insn_reservation "e500mc_two" 1
  79   (and (eq_attr "type" "two")
  80        (eq_attr "cpu" "ppce500mc"))
  81   "e500mc_decode,e500mc_issue+e500mc_su_stage0+e500mc_retire,\
  82    e500mc_issue+e500mc_su_stage0+e500mc_retire")
  83
  84 (define_insn_reservation "e500mc_three" 1
  85   (and (eq_attr "type" "three")
  86        (eq_attr "cpu" "ppce500mc"))
  87   "e500mc_decode,e500mc_issue+e500mc_su_stage0+e500mc_retire,\
  88    e500mc_issue+e500mc_su_stage0+e500mc_retire,\
  89    e500mc_issue+e500mc_su_stage0+e500mc_retire")
  90
  91 ;; Multiply.
  92 (define_insn_reservation "e500mc_multiply" 4
  93   (and (eq_attr "type" "mul")
  94        (eq_attr "cpu" "ppce500mc"))
  95   "e500mc_decode,e500mc_issue+e500mc_mu_stage0,e500mc_mu_stage1,\
  96    e500mc_mu_stage2,e500mc_mu_stage3+e500mc_retire")
  97
  98 ;; Divide. We use the average latency time here.
  99 (define_insn_reservation "e500mc_divide" 14
 100   (and (eq_attr "type" "div")
 101        (eq_attr "cpu" "ppce500mc"))
 102   "e500mc_decode,e500mc_issue+e500mc_mu_stage0+e500mc_mu_div,\
 103    e500mc_mu_div*13")
 104
 105 ;; Branch.
 106 (define_insn_reservation "e500mc_branch" 1
 107   (and (eq_attr "type" "jmpreg,branch,isync")
 108        (eq_attr "cpu" "ppce500mc"))
 109   "e500mc_decode,e500mc_bu,e500mc_retire")
 110
 111 ;; CR logical.
 112 (define_insn_reservation "e500mc_cr_logical" 1
 113   (and (eq_attr "type" "cr_logical")
 114        (eq_attr "cpu" "ppce500mc"))
 115   "e500mc_decode,e500mc_bu,e500mc_retire")
 116
 117 ;; Mfcr.
 118 (define_insn_reservation "e500mc_mfcr" 1
 119   (and (eq_attr "type" "mfcr")
 120        (eq_attr "cpu" "ppce500mc"))
 121   "e500mc_decode,e500mc_issue+e500mc_su1_stage0+e500mc_retire")
 122
 123 ;; Mtcrf.
 124 (define_insn_reservation "e500mc_mtcrf" 1
 125   (and (eq_attr "type" "mtcr")
 126        (eq_attr "cpu" "ppce500mc"))
 127   "e500mc_decode,e500mc_issue+e500mc_su1_stage0+e500mc_retire")
 128
 129 ;; Mtjmpr.
 130 (define_insn_reservation "e500mc_mtjmpr" 1
 131   (and (eq_attr "type" "mtjmpr,mfjmpr")
 132        (eq_attr "cpu" "ppce500mc"))
 133   "e500mc_decode,e500mc_issue+e500mc_su_stage0+e500mc_retire")
 134
 135 ;; Loads.
 136 (define_insn_reservation "e500mc_load" 3
 137   (and (eq_attr "type" "load,load_l,sync")
 138        (eq_attr "cpu" "ppce500mc"))
 139   "e500mc_decode,e500mc_issue+e500mc_lsu,nothing,e500mc_retire")
 140
 141 (define_insn_reservation "e500mc_fpload" 4
 142   (and (eq_attr "type" "fpload")
 143        (eq_attr "cpu" "ppce500mc"))
 144   "e500mc_decode,e500mc_issue+e500mc_lsu,nothing*2,e500mc_retire")
 145
 146 ;; Stores.
 147 (define_insn_reservation "e500mc_store" 3
 148   (and (eq_attr "type" "store,store_c")
 149        (eq_attr "cpu" "ppce500mc"))
 150   "e500mc_decode,e500mc_issue+e500mc_lsu,nothing,e500mc_retire")
 151
 152 (define_insn_reservation "e500mc_fpstore" 3
 153   (and (eq_attr "type" "fpstore")
 154        (eq_attr "cpu" "ppce500mc"))
 155   "e500mc_decode,e500mc_issue+e500mc_lsu,nothing,e500mc_retire")
 156
 157 ;; The following ignores the retire unit to avoid a large automata.
 158
 159 ;; Simple FP.
 160 (define_insn_reservation "e500mc_simple_float" 8
 161   (and (eq_attr "type" "fpsimple")
 162        (eq_attr "cpu" "ppce500mc"))
 163   "e500mc_decode,e500mc_issue+e500mc_fpu")
 164 ; "e500mc_decode,e500mc_issue+e500mc_fpu,nothing*6,e500mc_retire")
 165
 166 ;; FP.
 167 (define_insn_reservation "e500mc_float" 8
 168   (and (eq_attr "type" "fp")
 169        (eq_attr "cpu" "ppce500mc"))
 170   "e500mc_decode,e500mc_issue+e500mc_fpu")
 171 ; "e500mc_decode,e500mc_issue+e500mc_fpu,nothing*6,e500mc_retire")
 172
 173 (define_insn_reservation "e500mc_fpcompare" 8
 174   (and (eq_attr "type" "fpcompare")
 175        (eq_attr "cpu" "ppce500mc"))
 176   "e500mc_decode,e500mc_issue+e500mc_fpu")
 177
 178 (define_insn_reservation "e500mc_dmul" 10
 179   (and (eq_attr "type" "dmul")
 180        (eq_attr "cpu" "ppce500mc"))
 181   "e500mc_decode,e500mc_issue+e500mc_fpu")
 182
 183 ;; FP divides are not pipelined.
 184 (define_insn_reservation "e500mc_sdiv" 36
 185   (and (eq_attr "type" "sdiv")
 186        (eq_attr "cpu" "ppce500mc"))
 187   "e500mc_decode,e500mc_issue+e500mc_fpu,e500mc_fpu*35")
 188
 189 (define_insn_reservation "e500mc_ddiv" 66
 190   (and (eq_attr "type" "ddiv")
 191        (eq_attr "cpu" "ppce500mc"))
 192   "e500mc_decode,e500mc_issue+e500mc_fpu,e500mc_fpu*65")