gcc/config/rs6000/e500mc.md

   1 ;; Pipeline description for Motorola PowerPC e500mc core.
   2 ;;   Copyright (C) 2008 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,insert_word,insert_dword,cmp,compare,\
  74                         delayed_compare,var_delayed_compare,fast_compare,\
  75                         shift,trap,var_shift_rotate,cntlz,exts")
  76        (eq_attr "cpu" "ppce500mc"))
  77   "e500mc_decode,e500mc_issue+e500mc_su_stage0+e500mc_retire")
  78
  79 (define_insn_reservation "e500mc_two" 1
  80   (and (eq_attr "type" "two")
  81        (eq_attr "cpu" "ppce500mc"))
  82   "e500mc_decode,e500mc_issue+e500mc_su_stage0+e500mc_retire,\
  83    e500mc_issue+e500mc_su_stage0+e500mc_retire")
  84
  85 (define_insn_reservation "e500mc_three" 1
  86   (and (eq_attr "type" "three")
  87        (eq_attr "cpu" "ppce500mc"))
  88   "e500mc_decode,e500mc_issue+e500mc_su_stage0+e500mc_retire,\
  89    e500mc_issue+e500mc_su_stage0+e500mc_retire,\
  90    e500mc_issue+e500mc_su_stage0+e500mc_retire")
  91
  92 ;; Multiply.
  93 (define_insn_reservation "e500mc_multiply" 4
  94   (and (eq_attr "type" "imul,imul2,imul3,imul_compare")
  95        (eq_attr "cpu" "ppce500mc"))
  96   "e500mc_decode,e500mc_issue+e500mc_mu_stage0,e500mc_mu_stage1,\
  97    e500mc_mu_stage2,e500mc_mu_stage3+e500mc_retire")
  98
  99 ;; Divide. We use the average latency time here.
 100 (define_insn_reservation "e500mc_divide" 14
 101   (and (eq_attr "type" "idiv")
 102        (eq_attr "cpu" "ppce500mc"))
 103   "e500mc_decode,e500mc_issue+e500mc_mu_stage0+e500mc_mu_div,\
 104    e500mc_mu_div*13")
 105
 106 ;; Branch.
 107 (define_insn_reservation "e500mc_branch" 1
 108   (and (eq_attr "type" "jmpreg,branch,isync")
 109        (eq_attr "cpu" "ppce500mc"))
 110   "e500mc_decode,e500mc_bu,e500mc_retire")
 111
 112 ;; CR logical.
 113 (define_insn_reservation "e500mc_cr_logical" 1
 114   (and (eq_attr "type" "cr_logical,delayed_cr")
 115        (eq_attr "cpu" "ppce500mc"))
 116   "e500mc_decode,e500mc_bu,e500mc_retire")
 117
 118 ;; Mfcr.
 119 (define_insn_reservation "e500mc_mfcr" 1
 120   (and (eq_attr "type" "mfcr")
 121        (eq_attr "cpu" "ppce500mc"))
 122   "e500mc_decode,e500mc_issue+e500mc_su1_stage0+e500mc_retire")
 123
 124 ;; Mtcrf.
 125 (define_insn_reservation "e500mc_mtcrf" 1
 126   (and (eq_attr "type" "mtcr")
 127        (eq_attr "cpu" "ppce500mc"))
 128   "e500mc_decode,e500mc_issue+e500mc_su1_stage0+e500mc_retire")
 129
 130 ;; Mtjmpr.
 131 (define_insn_reservation "e500mc_mtjmpr" 1
 132   (and (eq_attr "type" "mtjmpr,mfjmpr")
 133        (eq_attr "cpu" "ppce500mc"))
 134   "e500mc_decode,e500mc_issue+e500mc_su_stage0+e500mc_retire")
 135
 136 ;; Brinc.
 137 (define_insn_reservation "e500mc_brinc" 1
 138   (and (eq_attr "type" "brinc")
 139        (eq_attr "cpu" "ppce500mc"))
 140   "e500mc_decode,e500mc_issue+e500mc_su_stage0+e500mc_retire")
 141
 142 ;; Loads.
 143 (define_insn_reservation "e500mc_load" 3
 144   (and (eq_attr "type" "load,load_ext,load_ext_u,load_ext_ux,load_ux,load_u,\
 145                         load_l,sync")
 146        (eq_attr "cpu" "ppce500mc"))
 147   "e500mc_decode,e500mc_issue+e500mc_lsu,nothing,e500mc_retire")
 148
 149 (define_insn_reservation "e500mc_fpload" 4
 150   (and (eq_attr "type" "fpload,fpload_ux,fpload_u")
 151        (eq_attr "cpu" "ppce500mc"))
 152   "e500mc_decode,e500mc_issue+e500mc_lsu,nothing*2,e500mc_retire")
 153
 154 ;; Stores.
 155 (define_insn_reservation "e500mc_store" 3
 156   (and (eq_attr "type" "store,store_ux,store_u,store_c")
 157        (eq_attr "cpu" "ppce500mc"))
 158   "e500mc_decode,e500mc_issue+e500mc_lsu,nothing,e500mc_retire")
 159
 160 (define_insn_reservation "e500mc_fpstore" 3
 161   (and (eq_attr "type" "fpstore,fpstore_ux,fpstore_u")
 162        (eq_attr "cpu" "ppce500mc"))
 163   "e500mc_decode,e500mc_issue+e500mc_lsu,nothing,e500mc_retire")
 164
 165 ;; The following ignores the retire unit to avoid a large automata.
 166
 167 ;; Simple FP.
 168 (define_insn_reservation "e500mc_simple_float" 8
 169   (and (eq_attr "type" "fpsimple")
 170        (eq_attr "cpu" "ppce500mc"))
 171   "e500mc_decode,e500mc_issue+e500mc_fpu")
 172 ; "e500mc_decode,e500mc_issue+e500mc_fpu,nothing*6,e500mc_retire")
 173
 174 ;; FP.
 175 (define_insn_reservation "e500mc_float" 8
 176   (and (eq_attr "type" "fp")
 177        (eq_attr "cpu" "ppce500mc"))
 178   "e500mc_decode,e500mc_issue+e500mc_fpu")
 179 ; "e500mc_decode,e500mc_issue+e500mc_fpu,nothing*6,e500mc_retire")
 180
 181 (define_insn_reservation "e500mc_fpcompare" 8
 182   (and (eq_attr "type" "fpcompare")
 183        (eq_attr "cpu" "ppce500mc"))
 184   "e500mc_decode,e500mc_issue+e500mc_fpu")
 185
 186 (define_insn_reservation "e500mc_dmul" 10
 187   (and (eq_attr "type" "dmul")
 188        (eq_attr "cpu" "ppce500mc"))
 189   "e500mc_decode,e500mc_issue+e500mc_fpu")
 190
 191 ;; FP divides are not pipelined.
 192 (define_insn_reservation "e500mc_sdiv" 36
 193   (and (eq_attr "type" "sdiv")
 194        (eq_attr "cpu" "ppce500mc"))
 195   "e500mc_decode,e500mc_issue+e500mc_fpu,e500mc_fpu*35")
 196
 197 (define_insn_reservation "e500mc_ddiv" 66
 198   (and (eq_attr "type" "ddiv")
 199        (eq_attr "cpu" "ppce500mc"))
 200   "e500mc_decode,e500mc_issue+e500mc_fpu,e500mc_fpu*65")