contrib/gcc-8.0/gcc/config/i386/geode.md

   1 ;; Geode Scheduling
   2 ;; Copyright (C) 2006-2018 Free Software Foundation, Inc.
   3 ;;
   4 ;; This file is part of GCC.
   5 ;;
   6 ;; GCC is free software; you can redistribute it and/or modify
   7 ;; it under the terms of the GNU General Public License as published by
   8 ;; the Free Software Foundation; either version 3, or (at your option)
   9 ;; any later version.
  10 ;;
  11 ;; GCC is distributed in the hope that it will be useful,
  12 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 ;; GNU General Public License for more details.
  15 ;;
  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/>.
  19 ;;
  20 ;; The Geode architecture is one insn issue processor.
  21 ;;
  22 ;; This description is based on data from the following documents:
  23 ;;
  24 ;;    "AMD Geode GX Processor Data Book"
  25 ;;    Advanced Micro Devices, Inc., Aug 2005.
  26 ;;
  27 ;;    "AMD Geode LX Processor Data Book"
  28 ;;    Advanced Micro Devices, Inc., Jan 2006.
  29 ;;
  30 ;;
  31 ;; CPU execution units of the Geode:
  32 ;;
  33 ;; issue        describes the issue pipeline.
  34 ;; alu          describes the Integer unit
  35 ;; fpu          describes the FP unit
  36 ;;
  37 ;; The fp unit is out of order execution unit with register renaming.
  38 ;; There is also memory management unit and execution pipeline for
  39 ;; load/store operations.  We ignore it and difference between insns
  40 ;; using memory and registers.
  41
  42 (define_automaton "geode")
  43
  44 (define_cpu_unit "geode_issue,geode_alu,geode_fpu" "geode")
  45
  46 (define_insn_reservation "alu" 1
  47                          (and (eq_attr "cpu" "geode")
  48                               (eq_attr "type" "alu,alu1,negnot,icmp,lea,test,imov,imovx,icmov,incdec,setcc"))
  49                          "geode_issue,geode_alu")
  50
  51 (define_insn_reservation "shift" 2
  52                          (and (eq_attr "cpu" "geode")
  53                               (eq_attr "type" "ishift,ishift1,rotate,rotate1"))
  54                          "geode_issue,geode_alu*2")
  55
  56 (define_insn_reservation "imul" 7
  57                          (and (eq_attr "cpu" "geode")
  58                               (eq_attr "type" "imul"))
  59                          "geode_issue,geode_alu*7")
  60
  61 (define_insn_reservation "idiv" 40
  62                          (and (eq_attr "cpu" "geode")
  63                               (eq_attr "type" "idiv"))
  64                          "geode_issue,geode_alu*40")
  65
  66 ;; The branch unit.
  67 (define_insn_reservation "call" 2
  68                          (and (eq_attr "cpu" "geode")
  69                               (eq_attr "type" "call,callv"))
  70                          "geode_issue,geode_alu*2")
  71
  72 (define_insn_reservation "geode_branch" 1
  73                          (and (eq_attr "cpu" "geode")
  74                               (eq_attr "type" "ibr"))
  75                          "geode_issue,geode_alu")
  76
  77 (define_insn_reservation "geode_pop_push" 1
  78                          (and (eq_attr "cpu" "geode")
  79                               (eq_attr "type" "pop,push"))
  80                          "geode_issue,geode_alu")
  81
  82 (define_insn_reservation "geode_leave" 2
  83                          (and (eq_attr "cpu" "geode")
  84                               (eq_attr "type" "leave"))
  85                          "geode_issue,geode_alu*2")
  86
  87 (define_insn_reservation "geode_load_str" 4
  88                          (and (eq_attr "cpu" "geode")
  89                               (and (eq_attr "type" "str")
  90                                    (eq_attr "memory" "load,both")))
  91                          "geode_issue,geode_alu*4")
  92
  93 (define_insn_reservation "geode_store_str" 2
  94                          (and (eq_attr "cpu" "geode")
  95                               (and (eq_attr "type" "str")
  96                                    (eq_attr "memory" "store")))
  97                          "geode_issue,geode_alu*2")
  98
  99 ;; Be optimistic
 100 (define_insn_reservation "geode_unknown" 1
 101                          (and (eq_attr "cpu" "geode")
 102                               (eq_attr "type" "multi,other"))
 103                          "geode_issue,geode_alu")
 104
 105 ;; FPU
 106
 107 (define_insn_reservation "geode_fop" 6
 108                          (and (eq_attr "cpu" "geode")
 109                               (eq_attr "type" "fop,fcmp"))
 110                          "geode_issue,geode_fpu*6")
 111
 112 (define_insn_reservation "geode_fsimple" 1
 113                          (and (eq_attr "cpu" "geode")
 114                               (eq_attr "type" "fmov,fcmov,fsgn,fxch"))
 115                          "geode_issue,geode_fpu")
 116
 117 (define_insn_reservation "geode_fist" 4
 118                          (and (eq_attr "cpu" "geode")
 119                               (eq_attr "type" "fistp,fisttp"))
 120                          "geode_issue,geode_fpu*4")
 121
 122 (define_insn_reservation "geode_fmul" 10
 123                          (and (eq_attr "cpu" "geode")
 124                               (eq_attr "type" "fmul"))
 125                          "geode_issue,geode_fpu*10")
 126
 127 (define_insn_reservation "geode_fdiv" 47
 128                          (and (eq_attr "cpu" "geode")
 129                               (eq_attr "type" "fdiv"))
 130                          "geode_issue,geode_fpu*47")
 131
 132 ;; We use minimal latency (fsin) here
 133 (define_insn_reservation "geode_fpspc" 54
 134                          (and (eq_attr "cpu" "geode")
 135                               (eq_attr "type" "fpspc"))
 136                          "geode_issue,geode_fpu*54")
 137
 138 (define_insn_reservation "geode_frndint" 12
 139                          (and (eq_attr "cpu" "geode")
 140                               (eq_attr "type" "frndint"))
 141                          "geode_issue,geode_fpu*12")
 142
 143 (define_insn_reservation "geode_mmxmov" 1
 144                          (and (eq_attr "cpu" "geode")
 145                               (eq_attr "type" "mmxmov"))
 146                          "geode_issue,geode_fpu")
 147
 148 (define_insn_reservation "geode_mmx" 2
 149                          (and (eq_attr "cpu" "geode")
 150                               (eq_attr "type" "mmx,mmxadd,mmxmul,mmxcmp,mmxcvt,mmxshft"))
 151                          "geode_issue,geode_fpu*2")