contrib/gcc/config/i386/geode.md

   1 ;; Geode Scheduling
   2 ;; Copyright (C) 2006
   3 ;; Free Software Foundation, Inc.
   4 ;;
   5 ;; This file is part of GCC.
   6 ;;
   7 ;; GCC is free software; you can redistribute it and/or modify
   8 ;; it under the terms of the GNU General Public License as published by
   9 ;; the Free Software Foundation; either version 2, or (at your option)
  10 ;; any later version.
  11 ;;
  12 ;; GCC is distributed in the hope that it will be useful,
  13 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 ;; GNU General Public 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 COPYING.  If not, write to
  19 ;; the Free Software Foundation, 51 Franklin Street, Fifth Floor,
  20 ;; Boston, MA 02110-1301, USA.
  21 ;;
  22 ;; The Geode architecture is one insn issue processor.
  23 ;;
  24 ;; This description is based on data from the following documents:
  25 ;;
  26 ;;    "AMD Geode GX Processor Data Book"
  27 ;;    Advanced Micro Devices, Inc., Aug 2005.
  28 ;;
  29 ;;    "AMD Geode LX Processor Data Book"
  30 ;;    Advanced Micro Devices, Inc., Jan 2006.
  31 ;;
  32 ;;
  33 ;; CPU execution units of the Geode:
  34 ;;
  35 ;; issue        describes the issue pipeline.
  36 ;; alu          describes the Integer unit
  37 ;; fpu          describes the FP unit
  38 ;;
  39 ;; The fp unit is out of order execution unit with register renaming.
  40 ;; There is also memory management unit and execution pipeline for
  41 ;; load/store operations.  We ignore it and difference between insns
  42 ;; using memory and registers.
  43
  44 (define_automaton "geode")
  45
  46 (define_cpu_unit "geode_issue,geode_alu,geode_fpu" "geode")
  47
  48 (define_insn_reservation "alu" 1
  49                          (and (eq_attr "cpu" "geode")
  50                               (eq_attr "type" "alu,alu1,negnot,icmp,lea,test,imov,imovx,icmov,incdec,setcc"))
  51                          "geode_issue,geode_alu")
  52
  53 (define_insn_reservation "shift" 2
  54                          (and (eq_attr "cpu" "geode")
  55                               (eq_attr "type" "ishift,ishift1,rotate,rotate1,cld"))
  56                          "geode_issue,geode_alu*2")
  57
  58 (define_insn_reservation "imul" 7
  59                          (and (eq_attr "cpu" "geode")
  60                               (eq_attr "type" "imul"))
  61                          "geode_issue,geode_alu*7")
  62
  63 (define_insn_reservation "idiv" 40
  64                          (and (eq_attr "cpu" "geode")
  65                               (eq_attr "type" "idiv"))
  66                          "geode_issue,geode_alu*40")
  67
  68 ;; The branch unit.
  69 (define_insn_reservation "call" 2
  70                          (and (eq_attr "cpu" "geode")
  71                               (eq_attr "type" "call,callv"))
  72                          "geode_issue,geode_alu*2")
  73
  74 (define_insn_reservation "geode_branch" 1
  75                          (and (eq_attr "cpu" "geode")
  76                               (eq_attr "type" "ibr"))
  77                          "geode_issue,geode_alu")
  78
  79 (define_insn_reservation "geode_pop_push" 1
  80                          (and (eq_attr "cpu" "geode")
  81                               (eq_attr "type" "pop,push"))
  82                          "geode_issue,geode_alu")
  83
  84 (define_insn_reservation "geode_leave" 2
  85                          (and (eq_attr "cpu" "geode")
  86                               (eq_attr "type" "leave"))
  87                          "geode_issue,geode_alu*2")
  88
  89 (define_insn_reservation "geode_load_str" 4
  90                          (and (eq_attr "cpu" "geode")
  91                               (and (eq_attr "type" "str")
  92                                    (eq_attr "memory" "load,both")))
  93                          "geode_issue,geode_alu*4")
  94
  95 (define_insn_reservation "geode_store_str" 2
  96                          (and (eq_attr "cpu" "geode")
  97                               (and (eq_attr "type" "str")
  98                                    (eq_attr "memory" "store")))
  99                          "geode_issue,geode_alu*2")
 100
 101 ;; Be optimistic
 102 (define_insn_reservation "geode_unknown" 1
 103                          (and (eq_attr "cpu" "geode")
 104                               (eq_attr "type" "multi,other"))
 105                          "geode_issue,geode_alu")
 106
 107 ;; FPU
 108
 109 (define_insn_reservation "geode_fop" 6
 110                          (and (eq_attr "cpu" "geode")
 111                               (eq_attr "type" "fop,fcmp"))
 112                          "geode_issue,geode_fpu*6")
 113
 114 (define_insn_reservation "geode_fsimple" 1
 115                          (and (eq_attr "cpu" "geode")
 116                               (eq_attr "type" "fmov,fcmov,fsgn,fxch"))
 117                          "geode_issue,geode_fpu")
 118
 119 (define_insn_reservation "geode_fist" 4
 120                          (and (eq_attr "cpu" "geode")
 121                               (eq_attr "type" "fistp,fisttp"))
 122                          "geode_issue,geode_fpu*4")
 123
 124 (define_insn_reservation "geode_fmul" 10
 125                          (and (eq_attr "cpu" "geode")
 126                               (eq_attr "type" "fmul"))
 127                          "geode_issue,geode_fpu*10")
 128
 129 (define_insn_reservation "geode_fdiv" 47
 130                          (and (eq_attr "cpu" "geode")
 131                               (eq_attr "type" "fdiv"))
 132                          "geode_issue,geode_fpu*47")
 133
 134 ;; We use minimal latency (fsin) here
 135 (define_insn_reservation "geode_fpspc" 54
 136                          (and (eq_attr "cpu" "geode")
 137                               (eq_attr "type" "fpspc"))
 138                          "geode_issue,geode_fpu*54")
 139
 140 (define_insn_reservation "geode_frndint" 12
 141                          (and (eq_attr "cpu" "geode")
 142                               (eq_attr "type" "frndint"))
 143                          "geode_issue,geode_fpu*12")
 144
 145 (define_insn_reservation "geode_mmxmov" 1
 146                          (and (eq_attr "cpu" "geode")
 147                               (eq_attr "type" "mmxmov"))
 148                          "geode_issue,geode_fpu")
 149
 150 (define_insn_reservation "geode_mmx" 2
 151                          (and (eq_attr "cpu" "geode")
 152                               (eq_attr "type" "mmx,mmxadd,mmxmul,mmxcmp,mmxcvt,mmxshft"))
 153                          "geode_issue,geode_fpu*2")