gcc/config/i386/geode.md

   1 ;; Geode Scheduling
   2 ;; Copyright (C) 2006, 2007
   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 3, 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 COPYING3.  If not see
  19 ;; <http://www.gnu.org/licenses/>.
  20 ;;
  21 ;; The Geode architecture is one insn issue processor.
  22 ;;
  23 ;; This description is based on data from the following documents:
  24 ;;
  25 ;;    "AMD Geode GX Processor Data Book"
  26 ;;    Advanced Micro Devices, Inc., Aug 2005.
  27 ;;
  28 ;;    "AMD Geode LX Processor Data Book"
  29 ;;    Advanced Micro Devices, Inc., Jan 2006.
  30 ;;
  31 ;;
  32 ;; CPU execution units of the Geode:
  33 ;;
  34 ;; issue        describes the issue pipeline.
  35 ;; alu          describes the Integer unit
  36 ;; fpu          describes the FP unit
  37 ;;
  38 ;; The fp unit is out of order execution unit with register renaming.
  39 ;; There is also memory management unit and execution pipeline for
  40 ;; load/store operations.  We ignore it and difference between insns
  41 ;; using memory and registers.
  42
  43 (define_automaton "geode")
  44
  45 (define_cpu_unit "geode_issue,geode_alu,geode_fpu" "geode")
  46
  47 (define_insn_reservation "alu" 1
  48                          (and (eq_attr "cpu" "geode")
  49                               (eq_attr "type" "alu,alu1,negnot,icmp,lea,test,imov,imovx,icmov,incdec,setcc"))
  50                          "geode_issue,geode_alu")
  51
  52 (define_insn_reservation "shift" 2
  53                          (and (eq_attr "cpu" "geode")
  54                               (eq_attr "type" "ishift,ishift1,rotate,rotate1"))
  55                          "geode_issue,geode_alu*2")
  56
  57 (define_insn_reservation "imul" 7
  58                          (and (eq_attr "cpu" "geode")
  59                               (eq_attr "type" "imul"))
  60                          "geode_issue,geode_alu*7")
  61
  62 (define_insn_reservation "idiv" 40
  63                          (and (eq_attr "cpu" "geode")
  64                               (eq_attr "type" "idiv"))
  65                          "geode_issue,geode_alu*40")
  66
  67 ;; The branch unit.
  68 (define_insn_reservation "call" 2
  69                          (and (eq_attr "cpu" "geode")
  70                               (eq_attr "type" "call,callv"))
  71                          "geode_issue,geode_alu*2")
  72
  73 (define_insn_reservation "geode_branch" 1
  74                          (and (eq_attr "cpu" "geode")
  75                               (eq_attr "type" "ibr"))
  76                          "geode_issue,geode_alu")
  77
  78 (define_insn_reservation "geode_pop_push" 1
  79                          (and (eq_attr "cpu" "geode")
  80                               (eq_attr "type" "pop,push"))
  81                          "geode_issue,geode_alu")
  82
  83 (define_insn_reservation "geode_leave" 2
  84                          (and (eq_attr "cpu" "geode")
  85                               (eq_attr "type" "leave"))
  86                          "geode_issue,geode_alu*2")
  87
  88 (define_insn_reservation "geode_load_str" 4
  89                          (and (eq_attr "cpu" "geode")
  90                               (and (eq_attr "type" "str")
  91                                    (eq_attr "memory" "load,both")))
  92                          "geode_issue,geode_alu*4")
  93
  94 (define_insn_reservation "geode_store_str" 2
  95                          (and (eq_attr "cpu" "geode")
  96                               (and (eq_attr "type" "str")
  97                                    (eq_attr "memory" "store")))
  98                          "geode_issue,geode_alu*2")
  99
 100 ;; Be optimistic
 101 (define_insn_reservation "geode_unknown" 1
 102                          (and (eq_attr "cpu" "geode")
 103                               (eq_attr "type" "multi,other"))
 104                          "geode_issue,geode_alu")
 105
 106 ;; FPU
 107
 108 (define_insn_reservation "geode_fop" 6
 109                          (and (eq_attr "cpu" "geode")
 110                               (eq_attr "type" "fop,fcmp"))
 111                          "geode_issue,geode_fpu*6")
 112
 113 (define_insn_reservation "geode_fsimple" 1
 114                          (and (eq_attr "cpu" "geode")
 115                               (eq_attr "type" "fmov,fcmov,fsgn,fxch"))
 116                          "geode_issue,geode_fpu")
 117
 118 (define_insn_reservation "geode_fist" 4
 119                          (and (eq_attr "cpu" "geode")
 120                               (eq_attr "type" "fistp,fisttp"))
 121                          "geode_issue,geode_fpu*4")
 122
 123 (define_insn_reservation "geode_fmul" 10
 124                          (and (eq_attr "cpu" "geode")
 125                               (eq_attr "type" "fmul"))
 126                          "geode_issue,geode_fpu*10")
 127
 128 (define_insn_reservation "geode_fdiv" 47
 129                          (and (eq_attr "cpu" "geode")
 130                               (eq_attr "type" "fdiv"))
 131                          "geode_issue,geode_fpu*47")
 132
 133 ;; We use minimal latency (fsin) here
 134 (define_insn_reservation "geode_fpspc" 54
 135                          (and (eq_attr "cpu" "geode")
 136                               (eq_attr "type" "fpspc"))
 137                          "geode_issue,geode_fpu*54")
 138
 139 (define_insn_reservation "geode_frndint" 12
 140                          (and (eq_attr "cpu" "geode")
 141                               (eq_attr "type" "frndint"))
 142                          "geode_issue,geode_fpu*12")
 143
 144 (define_insn_reservation "geode_mmxmov" 1
 145                          (and (eq_attr "cpu" "geode")
 146                               (eq_attr "type" "mmxmov"))
 147                          "geode_issue,geode_fpu")
 148
 149 (define_insn_reservation "geode_mmx" 2
 150                          (and (eq_attr "cpu" "geode")
 151                               (eq_attr "type" "mmx,mmxadd,mmxmul,mmxcmp,mmxcvt,mmxshft"))
 152                          "geode_issue,geode_fpu*2")