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1 ;; Geode Scheduling
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2 ;; Copyright (C) 2006, 2007
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3 ;; Free Software Foundation, Inc.
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4 ;;
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5 ;; This file is part of GCC.
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6 ;;
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7 ;; GCC is free software; you can redistribute it and/or modify
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8 ;; it under the terms of the GNU General Public License as published by
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9 ;; the Free Software Foundation; either version 3, or (at your option)
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10 ;; any later version.
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11 ;;
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12 ;; GCC is distributed in the hope that it will be useful,
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13 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 ;; GNU General Public License for more details.
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16 ;;
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17 ;; You should have received a copy of the GNU General Public License
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18 ;; along with GCC; see the file COPYING3. If not see
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19 ;; <http://www.gnu.org/licenses/>.
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20 ;;
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21 ;; The Geode architecture is one insn issue processor.
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22 ;;
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23 ;; This description is based on data from the following documents:
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24 ;;
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25 ;; "AMD Geode GX Processor Data Book"
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26 ;; Advanced Micro Devices, Inc., Aug 2005.
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27 ;;
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28 ;; "AMD Geode LX Processor Data Book"
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29 ;; Advanced Micro Devices, Inc., Jan 2006.
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30 ;;
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31 ;;
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32 ;; CPU execution units of the Geode:
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33 ;;
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34 ;; issue describes the issue pipeline.
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35 ;; alu describes the Integer unit
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36 ;; fpu describes the FP unit
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37 ;;
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38 ;; The fp unit is out of order execution unit with register renaming.
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39 ;; There is also memory management unit and execution pipeline for
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40 ;; load/store operations. We ignore it and difference between insns
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41 ;; using memory and registers.
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42
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43 (define_automaton "geode")
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44
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45 (define_cpu_unit "geode_issue,geode_alu,geode_fpu" "geode")
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46
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47 (define_insn_reservation "alu" 1
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48 (and (eq_attr "cpu" "geode")
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49 (eq_attr "type" "alu,alu1,negnot,icmp,lea,test,imov,imovx,icmov,incdec,setcc"))
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50 "geode_issue,geode_alu")
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51
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52 (define_insn_reservation "shift" 2
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53 (and (eq_attr "cpu" "geode")
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54 (eq_attr "type" "ishift,ishift1,rotate,rotate1"))
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55 "geode_issue,geode_alu*2")
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56
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57 (define_insn_reservation "imul" 7
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58 (and (eq_attr "cpu" "geode")
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59 (eq_attr "type" "imul"))
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60 "geode_issue,geode_alu*7")
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61
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62 (define_insn_reservation "idiv" 40
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63 (and (eq_attr "cpu" "geode")
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64 (eq_attr "type" "idiv"))
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65 "geode_issue,geode_alu*40")
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66
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67 ;; The branch unit.
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68 (define_insn_reservation "call" 2
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69 (and (eq_attr "cpu" "geode")
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70 (eq_attr "type" "call,callv"))
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71 "geode_issue,geode_alu*2")
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72
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73 (define_insn_reservation "geode_branch" 1
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74 (and (eq_attr "cpu" "geode")
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75 (eq_attr "type" "ibr"))
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76 "geode_issue,geode_alu")
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77
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78 (define_insn_reservation "geode_pop_push" 1
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79 (and (eq_attr "cpu" "geode")
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80 (eq_attr "type" "pop,push"))
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81 "geode_issue,geode_alu")
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82
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83 (define_insn_reservation "geode_leave" 2
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84 (and (eq_attr "cpu" "geode")
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85 (eq_attr "type" "leave"))
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86 "geode_issue,geode_alu*2")
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87
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88 (define_insn_reservation "geode_load_str" 4
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89 (and (eq_attr "cpu" "geode")
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90 (and (eq_attr "type" "str")
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91 (eq_attr "memory" "load,both")))
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92 "geode_issue,geode_alu*4")
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93
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94 (define_insn_reservation "geode_store_str" 2
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95 (and (eq_attr "cpu" "geode")
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96 (and (eq_attr "type" "str")
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97 (eq_attr "memory" "store")))
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98 "geode_issue,geode_alu*2")
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99
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100 ;; Be optimistic
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101 (define_insn_reservation "geode_unknown" 1
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102 (and (eq_attr "cpu" "geode")
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103 (eq_attr "type" "multi,other"))
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104 "geode_issue,geode_alu")
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105
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106 ;; FPU
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107
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108 (define_insn_reservation "geode_fop" 6
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109 (and (eq_attr "cpu" "geode")
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110 (eq_attr "type" "fop,fcmp"))
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111 "geode_issue,geode_fpu*6")
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112
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113 (define_insn_reservation "geode_fsimple" 1
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114 (and (eq_attr "cpu" "geode")
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115 (eq_attr "type" "fmov,fcmov,fsgn,fxch"))
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116 "geode_issue,geode_fpu")
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117
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118 (define_insn_reservation "geode_fist" 4
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119 (and (eq_attr "cpu" "geode")
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120 (eq_attr "type" "fistp,fisttp"))
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121 "geode_issue,geode_fpu*4")
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122
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123 (define_insn_reservation "geode_fmul" 10
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124 (and (eq_attr "cpu" "geode")
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125 (eq_attr "type" "fmul"))
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126 "geode_issue,geode_fpu*10")
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127
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128 (define_insn_reservation "geode_fdiv" 47
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129 (and (eq_attr "cpu" "geode")
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130 (eq_attr "type" "fdiv"))
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131 "geode_issue,geode_fpu*47")
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132
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133 ;; We use minimal latency (fsin) here
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134 (define_insn_reservation "geode_fpspc" 54
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135 (and (eq_attr "cpu" "geode")
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136 (eq_attr "type" "fpspc"))
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137 "geode_issue,geode_fpu*54")
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138
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139 (define_insn_reservation "geode_frndint" 12
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140 (and (eq_attr "cpu" "geode")
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141 (eq_attr "type" "frndint"))
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142 "geode_issue,geode_fpu*12")
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143
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144 (define_insn_reservation "geode_mmxmov" 1
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145 (and (eq_attr "cpu" "geode")
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146 (eq_attr "type" "mmxmov"))
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147 "geode_issue,geode_fpu")
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148
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149 (define_insn_reservation "geode_mmx" 2
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150 (and (eq_attr "cpu" "geode")
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151 (eq_attr "type" "mmx,mmxadd,mmxmul,mmxcmp,mmxcvt,mmxshft"))
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152 "geode_issue,geode_fpu*2")
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