1 | #ifndef morpheo_behavioural_core_multi_front_end_front_end_prediction_unit_update_prediction_table_Types_h |
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2 | #define morpheo_behavioural_core_multi_front_end_front_end_prediction_unit_update_prediction_table_Types_h |
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3 | |
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4 | /* |
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5 | * $Id: Types.h 101 2009-01-15 17:19:08Z rosiere $ |
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6 | * |
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7 | * [ Description ] |
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8 | * |
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9 | */ |
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10 | |
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11 | #include "Behavioural/include/Types.h" |
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12 | |
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13 | namespace morpheo { |
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14 | namespace behavioural { |
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15 | namespace core { |
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16 | namespace multi_front_end { |
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17 | namespace front_end { |
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18 | namespace prediction_unit { |
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19 | namespace update_prediction_table { |
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20 | |
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21 | typedef enum |
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22 | { |
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23 | EVENT_STATE_OK , // Can predict |
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24 | EVENT_STATE_FLUSH_UFPT , // in decod stage, detect a miss, continue to execute but flush ufpt |
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25 | EVENT_STATE_FLUSH_UFPT_AND_UPT , // in commit stage, detect a miss, stop context and flush ufpt and upt |
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26 | EVENT_STATE_FLUSH_UPT , // in commit stage, detect a miss, context is stop and ufpt is flush, update RAS |
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27 | EVENT_STATE_UPDATE_CONTEXT , // prediction unit is update, send signal to context manager |
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28 | EVENT_STATE_WAIT_END_EVENT // prediction unit is ok, wait the end of event (send by Context State) |
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29 | } event_state_t; |
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30 | |
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31 | typedef enum |
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32 | { |
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33 | UPDATE_FETCH_PREDICTION_STATE_EMPTY , // Slot is empty |
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34 | UPDATE_FETCH_PREDICTION_STATE_WAIT_DECOD , // Have make a prediction, wait decod |
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35 | UPDATE_FETCH_PREDICTION_STATE_EVENT , // previous branch is a miss prediction |
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36 | UPDATE_FETCH_PREDICTION_STATE_END // branch is updated |
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37 | } ufpt_state_t; |
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38 | |
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39 | typedef enum |
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40 | { |
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41 | UPDATE_PREDICTION_STATE_EMPTY , // Slot is empty |
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42 | UPDATE_PREDICTION_STATE_WAIT_END , // Have make a prediction, wait branch_complete |
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43 | UPDATE_PREDICTION_STATE_OK , // this branch is a hit prediction |
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44 | UPDATE_PREDICTION_STATE_KO , // this branch is a miss prediction |
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45 | UPDATE_PREDICTION_STATE_EVENT , // previous branch is a miss prediction |
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46 | UPDATE_PREDICTION_STATE_END_OK , // branch is updated, update pointer |
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47 | UPDATE_PREDICTION_STATE_END_KO_WAIT_END , // branch is updated, don't update pointer |
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48 | UPDATE_PREDICTION_STATE_END_KO // branch is updated, don't update pointer |
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49 | } upt_state_t; |
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50 | |
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51 | class ufpt_entry_t |
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52 | { |
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53 | public : ufpt_state_t _state ; |
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54 | public : Tbranch_condition_t _condition ; |
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55 | public : Taddress_t _address_src ; |
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56 | public : Taddress_t _address_dest ; |
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57 | public : Tcontrol_t _last_take ; |
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58 | //public : Tcontrol_t _good_take ; |
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59 | public : Tcontrol_t _is_accurate ; |
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60 | public : Thistory_t _history ; |
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61 | public : Taddress_t _address_ras ; |
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62 | public : Tptr_t _index_ras ; |
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63 | //public : Tcontrol_t _ifetch_prediction; |
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64 | }; |
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65 | |
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66 | class upt_entry_t |
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67 | { |
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68 | public : upt_state_t _state ; |
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69 | public : Tbranch_condition_t _condition ; |
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70 | public : Taddress_t _address_src ; |
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71 | public : Taddress_t _address_dest ; |
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72 | public : Tcontrol_t _last_take ; |
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73 | public : Tcontrol_t _good_take ; // not in ufpt |
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74 | public : Tcontrol_t _is_accurate ; |
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75 | public : Thistory_t _history ; |
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76 | public : Taddress_t _address_ras ; |
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77 | public : Tptr_t _index_ras ; |
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78 | public : Tcontrol_t _ifetch_prediction; // not in ufpt |
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79 | }; |
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80 | |
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81 | |
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82 | // BRANCH_CONDITION_NONE_WITHOUT_WRITE_STACK |
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83 | // BRANCH_CONDITION_NONE_WITH_WRITE_STACK |
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84 | // BRANCH_CONDITION_FLAG_UNSET |
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85 | // BRANCH_CONDITION_FLAG_SET |
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86 | // BRANCH_CONDITION_READ_REGISTER_WITHOUT_WRITE_STACK |
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87 | // BRANCH_CONDITION_READ_REGISTER_WITH_WRITE_STACK |
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88 | // BRANCH_CONDITION_READ_STACK |
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89 | |
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90 | |
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91 | #define update_btb(cond) true |
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92 | |
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93 | #define update_dir(cond) ((cond == BRANCH_CONDITION_FLAG_UNSET) or \ |
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94 | (cond == BRANCH_CONDITION_FLAG_SET)) |
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95 | |
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96 | #define update_ras(cond) ((cond == BRANCH_CONDITION_NONE_WITH_WRITE_STACK ) or \ |
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97 | (cond == BRANCH_CONDITION_READ_REGISTER_WITH_WRITE_STACK) or \ |
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98 | (cond == BRANCH_CONDITION_READ_STACK )) |
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99 | |
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100 | #define push_ras(cond) ((cond == BRANCH_CONDITION_NONE_WITH_WRITE_STACK ) or \ |
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101 | (cond == BRANCH_CONDITION_READ_REGISTER_WITH_WRITE_STACK)) |
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102 | |
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103 | #define pop_ras(cond) ((cond == BRANCH_CONDITION_READ_STACK )) |
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104 | |
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105 | #define need_update(cond) update_ras(cond) |
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106 | |
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107 | }; // end namespace update_prediction_table |
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108 | }; // end namespace prediction_unit |
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109 | }; // end namespace front_end |
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110 | }; // end namespace multi_front_end |
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111 | }; // end namespace core |
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112 | }; // end namespace behavioural |
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113 | |
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114 | template<> inline std::string toString<morpheo::behavioural::core::multi_front_end::front_end::prediction_unit::update_prediction_table::event_state_t>(const morpheo::behavioural::core::multi_front_end::front_end::prediction_unit::update_prediction_table::event_state_t& x) |
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115 | { |
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116 | switch (x) |
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117 | { |
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118 | case morpheo::behavioural::core::multi_front_end::front_end::prediction_unit::update_prediction_table::EVENT_STATE_OK : return "ok" ; break; |
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119 | case morpheo::behavioural::core::multi_front_end::front_end::prediction_unit::update_prediction_table::EVENT_STATE_FLUSH_UFPT : return "flush_ufpt" ; break; |
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120 | case morpheo::behavioural::core::multi_front_end::front_end::prediction_unit::update_prediction_table::EVENT_STATE_FLUSH_UFPT_AND_UPT : return "flush_ufpt_and_upt" ; break; |
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121 | case morpheo::behavioural::core::multi_front_end::front_end::prediction_unit::update_prediction_table::EVENT_STATE_FLUSH_UPT : return "flush_upt" ; break; |
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122 | case morpheo::behavioural::core::multi_front_end::front_end::prediction_unit::update_prediction_table::EVENT_STATE_UPDATE_CONTEXT : return "update_context" ; break; |
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123 | case morpheo::behavioural::core::multi_front_end::front_end::prediction_unit::update_prediction_table::EVENT_STATE_WAIT_END_EVENT : return "wait_and_event" ; break; |
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124 | default : return "" ; break; |
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125 | } |
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126 | }; |
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127 | |
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128 | template<> inline std::string toString<morpheo::behavioural::core::multi_front_end::front_end::prediction_unit::update_prediction_table::ufpt_state_t>(const morpheo::behavioural::core::multi_front_end::front_end::prediction_unit::update_prediction_table::ufpt_state_t& x) |
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129 | { |
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130 | switch (x) |
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131 | { |
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132 | case morpheo::behavioural::core::multi_front_end::front_end::prediction_unit::update_prediction_table::UPDATE_FETCH_PREDICTION_STATE_EMPTY : return "empty" ; break; |
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133 | case morpheo::behavioural::core::multi_front_end::front_end::prediction_unit::update_prediction_table::UPDATE_FETCH_PREDICTION_STATE_WAIT_DECOD : return "wait_decod"; break; |
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134 | case morpheo::behavioural::core::multi_front_end::front_end::prediction_unit::update_prediction_table::UPDATE_FETCH_PREDICTION_STATE_EVENT : return "event" ; break; |
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135 | case morpheo::behavioural::core::multi_front_end::front_end::prediction_unit::update_prediction_table::UPDATE_FETCH_PREDICTION_STATE_END : return "end" ; break; |
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136 | default : return "" ; break; |
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137 | } |
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138 | }; |
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139 | |
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140 | template<> inline std::string toString<morpheo::behavioural::core::multi_front_end::front_end::prediction_unit::update_prediction_table::upt_state_t>(const morpheo::behavioural::core::multi_front_end::front_end::prediction_unit::update_prediction_table::upt_state_t& x) |
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141 | { |
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142 | switch (x) |
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143 | { |
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144 | case morpheo::behavioural::core::multi_front_end::front_end::prediction_unit::update_prediction_table::UPDATE_PREDICTION_STATE_EMPTY : return "empty" ; break; |
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145 | case morpheo::behavioural::core::multi_front_end::front_end::prediction_unit::update_prediction_table::UPDATE_PREDICTION_STATE_WAIT_END : return "wait_end" ; break; |
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146 | case morpheo::behavioural::core::multi_front_end::front_end::prediction_unit::update_prediction_table::UPDATE_PREDICTION_STATE_OK : return "ok" ; break; |
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147 | case morpheo::behavioural::core::multi_front_end::front_end::prediction_unit::update_prediction_table::UPDATE_PREDICTION_STATE_KO : return "ko" ; break; |
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148 | case morpheo::behavioural::core::multi_front_end::front_end::prediction_unit::update_prediction_table::UPDATE_PREDICTION_STATE_EVENT : return "event" ; break; |
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149 | case morpheo::behavioural::core::multi_front_end::front_end::prediction_unit::update_prediction_table::UPDATE_PREDICTION_STATE_END_OK : return "end_ok" ; break; |
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150 | case morpheo::behavioural::core::multi_front_end::front_end::prediction_unit::update_prediction_table::UPDATE_PREDICTION_STATE_END_KO_WAIT_END: return "end_ko_wait_end" ; break; |
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151 | case morpheo::behavioural::core::multi_front_end::front_end::prediction_unit::update_prediction_table::UPDATE_PREDICTION_STATE_END_KO : return "end_ko" ; break; |
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152 | default : return "" ; break; |
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153 | } |
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154 | }; |
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155 | |
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156 | }; // end namespace morpheo |
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157 | |
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158 | #endif |
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