[4] | 1 | #ifdef VHDL |
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| 2 | /* |
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| 3 | * $Id: Meta_Predictor_Glue_vhdl_body.cpp 81 2008-04-15 18:40:01Z rosiere $ |
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| 4 | * |
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| 5 | * [ Description ] |
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| 6 | * |
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| 7 | */ |
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| 8 | |
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[48] | 9 | #include "Behavioural/Core/Multi_Front_end/Front_end/Prediction_unit/Direction/Meta_Predictor/Meta_Predictor_Glue/include/Meta_Predictor_Glue.h" |
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[4] | 10 | |
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| 11 | namespace morpheo { |
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| 12 | namespace behavioural { |
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[48] | 13 | namespace core { |
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| 14 | namespace multi_front_end { |
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| 15 | namespace front_end { |
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| 16 | namespace prediction_unit { |
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| 17 | namespace direction { |
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| 18 | |
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[4] | 19 | namespace meta_predictor { |
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| 20 | namespace meta_predictor_glue { |
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| 21 | |
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| 22 | |
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[44] | 23 | void Meta_Predictor_Glue::vhdl_body (Vhdl * & vhdl) |
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[4] | 24 | { |
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| 25 | log_printf(FUNC,Meta_Predictor_Glue,"vhdl_body","Begin"); |
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[44] | 26 | vhdl->set_body (""); |
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| 27 | vhdl->set_body (" -- predict"); |
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[4] | 28 | |
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| 29 | for (uint32_t i=0; i<_param._nb_prediction; i++) |
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| 30 | { |
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[44] | 31 | string meta_predictor_ack = (_param._have_meta_predictor==true)?("in_PREDICT_"+toString(i)+"_PREDICTOR_0_ACK and in_PREDICT_"+toString(i)+"_PREDICTOR_1_ACK"):"'1'"; |
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[4] | 32 | |
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[44] | 33 | vhdl->set_body ("out_PREDICT_"+toString(i)+"_ACK <= "+meta_predictor_ack+" and "+"in_PREDICT_"+toString(i)+"_PREDICTOR_2_ACK;"); |
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[4] | 34 | |
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| 35 | uint32_t index=_param._size_history; |
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| 36 | |
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| 37 | |
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| 38 | if (_param._predictor_2_have_pht) |
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| 39 | { |
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[44] | 40 | vhdl->set_body ("out_PREDICT_"+toString(i)+"_HISTORY"+std_logic_range(index-1,index-_param._predictor_2_pht_size_counter)+" <= in_PREDICT_"+toString(i)+"_PREDICTOR_2_PHT_HISTORY;"); |
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[4] | 41 | index-= _param._predictor_2_pht_size_counter; |
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| 42 | } |
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| 43 | if (_param._predictor_2_have_bht) |
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| 44 | { |
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[44] | 45 | vhdl->set_body ("out_PREDICT_"+toString(i)+"_HISTORY"+std_logic_range(index-1,index-_param._predictor_2_bht_size_shifter)+" <= in_PREDICT_"+toString(i)+"_PREDICTOR_2_BHT_HISTORY;"); |
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[4] | 46 | index-= _param._predictor_2_bht_size_shifter; |
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| 47 | } |
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| 48 | |
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| 49 | if (_param._have_meta_predictor) |
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| 50 | { |
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| 51 | if (_param._predictor_1_have_pht) |
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| 52 | { |
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[44] | 53 | vhdl->set_body ("out_PREDICT_"+toString(i)+"_HISTORY"+std_logic_range(index-1,index-_param._predictor_1_pht_size_counter)+" <= in_PREDICT_"+toString(i)+"_PREDICTOR_1_PHT_HISTORY;"); |
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[4] | 54 | index-= _param._predictor_1_pht_size_counter; |
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| 55 | } |
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| 56 | if (_param._predictor_1_have_bht) |
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| 57 | { |
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[44] | 58 | vhdl->set_body ("out_PREDICT_"+toString(i)+"_HISTORY"+std_logic_range(index-1,index-_param._predictor_1_bht_size_shifter)+" <= in_PREDICT_"+toString(i)+"_PREDICTOR_1_BHT_HISTORY;"); |
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[4] | 59 | index-= _param._predictor_1_bht_size_shifter; |
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| 60 | } |
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| 61 | |
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| 62 | if (_param._predictor_0_have_pht) |
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| 63 | { |
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[44] | 64 | vhdl->set_body ("out_PREDICT_"+toString(i)+"_HISTORY"+std_logic_range(index-1,index-_param._predictor_0_pht_size_counter)+" <= in_PREDICT_"+toString(i)+"_PREDICTOR_0_PHT_HISTORY;"); |
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[4] | 65 | index-= _param._predictor_0_pht_size_counter; |
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| 66 | } |
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| 67 | if (_param._predictor_0_have_bht) |
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| 68 | { |
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[44] | 69 | vhdl->set_body ("out_PREDICT_"+toString(i)+"_HISTORY"+std_logic_range(index-1,index-_param._predictor_0_bht_size_shifter)+" <= in_PREDICT_"+toString(i)+"_PREDICTOR_0_BHT_HISTORY;"); |
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[4] | 70 | index-= _param._predictor_0_bht_size_shifter; |
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| 71 | } |
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| 72 | } |
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| 73 | |
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| 74 | // direction of prediction |
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[44] | 75 | vhdl->set_body (""); |
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[4] | 76 | if (_param._have_meta_predictor) |
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[44] | 77 | vhdl->set_body ("out_PREDICT_"+toString(i)+"_DIRECTION <= predict_"+toString(i)+"_predictor_0_direction when predict_"+toString(i)+"_predictor_2_direction='0' else predict_"+toString(i)+"_predictor_1_direction;"); |
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[4] | 78 | else |
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[44] | 79 | vhdl->set_body ("out_PREDICT_"+toString(i)+"_DIRECTION <= predict_"+toString(i)+"_predictor_2_direction;"); |
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[4] | 80 | } |
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| 81 | |
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| 82 | // Interface - branch_complete |
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| 83 | |
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[44] | 84 | vhdl->set_body (""); |
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| 85 | vhdl->set_body (" -- branch_complete"); |
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[4] | 86 | for (uint32_t i=0; i<_param._nb_branch_complete; i++) |
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| 87 | { |
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[5] | 88 | // branch_complete_predictor_2 val and directionn |
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| 89 | if (_param._have_meta_predictor) |
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| 90 | { |
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[44] | 91 | vhdl->set_body ("out_BRANCH_COMPLETE_"+toString(i)+"_PREDICTOR_2_VAL <= (branch_complete_"+toString(i)+"_predictor_0_direction xor branch_complete_"+toString(i)+"_predictor_1_direction) and "+"in_BRANCH_COMPLETE_"+toString(i)+"_VAL;"); |
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| 92 | vhdl->set_body ("out_BRANCH_COMPLETE_"+toString(i)+"_PREDICTOR_2_DIRECTION <= (branch_complete_"+toString(i)+"_predictor_0_direction and not in_BRANCH_COMPLETE_"+toString(i)+"_DIRECTION) or (branch_complete_"+toString(i)+"_predictor_1_direction and in_BRANCH_COMPLETE_"+toString(i)+"_DIRECTION);"); |
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[5] | 93 | } |
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| 94 | |
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[44] | 95 | string meta_predictor_ack = (_param._have_meta_predictor==true)?("in_BRANCH_COMPLETE_"+toString(i)+"_PREDICTOR_0_ACK and in_BRANCH_COMPLETE_"+toString(i)+"_PREDICTOR_1_ACK"):"'1'"; |
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[4] | 96 | |
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[44] | 97 | vhdl->set_body ("out_BRANCH_COMPLETE_"+toString(i)+"_ACK <= "+meta_predictor_ack+" and "+"in_BRANCH_COMPLETE_"+toString(i)+"_PREDICTOR_2_ACK;"); |
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[4] | 98 | |
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| 99 | uint32_t index=_param._size_history; |
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| 100 | |
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| 101 | if (_param._predictor_2_have_pht) |
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| 102 | { |
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[44] | 103 | vhdl->set_body ("out_BRANCH_COMPLETE_"+toString(i)+"_PREDICTOR_2_PHT_HISTORY <= in_BRANCH_COMPLETE_"+toString(i)+"_HISTORY"+std_logic_range(index-1,index-_param._predictor_2_pht_size_counter)+";"); |
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[4] | 104 | index-= _param._predictor_2_pht_size_counter; |
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| 105 | } |
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| 106 | if (_param._predictor_2_have_bht) |
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| 107 | { |
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[44] | 108 | vhdl->set_body ("out_BRANCH_COMPLETE_"+toString(i)+"_PREDICTOR_2_BHT_HISTORY <= in_BRANCH_COMPLETE_"+toString(i)+"_HISTORY"+std_logic_range(index-1,index-_param._predictor_2_bht_size_shifter)+";"); |
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[4] | 109 | index-= _param._predictor_2_bht_size_shifter; |
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| 110 | } |
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| 111 | |
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| 112 | if (_param._have_meta_predictor) |
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| 113 | { |
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| 114 | if (_param._predictor_1_have_pht) |
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| 115 | { |
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[44] | 116 | vhdl->set_body ("out_BRANCH_COMPLETE_"+toString(i)+"_PREDICTOR_1_PHT_HISTORY <= in_BRANCH_COMPLETE_"+toString(i)+"_HISTORY"+std_logic_range(index-1,index-_param._predictor_1_pht_size_counter)+";"); |
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[4] | 117 | index-= _param._predictor_1_pht_size_counter; |
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| 118 | } |
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| 119 | if (_param._predictor_1_have_bht) |
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| 120 | { |
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[44] | 121 | vhdl->set_body ("out_BRANCH_COMPLETE_"+toString(i)+"_PREDICTOR_1_BHT_HISTORY <= in_BRANCH_COMPLETE_"+toString(i)+"_HISTORY"+std_logic_range(index-1,index-_param._predictor_1_bht_size_shifter)+";"); |
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[4] | 122 | index-= _param._predictor_1_bht_size_shifter; |
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| 123 | } |
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| 124 | |
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| 125 | if (_param._predictor_0_have_pht) |
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| 126 | { |
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[44] | 127 | vhdl->set_body ("out_BRANCH_COMPLETE_"+toString(i)+"_PREDICTOR_0_PHT_HISTORY <= in_BRANCH_COMPLETE_"+toString(i)+"_HISTORY"+std_logic_range(index-1,index-_param._predictor_0_pht_size_counter)+";"); |
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[4] | 128 | index-= _param._predictor_0_pht_size_counter; |
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| 129 | } |
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| 130 | if (_param._predictor_0_have_bht) |
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| 131 | { |
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[44] | 132 | vhdl->set_body ("out_BRANCH_COMPLETE_"+toString(i)+"_PREDICTOR_0_BHT_HISTORY <= in_BRANCH_COMPLETE_"+toString(i)+"_HISTORY"+std_logic_range(index-1,index-_param._predictor_0_bht_size_shifter)+";"); |
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[4] | 133 | index-= _param._predictor_0_bht_size_shifter; |
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| 134 | } |
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| 135 | } |
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| 136 | } |
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| 137 | |
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| 138 | log_printf(FUNC,Meta_Predictor_Glue,"vhdl_body","End"); |
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| 139 | }; |
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| 140 | |
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| 141 | }; // end namespace meta_predictor_glue |
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| 142 | }; // end namespace meta_predictor |
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| 143 | |
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[48] | 144 | }; // end namespace core |
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| 145 | }; // end namespace multi_front_end |
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| 146 | }; // end namespace front_end |
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| 147 | }; // end namespace prediction_unit |
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| 148 | }; // end namespace direction |
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| 149 | |
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| 150 | |
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[4] | 151 | }; // end namespace behavioural |
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| 152 | }; // end namespace morpheo |
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| 153 | #endif |
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