Changeset 111 for trunk/IPs/systemC/processor/Morpheo/Behavioural/Core/Multi_Front_end/Front_end/Prediction_unit/Direction/Meta_Predictor/src/Parameters.cpp

Timestamp:

Feb 27, 2009, 7:37:40 PM (15 years ago)

Author:

rosiere

Message:

1) Decod_queue : multi implementation (one_fifo, multi_fifo)
2) Issue_queue : multi implementation (in_order, out_of_order)
3) Direction : Add Meta predictor
4) Context_State : re add Branch_complete, More priority to Load miss (is not speculative)
5) Return_Address_Stack : update reg_PREDICT pointer on decod miss prediction
6) UPT : Fix bug in multi event
7) Prediction_glue : in read_stack case, insert in UPT pc_next
8) Rename select : when rob have an event (need flush), read_r{a,b,c} and write_r{d,e} is set at 0

File:

• trunk/IPs/systemC/processor/Morpheo/Behavioural/Core/Multi_Front_end/Front_end/Prediction_unit/Direction/Meta_Predictor/src/Parameters.cpp (modified) (4 diffs)

trunk/IPs/systemC/processor/Morpheo/Behavioural/Core/Multi_Front_end/Front_end/Prediction_unit/Direction/Meta_Predictor/src/Parameters.cpp

@@ -7 +7 @@
 
 #include "Behavioural/Core/Multi_Front_end/Front_end/Prediction_unit/Direction/Meta_Predictor/include/Parameters.h"
+#include "Behavioural/include/Allocation.h"
 
 namespace morpheo {
@@ -20 +21 @@
 #undef  FUNCTION
 #define FUNCTION "Meta_Predictor::Parameters"
-  Parameters::Parameters (bool is_toplevel)
+  Parameters::Parameters (uint32_t nb_inst_predict           ,
+                          uint32_t nb_inst_update            ,
+                          uint32_t size_address              ,
+                          bool     have_bht               [3],
+                          uint32_t bht_size_shifter       [3],
+                          uint32_t bht_nb_shifter         [3],
+                          bool     have_pht               [3],
+                          uint32_t pht_size_counter       [3],
+                          uint32_t pht_nb_counter         [3],
+                          uint32_t pht_size_address_share [3],
+                          bool     is_toplevel)
   {
     log_begin(Meta_Predictor,FUNCTION);
 
+    _nb_inst_predict            = nb_inst_predict           ;
+    _nb_inst_update             = nb_inst_update            ;
+    _size_address               = size_address              ;
+    for (uint32_t i=0; i<3; ++i)
+      {
+    _have_bht               [i] =                 have_bht               [i];
+    _bht_size_shifter       [i] = (_have_bht [i])?bht_size_shifter       [i]:0;
+    _bht_nb_shifter         [i] = (_have_bht [i])?bht_nb_shifter         [i]:0;
+    _have_pht               [i] =                 have_pht               [i];
+    _pht_size_counter       [i] = (_have_pht [i])?pht_size_counter       [i]:0;
+    _pht_nb_counter         [i] = (_have_pht [i])?pht_nb_counter         [i]:0;
+    _pht_size_address_share [i] = (_have_bht[i] and _have_pht [i])?pht_size_address_share [i]:0;
+      }
+
     test();
 
+    _have_meta_predictor        = (_have_bht [2] or _have_pht [2]);
+    _nb_predictor               = (_have_meta_predictor)?3:1;
+    
+    ALLOC1(_predictor_update_on_prediction,bool    , _nb_predictor);
+    ALLOC1(_predictor_size_history        ,uint32_t, _nb_predictor);
+    
+    // All predictor can update on prediction ....
+    for (uint32_t i=0; i<_nb_predictor; ++i)
+      _predictor_update_on_prediction [i] = true;
+
+    // ... But the selector prediction can't
+    if (_have_meta_predictor)
+      _predictor_update_on_prediction [_nb_predictor-1] = false;
+
+    _param_two_level_branch_predictor = new morpheo::behavioural::core::multi_front_end::front_end::prediction_unit::direction::meta_predictor::two_level_branch_predictor::Parameters * [_nb_predictor];
+    for (uint32_t i=0; i<_nb_predictor; ++i)
+      {
+        _param_two_level_branch_predictor [i] = new morpheo::behavioural::core::multi_front_end::front_end::prediction_unit::direction::meta_predictor::two_level_branch_predictor::Parameters
+          (_nb_inst_predict                   ,
+           _nb_inst_update                    ,
+           _size_address                      ,
+           _have_bht                       [i],
+           _bht_size_shifter               [i],
+           _bht_nb_shifter                 [i],
+           _have_pht                       [i],
+           _pht_size_counter               [i],
+           _pht_nb_counter                 [i],
+           _pht_size_address_share         [i],
+           _predictor_update_on_prediction [i]
+           );
+
+        _predictor_size_history [i] = _param_two_level_branch_predictor [i]->_size_history;
+      }
+
+    _param_glue = new morpheo::behavioural::core::multi_front_end::front_end::prediction_unit::direction::meta_predictor::meta_predictor_glue::Parameters  
+      (
+       _nb_inst_predict               ,
+       _nb_inst_update                ,
+       _nb_predictor                  ,
+       _predictor_size_history        ,
+       _predictor_update_on_prediction
+       );
+    _size_history = _param_glue->_size_history;
+    
     if (is_toplevel)
       {
@@ -48 +117 @@
   {
     log_begin(Meta_Predictor,FUNCTION);
+
+    DELETE1(_param_two_level_branch_predictor, _nb_predictor);
+
+    DELETE1(_predictor_size_history          , _nb_predictor);
+    DELETE1(_predictor_update_on_prediction  , _nb_predictor);
+
     log_end(Meta_Predictor,FUNCTION);
   };
@@ -56 +131 @@
   {
     log_begin(Meta_Predictor,FUNCTION);
+
+    COPY(_param_glue);
+    for (uint32_t i=0; i<_nb_predictor; ++i)
+      COPY(_param_two_level_branch_predictor [i]);
+
     log_end(Meta_Predictor,FUNCTION);
   };