Two_Level_Branch_Predictor
4       4       *2      # nb_inst_predict       
4       4       *2      # nb_inst_update        
30      30      *2      # size_address          
1       1       +1      # have_bht              
4       4       *4      # bht_size_shifter      
16      16      *4      # bht_nb_shifter        
1	1	+1	# have_pht              
4	4  	*2	# pht_size_counter      
32	32	*4	# pht_nb_counter        
0	2	+1	# pht_size_address_share
1       1       +1      # update_on_prediction