why we discard the PRECHARGE cmd here?

[gxflying]

hi sir, I am trying to understand the reason here in command_queue.cc#L85 , why the precharge CMD should be discarded when there is cmd which is in the same bank as the bank the precharge CMD will be issued to ?
before discarding the precharge cmd, should it better to check that the cmds ahead of the precharge cmd will hit the currently opened row of the bank which the precharge cmd will be issued to? because in this sernario, the precharge may cause those cmd a page miss , which should be a hit without the prechage.
could you please help me figure it out ?
thanks and wish your reply

DRAMsim3/src/command_queue.cc

Line 85 in 2981759

return false;