[Gems-users] Instruction statistics

[Nikolas Galanis <nikolaos@xxxxxxxxxx>]

Hi all,

I need to gather some statistics for every instruction. Statistics 
include whether the instruction got an I-TLB of D-TLB miss, an L1 iCache 
or dCache miss, an L2 Cache miss etc. I imagined that the best moment to 
gather these statistics would be just before each instruction retires. 
So I added some variables inside the dynamic_inst_t class which I update 
whenever such an event takes place.
However, by the time the instruction reaches the retire stage, none of 
these variables is set. I believe that this happens because every time 
such an event takes place the instruction is squashed and reissued. Am I 
right in what I am saying?
Is there a way to gather such execution statistics for each instruction?

Thanks in advance,

Nikolas