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Merging code coverage from two different test benches

Nilesh Goswami
Hi

I am facing issue while merging code coverage from two different test benches.

Here is my testbench and tools :

One test bench(A) is written in SV and other test bench(B) is written in Verilog.

I am using IUS62 to run test cases and ICCR to merge coverage and generate report.

Both testbenches are pointing to same RTL core but the hierarchy is different.

I ran test case in both the environment and tried to merge code coverage report.

Here, ICCR is not loading the test because different model file (<checksum>.model) are generated.

I would like to know which are the points I should take care while running the test case and while merging coverage.

Please let me know your inputs.

Thanks & Regards,

Nilesh Goswami
Parents

  • Thanks Tim,

    I did one additional thing by refering help. i.e. I set dut module name by using covdut option of irun command in both testbanches.

    Now, models files are generated same. So, I think I should be able to merge.

    However, it is loading both data base but I am still facing merging issue.

     

    Even I tried with option which you mentioned with iccr.

     

    commands used with iccr :

    ==================================== 

    set_dut_modules XYZ

    load_test test1 test2

    merge test1 test2 -ouput temp

    ====================================

    following message is displayed : 

    ======================================================================== 

    iccr: *W,MGDNFT: There is no instance of DUT "XYZ" present in this secondary test. As a result, the merging of this DUT for this test is not performed.

    ========================================================================

     

    Please let me know if something is wrong/missing, here.

     

    Regards,

    Nilesh Goswami 

Reply

  • Thanks Tim,

    I did one additional thing by refering help. i.e. I set dut module name by using covdut option of irun command in both testbanches.

    Now, models files are generated same. So, I think I should be able to merge.

    However, it is loading both data base but I am still facing merging issue.

     

    Even I tried with option which you mentioned with iccr.

     

    commands used with iccr :

    ==================================== 

    set_dut_modules XYZ

    load_test test1 test2

    merge test1 test2 -ouput temp

    ====================================

    following message is displayed : 

    ======================================================================== 

    iccr: *W,MGDNFT: There is no instance of DUT "XYZ" present in this secondary test. As a result, the merging of this DUT for this test is not performed.

    ========================================================================

     

    Please let me know if something is wrong/missing, here.

     

    Regards,

    Nilesh Goswami 

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