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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

  •  Hi Nilesh,

    When you use irun to compile/elab/simulate, are you using the same coverage options (besides the covtest option)?  Make sure that the type of coverage being specified (block,expression, fsm, functional, as well as any options specified in a coverage configuration file) is the same for all tests for the subblocks that you would like to merge. 

    Can you verify the inclusion of the module named "XYZ" by doing the following?

     

    load_test test2

    report_tabular_summary -module *

     

    The above should result in a listing of all modules that are found in test2.  You can also replace the -module argument with -instance to get an instance list of everything found in test2.  Try the same for test1.

    Please keep us updated on your progress.

     

    Best regards,

    Mickey

Reply

  •  Hi Nilesh,

    When you use irun to compile/elab/simulate, are you using the same coverage options (besides the covtest option)?  Make sure that the type of coverage being specified (block,expression, fsm, functional, as well as any options specified in a coverage configuration file) is the same for all tests for the subblocks that you would like to merge. 

    Can you verify the inclusion of the module named "XYZ" by doing the following?

     

    load_test test2

    report_tabular_summary -module *

     

    The above should result in a listing of all modules that are found in test2.  You can also replace the -module argument with -instance to get an instance list of everything found in test2.  Try the same for test1.

    Please keep us updated on your progress.

     

    Best regards,

    Mickey

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