The issues about "optimized away during sweep"

Question

Hi there, I have a question about optimized away during sweep. You know I have one same project which didn't meet this issue when I used it for Cyclone V and Quartus version is QII13.0. But I met this optimization issue when I compiled this project after I change device from CV to C10GX, and changed Quartus version from QII13.0 to Quartus Prime Pro 22.4. Then I got several Entity in the message window "Hierarchies optimized away during sweep", as the attached image shows. Why can this happen?

BTW, I also have the issue of couldn't reply in Intel forum.

shengn_altera · Answer

Hi,Hierarchies Optimized Away During Sweep is enhanced synthesis reports to provide information about entities that were optimized away during synthesis starting from version 21.3 check this link https://wcm-stg.intel.com/content/www/us/en/docs/programmable/641306/21-3/new-features-and-enhancements.htmlYou can go to Compilation Report, Synthesis -&gt; Partition " " -&gt; Optimization Results check for optimization reason. Thanks,Best Regards,Sheng

shengn_altera · Answer

Hi,Do you have any further concern on this thread?Thanks,Best Regards,Sheng

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The issues about "optimized away during sweep"

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