Intel® Quartus® Prime Standard Edition User Guide: Design Optimization

ID 683230
Date 11/12/2018
Document Table of Contents Evaluate Physical Synthesis Results

If you enable physical synthesis options, the Compiler can duplicate and retime registers, and modify combinatorial logic during synthesis. After compilation, review the Optimization Results reports in the Analysis & Synthesis section. The reports list the optimizations performed by the physical synthesis optimizations, such as register duplication, retiming, and removal. These reports can be found in the Compilation Report panel.
Figure 12. Optimization Results Reports

When you enable physical synthesis, the compilation messages include a information about the physical synthesis algorithm performance improvement. The reported improvement is the sum of the largest improvement in each timing-critical clock domain. Although typically similar, the values for the slack improvements vary per compilation due to the random starting point of compilation algorithms.