Intel® Quartus® Prime Pro Edition User Guide: Timing Analyzer

ID 683243
Date 10/04/2021
Public

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2.5.1.10. Report Retiming Restrictions

The Timing Analyzer's Reports > Design Metrics > Report Retiming Restrictions... command allows you to report the occurrences of design conditions that restrict Hyper-Retiming, such as Power-up "Care" restrictions, and don’t touch or preserve attributes for each port. You can refer to this report to improve the circuit and remove retiming restrictions that limit circuit performance. report_retiming_restrictions is the equivalent scripting command.
Figure 64. Report Retiming Restrictions Report

For table entries with two number values, the number in parentheses indicates the number of retiming restrictions in the specific entity alone. The number listed outside of parentheses indicates the number of retiming restrictions in the specific entity and all of its sub-entities in the hierarchy.