21.8.4 check_constraints
(Ask a Question)Description
Checks all timing constraints in the current scenario for validity. This command performs the same checks as when the constraint is entered through SDC or Tcl.
When a constraint file is checked, the Constraint Checker does the following:
- Checks the syntax.
- Compares the design objects
(pins, cells, nets, ports) in the constraint file versus the design objects
in the netlist (RTL or post-layout ADL netlist). Any discrepancy (for
example, constraints on a design object which does not exist in the netlist)
are flagged as errors and reported in the
*_sdc.logfile.
check_constraintsSupported Families
| PolarFire® |
| PolarFire SoC |
| SmartFusion® 2 |
| IGLOO® 2 |
| RTG4™ |
Example
The following example checks timing constraints in the current scenario.
check_constraints