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

ID 683283
Date 9/24/2018
Document Table of Contents Example Step 2—Partition Designer Creates .sdc with Partition-Specific Constraints

The partition designer compiles the design with the .sdc with project-wide constraints and might want to add some additional constraints. In this example, the designer realizes that he or she must specify a false path between the register called reg_in_1 and all destinations in this design block with the wildcard character (such as ” * ”). This constraint applies entirely within the partition and must be exported to the top-level design, so it qualifies for inclusion in the .sdc with partition-specific constraints. The designer first defines the module_A_hierarchy variable and uses it when writing the constraint as follows:
if {![info exists module_A_hierarchy]} {
	set module_A_hierarchy ""
set_false_path -from [get_registers ${module_A_hierarchy}reg_in_1] \
-to [get_registers ${module_A_hierarchy}*]