Altera® Quartus® Prime Standard Edition Settings File Reference Manual

ID 683084
Date 5/08/2017
Public
Document Table of Contents

1.2.116. PRESERVE_REGISTER

Prevents a register from minimizing away during synthesis and prevents sequential netlist optimizations. Sequential netlist optimizations can eliminate redundant registers and registers with constant drivers.

Type

Boolean

Device Support

This setting can be used in projects targeting any Altera device family.

Notes

This assignment supports Fitter wildcards.

This assignment supports synthesis wildcards.

Syntax


		set_global_assignment -name PRESERVE_REGISTER -entity <entity name> <value>
		set_instance_assignment -name PRESERVE_REGISTER -to <to> -entity <entity name> <value>
	

Example


		set_instance_assignment -name preserve_register on -to foo