Altera® Quartus® Prime Standard Edition Settings File Reference Manual

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

1.2.7. ALLOW_SHIFT_REGISTER_MERGING_ACROSS_HIERARCHIES

Allows the Compiler to take shift registers from different hierarchies of the design and put them in the same RAM.

Type

Enumeration

Values

  • Always
  • Auto
  • Off

Device Support

  • Arria 10
  • Arria GX
  • Arria II GX
  • Arria II GZ
  • Arria V
  • Arria V GZ
  • Cyclone
  • Cyclone 10 LP
  • Cyclone II
  • Cyclone III
  • Cyclone III LS
  • Cyclone IV E
  • Cyclone IV GX
  • Cyclone V
  • HardCopy II
  • HardCopy III
  • HardCopy IV
  • MAX 10
  • MAX II
  • MAX V
  • Stratix
  • Stratix GX
  • Stratix II
  • Stratix II GX
  • Stratix III
  • Stratix IV
  • Stratix V

Notes

This assignment is included in the Analysis & Synthesis report.

This assignment supports synthesis wildcards.

Syntax


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

Default Value

Auto

Example


		set_global_assignment -name allow_shift_register_merging_across_hierarchies off
		set_instance_assignment -name allow_shift_register_merging_across_hierarchies off -to foo
	

See Also

Auto Shift Register Replacement