Visible to Intel only — GUID: dmm1489537751098
Ixiasoft
Visible to Intel only — GUID: dmm1489537751098
Ixiasoft
1.2.155. USE_HIGH_SPEED_ADDER
Tells the Compiler whether to use high speed adder circuitry to implement arithmetic functions or not. This option is useful for improving the performance of the design when set to On and minimizing the total number of HCells used in the design when set to Off. This option applies to HardCopy series devices only. It can only be used as a project-wide option. This option defaults to Auto, which has the same behavior as On when the Optimization Technique is set to Speed or Balanced, and as Off when the Optimization Technique is set to Area.
Type
Enumeration
Values
- Auto
- Off
- On
Device Support
- HardCopy II
- HardCopy III
- HardCopy IV
Notes
This assignment is included in the Analysis & Synthesis report.
This assignment supports synthesis wildcards.
Syntax
set_global_assignment -name USE_HIGH_SPEED_ADDER <value>
set_global_assignment -name USE_HIGH_SPEED_ADDER -entity <entity name> <value>
set_instance_assignment -name USE_HIGH_SPEED_ADDER -to <to> -entity <entity name> <value>
Default Value
Auto
Example
set_global_assignment -name use_high_speed_adder off