.. _MULTI_CYCLE_ADD_THROUGH_CONSTRAINTS:

MULTI_CYCLE_ADD_THROUGH_CONSTRAINTS
----------------

This parameter allows LegUp to use -through constraints to create different 
multi-cycle slack on different multi-cycle paths that have different latencies 
but the same source and destination register.

Category
+++++++++

Synthesis

Value Type
+++++++++++

Integer

Valid Values
+++++++++++++

0, 1

Default Value
++++++++++++++

0

Location Where Default is Specified
+++++++++++++++++++++++++++++++++++

``examples/legup.tcl``

Dependencies
+++++++++++++

:ref:`MULTI_CYCLE_REMOVE_REG`

Related parameters:
:ref:`MULTI_CYCLE_DEBUG`, :ref:`MULTI_CYCLE_REMOVE_REG_DIVIDERS`, 
:ref:`MULTI_CYCLE_DUPLICATE_LOAD_REG`, :ref:`MULTI_CYCLE_REMOVE_CMP_REG`,
:ref:`MULTI_CYCLE_DISABLE_REG_MERGING`

Applicable Flows
+++++++++++++++++

Pure hardware flow with no multipumping and no loop pipelining.

Test Status
++++++++++++

Actively in-use

Examples
+++++++++

``set_parameter MULTI_CYCLE_ADD_THROUGH_CONSTRAINTS 1``

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