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RemoveFinalMeasurements

qiskit.transpiler.passes.RemoveFinalMeasurements(*args, **kwargs)GitHub(opens in a new tab)

Bases: TransformationPass

Remove final measurements and barriers at the end of a circuit.

This pass removes final barriers and final measurements, as well as all unused classical registers and bits they are connected to. Measurements and barriers are considered final if they are followed by no other operations (aside from other measurements or barriers.)

Classical registers are removed iff they reference at least one bit that has become unused by the circuit as a result of the operation, and all of their other bits are also unused. Separately, classical bits are removed iff they have become unused by the circuit as a result of the operation, or they appear in a removed classical register, but do not appear in a classical register that will remain.


Attributes

is_analysis_pass

Check if the pass is an analysis pass.

If the pass is an AnalysisPass, that means that the pass can analyze the DAG and write the results of that analysis in the property set. Modifications on the DAG are not allowed by this kind of pass.

is_transformation_pass

Check if the pass is a transformation pass.

If the pass is a TransformationPass, that means that the pass can manipulate the DAG, but cannot modify the property set (but it can be read).


Methods

execute

execute(passmanager_ir, state, callback=None)

Execute optimization task for input Qiskit IR.

Parameters

Returns

Optimized Qiskit IR and state of the workflow.

Return type

tuple(opens in a new tab)[Any(opens in a new tab), qiskit.passmanager.compilation_status.PassManagerState]

name

name()

Name of the pass.

Return type

str(opens in a new tab)

run

run(dag)

Run the RemoveFinalMeasurements pass on dag.

Parameters

dag (DAGCircuit) – the DAG to be optimized.

Returns

the optimized DAG.

Return type

DAGCircuit

update_status

update_status(state, run_state)

Update workflow status.

Parameters

  • state (PassManagerState) – Pass manager state to update.
  • run_state (RunState) – Completion status of current task.

Returns

Updated pass manager state.

Return type

PassManagerState

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