UnrollCustomDefinitions

class qiskit.transpiler.passes.UnrollCustomDefinitions(*args, **kwargs)

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Bases: TransformationPass

Unrolls instructions with custom definitions.

Parameters

equivalence_library (EquivalenceLibrary) – The equivalence library which will be used by the BasisTranslator pass. (Instructions in this library will not be unrolled by this pass.)
basis_gates (Optional[list[str]]) – Target basis names to unroll to, e.g. ['u3', 'cx']. Ignored if target is also specified.
target (Optional[Target]) –

The Target object corresponding to the compilation

target. When specified, any argument specified for basis_gates is ignored.

min_qubits (int): The minimum number of qubits for operations in the input

dag to translate.

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)

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Execute optimization task for input Qiskit IR.

Parameters

passmanager_ir (Any) – Qiskit IR to optimize.
state (PassManagerState) – State associated with workflow execution by the pass manager itself.
callback (Callable | None) – A callback function which is caller per execution of optimization task.

Returns

Optimized Qiskit IR and state of the workflow.

Return type

tuple[Any, qiskit.passmanager.compilation_status.PassManagerState]

name

name()

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Name of the pass.

Return type

str

run

run(dag)

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Run the UnrollCustomDefinitions pass on dag.

Parameters

dag (DAGCircuit) – input dag

Raises

QiskitError – if unable to unroll given the basis due to undefined
decomposition rules** (such as a bad basis) or **excessive recursion. –

Returns

output unrolled dag

Return type

DAGCircuit

update_status

update_status(state, run_state)

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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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