HoareOptimizer
qiskit.transpiler.passes.HoareOptimizer(*args, **kwargs)
Bases: TransformationPass
This is a transpiler pass using Hoare logic circuit optimization. The inner workings of this are detailed in: https://arxiv.org/abs/1810.00375 (opens in a new tab)
Parameters
size (int (opens in a new tab)) – size of gate cache, in number of gates
Raises
MissingOptionalLibraryError – if unable to import z3 solver
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
- passmanager_ir (Any (opens in a new tab)) – Qiskit IR to optimize.
- state (PassManagerState) – State associated with workflow execution by the pass manager itself.
- callback (Callable (opens in a new tab) | None) – A callback function which is caller per execution of optimization task.
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
run
run(dag)
Parameters
dag (DAGCircuit) – the directed acyclic graph to run on.
Returns
Transformed DAG.
Return type
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