qiskit.transpiler.passes.CXDirection.run

CXDirection.run(dag)

Run the GateDirection pass on dag.

Flips the cx nodes to match the directed coupling map. Modifies the input dag.

Parameters

dag (DAGCircuit) – DAG to map.

Returns

The rearranged dag for the coupling map

Return type

DAGCircuit

Raises

TranspilerError – If the circuit cannot be mapped just by flipping the cx nodes.