def transpile_circuit(circuit, transpile_config):
"""Select a PassManager and run a single circuit through it.
Args:
circuit (QuantumCircuit): circuit to transpile
transpile_config (TranspileConfig): configuration dictating how to transpile
Returns:
QuantumCircuit: transpiled circuit
"""
# if the pass manager is not already selected, choose an appropriate one.
if transpile_config.pass_manager:
pass_manager = transpile_config.pass_manager
elif transpile_config.coupling_map:
pass_manager = default_pass_manager(transpile_config.basis_gates,
transpile_config.coupling_map,
transpile_config.initial_layout,
transpile_config.seed_transpiler)
else:
pass_manager = default_pass_manager_simulator(
transpile_config.basis_gates)
return pass_manager.run(circuit)
def transpile_dag(dag, basis_gates=None, coupling_map=None,
initial_layout=None, seed_mapper=None, pass_manager=None):
"""Deprecated - Use qiskit.compiler.transpile for transpiling from
circuits to circuits.
Transform a dag circuit into another dag circuit
(transpile), through consecutive passes on the dag.
Args:
dag (DAGCircuit): dag circuit to transform via transpilation
basis_gates (list[str]): list of basis gate names supported by the
target. Default: ['u1','u2','u3','cx','id']
coupling_map (list): A graph of coupling::
[
[control0(int), target0(int)],
[control1(int), target1(int)],
]
eg. [[0, 2], [1, 2], [1, 3], [3, 4]}
initial_layout (Layout or None): A layout object
seed_mapper (int): random seed_mapper for the swap mapper
pass_manager (PassManager): pass manager instance for the transpilation process
If None, a default set of passes are run.
Otherwise, the passes defined in it will run.
If contains no passes in it, no dag transformations occur.
Returns:
DAGCircuit: transformed dag
"""
warnings.warn("transpile_dag has been deprecated and will be removed in the "
"0.9 release. Circuits can be transpiled directly to other "
"circuits with the transpile function.", DeprecationWarning)
if basis_gates is None:
basis_gates = ['u1', 'u2', 'u3', 'cx', 'id']
if pass_manager is None:
# default set of passes
# if a coupling map is given compile to the map
if coupling_map:
pass_manager = default_pass_manager(basis_gates,
CouplingMap(coupling_map),
initial_layout,
seed_transpiler=seed_mapper)
else:
pass_manager = default_pass_manager_simulator(basis_gates)
# run the passes specified by the pass manager
# TODO return the property set too. See #1086
name = dag.name
circuit = dag_to_circuit(dag)
circuit = pass_manager.run(circuit)
dag = circuit_to_dag(circuit)
dag.name = name
return dag
def transpile_circuit(circuit, transpile_config):
"""Select a PassManager and run a single circuit through it.
Args:
circuit (QuantumCircuit): circuit to transpile
transpile_config (TranspileConfig): configuration dictating how to transpile
Returns:
QuantumCircuit: transpiled circuit
Raises:
TranspilerError: if transpile_config is not valid or transpilation incurs error
"""
# if the pass manager is not already selected, choose an appropriate one.
if transpile_config.pass_manager:
pass_manager = transpile_config.pass_manager
elif transpile_config.optimization_level is not None:
level = transpile_config.optimization_level
if level == 0:
pass_manager = level_0_pass_manager(transpile_config)
elif level == 1:
pass_manager = level_1_pass_manager(transpile_config)
elif level == 2:
pass_manager = level_2_pass_manager(transpile_config)
elif level == 3:
pass_manager = level_3_pass_manager(transpile_config)
else:
raise TranspilerError("optimization_level can range from 0 to 3.")
# legacy behavior
elif transpile_config.coupling_map:
pass_manager = default_pass_manager(transpile_config)
else:
pass_manager = default_pass_manager_simulator(transpile_config)
return pass_manager.run(circuit)