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BasisTranslator to only bind substitutions for parameterized gates. #4636

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merged 3 commits into from
Jul 8, 2020
Merged

BasisTranslator to only bind substitutions for parameterized gates. #4636

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04dc0ed
BasisTranslator to only bind substitutions for parameterized gates.
kdk Jul 1, 2020
0fb886a
Merge branch 'master' into basis-translator-only-bind-as-needed
mergify[bot] Jul 7, 2020
ae6abdd
Merge branch 'master' into basis-translator-only-bind-as-needed
mtreinish Jul 7, 2020
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19 changes: 11 additions & 8 deletions qiskit/transpiler/passes/basis/basis_translator.py
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Original file line number Diff line number Diff line change
Expand Up @@ -134,16 +134,19 @@ def run(self, dag):
node.op.params, node.op.name,
target_params, target_dag))

# Convert target to circ and back to assign_parameters, since
# DAGCircuits won't have a ParameterTable.
from qiskit.converters import dag_to_circuit, circuit_to_dag
target_circuit = dag_to_circuit(target_dag)
if node.op.params:
# Convert target to circ and back to assign_parameters, since
# DAGCircuits won't have a ParameterTable.
from qiskit.converters import dag_to_circuit, circuit_to_dag
target_circuit = dag_to_circuit(target_dag)

target_circuit.assign_parameters(
dict(zip_longest(target_params, node.op.params)),
inplace=True)
target_circuit.assign_parameters(
dict(zip_longest(target_params, node.op.params)),
inplace=True)

bound_target_dag = circuit_to_dag(target_circuit)
bound_target_dag = circuit_to_dag(target_circuit)
else:
bound_target_dag = target_dag

if (len(bound_target_dag.op_nodes()) == 1
and len(bound_target_dag.op_nodes()[0].qargs) == len(node.qargs)):
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