mirror of https://github.com/Qiskit/qiskit.git
38 lines
1.2 KiB
YAML
38 lines
1.2 KiB
YAML
---
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features:
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- |
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A new method :meth:`~qiskit.transpiler.PassManager.remove` has been added
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to the :class:`qiskit.transpiler.PassManager` class. This method enables
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removing a pass from a :class:`~qiskit.transpiler.PassManager` instance.
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It works on indexes, similar to
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:meth:`~qiskit.transpiler.PassManager.replace`. For example, to
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remove the :class:`~qiskit.transpiler.passes.RemoveResetInZeroState` pass
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from the pass manager used at optimization level 1:
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.. code-block:: python
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from qiskit.transpiler.preset_passmanagers import level_1_pass_manager
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from qiskit.transpiler.passmanager_config import PassManagerConfig
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pm = level_1_pass_manager(PassManagerConfig())
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pm.draw()
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.. code-block::
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[0] FlowLinear: UnrollCustomDefinitions, BasisTranslator
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[1] FlowLinear: RemoveResetInZeroState
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[2] DoWhile: Depth, FixedPoint, Optimize1qGates, CXCancellation
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The stage ``[1]`` with ``RemoveResetInZeroState`` can be removed like this:
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.. code-block:: python
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pass_manager.remove(1)
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pass_manager.draw()
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.. code-block::
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[0] FlowLinear: UnrollCustomDefinitions, BasisTranslator
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[1] DoWhile: Depth, FixedPoint, Optimize1qGates, CXCancellation
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