mirror of https://github.com/Qiskit/qiskit.git
29 lines
1.2 KiB
YAML
29 lines
1.2 KiB
YAML
---
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features:
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- |
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A new ``translation_method`` keyword argument has been added to
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:func:`~qiskit.compiler.transpile` to allow selection of the method to be
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used for translating circuits to the available device gates. For example,
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``transpile(circ, backend, translation_method='translator')``. Valid
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choices are:
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* ``'unroller'``: to use the :class:`~qiskit.transpiler.passes.Unroller`
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pass
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* ``'translator'``: to use the
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:class:`~qiskit.transpiler.passes.BasisTranslator` pass.
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* ``'synthesis'``: to use the
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:class:`~qiskit.transpiler.passes.UnitarySynthesis` pass.
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The default value is ``'translator'``.
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upgrade:
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- |
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By default the preset passmanagers in
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:mod:`qiskit.transpiler.preset_passmanagers` are using
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:class:`~qiskit.transpiler.passes.UnrollCustomDefinitions` and
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:class:`~qiskit.transpiler.passes.BasisTranslator` to handle basis changing
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instead of the previous default :class:`~qiskit.transpiler.passes.Unroller`.
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This was done because the new passes are more flexible and allow targeting
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any basis set, however the output may differ. To use the previous default
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you can set the ``translation_method`` kwarg on
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:func:`~qiskit.compiler.transpile` to ``'unroller'``.
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