qiskit/releasenotes/notes/2.0/add-option-collect-from-bac...

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---
features_transpiler:
- |
Added a new option, ``collect_from_back``, to
:class:`~qiskit.transpiler.passes.CollectMultiQBlocks`.
When set to ``True``, the blocks are collected in the reverse direction,
from the outputs towards the inputs of the circuit. The blocks are still
reported following the normal topological order.
This leads to an additional flexibility provided by the pass, and
additional optimization opportunities when combined with a circuit
resynthesis method.