Qiskit / qiskit / 17163279752

88%

main: 88%

Build Type

Pull #14940

github

Committed by mergify[bot]

Commit Message

Fix VF2 layout allocation with idle qubits (#14938)

The two VF2 passes failed to allocate completely idle qubits into the
`Layout` objects they returned.  While the mapping doesn't really _mean_
much, it's important for the rest of the pipeline that a `Layout` object
is a complete layout for the incoming virtuals, even if some of the
choices are arbitrary.

This typically appeared to users via calls to
`TranspileLayout.initial_index_layout(filter_ancillas=True)` bugging
out, but really anything inspecting the `Layout` before that was
susceptible.

(cherry picked from commit 2577bc182)

Pull Request Pull Request #14940: Fix VF2 layout allocation with idle qubits (backport #14938)

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10 of 10 new or added lines in 3 files covered. (100.0%)

18 existing lines in 4 files now uncovered.

80027 of 91206 relevant lines covered (87.74%)

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