Qiskit / qiskit / 17164998928

88%

main: 88%

Build Type

push

github

Committed by web-flow

Commit Message

Fix VF2 layout allocation with idle qubits (#14938) (#14940)

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)

Co-authored-by: Jake Lishman <jake.lishman@ibm.com>

Run Details

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

9 existing lines in 3 files now uncovered.

80030 of 91206 relevant lines covered (87.75%)

511514.36 hits per line