Qiskit / qiskit / 11937368524

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github

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Commit Message

Fix basis_count checking in ConsolidateBlocks (#13463)

The ConsolidateBlocks pass was ported to rust in #13368 and as part of
that implementation a small behavior difference between the rust and
python interfaces was causing the pass to not work correctly with non-CX
gates. The internal 2q decomposer interface stores a sentinel string for
the kak gate which is used to tell the python space constructor use the
python defined gate object. However in the pass code we weren't
factoring this difference in, and for non-CX gates we were evaluating
the basis count as the number of gates with that sentinel value name
(which is almost always zero) and this was preventing the pass from
consolidating many blocks that should have been. This commit fixes this
issue by taking the name from python space and passing it through to the
rust portion of the code and using that for the comparison.

Fixes #13459

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