Qiskit / qiskit / 10746409644

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github

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Commit Message

Fully port InverseCancellation to Rust (#13013)

* Fully port InverseCancellation to Rust

This commit builds off of #12959 and the other data model in Rust
infrastructure and migrates the InverseCancellation pass to
operate fully in Rust. The full path of the transpiler pass now never
leaves Rust until it has finished modifying the DAGCircuit. There is
still some python interaction necessary to handle parts of the data
model that are still in Python, mainly for handling parameter
expressions. But otherwise the entirety of the pass
operates in rust now.

This is just a first pass at the migration here, it moves the pass to
use loops in rust. The next steps here are to look at operating
the pass in parallel. There is no data dependency between the
optimizations being done for different inverse gates/pairs so we should
be able to the throughput of the pass by leveraging multithreading to
handle each inverse option in parallel. This commit does not attempt
this though, because of the Python dependency and also the data
structures around gates and the dag aren't really setup for
multithreading yet and there likely will need to be some work to
support that.

Fixes #12271
Part of #12208

* Remove temporary variable for chunk empty check

* Destructure gate pairs

* Rework short circuit logic

Run Details

181 of 189 new or added lines in 5 files covered. (95.77%)

14 existing lines in 4 files now uncovered.

72877 of 81746 relevant lines covered (89.15%)

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