Qiskit / qiskit / 10326845647

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Build Type

push

github

Committed by web-flow

Commit Message

Use ahash for IndexMap and IndexSet hasher (#12935)

The ahash hasher offers better performace as a drop in replacement for
the stdlib hash algorithm. This is a large reason we use the hashbrown
crate for our HashMap type in Qiskit (along with rayon support). The
indexmap crate doesn't use ahash by default however, so we typically
switch to it anywhere we use IndexMap or IndexSet to match the lookup
performance of hashbrown in places where we need to preserve insertion
order. However, there were a couple of spots where we missed this in the
rust code, this commit corrects these oversights.

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25 existing lines in 4 files now uncovered.

67360 of 75077 relevant lines covered (89.72%)

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