Dylan MacKenzie bb6c249f99 Speed up IntRange::from_pat ...

Previously, this method called the more general `pat_constructor`
function, which can return other pattern variants besides `IntRange`.
Then it throws away any non-`IntRange` variants. Specialize it so work
is only done when it could result in an `IntRange`.

2020-09-26 20:00:54 -07:00

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src

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Cargo.toml

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