[issue26342] Faster bit ops for single-digit positive longs

[Yury Selivanov]

Yury Selivanov added the comment:

> with patch: 0.404usec      without patch: 0.41

Sorry, I made a typo: these results should be flipped -- 0.41-0.404 is the overhead of the fastpath's 'if' check.  I'd say it's a pretty small overhead -- we already optimize all other long ops, including bit inversion.

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<http://bugs.python.org/issue26342>
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