[issue24582] Minor branch optimization in set implementation

[Raymond Hettinger]

Raymond Hettinger added the comment:

I believe this patch will make matters worse.  The current pair of tests can essentially be run in parallel and the one with rv==-1 is highly predictable (essentially zero cost).

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priority: normal -> low

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue24582>
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