[issue4896] Faster why variable manipulation in ceval.c

[Raymond Hettinger]

Raymond Hettinger added the comment:

Before evaluating this further, the timings should be updated for the current 3.5 code and using the various compilers for the difference OSes.  Also, it would be nice to run Antoine's suite of benchmarks.

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nosy: +haypo, rhettinger
priority: normal -> low
versions:  -Python 3.4

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