Yury Selivanov <yseliva...@gmail.com> added the comment:

> With the 3.7 beta deadline just around the corner, 3.8 will be the next 
> opportunity to reconsider this idea.

Nick, Ned, Guido,

Would it be OK if we add this to 3.7beta2?

I feel kind of bad about this one... few thoughts:  

1. The speedup is about 5-10% on macro-benchmarks!  This is significant.

2. Inada-san offered me help with this, and I declined, saying that I plan to 
do more research/experiments and commit it before 3.7.  And I didn't have time 
to do it because of other work I did for CPython.

3. Even though the optimization is invasive, I feel confident about it.  It 
just so happens that whatever modification we do to ceval, it will be covered 
100% with tests or any code you execute.  Any regression or anomaly should 
become apparent almost immediately.

4. We'll have quite a bit of time to see if this works or not.  This isn't a 
new functionality, so we can always pull it from the first RC build if 
necessary.

----------
nosy: +inada.naoki, ned.deily

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