Andy Lester <[email protected]> added the comment:
Re: branch prediction.
The branch
if (c1>=37 && c1<=126)
could just as easily be
if (c1>=0 && c1<=126)
with no other changes to the code. It could be just
if (c1<=126)
if c1 wasn't signed.
As far as branch prediction, we could make it something like
if (c1>=0 && c1<=255)
and expand the table lookup, depending on what the likely inputs are. I could
play around with that some if anyone was interested.
I'm not trying to push on this. Just sharing some thoughts and research.
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<https://bugs.python.org/issue39150>
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