[issue10044] small int optimization

[Antoine Pitrou]

Antoine Pitrou <pitrou at free.fr> added the comment:

> In other words, when producing code for ptr_compare, the compiler is
> allowed to *assume* that a and b point into the same array, and act
> accordingly.

But this assumption doesn't bring *anything*, right?
That is, there is no shortcut way to compute "p - q" or "p > q" when
both point into the same "array".

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<http://bugs.python.org/issue10044>
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