[issue6133] LOAD_CONST followed by LOAD_ATTR can be optimized to just be a LOAD_COST

[Martin v. Löwis]

Martin v. Löwis <martin at v.loewis.de> added the comment:

-1. const.attr is not necessarily a constant. Indeed, "".join is *not* a
constant.

Furthermore, using this approach will lead to an endless series of types
to be added to marshalling, which is bad. For example, I believe that
current patch breaks on "".__class__

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nosy: +loewis

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