[issue42093] Add opcode cache for LOAD_ATTR

[Guido van Rossum]

Guido van Rossum <guido at python.org> added the comment:

Hm, I was thinking to recognize the specific type of descriptor used by slots and cache only that. Though we would still have to consider updates to C.__dict__ (that's handled by looking at the dict version right?).

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue42093>
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