[issue11462] Peephole creates duplicate and unused constants

[Terry J. Reedy]

Terry J. Reedy <tjreedy at udel.edu> added the comment:

Eugene has started work on AST optimizer in #11549

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nosy: +terry.reedy
superseder:  -> Rewrite peephole to work on AST

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<http://bugs.python.org/issue11462>
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