Raymond Hettinger <raymond.hettin...@gmail.com> added the comment:

Updated the title to reflect that the peephole optimizer will likely continue 
to exist but in a much simpler form.  Some complex peephole optimization such 
as constant folding can be handled more easily and more robustly at the AST 
level.

Other minor peephole optimizations such as jump-to-jump simplification as still 
bytecode level optimizations (ones that improve the quality of the generated 
code without visibility to higher level semantics).

----------
title: Rewrite peephole to work on AST -> Build-out an AST optimizer, moving 
some functionality out of the peephole optimizer

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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue11549>
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