Antoine Pitrou <pit...@free.fr> added the comment:

You should disassemble the output (or produce assembler from gcc) and check 
that the various indirect jumps at the end of each case block don't get merged 
into a single shared indirect jump.

Or perhaps it's simply that regular expression matching isn't really sensitive 
to bytecode dispatch overhead.

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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue7593>
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