[Patches] [ python-Patches-1442442 ] Faster list comprehensions

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Patches item #1442442, was opened at 2006-03-03 07:41
Message generated for change (Comment added) made by collinwinter
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Category: Parser/Compiler
Group: Python 2.5
Status: Open
Resolution: None
Priority: 5
Submitted By: Collin Winter (collinwinter)
Assigned to: Nobody/Anonymous (nobody)
Summary: Faster list comprehensions

Initial Comment:
The attached patch results in a 16% speed increase for
list comprehensions. By changing how the LIST_APPEND
opcode works (which was previously totally unused),
it's possible to dramatically simplify the emitted
bytecode for listcomps.

More details are available on my blog:
http://oakwinter.com/code/?p=22.

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>Comment By: Collin Winter (collinwinter)
Date: 2006-03-03 07:49

Message:
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I forgot to mention: the patch also includes updates to
things like Lib/test/test_dis.py and Lib/opcode.py to make
them work with the updated LIST_APPEND opcode and code
generation.

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You can respond by visiting: 
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