Created on 2010-01-12 12:22 by sdefresne, last changed 2012-09-06 20:42 by haypo.
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| File name | Uploaded | Description | Edit | |
| compile.diff | sdefresne, 2010-01-12 12:23 | Patch | ||
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| msg97631 - (view) | Author: Sylvain Defresne (sdefresne) | Date: 2010-01-12 12:22 | |
Python compiler detect some constant expression used in if / while statement and evaluate them at compilation. However, it does not perform some simple optimisation (evaluating not unary expression or checking if and or or expression are constant because of the first expression).
The attached patch allow Python to detect some more constant expression, and to optimise test like the following:
if __debug__ and x:
pass
if not __debug__:
pass
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| msg97632 - (view) | Author: Sylvain Defresne (sdefresne) | Date: 2010-01-12 12:23 | |
Correct version of the patch. |
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| msg169939 - (view) | Author: STINNER Victor (haypo) *  |
Date: 2012-09-06 20:42 | |
I'm working on a different approach: an AST optimizer. It is already able to replace "if __debug__ and x: ...." with "if x: ..." ("pythonenv" option must be enabled).
https://bitbucket.org/haypo/astoptimizer/
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| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2012-09-06 20:42:43 | haypo | set | nosy:
+ haypo messages: + msg169939 |
| 2010-03-17 17:28:42 | pitrou | set | nosy:
+ rhettinger |
| 2010-01-12 12:45:16 | pitrou | set | priority: normal stage: patch review |
| 2010-01-12 12:23:03 | sdefresne | set | files:
+ compile.diff messages: + msg97632 |
| 2010-01-12 12:22:28 | sdefresne | set | files: - compile.diff |
| 2010-01-12 12:22:02 | sdefresne | create | |