[issue7682] Optimisation of if with constant expression

2019-08-31 Thread Serhiy Storchaka 


Serhiy Storchaka  added the comment:

This was optimized in 3.7. See issue27169 and issue30501.

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nosy: +serhiy.storchaka
resolution:  -> out of date
stage: patch review -> resolved
status: open -> closed

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[issue7682] Optimisation of if with constant expression

2012-09-06 Thread STINNER Victor 

STINNER Victor added the comment:

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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nosy: +haypo

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[issue7682] Optimisation of if with constant expression

2010-03-17 Thread Antoine Pitrou 

Changes by Antoine Pitrou pit...@free.fr:


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nosy: +rhettinger

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[issue7682] Optimisation of if with constant expression

2010-01-12 Thread Sylvain Defresne 

New submission from Sylvain Defresne sdefre...@gmail.com:

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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components: Interpreter Core
files: compile.diff
keywords: patch
messages: 97631
nosy: sdefresne
severity: normal
status: open
title: Optimisation of if with constant expression
type: performance
versions: Python 3.2
Added file: http://bugs.python.org/file15836/compile.diff

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[issue7682] Optimisation of if with constant expression

2010-01-12 Thread Sylvain Defresne 

Changes by Sylvain Defresne sdefre...@gmail.com:


Removed file: http://bugs.python.org/file15836/compile.diff

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[issue7682] Optimisation of if with constant expression

2010-01-12 Thread Sylvain Defresne 

Sylvain Defresne sdefre...@gmail.com added the comment:

Correct version of the patch.

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Added file: http://bugs.python.org/file15837/compile.diff

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[issue7682] Optimisation of if with constant expression

2010-01-12 Thread Antoine Pitrou 

Changes by Antoine Pitrou pit...@free.fr:


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priority:  - normal
stage:  - patch review

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