[issue37794] Replace /Ox with /O2

[Steve Dower]

Steve Dower  added the comment:

Distutils is now deprecated (see PEP 632) and all tagged issues are being 
closed. From now until removal, only release blocking issues will be considered 
for distutils.

If this issue does not relate to distutils, please remove the component and 
reopen it. If you believe it still requires a fix, most likely the issue should 
be re-reported at https://github.com/pypa/setuptools

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resolution:  -> out of date
stage: patch review -> resolved
status: open -> closed

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[issue37794] Replace /Ox with /O2

[Steve Dower]

Steve Dower  added the comment:

Given the potential compatibility impact (small chance of third-party 
extensions relying on function aliasing), I'd like to see an update to 
Docs/whatsnew/3.9.rst as well.

Also the suggested change to the NEWS entry is good. I don't think this one 
should pass completely silently.

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nosy: +steve.dower
versions: +Python 3.9

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[issue37794] Replace /Ox with /O2

[Nikita Kniazev]

Change by Nikita Kniazev :


--
keywords: +patch
pull_requests: +14910
stage:  -> patch review
pull_request: https://github.com/python/cpython/pull/15179

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[issue37794] Replace /Ox with /O2

[Nikita Kniazev]

New submission from Nikita Kniazev :

The /O2 is a superset of /Ox with additional /GF and /Gy switches
which enables strings and functions deduplication and almost always
are favorable optimizations without downsides.

https://docs.microsoft.com/en-us/cpp/build/reference/ox-full-optimization

--
components: Distutils
messages: 349243
nosy: Kojoley, dstufft, eric.araujo
priority: normal
severity: normal
status: open
title: Replace /Ox with /O2
type: enhancement

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