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GH-133231: Add JIT utilities in sys._jit #133233

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Merged
merged 17 commits into from
May 5, 2025
Merged

GH-133231: Add JIT utilities in sys._jit #133233

merged 17 commits into from
May 5, 2025

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brandtbucher
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@brandtbucher brandtbucher commented May 1, 2025 •
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@brandtbucher brandtbucher added type-feature A feature request or enhancement interpreter-core (Objects, Python, Grammar, and Parser dirs) topic-JIT labels May 1, 2025
@brandtbucher brandtbucher self-assigned this May 1, 2025
@bedevere-app bedevere-app bot mentioned this pull request May 1, 2025
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AA-Turner
AA-Turner reviewed May 1, 2025
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quick doc-only review:

Doc/library/sys.rst Outdated Show resolved Hide resolved
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Doc/using/cmdline.rst
Comment on lines +1284 to +1290
.. envvar:: PYTHON_JIT

On builds where experimental just-in-time compilation is available, this
variable can force the JIT to be disabled (``0``) or enabled (``1``) at
interpreter startup.

.. versionadded:: 3.13
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We should backport this, should it be split out into a different PR for ease?

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We can just backport it separately, since I need the ref for this PR's changes.

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Is it worth using miss-islington for the backport here?

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I'll just do it manually in a bit.

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I just realized that my approach for sys._jit.is_active() will need reworking, since the tail-calling interpreter doesn't have entry_frame handy.

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Okay, reworked to support tail-calling.

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@markshannon, let me know what you think. The bots won't let us merge features without approving review, but I'd like to get something like this in before the freeze.

markshannon
markshannon reviewed May 5, 2025
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Looks good.
One small suggestion

Lib/test/test_sys.py Outdated Show resolved Hide resolved
@brandtbucher brandtbucher merged commit b1aa515 into python:main May 5, 2025
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@AA-Turner AA-Turner AA-Turner left review comments

@markshannon markshannon markshannon approved these changes

@ericsnowcurrently ericsnowcurrently Awaiting requested review from ericsnowcurrently ericsnowcurrently is a code owner

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