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GeezerVison is showing github.com — gh-143421: Allocate all JIT state in one go by Fidget-Spinner · Pull Request #143626 · python/cpython

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@Fidget-Spinner

@Fidget-Spinner Fidget-Spinner commented Jan 9, 2026 •
edited by bedevere-app Bot
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  • Issue: JIT optimizer cleanups #143421

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@Fidget-Spinner
Allocate all JIT state in one go
57f2e02
@Fidget-Spinner
Fidget-Spinner requested review from ZeroIntensity, ericsnowcurrently, markshannon and tomasr8 as code owners January 9, 2026 17:38
@bedevere-app bedevere-app Bot added the awaiting core review label Jan 9, 2026
@Fidget-Spinner Fidget-Spinner changed the title Allocate all JIT state in one go gh-143421: Allocate all JIT state in one go Jan 9, 2026
@bedevere-app bedevere-app Bot mentioned this pull request Jan 9, 2026
JIT optimizer cleanups #143421
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@Fidget-Spinner Fidget-Spinner added the skip news label Jan 9, 2026
markshannon
markshannon approved these changes Jan 9, 2026
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Looks good.
One optional suggestion (which can be done in a future change)

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Comment thread Python/pystate.c Resolved

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@bedevere-app bedevere-app Bot added awaiting merge and removed awaiting core review labels Jan 9, 2026
@Fidget-Spinner
Add _PyJit_TracerFree
f6e1aec
@Fidget-Spinner
Fidget-Spinner merged commit e0fb278 into python:main Jan 9, 2026
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@bedevere-app bedevere-app Bot removed the awaiting merge label Jan 9, 2026
@Fidget-Spinner
Fidget-Spinner deleted the lazy_allocate_as_one branch January 9, 2026 19:00
@bedevere-bot

bedevere-bot commented Jan 9, 2026

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⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot ARM64 macOS 3.x (tier-2) has failed when building commit e0fb278.

What do you need to do:

  1. Don't panic.
  2. Check the buildbot page in the devguide if you don't know what the buildbots are or how they work.
  3. Go to the page of the buildbot that failed (https://buildbot.python.org/#/builders/725/builds/12506) and take a look at the build logs.
  4. Check if the failure is related to this commit (e0fb278) or if it is a false positive.
  5. If the failure is related to this commit, please, reflect that on the issue and make a new Pull Request with a fix.

You can take a look at the buildbot page here:

https://buildbot.python.org/#/builders/725/builds/12506

Failed tests:

  • test_urllib2net

Summary of the results of the build (if available):

==

Click to see traceback logs 
remote: Enumerating objects: 27, done.        
remote: Counting objects:   3% (1/27)        
remote: Counting objects:   7% (2/27)        
remote: Counting objects:  11% (3/27)        
remote: Counting objects:  14% (4/27)        
remote: Counting objects:  18% (5/27)        
remote: Counting objects:  22% (6/27)        
remote: Counting objects:  25% (7/27)        
remote: Counting objects:  29% (8/27)        
remote: Counting objects:  33% (9/27)        
remote: Counting objects:  37% (10/27)        
remote: Counting objects:  40% (11/27)        
remote: Counting objects:  44% (12/27)        
remote: Counting objects:  48% (13/27)        
remote: Counting objects:  51% (14/27)        
remote: Counting objects:  55% (15/27)        
remote: Counting objects:  59% (16/27)        
remote: Counting objects:  62% (17/27)        
remote: Counting objects:  66% (18/27)        
remote: Counting objects:  70% (19/27)        
remote: Counting objects:  74% (20/27)        
remote: Counting objects:  77% (21/27)        
remote: Counting objects:  81% (22/27)        
remote: Counting objects:  85% (23/27)        
remote: Counting objects:  88% (24/27)        
remote: Counting objects:  92% (25/27)        
remote: Counting objects:  96% (26/27)        
remote: Counting objects: 100% (27/27)        
remote: Counting objects: 100% (27/27), done.        
remote: Compressing objects:  14% (1/7)        
remote: Compressing objects:  28% (2/7)        
remote: Compressing objects:  42% (3/7)        
remote: Compressing objects:  57% (4/7)        
remote: Compressing objects:  71% (5/7)        
remote: Compressing objects:  85% (6/7)        
remote: Compressing objects: 100% (7/7)        
remote: Compressing objects: 100% (7/7), done.        
remote: Total 14 (delta 13), reused 7 (delta 7), pack-reused 0 (from 0)        
From https://github.com/python/cpython
 * branch                    main       -> FETCH_HEAD
Note: switching to 'e0fb278064932a0a9faf5d06850a0d211c57dfc9'.

You are in 'detached HEAD' state. You can look around, make experimental
changes and commit them, and you can discard any commits you make in this
state without impacting any branches by switching back to a branch.

If you want to create a new branch to retain commits you create, you may
do so (now or later) by using -c with the switch command. Example:

  git switch -c <new-branch-name>

Or undo this operation with:

  git switch -

Turn off this advice by setting config variable advice.detachedHead to false

HEAD is now at e0fb2780649 gh-143421: Allocate all JIT state in one go (GH-143626)
Switched to and reset branch 'main'

make: *** [buildbottest] Error 2
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@Fidget-Spinner

Fidget-Spinner commented Jan 9, 2026

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Unrelated flaky test.
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reidenong pushed a commit to reidenong/cpython that referenced this pull request Jan 12, 2026
@Fidget-Spinner @reidenong
pythongh-143421: Allocate all JIT state in one go (pythonGH-143626)
d0fb0b4
thunder-coding pushed a commit to thunder-coding/cpython that referenced this pull request Feb 15, 2026
@Fidget-Spinner @thunder-coding
pythongh-143421: Allocate all JIT state in one go (pythonGH-143626)
f5742c8
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Reviewers

@markshannon markshannon markshannon approved these changes
@ericsnowcurrently ericsnowcurrently Awaiting requested review from ericsnowcurrently ericsnowcurrently is a code owner
@ZeroIntensity ZeroIntensity Awaiting requested review from ZeroIntensity ZeroIntensity is a code owner
@tomasr8 tomasr8 Awaiting requested review from tomasr8 tomasr8 is a code owner

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@Fidget-Spinner @bedevere-bot @markshannon
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
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