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1. Commits on May 12, 2026

   • [3.14] gh-145235: Make dict watcher API thread-safe for free-threaded builds (gh-145233) (#149691)

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     colesbury

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     yoney

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2. Commits on Apr 12, 2026

   • [3.14] gh-148393: Use atomic ops on _ma_watcher_tag in free threading build (gh-148397) (#148451)

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     miss-islington

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     colesbury

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3. Commits on Aug 21, 2025

   • [3.14] gh-137728 gh-137762: Fix bugs in the JIT with many local variables (GH-137764) (#137999)

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     miss-islington

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     Fidget-Spinner

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4. Commits on Jun 20, 2025

   • [3.14] gh-135608: Add a null check for attribute promotion to fix a JIT crash (GH-135613) (#135739)

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     Fidget-Spinner

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     devdanzin

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5. Commits on May 1, 2025

   • Remove duplicate includes: Python/{bytecodes,ceval,optimizer_analysis}.c (#132622)

     AA-Turner

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6. Commits on Apr 21, 2025

   • GH-130415: Improve the JIT's unneeded uop removal pass (GH-132333)

     brandtbucher

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7. Commits on Apr 1, 2025

   • GH-131726: Split up _CHECK_VALIDITY_AND_SET_IP (GH-131810)

     brandtbucher

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   • gh-130704: Strength reduce `LOAD_FAST{_LOAD_FAST}` (#130708)

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     mpage

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8. Commits on Mar 20, 2025

   • GH-131498: Remove conditional stack effects (GH-131499)

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     markshannon

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9. Commits on Mar 2, 2025

   • GH-130415: Use boolean guards to narrow types to values in the JIT (GH-130659)

     brandtbucher

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10. Commits on Feb 28, 2025

    • GH-130296: Avoid stack transients in four instructions. (GH-130310)

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      markshannon

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11. Commits on Feb 7, 2025

    • GH-129715: Remove _DYNAMIC_EXIT (GH-129716)

      brandtbucher

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12. Commits on Jan 27, 2025

    • GH-128914: Remove all but one conditional stack effects (GH-129226)

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      markshannon

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13. Commits on Jan 23, 2025

    • Revert "GH-128914: Remove conditional stack effects from `bytecodes.c` and the code generators (GH-128918)" (GH-129202)

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      colesbury

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14. Commits on Jan 20, 2025

    • GH-128914: Remove conditional stack effects from `bytecodes.c` and the code generators (GH-128918)

      markshannon

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    • GH-128939: Refactor JIT optimize structs (GH-128940)

      markshannon

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15. Commits on Dec 13, 2024

    • gh-115999: Specialize loading attributes from modules in free-threaded builds (#127711)

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      mpage

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16. Commits on Nov 9, 2024

    • gh-120619: Strength reduce function guards, support 2-operand uop forms (GH-124846)

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      Fidget-Spinner

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      brandtbucher

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17. Commits on Oct 9, 2024

    • gh-115999: Refactor `LOAD_GLOBAL` specializations to avoid reloading {globals, builtins} keys (gh-124953)

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      mpage

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18. Commits on Oct 2, 2024

    • gh-120619: Optimize through `_Py_FRAME_GENERAL` (GH-124518)

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      Fidget-Spinner

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19. Commits on Oct 1, 2024

    • gh-124296: Remove private dictionary version tag (PEP 699) (#124472)

      colesbury

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20. Commits on Sep 24, 2024

    • gh-123923: Defer refcounting for `f_funcobj` in `_PyInterpreterFrame` (#124026)

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      colesbury

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21. Commits on Aug 1, 2024

    • GH-118095: Add tier two support for BINARY_SUBSCR_GETITEM (GH-120793)

      markshannon

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22. Commits on Jun 26, 2024

    • gh-120642: Move private PyCode APIs to the internal C API (#120643)

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      vstinner

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23. Commits on Jun 25, 2024

    • GH-120982: Add stack check assertions to generated interpreter code (GH-120992)

      markshannon

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24. Commits on Jun 17, 2024

    • GH-120619: Clean up `RETURN_VALUE` instruction (GH-120624)

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      markshannon

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25. Commits on Jun 8, 2024

    • gh-119258: Eliminate Type Guards in Tier 2 Optimizer with Watcher (GH-119365)

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26. Commits on May 10, 2024

    • GH-118910: Less boilerplate in the tier 2 optimizer (#118913)

      markshannon

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27. Commits on May 1, 2024

    • gh-118335: Configure Tier 2 interpreter at build time (#118339)

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      gvanrossum

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28. Commits on Apr 25, 2024

    • GH-118095: Handle `RETURN_GENERATOR` in tier 2 (GH-118180)

      markshannon

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29. Commits on Apr 24, 2024

    • GH-115419: Move setting the instruction pointer to error exit stubs (GH-118088)

      markshannon

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30. Commits on Apr 22, 2024

    • GH-115480: Reduce guard strength for binary ops when type of one operand is known already (GH-118050)

      markshannon

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31. Commits on Apr 19, 2024

    • GH-116202: Incorporate invalidation check into _START_EXECUTOR. (GH-118044)

      markshannon

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    • GH-115419: Improve list of escaping functions (GH-118054)

      markshannon

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32. Commits on Apr 18, 2024

    • GH-115419: Tidy up tier 2 optimizer. Merge peephole pass into main pass (GH-117997)

      markshannon

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