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1. Commits on May 11, 2026

   • [3.15] gh-145235: Make dict watcher API thread-safe for free-threaded builds (gh-145233) (#149690)

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     colesbury

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     yoney

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     8297d50View commit details

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2. Commits on May 3, 2026

   • gh-149217: Avoid adding dependencies on immutable, immortal classes in the JIT (GH149256)

     Wulian233

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     8a7eddaView commit details

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3. Commits on Apr 27, 2026

   • GH-146073: Add fitness to executor dumps. (GH-148959)

     markshannon

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     276f474View commit details

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4. Commits on Apr 14, 2026

   • gh-148510: restore `func_version` check in `_LOAD_ATTR_PROPERTY_FRAME` (GH-148528)

     NekoAsakura

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     52a7f1bView commit details

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5. Commits on Apr 12, 2026

   • gh-146261: JIT: protect against function version changes (#146300)

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     Fidget-Spinner

     and

     kumaraditya303

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     6f7bb29View commit details

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   • gh-148393: Use atomic ops on _ma_watcher_tag in free threading build (gh-148397)

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     colesbury

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     3ab94d6View commit details

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6. Commits on Apr 11, 2026

   • gh-131798: do not watch immutable types in JIT (#148383)

     kumaraditya303

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     ba1e1c1View commit details

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   • gh-148211: decompose `_POP_TWO/_POP_CALL(_ONE/_TWO)` in JIT (GH-148377)

     NekoAsakura

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     9831deaView commit details

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   • gh-148211: decompose `[_POP_TWO/_INSERT_2]_LOAD_CONST_INLINE_BORROW` in JIT (GH-148357)

     NekoAsakura

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     72006a7View commit details

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7. Commits on Apr 10, 2026

   • gh-148171: Convert CALL_BUILTIN_FAST to leave inputs on the stack for refcount elimination in JIT (GH-148172)

     Fidget-Spinner

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     266247cView commit details

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   • gh-148211: decompose `[_POP_CALL_X/_SHUFFLE_2]_LOAD_CONST_INLINE_BORROW` in JIT (GH-148313)

     NekoAsakura

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     aea0b91View commit details

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8. Commits on Apr 9, 2026

   • gh-148211: decompose `_INSERT_1_LOAD_CONST_INLINE(_BORROW)` in JIT (GH-148283)

     NekoAsakura

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     0f49232View commit details

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   • gh-131798: fold super method lookups in JIT (#148231)

     kumaraditya303

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     458aca9View commit details

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   • gh-148211: refactor bool to explicit uops in JIT (GH-148258)

     NekoAsakura

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     b5ccf00View commit details

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9. Commits on Apr 8, 2026

   • gh-148211: decompose `_POP_TOP_LOAD_CONST_INLINE(_BORROW)` in JIT (GH-148230)

     NekoAsakura

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   • gh-148235: remove duplicate uops `_LOAD_CONST_UNDER_INLINE(_BORROW)` in JIT (GH-148236)

     NekoAsakura

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     7563585View commit details

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10. Commits on Apr 4, 2026

    • gh-148083: Prevent constant folding when lhs is container types (gh-148090)

      corona10

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      853dafeView commit details

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    • gh-148083: Constant-fold _CONTAINS_OP_SET for frozenset (gh-148084)

      corona10

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      289f19aView commit details

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11. Commits on Mar 30, 2026

    • gh-146558: JIT optimize dict access for objects with known hash (#146559)

      kumaraditya303

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      8e9d21cView commit details

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12. Commits on Mar 26, 2026

    • gh-GH-131798: optimize jit attribute loads on immutable types (#146449)

      kumaraditya303

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      fc1f6b1View commit details

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13. Commits on Mar 20, 2026

    • gh-146099: Optimize _GUARD_CODE_VERSION+IP via function version symbols (GH-146101)

      Fidget-Spinner

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14. Commits on Mar 3, 2026

    • gh-145214: Narrow _GUARD_TOS_ANY_{SET,DICT} by using probable type (gh-145215)

      corona10

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      6908372View commit details

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15. Commits on Feb 19, 2026

    • GH-144651: Optimize the new uops added when recording values during tracing. (GH-144948)

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      markshannon

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      3f37b94View commit details

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16. Commits on Feb 14, 2026

    • fix warnings in jit builds (GH-144817)

      chris-eibl

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      caac966View commit details

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17. Commits on Feb 9, 2026

    • gh-144623: Fix missing output uops in optimizer debug output (GH-144617)

      cocolato

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      988286eView commit details

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18. Commits on Feb 5, 2026

    • GH-144179: Use recorded values to make optimizer more robust (GH-144437)

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      markshannon

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      b53fc7cView commit details

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19. Commits on Feb 2, 2026

    • gh-144145: Revert PR#144122 for performance and potential bugs. (GH-144391)

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      cocolato

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      ebbb2caView commit details

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20. Commits on Jan 30, 2026

    • gh-144145: Track nullness of properties in the Tier 2 JIT optimizer (GH-144122)

      cocolato

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      1dc12b2View commit details

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21. Commits on Jan 29, 2026

    • gh-143946: Add more debug info in `optimize_uops` (GH-144262)

      cocolato

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      26996b5View commit details

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22. Commits on Jan 25, 2026

    • gh-143995: Eliminate redundant refcounting in the JIT from LOAD_ATTR_MODULE (GH-143996)

      aisk

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      6e55337View commit details

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23. Commits on Jan 24, 2026

    • gh-130415: Narrow types to constants in branches involving specialized comparisons with a constant (GH-144150)

      reidenong

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      6d972e0View commit details

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    • gh-144016: Fix bad stack assert in the JIT optimizer (GH-144019)

      Fidget-Spinner

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      ca99bfdView commit details

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24. Commits on Jan 22, 2026

    • GH-139109: Partial reworking of JIT data structures (GH-144105)

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      markshannon

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      d77aaa7View commit details

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    • gh-130415: Narrowing to constants in branches involving `is` comparisons with a constant (GH-143895)

      reidenong

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      0b08438View commit details

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25. Commits on Jan 21, 2026

    • GH-138245: Perform boolean guards by testing a single bit, rather than a full pointer comparison. (GH-143810)

      markshannon

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      9eab67dView commit details

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