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1. Commits on Oct 1, 2026

   • [3.15] gh-142349: Simplify lazy import resolution (GH-158282) (#158569)

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2. Commits on Aug 4, 2026

   • [3.15] gh-154902: Type-check the SET_ADD operand (#155071)

     

     Timofei Ivankov

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3. Commits on Aug 3, 2026

   • [3.15] Backport GH-148874: Make sure that mngr.__exit__() is always called in a with statement (GH-150911) (GH-154830)

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     markshannon

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4. Commits on Jun 19, 2026

   • [3.15] gh-151436: Fix missing `tstate->last_profiled_frame` updates (GH-151437) (#151612)

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     miss-islington

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     maurycy

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5. Commits on Jun 18, 2026

   • [3.15] gh-151229: Finalize JIT tracer in test eval-frame stub (gh-151609) (gh-151648)

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     miss-islington

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     corona10

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6. Commits on Jun 15, 2026

   • [3.15] gh-151223: fix tsan data races in load global specializations (GH-151393) (#151513)

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     miss-islington

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     kumaraditya303

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7. Commits on May 12, 2026

   • [3.15] GH-149501: Fix compilation warning in `_YIELD_VALUE` uop (GH-149502) (#149737)

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     miss-islington

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     sergey-miryanov

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8. Commits on May 5, 2026

   • GH-143732: SEND specialization (GH-148963)

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     markshannon

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   • gh-98894: Restore function entry/exit DTrace probes (#142397)

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     pablogsal

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9. Commits on May 4, 2026

   • gh-137030: Fix YIELD_VALUE bytecode assertion (#149184)

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     vstinner

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     markshannon

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   • gh-143732: allow dict subclasses to be specialized (GH-148128)

     kumaraditya303

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10. Commits on May 3, 2026

    • gh-149243: Check for recursion limits in `CALL_ALLOC_AND_ENTER_INIT` (#149310)

      sobolevn

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11. Commits on Apr 24, 2026

    • gh-146073: Add fitness/exit quality mechanism for JIT trace frontend (GH-148089)

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      cocolato

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12. Commits on Apr 16, 2026

    • gh-146031: Allow keeping specialization enabled when specifying eval frame function (#146032)

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      DinoV

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    • GH-145668: Add FOR_ITER specialization for virtual iterators. Specialize GET_ITER. (GH-147967)

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      markshannon

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    • gh-100239: Specialize more binary operations using BINARY_OP_EXTEND (GH-128956)

      eendebakpt

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13. Commits on Apr 14, 2026

    • gh-146393: Optimize float division operations by mutating uniquely-referenced operands in place (JIT only) (GH-146397)

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      eendebakpt

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      claude

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    • gh-gh-131798: optimize `LOAD_ATTR_GETATTRIBUTE_OVERRIDDEN` in the JIT (#148555)

      kumaraditya303

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

      NekoAsakura

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    • gh-148378: Allow multiple consecutive recording ops per macro op (GH-148496)

      cocolato

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14. Commits on Apr 13, 2026

    • gh-148483: Use Py_GCC_ATTRIBUTE(unused) for stop_tracing label (GH-148481)

      clin1234

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15. Commits on Apr 12, 2026

    • gh-131798: Split `_CHECK_AND_ALLOCATE_OBJECT` into smaller uops (GH-148433)

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16. Commits on Apr 11, 2026

    • gh-148171: Convert `CALL_BUILTIN_CLASS` to leave arguments on the stack (gh-148381)

      corona10

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    • gh-148171: Convert variadic argument opcodes to leave their arguments on the stack (`CALL_BUILTIN_FAST_WITH_KEYWORDS`) (#148366)

      Sacul0457

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    • gh-148171: convert more variadic uops to leave input on stack in JIT (#148361)

      kumaraditya303

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17. Commits on Apr 10, 2026

    • gh-131798: split `_CALL_BUILTIN_CLASS` to smaller uops (#148094)

      kumaraditya303

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    • 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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18. Commits on Apr 9, 2026

    • gh-134584 : Optimize and eliminate redundant ref-counting for `MAKE_FUNCTION` in the JIT (GH-144963)

      Sacul0457

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

      kumaraditya303

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19. Commits on Apr 8, 2026

    • gh-145866: Convert `_CALL_METHOD_DESCRIPTOR_NOARGS` to leave its inputs on the stack to be cleaned up by _POP_TOP (GH-148227)

      Sacul0457

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20. Commits on Apr 4, 2026

    • gh-131798: split recursion check to _CHECK_RECURSION_LIMIT and combine checks (GH-148070)

      kumaraditya303

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    • gh-131798: JIT inline function addresses of builtin methods (#146906)

      kumaraditya303

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21. Commits on Mar 29, 2026

    • gh-145876: Do not mask KeyErrors raised during dictionary unpacking in call (GH-146472)

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      serhiy-storchaka

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22. Commits on Mar 27, 2026

    • gh-145866: Convert `LIST_EXTEND` to leave its inputs on the stack to be cleaned up by `_POP_TOP` be cleaned up by `_POP_TOP` (GH-146383)

      NekoAsakura

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23. Commits on Mar 26, 2026

    • gh-131798: JIT: split call method and call builtin opcodes into smaller uops (#146463)

      kumaraditya303

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