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1. Commits on Oct 1, 2026

   • gh-142349: Simplify lazy import resolution (#158282)

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   • gh-157468: Validate correct builtins used under JIT (GH-157766)

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     johng

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   • gh-155823: Fix stale stack on _SEND_VIRTUAL_TIER_TWO exhausted exit (GH-155844)

     aisk

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2. Commits on Sep 30, 2026

   • gh-157833: Fix specialized C calls with additional method flags (GH-157834)

     overcat

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     069c74aView commit details

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   • gh-158380: Fix the stack operand used by JIT dict access guards (GH-158381)

     cocolato

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3. Commits on Sep 22, 2026

   • gh-157526: Call `__instancecheck__` and `__subclasscheck__` without creating a bound method (#157670)

     kumaraditya303

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4. Commits on Aug 13, 2026

   • gh-155486: Allow non-compact integers in `TO_BOOL_INT` (GH-155531)

     marinelay

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   • gh-154701: prevent executor self-links in JIT cold exits (GH-155323)

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     cocolato

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     blurb-it[bot]

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5. Commits on Jul 6, 2026

   • gh-150490: Raise PyType_Modified for insertion into split dictionary (take 2) (#152914)

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     DinoV

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   • gh-145855: Remove the DELETE_ATTR bytecode (GH-146216)

     aisk

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6. Commits on Jul 3, 2026

   • gh-152066: Merge `_GUARD_DORV_VALUES_INST_ATTR_FROM_DICT` into `_CHECK_MANAGED_OBJECT_HAS_VALUES` (GH-152231)

     Aniketsy

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7. Commits on Jul 1, 2026

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

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     markshannon

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8. Commits on Jun 30, 2026

   • gh-145857: Replace `DELETE_GLOBAL` with `PUSH_NULL; STORE_GLOBAL` (GH-146314)

     brijkapadia

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   • gh-145854: Replace `DELETE_NAME` with `PUSH_NULL; STORE_NAME` (GH-146006)

     brijkapadia

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   • gh-152192: Fix JUMP_BACKWARD passing a truncated oparg to the jit tracer (GH-152382)

     deadlovelll

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9. Commits on Jun 26, 2026

   • gh-152238: Revert gh-150490 and gh-152200. (gh-152232)

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     nascheme

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10. Commits on Jun 18, 2026

    • GH-150516: Reduce the work done to spill and reload the stack around calls (GH-151587)

      markshannon

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      ad1513aView commit details

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11. Commits on Jun 17, 2026

    • gh-151436: Fix missing `tstate->last_profiled_frame` updates (#151437)

      maurycy

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      a8d74c0View commit details

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12. Commits on Jun 15, 2026

    • gh-151223: fix tsan data races in load global specializations (#151393)

      kumaraditya303

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      e9d5280View commit details

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13. Commits on Jun 11, 2026

    • gh-150490: Raise PyType_Modified for insertion into split dictionary (#150489)

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      DinoV

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14. Commits on May 28, 2026

    • gh-148871: make `LOAD_COMMON_CONSTANT` use immortal stackref borrows (GH-149625)

      NekoAsakura

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      39bd44fView commit details

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15. Commits on May 23, 2026

    • gh-145192: improve performance of `PySequence_GetSlice` (#145193)

      eendebakpt

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16. Commits on May 12, 2026

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

      sergey-miryanov

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      1a79fd0View commit details

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17. 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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18. Commits on May 4, 2026

    • gh-143732: add specialization for `FOR_ITER` (GH-148745)

      NekoAsakura

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

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      vstinner

      and

      markshannon

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

      kumaraditya303

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19. Commits on May 3, 2026

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

      sobolevn

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20. Commits on May 2, 2026

    • gh-148380: remove all uses of `_PyType_LookupByVersion` in `optimizer_bytecodes.c` (GH-148394)

      NekoAsakura

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21. Commits on May 1, 2026

    • gh-149204: add `_RROT_3` uop to reduce stack moves (GH-149205)

      NekoAsakura

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22. Commits on Apr 28, 2026

    • gh-148211: decompose `_SHUFFLE_3_LOAD_CONST_INLINE_BORROW` in JIT (GH-148816)

      NekoAsakura

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23. 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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24. Commits on Apr 16, 2026

    • 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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