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1. Commits on Dec 19, 2025

   • gh-134584: JIT: Borrow references for immortal promoted globals (GH-142921)

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     Fidget-Spinner

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   • gh-142961: Fix constant folding len(tuple) in JIT (GH-142963)

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2. Commits on Dec 18, 2025

   • GH-134584: Remove redundant refcount for `BINARY_OP_SUBSCR_STR_INT` (#142844)

     savannahostrowski

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   • gh-134584: Eliminate redundant refcounting from _BINARY_OP_SUBSCR_LIST_INT (GH-142926)

     cocolato

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   • gh-134584: Remove redundant refcount from _BINARY_OP_ADD_UNICODE (gh-142825)

     corona10

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3. Commits on Dec 16, 2025

   • gh-134584: Eliminate redundant refcounting from `_STORE_ATTR_WITH_HINT` (GH-142767)

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     Zheaoli

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   • gh-134584: Eliminate redundant refcounting from `_LOAD_ATTR_INSTANCE_VALUE` (GH-142769)

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     Zheaoli

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4. Commits on Dec 15, 2025

   • GH-134584: Remove redundant refcount from `_STORE_ATTR_SLOT` (#142729)

     savannahostrowski

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   • gh-134584: JIT: Eliminate redundant refcount ops for X_INT (GH-142765)

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   • gh-134584: Eliminate redundant refcounting from `_STORE_ATTR_INSTANCE_VALUE` (GH-142759)

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     Zheaoli

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   • gh-134584: Remove custom float decref ops (GH-142576)

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   • gh-134584: Eliminate redundant refcounting from _STORE_SUBSCR_DICT (GH-142712)

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     corona10

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     Fidget-Spinner

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   • gh-134584: Eliminate redundant refcounting from _CALL_LIST_APPEND (GH-142711)

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     Zheaoli

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     Fidget-Spinner

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5. Commits on Dec 14, 2025

   • gh-134584: Eliminate redundant refcounting from _STORE_SUBSCR_LIST_INT (gh-142703)

     corona10

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   • gh-134584: Eliminate redundant refcounting from `_CALL_STR_1` (GH-136070)

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     Zheaoli

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6. Commits on Dec 13, 2025

   • gh-134584: Cleanups for GH-135860 (GH-142604)

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7. Commits on Dec 12, 2025

   • gh-134584: Revert partially GH-135860 (GH-142620)

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8. Commits on Dec 11, 2025

   • gh-134584: Eliminate redundant refcounting from ``_CALL_LEN`` (gh-136104)

     corona10

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   • gh-134584: Eliminate redundant refcounting from `_CALL_TUPLE_1` (GH-135860)

     noamcohen97

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   • GH-135379: Top of stack caching for the JIT. (GH-135465)

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     markshannon

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9. Commits on Dec 8, 2025

   • gh-142276: Watch attribute loads when promoting JIT constants (GH-142303)

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10. Commits on Nov 13, 2025

    • gh-139109: A new tracing JIT compiler frontend for CPython (GH-140310)

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11. Commits on Sep 18, 2025

    • GH-138378: Move globals-to-consts pass into main optimizer pass (GH-138379)

      markshannon

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12. Commits on Sep 15, 2025

    • GH-132732: Use pure op machinery to optimize various instructions with `_POP_TOP` and `_POP_TWO` (#137577)

      savannahostrowski

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13. Commits on Sep 3, 2025

    • gh-138431: JIT Optimizer --- Fix round-tripping references for str and tuple (GH-138458)

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      markshannon

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    • gh-137136: Suppress build warnings when build on Windows with --experimental-jit-interpreter (GH-137137)

      aisk

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14. Commits on Jul 26, 2025

    • GH-132732: Use pure op machinery to optimize `COMPARE_OP_INT/FLOAT/STR` (#137062)

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      savannahostrowski

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      Fidget-Spinner

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15. Commits on Jul 1, 2025

    • gh-136125: Use `_PyObject_GetMethodStackRef` for `LOAD_ATTR` (GH-136127)

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16. Commits on Jun 27, 2025

    • gh-132732: Automatically constant evaluate pure operations (GH-132733)

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      tomasr8

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17. Commits on Jun 23, 2025

    • gh-131798: Optimize `_UNARY_NEGATIVE` (GH-135223)

      noamcohen97

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    • gh-134584: Specialize POP_TOP by reference and type in JIT (GH-135761)

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18. Commits on Jun 20, 2025

    • gh-131798: JIT: Optimize _CALL_LEN when the length is known (#135260)

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      tomasr8

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

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      devdanzin

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19. Commits on Jun 19, 2025

    • GH-135379: Specialize int operations for compact ints only (GH-135668)

      markshannon

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20. Commits on Jun 17, 2025

    • gh-134584: Decref elimination for float ops in the JIT (GH-134588)

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      Fidget-Spinner

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