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1. 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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2. Commits on Feb 4, 2026

   • gh-140824: Fix _Py_DumpExtensionModules() to ignore sub-modules (#144339)

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     vstinner

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3. Commits on Feb 3, 2026

   • gh-139103: Use borrowed references for positional args in _PyStack_UnpackDict (gh-144407)

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     colesbury

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4. Commits on Feb 2, 2026

   • gh-139109: Replace `_CHECK_STACK_SPACE` with `_CHECK_STACK_SPACE_OPERAND` in JIT optiimizer (GH-144394)

     cocolato

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   • GH-144179: Add value recording to JIT tracing front-end (GH-144303)

     markshannon

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

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     cocolato

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5. Commits on Feb 1, 2026

   • Fix unused variable 'COLORS' warning in optimizer.c (#144373)

     aisk

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     db61f62View commit details

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6. Commits on Jan 31, 2026

   • gh-143055: Implementation of PEP 798 (#143056)

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     adqm

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     JelleZijlstra

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7. Commits on Jan 30, 2026

   • gh-144319: Fix huge page safety in pymalloc arenas (#144331)

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     pablogsal

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   • gh-120321: Make gi_yieldfrom thread-safe in free-threading build (#144292)

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     colesbury

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   • gh-144280: Add missing predicate symbol to case-switch (GH-144298)

     reidenong

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

     cocolato

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8. Commits on Jan 29, 2026

   • gh-144307: Fix a reference leak during module teardown (GH-144308)

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     hyongtao-code

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     blurb-it[bot]

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

     cocolato

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     26996b5View commit details

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9. Commits on Jan 28, 2026

   • gh-144194: Fix mmap failure check in perf_jit_trampoline.c (#143713)

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     stratakis

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10. Commits on Jan 27, 2026

    • gh-144289: Remove ENABLE_SPECIALIZATION_FT (gh-144290)

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      colesbury

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    • gh-120321: Add missing "return false" in gen_try_set_executing (gh-144291)

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      colesbury

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    • GH-126910: add test for manual frame unwinding (#144137)

      diegorusso

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      66055d0View commit details

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11. Commits on Jan 26, 2026

    • gh-144169: Fix three crashes in AST objects with non-str kwargs (#144178)

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      JelleZijlstra

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      vstinner

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      639c1adView commit details

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12. 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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13. Commits on Jan 24, 2026

    • gh-144140: Optimize len for string constants in optimizer (GH-144142)

      y1yang0

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      979d92fView commit details

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

      reidenong

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    • gh-144068: fix JIT tracer memory leak when daemon thread exits (GH-144077)

      cocolato

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      2984024View commit details

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    • Misc: remove duplicate `instr_frame` assignment in `_PyJit_TryInitializeTracing` (GH-144155)

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      hyongtao-code

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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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    • gh-144007: Eliminate redundant refcounting in the JIT for BINARY_OP (GH-144011)

      aisk

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14. Commits on Jan 23, 2026

    • gh-144005: Eliminate redundant refcounting in the JIT for BINARY_OP_EXTEND (#144006)

      aisk

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      2f42f83View commit details

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15. Commits on Jan 22, 2026

    • gh-142779: Initialize reserved field for proper padding (#142780)

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      stratakis

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

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      markshannon

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

      reidenong

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16. 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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17. Commits on Jan 20, 2026

    • gh-141504: Move PYTHON_UOPS_OPTIMIZE to policy object (GH-144082)

      corona10

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    • gh-144054: no deferred refcount for untracked (gh-144081)

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      nascheme

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    • gh-143939: Fix assignment to `_PyThreadStateImpl.generator_return_kind` (gh-143951)

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      colesbury

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    • gh-144054: shutdown fix for deferred ref counting (GH-144055)

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      nascheme

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      795d5c5View commit details

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