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1. Commits on Jul 22, 2026

   • gh-154014: Initialize cold executor vm_data fields (GH-154142)

     [BHUVANSH855]BHUVANSH855

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2. 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]markshannon

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3. Commits on May 21, 2026

   • gh-149358: Generating JIT recorder transformers and stabilizing family layouts (GH-149359)

     [cocolato]cocolato

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4. Commits on May 5, 2026

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

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     [markshannon]markshannon

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   • GH-126910: Add GNU backtrace support for unwinding JIT frames (#149104)

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     [diegorusso] [pablogsal]

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5. Commits on May 4, 2026

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

     [NekoAsakura]NekoAsakura

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6. Commits on May 2, 2026

   • GH-126910: Add gdb support for unwinding JIT frames (#146071)

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     [diegorusso] [pablogsal]

     diegorusso

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7. Commits on Apr 28, 2026

   • gh-148571: [JIT] Preserve family-head recorder layouts for specialized opcode families (GH-148730)

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     [cocolato]cocolato

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8. Commits on Apr 27, 2026

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

     [markshannon]markshannon

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9. Commits on Apr 24, 2026

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

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     [cocolato]cocolato

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10. Commits on Apr 16, 2026

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

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      [markshannon]markshannon

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11. Commits on Apr 14, 2026

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

      [cocolato]cocolato

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12. Commits on Apr 4, 2026

    • gh-146073: Revert "gh-146073: Add fitness/exit quality mechanism for JIT trace frontend (GH-147966)" (#148082)

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      [Fidget-Spinner]Fidget-Spinner

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13. Commits on Apr 3, 2026

    • gh-146073: Add fitness/exit quality mechanism for JIT trace frontend (GH-147966)

      [cocolato]cocolato

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14. Commits on Mar 18, 2026

    • gh-144888: JIT executor bloom filter wide-type optimization and function Inlining (GH-146114)

      [cocolato]cocolato

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15. Commits on Mar 17, 2026

    • gh-146058: Fix _GUARD_CODE_VERSION_* (GH-146060)

      [Fidget-Spinner]Fidget-Spinner

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16. Commits on Mar 16, 2026

    • gh-127958: Trace from RESUME in the JIT (GH-145905)

      [Fidget-Spinner]Fidget-Spinner

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    • gh-144888: Replace bloom filter linked lists with continuous arrays to optimize executor invalidating performance (GH-145873)

      [cocolato]cocolato

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17. Commits on Mar 10, 2026

    • gh-144681: Fix JIT trace builder assertion failure when conditional branch jump target coincides with fallthrough target (GH-144742)

      [cocolato]cocolato

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18. Commits on Mar 9, 2026

    • GH-144688: Fix refleaks in JIT when optimization fails (GH-145420)

      [markshannon]markshannon

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19. Commits on Feb 22, 2026

    • gh-145064: Fix JIT assertion failure during CALL_ALLOC_AND_ENTER_INIT side exit (GH-145100)

      [cocolato]cocolato

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    • Fix warnings on main (GH-145104)

      [chris-eibl]chris-eibl

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20. Commits on Feb 19, 2026

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

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      [markshannon]markshannon

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21. Commits on Feb 14, 2026

    • fix warnings in jit builds (GH-144817)

      [chris-eibl]chris-eibl

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    • remove unused _PyFunction_LookupByVersion (GH-144814)

      [chris-eibl]chris-eibl

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22. Commits on Feb 5, 2026

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

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      [markshannon]markshannon

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23. Commits on Feb 2, 2026

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

      [markshannon]markshannon

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24. Commits on Feb 1, 2026

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

      [aisk]aisk

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25. Commits on Jan 24, 2026

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

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      [hyongtao-code]hyongtao-code

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26. Commits on Jan 22, 2026

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

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      [markshannon]markshannon

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27. Commits on Jan 20, 2026

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

      [corona10]corona10

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28. Commits on Jan 17, 2026

    • gh-143421: Use new buffer to save optimized uops (GH-143682)

      [cocolato]cocolato

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29. Commits on Jan 15, 2026

    • gh-141504: Refactor policy object into a single opt_config (gh-143644)

      [corona10]corona10

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30. Commits on Jan 14, 2026

    • GH-143842: Make optimizer color table static (GH-143846)

      [mmangkad]mmangkad

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    • gh-143123: Protect against recursive tracer calls/finalization (GH-143126)

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      [Fidget-Spinner]Fidget-Spinner

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