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1. Commits on Aug 20, 2026

   • [JSC] Use StringSwitch with resolved rope strings in FTL

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2. Commits on Jul 20, 2026

   • [JSC] Make AsyncFromSyncIterator handled in async_iterator_open / async_iterator_next

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3. Commits on Jun 17, 2026

   • [CMake] Expand prefix headers (re-land 315349@main)

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     geoffreygaren

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   • Unreviewed, reverting 315349@main (dafcff7846db)

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     JonWBedard

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   • [CMake] Expand prefix headers

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     geoffreygaren

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4. Commits on May 31, 2026

   • [JSC] Array rematerialization should preserve double Array holes when having a bad time

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     sosukesuzuki

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5. Commits on May 30, 2026

   • [JSC] Array rematerialization should know how to have a bad time

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     syg

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     JonWBedard

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6. Commits on May 18, 2026

   • [JSC] Shrink sizeof(JSGenerator)

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7. Commits on May 14, 2026

   • [JSC] Do not allocate promise reaction when it is initial `then` calls and one handler attachment

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8. Commits on May 11, 2026

   • [JSC] Fix hole-handling when rematerializing sunk int32 arrays

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9. Commits on Apr 24, 2026

   • [JSC] Use runtime indexing type for write barrier in operationPopulateObjectInOSR

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     hyjorc1

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   • [JSC] Fix hole-handling when rematerializing sunk double arrays

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     syg

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10. Commits on Apr 20, 2026

    • Further reduce use of jsCast<>()

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11. Commits on Apr 19, 2026

    • Drop jsDynamicCast<>() in favor of dynamicDowncast<>()

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      cdumez

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12. Commits on Apr 16, 2026

    • [JSC] Remove JSInternalPromise

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13. Commits on Mar 17, 2026

    • [JSC] Crash when PhantomNewArrayWithButterfly handles exception

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14. Commits on Feb 9, 2026

    • [JSC] Handle `String#@@iterator` as `NewInternalFieldObject` in DFG/FTL

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      sosukesuzuki

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15. Commits on Feb 3, 2026

    • [JSC] Unify NewGenerator and NewAsyncGenerator into NewInternalFieldObject

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      sosukesuzuki

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16. Commits on Dec 6, 2025

    • [JSC] Move Promise.all implementation to C++

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17. Commits on Oct 12, 2025

    • [JSC] Add JSPromiseAllGlobalContext

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18. Commits on Oct 10, 2025

    • [JSC] Make JSPromiseReaction Cell

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19. Commits on Sep 29, 2025

    • operationMaterializeObjectInOSR needs to initialize Butterflies it creates.

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      kmiller68

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    • [JSC] Introduce JSPromiseReaction object

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20. Commits on Sep 24, 2025

    • [JSC] FTL materialization is missing several internal object types

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21. Commits on Sep 18, 2025

    • Array allocation sinking should split allocations into two, an Array allocation and a Butterfly allocation

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22. Commits on Sep 10, 2025

    • Unreviewed, reverting 299806@main.

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      webkit-commit-queue

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    • Array allocation sinking should split allocations into two, an Array allocation and a Butterfly allocation

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      kmiller68

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23. Commits on Aug 20, 2025

    • Rename JSImmutableButterfly to JSCellButterfly as its no longer always immutable

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      kmiller68

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24. Commits on May 3, 2025

    • Start adopting C++20's [[likely]] / [[unlikely]] in JSC

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      cdumez

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25. Commits on Apr 23, 2025

    • [JSC] WasmBBQJIT should clear high bits when returning Int32

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26. Commits on Mar 17, 2025

    • [JSC] Add NewRegExpUntyped DFG node

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27. Commits on Feb 20, 2025

    • [JSC] Enable Allocation Sinking for NewArrayWithConstantSize

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      hyjorc1

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28. Commits on Nov 19, 2024

    • Replace WTF::bitwise_cast with std::bit_cast

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      cdumez

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29. Commits on Oct 30, 2024

    • Added skip markers for JavaScriptCore and WebCore files that do not conform to -Wunsafe-buffer-usage

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30. Commits on Oct 3, 2024

    • [JSC] Complete the implementation of Iterator helpers proposal

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      Alexey Shvayka

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