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1. Commits on Oct 16, 2026

   • [JSC] FTL direct calls should not link to the arity-checking entrypoint when they pass enough arguments

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   • [JSC] Inline string === "constant"

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   • [JSC] Allocate property storage of arrays without C++ operation call

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2. Commits on Oct 15, 2026

   • [JSC] Add DFG / FTL intrinsic for `%TypedArray%.prototype.set`

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     sosukesuzuki

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3. Commits on Oct 14, 2026

   • [JSC] FTL ArithPow should have a fast path for Math.pow(1, x)

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   • [JSC] Install approximate FTL bytecode cost sooner

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4. Commits on Oct 13, 2026

   • [JSC] Tighten FTL arith and comparison ops

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   • [JSC] Fix FTL ToIntegerOrInfinity

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   • Remove ShadowRealm

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   • Replace NODELETE with LEGACY_NODELETE in JavaScriptCore

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   • [Safer CPP] Address new NODELETE warnings after the safer cpp static analysis upgrade

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     cdumez

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   • [JSC] FTL splat-words use two-store per loop

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5. Commits on Oct 12, 2026

   • [B3][Air] Let prologue generators emit late paths

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   • [JSC] JIT Array butterfly allocation should follow to C++ behavior

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6. Commits on Oct 11, 2026

   • [JSC] Remove redundant work from FTL object and array access lowering

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7. Commits on Oct 10, 2026

   • [JSC] Tighten FTL lowering of Map and Set lookup and iteration

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8. Commits on Oct 9, 2026

   • [JSC] Remove redundant work from FTL string lowering

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   • [JSC] Inline the double case of Number.isNaN, Number.isFinite, and Number.isSafeInteger

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9. Commits on Oct 8, 2026

   • [JSC] Centralize cross-realm check when inlining intrinsics in DFG

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     syg

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   • [JSC] FTL CheckJSCast always OSR exits for classes with a JSType range

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   • [JSC] DFG / FTL `StringIteratorNext` should inline Latin-1 characters in 16-bit strings

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     sosukesuzuki

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10. Commits on Oct 7, 2026

    • [JSC] Read Object.defineProperty descriptor fields after ToPropertyKey

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11. Commits on Oct 5, 2026

    • [JSC] Compare lengths inline before calling `operationCompareStringEq` for ropes

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      sosukesuzuki

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12. Commits on Oct 4, 2026

    • [JSC] Reorder CheckStructure targets

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13. Commits on Oct 1, 2026

    • [JSC] Remove BasicBlock::appendNewControlValue

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      chicoxyzzy

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14. Commits on Sep 30, 2026

    • [JSC] Mark non-escaping lambda parameters as NOESCAPE

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      cdumez

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15. Commits on Sep 29, 2026

    • [JSC] Store the `ValueReps` of FTL OSR exits in the exit stream

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      sosukesuzuki

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    • [JSC] Optimize Int52 more

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16. Commits on Sep 28, 2026

    • [JSC] Optimize BigInt comparison with 0n

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17. Commits on Sep 26, 2026

    • [JSC] Store FTL OSR exits as a byte stream

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      sosukesuzuki

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    • Reduce use of legacyCStringPointer() throughout the codebase

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18. Commits on Sep 24, 2026

    • [JSC] Quick simplification of B3 graph at frontend

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19. Commits on Sep 23, 2026

    • Make CString's literal, buffer and mutable accessors reachable only through CStringWithEncoding

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      cdumez

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20. Commits on Sep 21, 2026

    • [JSC] Fix cross-realm DFG Set spread optimization

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21. Commits on Sep 18, 2026

    • [JSC] `RegExp#test` anchored first-character filter must not skip the `lastIndex` read

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      sosukesuzuki

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