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1. Commits on Oct 15, 2026

   • [JSC] LLInt should not poll the JIT worklist on every execution while a baseline compile is in flight

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     Constellation

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   • [JSC] B3 foldPathConstants should treat a boolean branch condition as 1 on the taken edge

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     Constellation

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

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     sosukesuzuki

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   • [JSC] BlockDirectory's bits should be guarded by a mutate-grow lock

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     kmiller68

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   • [JSC] DFG iterator open fast paths should pass `JSTypeRange` to `IsCellWithType`

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     sosukesuzuki

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   • [JSC] Load each private name once in straight-line bytecode

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     sosukesuzuki

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   • [JSC] Improve B3 FixSSA by tracking reachable defs

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     Constellation

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   • [JSC] `Number#toLocaleString` and `BigInt#toLocaleString` should reuse `IntlNumberFormat` when only a locale string is given

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     sosukesuzuki

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   • [JSC] Clarify what MarkedBlock's versioned mark and newly-allocated bits record

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     dhecht

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2. Commits on Oct 14, 2026

   • [CMake] Bake DYLD_FRAMEWORK_PATH into Cocoa executables in dev presets

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     kmiller68

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   • Remove use of JSGlobalObjectAdditions.h

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     achristensen07

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

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   • [JSC] Remove optimizeParallelSlotVisitorsForStoppedMutator and its protocol

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     dhecht

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   • [JSC] Install approximate FTL bytecode cost sooner

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     Constellation

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   • [JSC] TypedArray / ArrayBuffer constructions throw range error for negative length

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     Constellation

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   • [JSC] Rename the GC's bytes-visited counts to bytes marked and old generation cell bytes

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     dhecht

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   • ScriptModuleLoader should hold its ScriptExecutionContext in a CheckedRef

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     annevk

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   • [JSC] DFG should not turn a call to RegExp into NewRegExpUntyped

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     Constellation

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   • [JSC] Strict mode reserved words should be rejected as parameter and function names by `"use strict"` directive

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     sosukesuzuki

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   • [JSC] Keep SourceCodeCache if it was touched in the last full GC-cycle

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     Constellation

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   • [JSC] Labelled function declarations should be declared in the enclosing scope

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     sosukesuzuki

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3. Commits on Oct 13, 2026

   • Web Inspector: input::placeholder styles not showing up in Styles sidebar

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     dcrousso

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   • Web Inspector: toString is called twice by console log

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     dcrousso

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   • [JSC] DFG should branch on op_instanceof result in each arm when jtrue / jfalse follows

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   • [JSC] `await a ** b` and `await` as an identifier in a module should be SyntaxErrors

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     sosukesuzuki

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   • [Wasm] BBQ should flush only the block's results at the end of a block

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     sosukesuzuki

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   • [JSC] Tighten FTL arith and comparison ops

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     Constellation

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   • [JSC] DFG backwards propagation should not pass LogicalNot's use flags to its operand

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     Constellation

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   • [JSC] Fold Phis during the B3 ReduceStrength walk and drop the second value walk

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     Constellation

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   • [JSC] Fix FTL ToIntegerOrInfinity

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     Constellation

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   • [JSC] Make the GC's memory accounting work for collections of several heaps

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     dhecht

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   • [JSC] DFG backwards propagation should bound right shifts by their masked shift count

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     Constellation

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   • [WPE][GTK] Add ENABLE_FUTURE_API_VERSION and use it to clean up WebKitWebFormManager and WebKitWebExtension

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     mcatanzaro

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   • [Site Isolation] Web Inspector: Inspector Bootstrap Script does not run in cross-origin iframes

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     basuke

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   • Remove ShadowRealm

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     annevk

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