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Commits on Apr 24, 2026

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

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

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Commits on Apr 23, 2026

• [JSC] Optimize returned promise from async function when it does not have await

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Commits on Apr 21, 2026

• Refactor wasm implementation after multimemory support was added

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• [Build Speed] Minimize includes in CodeBlock.h, JSCJSValue.h, JSCJSValueInlines.h, and VM.h

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Commits on Apr 20, 2026

• [JSC] Add per-function dump filtering to greedy register allocator

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• Further reduce use of jsCast<>()

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Commits on Apr 19, 2026

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

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  cdumez

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Commits on Apr 17, 2026

• Optimize isInteger slightly

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Commits on Apr 16, 2026

• [JSC] Remove JSInternalPromise

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Commits on Apr 11, 2026

• Unreviewed, reverting 310871@main.

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Commits on Apr 9, 2026

• Unreviewed, reverting 310817@main (fe410e6e7bcf)

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• [JSC] Add WasmArrayGet / WasmArraySet / WasmArrayNew / WasmArrayLength

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Commits on Apr 8, 2026

• [JSC] Refine clobberize rules for `CheckPrivateBrand` and `SetPrivateBrand`

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• [JSC] Fold string length as much as possible in DFG / FTL

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Commits on Apr 7, 2026

• Use "= default" for constructor in WTF & JavaScriptCore code

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  neeraqa

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  Ahmad Saleem

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• Adopt std::span in more places to avoid temporary Vector constructions

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Commits on Apr 5, 2026

• [WTF] Rename characterAt() / characterStartingAt() to codeUnitAt() / codePointAt()

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Commits on Apr 2, 2026

• Add an instrinsic for toUpperCase

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Commits on Mar 30, 2026

• [JSC] Micro-optimize AssemblyHelpers asm code for ARM64

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• Adopt NODELETE in more places in Source/**

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Commits on Mar 27, 2026

• [JSC] Introduce Realm-less Objects

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Commits on Mar 24, 2026

• Add wasm multimemory support to base instructions

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  asworkjsc

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  kmiller68

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Commits on Mar 17, 2026

• [JSC] Crash when PhantomNewArrayWithButterfly handles exception

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Commits on Mar 15, 2026

• [JSC] FTL `CompareStrictEq(Untyped)` should use DFG's JSValue bit-trick fast path

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Commits on Mar 13, 2026

• [JSC] Add ArrayIsArray intrinsic for Array.isArray

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Commits on Mar 12, 2026

• [JSC] Split PropertyInlineCache into subclasses

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Commits on Mar 11, 2026

• [JSC] Fix FTL BigInt operations for comparisons

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• [JSC] GetById megamorphic IC should handle String too

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Commits on Mar 9, 2026

• [JSC] Add SourceDump option to JITDump

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• [JSC] Micro-optimize triggerPromiseReactions

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• [JSC] Combine HandlerIC with DataIC in PropertyInlineCache

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• Adopt LIFETIME_BOUND in more places in JavaScriptCore

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Commits on Mar 6, 2026

• [JSC] Rename StructureStubInfo to PropertyInlineCache

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• [JSC] Add IRDump option with JITDump

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