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Commits on Jun 2, 2026

• [JSC] MapIterator / SetIterator should be handled in DFG

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• [JSC] Add foundation of handling builtin iterators in fast-iteration-protocol

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Commits on Jun 1, 2026

• [JSC] Add String fast iteration

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Commits on May 18, 2026

• [JSC] Shrink sizeof(JSGenerator)

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Commits on May 15, 2026

• [JSC] Extend megamorphic ByVal IC with symbols

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Commits on Apr 27, 2026

• [JSC] Add Map / Set fast iteration

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Commits on Apr 21, 2026

• [JSC] Fix megamorphic IC ownProperty check

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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

• Further reduce use of jsCast<>()

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  cdumez

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Commits on Apr 19, 2026

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

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Commits on Apr 16, 2026

• [JSC] Remove JSInternalPromise

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Commits on Apr 2, 2026

• [JSC] Add IC with undefined/false/true/null property key

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Commits on Mar 27, 2026

• [JSC] Introduce Realm-less Objects

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Commits on Mar 18, 2026

• [JSC] Fix quick DFG tier-up causing premature jettison on OSR entry failure

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Commits on Mar 13, 2026

• [JSC] Update ICStats to record handler counts

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Commits on Mar 11, 2026

• [JSC] GetById megamorphic IC should handle String too

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Commits on Mar 6, 2026

• [JSC] Rename StructureStubInfo to PropertyInlineCache

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Commits on Feb 22, 2026

• [JSC] Implement Quick DFG Tier-Up for proven-stable functions

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Commits on Jan 15, 2026

• ThrowScopes should not be able to clear termination exceptions

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Commits on Dec 20, 2025

• Use WTF::move() instead of WTFMove() macro in Source/JavaScriptCore

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Commits on Oct 8, 2025

• Throwing TerminationException from a function prologue should zombify the top frame.

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  Mark Lam

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Commits on Sep 19, 2025

• [JSC] Further OMG should not rely on CallSiteIndex in stack

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Commits on Sep 17, 2025

• ReferenceError doesn't include variable name in error message

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Commits on Jul 11, 2025

• Unreviewed, relanding 297160@main

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Commits on Jul 10, 2025

• Unreviewed, reverting 297160@main.

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  webkit-commit-queue

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  hyjorc1

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• [JSC] Use `enum class` for `CompilationResult`, `CachedCodeBlockTag`, `CodeSpecializationKind` for Safer C++

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  Gumichocopengin8

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  kmiller68

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Commits on Jul 9, 2025

• [JSC] Add list style switch

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• [JSC] Use `enum class` for `ArityCheckMode` for Safer C++

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  Gumichocopengin8

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  kmiller68

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Commits on Jul 1, 2025

• operationNew(Sloppy|Strict)FunctionWithInvalidatedReallocationWatchpoint needs to also handle new function structure IDs

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  danlliu

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Commits on Jun 26, 2025

• Split function and method structure IDs

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  danlliu

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Commits on Jun 16, 2025

• [JSC] Relax GetById / GetByVal / GetByIdWithThis / GetByValWithThis megamorphic IC handling limitation

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Commits on Jun 13, 2025

• [JSC] Relax InById / InByVal megamorphic IC handling limitation

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Commits on Jun 7, 2025

• [JSC] Optimize eval code carefully

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Commits on May 27, 2025

• [JSC] Further enhance DFG mayExit validation

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Commits on May 4, 2025

• Use C++ [[fallthrough]]

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