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Commits on Apr 17, 2026

• [Build Speed] Reduce the cost of StructureInlines.h

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Commits on Jan 30, 2026

• [JSC] Fix CompleteSubspace include

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  dhecht

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Commits on Dec 20, 2025

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

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  cdumez

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Commits on Jul 22, 2025

• Putting HashMap in a heap block hurts memory use, speed, code size (part 1)

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  darinadler

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Commits on May 3, 2025

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

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  cdumez

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Commits on Mar 28, 2025

• [BBQ] Inline (most) Wasm GC object allocations

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  kmiller68

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Commits on Mar 10, 2025

• [JSC] Fix integer overflow on armv7 in CompleteSubspace::tryAllocateSlow

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  eugeneia

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Commits on Mar 7, 2025

• [JSC] Make JSC::CompleteSubspace::allocateSlow memory exhaust explicit crash

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  Constellation

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Commits on Feb 28, 2025

• [JSC] Fix a bug not calling didAllocate for PreciseAllocation (from 290699@main)

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  Constellation

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Commits on Feb 20, 2025

• Remove IsoSubspace preciseOnly support

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  kmiller68

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• JSWebAssemblyInstance should be allocated out of a new PreciseSubspace.

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  kmiller68

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Commits on Jun 7, 2024

• Use "= default" for constructor and destructor in more JSC code

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  Ahmad Saleem

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Commits on Apr 1, 2024

• Add Options::maxHeapSizeAsRAMSizeMultiple() to limit max memory usage for testing.

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  Mark Lam

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Commits on Dec 14, 2023

• Add namespace qualifiers to a bunch of jsc types

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  Justin Michaud

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Commits on Apr 26, 2023

• [JSC] Clean up JSObject allocation in C++

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  Constellation

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Commits on Oct 6, 2022

• Revert clang-tidy change since it broke 32bit and watchOS

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  Constellation

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Commits on Sep 18, 2022

• Ran clang-tidy on JSC, WTF and bmalloc

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  mikhailramalho

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Commits on Dec 6, 2021

• Remove unneeded virtual allocator methods from Subspace.

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  Mark Lam

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Commits on Nov 19, 2021

• SubSpace constructors should take a const HeapCellType& instead of a HeapCellType*.

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  Mark Lam

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Commits on Nov 11, 2021

• Move m_doesGC from Heap to VM.

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  Mark Lam

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Commits on May 22, 2021

• Stop using holdLock() in JSC as it is not compatible with Clang thread safety analysis

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  cdumez

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Commits on Jun 4, 2020

• Add Options::validateDoesGC() for turning DoesGC validation on/off.

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  Mark Lam

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Commits on Jun 3, 2020

• [Re-landing] Enhance DoesGC verification to print more useful info when verification fails.

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  Mark Lam

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• Rolling out r262475 to unbreak Windows bot.

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  Mark Lam

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• Enhance DoesGC verification to print more useful info when verification fails.

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  Mark Lam

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Commits on May 15, 2020

• [IWYU] Remove unnecessary includes from JSC implementation files

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  rkirsling

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Commits on Nov 14, 2019

• [JSC] BlockDirectory's bits should be compact

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  Constellation

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Commits on Nov 9, 2019

• [JSC] Rename LargeAllocation to PreciseAllocation

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  Constellation

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• [JSC] Make IsoSubspace scalable

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  Constellation

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Commits on Aug 27, 2019

• Refactor to use VM& instead of VM* at as many places as possible.

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  Mark Lam

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Commits on Aug 19, 2019

• [WTF] Add makeUnique<T>, which ensures T is fast-allocated, makeUnique / makeUniqueWithoutFastMallocCheck part

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  Constellation

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Commits on Apr 1, 2019

• [JSC] Butterfly allocation from LargeAllocation should try "realloc" behavior if collector thread is not active

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  Constellation

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Commits on Feb 22, 2019

• Add more doesGC() assertions.

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  Mark Lam

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Commits on Jan 20, 2019

• [JSC] Shrink data structure size in JSC/heap

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  Constellation

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Commits on May 23, 2018

• Speed up JetStream/base64

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  Filip Pizlo

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