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Commits on May 15, 2026

• [JSC] Extend megamorphic ByVal IC with symbols

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Commits on May 14, 2026

• Use modern integer hash

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Commits on Mar 30, 2026

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

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Commits on Mar 29, 2026

• [JSC] Introduce butterfly-less objects

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Commits on Mar 27, 2026

• [JSC] Introduce Realm-less Objects

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Commits on Feb 23, 2026

• [JSC] Merge RegisterSetBuilder into RegisterSet

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Commits on Jan 31, 2026

• [LOL] Add remaining jump bytecodes

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Commits on Dec 12, 2025

• Simplify StructureID encoding scheme.

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  Mark Lam

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Commits on Sep 30, 2025

• [JSC] Math.random JIT path uses arithmetic instead of logical right shifts

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Commits on Jul 10, 2025

• [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 May 3, 2025

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

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Commits on Apr 17, 2025

• Replace std::variant with Variant in code

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Commits on Apr 9, 2025

• [BBQ] Handle oversized allocations by doing 64-bit math rather than an extra branch

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Commits on Apr 4, 2025

• Unreviewed, reverting 292040@main.

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Commits on Mar 28, 2025

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

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Commits on Mar 12, 2025

• Unreviewed, reverting 292008@main.

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• [JSC] Use 3-operand instructions more in Baseline / DFG

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• [JSC] Optimize DataView.prototype.byteLength handling in JIT

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Commits on Mar 6, 2025

• [JSC] emitEncodeStructureID should be a no-op when the structureIDMask is -1

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Commits on Feb 23, 2025

• [JSC] Simplify AssemblyHelpers::purifyNaN

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Commits on Feb 8, 2025

• [JSC] Remove unnecessary underflow check for stack pointer

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Commits on Feb 1, 2025

• [JSC] Move OverridesGetPrototype to inline flags

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Commits on Jan 3, 2025

• Change TZoneHeap so that it can be enabled/disabled based on a runtime configuration.

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  Mark Lam

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Commits on Nov 19, 2024

• Replace WTF::bitwise_cast with std::bit_cast

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  cdumez

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Commits on Oct 30, 2024

• Added skip markers for JavaScriptCore and WebCore files that do not conform to -Wunsafe-buffer-usage

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  geoffreygaren

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Commits on Sep 13, 2024

• [JSC] Make double constant materialization better

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Commits on Sep 11, 2024

• Share JS -> Wasm IC entrypoint code

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Commits on Aug 13, 2024

• [JSC] Simplify ArityFixup

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Commits on Jul 24, 2024

• Merge Wasm::Instance into JSWebAssemblyInstance

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• Unreviewed, reverting 281277@main.

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  aj062

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• Merge Wasm::Instance into JSWebAssemblyInstance

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  kmiller68

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Commits on Jul 5, 2024

• Fix build issues with latest Clang

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  kmiller68

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Commits on Jun 26, 2024

• [JSC] Add inlined fast path for jfalse

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Commits on Jun 24, 2024

• Make it harder to use roundUpToMultipleOf wrong by using template argument for alignment

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  justinmichaud

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Commits on Jun 15, 2024

• Apply more constexpr for offsetOf

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