Andrew-Fryer

Summary

Primarily JSC with regular spillover into WebCore, focused on performance: order-file/PGO build tooling, benchmark harness work, inline capacity tuning, and fast paths such as `Array.prototype.indexOf` on NodeList. No security or hardening commits — the pattern is throughput optimization, not defensive work. The recurring theme worth watching is cache-validity elision: skipping repeated DOM checks when no JS has run or the version is unchanged, dropping "unnecessary" watchpoints, persisting invalidation state across FunctionExecutables, and removing an exception check in `appendCallSetJSValueResult`. Optimizations that narrow when a guard fires are where stale-assumption bugs originate, so those invalidation conditions are the natural place to probe.

Components

Security Fix History

• No security fixes recorded

Hardening Commits

• No hardening commits recorded

Recent Commits

• 2026-07-10 Add SP4 plan and patches for run-benchmark to run experimental suites
• 2026-06-29 [JSC] Avoid setting unnecessary watchpoints
• 2026-05-28 Reland use order files for macOS
• 2026-05-21 Use order files for WebCore and JavaScriptCore on macOS
• 2026-05-13 Disallow quick tier up recovery for builtins
• 2026-04-20 Add fast path for Array.prototype.indexOf on NodeList 2026-W16
• 2026-04-01 Persist whether FunctionExecutable singleton has been invalidated between FunctionExecutables
• 2026-04-01 SelectorFilter parentStack should have inline capacity
• 2026-03-29 Don't reserve capacity on InlineDisplay::Content::boxes
• 2026-02-23 pgo-profile should be able to decompress profiles
• 2026-02-09 Avoid redoing DOM checks when no js executed
• 2026-01-21 Avoid redoing DOM checks when version unchanged
• 2025-12-23 Remove appendCallSetJSValueResult exception check
• 2025-11-12 Simply canAllocateBits calculation