Commit graph

3 commits

Author SHA1 Message Date
Jelle Raaijmakers
e123d48043 AK: Add SentinelOptional
We specialize `Optional<T>` for value types that inherently support some
kind of "empty" value or whose value range allow for a unlikely to be
useful sentinel value that can mean "empty", instead of the boolean flag
a regular Optional<T> needs to store. Because of padding, this often
means saving 4 to 8 bytes per instance.

By extending the new `SentinelOptional<T, Traits>`, these
specializations are significantly simplified to just having to define
what the sentinel value is, and how to identify a sentinel value.
2026-03-20 12:03:36 +01:00
Andreas Kling
a9cc425cde LibJS+LibWeb: Add missing GC marking visits
This adds visit_edges(Cell::Visitor&) methods to various helper structs
that contain GC pointers, and makes sure they are called from owning
GC-heap-allocated objects as needed.

These were found by our Clang plugin after expanding its capabilities.
The added rules will be enforced by CI going forward.
2026-01-07 12:48:58 +01:00
Andreas Kling
bad16dc0e0 LibJS: Cache fully-formed PropertyKeys in Executable
Instead of creating PropertyKeys on the fly during interpreter
execution, we now store fully-formed ones in the Executable.

This avoids a whole bunch of busywork in property access instructions
and substantially reduces code size bloat.
2025-12-11 14:34:45 -06:00