Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: 0e86b49069a5e3737c1cc7af554833d06580cc9a
https://github.com/WebKit/WebKit/commit/0e86b49069a5e3737c1cc7af554833d06580cc9a
Author: Ahmad Saleem <[email protected]>
Date: 2026-07-10 (Fri, 10 Jul 2026)
Changed paths:
M Source/WebCore/html/track/VTTCue.h
Log Message:
-----------
Reduce VTTCue size by regrouping m_displayDirection with adjacent small enums
https://bugs.webkit.org/show_bug.cgi?id=319026
rdar://181880375
Reviewed by Eric Carlson.
m_displayDirection (CSSValueID, a uint16_t enum) was declared immediately
before the double m_displaySize. Sitting on an 8-byte-aligned offset, its
2 bytes forced 6 bytes of padding before the double, wasting a full word.
Move it up next to m_writingDirection and m_cueAlignment (both 1-byte
enums), which already left 6 bytes of padding before the following
RefPtr<VTTRegion>. The enum now folds into that existing hole at no cost,
and m_displaySize leads its group without a preceding gap. This shrinks
the object by 8 bytes with no behavioral change.
* Source/WebCore/html/track/VTTCue.h:
Canonical link: https://commits.webkit.org/316950@main
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