Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: ef19f93eea992586bc6636a05d1445d0200ca626
https://github.com/WebKit/WebKit/commit/ef19f93eea992586bc6636a05d1445d0200ca626
Author: Simon Fraser <[email protected]>
Date: 2024-01-05 (Fri, 05 Jan 2024)
Changed paths:
M Source/WebCore/dom/CharacterData.cpp
M Source/WebCore/dom/CharacterData.h
M Source/WebCore/dom/Node.h
M Source/WebCore/html/HTMLObjectElement.cpp
M Source/WebCore/inspector/agents/InspectorDOMAgent.cpp
M Source/WebCore/rendering/updating/RenderTreeUpdater.cpp
M Source/WebCore/style/StyleTreeResolver.cpp
Log Message:
-----------
Cache "containsOnlyASCIIWhitespace" on Node
https://bugs.webkit.org/show_bug.cgi?id=267010
rdar://120391238
Reviewed by Ryosuke Niwa.
The call to `text->containsOnlyASCIIWhitespace()` in
TreeResolver::resolveComposedTree() shows up on MotionMark
profiles (in the Design subtest). We can cache this state for Text nodes by
using two bits from Node's StateFlags.
The "known" state is cleared by functions on CharacterData that mutate the
content.
* Source/WebCore/dom/CharacterData.cpp:
(WebCore::CharacterData::substringData const):
(WebCore::CharacterData::parserAppendData):
(WebCore::CharacterData::setDataWithoutUpdate):
(WebCore::CharacterData::setDataAndUpdate):
(WebCore::CharacterData::containsOnlyASCIIWhitespace const):
(WebCore::CharacterData::substringData): Deleted.
* Source/WebCore/dom/CharacterData.h:
(WebCore::CharacterData::setDataWithoutUpdate): Deleted.
* Source/WebCore/dom/Node.h:
* Source/WebCore/html/HTMLObjectElement.cpp:
(WebCore::HTMLObjectElement::hasFallbackContent const):
(WebCore::preventsParentObjectFromExposure):
* Source/WebCore/inspector/agents/InspectorDOMAgent.cpp:
(WebCore::containsOnlyASCIIWhitespace):
* Source/WebCore/rendering/updating/RenderTreeUpdater.cpp:
(WebCore::RenderTreeUpdater::updateRenderTree):
(WebCore::RenderTreeUpdater::textRendererIsNeeded):
* Source/WebCore/style/StyleTreeResolver.cpp:
(WebCore::Style::TreeResolver::resolveComposedTree):
Canonical link: https://commits.webkit.org/272724@main
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