Source/core/dom/Document.cpp - Issue 15871005: Avoid N^2 walk placing renderers when building the render tree

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Unified Diff: Source/core/dom/Document.cpp

Issue 15871005: Avoid N^2 walk placing renderers when building the render tree (Closed) Base URL: https://chromium.googlesource.com/chromium/blink.git@master

Patch Set: Adding a mitigation for the perf regression to Element::recalcStyle. Created 7 years, 6 months ago

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Index: Source/core/dom/Document.cpp

diff --git a/Source/core/dom/Document.cpp b/Source/core/dom/Document.cpp

index 6f6aa1f26a94ecabfb16cc4b7f83b79bbe850c21..f5d6e674eb7bec2631125e00060583b463bc750d 100644

--- a/Source/core/dom/Document.cpp

+++ b/Source/core/dom/Document.cpp

@@ -1698,7 +1698,7 @@ void Document::recalcStyle(StyleChange change)

renderer()->setStyle(documentStyle.release());

}

- for (Node* n = firstChild(); n; n = n->nextSibling()) {

+ for (Node* n = lastChild(); n; n = n->previousSibling()) {

if (!n->isElementNode())

continue;

Element* element = toElement(n);

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