tree f5522af49dafa3e63415f2e69446caa3515a425d
parent ea626151c57fdfdc2b24a0aaf4e3082ceca4e403
author ysuzuki@apple.com <ysuzuki@apple.com@268f45cc-cd09-0410-ab3c-d52691b4dbfc> 1582903289 +0000
committer ysuzuki@apple.com <ysuzuki@apple.com@268f45cc-cd09-0410-ab3c-d52691b4dbfc> 1582903289 +0000

Shrink-to-fit Display::LineBox/Display::Run vectors.
https://bugs.webkit.org/show_bug.cgi?id=208343

Reviewed by Antti Koivisto.

From the collected data in PLT5, 95% of Runs / LineBoxes are <= 4, while we are having 10 and 5 inlineCapacity.
We adjust this inlineCapacity to 4 based on this number. It also covers almost all of Speedometer2.0 content (in it, 99.9% is 1).
We also call `shrinkToFit` to make it the exact size after baking Display::InlineContent. It should be no-op in 95% cases.

* layout/displaytree/DisplayInlineContent.h:
* layout/inlineformatting/InlineFormattingState.h:
(WebCore::Layout::InlineFormattingState::shrinkDisplayInlineContent):
* layout/integration/LayoutIntegrationLineLayout.cpp:
(WebCore::LayoutIntegration::LineLayout::layout):


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@257637 268f45cc-cd09-0410-ab3c-d52691b4dbfc