113364 2013-03-26 21:01:11 -0700 Selection code spends a lot of time in InlineTextBox::localSelectionRect 2013-03-27 22:37:22 -0700 1 1 1 Unclassified WebKit HTML Editing 528+ (Nightly build) Unspecified Unspecified RESOLVED FIXED InRadar P2 Normal --- 113358 113478 1 rniwa rniwa darin enrica eric esprehn+autocc esprehn leviw ojan.autocc ojan tony webkit-bug-importer webkit.review.bot oldest_to_newest 864204 0 rniwa 2013-03-26 21:01:11 -0700 As far as I've sampled in the bug 113358, we're spending 5+% of time in InlineTextBox::localSelectionRect computing font width. But there is no need to do this when we're selecting the entire line box. 864205 1 195214 rniwa 2013-03-26 21:01:51 -0700 Created attachment 195214 Work in progress 1 864206 2 195215 rniwa 2013-03-26 21:02:56 -0700 Created attachment 195215 A/B test result with WIP1 864209 3 webkit-bug-importer 2013-03-26 21:03:56 -0700 <rdar://problem/13513153> 864211 4 webkit.review.bot 2013-03-26 21:11:31 -0700 Attachment 195214 did not pass style-queue: Failed to run "['Tools/Scripts/check-webkit-style', '--diff-files', u'Source/WebCore/rendering/InlineTextBox.cpp']" exit_code: 1 Source/WebCore/rendering/InlineTextBox.cpp:211: Tests for true/false, null/non-null, and zero/non-zero should all be done without equality comparisons. [readability/comparison_to_zero] [5] Total errors found: 1 in 1 files If any of these errors are false positives, please file a bug against check-webkit-style. 864664 5 195214 enrica 2013-03-27 10:36:54 -0700 Comment on attachment 195214 Work in progress 1 View in context: https://bugs.webkit.org/attachment.cgi?id=195214&action=review Missing ChangeLog file >> Source/WebCore/rendering/InlineTextBox.cpp:211 >> + if (sPos != 0 || ePos != static_cast<int>(m_len)) > > Tests for true/false, null/non-null, and zero/non-zero should all be done without equality comparisons. [readability/comparison_to_zero] [5] Please fix the style issue and add a comment. 864667 6 rniwa 2013-03-27 10:40:16 -0700 (In reply to comment #5) > (From update of attachment 195214 [details]) > View in context: https://bugs.webkit.org/attachment.cgi?id=195214&action=review > > Missing ChangeLog file > > >> Source/WebCore/rendering/InlineTextBox.cpp:211 > >> + if (sPos != 0 || ePos != static_cast<int>(m_len)) > > > > Tests for true/false, null/non-null, and zero/non-zero should all be done without equality comparisons. [readability/comparison_to_zero] [5] > > Please fix the style issue and add a comment. Oh, oops. This wasn't up for review. The one on https://bugs.webkit.org/show_bug.cgi?id=113358 is. I'm trying to add the performance test first so that people can verify my assertion that my patch improves the performance. 864701 7 195358 rniwa 2013-03-27 11:00:47 -0700 Created attachment 195358 Ready for review 864706 8 195358 enrica 2013-03-27 11:05:45 -0700 Comment on attachment 195358 Ready for review View in context: https://bugs.webkit.org/attachment.cgi?id=195358&action=review > Source/WebCore/rendering/InlineTextBox.cpp:209 > + FloatPoint startingPoint = FloatPoint(logicalLeft(), selTop); I would add a comment here about the optimization. 864835 9 rniwa 2013-03-27 13:49:17 -0700 Committed r147008: <http://trac.webkit.org/changeset/147008> 195214 2013-03-26 21:01:51 -0700 2013-03-27 11:00:40 -0700 Work in progress 1 wip113364 text/plain 888 rniwa SW5kZXg6IFNvdXJjZS9XZWJDb3JlL3JlbmRlcmluZy9JbmxpbmVUZXh0Qm94LmNwcAo9PT09PT09 PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09 PT09Ci0tLSBTb3VyY2UvV2ViQ29yZS9yZW5kZXJpbmcvSW5saW5lVGV4dEJveC5jcHAJKHJldmlz 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