88570 2012-06-07 13:13:54 -0700 Cache RenderLayer::isRootLayer for better performance 2012-09-18 11:57:34 -0700 1 1 1 Unclassified WebKit Layout and Rendering 528+ (Nightly build) All All RESOLVED FIXED P2 Normal --- 75001 92258 1 jchaffraix jchaffraix eric jamesr ojan simon.fraser webkit.review.bot oldest_to_newest 643832 0 jchaffraix 2012-06-07 13:13:54 -0700 The current implementation is: bool isRootLayer() const { return renderer()->isRenderView(); } Our renderer() won't change during the RenderLayer lifetime time, nor will its type. This means we could easily cache this information in the constructor. Adding this caching seems to help with painting time on http://dglazkov.github.com/performance-tests/biggrid.html. 643854 1 146373 jchaffraix 2012-06-07 13:40:39 -0700 Created attachment 146373 Proposed new caching. 643917 2 146373 ojan 2012-06-07 14:30:10 -0700 Comment on attachment 146373 Proposed new caching. Much more readable now too! 643981 3 146373 webkit.review.bot 2012-06-07 15:27:50 -0700 Comment on attachment 146373 Proposed new caching. Clearing flags on attachment: 146373 Committed r119761: <http://trac.webkit.org/changeset/119761> 643982 4 webkit.review.bot 2012-06-07 15:27:54 -0700 All reviewed patches have been landed. Closing bug. 146373 2012-06-07 13:40:39 -0700 2012-06-07 15:27:50 -0700 Proposed new caching. bug-88570-20120607134039.patch text/plain 8528 jchaffraix U3VidmVyc2lvbiBSZXZpc2lvbjogMTE5NzM4CmRpZmYgLS1naXQgYS9Tb3VyY2UvV2ViQ29yZS9D aGFuZ2VMb2cgYi9Tb3VyY2UvV2ViQ29yZS9DaGFuZ2VMb2cKaW5kZXggNmFlMzBmYjUyNGQ5YWI4 NThlNzk2YjM3NWM1NTU0ODFlYTI3NDU4NC4uZTdiMDBlOTFiYWUzMWRiZWQ1NDBmNjBlMWM2MTM5 NWY2MDNhMTFkMSAxMDA2NDQKLS0tIGEvU291cmNlL1dlYkNvcmUvQ2hhbmdlTG9nCisrKyBiL1Nv dXJjZS9XZWJDb3JlL0NoYW5nZUxvZwpAQCAtMSwzICsxLDQyIEBACisyMDEyLTA2LTA3ICBKdWxp ZW4gQ2hhZmZyYWl4ICA8amNoYWZmcmFpeEB3ZWJraXQub3JnPgorCisgICAgICAgIENhY2hlIFJl bmRlckxheWVyOjppc1Jvb3RMYXllciBmb3IgYmV0dGVyIHBlcmZvcm1hbmNlCisgICAgICAgIGh0 dHBzOi8vYnVncy53ZWJraXQub3JnL3Nob3dfYnVnLmNnaT9pZD04ODU3MAorCisgICAgICAgIFJl dmlld2VkIGJ5IE5PQk9EWSAoT09QUyEpLgorCisgICAgICAgIENhY2hpbmcgY292ZXJlZCBieSBl eGlzdGluZyB0ZXN0cy4KKworICAgICAgICBSZW5kZXJMYXllcjo6aXNSb290TGF5ZXIoKSdzIGFu c3dlciB3aWxsIGJlIHRoZSBzYW1lIGR1cmluZyB0aGUgUmVuZGVyTGF5ZXIncworICAgICAgICBs 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