Bug 130939 – Make RenderStyle's non inherited flags more JSC friendly

• Component: New Bugs
• Status: RESOLVED FIXED

[Benjamin Poulain]

Make RenderStyle's non inherited flags more JSC friendly

[Benjamin Poulain]

Created attachment 228120 [details]
Patch

[WebKit Commit Bot]

Attachment 228120 [details] did not pass style-queue:


ERROR: Source/WebCore/rendering/style/RenderStyle.h:471:  noninherited_flags is incorrectly named. Don't use underscores in your identifier names.  [readability/naming/underscores] [4]
Total errors found: 1 in 7 files


If any of these errors are false positives, please file a bug against check-webkit-style.

[Andreas Kling]

Comment on attachment 228120 [details]
Patch

r=me!

Would it be possible to mash the ref count together with the flag bits somehow in the future?

[Andreas Kling]

Comment on attachment 228120 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=228120&action=review

> Source/WebCore/rendering/style/RenderStyle.h:165
> +            // Only a subset i copied because NonInheritedFlags contains a bunch of stuff other than real style data.

i copied -> is copied

[Benjamin Poulain]

Committed r166465: <http://trac.webkit.org/changeset/166465>

[Benjamin Poulain]

(In reply to comment #3)
> (From update of attachment 228120 [details])
> r=me!
> 
> Would it be possible to mash the ref count together with the flag bits somehow in the future?


Looks like there are only 24 bits left in total. A bit short for the ref count.

If we use TBI we can get rid of tons of stuff. The change would be big though :)

[Andreas Kling]

(In reply to comment #6)
> (In reply to comment #3)
> > (From update of attachment 228120 [details] [details])
> > r=me!
> > 
> > Would it be possible to mash the ref count together with the flag bits somehow in the future?
> 
> 
> Looks like there are only 24 bits left in total. A bit short for the ref count.
> 
> If we use TBI we can get rid of tons of stuff. The change would be big though :)

We could also move some of the rarely-used flags to substructures. Anyways, NABD, but something to consider in the future.

[Csaba Osztrogonác]

It broke the Apple Windows debug build.

[Brent Fulgham]

This broke the Windows build, probably because it is 32-bit:

12>c:\projects\webkit\opensource\source\webcore\rendering\style\RenderStyle.cpp(78): error C2338: RenderStyle_should_stay_small (..\rendering\style\StyleAllInOne.cpp)