[wp-trac] [WordPress Trac] #59443: Block Supports: Re-use instance of Tag Processor when adding layout classes

[WordPress Trac]

#59443: Block Supports: Re-use instance of Tag Processor when adding layout classes
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 Reporter:  dmsnell                    |       Owner:  isabel_brison
     Type:  enhancement                |      Status:  reopened
 Priority:  normal                     |   Milestone:  6.4
Component:  Editor                     |     Version:  trunk
 Severity:  normal                     |  Resolution:
 Keywords:  gutenberg-merge has-patch  |     Focuses:  performance
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Changes (by spacedmonkey):

 * focuses:   => performance


Comment:

 While testing the WordPress 6.4 release, I noticed that
 `wp_render_layout_support_flag` is now using a lot of resources. This
 seems to be because this function gets calls a lot ( around 300-400 times
 per page load ) and uses WP_HTML_Tag_Processor to update html markup. See
 screenshot attached.

 Reopenning ticket to see if we can fix the performance regression here.

 CC @isabel_brison @dmsnell for their thoughts as they committed this. Also
 flagging to @joemcgill and @flixos90 for performance reviews of patches.

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Ticket URL: <https://core.trac.wordpress.org/ticket/59443#comment:14>
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