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    <body><span class="vcard"><a class="email" href="mailto:akling&#64;apple.com" title="Andreas Kling &lt;akling&#64;apple.com&gt;"> <span class="fn">Andreas Kling</span></a>
</span> changed
              <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Optimize style invalidations for attribute selectors"
   href="https://bugs.webkit.org/show_bug.cgi?id=154242">bug 154242</a>
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            <th>What</th>
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           <td style="text-align:right;">Attachment #271345 Flags</td>
           <td>review?
           </td>
           <td>review+
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            <b><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Optimize style invalidations for attribute selectors"
   href="https://bugs.webkit.org/show_bug.cgi?id=154242#c4">Comment # 4</a>
              on <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Optimize style invalidations for attribute selectors"
   href="https://bugs.webkit.org/show_bug.cgi?id=154242">bug 154242</a>
              from <span class="vcard"><a class="email" href="mailto:akling&#64;apple.com" title="Andreas Kling &lt;akling&#64;apple.com&gt;"> <span class="fn">Andreas Kling</span></a>
</span></b>
        <pre>Comment on <span class=""><a href="attachment.cgi?id=271345&amp;action=diff" name="attach_271345" title="patch">attachment 271345</a> <a href="attachment.cgi?id=271345&amp;action=edit" title="patch">[details]</a></span>
patch

View in context: <a href="https://bugs.webkit.org/attachment.cgi?id=271345&amp;action=review">https://bugs.webkit.org/attachment.cgi?id=271345&amp;action=review</a>

r=me
This is a really solid performance hack!

<span class="quote">&gt; Source/WebCore/style/AttributeChangeInvalidation.h:47
&gt; +    using ClassChangeVector = Vector&lt;AtomicStringImpl*, 4&gt;;</span >

why</pre>
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