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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Air::IRC doesn't need to have a special-case for uncolored Tmps since they all get colored"
href="https://bugs.webkit.org/show_bug.cgi?id=163548">163548</a>
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<th>Summary</th>
<td>Air::IRC doesn't need to have a special-case for uncolored Tmps since they all get colored
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<th>Classification</th>
<td>Unclassified
</td>
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<th>Product</th>
<td>WebKit
</td>
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<th>Version</th>
<td>WebKit Nightly Build
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<th>Hardware</th>
<td>All
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<th>OS</th>
<td>All
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>Normal
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<th>Priority</th>
<td>P2
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<th>Component</th>
<td>JavaScriptCore
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<th>Assignee</th>
<td>webkit-unassigned@lists.webkit.org
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<th>Reporter</th>
<td>fpizlo@apple.com
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<pre>IRC used to assume that no-degree Tmps can get any color. That's not true. No degree does not really mean no interference because of coalescable Moves. <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - Air::IRC needs to place all Tmps on some worklist, even if they have no interference edges"
href="show_bug.cgi?id=163509">Bug 163509</a> was about that. Now we just need to remove the other side of this special case: IRC still has a special case for uncolored Tmps. We don't need that anymore - a truly unused Tmp will get handled naturally by the algorithm.
If we ever find that large numbers of unused Tmps are putting a stress on IRC and making it run longer, then we could just add a Tmp pruning pass.
Also, it turns out that this special case is hiding other bugs. I'm investigating those now.</pre>
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