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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [JSC] Consider converting ArithSub(..., 0) => ToNumber(...)"
href="https://bugs.webkit.org/show_bug.cgi?id=155240">155240</a>
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<th>Summary</th>
<td>[JSC] Consider converting ArithSub(..., 0) => ToNumber(...)
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr>
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<th>Product</th>
<td>WebKit
</td>
</tr>
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<th>Version</th>
<td>WebKit Nightly Build
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<th>Hardware</th>
<td>Unspecified
</td>
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<th>OS</th>
<td>Unspecified
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>Normal
</td>
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<th>Priority</th>
<td>P2
</td>
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<th>Component</th>
<td>JavaScriptCore
</td>
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<th>Assignee</th>
<td>webkit-unassigned@lists.webkit.org
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</tr>
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<th>Reporter</th>
<td>utatane.tea@gmail.com
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<p>
<div>
<pre>value - 0 is an idiom to apply ToNumber in JS. (+ 0 is not typically used because "string" + 0 => "string0").
I've run octane and found box2d performs this several times.
(The code `... - 0` can be seen in kraken's fft, dft, etc. But this path is not used in the benchmark run).
Of course, before doing this, we should investigate the impact more...</pre>
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