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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - DFG should reduce division of a constant by a constant."
href="https://bugs.webkit.org/show_bug.cgi?id=151997">151997</a>
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<th>Summary</th>
<td>DFG should reduce division of a constant by a constant.
</td>
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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 Local Build
</td>
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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>
</tr>
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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>mark.lam@apple.com
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<p>
<div>
<pre>Running LayoutTests/svg/in-html/sizing/svg-inline.html produces a scenario where we see a division of a constant by another constant:
(lldb) p leftOperand
(JSC::SnippetOperand) $0 = {
m_resultType = (m_type = '\x05')
m_type = ConstInt32
m_val = (int32Val = 600, doubleVal = 6.0841863318852727E-310, rawBits = 123145302311512)
}
(lldb) p rightOperand
(JSC::SnippetOperand) $1 = {
m_resultType = (m_type = '\x05')
m_type = ConstInt32
m_val = (int32Val = 100, doubleVal = 6.0841863318605694E-310, rawBits = 123145302311012)
}
The DFG should have folded this into a constant int 6.</pre>
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