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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Transform hypot(a, b) to sqrt(a*a + b*b) in fast math mode"
href="https://bugs.llvm.org/show_bug.cgi?id=42944">42944</a>
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<th>Summary</th>
<td>Transform hypot(a, b) to sqrt(a*a + b*b) in fast math mode
</td>
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<th>Product</th>
<td>libraries
</td>
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<th>Version</th>
<td>trunk
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Linux
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>enhancement
</td>
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>Scalar Optimizations
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>david.bolvansky@gmail.com
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
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<p>
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<pre>hypot(a, b) to sqrt(a*a + b*b) in -Ofast?
1, Is it ok to increase uses of a,b? Since pow(a, 2) is optimized to a*a,
probably yes..
2, Is a probability of overflow for 'a*a + b*b' high or not ? (whether this
transformation is fine for -Ofast)</pre>
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