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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Optimization introduces branch where none existed in the LLVM IR"
href="https://bugs.llvm.org/show_bug.cgi?id=42901">42901</a>
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<th>Summary</th>
<td>Optimization introduces branch where none existed in the LLVM IR
</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
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<th>OS</th>
<td>Linux
</td>
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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
</td>
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<th>Component</th>
<td>Interprocedural Optimizations
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>npmccallum@redhat.com
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
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<p>
<div>
<pre>First, I'm not sure if I've picked the correct component. Please move it
elsewhere if needed.
And example of the problem is here:
<a href="https://godbolt.org/z/mTzWxX">https://godbolt.org/z/mTzWxX</a>
Notice that the optimized code introduces a conditional operation which isn't
great given the fact that the input was crafted to avoid conditional
operations.
I ran this through llc over a loop of architectures and this problem occurs on
all architectures.</pre>
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