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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - missing float optimization"
href="https://bugs.llvm.org/show_bug.cgi?id=39535">39535</a>
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<th>Summary</th>
<td>missing float optimization
</td>
</tr>
<tr>
<th>Product</th>
<td>libraries
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>All
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>Backend: X86
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>trass3r@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>craig.topper@gmail.com, llvm-bugs@lists.llvm.org, llvm-dev@redking.me.uk, spatel+llvm@rotateright.com
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<p>
<div>
<pre>float test(float x)
{
return x ? 0 : x;
}
produces:
vxorps xmm1, xmm1, xmm1
vcmpeqss xmm1, xmm0, xmm1
vandps xmm0, xmm1, xmm0
gcc and icc give:
vxorps xmm0, xmm0, xmm0
<a href="https://gcc.godbolt.org/z/SA0HsT">https://gcc.godbolt.org/z/SA0HsT</a></pre>
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