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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - instcombine select optimization speculates trapping fdiv"
href="http://llvm.org/bugs/show_bug.cgi?id=22271">22271</a>
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<th>Summary</th>
<td>instcombine select optimization speculates trapping fdiv
</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>Windows NT
</td>
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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>P
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<th>Component</th>
<td>Scalar Optimizations
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>rnk@google.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
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<div>
<pre>Created <span class=""><a href="attachment.cgi?id=13712" name="attach_13712" title="test case">attachment 13712</a> <a href="attachment.cgi?id=13712&action=edit" title="test case">[details]</a></span>
test case
The original source code does something like:
double minval = 1e-3;
double x = bar();
double y = std::max(x, minval);
double z = 4.0 / y;
instcombine does some transform that eliminates the select.</pre>
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