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<base href="https://llvm.org/bugs/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [AVX512] incorrect code for boolean expression at -O0."
href="https://llvm.org/bugs/show_bug.cgi?id=28661">28661</a>
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<th>Summary</th>
<td>[AVX512] incorrect code for boolean expression at -O0.
</td>
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<th>Product</th>
<td>new-bugs
</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
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>new bugs
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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</tr>
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<th>Reporter</th>
<td>babokin@gmail.com
</td>
</tr>
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<th>CC</th>
<td>elena.demikhovsky@intel.com, igor.breger@intel.com, llvm-bugs@lists.llvm.org, Vsevolod.Livinskij@frtk.ru
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=16791" name="attach_16791" title="reproducer">attachment 16791</a> <a href="attachment.cgi?id=16791&action=edit" title="reproducer">[details]</a></span>
reproducer
Simple test case triggers incorrect code generation on AVX512 at -O0.
#include <stdio.h>
int main() {
bool b = true;
bool res = ((bool) (!(! b))) && true;
printf("%d (expected 1)\n", res);
return 0;
}
<span class="quote">> clang++ -O0 knl_bool_bug.cpp -march=knl
> sde -knl -- ./a.out</span >
0 (expected 1)</pre>
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