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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] Crash lowering saturating truncate."
href="https://llvm.org/bugs/show_bug.cgi?id=31589">31589</a>
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<th>Summary</th>
<td>[AVX512] Crash lowering saturating truncate.
</td>
</tr>
<tr>
<th>Product</th>
<td>libraries
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<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>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>mkuper@google.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Running llc on:
define void @ham() #0 {
%tmp = icmp ult <32 x i32> undef, <i32 255, i32 255, i32 255, i32 255, i32
255, i32 255, i32 255, i32 255, i32 255, i32 255, i32 255, i32 255, i32 255,
i32 255, i32 255, i32 255, i32 255, i32 255, i32 255, i32 255, i32 255, i32
255, i32 255, i32 255, i32 255, i32 255, i32 255, i32 255, i32 255, i32 255,
i32 255, i32 255>
%tmp2 = select <32 x i1> %tmp, <32 x i32> undef, <32 x i32> <i32 255, i32
255, i32 255, i32 255, i32 255, i32 255, i32 255, i32 255, i32 255, i32 255,
i32 255, i32 255, i32 255, i32 255, i32 255, i32 255, i32 255, i32 255, i32
255, i32 255, i32 255, i32 255, i32 255, i32 255, i32 255, i32 255, i32 255,
i32 255, i32 255, i32 255, i32 255, i32 255>
%tmp3 = trunc <32 x i32> %tmp2 to <32 x i8>
store <32 x i8> %tmp3, <32 x i8>* undef, align 1
ret void
}
attributes #0 = {"target-cpu"="skylake-avx512"}
Reaches unreachable in X86TargetLowering::LowerOperation():
Should not custom lower this!
UNREACHABLE executed at ../lib/Target/X86/X86ISelLowering.cpp:22990!</pre>
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