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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Cannot select: intrinsic %llvm.aarch64.neon.sqshrun"
href="https://llvm.org/bugs/show_bug.cgi?id=28528">28528</a>
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<th>Summary</th>
<td>Cannot select: intrinsic %llvm.aarch64.neon.sqshrun
</td>
</tr>
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<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>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
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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>Backend: AArch64
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>alina.sbirlea@gmail.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>Created <span class=""><a href="attachment.cgi?id=16735" name="attach_16735" title="Test showing the failure.">attachment 16735</a> <a href="attachment.cgi?id=16735&action=edit" title="Test showing the failure.">[details]</a></span>
Test showing the failure.
We've come across this testcase where the following sequence fails to lower
intrinsic sqshrun.
Fulltest attached (llc test_reduced.ll to reproduce).
%tmp1906 = add nsw <8 x i32> undef, undef
%tmp1908 = shufflevector <8 x i32> %tmp1906, <8 x i32> undef, <4 x i32> <i32
0, i32 1, i32 2, i32 3>
%tmp1909 = call <4 x i16> @llvm.aarch64.neon.sqshrun.v4i16(<4 x i32>
%tmp1908, i32 18) #0
%tmp1914 = getelementptr inbounds i16, i16* undef, i64 8
%tmp1915 = bitcast i16* %tmp1914 to <4 x i16>*
store <4 x i16> %tmp1909, <4 x i16>* %tmp1915, align 16</pre>
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