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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Vector decomposing of unsupported widths unsupported."
href="https://bugs.llvm.org/show_bug.cgi?id=36618">36618</a>
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<th>Summary</th>
<td>Vector decomposing of unsupported widths unsupported.
</td>
</tr>
<tr>
<th>Product</th>
<td>libraries
</td>
</tr>
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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>enhancement
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>GlobalISel
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>Sonicadvance1@gmail.com
</td>
</tr>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
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<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=20007" name="attach_20007" title="Basic test case that will fail on AArch64 or x86-64 depending">attachment 20007</a> <a href="attachment.cgi?id=20007&action=edit" title="Basic test case that will fail on AArch64 or x86-64 depending">[details]</a></span>
Basic test case that will fail on AArch64 or x86-64 depending
GlobalISel doesn't support decomposing of unsupported vector widths in to
scalar operations.
This can be seen by attempting to do an operation on a <2 x i32> vector on
x86-64.
This can also be seen when attempting to do a <2 x float> vector operation on
AArch64, which is just an oversight in the original implementation.
I've attached a test case that can be compiled with llc to demonstrate the
issue.</pre>
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