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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Assertion failure in register coalescer with AMDGPU backend"
href="https://llvm.org/bugs/show_bug.cgi?id=26991">26991</a>
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<tr>
<th>Summary</th>
<td>Assertion failure in register coalescer with AMDGPU backend
</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>Register Allocator
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>tstellar@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=16050" name="attach_16050" title="Failing test case">attachment 16050</a> <a href="attachment.cgi?id=16050&action=edit" title="Failing test case">[details]</a></span>
Failing test case
I'm seeing an assertion failure with the attached testcase:
llc: ../include/llvm/CodeGen/SlotIndexes.h:124: llvm::IndexListEntry*
llvm::SlotIndex::listEntry() const: Assertion `isValid() && "Attempt to compare
reserved index."' failed.
To reproduce:
llc -mtriple=amdgcn--amdhsa -mcpu=fiji amdgpu-coalescer-assert.ll -o -
-verify-machineinstrs</pre>
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