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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [Hexagon] J2_jump instruction with a global address fails with: Assertion `isMBB() && "Wrong MachineOperand accessor"'"
href="https://llvm.org/bugs/show_bug.cgi?id=26630">26630</a>
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<th>Summary</th>
<td>[Hexagon] J2_jump instruction with a global address fails with: Assertion `isMBB() && "Wrong MachineOperand accessor"'
</td>
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<th>Product</th>
<td>tools
</td>
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<th>Version</th>
<td>3.8
</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>
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>llc
</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>rcas@sics.se
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
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<th>Classification</th>
<td>Unclassified
</td>
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<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=15909" name="attach_15909" title="ZIP file with a test case to reproduce the failure and a tentative patch">attachment 15909</a> <a href="attachment.cgi?id=15909&action=edit" title="ZIP file with a test case to reproduce the failure and a tentative patch">[details]</a></span>
ZIP file with a test case to reproduce the failure and a tentative patch
llc fails when facing J2_jump instructions that do not refer to a basic block
but to a global address, such as:
J2_jump <ga:@putAC>
This yields to a failed assertion of the type `isMBB() && "Wrong MachineOperand
accessor"' triggered from HexagonInstrInfo.cpp and HexagonNewValueJump.cpp.
The failure can be reproduced by running llc on the attached LLVM IR function:
$ llc bugpoint-reduced-simplified.ll -march=hexagon -mcpu=hexagonv4
I also attach a small patch that fixes the issue (although it might not do it
in the best way).</pre>
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