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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Function verification fails after instcombine"
href="https://bugs.llvm.org/show_bug.cgi?id=46362">46362</a>
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<tr>
<th>Summary</th>
<td>Function verification fails after instcombine
</td>
</tr>
<tr>
<th>Product</th>
<td>libraries
</td>
</tr>
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<th>Version</th>
<td>trunk
</td>
</tr>
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<th>Hardware</th>
<td>All
</td>
</tr>
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<th>OS</th>
<td>All
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>Scalar Optimizations
</td>
</tr>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>evgueni.brevnov@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=23621" name="attach_23621" title="test case">attachment 23621</a> <a href="attachment.cgi?id=23621&action=edit" title="test case">[details]</a></span>
test case
<a href="https://reviews.llvm.org/rG21f7cf4057b75ac3bc46597415499dd0fc214e97">https://reviews.llvm.org/rG21f7cf4057b75ac3bc46597415499dd0fc214e97</a> enabled
function verification after SLP. Now it catches illegal IR which is produced by
instcombine:
opt -passes=instcombine -S test.ll
PHI node has multiple entries for the same basic block with different incoming
values!
%local_4_5.lcssa96.neg = phi i32 [ %.neg, %bci_77 ], [ %.neg1, %bci_77 ], [
%.neg2, %bci_112 ], [ -2, %bci_186 ]
label %bci_77
%.neg = xor i32 %local_4_.ph, -1
%.neg1 = xor i32 %local_4_.ph, -1
LLVM ERROR: Broken module found, compilation aborted!</pre>
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</p>
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