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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [LoopInterchange] Assert triggered: "Branch leaving loop latch must have 2 successors""
href="https://bugs.llvm.org/show_bug.cgi?id=36586">36586</a>
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<th>Summary</th>
<td>[LoopInterchange] Assert triggered: "Branch leaving loop latch must have 2 successors"
</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>PC
</td>
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<th>OS</th>
<td>Linux
</td>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>enhancement
</td>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>Loop Optimizer
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>paulsson@linux.vnet.ibm.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
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<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=19991" name="attach_19991" title="reduced test case">attachment 19991</a> <a href="attachment.cgi?id=19991&action=edit" title="reduced test case">[details]</a></span>
reduced test case
bin/opt -mtriple=s390x-linux-gnu -mcpu=z13 tc_loopinterch_reduced.ll -S -o
out.opt -enable-gvn-sink -enable-loopinterchange -instcombine -inline -sroa
-early-cse-memssa -simplifycfg -jump-threading -instcombine -simplifycfg
-loop-rotate -simplifycfg -indvars -loop-interchange
opt: lib/Transforms/Scalar/LoopInterchange.cpp:758: llvm::BasicBlock*
getLoopLatchExitBlock(llvm::BasicBlock*, llvm::BasicBlock*): Assertion
`BI->getNumSuccessors() == 2 && "Branch leaving loop latch must have 2
successors"' failed.
...
#10 0x000002aa1bf23700 (anonymous
namespace)::LoopInterchange::runOnFunction(llvm::Function&)</pre>
</div>
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