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<base href="https://bugs.llvm.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [Unroll-and-jam] Assertion `IDomNode && "Not immediate dominator specified for block!"' failed."
href="https://bugs.llvm.org/show_bug.cgi?id=48764">48764</a>
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<tr>
<th>Summary</th>
<td>[Unroll-and-jam] Assertion `IDomNode && "Not immediate dominator specified for block!"' failed.
</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>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>Scalar Optimizations
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>paulsson@linux.vnet.ibm.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
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<div>
<pre>Created <span class=""><a href="attachment.cgi?id=24384" name="attach_24384" title="reduced testcase">attachment 24384</a> <a href="attachment.cgi?id=24384&action=edit" title="reduced testcase">[details]</a></span>
reduced testcase
opt -mcpu=z14 -O3 -enable-unroll-and-jam -allow-unroll-and-jam
-unroll-and-jam-count=8 tc_crash0_aftercreduce.ll -o - S
#9 0x0000000003a36a9c llvm::UnrollAndJamLoop(llvm::Loop*, unsigned int,
unsigned int, unsigned int, bool, llvm::LoopInfo*, llvm::ScalarEvolution*,
llvm::DominatorTree*, llvm::AssumptionCache*, llvm::TargetTransformInfo const*,
llvm::OptimizationRemarkEmitter*, llvm::Loop**) (./bin/opt+0x3a36a9c)
#10 0x000000000372f036 tryToUnrollAndJamLoop(llvm::Function&,
llvm::DominatorTree&, llvm::LoopInfo&, llvm::ScalarEvolution&,
llvm::TargetTransformInfo const&, llvm::AssumptionCache&,
llvm::DependenceInfo&, llvm::OptimizationRemarkEmitter&, int) (.isra.0)
(./bin/opt+0x372f036)
#11 0x000000000373054e (anonymous
namespace)::LoopUnrollAndJam::runOnFunction(llvm::Function&)
(./bin/opt+0x373054e)</pre>
</div>
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