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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [CodeGen] DominatorTree not kept up to date for stack-overflow-in-load-hoisting.ll"
href="https://llvm.org/bugs/show_bug.cgi?id=26736">26736</a>
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<th>Summary</th>
<td>[CodeGen] DominatorTree not kept up to date for stack-overflow-in-load-hoisting.ll
</td>
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<th>Product</th>
<td>Polly
</td>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Windows XP
</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
</td>
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<th>Component</th>
<td>Other
</td>
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<th>Assignee</th>
<td>polly-dev@googlegroups.com
</td>
</tr>
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<th>Reporter</th>
<td>llvm@meinersbur.de
</td>
</tr>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
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<th>Classification</th>
<td>Unclassified
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</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=15945" name="attach_15945" title="stack-overflow-in-load-hoisting.ll with added -verify-dom-info">attachment 15945</a> <a href="attachment.cgi?id=15945&action=edit" title="stack-overflow-in-load-hoisting.ll with added -verify-dom-info">[details]</a></span>
stack-overflow-in-load-hoisting.ll with added -verify-dom-info
The test case stack-overflow-in-load-hoisting.ll fails when adding
-verify-dom-info:
DominatorTree is not up to date!
Computed:
=============================--------------------------------
Inorder Dominator Tree: DFSNumbers invalid: 8 slow queries.
[1] %entry {0,13}
[2] %for.cond.12.preheader.lr.ph {1,12}
[3] %polly.split_new_and_old {4294967295,4294967295}
[4] %polly.preload.begin {4294967295,4294967295}
[5] %for.body.14.lr.ph {2,11}
[6] %for.body.14 {3,10}
[7] %for.end {4,9}
[8] %if.end.loopexit {5,8}
[5] %polly.start {4294967295,4294967295}
[6] %polly.exiting {4294967295,4294967295}
[5] %polly.merge_new_and_old {4294967295,4294967295}
[6] %if.end {6,7}
Actual:
=============================--------------------------------
Inorder Dominator Tree:
[1] %entry {0,21}
[2] %for.cond.12.preheader.lr.ph {1,20}
[3] %polly.split_new_and_old {2,19}
[4] %polly.preload.begin {3,18}
[5] %polly.start {4,5}
[5] %for.body.14.lr.ph {6,17}
[6] %for.body.14 {7,16}
[7] %for.end {8,15}
[8] %if.end.loopexit {9,14}
[9] %polly.merge_new_and_old {10,13}
[10] %if.end {11,12}
This happens when NodeBuilder.preloadInvariantLoads() return false. The
follow-up code does not try to repair the DominatorTree for the stub code.</pre>
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