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<base href="https://llvm.org/bugs/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [LoopVersioning] lit test hits invalid domtree assert w/ XDEBUG"
href="https://llvm.org/bugs/show_bug.cgi?id=27487">27487</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>[LoopVersioning] lit test hits invalid domtree assert w/ XDEBUG
</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>gberry@codeaurora.org
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>The following lit test hits an assert in verifyDomTree() when LLVM is compiled
w/ XDEBUG:
LLVM :: Transforms/LoopVersioning/noalias-version-twice.ll
Output:
/local/mnt/gberry/test/build-xdbg/llvm/./bin/opt -basicaa -loop-distribute
-scoped-noalias -loop-versioning -S <
/local/mnt/gberry/test/llvm/test/Transforms/LoopVersioning/noalias-version-twice.ll
| /local/mnt/gberry/test/build-xdbg/llvm/./bin/FileCheck
/local/mnt/gberry/test/llvm/test/Transforms/LoopVersioning/noalias-version-twice.ll
--
Exit Code: 2
Command Output (stderr):
--
DominatorTree is not up to date!
Computed:
=============================--------------------------------
Inorder Dominator Tree: DFSNumbers invalid: 4 slow queries.
[1] %entry {0,23}
[2] %for.body.lver.check {1,22}
[3] %for.body.lver.orig.lver.check {2,5}
[4] %for.body.lver.orig.ph {4294967295,4294967295}
[5] %for.body.lver.orig {3,4}
[4] %for.body.lver.orig.ph.lver.orig {4294967295,4294967295}
[5] %for.body.lver.orig.lver.orig {4294967295,4294967295}
[4] %for.end {17,18}
[3] %for.body.ldist1.lver.check {6,21}
[4] %for.body.ldist1.ph {4294967295,4294967295}
[5] %for.body.ldist1 {7,20}
[4] %for.body.ldist1.ph.lver.orig {4294967295,4294967295}
[5] %for.body.ldist1.lver.orig {4294967295,4294967295}
[4] %for.body.lver.check40 {8,19}
[5] %for.body.ph {9,12}
[6] %for.body {10,11}
[5] %for.body.ph.lver.orig41 {13,16}
[6] %for.body.lver.orig42 {14,15}
Actual:
=============================--------------------------------
Inorder Dominator Tree:
[1] %entry {0,35}
[2] %for.body.lver.check {1,34}
[3] %for.body.lver.orig.lver.check {2,11}
[4] %for.body.lver.orig.ph.lver.orig {3,6}
[5] %for.body.lver.orig.lver.orig {4,5}
[4] %for.body.lver.orig.ph {7,10}
[5] %for.body.lver.orig {8,9}
[3] %for.end {12,13}
[3] %for.body.ldist1.lver.check {14,33}
[4] %for.body.ldist1.ph.lver.orig {15,18}
[5] %for.body.ldist1.lver.orig {16,17}
[4] %for.body.lver.check40 {19,28}
[5] %for.body.ph.lver.orig41 {20,23}
[6] %for.body.lver.orig42 {21,22}
[5] %for.body.ph {24,27}
[6] %for.body {25,26}
[4] %for.body.ldist1.ph {29,32}
[5] %for.body.ldist1 {30,31}
#0 0x00000000017f7158 llvm::sys::PrintStackTrace(llvm::raw_ostream&)
(/local/mnt/gberry/test/build-xdbg/llvm/bin/opt+0x17f7158)
#1 0x00000000017f5946 llvm::sys::RunSignalHandlers()
(/local/mnt/gberry/test/build-xdbg/llvm/bin/opt+0x17f5946)
#2 0x00000000017f7c86 SignalHandler(int)
(/local/mnt/gberry/test/build-xdbg/llvm/bin/opt+0x17f7c86)
#3 0x00007f5dec901cb0 __restore_rt
(/lib/x86_64-linux-gnu/libpthread.so.0+0xfcb0)
#4 0x00007f5debac60d5 gsignal
/build/eglibc-rrybNj/eglibc-2.15/signal/../nptl/sysdeps/unix/sysv/linux/raise.c:64:0
#5 0x00007f5debac983b abort
/build/eglibc-rrybNj/eglibc-2.15/stdlib/abort.c:93:0
#6 0x00000000013dd53a llvm::DominatorTree::verifyDomTree() const
(/local/mnt/gberry/test/build-xdbg/llvm/bin/opt+0x13dd53a)
#7 0x0000000001414f69 llvm::PMDataManager::verifyPreservedAnalysis(llvm::Pass*)
(/local/mnt/gberry/test/build-xdbg/llvm/bin/opt+0x1414f69)
#8 0x0000000001418708 llvm::FPPassManager::runOnFunction(llvm::Function&)
(/local/mnt/gberry/test/build-xdbg/llvm/bin/opt+0x1418708)
#9 0x00000000014188db llvm::FPPassManager::runOnModule(llvm::Module&)
(/local/mnt/gberry/test/build-xdbg/llvm/bin/opt+0x14188db)
#10 0x0000000001418d98 llvm::legacy::PassManagerImpl::run(llvm::Module&)
(/local/mnt/gberry/test/build-xdbg/llvm/bin/opt+0x1418d98)
#11 0x000000000063b74e main
(/local/mnt/gberry/test/build-xdbg/llvm/bin/opt+0x63b74e)
#12 0x00007f5debab176d __libc_start_main
/build/eglibc-rrybNj/eglibc-2.15/csu/libc-start.c:258:0
#13 0x0000000000626cad _start
(/local/mnt/gberry/test/build-xdbg/llvm/bin/opt+0x626cad)
Stack dump:
0. Program arguments: /local/mnt/gberry/test/build-xdbg/llvm/./bin/opt
-basicaa -loop-distribute -scoped-noalias -loop-versioning -S
1. Running pass 'Function Pass Manager' on module '<stdin>'.
FileCheck error: '-' is empty.</pre>
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