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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - opt -loop-unroll -iv-users crashes when doing "Freeing Pass 'Induction Variable Users' on Loop '<deleted>'...""
href="https://bugs.llvm.org/show_bug.cgi?id=44226">44226</a>
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<tr>
<th>Summary</th>
<td>opt -loop-unroll -iv-users crashes when doing "Freeing Pass 'Induction Variable Users' on Loop '<deleted>'..."
</td>
</tr>
<tr>
<th>Product</th>
<td>new-bugs
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</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>enhancement
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>new bugs
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>mikael.holmen@ericsson.com
</td>
</tr>
<tr>
<th>CC</th>
<td>htmldeveloper@gmail.com, llvm-bugs@lists.llvm.org
</td>
</tr></table>
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<div>
<pre>Created <span class=""><a href="attachment.cgi?id=22895" name="attach_22895" title="bbi-36444.ll reproducer">attachment 22895</a> <a href="attachment.cgi?id=22895&action=edit" title="bbi-36444.ll reproducer">[details]</a></span>
bbi-36444.ll reproducer
llvm version: f3dafd21a36f
Reproduce with:
opt -o /dev/null bbi-36444.ll -loop-unroll -iv-users
Result:
Stack dump:
0. Program arguments: build-all-builtins/bin/opt -o /dev/null bbi-36444.ll
-loop-unroll -iv-users
1. Running pass 'Function Pass Manager' on module 'bbi-36444.ll'.
2. Running pass 'Loop Pass Manager' on function '@test'
3. Releasing pass 'Induction Variable Users'
#0 0x0000000003e69574 PrintStackTraceSignalHandler(void*)
(build-all-builtins/bin/opt+0x3e69574)
#1 0x0000000003e6725e llvm::sys::RunSignalHandlers()
(build-all-builtins/bin/opt+0x3e6725e)
#2 0x0000000003e6997c SignalHandler(int)
(build-all-builtins/bin/opt+0x3e6997c)
#3 0x00007efe32333890 __restore_rt
(/lib/x86_64-linux-gnu/libpthread.so.0+0x12890)
#4 0x000000000303e185 llvm::IVUsersWrapperPass::releaseMemory()
(build-all-builtins/bin/opt+0x303e185)
#5 0x0000000003709b4f llvm::PMDataManager::freePass(llvm::Pass*,
llvm::StringRef, llvm::PassDebuggingString)
(build-all-builtins/bin/opt+0x3709b4f)
#6 0x00000000030be57d llvm::LPPassManager::runOnFunction(llvm::Function&)
(build-all-builtins/bin/opt+0x30be57d)
#7 0x000000000370c683 llvm::FPPassManager::runOnFunction(llvm::Function&)
(build-all-builtins/bin/opt+0x370c683)
#8 0x000000000370c968 llvm::FPPassManager::runOnModule(llvm::Module&)
(build-all-builtins/bin/opt+0x370c968)
#9 0x000000000370cfcd llvm::legacy::PassManagerImpl::run(llvm::Module&)
(build-all-builtins/bin/opt+0x370cfcd)
#10 0x000000000207cdaa main (build-all-builtins/bin/opt+0x207cdaa)
#11 0x00007efe30dbfb97 __libc_start_main
/build/glibc-OTsEL5/glibc-2.27/csu/../csu/libc-start.c:344:0
#12 0x000000000206502a _start (build-all-builtins/bin/opt+0x206502a)
Segmentation fault (core dumped)
-debug-pass=Executions gives
[2019-12-05 09:54:16.848083739] 0x51f7480 Executing Pass 'Function Pass
Manager' on Module 'bbi-36444.ll'...
[2019-12-05 09:54:16.848188364] 0x51fc2e0 Executing Pass 'Dominator Tree
Construction' on Function 'test'...
[2019-12-05 09:54:16.848226289] 0x51fc2e0 Executing Pass 'Natural Loop
Information' on Function 'test'...
[2019-12-05 09:54:16.848261630] 0x51fc2e0 Executing Pass 'Canonicalize
natural loops' on Function 'test'...
[2019-12-05 09:54:16.848300952] 0x51fc2e0 Made Modification 'Canonicalize
natural loops' on Function 'test'...
[2019-12-05 09:54:16.848325816] 0x51fc2e0 Executing Pass 'LCSSA Verifier'
on Function 'test'...
[2019-12-05 09:54:16.848348655] 0x51fc2e0 Executing Pass 'Loop-Closed SSA
Form Pass' on Function 'test'...
[2019-12-05 09:54:16.848382808] 0x51fc2e0 Executing Pass 'Basic Alias
Analysis (stateless AA impl)' on Function 'test'...
[2019-12-05 09:54:16.848411025] 0x51fc2e0 Executing Pass 'Function Alias
Analysis Results' on Function 'test'...
[2019-12-05 09:54:16.848436098] 0x51fc2e0 Executing Pass 'Scalar Evolution
Analysis' on Function 'test'...
[2019-12-05 09:54:16.848475001] 0x51fc2e0 Executing Pass 'Loop Pass
Manager' on Function 'test'...
[2019-12-05 09:54:16.848507828] 0x51fd370 Executing Pass 'Unroll loops'
on Loop 'do.body'...
[2019-12-05 09:54:16.848693960] 0x51fd370 Made Modification 'Unroll
loops' on Loop '<deleted loop>'...
[2019-12-05 09:54:16.848724062] 0x51fd370 Freeing Pass 'Unroll loops' on
Loop '<deleted>'...
[2019-12-05 09:54:16.848745015] 0x51fd370 Freeing Pass 'Unroll loops' on
Loop '<deleted>'...
[2019-12-05 09:54:16.848763733] 0x51fd370 Freeing Pass 'Induction
Variable Users' on Loop '<deleted>'...
Old passmanager problem perhaps?</pre>
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