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<base href="https://bugs.llvm.org/">
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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 - opt crashes with -loop-deletion pass"
href="https://bugs.llvm.org/show_bug.cgi?id=39645">39645</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>opt crashes with -loop-deletion pass
</td>
</tr>
<tr>
<th>Product</th>
<td>libraries
</td>
</tr>
<tr>
<th>Version</th>
<td>6.0
</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>Loop Optimizer
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>cszide@163.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=21115" name="attach_21115" title="reduced file produced by bugpoint">attachment 21115</a> <a href="attachment.cgi?id=21115&action=edit" title="reduced file produced by bugpoint">[details]</a></span>
reduced file produced by bugpoint
Running opt crashes with pass -loop-deletion on the attached .bc.
The test system is Ubuntu 18.04, x86_64. I have tested it using llvm 6.0 and
the latest llvm code from github.
The following is the output:
Load operand must be a pointer.
%44 = load i32, void LLVMSymbolizer: error reading file: No such file or
directory
#0 0x0000000001a68794 (opt+0x1a68794)
#1 0x0000000001a68a76 (opt+0x1a68a76)
#2 0x00007fdac5698890 __restore_rt
(/lib/x86_64-linux-gnu/libpthread.so.0+0x12890)
#3 0x0000000001542955 (opt+0x1542955)
#4 0x000000000154172f (opt+0x154172f)
#5 0x000000000153c4fc (opt+0x153c4fc)
#6 0x0000000001537c28 (opt+0x1537c28)
#7 0x000000000165c9cc (opt+0x165c9cc)
#8 0x000000000165130a (opt+0x165130a)
#9 0x00000000016403d8 (opt+0x16403d8)
#10 0x0000000001660b8d (opt+0x1660b8d)
#11 0x00000000016021eb (opt+0x16021eb)
#12 0x0000000001602453 (opt+0x1602453)
#13 0x0000000001602858 (opt+0x1602858)
#14 0x000000000075b292 (opt+0x75b292)
#15 0x00007fdac456bb97 __libc_start_main
(/lib/x86_64-linux-gnu/libc.so.6+0x21b97)
#16 0x000000000074c1b9 (opt+0x74c1b9)
Stack dump:
0. Program arguments: opt -loop-deletion bugpoint-reduced-simplified.bc
-disable-output
1. Running pass 'Function Pass Manager' on module
'bugpoint-reduced-simplified.bc'.
2. Running pass 'Module Verifier' on function '@put2bitbwtile'
Segmentation fault (core dumped)</pre>
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