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<base href="https://bugs.llvm.org/">
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<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [debugify] simplifycfg fail (2)"
href="https://bugs.llvm.org/show_bug.cgi?id=38023">38023</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>[debugify] simplifycfg fail (2)
</td>
</tr>
<tr>
<th>Product</th>
<td>new-bugs
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>Windows NT
</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>greg.bedwell@sony.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr>
<tr>
<th>Blocks</th>
<td>37953
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=20508" name="attach_20508" title="ll reproducer">attachment 20508</a> <a href="attachment.cgi?id=20508&action=edit" title="ll reproducer">[details]</a></span>
ll reproducer
$ clang -v
clang version 7.0.0 (trunk 336047) (llvm/trunk 336095)
Target: x86_64-pc-windows-msvc
Thread model: posix
InstalledDir: e:\work\upstream-llvm\build-vs2015-native-ninja\bin
$ cat Simplify_the_CFG.cpp
void foo();
void bar(int aa) {
for (int bb = 0; bb < 7; bb++)
if (aa)
foo();
}
$ clang Simplify_the_CFG.cpp -S -o - -emit-llvm -O0 -Xclang -disable-O0-optnone
-w -march=native | opt -loop-rotate -gvn -loop-unroll -gvn -S -o
Simplify_the_CFG.ll
$ opt Simplify_the_CFG.ll -disable-output -debugify-each -simplifycfg
ERROR: Instruction with empty DebugLoc in function ?bar@@YAXH@Z -- br label
%if.end.1
ERROR: Instruction with empty DebugLoc in function ?bar@@YAXH@Z -- br label
%if.end.3
ERROR: Instruction with empty DebugLoc in function ?bar@@YAXH@Z -- br label
%if.end.5
WARNING: Missing line 5
WARNING: Missing line 6
WARNING: Missing line 10
WARNING: Missing line 12
WARNING: Missing line 19
WARNING: Missing line 21
WARNING: Missing line 27
WARNING: Missing line 29
WARNING: Missing line 37
CheckFunctionDebugify [Simplify the CFG]: FAIL
CheckFunctionDebugify [Module Verifier]: PASS</pre>
</div>
</p>
<div id="referenced">
<hr style="border: 1px dashed #969696">
<b>Referenced Bugs:</b>
<ul>
<li>
[<a class="bz_bug_link
bz_status_NEW "
title="NEW - [meta] [debugify] fix -check-debugify failures"
href="https://bugs.llvm.org/show_bug.cgi?id=37953">Bug 37953</a>] [meta] [debugify] fix -check-debugify failures
</li>
</ul>
</div>
<br>
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