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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] jump-threading fail"
href="https://bugs.llvm.org/show_bug.cgi?id=37966">37966</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>[debugify] jump-threading fail
</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=20483" name="attach_20483" title="ll reproducer">attachment 20483</a> <a href="attachment.cgi?id=20483&action=edit" title="ll reproducer">[details]</a></span>
ll reproducer
$ clang -v
clang version 7.0.0 (trunk 335708) (llvm/trunk 335721)
Target: x86_64-pc-windows-msvc
Thread model: posix
InstalledDir: e:\work\upstream-llvm\build-vs2015-native-ninja\bin
$ cat jump_threading.cpp
void foo(int);
void bar(int& aa, int& bb, int cc) {
int dd[3];
while (cc)
dd[cc] = 2;
while (aa < 5) {
if(*dd)
bb = 0;
foo(bb);
}
}
$ clang jump_threading.cpp -O0 -Xclang -disable-O0-optnone -emit-llvm -S -o - |
opt -O3 -opt-bisect-limit=39 -S -o jump_threading-input.ll 2>nul
$ opt -disable-output -debugify-each -jump-threading jump_threading-input.ll
ERROR: Instruction with empty DebugLoc in function ?bar@@YAXAEAH0H@Z -- br
label %while.body
WARNING: Missing line 7
WARNING: Missing line 8
WARNING: Missing line 16
WARNING: Missing line 18
WARNING: Missing line 19
WARNING: Missing line 20
WARNING: Missing line 26
WARNING: Missing line 28
WARNING: Missing line 29
WARNING: Missing line 31
WARNING: Missing line 37
WARNING: Missing line 38
CheckFunctionDebugify [Jump Threading]: 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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