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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - The scalarizer pass remove debugloc from call instruction"
href="https://llvm.org/bugs/show_bug.cgi?id=27938">27938</a>
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<th>Summary</th>
<td>The scalarizer pass remove debugloc from call instruction
</td>
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<th>Product</th>
<td>libraries
</td>
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<th>Version</th>
<td>trunk
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Linux
</td>
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>Scalar Optimizations
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>karl-johan.karlsson@ericsson.com
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
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<th>Classification</th>
<td>Unclassified
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<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=16437" name="attach_16437" title="Reproducer: opt -S -scalarizer -o - foo.ll">attachment 16437</a> <a href="attachment.cgi?id=16437&action=edit" title="Reproducer: opt -S -scalarizer -o - foo.ll">[details]</a></span>
Reproducer: opt -S -scalarizer -o - foo.ll
The scalarizer pass (-scalarizer) remove the debugloc from a call instruction.
The verifier pass later give the error message:
inlinable function call in a function with debug info must have a !dbg location
%_tmp7 = tail call i16 @f1()
LLVM ERROR: Broken function found, compilation aborted!
The problem seems to be in the method Scalarizer::transferMetadata() that
always transfer the debugloc regardless of if the debugloc that is being
transfered is set or not. I'm also a bit unsure if it is a good idea to
overwrite the debugloc of an instruction that already got a perfectly fine
debugloc, why is it guaranteed that the new one is better?
Reproducer:
opt -S -scalarizer -o - foo.ll</pre>
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