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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - "llvm-profdata merge" doesn't work in 13.0"
href="https://bugs.llvm.org/show_bug.cgi?id=51624">51624</a>
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<th>Summary</th>
<td>"llvm-profdata merge" doesn't work in 13.0
</td>
</tr>
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<th>Product</th>
<td>new-bugs
</td>
</tr>
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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
</td>
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<th>Severity</th>
<td>enhancement
</td>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>new bugs
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>bero@lindev.ch
</td>
</tr>
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<th>CC</th>
<td>htmldeveloper@gmail.com, llvm-bugs@lists.llvm.org
</td>
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<p>
<div>
<pre>Doing something along the lines of
export LLVM_PROFILE_FILE=xyz-%p.profile.d
export CFLAGS="-O2 -fprofile-instr-generate"
export CXXFLAGS="-O2 -fprofile-instr-generate"
./configure
make
# Run the generated binaries in some expected ways, e.g. "make check"
llvm-profdata merge --output=xyz.profile xyz-*.profile.d
consistently (obviously with PIDs varying) results in
warning: xyz-670250.profile.d: malformed instrumentation profile data
warning: xyz-670257.profile.d: malformed instrumentation profile data
error: no profile can be merged
The *.profile.d files look ok at a first glance, and "file" recognizes them as
"LLVM raw profile data, version 7".
Looks like only "llvm-profdata merge" is broken, using -fprofile-instr-use=<any
of the individual files> seems to be ok.
This is a regression from 12.x.</pre>
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