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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Cannot compile OpenMP CUDA Offloading when using -fsave-optimization-record with Optimizations"
href="https://bugs.llvm.org/show_bug.cgi?id=48153">48153</a>
</td>
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<th>Summary</th>
<td>Cannot compile OpenMP CUDA Offloading when using -fsave-optimization-record with Optimizations
</td>
</tr>
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<th>Product</th>
<td>OpenMP
</td>
</tr>
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<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
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<th>OS</th>
<td>Linux
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>Clang Compiler Support
</td>
</tr>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>huberjn@ornl.gov
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>The Clang compiler currently passes a debugging build to ptxas when
-fsave-optimization-record is specified. This causes ptxas to fail when
optimizations are enabled as well. This same behavior doesn't happen when using
'-g' or '-Rpass=<pass>' which also enable debugging information. This makes it
impossible to get an optimization report for most optimizations since they
require optimizations. I tested this using a new build of clang from master.
test.c:
int main() {
return 0;
}
$> clang -O3 -fsave-optimization-record -fopenmp -fopenmp-targets=nvptx64
test.c
ptxas fatal : Optimized debugging not supported
clang-12: error: ptxas command failed with exit code 255 (use -v to see
invocation)
clang version 12.0.0
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /home2/3n4/clang/bin
clang-12: note: diagnostic msg: Error generating preprocessed source(s).</pre>
</div>
</p>
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