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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - clang -fsanitize=address is extremely slow on unittests/Support/ConvertUTFTest.cpp"
href="http://llvm.org/bugs/show_bug.cgi?id=20842">20842</a>
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<th>Summary</th>
<td>clang -fsanitize=address is extremely slow on unittests/Support/ConvertUTFTest.cpp
</td>
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<th>Product</th>
<td>clang
</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
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>C++
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>vonosmas@gmail.com
</td>
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<th>CC</th>
<td>dgregor@apple.com, kcc@google.com, llvmbugs@cs.uiuc.edu
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<th>Classification</th>
<td>Unclassified
</td>
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<p>
<div>
<pre>ASan bootstrap on the buildbot is currently broken because the compilation of
unittests/Support/ConvertUTFTest.cpp times out.
The guilty pass is MachineSinking::runOnMachineFunction()
The source file in question has 1500-line function with hundreds of EXPECT_TRUE
statements. I haven't yet figured out what change slowed things down that
significantly.
To reproduce, build LLVM with clang as a host compiler and
-DCMAKE_BUILD_TYPE=Release -DLLVM_USE_SANITIZER=Address and run "make
check-llvm"
(or just use preprocessed .cpp and .sh file attached).</pre>
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