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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Sanitizer + -O3 stalls in LLVM backend"
href="https://bugs.llvm.org/show_bug.cgi?id=42889">42889</a>
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<th>Summary</th>
<td>Sanitizer + -O3 stalls in LLVM backend
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>8.0
</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
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<th>Component</th>
<td>LLVM Codegen
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>dominik.strasser@onespin.com
</td>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org, neeilans@live.com, richard-llvm@metafoo.co.uk
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<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=22339" name="attach_22339" title="Source code stalling the compiler">attachment 22339</a> <a href="attachment.cgi?id=22339&action=edit" title="Source code stalling the compiler">[details]</a></span>
Source code stalling the compiler
compiling the attached source (admittedly large, it is a bison output) runs for
hours in the backend.
Looking at the clang backtrace suggests that
llvm::RegAllocBase::allocatePhysRegs
could be the problematic code area.</pre>
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