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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Option to randomly shuffle instructions during compilation"
href="https://bugs.llvm.org/show_bug.cgi?id=44957">44957</a>
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<th>Summary</th>
<td>Option to randomly shuffle instructions during compilation
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<th>Product</th>
<td>clang
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<th>Version</th>
<td>unspecified
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<th>Hardware</th>
<td>All
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<th>OS</th>
<td>All
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>enhancement
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>C++
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>iuri.chaer@gmail.com
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<th>CC</th>
<td>blitzrakete@gmail.com, dgregor@apple.com, erik.pilkington@gmail.com, llvm-bugs@lists.llvm.org, richard-llvm@metafoo.co.uk
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<pre>I would like to fuzz my lock-free code to improve my confidence in its
correctness. For that, it would be truly awesome if the compiler offered an
option like:
-shuffle-instruction-order=<seed>
The idea is akin to fuzzing: instructions would be randomly shuffled in legal
ways during the optimization phase. The idea is to bruteforce hidden undefined
behavior out of lock-free code, it could help answer questions like "do I have
all the barriers I need?", and "are my transactions well-defined?".</pre>
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