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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - __builtin_unpredictable is horridly broken--"
href="https://bugs.llvm.org/show_bug.cgi?id=40031">40031</a>
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<th>Summary</th>
<td>__builtin_unpredictable is horridly broken--
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<th>Product</th>
<td>clang
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<th>Version</th>
<td>7.0
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<th>Hardware</th>
<td>PC
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<th>OS</th>
<td>Linux
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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>erich.keane@intel.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>Mostly a note for the future, though others are welcome to take this.
__builtin_unpredictable doesn't work for while/dowhile/for because the place it
dealt with isn't called from them. The function to Emit a Bool Branch should
be used by the other 3 as well.
Additionally, __builtin_unpredictable is implemented IN an emit function,
rather than in its CodeGenFunction emit call. Likely, it should be changed to
also use the above emit function, then tag the branch after the fact (or bubble
it downward to the branch create spot).</pre>
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