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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Some -Rpass-analysis=loop-vectorize diagnostics need rewording to include "loop not vectorized" prefix"
href="https://llvm.org/bugs/show_bug.cgi?id=28477">28477</a>
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<th>Summary</th>
<td>Some -Rpass-analysis=loop-vectorize diagnostics need rewording to include "loop not vectorized" prefix
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<th>Product</th>
<td>new-bugs
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<th>Version</th>
<td>trunk
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<th>Hardware</th>
<td>Macintosh
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<th>OS</th>
<td>MacOS X
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>normal
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>new bugs
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>sean@rogue-research.com
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
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<th>Classification</th>
<td>Unclassified
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<p>
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<pre>Usually clang will output something pretty clear like:
"remark: loop not vectorized: loop control flow is not understood by vectorizer
[-Rpass-analysis=loop-vectorize]"
Other times I'll see:
"remark: the cost-model indicates that interleaving is not beneficial
[-Rpass-analysis=loop-vectorize]"
Adam Nemet confirmed to me on cfe-dev that it's indeed meaning to say that the
loop was *not* vectorized. This would be much clearer if the text included
"loop not vectorized" like the other messages.</pre>
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