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<body><span class="vcard"><a class="email" href="mailto:lebedev.ri@gmail.com" title="Roman Lebedev <lebedev.ri@gmail.com>"> <span class="fn">Roman Lebedev</span></a>
</span> changed
<a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - Loop idiom recognizer miscompiles a memcmp loop"
href="https://bugs.llvm.org/show_bug.cgi?id=43206">bug 43206</a>
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<table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>What</th>
<th>Removed</th>
<th>Added</th>
</tr>
<tr>
<td style="text-align:right;">Fixed By Commit(s)</td>
<td>r370788
</td>
<td>r370788, r374662
</td>
</tr>
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<td style="text-align:right;">Status</td>
<td>NEW
</td>
<td>RESOLVED
</td>
</tr>
<tr>
<td style="text-align:right;">Resolution</td>
<td>---
</td>
<td>FIXED
</td>
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<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - Loop idiom recognizer miscompiles a memcmp loop"
href="https://bugs.llvm.org/show_bug.cgi?id=43206#c6">Comment # 6</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - Loop idiom recognizer miscompiles a memcmp loop"
href="https://bugs.llvm.org/show_bug.cgi?id=43206">bug 43206</a>
from <span class="vcard"><a class="email" href="mailto:lebedev.ri@gmail.com" title="Roman Lebedev <lebedev.ri@gmail.com>"> <span class="fn">Roman Lebedev</span></a>
</span></b>
<pre>The problem was that i forgot to ensure that both loads had the same loop base
as the one we were analysing.
Recommitted in r374662.
(In reply to Roman Lebedev from <a href="show_bug.cgi?id=43206#c5">comment #5</a>)
<span class="quote">> (In reply to Nick Desaulniers from <a href="show_bug.cgi?id=43206#c4">comment #4</a>)
> > Seems like the commit that was reverted was breaking ppc linux kernel
> > builds: <a href="https://github.com/ClangBuiltLinux/linux/issues/647">https://github.com/ClangBuiltLinux/linux/issues/647</a>.
>
> It may be best to retroactively fix that instead of waiting until after it
> breaks next time.</span >
No reaction from Nick in a month, so i guess they weren't interested in
proactive fix. Now that it is recommitted, i guess they are broken again.</pre>
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