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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Regression(278661:278653): casting assertion in InstCombine on SSE2 QCMS code"
href="https://llvm.org/bugs/show_bug.cgi?id=28983">28983</a>
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<th>Summary</th>
<td>Regression(278661:278653): casting assertion in InstCombine on SSE2 QCMS code
</td>
</tr>
<tr>
<th>Product</th>
<td>libraries
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
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<th>OS</th>
<td>Windows NT
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>Scalar Optimizations
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>rnk@google.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Appears here in Chromium:
<a href="https://build.chromium.org/p/chromium.fyi/builders/ClangToTLinux/builds/6037/steps/compile/logs/stdio">https://build.chromium.org/p/chromium.fyi/builders/ClangToTLinux/builds/6037/steps/compile/logs/stdio</a>
LLVM changes inside the blamelist:
$ git log --format=oneline
24088baa9daf1df2482084741d28729d2278c385..47a3de7f4db76bd34b6a9b1202841d4b85294ca5
47a3de7f4db76bd34b6a9b1202841d4b85294ca5 MachineLoop: add methods
findLoopControlBlock and findLoopPreheader
7bc6001b578c682790e28bd8031d9f3641f10603 [SimplifyCFG] Rewrite
SinkThenElseCodeToEnd
91c19fbe6c94facc80531437d32f8015c16c3752 [Thumb] Validate branch target for
CBZ/CBNZ instructions.
bd7c3fb3bf8a73e669d80ab5c30d53e7de573a2e [LSR] Don't try and create post-inc
expressions on non-rotated loops
I suspect the SimplifyCFG and LSR changes, since the other changes are in
CodeGen, not IR.</pre>
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