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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - r358919 causing boot failures for MIPS Linux kernel"
href="https://bugs.llvm.org/show_bug.cgi?id=42763">42763</a>
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<th>Summary</th>
<td>r358919 causing boot failures for MIPS Linux kernel
</td>
</tr>
<tr>
<th>Product</th>
<td>libraries
</td>
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<th>Version</th>
<td>trunk
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Linux
</td>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>enhancement
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>Backend: MIPS
</td>
</tr>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>ndesaulniers@google.com
</td>
</tr>
<tr>
<th>CC</th>
<td>listmail@philipreames.com, llvm-bugs@lists.llvm.org, natechancellor@gmail.com, tstellar@redhat.com
</td>
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<th>Blocks</th>
<td>4068
</td>
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<p>
<div>
<pre>Reported via:
<a href="https://github.com/ClangBuiltLinux/linux/issues/610#issuecomment-515197978">https://github.com/ClangBuiltLinux/linux/issues/610#issuecomment-515197978</a>
It seems that with clang-8, we can boot a working MIPS linux kernel.
It fails to boot with clang-9, seemingly due to r358919 commit d748689c7f71
("[InstCombine] Eliminate stores to constant memory").
The particular optimization sounds like it may be potentially dangerous; maybe
the kernel is exercising such an unconsidered case?</pre>
</div>
</p>
<div id="referenced">
<hr style="border: 1px dashed #969696">
<b>Referenced Bugs:</b>
<ul>
<li>
[<a class="bz_bug_link
bz_status_CONFIRMED "
title="CONFIRMED - [Meta] Compiling the Linux kernel with clang"
href="https://bugs.llvm.org/show_bug.cgi?id=4068">Bug 4068</a>] [Meta] Compiling the Linux kernel with clang
</li>
</ul>
</div>
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