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<base href="https://llvm.org/bugs/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Assembly parser breaks on certain comments"
href="https://llvm.org/bugs/show_bug.cgi?id=28921">28921</a>
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<tr>
<th>Summary</th>
<td>Assembly parser breaks on certain comments
</td>
</tr>
<tr>
<th>Product</th>
<td>new-bugs
</td>
</tr>
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<th>Version</th>
<td>3.9
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
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<th>OS</th>
<td>Linux
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>new bugs
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>tim.besard@elis.ugent.be
</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>
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<div>
<pre>As of the assembly parser refactor in r27300 (D20009), clang doesn't parse the
following assembly file anymore:
##
#ifndef TRMMKERNEL
vaddpd 4, %xmm9, %xmm9;
vaddpd 6, %xmm8, %xmm8;
vaddpd 0, %xmm15, %xmm15;
vaddpd 2, %xmm14, %xmm14;
vaddpd 4, %xmm13, %xmm13;
vaddpd 6, %xmm12, %xmm12;
#endif
##
Bisected on the llvm-project repository, release build using CMake 3.6.1 +
Ninja on Debian Jessie if that would matter.
$ clang --version
clang version 3.8.1 (tags/RELEASE_381/final)
Target: x86_64-unknown-linux-gnu
Thread model: posix
$ clang -DTRMMKERNEL -c kernel.S
$ echo $?
0
$ clang-3.9 --version
clang version 3.9.0
Target: x86_64-unknown-linux-gnu
Thread model: posix
$ clang-3.9 -DTRMMKERNEL -c kernel.S
kernel.S:1:1: error: unexpected token at start of statement
##
^
This is a test case reduced from a failure to compile OpenBLAS, as reported
here: <a href="https://github.com/xianyi/OpenBLAS/issues/942">https://github.com/xianyi/OpenBLAS/issues/942</a>
Using `-no-integrated-as` obviously bypasses the problem.
Some other occurrences of this bug, eg.
<a href="http://forum.xda-developers.com/showpost.php?p=67696651&postcount=170">http://forum.xda-developers.com/showpost.php?p=67696651&postcount=170</a></pre>
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</p>
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