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<base href="https://llvm.org/bugs/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - PowerPC64: fatal error with -mcpu=power9"
href="https://llvm.org/bugs/show_bug.cgi?id=31191">31191</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>PowerPC64: fatal error with -mcpu=power9
</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>
<tr>
<th>OS</th>
<td>Linux
</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>
<tr>
<th>Component</th>
<td>Backend: PowerPC
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>anton@samba.org
</td>
</tr>
<tr>
<th>CC</th>
<td>amehsan@ca.ibm.com, hfinkel@anl.gov, kbarton@ca.ibm.com, llvm-bugs@lists.llvm.org, nemanja.i.ibm@gmail.com
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>The following test case:
int a, b, c;
void d(void)
{
b = 8;
for (; b <= 27; ++b) {
char *e = (char *)&a;
c &= ++*e;
}
}
when built with:
clang -Wall -Os -mcpu=power9 -c testcase.c
fails with:
fatal error: error in backend: Cannot select: 0x10018a9cfa0: v16i8 =
BUILD_VECTOR Constant:i32<1>, Constant:i32<2>, Constant:i32<3>,
Constant:i32<4>, undef:i32, undef:i32, undef:i32, undef:i32, undef:i32,
undef:i32, undef:i32, undef:i32, undef:i32, undef:i32, undef:i32,
undef:i32
0x10018a9c718: i32 = Constant<1>
0x10018a9ce00: i32 = Constant<2>
0x10018a9c9f0: i32 = Constant<3>
0x10018a9d0d8: i32 = Constant<4>
0x10018a9d140: i32 = undef
0x10018a9d140: i32 = undef
0x10018a9d140: i32 = undef
0x10018a9d140: i32 = undef
0x10018a9d140: i32 = undef
0x10018a9d140: i32 = undef
0x10018a9d140: i32 = undef
0x10018a9d140: i32 = undef
0x10018a9d140: i32 = undef
0x10018a9d140: i32 = undef
0x10018a9d140: i32 = undef
0x10018a9d140: i32 = undef
In function: d
clang-3.9: error: clang frontend command failed with exit code 70 (use -v to
see invocation)
clang version 4.0.0 (git://github.com/llvm-mirror/clang.git
b3eb023bef514b684fcb374ae674c251e48514fd)
(<a href="https://github.com/llvm-mirror/llvm.git">https://github.com/llvm-mirror/llvm.git</a>
9fdd2a607c03e086c571c54018ab87a4d40798e5)
Target: powerpc64le-unknown-linux-gnu
Thread model: posix
InstalledDir: /home/anton/llvm.install/bin
clang-3.9: note: diagnostic msg: PLEASE submit a bug report to
<a href="http://llvm.org/bugs/">http://llvm.org/bugs/</a> and include the crash backtrace, preprocessed source, and
associated run script.
clang-3.9: note: diagnostic msg:
********************
PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
clang-3.9: note: diagnostic msg: /tmp/testcase-ca18a3.c
clang-3.9: note: diagnostic msg: /tmp/testcase-ca18a3.sh
clang-3.9: note: diagnostic msg:
********************</pre>
</div>
</p>
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