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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Using __builtin_ia32_pshufb128 causes "fatal error: error in backend: Cannot select: 0x3e5d580: v16i8 = X86ISD::PSHUFB""
href="http://llvm.org/bugs/show_bug.cgi?id=22301">22301</a>
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<th>Summary</th>
<td>Using __builtin_ia32_pshufb128 causes "fatal error: error in backend: Cannot select: 0x3e5d580: v16i8 = X86ISD::PSHUFB"
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
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<th>Version</th>
<td>trunk
</td>
</tr>
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<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>
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<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>-New Bugs
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>rtrieu@google.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
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<pre>Using __builtin_ia32_pshufb128 causes fatal error in backend:
$ cat l.cpp
typedef long long LL __attribute__((__vector_size__(16)));
void foo() {
LL a, b, c;
c = __builtin_ia32_pshufb128(a, b);
}
$ clang -cc1 -emit-obj l.cpp
fatal error: error in backend: Cannot select: 0x479bba0: v16i8 = X86ISD::PSHUFB
0x479bed0, 0x479bdc0 [ORD=9] [ID=10]
0x479bed0: v16i8 = bitcast 0x479e420 [ORD=6] [ID=8]
0x479e420: v2i64,ch = load 0x4782b10, 0x479ba90, 0x479bcb0<LD16[%a]>
[ORD=6] [ID=6]
0x479ba90: i64 = FrameIndex<0> [ID=1]
0x479bcb0: i64 = undef [ID=2]
0x479bdc0: v16i8 = bitcast 0x479c420 [ORD=8] [ID=9]
0x479c420: v2i64,ch = load 0x4782b10, 0x479bfe0, 0x479bcb0<LD16[%b]>
[ORD=8] [ID=7]
0x479bfe0: i64 = FrameIndex<1> [ID=3]
0x479bcb0: i64 = undef [ID=2]
In function: _Z3foov</pre>
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