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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [X86] Cannot select intrinsic FNMADD"
href="https://bugs.llvm.org/show_bug.cgi?id=35932">35932</a>
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<th>Summary</th>
<td>[X86] Cannot select intrinsic FNMADD
</td>
</tr>
<tr>
<th>Product</th>
<td>new-bugs
</td>
</tr>
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<th>Version</th>
<td>trunk
</td>
</tr>
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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>
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<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>new bugs
</td>
</tr>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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</tr>
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<th>Reporter</th>
<td>eric.schweitz@pgroup.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=19668" name="attach_19668" title="Intrinsic select problem">attachment 19668</a> <a href="attachment.cgi?id=19668&action=edit" title="Intrinsic select problem">[details]</a></span>
Intrinsic select problem
This example is reduced from a much larger code and demonstrates the cannot
select issue. The original code has a 655 calls to llvm.x86.fma.vfmadd
intrinsics, and this one triggers the LLVM ERROR.
% llc bug.bc -o bug.o
LLVM ERROR: Cannot select: t34: v2f64 = X86ISD::FNMADDS1 undef:v2f64,
undef:v2f64, t35
t2: v2f64 = undef
t2: v2f64 = undef
t35: v2f64 = scalar_to_vector t38
t38: f64,ch = load<LD8[ConstantPool]> t0, t40, undef:i64
t40: i64 = X86ISD::Wrapper TargetConstantPool:i64<double 1.000000e+00> 0
t39: i64 = TargetConstantPool<double 1.000000e+00> 0
t37: i64 = undef
In function: bughere_</pre>
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