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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 --- - LLVM ERROR: Cannot select: t30: i32 = AArch64ISD::FCCMP"
href="https://llvm.org/bugs/show_bug.cgi?id=26803">26803</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>LLVM ERROR: Cannot select: t30: i32 = AArch64ISD::FCCMP
</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: AArch64
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>kai@redstar.de
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=15969" name="attach_15969" title="IR file demonstrating the bug">attachment 15969</a> <a href="attachment.cgi?id=15969&action=edit" title="IR file demonstrating the bug">[details]</a></span>
IR file demonstrating the bug
The attached bugpoint-reduced test case produces the error message if run with
llc -O3:
LLVM ERROR: Cannot select: t30: i32 = AArch64ISD::FCCMP undef:f128, undef:f128,
Constant:i32<1>, Constant:i32<0>, t29
t9: f128 = undef
t9: f128 = undef
t27: i32 = Constant<1>
t28: i32 = Constant<0>
t29: f128 = AArch64ISD::FCMP undef:f128, t35
t9: f128 = undef
t35: f128,ch = load<LD16[ConstantPool]> t0, t39, undef:i64
t39: i64 = AArch64ISD::ADDlow t38, TargetConstantPool:i64<fp128
0xL00000000000000000000000000000000> 0 [TF=34]
t38: i64 = AArch64ISD::ADRP TargetConstantPool:i64<fp128
0xL00000000000000000000000000000000> 0 [TF=1]
t36: i64 = TargetConstantPool<fp128
0xL00000000000000000000000000000000> 0 [TF=1]
t37: i64 = TargetConstantPool<fp128
0xL00000000000000000000000000000000> 0 [TF=34]
t34: i64 = undef
In function: _D2rt4util8typeinfo15__T8FloatingTcZ6equalsFNaNbNfccZb
This occurs while compiling module rt.util.ti_Acreal with current LDC D
compiler on native AArch64 Linux.</pre>
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