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<base href="https://bugs.llvm.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Instruction selection fails for @llvm.experimental.constrained.fcmps.f32"
href="https://bugs.llvm.org/show_bug.cgi?id=44731">44731</a>
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<th>Summary</th>
<td>Instruction selection fails for @llvm.experimental.constrained.fcmps.f32
</td>
</tr>
<tr>
<th>Product</th>
<td>libraries
</td>
</tr>
<tr>
<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>
</tr>
<tr>
<th>Severity</th>
<td>enhancement
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>Backend: ARM
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>jjaoudi@waymo.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org, peter.smith@linaro.org, Ties.Stuij@arm.com
</td>
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<p>
<div>
<pre>Source:
```c++
void Foo(float a) {
if (0.f < a) return;
}
```
MIR:
```text
target datalayout = "E-m:e-p:32:32-Fi8-i64:64-v128:64:128-a:0:32-n32-S64"
target triple = "thumbebv7r-none-unknown-eabihf"
; Function Attrs: nounwind
define dso_local void @_Z3Foof(float %0) local_unnamed_addr #0 !dbg !8 {
%2 = tail call i1 @llvm.experimental.constrained.fcmps.f32(float
0.000000e+00, float %0, metadata !"olt", metadata !"fpexcept.strict") #3, !dbg
!10
ret void, !dbg !11
}
```
Results in a segmentation fault during the "ARM Instruction Selection" pass.</pre>
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