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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 --- - Atomicrmw min i16 produces wrong result on PowerPC"
href="https://llvm.org/bugs/show_bug.cgi?id=30451">30451</a>
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<th>Summary</th>
<td>Atomicrmw min i16 produces wrong result on PowerPC
</td>
</tr>
<tr>
<th>Product</th>
<td>new-bugs
</td>
</tr>
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<th>Version</th>
<td>unspecified
</td>
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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>
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<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>new bugs
</td>
</tr>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>v.churavy@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>The code below returns -1 on x86_64 and 0 on PowerPC
define i16 @julia_hh_65132() #0 !dbg !5 {
top:
%0 = alloca i16, align 2
%1 = bitcast i16* %0 to i8*
call void @llvm.lifetime.start(i64 2, i8* %1)
store i16 -1, i16* %0, align 2
%2 = atomicrmw min i16* %0, i16 0 acq_rel
%3 = load atomic i16, i16* %0 acquire, align 8
call void @llvm.lifetime.end(i64 2, i8* %1)
ret i16 %3
}</pre>
</div>
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