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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [PPC64] Wrong register generated for inline assembler"
href="http://llvm.org/bugs/show_bug.cgi?id=21443">21443</a>
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<th>Summary</th>
<td>[PPC64] Wrong register generated for inline assembler
</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>All
</td>
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<th>OS</th>
<td>Linux
</td>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>Backend: PowerPC
</td>
</tr>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>kai@redstar.de
</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>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=13270" name="attach_13270" title=".ll file demonstrating the bug">attachment 13270</a> <a href="attachment.cgi?id=13270&action=edit" title=".ll file demonstrating the bug">[details]</a></span>
.ll file demonstrating the bug
The attached file ppc_inline.ll works fine if compiled with -O0 but not with a
higher optimization level. Root cause is that a std 23, 0(0) is generated which
causes a segmentation fault.
The original source is part of the D runtime library, see here:
<a href="https://github.com/ldc-developers/druntime/blob/ldc/src/core/thread.d#L2148">https://github.com/ldc-developers/druntime/blob/ldc/src/core/thread.d#L2148</a>
The purpose of the code is to store all nonvolatile GPRs on the stack to enable
the garbage collector to scan the register values.</pre>
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</p>
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