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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Greedy Register Allocator fails"
href="http://llvm.org/bugs/show_bug.cgi?id=16140">16140</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Greedy Register Allocator fails
</td>
</tr>
<tr>
<th>Product</th>
<td>tools
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
<tr>
<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>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>opt
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>fwinter@jlab.org
</td>
</tr>
<tr>
<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=10579" name="attach_10579" title="Repro">attachment 10579</a> <a href="attachment.cgi?id=10579&action=edit" title="Repro">[details]</a></span>
Repro
I encounter problems when generating code with the nvptx backend. The codegen
process fails with
Target didn't implement TargetInstrInfo::storeRegToStackSlot!
UNREACHABLE executed at
/u/home/fwinter/git/llvm/include/llvm/Target/TargetInstrInfo.h:482!
Stack dump:
0. Running pass 'Function Pass Manager' on module 'module'.
1. Running pass 'Greedy Register Allocator' on function '@main'
Abort (core dumped)
I attach the kernel which provokes this. I know it's large, but it's correct.
In a separate experiment I outlined frequently occuring operations into a
function, making the kernel a little smaller. It didn't help. I get the same
failure.</pre>
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