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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - ARM FastISel is disabled for MCJIT"
href="http://llvm.org/bugs/show_bug.cgi?id=16323">16323</a>
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<th>Summary</th>
<td>ARM FastISel is disabled for MCJIT
</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>
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<th>OS</th>
<td>All
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<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>jfb@google.com
</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>lib/ExecutionEngine/TargetSelect.cpp:EngineBuilder::selectTarget disables ARM
FastISel by changing OptLevel == CodeGenOpt::None to OptLevel ==
CodeGenOpt::Less.
The issue shows up when running an ARM self-hosted test-suite and running MCJIT
tests at O0, e.g.:
armv7-unknown-linux-gnueabihf-lli -use-mcjit -O0
-disable-lazy-compilation=false ../llvm/test/ExecutionEngine/MCJIT/pr13727.ll
The generated code is wrong and causes a crash.</pre>
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