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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Integrated-as fails to assemble these (presumably legitimate) instructions"
href="http://llvm.org/bugs/show_bug.cgi?id=18921">18921</a>
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<th>Summary</th>
<td>Integrated-as fails to assemble these (presumably legitimate) instructions
</td>
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<th>Product</th>
<td>libraries
</td>
</tr>
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<th>Version</th>
<td>trunk
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Linux
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>Backend: ARM
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>simon.hosie@arm.com
</td>
</tr>
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<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=12096" name="attach_12096" title="instructions emitted by gcc">attachment 12096</a> <a href="attachment.cgi?id=12096&action=edit" title="instructions emitted by gcc">[details]</a></span>
instructions emitted by gcc
I've swept together a bunch of instructions which GCC emitted but which Clang's
integrated-as rejects (GNU assembler does not). Most of them it says need ARM
mode, but there are a couple of invalid operands which I assume are "oversized"
immediates.
This is in Thumb mode. Perhaps these are being filtered against the original
Thumb mode, rather than Thumb2?
I suspect that gcc could be performing some instruction substitutions which
aren't officially part of the language.
I haven't pared the list down because I'm afraid I might remove something
important, like a specific register number.</pre>
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