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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Cortex M0 supports WFE but LLC does not allow it"
href="http://llvm.org/bugs/show_bug.cgi?id=16350">16350</a>
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<th>Summary</th>
<td>Cortex M0 supports WFE but LLC does not allow it
</td>
</tr>
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<th>Product</th>
<td>tools
</td>
</tr>
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<th>Version</th>
<td>3.2
</td>
</tr>
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<th>Hardware</th>
<td>PC
</td>
</tr>
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<th>OS</th>
<td>Windows NT
</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>llc
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>xocotl@gmail.com
</td>
</tr>
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<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
</td>
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<th>Classification</th>
<td>Unclassified
</td>
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<p>
<div>
<pre>Hello,
When trying to compile, I get the following error:
...\bin\MinSizeRel>llc C:\...\tmp-49f01283-2ef0-45f5-9da2-
19446f5b511d.tmp -mtriple=thumbv6m-none-eabi -filetype=obj -mcpu=cortex-m0
-o=test.elf
<inline asm>:1:2: error: instruction requires: thumb2
wfe
^
However, if I switch to Thumb 2 (thumbv7m-none-eabi), it uses CBNZ, which
Cortex M0 does not have. Cortex M0 is mostly Thumb but with a tiny bit of Thumb
2, and I think WFE is among that missing.
Have a good day
James</pre>
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