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<base href="https://llvm.org/bugs/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - clang integrated-as rejects ldc2/stc2 while targeting 32-bit mode ARMv8"
href="https://llvm.org/bugs/show_bug.cgi?id=29149">29149</a>
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<th>Summary</th>
<td>clang integrated-as rejects ldc2/stc2 while targeting 32-bit mode ARMv8
</td>
</tr>
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<th>Product</th>
<td>clang
</td>
</tr>
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<th>Version</th>
<td>trunk
</td>
</tr>
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<th>Hardware</th>
<td>PC
</td>
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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>
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<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>-New Bugs
</td>
</tr>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>bero@linaro.org
</td>
</tr>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>[bero@box1 ~]$ cat test.S
ldc2 p1, cr8, [r0], #4
stc2 p1, cr8, [r0], #4
[bero@box1 ~]$ clang -target arm-linux-androideabi -mcpu=cortex-a15 -o test.o
-c test.S
[bero@box1 ~]$ clang -target arm-linux-androideabi -mcpu=cortex-a53 -o test.o
-c test.S
test.S:1:7: error: invalid operand for instruction
ldc2 p1, cr8, [r0], #4
^
test.S:2:7: error: invalid operand for instruction
stc2 p1, cr8, [r0], #4
^
It's true that ldc2 and stc2 have been removed from the ARMv8 instruction set,
but AFAICT this shouldn't affect 32bit compat mode on an A53 (which should be a
superset of A15)</pre>
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