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<body><table border="1" cellspacing="0" cellpadding="8">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - PowerPC: 'Z' inline assembly constraint not supported"
href="https://bugs.llvm.org/show_bug.cgi?id=50608">50608</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>PowerPC: 'Z' inline assembly constraint not supported
</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>
<tr>
<th>OS</th>
<td>Linux
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>enhancement
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>Backend: PowerPC
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>tstellar@redhat.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org, nemanja.i.ibm@gmail.com
</td>
</tr></table>
<p>
<div>
<pre>cat test.c
void func(int myarg)
{
asm volatile(" .asciz \"%n[S1]@%I[A1]%[A1]\" " :: [S1] "n" (1), [A1] "nZr"
((myarg)));
}
int main(int argc, char **argv)
{
func(0);
return 0;
}
./bin/clang --target=ppc64le test.c
test.c:10:18: error: invalid operand in inline asm: ' .asciz "${0:n}@${1:I}$1"
'
If I remove the 'Z constraint the test case compiles successfully. This
constraint is supported by gcc:
<a href="https://gcc.gnu.org/onlinedocs/gcc/Machine-Constraints.html">https://gcc.gnu.org/onlinedocs/gcc/Machine-Constraints.html</a></pre>
</div>
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