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<base href="https://llvm.org/bugs/" />
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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 --- - Inline assembly does not support macro"
href="https://llvm.org/bugs/show_bug.cgi?id=25495">25495</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Inline assembly does not support macro
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</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>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>-New Bugs
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>olivier@labapart.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>clang does not support assembly macro when defined with inline assembly. GCC
supports it and produce the expected binary.
This use case is actually present in newlib source code
(<a href="https://sourceware.org/newlib/">https://sourceware.org/newlib/</a>).
Source code:
-------- hello.c ----------------
asm(".macro COPY\n\t"
"mov r0, r1\n\t"
".endm"
);
int main(void) {
asm ("COPY\n");
return 0;
}
---------------------------------
Here is the error generated by clang:
$ clang-3.8 -target arm-none-eabi -c hello.c
hello.c:7:8: error: invalid instruction mnemonic 'copy'
asm ("COPY\n");
^
<inline asm>:1:2: note: instantiated into assembly here
COPY
^~~~
1 error generated.</pre>
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