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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - cc1as chokes on assembly from clang's `-S` option when WebAssembly is the target"
href="https://bugs.llvm.org/show_bug.cgi?id=34544">34544</a>
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<th>Summary</th>
<td>cc1as chokes on assembly from clang's `-S` option when WebAssembly is the target
</td>
</tr>
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<th>Product</th>
<td>libraries
</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>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>enhancement
</td>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>Backend: WebAssembly
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>mvogelsang@rocketmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=19129" name="attach_19129" title="wasm-main.s">attachment 19129</a> <a href="attachment.cgi?id=19129&action=edit" title="wasm-main.s">[details]</a></span>
wasm-main.s
If we have the file `main.c` with the contents
'''
int main() { return 1; }
'''
and $CC is a clang built to target wasm32-unknown-unknown-wasm, we can produce
assembly with `$CC -S main.c`.
However, clang can't process the resulting main.s file, although it's contents
seem perfectly valid. Running `$CC main.s` results in
`clang -cc1as: error: unknown target triple 'wasm32-unknown-unknown-wasm',
please use -triple or -arch`
Doing the same process with a clang set to target aarch64-unknown-linux-gnu
results in perfectly fine code built for ARM.
The relevant .s files are attached</pre>
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