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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Allow clang-cl.exe /c -emit-llvm"
href="https://bugs.llvm.org/show_bug.cgi?id=35190">35190</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Allow clang-cl.exe /c -emit-llvm
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>5.0
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>Windows NT
</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>
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<th>Component</th>
<td>Driver
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>andreas.haferburg@gmx.de
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>There is no `-emit-llvm` flag in gcc, but the GCC driver was extended to
support `-emit-llvm`. The equivalent for cl.exe would be `/c -emit-llvm`, but
it doesn't work.
What I found very surprising is that `clang-cl /c -Xclang -emit-llvm
hello_world.c` doesn't even work. Maybe that is a bug.
All the examples on <a href="https://clang.llvm.org/docs/UsersManual.html">https://clang.llvm.org/docs/UsersManual.html</a> are written
for clang.exe, and they don't work anymore for clang-cl.exe.
The workaround for getting clang-cl.exe to emit IR is to run `clang-cl.exe
-###`, and then replace the `-emit-obj` with `-emit-llvm`, which I personally
find quite unintuitive.
The goal for clang-cl.exe is to be compatible with cl.exe. But in my opinion,
it should also remain compatible with LLVM: clang.exe should be LLVM+gcc, and
clang-cl.exe should be LLVM+cl.
Cf. <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED INVALID - clang-cl /MT results in linker error unless /link /DEFAULTLIB:LIBCMT.lib is added"
href="show_bug.cgi?id=35120">https://bugs.llvm.org/show_bug.cgi?id=35120</a></pre>
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