<html>
    <head>
      <base href="https://bugs.llvm.org/">
    </head>
    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - .cfi_return_column not supported"
   href="https://bugs.llvm.org/show_bug.cgi?id=33953">33953</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>.cfi_return_column not supported
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>new-bugs
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>unspecified
          </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>new bugs
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>unassignedbugs@nondot.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>xdje42@gmail.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>llvm-bugs@lists.llvm.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>GAS supports .cfi_return_column:

<a href="https://sourceware.org/binutils/docs-2.29/as/CFI-directives.html#g_t_002ecfi_005freturn_005fcolumn-register">https://sourceware.org/binutils/docs-2.29/as/CFI-directives.html#g_t_002ecfi_005freturn_005fcolumn-register</a>

I'm getting the following:

magenta$ prebuilt/downloads/clang+llvm-x86_64-linux/bin/clang --version
Fuchsia clang version 6.0.0
(/b/s/w/ir/cache/git/fuchsia.googlesource.com-third_party-clang
36d969c2a922522b11a461fc36c12d6ed7a03d37) (/b/s/w/ir/cache/git/fuchs\
ia.googlesource.com-third_party-llvm e95e3157f4334e1953998bbe393bbac97f1ad72d)
(based on LLVM 6.0.0git-e95e3157f43git-e95e3157f43)

...

<instantiation>:4:5: error: unknown directive
    .cfi_return_column 33
    ^
<instantiation>:1:1: note: while in macro instantiation
...</pre>
        </div>
      </p>


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