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    <head>
      <base href="https://llvm.org/bugs/" />
    </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 --- - llc emits AT&T-mnemonic when using -O0 --x86-asm-syntax=intel"
   href="https://llvm.org/bugs/show_bug.cgi?id=27784">27784</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>llc emits AT&T-mnemonic when using -O0 --x86-asm-syntax=intel
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>clang
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>3.8
          </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>thrimbor.github@gmail.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>Created <span class=""><a href="attachment.cgi?id=16376" name="attach_16376" title="FreeBASIC code triggering the bug, along with LLVM-IR and assembly files.">attachment 16376</a> <a href="attachment.cgi?id=16376&action=edit" title="FreeBASIC code triggering the bug, along with LLVM-IR and assembly files.">[details]</a></span>
FreeBASIC code triggering the bug, along with LLVM-IR and assembly files.

When using -O0 in combination with --x86-asm-syntax=intel, llc produces
assembly which contains the "movabs"-mnemonic which makes the GNU assembler
fail. Replacing the "movabs" with a normal "mov" seems to resolve the issue.
Also, this doesn't seem to happen when using optimization levels other than
-O0.

The LLVM-IR-code which triggered this behavior was generated by the
FreeBASIC-compiler, sources are attached.</pre>
        </div>
      </p>
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