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    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - In LLVM IR documentation, wrong regexp is listed for identifies"
   href="http://llvm.org/bugs/show_bug.cgi?id=22118">22118</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>In LLVM IR documentation, wrong regexp is listed for identifies
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>Documentation
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>trunk
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>All
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>All
          </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>General docs
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>tomas.brukner@gmail.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>llvmbugs@cs.uiuc.edu
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr></table>
      <p>
        <div>
        <pre>In the LLVM IR documentation, in the Identifiers section
(<a href="http://llvm.org/docs/LangRef.html#identifiers">http://llvm.org/docs/LangRef.html#identifiers</a>), this regexp is listed as the
one matching name of identifier:
‘[%@][a-zA-Z$._][a-zA-Z$._0-9]*‘

However, in the parser
(<a href="https://github.com/llvm-mirror/llvm/blob/master/lib/AsmParser/LLLexer.cpp">https://github.com/llvm-mirror/llvm/blob/master/lib/AsmParser/LLLexer.cpp</a>),
following regexp is mentioned:
[-a-zA-Z$._][-a-zA-Z$._0-9]*

The difference is that hyphen is allowed in identifiers. 

(For example "%thread-pre-split" is valid identifier - generated by Apple LLVM
version 6.0 (clang-600.0.56) (based on LLVM 3.5svn) for vim.)</pre>
        </div>
      </p>
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