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    <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 - Adopt variadic isa<> within LLVM code"
   href="https://bugs.llvm.org/show_bug.cgi?id=46483">46483</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Adopt variadic isa<> within LLVM code
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>libraries
          </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>enhancement
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>P
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>Core LLVM classes
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>jurahul@google.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>llvm-bugs@lists.llvm.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>llvm::isa<> is now a variadic template, so code such as:

isa<Type0>(x) || isa<Type1>(x) ...

can be replaced by 

isa<Type0, Type1, ...>(x).

Similarly, code such as:

!isa<Type0>(x) && !isa<Type1>(x) ...

can be replaced by

!isa<Type0, Type1, ...>

This bugs is to consider adopting this within the LLVM code base. I see
numerous places where this pattern is uses and can be simplified using a
variadic isa<>.</pre>
        </div>
      </p>


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