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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 - feature request: target_clones, to compile a given section multiple times and generate ifunc function to wrap it"
   href="https://bugs.llvm.org/show_bug.cgi?id=38097">38097</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>feature request: target_clones, to compile a given section multiple times and generate ifunc function to wrap it
          </td>
        </tr>

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

        <tr>
          <th>Version</th>
          <td>trunk
          </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>unassignedclangbugs@nondot.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>danielgb@au1.ibm.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>llvm-bugs@lists.llvm.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Like:
<a href="https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-target_005fclones-function-attribute">https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-target_005fclones-function-attribute</a>

This allows the same code, which may have an ideal optimization under a
particular CPU/feature, but can fall back the lowest supported feature from
-mcpu=.

This could take different cpus, or subtarget features like target attribute
(<a href="http://clang.llvm.org/docs/AttributeReference.html#target-gnu-tar">http://clang.llvm.org/docs/AttributeReference.html#target-gnu-tar</a>)</pre>
        </div>
      </p>


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