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    <head>
      <base href="https://bugs.llvm.org/">
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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 - Implement ARMIselLowering::hasAndNot"
   href="https://bugs.llvm.org/show_bug.cgi?id=51876">51876</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Implement ARMIselLowering::hasAndNot
          </td>
        </tr>

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

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

        <tr>
          <th>Hardware</th>
          <td>PC
          </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>Backend: ARM
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>matze@braunis.de
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>llvm-bugs@lists.llvm.org, smithp352@googlemail.com, Ties.Stuij@arm.com
          </td>
        </tr></table>
      <p>
        <div>
        <pre>I noticed that ARM does not implement the `ARMISelLowering::hasAndNot` function
even though it has the bic / vbic operations[1]. Unfortunately in my tries it's
not as easy as just implementing the function since it leads to changed
patterns for integer saturations which requires updates to codegen matching.

[1] Noticed this in the context of "masked merge" /
<a href="https://reviews.llvm.org/D109194">https://reviews.llvm.org/D109194</a></pre>
        </div>
      </p>


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