<html>
    <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 --- - Bugpoint enhancement: Simplify pointer types"
   href="https://llvm.org/bugs/show_bug.cgi?id=29028">29028</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Bugpoint enhancement: Simplify pointer types
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>tools
          </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>normal
          </td>
        </tr>

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

        <tr>
          <th>Component</th>
          <td>bugpoint
          </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
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr></table>
      <p>
        <div>
        <pre>It is often possible to simplify pointer types to further simplify the output.
Example:

I had a case where instead of this:

%"class.llvm::ilist_node.271.331.53909.117119.330.3340.3942.4544.6350.9962.12644"
= type {
%"struct.llvm::ilist_node_base.106.53685.116895.106.3116.3718.4320.6126.9738.12643"
}
%"struct.llvm::ilist_node_base.106.53685.116895.106.3116.3718.4320.6126.9738.12643"
= type {
%"class.llvm::PointerIntPair.0.105.53684.116894.105.3115.3717.4319.6125.9737.12642",
%"struct.llvm::ilist_node_base.106.53685.116895.106.3116.3718.4320.6126.9738.12643"*
}
%"class.llvm::PointerIntPair.0.105.53684.116894.105.3115.3717.4319.6125.9737.12642"
= type { i64 }
...
%cmp.i202 = icmp eq
%"class.llvm::ilist_node.271.331.53909.117119.330.3340.3942.4544.6350.9962.12644"*
undef, undef


This would do and save a bunch of type declarations:

%cmp.i202 = icmp eq i8* undef, undef</pre>
        </div>
      </p>
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