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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 - [Reduce] basic block reduction assumes callinst"
   href="https://bugs.llvm.org/show_bug.cgi?id=46818">46818</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>[Reduce] basic block reduction assumes callinst
          </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>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>llvm-reduce
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>lebedev.ri@gmail.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>dblaikie@gmail.com, llvm-bugs@lists.llvm.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Just so i don't forget later on,

diff --git a/llvm/tools/llvm-reduce/deltas/ReduceBasicBlocks.cpp
b/llvm/tools/llvm-reduce/deltas/ReduceBasicBlocks.cpp
index 002d81a6748..e049c6f405c 100644
--- a/llvm/tools/llvm-reduce/deltas/ReduceBasicBlocks.cpp
+++ b/llvm/tools/llvm-reduce/deltas/ReduceBasicBlocks.cpp
@@ -41,6 +41,7 @@ static void replaceBranchTerminator(BasicBlock &BB,
   if (auto IndBI = dyn_cast<IndirectBrInst>(Term))
     Address = IndBI->getAddress();

+  Term->replaceAllUsesWith(UndefValue::get(Term->getType()));
   Term->eraseFromParent();

   if (ChunkSucessors.empty()) {</pre>
        </div>
      </p>


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