<html>
    <head>
      <base href="http://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 --- - [ARM64] Assertion failure on type legalization about operand wasn't scalarized"
   href="http://llvm.org/bugs/show_bug.cgi?id=19335">19335</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>[ARM64] Assertion failure on type legalization about operand wasn't scalarized
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>new-bugs
          </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>normal
          </td>
        </tr>

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

        <tr>
          <th>Component</th>
          <td>new bugs
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>Hao.Liu@arm.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>llvmbugs@cs.uiuc.edu
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Test case test.c:
------------------------------------------------------------------
#include "arm_neon.h"

uint64_t dotests_type_legalizer(int64x1_t in0) {
      return vget_lane_u64(vorn_u64(vcgez_s64(in0),
                                    in0),
                           0);
}
------------------------------------------------------------------

To RUN:
clang -O3 --target=arm64-linux-gnu -c test.c

The Error information is as following:
/lib/CodeGen/SelectionDAG/LegalizeTypes.h:506: llvm::SDValue
llvm::DAGTypeLegalizer::GetScalarizedVector(llvm::SDValue): Assertion
`ScalarizedOp.getNode() && "Operand wasn't scalarized?"' failed.


AArch64 backend once also had such assertion failure. It was fixed in the
backend <a href="http://llvm.org/viewvc/llvm-project?view=revision&revision=201381">http://llvm.org/viewvc/llvm-project?view=revision&revision=201381</a>.</pre>
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