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      <base href="http://llvm.org/bugs/" />
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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 --- - AArch64: Assertion failed: (ScalarizedOp.getNode() && "Operand wasn't scalarized?"),"
   href="http://llvm.org/bugs/show_bug.cgi?id=20777">20777</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>AArch64: Assertion failed: (ScalarizedOp.getNode() && "Operand wasn't scalarized?"),
          </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>normal
          </td>
        </tr>

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

        <tr>
          <th>Component</th>
          <td>Backend: AArch64
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>grosbach@apple.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>Trying to scalarize the following asserts:

0x104843460: v1i1 = truncate [ORD=14] [ID=0] 0x104842a10
  0x104842a10: v1i16 = BUILD_VECTOR [ORD=12] [ID=-3] 0x104841840: i16 =
Constant<0> [ID=-3]

target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
target triple = "arm64-apple-ios5.0.0"

define void @autogen_SD20270() {
BB:
  %Tr = trunc <1 x i16> zeroinitializer to <1 x i1>
  br label %CF79

CF79:                                             ; preds = %CF79, %BB
  %E41 = extractelement <1 x i1> %Tr, i32 0
  %brmerge = or i1 %E41, undef
  br i1 %brmerge, label %CF79, label %CF77

CF77:                                             ; preds = %CF79
  ret void
}



Assertion failed: (ScalarizedOp.getNode() && "Operand wasn't scalarized?"),
function GetScalarizedVector, file
/Users/grosbaj/sources/llvm/lib/CodeGen/SelectionDAG/LegalizeTypes.h, line 505.


Found via llvm-stress.</pre>
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