Revise my previous change 68996 as suggested by Duncan.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69607 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
index d1ef081..72b3e36 100644
--- a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
+++ b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
@@ -3811,12 +3811,8 @@
SDValue Op = BV->getOperand(i);
// If the vector element type is not legal, the BUILD_VECTOR operands
// are promoted and implicitly truncated. Make that explicit here.
- if (Op.getValueType() != SrcEltVT) {
- if (Op.getOpcode() == ISD::UNDEF)
- Op = DAG.getUNDEF(SrcEltVT);
- else
- Op = DAG.getNode(ISD::TRUNCATE, BV->getDebugLoc(), SrcEltVT, Op);
- }
+ if (Op.getValueType() != SrcEltVT)
+ Op = DAG.getNode(ISD::TRUNCATE, BV->getDebugLoc(), SrcEltVT, Op);
Ops.push_back(DAG.getNode(ISD::BIT_CONVERT, BV->getDebugLoc(),
DstEltVT, Op));
AddToWorkList(Ops.back().getNode());