diff --git a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
--- a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
@@ -17235,6 +17235,12 @@
 
   EVT ResultVT = EVE->getValueType(0);
   EVT VecEltVT = InVecVT.getVectorElementType();
+
+  // If the vector element type is narrower than a byte then we are unable to
+  // compute an address to load only the extracted element as a scalar.
+  if (VecEltVT.getSizeInBits() < 8)
+    return SDValue();
+
   unsigned Align = OriginalLoad->getAlignment();
   unsigned NewAlign = DAG.getDataLayout().getABITypeAlignment(
       VecEltVT.getTypeForEVT(*DAG.getContext()));