use ScalarVT in visitEXTRACT_VECTOR_ELT

Author: dlee992

llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp

@@ -23440,10 +23440,10 @@ SDValue DAGCombiner::visitEXTRACT_VECTOR_ELT(SDNode *N) {
 
   // If Idx was -1 above, Elt is going to be -1, so just return undef.
   if (Elt == -1)
-    return DAG.getUNDEF(LVT);
+    return DAG.getUNDEF(ScalarVT);
 
-  if (SDValue Scalarized =
-          TLI.scalarizeExtractedVectorLoad(LVT, DL, VecVT, Index, LN0, DAG)) {
+  if (SDValue Scalarized = TLI.scalarizeExtractedVectorLoad(ScalarVT, DL, VecVT,
+                                                            Index, LN0, DAG)) {
     ++OpsNarrowed;
     return Scalarized;
   }