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
@@ -7631,7 +7631,7 @@
   unsigned PreShift = INT32_MAX;
   for(auto Iter : OffsetMap) {
     if(PreShift != INT32_MAX){
-      if((Iter.first - PreShift) != (NarrowNumBits / 8))
+      if(Iter.first - PreShift != 1)
         return SDValue();
     }
     PreShift = Iter.first;