diff --git a/llvm/include/llvm/CodeGen/SelectionDAG.h b/llvm/include/llvm/CodeGen/SelectionDAG.h
--- a/llvm/include/llvm/CodeGen/SelectionDAG.h
+++ b/llvm/include/llvm/CodeGen/SelectionDAG.h
@@ -1136,6 +1136,7 @@
   /// Returns sum of the base pointer and offset.
   /// Unlike getObjectPtrOffset this does not set NoUnsignedWrap by default.
   SDValue getMemBasePlusOffset(SDValue Base, int64_t Offset, const SDLoc &DL);
+  SDValue getMemBasePlusOffset(SDValue Base, SDValue Offset, const SDLoc &DL);
 
   SDValue getMaskedLoad(EVT VT, const SDLoc &dl, SDValue Chain, SDValue Base,
                         SDValue Offset, SDValue Mask, SDValue Src0, EVT MemVT,
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -5734,6 +5734,13 @@
   return getNode(ISD::ADD, DL, VT, Base, getConstant(Offset, DL, VT));
 }
 
+SDValue SelectionDAG::getMemBasePlusOffset(SDValue Ptr, SDValue Offset,
+                                           const SDLoc &DL) {
+  assert(Offset.getValueType().isInteger());
+  EVT BasePtrVT = Ptr.getValueType();
+  return getNode(ISD::ADD, DL, BasePtrVT, Ptr, Offset);
+}
+
 /// Returns true if memcpy source is constant data.
 static bool isMemSrcFromConstant(SDValue Src, ConstantDataArraySlice &Slice) {
   uint64_t SrcDelta = 0;