Index: llvm/trunk/include/llvm/CodeGen/SelectionDAG.h
===================================================================
--- llvm/trunk/include/llvm/CodeGen/SelectionDAG.h
+++ llvm/trunk/include/llvm/CodeGen/SelectionDAG.h
@@ -1041,7 +1041,7 @@
     unsigned Align = 0,
     MachineMemOperand::Flags Flags
     = MachineMemOperand::MOLoad | MachineMemOperand::MOStore,
-    unsigned Size = 0,
+    uint64_t Size = 0,
     const AAMDNodes &AAInfo = AAMDNodes());
 
   SDValue getMemIntrinsicNode(unsigned Opcode, const SDLoc &dl, SDVTList VTList,
Index: llvm/trunk/include/llvm/CodeGen/TargetLowering.h
===================================================================
--- llvm/trunk/include/llvm/CodeGen/TargetLowering.h
+++ llvm/trunk/include/llvm/CodeGen/TargetLowering.h
@@ -836,7 +836,7 @@
     PointerUnion<const Value *, const PseudoSourceValue *> ptrVal;
 
     int          offset = 0;       // offset off of ptrVal
-    unsigned     size = 0;         // the size of the memory location
+    uint64_t     size = 0;         // the size of the memory location
                                    // (taken from memVT if zero)
     MaybeAlign align = Align::None(); // alignment
 
Index: llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
===================================================================
--- llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -6553,7 +6553,7 @@
 SDValue SelectionDAG::getMemIntrinsicNode(
     unsigned Opcode, const SDLoc &dl, SDVTList VTList, ArrayRef<SDValue> Ops,
     EVT MemVT, MachinePointerInfo PtrInfo, unsigned Align,
-    MachineMemOperand::Flags Flags, unsigned Size, const AAMDNodes &AAInfo) {
+    MachineMemOperand::Flags Flags, uint64_t Size, const AAMDNodes &AAInfo) {
   if (Align == 0)  // Ensure that codegen never sees alignment 0
     Align = getEVTAlignment(MemVT);