DAG: Correct pointer type used for stack slot

Correct the address space for the inserted argument
stack slot.

AMDGPU seems to not do anything with this information,
so I don't think this was breaking anything.

llvm-svn: 338428

llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp

@@ -8335,7 +8335,8 @@ TargetLowering::LowerCallTo(TargetLowering::CallLoweringInfo &CLI) const {
     unsigned Align = DL.getPrefTypeAlignment(CLI.RetTy);
     MachineFunction &MF = CLI.DAG.getMachineFunction();
     DemoteStackIdx = MF.getFrameInfo().CreateStackObject(TySize, Align, false);
-    Type *StackSlotPtrType = PointerType::getUnqual(CLI.RetTy);
+    Type *StackSlotPtrType = PointerType::get(CLI.RetTy,
+                                              DL.getAllocaAddrSpace());
 
     DemoteStackSlot = CLI.DAG.getFrameIndex(DemoteStackIdx, getFrameIndexTy(DL));
     ArgListEntry Entry;