convert a couple more places to use the new getStore()

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114463 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/CodeGen/MachineMemOperand.h

@@ -64,6 +64,9 @@ struct MachinePointerInfo {
   /// getGOT - Return a MachinePointerInfo record that refers to a
   /// GOT entry.
   static MachinePointerInfo getGOT();
+  
+  /// getStack - stack pointer relative access.
+  static MachinePointerInfo getStack(int64_t Offset);
 };