[RDF] Move normalize(RegisterRef) to PhysicalRegisterInfo

Remove the duplicate from DFG and make some members of PRI private.

llvm-svn: 295351
diff --git a/llvm/lib/Target/Hexagon/HexagonOptAddrMode.cpp b/llvm/lib/Target/Hexagon/HexagonOptAddrMode.cpp
index f99a064..73fa0b3 100644
--- a/llvm/lib/Target/Hexagon/HexagonOptAddrMode.cpp
+++ b/llvm/lib/Target/Hexagon/HexagonOptAddrMode.cpp
@@ -230,7 +230,7 @@
   for (NodeAddr<DefNode *> DA : SA.Addr->members_if(DFG->IsDef, *DFG)) {
     DEBUG(dbgs() << "\t\t[DefNode]: " << Print<NodeAddr<DefNode *>>(DA, *DFG)
                  << "\n");
-    RegisterRef DR = DFG->normalizeRef(DA.Addr->getRegRef(*DFG));
+    RegisterRef DR = DFG->getPRI().normalize(DA.Addr->getRegRef(*DFG));
 
     auto UseSet = LV->getAllReachedUses(DR, DA);