diff --git a/utils/TableGen/CodeGenRegisters.cpp b/utils/TableGen/CodeGenRegisters.cpp
index 7179611f012..e36066adf7a 100644
--- a/utils/TableGen/CodeGenRegisters.cpp
+++ b/utils/TableGen/CodeGenRegisters.cpp
@@ -730,7 +730,8 @@ CodeGenRegisterClass::CodeGenRegisterClass(CodeGenRegBank &RegBank,
     SpillSize(Props.SpillSize),
     SpillAlignment(Props.SpillAlignment),
     CopyCost(0),
-    Allocatable(true) {
+    Allocatable(true),
+    AllocationPriority(0) {
   for (const auto R : Members)
     TopoSigs.set(R->getTopoSig());
 }
@@ -750,6 +751,7 @@ void CodeGenRegisterClass::inheritProperties(CodeGenRegBank &RegBank) {
   CopyCost = Super.CopyCost;
   Allocatable = Super.Allocatable;
   AltOrderSelect = Super.AltOrderSelect;
+  AllocationPriority = Super.AllocationPriority;
 
   // Copy all allocation orders, filter out foreign registers from the larger
   // super-class.