Index: TypeIndexDiscovery.cpp
===================================================================
--- TypeIndexDiscovery.cpp
+++ TypeIndexDiscovery.cpp
@@ -392,6 +392,9 @@
   case SymbolKind::S_LOCAL:
     Refs.push_back({TiRefKind::TypeRef, 0, 1}); // Type
     break;
+  case SymbolKind::S_REGISTER:
+    Refs.push_back({TiRefKind::TypeRef, 0, 1}); // Type
+    break;
   case SymbolKind::S_CONSTANT:
     Refs.push_back({TiRefKind::TypeRef, 0, 1}); // Type
     break;
Index: TypeIndexDiscoveryTest.cpp
===================================================================
--- TypeIndexDiscoveryTest.cpp
+++ TypeIndexDiscoveryTest.cpp
@@ -537,9 +537,9 @@
 
 TEST_F(TypeIndexIteratorTest, ProcSym) {
   ProcSym GS(SymbolRecordKind::GlobalProcSym);
-  GS.FunctionType = TypeIndex(0x40);
+  GS.FunctionType = TypeIndex::Float32();
   ProcSym LS(SymbolRecordKind::ProcSym);
-  LS.FunctionType = TypeIndex(0x41);
+  LS.FunctionType = TypeIndex::Float64();
   writeSymbolRecords(GS, LS);
   checkTypeReferences(0, GS.FunctionType);
   checkTypeReferences(1, LS.FunctionType);
@@ -547,11 +547,20 @@
 
 TEST_F(TypeIndexIteratorTest, DataSym) {
   DataSym DS(SymbolRecordKind::GlobalData);
-  DS.Type = TypeIndex(0x40);
+  DS.Type = TypeIndex::Float32();
   writeSymbolRecords(DS);
   checkTypeReferences(0, DS.Type);
 }
 
+TEST_F(TypeIndexIteratorTest, RegisterSym) {
+    RegisterSym Reg(SymbolRecordKind::RegisterSym);
+    Reg.Index = TypeIndex::UInt32();
+    Reg.Register = RegisterId::EAX;
+    Reg.Name = "Target";
+    writeSymbolRecords(Reg);
+    checkTypeReferences(0, Reg.Index);
+}
+
 TEST_F(TypeIndexIteratorTest, CallerSym) {
   CallerSym Callees(SymbolRecordKind::CalleeSym);
   Callees.Indices.push_back(TypeIndex(1));