diff --git a/dmd/mtype.h b/dmd/mtype.h
index f2b11346..80e605d7 100644
--- a/dmd/mtype.h
+++ b/dmd/mtype.h
@@ -23,7 +23,7 @@
 
 #if IN_LLVM
 // llvm
-#include "../ir/irtype.h"
+#include "../ir/irdtype.h"
 #include "../ir/irfuncty.h"
 namespace llvm { class Type; }
 struct Ir;
@@ -279,7 +279,7 @@ struct Type : Object
 
 #if IN_LLVM
     // LDC
-    IrType ir;
+    IrDType ir;
     static Ir* sir;
 #endif
 };
diff --git a/gen/toobj.cpp b/gen/toobj.cpp
index 4a7ef3a5..6677e61a 100644
--- a/gen/toobj.cpp
+++ b/gen/toobj.cpp
@@ -96,7 +96,7 @@ llvm::Module* Module::genLLVMModule(Ir* sir)
 
     // reset all IR data stored in Dsymbols and Types
     IrDsymbol::resetAll();
-    IrType::resetAll();
+    IrDType::resetAll();
 
     sir->setState(&ir);
 
diff --git a/ir/irtype.cpp b/ir/irdtype.cpp
similarity index 57%
rename from ir/irtype.cpp
rename to ir/irdtype.cpp
index c1944d89..24293962 100644
--- a/ir/irtype.cpp
+++ b/ir/irdtype.cpp
@@ -1,34 +1,34 @@
 #include "gen/llvm.h"
 #include "ir/ir.h"
-#include "ir/irtype.h"
+#include "ir/irdtype.h"
 
-std::set<IrType*> IrType::list;
+std::set<IrDType*> IrDType::list;
 
-void IrType::resetAll()
+void IrDType::resetAll()
 {
-    std::set<IrType*>::iterator it;
+    std::set<IrDType*>::iterator it;
     for(it = list.begin(); it != list.end(); ++it)
         (*it)->reset();
 }
 
-IrType::IrType()
+IrDType::IrDType()
 {
     assert(list.insert(this).second);
     reset();
 }
 
-IrType::IrType(const IrType& s)
+IrDType::IrDType(const IrDType& s)
 {
     assert(list.insert(this).second);
     type = s.type;
 }
 
-IrType::~IrType()
+IrDType::~IrDType()
 {
     list.erase(this);
 }
 
-void IrType::reset()
+void IrDType::reset()
 {
     type = NULL;
 }
diff --git a/ir/irtype.h b/ir/irdtype.h
similarity index 71%
rename from ir/irtype.h
rename to ir/irdtype.h
index f011f5ef..de7c4fc3 100644
--- a/ir/irtype.h
+++ b/ir/irdtype.h
@@ -7,16 +7,16 @@ namespace llvm {
     class PATypeHolder;
 }
 
-struct IrType
+struct IrDType
 {
-    static std::set<IrType*> list;
+    static std::set<IrDType*> list;
     static void resetAll();
 
     // overload all of these to make sure
     // the static list is up to date
-    IrType();
-    IrType(const IrType& s);
-    ~IrType();
+    IrDType();
+    IrDType(const IrDType& s);
+    ~IrDType();
 
     void reset();