diff --git a/ir/ir.cpp b/ir/ir.cpp
new file mode 100644
index 00000000..dd7f611b
--- /dev/null
+++ b/ir/ir.cpp
@@ -0,0 +1,34 @@
+#include "llvm/Target/TargetData.h"
+
+#include "gen/irstate.h"
+#include "gen/tollvm.h"
+#include "gen/functions.h"
+
+#include "ir/ir.h"
+#include "ir/irfunction.h"
+
+
+unsigned GetTypeAlignment(Ir* ir, Type* t)
+{
+    return gTargetData->getABITypeAlignment(DtoType(t));
+}
+
+Ir::Ir()
+: irs(NULL)
+{
+}
+
+void Ir::addFunctionBody(IrFunction * f)
+{
+    functionbodies.push_back(f);
+}
+
+void Ir::emitFunctionBodies()
+{
+    while (!functionbodies.empty())
+    {
+        IrFunction* irf = functionbodies.front();
+        functionbodies.pop_front();
+        DtoDefineFunction(irf->decl);
+    }
+}
diff --git a/ir/irsymbol.cpp b/ir/irsymbol.cpp
new file mode 100644
index 00000000..2df8f06e
--- /dev/null
+++ b/ir/irsymbol.cpp
@@ -0,0 +1 @@
+#include "ir/irsymbol.h"
diff --git a/ir/irsymbol.h b/ir/irsymbol.h
new file mode 100644
index 00000000..635c8da5
--- /dev/null
+++ b/ir/irsymbol.h
@@ -0,0 +1,20 @@
+#ifndef __LDC_IR_IRSYMBOL_H__
+#define __LDC_IR_IRSYMBOL_H__
+
+#include "ir/ir.h"
+
+/// Base class for all symbols.
+struct IrSymbol
+{
+    ///
+    IrSymbol(Ir* ir) : ir(ir) {}
+
+    /// Migrate symbols to current module if necessary.
+    virtual void migrate() = 0;
+
+protected:
+    ///
+    Ir* ir;
+};
+
+#endif