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diff --git a/src/llvmopencl/TargetAddressSpaces.h b/src/llvmopencl/TargetAddressSpaces.h
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+// Header for TargetAddressSpaces, an LLVM pass that converts the
+// generic address space ids to the target specific ones.
+// 
+// Copyright (c) 2013 Pekka Jääskeläinen / TUT
+// 
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+// 
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#ifndef _POCL_TARGET_ADDRESS_SPACES_H
+#define _POCL_TARGET_ADDRESS_SPACES_H
+
+#include "config.h"
+#if (defined LLVM_3_1 or defined LLVM_3_2)
+#include "llvm/Function.h"
+#else
+#include "llvm/IR/Function.h"
+#endif
+
+#include "llvm/Pass.h"
+
+namespace pocl {
+  /* pocl uses the fixed address space ids forced by the clang's
+     -ffake-address-space-map internally until the end to be able to
+     detect the different OpenCL address spaces ambiguously, regardless
+     of the target. This pass converts the fake address space ids to
+     the target-specific ones, if required by the code generator of that
+     target. */       
+  class TargetAddressSpaces : public llvm::ModulePass {
+  public:
+    static char ID;
+
+    TargetAddressSpaces();
+    virtual ~TargetAddressSpaces() {};
+
+    virtual bool runOnModule(llvm::Module &M);    
+  };
+}
+
+#endif