[SYCL] Add SYCL-specific address spaces fixer pass.

Finds all addrspacecasts from named AS to private AS and
changes these casts to cast from named AS to generic AS.
Also replaces all calls and functions with new types
according with new addrspacecasts.

Signed-off-by: Vladimir Lazarev <vladimir.lazarev@intel.com>

llvm/include/llvm/InitializePasses.h

@@ -407,6 +407,7 @@ void initializeWinEHPreparePass(PassRegistry&);
 void initializeWriteBitcodePassPass(PassRegistry&);
 void initializeWriteThinLTOBitcodePass(PassRegistry&);
 void initializeXRayInstrumentationPass(PassRegistry&);
+void initializeASFixerPass(PassRegistry&);
 
 } // end namespace llvm
 

llvm/include/llvm/SYCL/ASFixer.h

@@ -0,0 +1,26 @@
+//===- ASFixer.h - SYCL address spaces fixer pass -------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// SYCL address spaces fixer pass
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_SYCL_ASFIXER_H
+#define LLVM_SYCL_ASFIXER_H
+
+#include "llvm/IR/Module.h"
+#include "llvm/Pass.h"
+
+namespace llvm {
+
+ModulePass *createASFixerPass();
+
+}
+
+#endif

llvm/lib/CMakeLists.txt

@@ -29,3 +29,4 @@ add_subdirectory(ToolDrivers)
 add_subdirectory(XRay)
 add_subdirectory(Testing)
 add_subdirectory(WindowsManifest)
+add_subdirectory(SYCL)