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+//===- OCLUtil.h - OCL Utilities declarations -------------------*- C++ -*-===//
+//
+//                     The LLVM/SPIRV Translator
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+// Copyright (c) 2014 Advanced Micro Devices, Inc. All rights reserved.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the "Software"),
+// to deal with 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:
+//
+// Redistributions of source code must retain the above copyright notice,
+// this list of conditions and the following disclaimers.
+// Redistributions in binary form must reproduce the above copyright notice,
+// this list of conditions and the following disclaimers in the documentation
+// and/or other materials provided with the distribution.
+// Neither the names of Advanced Micro Devices, Inc., nor the names of its
+// contributors may be used to endorse or promote products derived from this
+// Software without specific prior written permission.
+// 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
+// CONTRIBUTORS 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 WITH
+// THE SOFTWARE.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file declares OCL utility functions.
+//
+//===----------------------------------------------------------------------===//
+#include "SPRVInternal.h"
+
+#include <utility>
+#include <tuple>
+#include <functional>
+using namespace SPRV;
+using namespace llvm;
+
+namespace OCLUtil {
+
+typedef std::tuple<unsigned, OCLMemOrderKind, OCLMemScopeKind>
+  AtomicWorkItemFenceLiterals;
+
+/// Information for translating OCL builtin.
+struct OCLBuiltinTransInfo {
+  std::string UniqName;
+  /// Postprocessor of operands
+  std::function<void(std::vector<Value *>&)> PostProc;
+  OCLBuiltinTransInfo(){
+    PostProc = [](std::vector<Value *>&){};
+  }
+};
+
+/// OCL 1.x atomic memory order when translated to 2.0 atomics.
+const OCLMemOrderKind OCLLegacyAtomicMemOrder = OCLMO_seq_cst;
+
+/// OCL 1.x atomic memory scope when translated to 2.0 atomics.
+const OCLMemScopeKind OCLLegacyAtomicMemScope = OCLMS_device;
+
+/// Get literal arguments of call of atomic_work_item_fence.
+AtomicWorkItemFenceLiterals getAtomicWorkItemFenceLiterals(CallInst* CI);
+
+/// Get number of memory order arguments for atomic builtin function.
+size_t getAtomicBuiltinNumMemoryOrderArgs(StringRef Name);
+
+/// Get metadata operand as int.
+int getMDOperandAsInt(MDNode* N, unsigned I);
+
+/// Get metadata operand as string.
+std::string getMDOperandAsString(MDNode* N, unsigned I);
+
+/// Get metadata operand as type.
+Type* getMDOperandAsType(MDNode* N, unsigned I);
+
+/// Get OCL version from metadata opencl.ocl.version.
+/// \return 20 for OCL 2.0, 12 for OCL 1.2.
+unsigned getOCLVersion(Module *M);
+
+}
+