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diff --git a/tools/llvm-xray/func-id-helper.h b/tools/llvm-xray/func-id-helper.h
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+++ b/tools/llvm-xray/func-id-helper.h
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+//===- func-id-helper.h - XRay Function ID Conversion Helpers -------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// Defines helper tools dealing with XRay-generated function ids.
+//
+//===----------------------------------------------------------------------===//
+#ifndef LLVM_TOOLS_LLVM_XRAY_FUNC_ID_HELPER_H
+#define LLVM_TOOLS_LLVM_XRAY_FUNC_ID_HELPER_H
+
+#include "llvm/DebugInfo/Symbolize/Symbolize.h"
+#include <unordered_map>
+
+namespace llvm {
+namespace xray {
+
+// This class consolidates common operations related to Function IDs.
+class FuncIdConversionHelper {
+public:
+  using FunctionAddressMap = std::unordered_map<int32_t, uint64_t>;
+
+private:
+  std::string BinaryInstrMap;
+  symbolize::LLVMSymbolizer &Symbolizer;
+  const FunctionAddressMap &FunctionAddresses;
+
+public:
+  FuncIdConversionHelper(std::string BinaryInstrMap,
+                         symbolize::LLVMSymbolizer &Symbolizer,
+                         const FunctionAddressMap &FunctionAddresses)
+      : BinaryInstrMap(std::move(BinaryInstrMap)), Symbolizer(Symbolizer),
+        FunctionAddresses(FunctionAddresses) {}
+
+  // Returns the symbol or a string representation of the function id.
+  std::string SymbolOrNumber(int32_t FuncId) const;
+
+  // Returns the file and column from debug info for the given function id.
+  std::string FileLineAndColumn(int32_t FuncId) const;
+};
+
+} // namespace xray
+} // namespace llvm
+
+#endif // LLVM_TOOLS_LLVM_XRAY_FUNC_ID_HELPER_H