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      1 //===- func-id-helper.h - XRay Function ID Conversion Helpers -------------===//
      2 //
      3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
      4 // See https://llvm.org/LICENSE.txt for license information.
      5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
      6 //
      7 //===----------------------------------------------------------------------===//
      8 //
      9 // Defines helper tools dealing with XRay-generated function ids.
     10 //
     11 //===----------------------------------------------------------------------===//
     12 #ifndef LLVM_TOOLS_LLVM_XRAY_FUNC_ID_HELPER_H
     13 #define LLVM_TOOLS_LLVM_XRAY_FUNC_ID_HELPER_H
     14 
     15 #include "llvm/ADT/DenseMap.h"
     16 #include "llvm/DebugInfo/Symbolize/Symbolize.h"
     17 #include <unordered_map>
     18 
     19 namespace llvm {
     20 namespace xray {
     21 
     22 // This class consolidates common operations related to Function IDs.
     23 class FuncIdConversionHelper {
     24 public:
     25   using FunctionAddressMap = std::unordered_map<int32_t, uint64_t>;
     26 
     27 private:
     28   std::string BinaryInstrMap;
     29   symbolize::LLVMSymbolizer &Symbolizer;
     30   const FunctionAddressMap &FunctionAddresses;
     31   mutable llvm::DenseMap<int32_t, std::string> CachedNames;
     32 
     33 public:
     34   FuncIdConversionHelper(std::string BinaryInstrMap,
     35                          symbolize::LLVMSymbolizer &Symbolizer,
     36                          const FunctionAddressMap &FunctionAddresses)
     37       : BinaryInstrMap(std::move(BinaryInstrMap)), Symbolizer(Symbolizer),
     38         FunctionAddresses(FunctionAddresses) {}
     39 
     40   // Returns the symbol or a string representation of the function id.
     41   std::string SymbolOrNumber(int32_t FuncId) const;
     42 
     43   // Returns the file and column from debug info for the given function id.
     44   std::string FileLineAndColumn(int32_t FuncId) const;
     45 };
     46 
     47 } // namespace xray
     48 } // namespace llvm
     49 
     50 #endif // LLVM_TOOLS_LLVM_XRAY_FUNC_ID_HELPER_H
     51