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1 //===- func-id-helper.h - XRay Function ID Conversion Helpers -------------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // Defines helper tools dealing with XRay-generated function ids.
11 //
12 //===----------------------------------------------------------------------===//
13 #ifndef LLVM_TOOLS_LLVM_XRAY_FUNC_ID_HELPER_H
14 #define LLVM_TOOLS_LLVM_XRAY_FUNC_ID_HELPER_H
15 
16 #include "llvm/ADT/DenseMap.h"
17 #include "llvm/DebugInfo/Symbolize/Symbolize.h"
18 #include <unordered_map>
19 
20 namespace llvm {
21 namespace xray {
22 
23 // This class consolidates common operations related to Function IDs.
24 class FuncIdConversionHelper {
25 public:
26   using FunctionAddressMap = std::unordered_map<int32_t, uint64_t>;
27 
28 private:
29   std::string BinaryInstrMap;
30   symbolize::LLVMSymbolizer &Symbolizer;
31   const FunctionAddressMap &FunctionAddresses;
32   mutable llvm::DenseMap<int32_t, std::string> CachedNames;
33 
34 public:
FuncIdConversionHelper(std::string BinaryInstrMap,symbolize::LLVMSymbolizer & Symbolizer,const FunctionAddressMap & FunctionAddresses)35   FuncIdConversionHelper(std::string BinaryInstrMap,
36                          symbolize::LLVMSymbolizer &Symbolizer,
37                          const FunctionAddressMap &FunctionAddresses)
38       : BinaryInstrMap(std::move(BinaryInstrMap)), Symbolizer(Symbolizer),
39         FunctionAddresses(FunctionAddresses) {}
40 
41   // Returns the symbol or a string representation of the function id.
42   std::string SymbolOrNumber(int32_t FuncId) const;
43 
44   // Returns the file and column from debug info for the given function id.
45   std::string FileLineAndColumn(int32_t FuncId) const;
46 };
47 
48 } // namespace xray
49 } // namespace llvm
50 
51 #endif // LLVM_TOOLS_LLVM_XRAY_FUNC_ID_HELPER_H
52