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