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