1 //===- ModuleSymbolTable.h - symbol table for in-memory IR ------*- C++ -*-===// 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 // This class represents a symbol table built from in-memory IR. It provides 11 // access to GlobalValues and should only be used if such access is required 12 // (e.g. in the LTO implementation). 13 // 14 //===----------------------------------------------------------------------===// 15 16 #ifndef LLVM_OBJECT_MODULESYMBOLTABLE_H 17 #define LLVM_OBJECT_MODULESYMBOLTABLE_H 18 19 #include "llvm/ADT/ArrayRef.h" 20 #include "llvm/ADT/PointerUnion.h" 21 #include "llvm/IR/Mangler.h" 22 #include "llvm/Object/SymbolicFile.h" 23 #include "llvm/Support/Allocator.h" 24 #include <cstdint> 25 #include <string> 26 #include <utility> 27 #include <vector> 28 29 namespace llvm { 30 31 class GlobalValue; 32 33 class ModuleSymbolTable { 34 public: 35 using AsmSymbol = std::pair<std::string, uint32_t>; 36 using Symbol = PointerUnion<GlobalValue *, AsmSymbol *>; 37 38 private: 39 Module *FirstMod = nullptr; 40 41 SpecificBumpPtrAllocator<AsmSymbol> AsmSymbols; 42 std::vector<Symbol> SymTab; 43 Mangler Mang; 44 45 public: 46 ArrayRef<Symbol> symbols() const { return SymTab; } 47 void addModule(Module *M); 48 49 void printSymbolName(raw_ostream &OS, Symbol S) const; 50 uint32_t getSymbolFlags(Symbol S) const; 51 52 /// Parse inline ASM and collect the symbols that are defined or referenced in 53 /// the current module. 54 /// 55 /// For each found symbol, call \p AsmSymbol with the name of the symbol found 56 /// and the associated flags. 57 static void CollectAsmSymbols( 58 const Module &M, 59 function_ref<void(StringRef, object::BasicSymbolRef::Flags)> AsmSymbol); 60 }; 61 62 } // end namespace llvm 63 64 #endif // LLVM_OBJECT_MODULESYMBOLTABLE_H 65
