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
29namespace llvm {
30
31class GlobalValue;
32
33class ModuleSymbolTable {
34public:
35  using AsmSymbol = std::pair<std::string, uint32_t>;
36  using Symbol = PointerUnion<GlobalValue *, AsmSymbol *>;
37
38private:
39  Module *FirstMod = nullptr;
40
41  SpecificBumpPtrAllocator<AsmSymbol> AsmSymbols;
42  std::vector<Symbol> SymTab;
43  Mangler Mang;
44
45public:
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