1 //===- ModuleSymbolTable.h - symbol table for in-memory IR ------*- C++ -*-===//
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
7 //===----------------------------------------------------------------------===//
9 // This class represents a symbol table built from in-memory IR. It provides
10 // access to GlobalValues and should only be used if such access is required
11 // (e.g. in the LTO implementation).
13 //===----------------------------------------------------------------------===//
15 #ifndef LLVM_OBJECT_MODULESYMBOLTABLE_H
16 #define LLVM_OBJECT_MODULESYMBOLTABLE_H
18 #include "llvm/ADT/ArrayRef.h"
19 #include "llvm/ADT/PointerUnion.h"
20 #include "llvm/IR/Mangler.h"
21 #include "llvm/Object/SymbolicFile.h"
22 #include "llvm/Support/Allocator.h"
32 class ModuleSymbolTable {
34 using AsmSymbol = std::pair<std::string, uint32_t>;
35 using Symbol = PointerUnion<GlobalValue *, AsmSymbol *>;
38 Module *FirstMod = nullptr;
40 SpecificBumpPtrAllocator<AsmSymbol> AsmSymbols;
41 std::vector<Symbol> SymTab;
45 ArrayRef<Symbol> symbols() const { return SymTab; }
46 void addModule(Module *M);
48 void printSymbolName(raw_ostream &OS, Symbol S) const;
49 uint32_t getSymbolFlags(Symbol S) const;
51 /// Parse inline ASM and collect the symbols that are defined or referenced in
52 /// the current module.
54 /// For each found symbol, call \p AsmSymbol with the name of the symbol found
55 /// and the associated flags.
56 static void CollectAsmSymbols(
58 function_ref<void(StringRef, object::BasicSymbolRef::Flags)> AsmSymbol);
60 /// Parse inline ASM and collect the symvers directives that are defined in
61 /// the current module.
63 /// For each found symbol, call \p AsmSymver with the name of the symbol and
66 CollectAsmSymvers(const Module &M,
67 function_ref<void(StringRef, StringRef)> AsmSymver);
70 } // end namespace llvm
72 #endif // LLVM_OBJECT_MODULESYMBOLTABLE_H