LLVM 20.0.0git
ModuleSymbolTable.h
Go to the documentation of this file.
1//===- ModuleSymbolTable.h - symbol table for in-memory IR ------*- C++ -*-===//
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// 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).
12//
13//===----------------------------------------------------------------------===//
14
15#ifndef LLVM_OBJECT_MODULESYMBOLTABLE_H
16#define LLVM_OBJECT_MODULESYMBOLTABLE_H
17
18#include "llvm/ADT/ArrayRef.h"
20#include "llvm/IR/Mangler.h"
23#include <cstdint>
24#include <string>
25#include <utility>
26#include <vector>
27
28namespace llvm {
29
30class GlobalValue;
31class Module;
32
34public:
35 using AsmSymbol = std::pair<std::string, uint32_t>;
37
38private:
39 Module *FirstMod = nullptr;
40
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;
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,
60
61 /// Parse inline ASM and collect the symvers directives that are defined in
62 /// the current module.
63 ///
64 /// For each found symbol, call \p AsmSymver with the name of the symbol and
65 /// its alias.
66 static void
68 function_ref<void(StringRef, StringRef)> AsmSymver);
69};
70
71} // end namespace llvm
72
73#endif // LLVM_OBJECT_MODULESYMBOLTABLE_H
This file defines the BumpPtrAllocator interface.
Machine Check Debug Module
This file defines the PointerUnion class, which is a discriminated union of pointer types.
raw_pwrite_stream & OS
ArrayRef - Represent a constant reference to an array (0 or more elements consecutively in memory),...
Definition: ArrayRef.h:41
static void CollectAsmSymvers(const Module &M, function_ref< void(StringRef, StringRef)> AsmSymver)
Parse inline ASM and collect the symvers directives that are defined in the current module.
std::pair< std::string, uint32_t > AsmSymbol
void printSymbolName(raw_ostream &OS, Symbol S) const
PointerUnion< GlobalValue *, AsmSymbol * > Symbol
uint32_t getSymbolFlags(Symbol S) const
ArrayRef< Symbol > symbols() const
static void CollectAsmSymbols(const Module &M, function_ref< void(StringRef, object::BasicSymbolRef::Flags)> AsmSymbol)
Parse inline ASM and collect the symbols that are defined or referenced in the current module.
A Module instance is used to store all the information related to an LLVM module.
Definition: Module.h:65
A discriminated union of two or more pointer types, with the discriminator in the low bit of the poin...
Definition: PointerUnion.h:118
A BumpPtrAllocator that allows only elements of a specific type to be allocated.
Definition: Allocator.h:389
StringRef - Represent a constant reference to a string, i.e.
Definition: StringRef.h:50
An efficient, type-erasing, non-owning reference to a callable.
This class implements an extremely fast bulk output stream that can only output to a stream.
Definition: raw_ostream.h:52
This is an optimization pass for GlobalISel generic memory operations.
Definition: AddressRanges.h:18