DwarfStringPool.h revision 302408 
1//===-- llvm/CodeGen/DwarfStringPool.h - Dwarf Debug Framework -*- 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#ifndef LLVM_LIB_CODEGEN_ASMPRINTER_DWARFSTRINGPOOL_H
11#define LLVM_LIB_CODEGEN_ASMPRINTER_DWARFSTRINGPOOL_H
12
13#include "llvm/ADT/StringMap.h"
14#include "llvm/CodeGen/DwarfStringPoolEntry.h"
15#include "llvm/Support/Allocator.h"
16#include <utility>
17
18namespace llvm {
19
20class AsmPrinter;
21class MCSymbol;
22class MCSection;
23class StringRef;
24
25// Collection of strings for this unit and assorted symbols.
26// A String->Symbol mapping of strings used by indirect
27// references.
28class DwarfStringPool {
29  typedef DwarfStringPoolEntry EntryTy;
30  StringMap<EntryTy, BumpPtrAllocator &> Pool;
31  StringRef Prefix;
32  unsigned NumBytes = 0;
33  bool ShouldCreateSymbols;
34
35public:
36  typedef DwarfStringPoolEntryRef EntryRef;
37
38  DwarfStringPool(BumpPtrAllocator &A, AsmPrinter &Asm, StringRef Prefix);
39
40  void emit(AsmPrinter &Asm, MCSection *StrSection,
41            MCSection *OffsetSection = nullptr);
42
43  bool empty() const { return Pool.empty(); }
44
45  /// Get a reference to an entry in the string pool.
46  EntryRef getEntry(AsmPrinter &Asm, StringRef Str);
47};
48}
49#endif
50