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/ADT/StringRef.h" 15 #include "llvm/CodeGen/DwarfStringPoolEntry.h" 16 #include "llvm/Support/Allocator.h" 17 18 namespace llvm { 19 20 class AsmPrinter; 21 class MCSection; 22 class MCSymbol; 23 24 // Collection of strings for this unit and assorted symbols. 25 // A String->Symbol mapping of strings used by indirect 26 // references. 27 class DwarfStringPool { 28 using EntryTy = DwarfStringPoolEntry; 29 30 StringMap<EntryTy, BumpPtrAllocator &> Pool; 31 StringRef Prefix; 32 unsigned NumBytes = 0; 33 bool ShouldCreateSymbols; 34 35 public: 36 using EntryRef = DwarfStringPoolEntryRef; 37 38 DwarfStringPool(BumpPtrAllocator &A, AsmPrinter &Asm, StringRef Prefix); 39 40 void emitStringOffsetsTableHeader(AsmPrinter &Asm, MCSection *OffsetSection, 41 MCSymbol *StartSym); 42 43 void emit(AsmPrinter &Asm, MCSection *StrSection, 44 MCSection *OffsetSection = nullptr, 45 bool UseRelativeOffsets = false); 46 47 bool empty() const { return Pool.empty(); } 48 49 unsigned size() const { return Pool.size(); } 50 51 /// Get a reference to an entry in the string pool. 52 EntryRef getEntry(AsmPrinter &Asm, StringRef Str); 53 }; 54 55 } // end namespace llvm 56 57 #endif // LLVM_LIB_CODEGEN_ASMPRINTER_DWARFSTRINGPOOL_H 58
