10b57cec5SDimitry Andric //===- llvm/CodeGen/DwarfStringPool.h - Dwarf Debug Framework ---*- C++ -*-===// 20b57cec5SDimitry Andric // 30b57cec5SDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 40b57cec5SDimitry Andric // See https://llvm.org/LICENSE.txt for license information. 50b57cec5SDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 60b57cec5SDimitry Andric // 70b57cec5SDimitry Andric //===----------------------------------------------------------------------===// 80b57cec5SDimitry Andric 90b57cec5SDimitry Andric #ifndef LLVM_LIB_CODEGEN_ASMPRINTER_DWARFSTRINGPOOL_H 100b57cec5SDimitry Andric #define LLVM_LIB_CODEGEN_ASMPRINTER_DWARFSTRINGPOOL_H 110b57cec5SDimitry Andric 120b57cec5SDimitry Andric #include "llvm/ADT/StringMap.h" 130b57cec5SDimitry Andric #include "llvm/ADT/StringRef.h" 140b57cec5SDimitry Andric #include "llvm/CodeGen/DwarfStringPoolEntry.h" 150b57cec5SDimitry Andric #include "llvm/Support/Allocator.h" 160b57cec5SDimitry Andric 170b57cec5SDimitry Andric namespace llvm { 180b57cec5SDimitry Andric 190b57cec5SDimitry Andric class AsmPrinter; 200b57cec5SDimitry Andric class MCSection; 210b57cec5SDimitry Andric class MCSymbol; 220b57cec5SDimitry Andric 230b57cec5SDimitry Andric // Collection of strings for this unit and assorted symbols. 240b57cec5SDimitry Andric // A String->Symbol mapping of strings used by indirect 250b57cec5SDimitry Andric // references. 260b57cec5SDimitry Andric class DwarfStringPool { 270b57cec5SDimitry Andric using EntryTy = DwarfStringPoolEntry; 280b57cec5SDimitry Andric 290b57cec5SDimitry Andric StringMap<EntryTy, BumpPtrAllocator &> Pool; 300b57cec5SDimitry Andric StringRef Prefix; 31*e8d8bef9SDimitry Andric uint64_t NumBytes = 0; 320b57cec5SDimitry Andric unsigned NumIndexedStrings = 0; 330b57cec5SDimitry Andric bool ShouldCreateSymbols; 340b57cec5SDimitry Andric 350b57cec5SDimitry Andric StringMapEntry<EntryTy> &getEntryImpl(AsmPrinter &Asm, StringRef Str); 360b57cec5SDimitry Andric 370b57cec5SDimitry Andric public: 380b57cec5SDimitry Andric using EntryRef = DwarfStringPoolEntryRef; 390b57cec5SDimitry Andric 400b57cec5SDimitry Andric DwarfStringPool(BumpPtrAllocator &A, AsmPrinter &Asm, StringRef Prefix); 410b57cec5SDimitry Andric 420b57cec5SDimitry Andric void emitStringOffsetsTableHeader(AsmPrinter &Asm, MCSection *OffsetSection, 430b57cec5SDimitry Andric MCSymbol *StartSym); 440b57cec5SDimitry Andric 450b57cec5SDimitry Andric void emit(AsmPrinter &Asm, MCSection *StrSection, 460b57cec5SDimitry Andric MCSection *OffsetSection = nullptr, 470b57cec5SDimitry Andric bool UseRelativeOffsets = false); 480b57cec5SDimitry Andric empty()490b57cec5SDimitry Andric bool empty() const { return Pool.empty(); } 500b57cec5SDimitry Andric size()510b57cec5SDimitry Andric unsigned size() const { return Pool.size(); } 520b57cec5SDimitry Andric getNumIndexedStrings()530b57cec5SDimitry Andric unsigned getNumIndexedStrings() const { return NumIndexedStrings; } 540b57cec5SDimitry Andric 550b57cec5SDimitry Andric /// Get a reference to an entry in the string pool. 560b57cec5SDimitry Andric EntryRef getEntry(AsmPrinter &Asm, StringRef Str); 570b57cec5SDimitry Andric 580b57cec5SDimitry Andric /// Same as getEntry, except that you can use EntryRef::getIndex to obtain a 590b57cec5SDimitry Andric /// unique ID of this entry (e.g., for use in indexed forms like 600b57cec5SDimitry Andric /// DW_FORM_strx). 610b57cec5SDimitry Andric EntryRef getIndexedEntry(AsmPrinter &Asm, StringRef Str); 620b57cec5SDimitry Andric }; 630b57cec5SDimitry Andric 640b57cec5SDimitry Andric } // end namespace llvm 650b57cec5SDimitry Andric 660b57cec5SDimitry Andric #endif // LLVM_LIB_CODEGEN_ASMPRINTER_DWARFSTRINGPOOL_H 67