//===- llvm/CodeGen/DwarfStringPool.h - Dwarf Debug Framework ---*- C++ -*-===// // // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. // See https://llvm.org/LICENSE.txt for license information. // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // //===----------------------------------------------------------------------===// #ifndef LLVM_LIB_CODEGEN_ASMPRINTER_DWARFSTRINGPOOL_H #define LLVM_LIB_CODEGEN_ASMPRINTER_DWARFSTRINGPOOL_H #include "llvm/ADT/StringMap.h" #include "llvm/ADT/StringRef.h" #include "llvm/CodeGen/DwarfStringPoolEntry.h" #include "llvm/Support/Allocator.h" namespace llvm { class AsmPrinter; class MCSection; class MCSymbol; // Collection of strings for this unit and assorted symbols. // A String->Symbol mapping of strings used by indirect // references. class DwarfStringPool { using EntryTy = DwarfStringPoolEntry; StringMap<EntryTy, BumpPtrAllocator &> Pool; StringRef Prefix; unsigned NumBytes = 0; unsigned NumIndexedStrings = 0; bool ShouldCreateSymbols; StringMapEntry<EntryTy> &getEntryImpl(AsmPrinter &Asm, StringRef Str); public: using EntryRef = DwarfStringPoolEntryRef; DwarfStringPool(BumpPtrAllocator &A, AsmPrinter &Asm, StringRef Prefix); void emitStringOffsetsTableHeader(AsmPrinter &Asm, MCSection *OffsetSection, MCSymbol *StartSym); void emit(AsmPrinter &Asm, MCSection *StrSection, MCSection *OffsetSection = nullptr, bool UseRelativeOffsets = false); bool empty() const { return Pool.empty(); } unsigned size() const { return Pool.size(); } unsigned getNumIndexedStrings() const { return NumIndexedStrings; } /// Get a reference to an entry in the string pool. EntryRef getEntry(AsmPrinter &Asm, StringRef Str); /// Same as getEntry, except that you can use EntryRef::getIndex to obtain a /// unique ID of this entry (e.g., for use in indexed forms like /// DW_FORM_strx). EntryRef getIndexedEntry(AsmPrinter &Asm, StringRef Str); }; } // end namespace llvm #endif // LLVM_LIB_CODEGEN_ASMPRINTER_DWARFSTRINGPOOL_H |