| //===- 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; |
| uint64_t 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 |