67 lines
2.1 KiB
C
67 lines
2.1 KiB
C
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//===- llvm/CodeGen/DwarfStringPool.h - Dwarf Debug Framework ---*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_CODEGEN_ASMPRINTER_DWARFSTRINGPOOL_H
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#define LLVM_LIB_CODEGEN_ASMPRINTER_DWARFSTRINGPOOL_H
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#include "llvm/ADT/StringMap.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/CodeGen/DwarfStringPoolEntry.h"
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#include "llvm/Support/Allocator.h"
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namespace llvm {
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class AsmPrinter;
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class MCSection;
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class MCSymbol;
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// Collection of strings for this unit and assorted symbols.
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// A String->Symbol mapping of strings used by indirect
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// references.
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class DwarfStringPool {
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using EntryTy = DwarfStringPoolEntry;
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StringMap<EntryTy, BumpPtrAllocator &> Pool;
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StringRef Prefix;
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uint64_t NumBytes = 0;
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unsigned NumIndexedStrings = 0;
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bool ShouldCreateSymbols;
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StringMapEntry<EntryTy> &getEntryImpl(AsmPrinter &Asm, StringRef Str);
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public:
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using EntryRef = DwarfStringPoolEntryRef;
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DwarfStringPool(BumpPtrAllocator &A, AsmPrinter &Asm, StringRef Prefix);
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void emitStringOffsetsTableHeader(AsmPrinter &Asm, MCSection *OffsetSection,
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MCSymbol *StartSym);
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void emit(AsmPrinter &Asm, MCSection *StrSection,
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MCSection *OffsetSection = nullptr,
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bool UseRelativeOffsets = false);
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bool empty() const { return Pool.empty(); }
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unsigned size() const { return Pool.size(); }
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unsigned getNumIndexedStrings() const { return NumIndexedStrings; }
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/// Get a reference to an entry in the string pool.
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EntryRef getEntry(AsmPrinter &Asm, StringRef Str);
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/// Same as getEntry, except that you can use EntryRef::getIndex to obtain a
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/// unique ID of this entry (e.g., for use in indexed forms like
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/// DW_FORM_strx).
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EntryRef getIndexedEntry(AsmPrinter &Asm, StringRef Str);
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};
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} // end namespace llvm
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#endif // LLVM_LIB_CODEGEN_ASMPRINTER_DWARFSTRINGPOOL_H
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