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to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
67 lines
2.1 KiB
C++
67 lines
2.1 KiB
C++
//===- 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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unsigned 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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