72 lines
2.2 KiB
C
72 lines
2.2 KiB
C
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//===- llvm/CodeGen/DwarfStringPoolEntry.h - String pool entry --*- 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_CODEGEN_DWARFSTRINGPOOLENTRY_H
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#define LLVM_CODEGEN_DWARFSTRINGPOOLENTRY_H
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#include "llvm/ADT/PointerIntPair.h"
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#include "llvm/ADT/StringMap.h"
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namespace llvm {
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class MCSymbol;
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/// Data for a string pool entry.
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struct DwarfStringPoolEntry {
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static constexpr unsigned NotIndexed = -1;
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MCSymbol *Symbol;
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uint64_t Offset;
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unsigned Index;
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bool isIndexed() const { return Index != NotIndexed; }
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};
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/// String pool entry reference.
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class DwarfStringPoolEntryRef {
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PointerIntPair<const StringMapEntry<DwarfStringPoolEntry> *, 1, bool>
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MapEntryAndIndexed;
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const StringMapEntry<DwarfStringPoolEntry> *getMapEntry() const {
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return MapEntryAndIndexed.getPointer();
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}
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public:
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DwarfStringPoolEntryRef() = default;
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DwarfStringPoolEntryRef(const StringMapEntry<DwarfStringPoolEntry> &Entry,
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bool Indexed)
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: MapEntryAndIndexed(&Entry, Indexed) {}
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explicit operator bool() const { return getMapEntry(); }
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MCSymbol *getSymbol() const {
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assert(getMapEntry()->second.Symbol && "No symbol available!");
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return getMapEntry()->second.Symbol;
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}
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uint64_t getOffset() const { return getMapEntry()->second.Offset; }
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bool isIndexed() const { return MapEntryAndIndexed.getInt(); }
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unsigned getIndex() const {
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assert(isIndexed());
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assert(getMapEntry()->getValue().isIndexed());
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return getMapEntry()->second.Index;
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}
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StringRef getString() const { return getMapEntry()->first(); }
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/// Return the entire string pool entry for convenience.
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DwarfStringPoolEntry getEntry() const { return getMapEntry()->getValue(); }
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bool operator==(const DwarfStringPoolEntryRef &X) const {
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return getMapEntry() == X.getMapEntry();
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}
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bool operator!=(const DwarfStringPoolEntryRef &X) const {
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return getMapEntry() != X.getMapEntry();
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}
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};
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} // end namespace llvm
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#endif
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