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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
72 lines
2.2 KiB
C++
72 lines
2.2 KiB
C++
//===- 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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unsigned 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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unsigned 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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