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