48 lines
1.3 KiB
C++
48 lines
1.3 KiB
C++
//===- IndexedValuesMap.h ---------------------------------------*- 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_DWARFLINKER_INDEXEDVALUESMAP_H
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#define LLVM_DWARFLINKER_INDEXEDVALUESMAP_H
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#include "llvm/ADT/DenseMap.h"
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#include "llvm/ADT/SmallVector.h"
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#include <cstdint>
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namespace llvm {
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namespace dwarf_linker {
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/// This class stores values sequentually and assigns index to the each value.
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template <typename T> class IndexedValuesMap {
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public:
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uint64_t getValueIndex(T Value) {
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auto [It, Inserted] = ValueToIndexMap.try_emplace(Value, Values.size());
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if (Inserted)
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Values.push_back(Value);
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return It->second;
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}
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const SmallVector<T> &getValues() const { return Values; }
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void clear() {
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ValueToIndexMap.clear();
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Values.clear();
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}
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bool empty() { return Values.empty(); }
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protected:
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using ValueToIndexMapTy = DenseMap<T, uint64_t>;
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ValueToIndexMapTy ValueToIndexMap;
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SmallVector<T> Values;
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};
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} // end of namespace dwarf_linker
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} // end of namespace llvm
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#endif // LLVM_DWARFLINKER_INDEXEDVALUESMAP_H
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