5f2a7fa67e
This patch is extracted from D96035, it adds support for the existing DWARFLinker functionality. What is not supported yet: 1. Types deduplication(--odr mode). 2. Modules deduplication. 3. Generation of index tables. Reland2: temporarily disabled call to "--linker llvm" for tls-variable.test and location-expression.test as it does not work properly on bigendian architecture. Differential Revision: https://reviews.llvm.org/D153268
50 lines
1.4 KiB
C++
50 lines
1.4 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_LIB_DWARFLINKERPARALLEL_INDEXEDVALUESMAP_H
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#define LLVM_LIB_DWARFLINKERPARALLEL_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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#include <utility>
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namespace llvm {
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namespace dwarflinker_parallel {
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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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typename ValueToIndexMapTy::iterator It = ValueToIndexMap.find(Value);
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if (It == ValueToIndexMap.end()) {
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It = ValueToIndexMap.insert(std::make_pair(Value, Values.size())).first;
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Values.push_back(Value);
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}
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return It->second;
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}
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const SmallVector<T> &getValues() { 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 dwarflinker_parallel
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} // end namespace llvm
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#endif // LLVM_LIB_DWARFLINKERPARALLEL_INDEXEDVALUESMAP_H
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