cc78177e8f
try_emplace can default-construct values, so we do not need to do so
on our own. Plus, try_emplace(Key) is much simpler/shorter than
insert({Key, LongValueType()}).
48 lines
1.5 KiB
C++
48 lines
1.5 KiB
C++
//===-- NonRelocatableStringpool.cpp --------------------------------------===//
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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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#include "llvm/CodeGen/NonRelocatableStringpool.h"
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#include "llvm/ADT/STLExtras.h"
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namespace llvm {
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DwarfStringPoolEntryRef NonRelocatableStringpool::getEntry(StringRef S) {
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auto I = Strings.try_emplace(S);
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auto &Entry = I.first->second;
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if (I.second || !Entry.isIndexed()) {
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Entry.Index = NumEntries++;
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Entry.Offset = CurrentEndOffset;
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Entry.Symbol = nullptr;
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CurrentEndOffset += S.size() + 1;
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}
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return DwarfStringPoolEntryRef(*I.first);
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}
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StringRef NonRelocatableStringpool::internString(StringRef S) {
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DwarfStringPoolEntry Entry{nullptr, 0, DwarfStringPoolEntry::NotIndexed};
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auto InsertResult = Strings.insert({S, Entry});
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return InsertResult.first->getKey();
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}
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std::vector<DwarfStringPoolEntryRef>
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NonRelocatableStringpool::getEntriesForEmission() const {
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std::vector<DwarfStringPoolEntryRef> Result;
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Result.reserve(Strings.size());
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for (const auto &E : Strings)
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if (E.getValue().isIndexed())
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Result.emplace_back(E);
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llvm::sort(Result, [](const DwarfStringPoolEntryRef A,
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const DwarfStringPoolEntryRef B) {
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return A.getIndex() < B.getIndex();
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});
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return Result;
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}
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} // namespace llvm
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