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076ea9fc78
Summary: This patch relands D71271. The problem with D71271 is that it has cyclic dependency: CodeGen->AsmPrinter->DebugInfoDWARF->CodeGen. To avoid cyclic dependency this patch puts implementation for DWARFOptimizer into separate library: lib/DWARFLinker. Thus the difference between this patch and D71271 is in that DWARFOptimizer renamed into DWARFLinker and it`s files are put into lib/DWARFLinker. Reviewers: JDevlieghere, friss, dblaikie, aprantl Reviewed By: JDevlieghere Subscribers: thegameg, merge_guards_bot, probinson, mgorny, hiraditya, llvm-commits Tags: #llvm, #debug-info Differential Revision: https://reviews.llvm.org/D71839
55 lines
1.7 KiB
C++
55 lines
1.7 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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namespace llvm {
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DwarfStringPoolEntryRef NonRelocatableStringpool::getEntry(StringRef S) {
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if (S.empty() && !Strings.empty())
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return EmptyString;
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if (Translator)
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S = Translator(S);
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auto I = Strings.insert({S, DwarfStringPoolEntry()});
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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, true);
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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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if (Translator)
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S = Translator(S);
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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, true);
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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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