| 1 | //===-- NonRelocatableStringpool.cpp --------------------------------------===// |
|---|---|
| 2 | // |
| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| 4 | // See https://llvm.org/LICENSE.txt for license information. |
| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| 6 | // |
| 7 | //===----------------------------------------------------------------------===// |
| 8 | |
| 9 | #include "llvm/CodeGen/NonRelocatableStringpool.h" |
| 10 | #include "llvm/ADT/STLExtras.h" |
| 11 | |
| 12 | namespace llvm { |
| 13 | |
| 14 | DwarfStringPoolEntryRef NonRelocatableStringpool::getEntry(StringRef S) { |
| 15 | auto I = Strings.insert(KV: {S, DwarfStringPoolEntry()}); |
| 16 | auto &Entry = I.first->second; |
| 17 | if (I.second || !Entry.isIndexed()) { |
| 18 | Entry.Index = NumEntries++; |
| 19 | Entry.Offset = CurrentEndOffset; |
| 20 | Entry.Symbol = nullptr; |
| 21 | CurrentEndOffset += S.size() + 1; |
| 22 | } |
| 23 | return DwarfStringPoolEntryRef(*I.first); |
| 24 | } |
| 25 | |
| 26 | StringRef NonRelocatableStringpool::internString(StringRef S) { |
| 27 | DwarfStringPoolEntry Entry{.Symbol: nullptr, .Offset: 0, .Index: DwarfStringPoolEntry::NotIndexed}; |
| 28 | |
| 29 | auto InsertResult = Strings.insert(KV: {S, Entry}); |
| 30 | return InsertResult.first->getKey(); |
| 31 | } |
| 32 | |
| 33 | std::vector<DwarfStringPoolEntryRef> |
| 34 | NonRelocatableStringpool::getEntriesForEmission() const { |
| 35 | std::vector<DwarfStringPoolEntryRef> Result; |
| 36 | Result.reserve(n: Strings.size()); |
| 37 | for (const auto &E : Strings) |
| 38 | if (E.getValue().isIndexed()) |
| 39 | Result.emplace_back(args: E); |
| 40 | llvm::sort(C&: Result, Comp: [](const DwarfStringPoolEntryRef A, |
| 41 | const DwarfStringPoolEntryRef B) { |
| 42 | return A.getIndex() < B.getIndex(); |
| 43 | }); |
| 44 | return Result; |
| 45 | } |
| 46 | |
| 47 | } // namespace llvm |
| 48 |