[Dsymutil][NFC] Move NonRelocatableStringpool into common CodeGen folder.
That refactoring moves NonRelocatableStringpool into common CodeGen folder.
So that NonRelocatableStringpool could be used not only inside dsymutil.
Differential Revision: https://reviews.llvm.org/D71068
diff --git a/llvm/lib/CodeGen/NonRelocatableStringpool.cpp b/llvm/lib/CodeGen/NonRelocatableStringpool.cpp
new file mode 100644
index 0000000..d28399f
--- /dev/null
+++ b/llvm/lib/CodeGen/NonRelocatableStringpool.cpp
@@ -0,0 +1,54 @@
+//===-- llvm/CodeGen/NonRelocatableStringpool.cpp - A simple stringpool --===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/CodeGen/NonRelocatableStringpool.h"
+
+namespace llvm {
+
+DwarfStringPoolEntryRef NonRelocatableStringpool::getEntry(StringRef S) {
+ if (S.empty() && !Strings.empty())
+ return EmptyString;
+
+ if (Translator)
+ S = Translator(S);
+ auto I = Strings.insert({S, DwarfStringPoolEntry()});
+ auto &Entry = I.first->second;
+ if (I.second || !Entry.isIndexed()) {
+ Entry.Index = NumEntries++;
+ Entry.Offset = CurrentEndOffset;
+ Entry.Symbol = nullptr;
+ CurrentEndOffset += S.size() + 1;
+ }
+ return DwarfStringPoolEntryRef(*I.first, true);
+}
+
+StringRef NonRelocatableStringpool::internString(StringRef S) {
+ DwarfStringPoolEntry Entry{nullptr, 0, DwarfStringPoolEntry::NotIndexed};
+
+ if (Translator)
+ S = Translator(S);
+
+ auto InsertResult = Strings.insert({S, Entry});
+ return InsertResult.first->getKey();
+}
+
+std::vector<DwarfStringPoolEntryRef>
+NonRelocatableStringpool::getEntriesForEmission() const {
+ std::vector<DwarfStringPoolEntryRef> Result;
+ Result.reserve(Strings.size());
+ for (const auto &E : Strings)
+ if (E.getValue().isIndexed())
+ Result.emplace_back(E, true);
+ llvm::sort(Result, [](const DwarfStringPoolEntryRef A,
+ const DwarfStringPoolEntryRef B) {
+ return A.getIndex() < B.getIndex();
+ });
+ return Result;
+}
+
+} // namespace llvm