[Dsymutil][Debuginfo][NFC] Refactor dsymutil to separate DWARF optimizing part 2.

That patch is extracted from the D70709. It moves CompileUnit, DeclContext
into llvm/DebugInfo/DWARF. It also adds new file DWARFOptimizer with
AddressesMap class. AddressesMap generalizes functionality
from RelocationManager.

Differential Revision: https://reviews.llvm.org/D71271

1 files changed, 15 insertions, 0 deletions

diff --git a/llvm/lib/DebugInfo/DWARF/DWARFOptimizer.cpp b/llvm/lib/DebugInfo/DWARF/DWARFOptimizer.cpp
new file mode 100644
index 00000000000..535d2a04707
--- /dev/null
+++ b/llvm/lib/DebugInfo/DWARF/DWARFOptimizer.cpp
@@ -0,0 +1,15 @@
+//=== llvm/DebugInfo/DWARF/DWARFOptimizer.cpp -----------------------------===//
+//
+// 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/DebugInfo/DWARF/DWARFOptimizer.h"
+
+namespace llvm {
+
+AddressesMap::~AddressesMap() {}
+
+} // namespace llvm