Move Memory.{h,cpp} to lld/Support so that we can use them from COFF.

git-svn-id: https://llvm.org/svn/llvm-project/lld/trunk@289084 91177308-0d34-0410-b5e6-96231b3b80d8

3 files changed, 37 insertions, 0 deletions

diff --git a/lib/CMakeLists.txt b/lib/CMakeLists.txt
index 699f5e93f..acd532230 100644
--- a/lib/CMakeLists.txt
+++ b/lib/CMakeLists.txt
@@ -2,3 +2,4 @@ add_subdirectory(Config)
 add_subdirectory(Core)
 add_subdirectory(Driver)
 add_subdirectory(ReaderWriter)
+add_subdirectory(Support)
diff --git a/lib/Support/CMakeLists.txt b/lib/Support/CMakeLists.txt
new file mode 100644
index 000000000..18dccdbc5
--- /dev/null
+++ b/lib/Support/CMakeLists.txt
@@ -0,0 +1,9 @@
+add_lld_library(lldSupport
+  Memory.cpp
+
+  ADDITIONAL_HEADER_DIRS
+  ${LLD_INCLUDE_DIR}/lld/Support
+
+  LINK_LIBS
+  LLVMSupport
+)
diff --git a/lib/Support/Memory.cpp b/lib/Support/Memory.cpp
new file mode 100644
index 000000000..9bdcdcc8f
--- /dev/null
+++ b/lib/Support/Memory.cpp
@@ -0,0 +1,27 @@
+//===- Memory.cpp -----------------------------------------------*- C++ -*-===//
+//
+//                             The LLVM Linker
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "lld/Support/Memory.h"
+
+using namespace llvm;
+
+namespace lld {
+BumpPtrAllocator BAlloc;
+StringSaver Saver{BAlloc};
+
+SpecificAllocBase::SpecificAllocBase() { Instances.push_back(this); }
+
+std::vector<SpecificAllocBase *> SpecificAllocBase::Instances;
+
+void freeArena() {
+  for (SpecificAllocBase *Alloc : SpecificAllocBase::Instances)
+    Alloc->reset();
+  BAlloc.Reset();
+}
+}